/* roulang page: index */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }
        a:hover {
            color: var(--color-accent-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }
        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }
        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }
        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }
        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }
        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }
        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: var(--color-primary);
                padding: 12px 16px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                margin-top: 4px;
            }
            .site-header .nav-link {
                padding: 0.6rem 1rem !important;
                border-radius: var(--radius-sm);
            }
            .site-header .nav-link::after {
                display: none;
            }
            .site-header .nav-link:hover {
                background: rgba(255, 255, 255, 0.06);
            }
        }

        /* ========== HERO - 全宽浅色顶栏矮横幅 ========== */
        .hero-section {
            padding-top: 100px;
            padding-bottom: 60px;
            background: var(--color-bg);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--color-border);
        }
        .hero-section .hero-bg-pattern {
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: linear-gradient(135deg, rgba(197, 164, 107, 0.06) 0%, rgba(197, 164, 107, 0.02) 100%);
            border-radius: 0 0 0 120px;
            pointer-events: none;
        }
        .hero-section .hero-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .hero-section .hero-text {
            flex: 1;
            min-width: 280px;
        }
        .hero-section .hero-tag {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            letter-spacing: 0.05em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .hero-section h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-primary);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .hero-section .hero-desc {
            font-size: 1.05rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 520px;
            margin-bottom: 24px;
        }
        .hero-section .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-section .hero-visual {
            flex: 0 0 380px;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #e8e4dd;
            aspect-ratio: 16 / 10;
            position: relative;
        }
        .hero-section .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding-top: 80px;
                padding-bottom: 40px;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            .hero-section .hero-visual {
                flex: 0 0 100%;
                aspect-ratio: 16 / 9;
            }
            .hero-section .hero-bg-pattern {
                width: 70%;
                border-radius: 0 0 0 60px;
            }
        }

        /* ========== BUTTONS ========== */
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: none;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            transform: scale(1.02);
            box-shadow: 0 6px 22px rgba(184, 138, 75, 0.35);
            color: #ffffff !important;
        }
        .btn-accent:active {
            transform: scale(0.98);
        }
        .btn-outline-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-accent) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--color-accent);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #ffffff !important;
            transform: scale(1.02);
            box-shadow: 0 4px 16px rgba(197, 164, 107, 0.3);
        }
        .btn-outline-accent:active {
            transform: scale(0.98);
        }
        .btn-sm-accent {
            font-size: 0.85rem;
            padding: 7px 18px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            color: #ffffff !important;
            font-weight: 600;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            border: none;
        }
        .btn-sm-accent:hover {
            background: var(--color-accent-dark);
            transform: scale(1.03);
            color: #ffffff !important;
        }
        .btn-link-accent {
            color: var(--color-accent) !important;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
            transition: all var(--transition-base);
        }
        .btn-link-accent:hover {
            color: var(--color-accent-dark) !important;
            gap: 9px;
        }
        .btn-link-accent i {
            transition: transform var(--transition-base);
        }
        .btn-link-accent:hover i {
            transform: translateX(3px);
        }

        /* ========== SECTION TITLES ========== */
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent-dark);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.3;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 600px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-section {
            padding: var(--section-py) 0;
            background: var(--color-primary);
            position: relative;
            overflow: hidden;
        }
        .metrics-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(197, 164, 107, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }
        .metric-card {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(197, 164, 107, 0.3);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: 0.02em;
            display: block;
        }
        .metric-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .metric-number {
                font-size: 1.8rem;
            }
            .metrics-section {
                padding: var(--section-py-mobile) 0;
            }
        }
        @media (max-width: 480px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-number {
                font-size: 1.5rem;
            }
        }

        /* ========== SERVICE MATRIX ========== */
        .services-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }
        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }
        .service-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .service-card.service-card-large {
            grid-column: span 2;
            flex-direction: row;
            align-items: center;
            gap: 28px;
            padding: 32px 28px;
        }
        .service-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .service-card .service-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent-dark);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0;
            letter-spacing: 0.01em;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.6;
        }
        .service-card .service-card-visual {
            flex-shrink: 0;
            width: 140px;
            height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: #e8e4dd;
        }
        .service-card .service-card-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .service-card.service-card-large {
                grid-column: span 1;
                flex-direction: column;
                align-items: flex-start;
            }
            .service-card .service-card-visual {
                width: 100%;
                height: 160px;
            }
            .services-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== DEEP CONTENT A ========== */
        .deep-content-a {
            padding: var(--section-py) 0;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .deep-content-a .content-row {
            display: flex;
            gap: 50px;
            align-items: flex-start;
            flex-wrap: wrap;
        }
        .deep-content-a .content-text {
            flex: 1;
            min-width: 300px;
        }
        .deep-content-a .content-text h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }
        .deep-content-a .content-text p {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .deep-content-a .content-text blockquote {
            border-left: 3px solid var(--color-accent);
            padding-left: 20px;
            margin: 20px 0;
            color: var(--color-text);
            font-style: italic;
            font-size: 1.05rem;
        }
        .deep-content-a .content-visual {
            flex: 0 0 400px;
            min-width: 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #e8e4dd;
            aspect-ratio: 4 / 3;
        }
        .deep-content-a .content-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .deep-content-a .content-row {
                flex-direction: column;
                gap: 30px;
            }
            .deep-content-a .content-visual {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16 / 10;
            }
            .deep-content-a {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== COMPARISON ========== */
        .comparison-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }
        .comparison-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: 900px;
            margin: 0 auto;
        }
        .comparison-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .comparison-card.card-highlight {
            border-color: var(--color-accent);
            border-width: 2px;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .comparison-card.card-highlight::before {
            content: '推荐方案';
            position: absolute;
            top: -14px;
            right: 20px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }
        .comparison-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-primary);
        }
        .comparison-card .comp-value {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .comparison-card.card-highlight .comp-value {
            color: var(--color-accent-dark);
        }
        .comparison-card.card-muted .comp-value {
            color: #9a9a9a;
        }
        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .comparison-card ul li {
            padding: 7px 0;
            font-size: 0.9rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px solid var(--color-border);
        }
        .comparison-card ul li:last-child {
            border-bottom: none;
        }
        .comparison-card ul li i {
            font-size: 0.8rem;
        }
        .comparison-card.card-highlight ul li i {
            color: var(--color-accent);
        }
        .comparison-card.card-muted ul li i {
            color: #c0c0c0;
        }
        @media (max-width: 768px) {
            .comparison-cards {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .comparison-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== COUPON GRID ========== */
        .coupon-section {
            padding: var(--section-py) 0;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .coupon-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .coupon-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .coupon-card .coupon-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            letter-spacing: 0.03em;
        }
        .coupon-card .coupon-icon {
            font-size: 2rem;
            color: var(--color-accent-dark);
            margin-bottom: 10px;
        }
        .coupon-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .coupon-card p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-bottom: 14px;
            line-height: 1.5;
        }
        .coupon-card .coupon-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-accent-dark);
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .coupon-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .coupon-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== RULES SECTION ========== */
        .rules-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }
        .rules-steps {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            counter-reset: step;
        }
        .rule-step {
            flex: 1;
            min-width: 220px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            counter-increment: step;
        }
        .rule-step:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .rule-step::before {
            content: counter(step);
            position: absolute;
            top: -16px;
            left: 20px;
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .rule-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-top: 8px;
            margin-bottom: 6px;
        }
        .rule-step p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .rules-steps {
                flex-direction: column;
            }
            .rules-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== PRODUCT SHOWCASE ========== */
        .showcase-section {
            padding: var(--section-py) 0;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .showcase-wrapper {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .showcase-text {
            flex: 1;
            min-width: 260px;
        }
        .showcase-text h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .showcase-text p {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .showcase-frame {
            flex: 0 0 480px;
            min-width: 300px;
            background: #e8e4dd;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16 / 10;
            position: relative;
        }
        .showcase-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .showcase-dots {
            display: flex;
            gap: 8px;
            margin-top: 14px;
            justify-content: center;
        }
        .showcase-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-border);
            cursor: pointer;
            transition: all var(--transition-base);
        }
        .showcase-dot.active {
            background: var(--color-accent);
            width: 28px;
            border-radius: 10px;
        }
        @media (max-width: 768px) {
            .showcase-wrapper {
                flex-direction: column;
            }
            .showcase-frame {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16 / 10;
            }
            .showcase-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .testimonial-card .stars {
            color: var(--color-accent);
            font-size: 0.9rem;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }
        .testimonial-card .quote {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }
        .testimonial-card .author {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-primary);
        }
        .testimonial-card .author-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 768px) {
            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .testimonials-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== FOCUS TOPICS ========== */
        .topics-section {
            padding: var(--section-py) 0;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .topic-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card .topic-tag {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--color-accent-dark);
        }
        .topic-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0;
        }
        .topic-card p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .topics-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .topics-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== NEWS SECTION ========== */
        .news-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
            flex-wrap: wrap;
        }
        .news-item:hover {
            background: rgba(197, 164, 107, 0.03);
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }
        .news-date {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-accent-dark);
            font-weight: 600;
            letter-spacing: 0.03em;
            min-width: 90px;
        }
        .news-title {
            flex: 1;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-primary);
            min-width: 180px;
            cursor: pointer;
            transition: color var(--transition-base);
        }
        .news-title:hover {
            color: var(--color-accent-dark);
        }
        .news-summary {
            flex: 0 0 200px;
            font-size: 0.85rem;
            color: var(--color-text-light);
            min-width: 140px;
        }
        .news-item .btn-link-accent {
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 14px 0;
            }
            .news-summary {
                flex: 0 0 auto;
            }
            .news-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== DEEP CONTENT B ========== */
        .deep-content-b {
            padding: var(--section-py) 0;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .deep-content-b .content-row {
            display: flex;
            gap: 50px;
            align-items: flex-start;
            flex-wrap: wrap;
        }
        .deep-content-b .content-visual {
            flex: 0 0 380px;
            min-width: 260px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #e8e4dd;
            aspect-ratio: 4 / 3;
        }
        .deep-content-b .content-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .deep-content-b .content-text {
            flex: 1;
            min-width: 300px;
        }
        .deep-content-b .content-text h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }
        .deep-content-b .content-text p {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .deep-content-b .content-text ul {
            list-style: none;
            padding: 0;
            margin: 16px 0;
        }
        .deep-content-b .content-text ul li {
            padding: 8px 0;
            font-size: 0.95rem;
            color: var(--color-text-light);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }
        .deep-content-b .content-text ul li i {
            color: var(--color-accent);
            margin-top: 3px;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .deep-content-b .content-row {
                flex-direction: column;
                gap: 30px;
            }
            .deep-content-b .content-visual {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16 / 10;
                order: -1;
            }
            .deep-content-b {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 12px;
            transition: color var(--transition-base);
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-accent);
            transition: transform var(--transition-smooth);
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--color-accent-dark);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.75;
            margin: 0;
        }
        @media (max-width: 768px) {
            .faq-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            padding: var(--section-py) 0;
            background: linear-gradient(135deg, rgba(197, 164, 107, 0.08) 0%, rgba(197, 164, 107, 0.03) 100%);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .cta-form-inner {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-form-inner h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .cta-form-inner .cta-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .cta-form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form-row input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            background: #ffffff;
            color: var(--color-primary);
            transition: all var(--transition-base);
        }
        .cta-form-row input::placeholder {
            color: #b0b0b0;
        }
        .cta-form-row .btn-accent {
            flex-shrink: 0;
            padding: 12px 32px;
            font-size: 1rem;
        }
        @media (max-width: 768px) {
            .cta-form-row {
                flex-direction: column;
            }
            .cta-form-row input {
                min-width: auto;
            }
            .cta-form-section {
                padding: var(--section-py-mobile) 0;
            }
        }

