/* roulang page: index */
:root {
            --primary: #3B82F6;
            --primary-deep: #1E40AF;
            --accent: #06B6D4;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --surface-blue: #EFF4FB;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E8EDF5;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-tag: 6px;
            --radius-input: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
            --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
            --transition: 0.2s ease;
            --section-pad: 56px 0;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input {
            font-family: var(--font-family);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad);
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .section:nth-of-type(even) {
            background: var(--bg);
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .text-left {
            text-align: left;
        }
        .row {
            max-width: 1200px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }
        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.65;
        }
        .card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .card .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #2563EB;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        .btn-deep {
            background: var(--primary-deep);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
        }
        .btn-deep:hover,
        .btn-deep:focus {
            background: #1a3a8f;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            border-color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .btn-white-outline {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-deep);
            border: 2px solid rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
        }
        .btn-white-outline:hover,
        .btn-white-outline:focus {
            background: #fff;
            color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }
        .btn-block {
            width: 100%;
        }
        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            background: var(--surface-blue);
            color: var(--primary-deep);
            letter-spacing: 0.3px;
            margin-right: 6px;
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .tag-accent {
            background: rgba(6, 182, 212, 0.12);
            color: #0891b2;
        }
        .tag-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.3px;
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 24px 0;
        }
        .divider-light {
            border-top-color: rgba(255, 255, 255, 0.2);
        }

        /* Navigation */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(30, 64, 175, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: all var(--transition);
        }
        .site-header .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-header .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .site-header .logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .site-header .logo:hover,
        .site-header .logo:focus {
            color: var(--primary-deep);
        }
        .site-header .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-header .nav-links li a {
            display: block;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            position: relative;
        }
        .site-header .nav-links li a:hover,
        .site-header .nav-links li a:focus {
            color: var(--primary);
            background: var(--surface-blue);
        }
        .site-header .nav-links li a.active {
            color: var(--primary-deep);
            background: var(--surface-blue);
            font-weight: 600;
        }
        .site-header .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .site-header .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-header .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            padding: 0 16px;
            height: 40px;
            transition: all var(--transition);
            min-width: 180px;
        }
        .site-header .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            background: #fff;
        }
        .site-header .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            width: 100%;
            padding: 0;
        }
        .site-header .search-box input::placeholder {
            color: var(--text-muted);
            font-size: 13px;
        }
        .site-header .search-box .search-icon {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: all var(--transition);
        }
        .hamburger:hover {
            background: var(--surface-blue);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, #EFF4FB 0%, #DBEAFE 35%, #E0F2FE 70%, #F0F9FF 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(2px);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
            padding: 20px 0;
        }
        .hero-content h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 18px;
            letter-spacing: 1px;
            line-height: 1.3;
        }
        .hero-content h1 .highlight {
            color: var(--primary-deep);
            position: relative;
            display: inline-block;
        }
        .hero-content .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.75;
        }
        .hero-content .hero-cta {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .hero-content .hero-stats {
            display: flex;
            gap: 28px;
            justify-content: center;
            flex-wrap: wrap;
            padding-top: 12px;
            border-top: 1px solid rgba(30, 64, 175, 0.12);
        }
        .hero-content .hero-stats .stat-item {
            text-align: center;
        }
        .hero-content .hero-stats .stat-item .stat-num {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            display: block;
            letter-spacing: 0.5px;
        }
        .hero-content .hero-stats .stat-item .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }

        /* Image placeholders */
        .img-cover {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-card);
            background: var(--surface-blue);
        }
        .img-cover-sm {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 8px;
            background: var(--surface-blue);
        }
        .img-banner {
            width: 100%;
            aspect-ratio: 21/9;
            object-fit: cover;
            border-radius: var(--radius-card);
            background: var(--surface-blue);
        }
        .img-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
            background: var(--surface-blue);
            flex-shrink: 0;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            text-align: left;
            height: 100%;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .feature-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .feature-card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 10px;
            line-height: 1.6;
        }
        .feature-card a {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .feature-card a:hover {
            color: var(--primary-deep);
            gap: 8px;
        }

        /* Scenario Cards */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .scenario-card .scenario-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .scenario-card .scenario-body {
            padding: 18px 20px 20px;
        }
        .scenario-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Demo Cards */
        .demo-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .demo-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .demo-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .demo-card .demo-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .demo-card .demo-body {
            padding: 16px 18px 18px;
        }
        .demo-card .demo-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Case Cards */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .case-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
        }
        .case-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .case-card .case-metric {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 0.5px;
            display: block;
            margin-bottom: 6px;
        }
        .case-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }
        .case-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Price Cards */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }
        .price-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .price-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .price-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }
        .price-card.featured::before {
            content: '推荐';
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-tag);
        }
        .price-card .price-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
        }
        .price-card .price-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 0.5px;
            margin: 4px 0;
        }
        .price-card .price-num .price-unit {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .price-card .price-features {
            list-style: none;
            margin: 16px 0 20px;
            padding: 0;
            text-align: left;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .price-card .price-features li {
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .price-card .price-features li i {
            color: var(--primary);
            font-size: 13px;
        }

        /* Review Cards */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 22px;
            transition: all var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .review-card .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .review-card .review-header .review-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: block;
        }
        .review-card .review-header .review-role {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
        }
        .review-card .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }
        .review-card .review-stars {
            color: #F59E0B;
            font-size: 13px;
            margin-bottom: 8px;
        }

        /* Post Cards */
        .post-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            transition: all var(--transition);
        }
        .post-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .post-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .post-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 10px;
            line-height: 1.6;
        }
        .post-card .post-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        /* Stats */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
        }
        .stats-bar .stat-block {
            text-align: center;
            padding: 8px;
        }
        .stats-bar .stat-block .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 0.5px;
            display: block;
            margin-bottom: 4px;
        }
        .stats-bar .stat-block .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* News Cards */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .news-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .news-card .news-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .news-card .news-body {
            padding: 16px 18px 18px;
        }
        .news-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .news-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0 0 10px;
            line-height: 1.55;
        }
        .news-card .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }

        /* FAQ Accordion */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            max-width: 820px;
        }
        .faq-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-accordion .accordion-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
        }
        .faq-accordion .accordion-item .accordion-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .faq-accordion .accordion-item .accordion-title:hover {
            color: var(--primary-deep);
            background: var(--surface-blue);
        }
        .faq-accordion .accordion-item .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-accordion .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-accordion .accordion-item .accordion-content {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
            animation: fadeIn 0.25s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
            border-radius: var(--radius-card);
            padding: 48px 36