        /* ========== GO-USE CTA ========== */
        .gouse-section {
            padding: 50px 0;
            background: var(--color-primary);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .gouse-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 50%;
            height: 160%;
            background: radial-gradient(ellipse, rgba(197, 164, 107, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .gouse-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .gouse-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .gouse-section .btn-accent {
            position: relative;
            z-index: 1;
            font-size: 1.05rem;
            padding: 14px 36px;
        }
        @media (max-width: 768px) {
            .gouse-section h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            padding: 5px 0;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-base);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== MISC ========== */
        .section-spacer {
            height: 0;
        }
        .text-accent {
            color: var(--color-accent-dark) !important;
        }
        .fw-800 {
            font-weight: 800;
        }
        .divider-accent {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 12px 0;
            border: none;
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }
        a:hover {
            color: var(--color-accent-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }
        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }
        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }
        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }
        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }
        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }
        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }
        .site-header .navbar-collapse {
            background: var(--color-primary);
            padding: 12px 16px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            margin-top: 4px;
        }

        /* Offcanvas mobile nav */
        .offcanvas {
            background: var(--color-primary);
            color: #ffffff;
        }
        .offcanvas .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .offcanvas .offcanvas-title {
            color: #ffffff;
            font-weight: 700;
        }
        .offcanvas .btn-close {
            filter: invert(1);
        }
        .offcanvas .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1rem;
            padding: 0.75rem 1rem !important;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .offcanvas .nav-link.active {
            color: var(--color-accent) !important;
            background: rgba(197, 164, 107, 0.08);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrapper {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-nav li a {
            color: var(--color-accent);
            font-weight: 500;
        }
        .breadcrumb-nav li a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        .breadcrumb-nav li.separator {
            color: var(--color-text-muted);
            font-size: 0.75rem;
        }
        .breadcrumb-nav li.current {
            color: var(--color-text-light);
            font-weight: 500;
        }
        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
        }
        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        /* ========== HERO FLASH SALE ========== */
        .hero-flash {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-flash::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.88) 0%, rgba(26, 26, 26, 0.75) 40%, rgba(26, 26, 26, 0.65) 100%);
            z-index: 1;
        }
        .hero-flash-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .flash-badge {
            display: inline-block;
            background: #e74c3c;
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            animation: flashPulse 1.6s ease-in-out infinite;
            margin-bottom: 16px;
        }
        @keyframes flashPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.5);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(231, 76, 60, 0);
            }
        }
        .hero-flash h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.03em;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .hero-flash h1 .accent {
            color: var(--color-accent);
        }
        .hero-flash .flash-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            max-width: 560px;
            line-height: 1.7;
        }
        .countdown-timer {
            display: flex;
            gap: 14px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            text-align: center;
            min-width: 70px;
            backdrop-filter: blur(4px);
        }
        .countdown-item .count-num {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1;
            display: block;
        }
        .countdown-item .count-label {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
            display: block;
        }
        .flash-card-highlight {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-lg);
            border: 2px solid var(--color-accent);
            position: relative;
            overflow: hidden;
            max-width: 400px;
        }
        .flash-card-highlight .flash-card-tag {
            position: absolute;
            top: 0;
            right: 0;
            background: #e74c3c;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 6px 18px;
            border-radius: 0 0 0 var(--radius-md);
            letter-spacing: 0.03em;
        }
        .flash-card-highlight h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .flash-card-highlight .flash-price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent-dark);
            margin-bottom: 4px;
        }
        .flash-card-highlight .flash-price-original {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            text-decoration: line-through;
            margin-left: 8px;
        }
        .flash-card-highlight .flash-features {
            list-style: none;
            padding: 0;
            margin: 16px 0;
            font-size: 0.9rem;
            color: var(--color-text-light);
        }
        .flash-card-highlight .flash-features li {
            padding: 4px 0;
            padding-left: 20px;
            position: relative;
        }
        .flash-card-highlight .flash-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
        }
        .btn-flash-cta {
            display: inline-block;
            background: #e74c3c;
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            text-align: center;
            width: 100%;
        }
        .btn-flash-cta:hover {
            background: #c0392b;
            color: #ffffff;
            transform: scale(1.03);
            box-shadow: 0 6px 24px rgba(231, 76, 60, 0.4);
        }

        /* ========== BUTTONS ========== */
        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            letter-spacing: 0.01em;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            color: #ffffff;
            transform: scale(1.02);
            box-shadow: 0 4px 18px rgba(197, 164, 107, 0.35);
        }
        .btn-outline-accent {
            display: inline-block;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: 2px solid var(--color-accent);
            transition: all var(--transition-base);
            cursor: pointer;
            letter-spacing: 0.01em;
        }
        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #ffffff;
            transform: scale(1.02);
        }
        .btn-read-more {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
        }
        .btn-read-more:hover {
            color: var(--color-accent-dark);
            gap: 10px;
        }
        .btn-read-more i {
            font-size: 0.75rem;
            transition: transform var(--transition-base);
        }
        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-py) 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 40px;
        }
        .section-bg-white {
            background: #ffffff;
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
        }
        .card-custom:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .card-custom h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .card-custom p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scenario-card .scenario-body {
            padding: 20px 18px;
        }
        .scenario-card .scenario-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .scenario-card .scenario-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== PROCESS STEPS ========== */
        .process-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }
        .process-step:last-child {
            border-bottom: none;
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            min-width: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .process-step .step-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .process-step .step-content p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 32px;
        }
        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            border: 1px solid var(--color-border);
            background: #ffffff;
            color: var(--color-text-light);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .filter-tag.active,
        .filter-tag:hover {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }
        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-light);
        }
        .filter-sort select {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            font-size: 0.85rem;
            color: var(--color-text);
            background: #ffffff;
            cursor: pointer;
            font-family: var(--font-stack);
        }
        .filter-sort select:focus {
            border-color: var(--color-accent);
            outline: none;
        }

        /* ========== ARTICLE LIST ITEM ========== */
        .article-list-item {
            display: flex;
            gap: 24px;
            padding: 24px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
            align-items: center;
        }
        .article-list-item:hover {
            background: rgba(197, 164, 107, 0.02);
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }
        .article-list-item .article-thumb {
            width: 240px;
            min-width: 240px;
            height: 160px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
        }
        .article-list-item .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .article-list-item:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-list-item .article-info {
            flex: 1;
            min-width: 0;
        }
        .article-list-item .article-date {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .article-list-item .article-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: block;
        }
        .article-list-item .article-title:hover {
            color: var(--color-accent-dark);
        }
        .article-list-item .article-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ========== PAGINATION ========== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            gap: 6px;
            padding: 32px 0 16px;
            flex-wrap: wrap;
        }
        .pagination-wrapper .page-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid var(--color-border);
            background: #ffffff;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-base);
        }
        .pagination-wrapper .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .pagination-wrapper .page-btn.active {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }
        .pagination-wrapper .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: default;
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-list {
            border-top: 1px solid var(--color-border);
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 12px;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }
        .faq-item.active .faq-icon {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.08);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 500px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-accent {
            font-size: 1rem;
            padding: 14px 36px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 0;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .site-footer h4 {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-base);
            font-size: 0.9rem;
        }
        .site-footer ul li a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-base);
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-flash h1 {
                font-size: 2.2rem;
            }
            .article-list-item .article-thumb {
                width: 180px;
                min-width: 180px;
                height: 130px;
            }
            .section {
                padding: var(--section-py-mobile) 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .hero-flash {
                min-height: auto;
                padding: 60px 0 40px;
            }
            .hero-flash h1 {
                font-size: 1.7rem;
            }
            .hero-flash .flash-subtitle {
                font-size: 0.95rem;
            }
            .countdown-timer {
                gap: 8px;
            }
            .countdown-item {
                padding: 10px 12px;
                min-width: 55px;
            }
            .countdown-item .count-num {
                font-size: 1.4rem;
            }
            .flash-card-highlight {
                max-width: 100%;
                margin-top: 20px;
            }
            .article-list-item {
                flex-direction: column;
                gap: 14px;
            }
            .article-list-item .article-thumb {
                width: 100%;
                min-width: 100%;
                height: 180px;
            }
            .article-list-item:hover {
                padding-left: 0;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .filter-sort {
                margin-left: 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .breadcrumb-wrapper .container-custom {
                flex-direction: column;
                gap: 8px;
            }
            .breadcrumb-back {
                margin-left: 0;
            }
            .section {
                padding: var(--section-py-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .pagination-wrapper .page-btn {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-flash h1 {
                font-size: 1.4rem;
            }
            .countdown-item {
                padding: 8px 10px;
                min-width: 48px;
            }
            .countdown-item .count-num {
                font-size: 1.1rem;
            }
            .countdown-item .count-label {
                font-size: 0.65rem;
            }
            .flash-card-highlight {
                padding: 18px 14px;
            }
            .flash-card-highlight .flash-price {
                font-size: 1.6rem;
            }
            .container-custom {
                padding: 0 12px;
            }
            .filter-tag {
                padding: 5px 12px;
                font-size: 0.78rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .process-step {
                gap: 12px;
                padding: 14px 0;
            }
            .process-step .step-number {
                width: 38px;
                height: 38px;
                min-width: 38px;
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }
        a:hover {
            color: var(--color-accent-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }
        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }
        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }
        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }
        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }
        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }
        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }
        .site-header .navbar-collapse {
            background: var(--color-primary);
            padding: 12px 16px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            margin-top: 4px;
        }

        /* Offcanvas mobile nav */
        .offcanvas-mobile {
            background: var(--color-primary) !important;
            color: #ffffff !important;
        }
        .offcanvas-mobile .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .offcanvas-mobile .offcanvas-title {
            color: #ffffff;
            font-weight: 700;
        }
        .offcanvas-mobile .btn-close {
            filter: invert(1) brightness(2);
        }
        .offcanvas-mobile .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1rem;
            padding: 0.7rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base), color var(--transition-base);
        }
        .offcanvas-mobile .nav-link:hover,
        .offcanvas-mobile .nav-link.active {
            background: rgba(197, 164, 107, 0.15);
            color: #ffffff !important;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.9rem;
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-muted);
        }
        .breadcrumb-custom li a {
            color: var(--color-accent);
            font-weight: 500;
        }
        .breadcrumb-custom li a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        .breadcrumb-custom li.current {
            color: var(--color-text-light);
            font-weight: 500;
        }
        .breadcrumb-custom .separator {
            color: var(--color-border);
            font-size: 0.75rem;
        }
        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
        }
        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        /* ========== HERO ========== */
        .hero-section {
            padding: 60px 0 70px;
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1.6fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .hero-value-points {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .hero-value-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            background: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }
        .hero-value-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .hero-value-item .value-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .hero-value-item .value-text strong {
            display: block;
            font-size: 0.9rem;
            color: var(--color-text);
            margin-bottom: 2px;
        }
        .hero-value-item .value-text span {
            font-size: 0.8rem;
            color: var(--color-text-light);
            line-height: 1.4;
        }
        .hero-center-stage {
            text-align: center;
            position: relative;
        }
        .hero-center-stage .stage-badge {
            display: inline-block;
            background: rgba(197, 164, 107, 0.1);
            color: var(--color-accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .hero-center-stage h1 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.25;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .hero-center-stage .hero-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .hero-stage-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border);
            transition: transform var(--transition-smooth);
        }
        .hero-stage-image:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.13);
        }
        .hero-stage-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .hero-cta-group {
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: stretch;
        }
        .hero-cta-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }
        .hero-cta-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }
        .hero-cta-card .cta-card-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent-dark);
            line-height: 1;
            margin-bottom: 6px;
        }
        .hero-cta-card .cta-card-label {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-bottom: 10px;
        }
        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            text-align: center;
            border: none;
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            transform: scale(1.02);
            box-shadow: 0 4px 16px rgba(197, 164, 107, 0.35);
            color: #ffffff !important;
        }
        .btn-outline-accent {
            display: inline-block;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            border: 2px solid var(--color-accent);
            transition: all var(--transition-base);
            text-align: center;
            cursor: pointer;
        }
        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #ffffff !important;
            transform: scale(1.02);
        }

        /* ========== SECTION COMMON ========== */
        .section-py {
            padding: var(--section-py) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 700px;
            margin-bottom: 32px;
        }

        /* ========== SERVICE CARDS ========== */
        .service-grid-irregular {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }
        .service-grid-irregular .service-card-large {
            grid-row: span 2;
        }
        .service-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .service-card .service-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent-dark);
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }
        .service-card-large {
            padding: 36px 28px;
        }
        .service-card-large h3 {
            font-size: 1.3rem;
        }
        .service-card-large p {
            font-size: 0.95rem;
        }
        .service-card .card-image-preview {
            margin-top: 16px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--color-border);
        }
        .service-card .card-image-preview img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .scenario-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-card .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent-dark);
            font-size: 1.3rem;
            margin: 0 auto 14px;
        }
        .scenario-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .scenario-card p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.5;
            margin: 0;
        }

        /* ========== PROCESS TIMELINE ========== */
        .process-timeline {
            display: flex;
            gap: 0;
            align-items: flex-start;
            position: relative;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding: 10px 0;
        }
        .process-step {
            flex: 1;
            min-width: 160px;
            text-align: center;
            position: relative;
            padding: 0 12px;
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            position: relative;
            z-index: 2;
            transition: transform var(--transition-base);
        }
        .process-step:hover .step-number {
            transform: scale(1.1);
        }
        .process-step h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .process-step p {
            font-size: 0.8rem;
            color: var(--color-text-light);
            line-height: 1.4;
            margin: 0;
        }
        .process-connector {
            position: absolute;
            top: 24px;
            left: 50%;
            right: -50%;
            height: 2px;
            background: var(--color-border);
            z-index: 1;
        }
        .process-step:last-child .process-connector {
            display: none;
        }

        /* ========== COMPARISON ========== */
        .comparison-dual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .comparison-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .comparison-card.featured {
            border-color: var(--color-accent);
            border-width: 2px;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .comparison-card.featured::before {
            content: '28圈方案';
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--color-accent);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }
        .comparison-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .comparison-card .comp-metric {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 4px;
        }
        .comparison-card .comp-metric.accent {
            color: var(--color-accent-dark);
        }
        .comparison-card .comp-metric.muted {
            color: var(--color-text-muted);
        }
        .comparison-card .comp-label {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-bottom: 16px;
        }
        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .comparison-card ul li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comparison-card ul li:last-child {
            border-bottom: none;
        }
        .comparison-card ul li i.fa-check {
            color: var(--color-accent);
            font-size: 0.85rem;
        }
        .comparison-card ul li i.fa-minus {
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }

        /* ========== ARTICLE LIST ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 24px;
        }
        .filter-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-light);
            background: #ffffff;
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .filter-tag:hover,
        .filter-tag.active {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }
        .filter-sort {
            margin-left: auto;
            font-size: 0.85rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #ffffff;
            transition: all var(--transition-base);
        }
        .filter-sort:hover {
            border-color: var(--color-accent);
        }
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .article-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
            align-items: flex-start;
        }
        .article-item:hover {
            background: rgba(197, 164, 107, 0.03);
            padding-left: 8px;
            padding-right: 8px;
            margin: 0 -8px;
            border-radius: var(--radius-sm);
        }
        .article-thumb {
            width: 200px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base);
        }
        .article-thumb img {
            width: 100%;
            height: auto;
            display: block;
        }
        .article-item:hover .article-thumb {
            transform: scale(1.03);
        }
        .article-info {
            flex: 1;
        }
        .article-date {
            font-size: 0.8rem;
            color: var(--color-accent-dark);
            font-weight: 500;
            margin-bottom: 4px;
        }
        .article-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .article-info h3 a {
            color: var(--color-text);
            transition: color var(--transition-base);
        }
        .article-info h3 a:hover {
            color: var(--color-accent);
        }
        .article-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .article-read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-base);
        }
        .article-read-more:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }

        /* ========== PAGINATION ========== */
        .pagination-custom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 30px 0 10px;
            flex-wrap: wrap;
        }
        .pagination-custom .page-item {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            background: #ffffff;
            cursor: pointer;
            transition: all var(--transition-base);
        }
        .pagination-custom .page-item:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .pagination-custom .page-item.active {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
            font-weight: 700;
        }
        .pagination-custom .page-item.disabled {
            color: var(--color-text-muted);
            pointer-events: none;
            background: var(--color-bg);
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            transition: color var(--transition-base);
            gap: 12px;
            text-align: left;
            width: 100%;
        }
        .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            flex-shrink: 0;
            transition: all var(--transition-base);
            color: var(--color-text-light);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-accent);
            border-color: var(--color-accent);
            color: #ffffff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 0 20px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(197, 164, 107, 0.08) 0%, rgba(197, 164, 107, 0.03) 100%);
            padding: 60px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }
        .cta-section .cta-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .cta-form-inline {
            display: flex;
            gap: 12px;
            max-width: 560px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form-inline input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background: #ffffff;
            font-size: 0.95rem;
            color: var(--color-text);
            transition: all var(--transition-base);
        }
        .cta-form-inline input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12);
            outline: none;
        }
        .cta-form-inline .btn-accent {
            padding: 12px 28px;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .site-footer p {
            line-height: 1.7;
            margin: 0;
            font-size: 0.85rem;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }
        .site-footer ul li a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.8rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hero-cta-group {
                grid-column: span 2;
                flex-direction: row;
                gap: 12px;
            }
            .hero-cta-group .hero-cta-card {
                flex: 1;
            }
            .service-grid-irregular {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .service-grid-irregular .service-card-large {
                grid-row: span 1;
                grid-column: span 2;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-dual {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .hero-center-stage h1 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-cta-group {
                grid-column: span 1;
                flex-direction: column;
            }
            .hero-value-points {
                order: 2;
            }
            .hero-center-stage {
                order: 1;
            }
            .hero-cta-group {
                order: 3;
            }
            .hero-center-stage h1 {
                font-size: 1.6rem;
            }
            .service-grid-irregular {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-grid-irregular .service-card-large {
                grid-column: span 1;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .process-timeline {
                flex-wrap: wrap;
                gap: 16px;
                justify-content: center;
            }
            .process-step {
                flex: none;
                width: 140px;
                min-width: auto;
            }
            .process-connector {
                display: none;
            }
            .comparison-dual {
                grid-template-columns: 1fr;
            }
            .article-item {
                flex-direction: column;
                gap: 12px;
            }
            .article-thumb {
                width: 100%;
                max-width: 320px;
            }
            .filter-bar {
                gap: 8px;
            }
            .filter-sort {
                margin-left: 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-links {
                justify-content: center;
            }
            .section-py {
                padding: var(--section-py-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-form-inline {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-form-inline input {
                min-width: auto;
            }
            .breadcrumb-bar .container-custom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .breadcrumb-back {
                margin-left: 0;
            }
            .container-custom {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-center-stage h1 {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .comparison-card .comp-metric {
                font-size: 1.8rem;
            }
            .pagination-custom .page-item {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }
            .filter-tag {
                font-size: 0.78rem;
                padding: 5px 10px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }

        a:hover {
            color: var(--color-accent-dark);
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }

        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }

        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }

        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }

        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }

        /* ========== OFFCANVAS ========== */
        .offcanvas-mobile {
            background: var(--color-primary) !important;
            color: #ffffff !important;
        }

        .offcanvas-mobile .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .offcanvas-mobile .btn-close {
            filter: invert(1) brightness(2);
        }

        .offcanvas-mobile .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1.05rem;
            padding: 0.75rem 1rem !important;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-base);
        }

        .offcanvas-mobile .nav-link:hover,
        .offcanvas-mobile .nav-link.active {
            color: #ffffff !important;
            background: rgba(197, 164, 107, 0.1);
            padding-left: 1.4rem !important;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-muted);
        }

        .breadcrumb-custom li a {
            color: var(--color-accent);
            font-weight: 500;
        }

        .breadcrumb-custom li a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        .breadcrumb-custom .separator {
            color: var(--color-border);
            font-size: 0.75rem;
        }

        .breadcrumb-custom .current {
            color: var(--color-text-light);
            font-weight: 500;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent);
            font-size: 0.85rem;
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            background: linear-gradient(135deg, #1a1a1a 0%, #2a2520 40%, #1f1b16 100%);
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.06);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.04);
            pointer-events: none;
        }

        .category-hero .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .category-hero .hero-text {
            flex: 1;
            min-width: 280px;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(197, 164, 107, 0.15);
            color: var(--color-accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .category-hero h1 {
            color: #ffffff;
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .category-hero h1 .accent {
            color: var(--color-accent);
        }

        .category-hero .hero-desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 540px;
        }

        .category-hero .hero-form {
            flex: 0 0 380px;
            min-width: 300px;
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-lg);
        }

        .category-hero .hero-form h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .category-hero .hero-form .form-subtitle {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-bottom: 18px;
        }

        .category-hero .hero-form input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            margin-bottom: 12px;
            background: var(--color-bg);
            transition: all var(--transition-base);
        }

        .category-hero .hero-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.1);
            outline: none;
            background: #ffffff;
        }

        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            width: 100%;
            text-align: center;
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            color: #ffffff;
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(197, 164, 107, 0.35);
        }

        .btn-outline-accent {
            display: inline-block;
            background: transparent;
            color: var(--color-accent);
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            border: 1.5px solid var(--color-accent);
            transition: all var(--transition-base);
            cursor: pointer;
            text-align: center;
        }

        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #ffffff;
            transform: scale(1.02);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-py) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 600px;
            line-height: 1.7;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .deep-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .deep-content p {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--color-text);
            margin-bottom: 18px;
        }

        .deep-content .highlight-box {
            background: var(--color-bg);
            border-left: 3px solid var(--color-accent);
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.8;
        }

        .deep-content .highlight-box strong {
            color: var(--color-accent-dark);
        }

        .deep-content-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            margin: 20px 0;
        }

        .deep-content-img img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        /* ========== CAPABILITY GRID ========== */
        .capability-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }

        .capability-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .capability-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .capability-card.large {
            grid-column: span 2;
            grid-row: span 1;
        }

        .capability-card .cap-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.2rem;
            margin-bottom: 14px;
        }

        .capability-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .capability-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 32px;
        }

        .filter-bar .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
        }

        .filter-tag {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid var(--color-border);
            background: #ffffff;
            color: var(--color-text-light);
            white-space: nowrap;
        }

        .filter-tag:hover,
        .filter-tag.active {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }

        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .filter-sort select {
            padding: 7px 32px 7px 12px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            color: var(--color-text);
            background: #ffffff;
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b6b6b' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 8px center;
            background-size: 14px;
            transition: all var(--transition-base);
        }

        .filter-sort select:focus {
            border-color: var(--color-accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.1);
        }

        /* ========== ARTICLE LIST ========== */
        .article-list-item {
            display: flex;
            gap: 24px;
            align-items: stretch;
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            margin-bottom: 16px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .article-list-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .article-list-item .article-img {
            flex: 0 0 220px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            height: 150px;
        }

        .article-list-item .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform var(--transition-smooth);
        }

        .article-list-item:hover .article-img img {
            transform: scale(1.04);
        }

        .article-list-item .article-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }

        .article-list-item .article-date {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-bottom: 4px;
        }

        .article-list-item .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color var(--transition-base);
        }

        .article-list-item:hover .article-title {
            color: var(--color-accent-dark);
        }

        .article-list-item .article-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-list-item .read-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition-base);
            align-self: flex-start;
        }

        .article-list-item .read-more:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }

        .article-list-item .read-more i {
            font-size: 0.7rem;
            transition: transform var(--transition-base);
        }

        .article-list-item .read-more:hover i {
            transform: translateX(3px);
        }

        /* ========== METRICS ROW ========== */
        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .metric-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .metric-card .metric-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-accent-dark);
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }

        .metric-card .metric-label {
            font-size: 0.85rem;
            color: var(--color-text-light);
            font-weight: 500;
        }

        /* ========== COMPARISON ========== */
        .comparison-duo {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .comparison-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .comparison-card.featured {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .comparison-card.featured::before {
            content: '推荐方案';
            position: absolute;
            top: -13px;
            right: 28px;
            background: var(--color-accent);
            color: #ffffff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        .comparison-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .comparison-card.featured h4 {
            color: var(--color-accent-dark);
        }

        .comparison-card .comp-metric {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .comparison-card.featured .comp-metric {
            color: var(--color-accent-dark);
        }

        .comparison-card .comp-metric {
            color: var(--color-text-muted);
        }

        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .comparison-card ul li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--color-text-light);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-card ul li i {
            font-size: 0.75rem;
        }

        .comparison-card.featured ul li i {
            color: var(--color-accent);
        }

        .comparison-card ul li i {
            color: #ccc;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            background: none;
            border: none;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent-dark);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-base);
            color: var(--color-text-light);
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(197, 164, 107, 0.08);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-answer-inner {
            padding: 0 0 18px 0;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #1a1a1a 0%, #2a2520 100%);
            padding: 60px 0;
            text-align: center;
            border-radius: var(--radius-lg);
            margin: 0 0 var(--section-py) 0;
        }

        .cta-section h2 {
            color: #ffffff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-accent-lg {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
        }

        .cta-section .btn-accent-lg:hover {
            background: var(--color-accent-dark);
            transform: scale(1.03);
            box-shadow: 0 8px 28px rgba(197, 164, 107, 0.4);
            color: #ffffff;
        }

        /* ========== PAGINATION ========== */
        .pagination-custom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
            padding: 20px 0;
        }

        .pagination-custom .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid var(--color-border);
            background: #ffffff;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-base);
        }

        .pagination-custom .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        .pagination-custom .page-btn.active {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }

        .pagination-custom .page-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: #ffffff;
            padding: 50px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #ffffff;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
            transition: color var(--transition-base);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-links span {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .capability-grid {
                grid-template-columns: 1fr 1fr;
            }
            .capability-card.large {
                grid-column: span 2;
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero .hero-inner {
                flex-direction: column;
            }
            .category-hero .hero-form {
                flex: 0 0 auto;
                width: 100%;
            }
            .article-list-item {
                flex-direction: column;
            }
            .article-list-item .article-img {
                flex: 0 0 auto;
                width: 100%;
                height: 180px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-py: 50px;
            }
            .section {
                padding: var(--section-py) 0;
            }
            .container-custom {
                padding: 0 16px;
            }
            .category-hero {
                padding: 40px 0 50px;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .hero-form {
                padding: 24px 18px;
            }
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .capability-card.large {
                grid-column: span 1;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-duo {
                grid-template-columns: 1fr;
            }
            .deep-content {
                padding: 28px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .filter-bar {
                gap: 8px;
            }
            .filter-sort {
                margin-left: 0;
                width: 100%;
            }
            .filter-sort select {
                width: 100%;
            }
            .article-list-item .article-img {
                height: 160px;
            }
            .pagination-custom .page-btn {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .metrics-row {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero .hero-desc {
                font-size: 0.9rem;
            }
            .breadcrumb-custom {
                font-size: 0.78rem;
            }
            .article-list-item .article-img {
                height: 140px;
            }
            .article-list-item .article-title {
                font-size: 0.95rem;
            }
            .filter-tag {
                padding: 5px 10px;
                font-size: 0.75rem;
            }
        }

        /* Animation for metrics */
        @keyframes countUp {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .metric-card.animated .metric-number {
            animation: countUp 0.6s ease-out forwards;
        }

/* roulang page: category6 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }

        a:hover {
            color: var(--color-accent-dark);
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }

        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }

        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }

        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }

        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }

        .site-header .navbar-collapse {
            background: var(--color-primary);
            padding: 12px 16px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            margin-top: 4px;
        }

        /* Offcanvas */
        .offcanvas {
            background: var(--color-primary);
        }

        .offcanvas .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .offcanvas .offcanvas-title {
            color: #ffffff;
            font-weight: 700;
        }

        .offcanvas .btn-close {
            filter: invert(1);
        }

        .offcanvas .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1rem;
            padding: 0.75rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base), color var(--transition-base);
        }

        .offcanvas .nav-link:hover,
        .offcanvas .nav-link.active {
            background: rgba(197, 164, 107, 0.15);
            color: #ffffff !important;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrapper {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
            margin-top: 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.9rem;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--color-text-muted);
        }

        .breadcrumb-custom li a {
            color: var(--color-accent);
            font-weight: 500;
        }

        .breadcrumb-custom li a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        .breadcrumb-custom .separator {
            color: var(--color-border);
            font-size: 0.75rem;
        }

        .breadcrumb-custom .current {
            color: var(--color-text-light);
            font-weight: 500;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent);
            font-weight: 500;
            font-size: 0.9rem;
            margin-left: auto;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        /* ========== HERO ========== */
        .hero-section {
            background: #ffffff;
            padding: 60px 0 50px;
            border-bottom: 1px solid var(--color-border);
        }

        .hero-icon-matrix {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            margin-bottom: 28px;
        }

        .hero-icon-item {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }

        .hero-icon-item:hover {
            border-color: var(--color-accent);
            background: #ffffff;
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            color: var(--color-accent-dark);
        }

        .hero-status-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            margin-bottom: 24px;
            padding: 16px 24px;
            background: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
        }

        .hero-status-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--color-text-light);
        }

        .hero-status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        .hero-status-dot.green {
            background: #4caf84;
            animation-delay: 0.4s;
        }

        .hero-status-dot.amber {
            background: #d4a843;
            animation-delay: 0.8s;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(197, 164, 107, 0.4);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(197, 164, 107, 0);
            }
        }

        .hero-title {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-text);
            text-align: center;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== SECTION TITLES ========== */
        .section-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.02em;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 700px;
            line-height: 1.7;
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }

        .card-custom:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-accent);
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card-custom .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .card-custom .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .card-custom.featured {
            border-color: var(--color-accent);
            border-width: 2px;
            position: relative;
        }

        .card-custom.featured::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        /* ========== BUTTONS ========== */
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            border: none;
            white-space: nowrap;
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            color: #ffffff;
            transform: scale(1.02);
            box-shadow: 0 4px 18px rgba(184, 138, 75, 0.35);
        }

        .btn-outline-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            padding: 11px 27px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            border: 1.5px solid var(--color-accent);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #ffffff;
            transform: scale(1.02);
            box-shadow: 0 4px 18px rgba(184, 138, 75, 0.3);
        }

        /* ========== COMPARISON CARDS ========== */
        .comparison-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            height: 100%;
            transition: all var(--transition-base);
        }

        .comparison-card.weak {
            border-color: #e0dcd5;
            background: #fafaf8;
        }

        .comparison-card.strong {
            border-color: var(--color-accent);
            border-width: 2px;
            background: #fffdf9;
            box-shadow: var(--shadow-md);
        }

        .comparison-card .comparison-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .comparison-card.weak .comparison-label {
            color: var(--color-text-muted);
        }

        .comparison-card.strong .comparison-label {
            color: var(--color-accent);
        }

        .comparison-card .comparison-number {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
            line-height: 1;
        }

        .comparison-card.weak .comparison-number {
            color: #c5c0b8;
        }

        .comparison-card.strong .comparison-number {
            color: var(--color-accent-dark);
        }

        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .comparison-card ul li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--color-text-light);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-card ul li:last-child {
            border-bottom: none;
        }

        .comparison-card ul li i {
            font-size: 0.8rem;
        }

        .comparison-card.weak ul li i {
            color: #c5c0b8;
        }

        .comparison-card.strong ul li i {
            color: var(--color-accent);
        }

        /* ========== FLOW STEPS ========== */
        .flow-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

        .flow-step:last-child {
            border-bottom: none;
        }

        .flow-step:hover {
            background: #fefefe;
            padding-left: 12px;
            border-radius: var(--radius-sm);
        }

        .flow-step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .flow-step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .flow-step-content p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            border: none;
            text-align: left;
            cursor: pointer;
            gap: 12px;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--color-accent);
            flex-shrink: 0;
            transition: all var(--transition-base);
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            background: var(--color-accent);
            border-color: var(--color-accent);
            color: #ffffff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 0;
        }

        .faq-answer.open {
            max-height: 300px;
            padding: 0 0 20px 0;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #fdfbf7 0%, #f8f5ed 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.06);
            pointer-events: none;
        }

        .cta-section .cta-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-desc {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .cta-form-row {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .cta-form-row input {
            flex: 1;
            min-width: 220px;
            max-width: 360px;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background: #ffffff;
            font-size: 0.95rem;
            color: var(--color-text);
        }

        .cta-form-row input::placeholder {
            color: var(--color-text-muted);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 0;
            margin-top: 60px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .site-footer h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .site-footer p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 8px;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }

        .site-footer ul li a:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.8rem;
        }

        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .comparison-card .comparison-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero-section {
                padding: 40px 0 36px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-icon-matrix {
                gap: 12px;
            }
            .hero-icon-item {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
            }
            .hero-status-bar {
                flex-direction: column;
                gap: 10px;
                padding: 12px 16px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .comparison-card {
                padding: 24px 20px;
            }
            .comparison-card .comparison-number {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section .cta-title {
                font-size: 1.3rem;
            }
            .cta-form-row {
                flex-direction: column;
                align-items: center;
            }
            .cta-form-row input {
                max-width: 100%;
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
            .breadcrumb-wrapper {
                padding: 10px 0;
            }
            .breadcrumb-custom {
                font-size: 0.8rem;
                flex-wrap: wrap;
            }
            .breadcrumb-back {
                margin-left: 0;
                margin-top: 6px;
                width: 100%;
                justify-content: flex-end;
            }
            .flow-step {
                flex-direction: column;
                gap: 10px;
                padding: 16px 0;
            }
            .flow-step:hover {
                padding-left: 0;
            }
            .card-custom {
                padding: 20px 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.4rem;
            }
            .hero-icon-item {
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
            .hero-icon-matrix {
                gap: 8px;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .btn-accent,
            .btn-outline-accent {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .comparison-card {
                padding: 18px 14px;
            }
            .comparison-card .comparison-number {
                font-size: 1.5rem;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }

        a:hover {
            color: var(--color-accent-dark);
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            body {
                padding-top: 56px;
            }
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }

        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }

        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }

        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }

        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }

        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: var(--color-primary);
                padding: 12px 16px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                margin-top: 4px;
            }
        }

        /* Offcanvas */
        .offcanvas-mobile {
            background: var(--color-primary) !important;
            color: #ffffff !important;
        }

        .offcanvas-mobile .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 20px;
        }

        .offcanvas-mobile .offcanvas-title {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.2rem;
        }

        .offcanvas-mobile .btn-close {
            filter: invert(1) brightness(2);
        }

        .offcanvas-mobile .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1rem;
            padding: 12px 20px !important;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: block;
            transition: all var(--transition-base);
        }

        .offcanvas-mobile .nav-link:hover,
        .offcanvas-mobile .nav-link.active {
            color: #ffffff !important;
            background: rgba(197, 164, 107, 0.12);
            padding-left: 24px !important;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
            margin-top: 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-light);
        }

        .breadcrumb-nav li a {
            color: var(--color-accent);
            font-weight: 500;
            transition: color var(--transition-base);
        }

        .breadcrumb-nav li a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        .breadcrumb-nav li .separator {
            color: var(--color-text-muted);
            font-size: 0.8rem;
        }

        .breadcrumb-nav li.current {
            color: var(--color-text);
            font-weight: 600;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        @media (max-width: 768px) {
            .breadcrumb-nav {
                font-size: 0.8rem;
            }
            .breadcrumb-back {
                margin-left: 0;
                margin-top: 8px;
            }
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            padding: 60px 0 50px;
            background: linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
        }

        .category-hero .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .category-hero .hero-main-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .category-hero .hero-main-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--color-accent);
            border-radius: 4px 0 0 4px;
        }

        .category-hero .hero-main-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(197, 164, 107, 0.1);
            color: var(--color-accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .category-hero .hero-main-card h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .category-hero .hero-main-card h1 .highlight {
            color: var(--color-accent-dark);
        }

        .category-hero .hero-main-card .hero-desc {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .category-hero .hero-main-card .hero-features {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .category-hero .hero-main-card .hero-features li {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: var(--color-text);
            background: var(--color-bg);
            padding: 6px 14px;
            border-radius: 20px;
            font-weight: 500;
        }

        .category-hero .hero-main-card .hero-features li i {
            color: var(--color-accent);
            font-size: 0.75rem;
        }

        .category-hero .hero-side-panel {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .category-hero .hero-entry-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .category-hero .hero-entry-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .category-hero .hero-entry-card .entry-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(197, 164, 107, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.3rem;
            color: var(--color-accent);
        }

        .category-hero .hero-entry-card .entry-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--color-text);
        }

        .category-hero .hero-entry-card .entry-info p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin: 0;
        }

        @media (max-width: 991px) {
            .category-hero .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-hero .hero-main-card {
                padding: 28px 22px;
            }
            .category-hero .hero-main-card h1 {
                font-size: 1.5rem;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
        }

        /* ========== BUTTONS ========== */
        .btn-accent {
            background: var(--color-accent);
            color: #ffffff !important;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            transform: scale(1.02);
            box-shadow: 0 4px 18px rgba(184, 138, 75, 0.35);
            color: #ffffff !important;
        }

        .btn-accent:active {
            transform: scale(0.98);
        }

        .btn-outline-accent {
            background: transparent;
            color: var(--color-accent);
            border: 1.5px solid var(--color-accent);
            border-radius: var(--radius-sm);
            padding: 11px 26px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #ffffff !important;
            transform: scale(1.02);
            box-shadow: 0 4px 16px rgba(197, 164, 107, 0.3);
        }

        .btn-outline-accent:active {
            transform: scale(0.98);
        }

        /* ========== SECTION TITLES ========== */
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 24px;
            }
        }

        /* ========== SERVICE CARDS GRID ========== */
        .service-cards-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }

        .service-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .service-card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-accent);
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
            line-height: 1.3;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 991px) {
            .service-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 640px) {
            .service-cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .service-card {
                padding: 22px 18px;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-section {
            padding: var(--section-py) 0;
            background: #ffffff;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
            display: none;
        }

        @media (min-width: 992px) {
            .process-steps::before {
                display: block;
            }
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-card);
            border: 2px solid var(--color-accent);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
            margin: 0 auto 16px;
            transition: all var(--transition-smooth);
            position: relative;
            z-index: 2;
        }

        .process-step:hover .step-number {
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(197, 164, 107, 0.35);
            transform: scale(1.08);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.5;
        }

        @media (max-width: 991px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== SCENARIO SECTION ========== */
        .scenario-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: all var(--transition-smooth);
        }

        .scenario-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .scenario-card .sc-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.4rem;
            color: var(--color-accent);
        }

        .scenario-card .sc-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--color-text);
        }

        .scenario-card .sc-info p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenario-card {
                padding: 20px 16px;
            }
        }

        /* ========== ARTICLE LIST ========== */
        .article-list-section {
            padding: var(--section-py) 0;
            background: #ffffff;
        }

        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--color-border);
        }

        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tag {
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-light);
            background: var(--color-bg);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag:hover,
        .filter-tag.active {
            color: var(--color-accent-dark);
            background: rgba(197, 164, 107, 0.08);
            border-color: var(--color-accent);
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-light);
        }

        .filter-sort select {
            padding: 7px 28px 7px 12px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            font-size: 0.85rem;
            color: var(--color-text);
            background: var(--color-bg);
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b6b6b' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 10px center;
            background-size: 14px;
            transition: border-color var(--transition-base);
        }

        .filter-sort select:focus {
            border-color: var(--color-accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.1);
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .article-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

        .article-item:last-child {
            border-bottom: none;
        }

        .article-item:hover {
            background: rgba(197, 164, 107, 0.02);
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }

        .article-item .article-thumb {
            width: 200px;
            height: 130px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg);
        }

        .article-item .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-item:hover .article-thumb img {
            transform: scale(1.04);
        }

        .article-item .article-info {
            flex: 1;
            min-width: 0;
        }

        .article-item .article-date {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .article-item .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-base);
        }

        .article-item:hover .article-title {
            color: var(--color-accent-dark);
        }

        .article-item .article-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-item .read-more {
            font-size: 0.85rem;
            color: var(--color-accent);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-base);
        }

        .article-item .read-more:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }

        @media (max-width: 768px) {
            .article-item {
                flex-direction: column;
                gap: 14px;
                padding: 16px 0;
            }
            .article-item .article-thumb {
                width: 100%;
                height: 180px;
            }
            .article-item:hover {
                padding-left: 0;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            padding: 32px 0 0;
        }

        .pagination-custom {
            display: flex;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .pagination-custom .page-item .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-card);
            color: var(--color-text);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .pagination-custom .page-item .page-link:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(197, 164, 107, 0.04);
        }

        .pagination-custom .page-item.active .page-link {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
            font-weight: 700;
        }

        .pagination-custom .page-item.disabled .page-link {
            color: var(--color-text-muted);
            pointer-events: none;
            opacity: 0.5;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-py) 0;
            background: var(--color-bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color var(--transition-base);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--color-accent-dark);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--color-accent);
            color: #ffffff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
            padding: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 0 18px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 768px) {
            .faq-question {
                font-size: 0.95rem;
                padding: 14px 0;
            }
            .faq-answer p {
                font-size: 0.88rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--section-py) 0;
            background: linear-gradient(135deg, rgba(197, 164, 107, 0.06) 0%, rgba(184, 138, 75, 0.03) 100%);
            position: relative;
        }

        .cta-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .cta-inner p {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #ffffff;
            font-size: 0.95rem;
            color: var(--color-text);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .cta-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.1);
            outline: none;
        }

        .cta-form .btn-accent {
            padding: 12px 28px;
            font-size: 1rem;
            flex-shrink: 0;
        }

        @media (max-width: 640px) {
            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-form input {
                min-width: 100%;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            font-size: 0.88rem;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
            transition: color var(--transition-base);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-links {
                justify-content: center;
            }
        }

        /* ========== UTILITY ========== */
        .py-section {
            padding: var(--section-py) 0;
        }

        @media (max-width: 768px) {
            .py-section {
                padding: var(--section-py-mobile) 0;
            }
            :root {
                --section-py: 50px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-coupon: 0 6px 24px rgba(197, 164, 107, 0.18);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }

        a:hover {
            color: var(--color-accent-dark);
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 0.5em;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }

        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }

        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }

        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }

        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--color-text-light);
        }

        .breadcrumb-nav a {
            color: var(--color-accent);
            font-weight: 500;
            transition: color var(--transition-base);
        }

        .breadcrumb-nav a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        .breadcrumb-nav .separator {
            color: var(--color-border);
            font-size: 0.75rem;
            user-select: none;
        }

        .breadcrumb-nav .current {
            color: var(--color-text-muted);
            font-weight: 500;
            pointer-events: none;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        /* ========== COUPON HERO ========== */
        .coupon-hero {
            padding: var(--section-py) 0;
            background: linear-gradient(180deg, #faf9f6 0%, #f3f1eb 100%);
            position: relative;
            overflow: hidden;
        }

        .coupon-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.06);
            pointer-events: none;
        }

        .coupon-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(184, 138, 75, 0.04);
            pointer-events: none;
        }

        .coupon-hero .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            text-transform: uppercase;
            background: rgba(197, 164, 107, 0.08);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .coupon-hero .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .coupon-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 8px;
        }

        .coupon-wall {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
            margin-top: 40px;
            position: relative;
            z-index: 1;
        }

        .coupon-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1.5px dashed var(--color-border);
            padding: 24px 22px;
            transition: all var(--transition-smooth);
            position: relative;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .coupon-card:hover {
            border-color: var(--color-accent);
            border-style: solid;
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .coupon-card.coupon-main {
            grid-row: 1 / 3;
            border: 2.5px solid var(--color-accent);
            border-style: solid;
            background: linear-gradient(160deg, #ffffff 0%, #fefcf8 100%);
            box-shadow: var(--shadow-coupon);
            padding: 32px 28px;
            position: relative;
            overflow: hidden;
        }

        .coupon-card.coupon-main::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.08);
            pointer-events: none;
        }

        .coupon-card.coupon-main .coupon-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            align-self: flex-start;
        }

        .coupon-card .coupon-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .coupon-card.coupon-main .coupon-icon {
            width: 56px;
            height: 56px;
            font-size: 1.6rem;
            background: rgba(197, 164, 107, 0.14);
        }

        .coupon-card .coupon-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-text);
            line-height: 1.3;
        }

        .coupon-card.coupon-main .coupon-title {
            font-size: 1.5rem;
            font-weight: 800;
        }

        .coupon-card .coupon-desc {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.5;
        }

        .coupon-card .coupon-features {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .coupon-card .coupon-features li {
            font-size: 0.85rem;
            color: var(--color-text-light);
            padding-left: 18px;
            position: relative;
            line-height: 1.5;
        }

        .coupon-card .coupon-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
            font-size: 0.75rem;
        }

        .coupon-card .coupon-price {
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-top: auto;
        }

        .coupon-card .coupon-price .original {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            text-decoration: line-through;
        }

        .coupon-card .coupon-price .current {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent-dark);
        }

        .coupon-card .coupon-price .current.free {
            font-size: 1.4rem;
            color: #c5a46b;
            font-weight: 700;
        }

        .btn-coupon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
            width: 100%;
            text-align: center;
        }

        .btn-coupon:hover {
            background: var(--color-accent-dark);
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(184, 138, 75, 0.35);
            color: #ffffff;
        }

        .btn-coupon-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--color-accent);
            transition: all var(--transition-base);
            cursor: pointer;
            width: 100%;
            text-align: center;
        }

        .btn-coupon-outline:hover {
            background: var(--color-accent);
            color: #ffffff;
            transform: scale(1.02);
        }

        /* ========== SECTION COMMON ========== */
        .section-block {
            padding: var(--section-py) 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 650px;
        }

        /* ========== ADVANTAGE CARDS ========== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .advantage-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .advantage-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .advantage-card .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-accent);
            margin-bottom: 16px;
        }

        .advantage-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .advantage-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }

        .advantage-card .adv-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 3rem;
            font-weight: 800;
            color: rgba(197, 164, 107, 0.08);
            pointer-events: none;
            line-height: 1;
        }

        /* ========== SCENARIO TABS ========== */
        .scenario-block {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 40px;
            margin-top: 40px;
        }

        .scenario-tabs {
            display: flex;
            gap: 0;
            border-bottom: 2px solid var(--color-border);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .scenario-tab {
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-light);
            cursor: pointer;
            border-bottom: 3px solid transparent;
            margin-bottom: -2px;
            transition: all var(--transition-base);
            white-space: nowrap;
            background: none;
            border-top: none;
            border-left: none;
            border-right: none;
        }

        .scenario-tab:hover {
            color: var(--color-accent);
        }

        .scenario-tab.active {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }

        .scenario-panel {
            display: none;
            animation: fadeIn 0.4s ease;
        }

        .scenario-panel.active {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .scenario-panel .scenario-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .scenario-panel .scenario-text h4 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .scenario-panel .scenario-text p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        .scenario-panel .scenario-text ul {
            list-style: none;
            padding: 0;
            margin: 12px 0 0;
        }

        .scenario-panel .scenario-text ul li {
            padding: 6px 0 6px 20px;
            position: relative;
            font-size: 0.9rem;
            color: var(--color-text-light);
        }

        .scenario-panel .scenario-text ul li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
        }

        .scenario-panel .scenario-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .scenario-panel .scenario-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* ========== PROCESS STEPS ========== */
        .process-flow {
            display: flex;
            gap: 0;
            margin-top: 40px;
            position: relative;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding-bottom: 10px;
        }

        .process-step {
            flex: 1;
            min-width: 180px;
            text-align: center;
            position: relative;
            padding: 0 16px;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 32px;
            left: calc(50% + 28px);
            width: calc(100% - 56px);
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step .step-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #ffffff;
            border: 2px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--color-accent);
            position: relative;
            z-index: 1;
            transition: all var(--transition-base);
        }

        .process-step:hover .step-circle {
            border-color: var(--color-accent);
            background: rgba(197, 164, 107, 0.06);
            box-shadow: 0 4px 16px rgba(197, 164, 107, 0.2);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .process-step p {
            font-size: 0.8rem;
            color: var(--color-text-light);
            line-height: 1.5;
            margin: 0;
        }

        /* ========== COMPARISON ========== */
        .comparison-dual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: 40px;
        }

        .comparison-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
        }

        .comparison-card.card-highlight {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-coupon);
            background: linear-gradient(160deg, #ffffff 0%, #fefcf8 100%);
            position: relative;
        }

        .comparison-card.card-highlight::after {
            content: '推荐方案';
            position: absolute;
            top: -14px;
            right: 24px;
            background: var(--color-accent);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        .comparison-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .comparison-card.card-highlight h3 {
            color: var(--color-accent-dark);
        }

        .comparison-card .comp-metric {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin-bottom: 6px;
        }

        .comparison-card .comp-metric .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-text-muted);
        }

        .comparison-card.card-highlight .comp-metric .metric-value {
            color: var(--color-accent-dark);
        }

        .comparison-card .comp-metric .metric-unit {
            font-size: 0.9rem;
            color: var(--color-text-light);
        }

        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }

        .comparison-card ul li {
            padding: 7px 0 7px 22px;
            position: relative;
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.5;
        }

        .comparison-card ul li::before {
            content: '✗';
            position: absolute;
            left: 0;
            color: #c0c0c0;
            font-weight: 700;
            font-size: 0.8rem;
        }

        .comparison-card.card-highlight ul li::before {
            content: '✓';
            color: var(--color-accent);
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 48px 40px;
            margin-top: 40px;
        }

        .deep-content-block h2 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--color-text);
        }

        .deep-content-block .content-body {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.9;
        }

        .deep-content-block .content-body p {
            margin-bottom: 18px;
        }

        .deep-content-block .content-body .highlight-box {
            background: rgba(197, 164, 107, 0.06);
            border-left: 3px solid var(--color-accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-style: italic;
            color: var(--color-text);
        }

        /* ========== FAQ ========== */
        .faq-list {
            margin-top: 40px;
            border-top: 1px solid var(--color-border);
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 12px;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--color-accent);
            color: #ffffff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 0;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 0 20px 0;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #faf9f6 0%, #f3f1eb 50%, #faf9f6 100%);
            padding: var(--section-py) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(197, 164, 107, 0.04);
            pointer-events: none;
        }

        .cta-section .cta-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            max-width: 700px;
            margin: 0 auto;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            background: #ffffff;
            color: var(--color-text);
            transition: all var(--transition-base);
        }

        .cta-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12);
            outline: none;
        }

        .btn-cta-submit {
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 32px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .btn-cta-submit:hover {
            background: var(--color-accent-dark);
            transform: scale(1.03);
            box-shadow: 0 6px 20px rgba(184, 138, 75, 0.4);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin: 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-links span {
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.8rem;
            transition: color var(--transition-base);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        /* ========== OFFCANVAS ========== */
        .offcanvas {
            background: var(--color-primary);
            color: #ffffff;
        }

        .offcanvas .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .offcanvas .offcanvas-title {
            color: #ffffff;
            font-weight: 700;
        }

        .offcanvas .btn-close {
            filter: invert(1);
        }

        .offcanvas .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1rem;
            padding: 10px 16px !important;
            font-weight: 500;
        }

        .offcanvas .nav-link:hover,
        .offcanvas .nav-link.active {
            color: #ffffff !important;
            background: rgba(197, 164, 107, 0.15);
            border-radius: var(--radius-sm);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .coupon-wall {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .coupon-card.coupon-main {
                grid-row: auto;
                grid-column: 1 / -1;
            }
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-dual {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scenario-panel .scenario-content {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .coupon-hero .hero-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .coupon-wall {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .coupon-card.coupon-main {
                grid-column: auto;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
            }
            .process-flow {
                flex-wrap: wrap;
                gap: 16px;
            }
            .process-step {
                flex: 0 0 calc(50% - 8px);
                min-width: auto;
            }
            .process-step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .section-block {
                padding: var(--section-py-mobile) 0;
            }
            .coupon-hero {
                padding: var(--section-py-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .coupon-hero .hero-title {
                font-size: 1.8rem;
            }
            .deep-content-block {
                padding: 28px 20px;
            }
            .scenario-block {
                padding: 24px 16px;
            }
            .scenario-tab {
                padding: 10px 14px;
                font-size: 0.85rem;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                min-width: auto;
                width: 100%;
            }
            .btn-cta-submit {
                width: 100%;
            }
            .comparison-card {
                padding: 24px 18px;
            }
            .comparison-card h3 {
                font-size: 1.1rem;
            }
            .breadcrumb-nav {
                font-size: 0.8rem;
            }
            .breadcrumb-back {
                margin-left: 0;
                margin-top: 6px;
            }
        }

        @media (max-width: 520px) {
            .coupon-hero .hero-title {
                font-size: 1.5rem;
            }
            .coupon-card.coupon-main {
                padding: 22px 16px;
            }
            .coupon-card {
                padding: 18px 14px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .process-step {
                flex: 0 0 100%;
            }
            .cta-section .cta-card {
                padding: 28px 18px;
            }
            .container-custom {
                padding: 0 12px;
            }
        }

/* roulang page: category7 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #c5a46b;
            --color-accent-dark: #b88a4b;
            --color-bg: #faf9f6;
            --color-card: #ffffff;
            --color-border: #e8e4dd;
            --color-text: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #9a9a9a;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 10px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-py: 80px;
            --section-py-mobile: 50px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 60px;
        }

        a {
            text-decoration: none;
            color: var(--color-accent);
            transition: color var(--transition-base), border-color var(--transition-base);
        }

        a:hover {
            color: var(--color-accent-dark);
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-stack);
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

        input,
        textarea {
            font-family: var(--font-stack);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.12) !important;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 60px;
        }

        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: #ffffff !important;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #ffffff;
            flex-shrink: 0;
        }

        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transition: transform var(--transition-base);
            border-radius: 1px;
        }

        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: #ffffff !important;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            transform: scaleX(1);
        }

        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }

        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.25);
        }

        /* Offcanvas */
        .offcanvas-custom {
            background: var(--color-primary);
            color: #ffffff;
        }

        .offcanvas-custom .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .offcanvas-custom .btn-close {
            filter: invert(1);
        }

        .offcanvas-custom .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-size: 1rem;
            padding: 0.75rem 1rem !important;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-base);
        }

        .offcanvas-custom .nav-link:hover,
        .offcanvas-custom .nav-link.active {
            color: #ffffff !important;
            background: rgba(197, 164, 107, 0.1);
            padding-left: 1.4rem !important;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrapper {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-muted);
        }

        .breadcrumb-custom li a {
            color: var(--color-accent);
            font-weight: 500;
            transition: color var(--transition-base);
        }

        .breadcrumb-custom li a:hover {
            color: var(--color-accent-dark);
        }

        .breadcrumb-custom .separator {
            color: var(--color-border);
            font-size: 0.75rem;
        }

        .breadcrumb-custom .current {
            color: var(--color-text-light);
            font-weight: 500;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .breadcrumb-back:hover {
            color: var(--color-accent-dark);
        }

        /* ========== HERO ========== */
        .hero-section {
            background: linear-gradient(180deg, #1a1a1a 0%, #2a2520 40%, #1f1c18 100%);
            padding: 50px 0 60px;
            position: relative;
            overflow: hidden;
            color: #ffffff;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(197, 164, 107, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(197, 164, 107, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .hero-content h1 .highlight {
            color: var(--color-accent);
            position: relative;
        }

        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 480px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            border: none;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--color-accent-dark);
            color: #ffffff;
            transform: scale(1.02);
            box-shadow: 0 6px 24px rgba(197, 164, 107, 0.35);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition-base);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: scale(1.02);
            background: rgba(197, 164, 107, 0.06);
        }

        /* Countdown Ring */
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 20px;
        }

        .countdown-ring-wrap {
            position: relative;
            width: 220px;
            height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .countdown-ring-wrap svg {
            transform: rotate(-90deg);
            width: 220px;
            height: 220px;
        }

        .countdown-ring-wrap .ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, 0.1);
            stroke-width: 8;
        }

        .countdown-ring-wrap .ring-progress {
            fill: none;
            stroke: var(--color-accent);
            stroke-width: 8;
            stroke-linecap: round;
            transition: stroke-dashoffset 1s ease;
        }

        .countdown-inner {
            position: absolute;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .countdown-inner .countdown-number {
            font-size: 3.2rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1;
            letter-spacing: -0.02em;
        }

        .countdown-inner .countdown-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }

        .countdown-sub-text {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
            letter-spacing: 0.02em;
        }

        /* Dot indicators */
        .hero-dots {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin-top: 8px;
        }

        .hero-dots .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: all var(--transition-base);
        }

        .hero-dots .dot.active {
            background: var(--color-accent);
            width: 28px;
            border-radius: 5px;
        }

        .hero-dots .dot:hover {
            background: rgba(255, 255, 255, 0.55);
        }

        /* ========== SECTION COMMON ========== */
        .section-pad {
            padding: var(--section-py) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 650px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        /* ========== METRICS STRIP ========== */
        .metrics-strip {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 28px 0;
        }

        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .metric-item .metric-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-accent-dark);
            line-height: 1.1;
            letter-spacing: -0.01em;
        }

        .metric-item .metric-label {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }

        .card-custom:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(197, 164, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.3rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card-custom h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .card-custom p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.6;
        }

        .card-highlight {
            border-left: 4px solid var(--color-accent);
        }

        /* ========== FLOW STEPS ========== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }

        .flow-step .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 700;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            position: relative;
            z-index: 2;
            transition: all var(--transition-base);
        }

        .flow-step:hover .step-number {
            background: var(--color-accent-dark);
            transform: scale(1.08);
            box-shadow: 0 6px 20px rgba(197, 164, 107, 0.3);
        }

        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .flow-step p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.5;
        }

        .flow-connector {
            position: absolute;
            top: 45px;
            left: calc(50% + 30px);
            width: calc(100% - 60px);
            height: 2px;
            background: var(--color-border);
            z-index: 1;
        }

        /* ========== COMPARISON ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .comparison-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all var(--transition-base);
        }

        .comparison-card.recommended {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .comparison-card.recommended::before {
            content: '推荐方案';
            position: absolute;
            top: -13px;
            left: 28px;
            background: var(--color-accent);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        .comparison-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .comparison-card .comp-metric {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-text-light);
            margin-bottom: 4px;
            line-height: 1.1;
        }

        .comparison-card.recommended .comp-metric {
            color: var(--color-accent-dark);
        }

        .comparison-card .comp-metric-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }

        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .comparison-card ul li {
            font-size: 0.9rem;
            color: var(--color-text-light);
            padding: 6px 0;
            padding-left: 22px;
            position: relative;
            line-height: 1.5;
        }

        .comparison-card ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #d0d0d0;
        }

        .comparison-card.recommended ul li::before {
            background: var(--color-accent);
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: 40px 36px;
            box-shadow: var(--shadow-sm);
        }

        .deep-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .deep-content p {
            font-size: 1rem;
            color: var(--color-text-light);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-content blockquote {
            border-left: 3px solid var(--color-accent);
            padding: 16px 20px;
            margin: 20px 0;
            background: rgba(197, 164, 107, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--color-text-light);
            font-size: 0.95rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color var(--transition-base);
            line-height: 1.4;
        }

        .faq-question:hover {
            color: var(--color-accent-dark);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 2px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-base);
            color: var(--color-text-light);
        }

        .faq-item.open .faq-question .faq-icon {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(197, 164, 107, 0.06);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #1a1a1a 0%, #2a2520 50%, #1f1c18 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(197, 164, 107, 0.06) 0%, transparent 65%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 520px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            font-size: 0.95rem;
            transition: all var(--transition-base);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .cta-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.14);
            box-shadow: 0 0 0 3px rgba(197, 164, 107, 0.15);
        }

        .cta-form .btn-primary-custom {
            padding: 13px 28px;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 30px;
            margin-bottom: 32px;
        }

        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .site-footer p {
            margin: 0;
            line-height: 1.7;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 8px;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }

        .site-footer ul li a:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
            transition: color var(--transition-base);
        }

        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-links span {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.8rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-visual {
                order: -1;
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-connector {
                display: none;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: var(--section-py-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .hero-content h1 {
                font-size: 1.9rem;
            }
            .countdown-ring-wrap {
                width: 160px;
                height: 160px;
            }
            .countdown-ring-wrap svg {
                width: 160px;
                height: 160px;
            }
            .countdown-inner .countdown-number {
                font-size: 2.4rem;
            }
            .flow-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content {
                padding: 24px 18px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
            .container-custom {
                padding: 0 16px;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                min-width: auto;
            }
            .cta-form .btn-primary-custom {
                width: 100%;
                justify-content: center;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta-group .btn-primary-custom,
            .hero-cta-group .btn-outline-custom {
                justify-content: center;
            }
            .breadcrumb-custom {
                font-size: 0.8rem;
            }
            .breadcrumb-back {
                margin-left: 0;
                margin-top: 6px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.55rem;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-item .metric-number {
                font-size: 1.8rem;
            }
            .comparison-card {
                padding: 20px 16px;
            }
            .comparison-card .comp-metric {
                font-size: 1.6rem;
            }
            .site-header .navbar-brand {
                font-size: 1.15rem;
            }
            .site-header .navbar-brand .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 0.85rem;
            }
        }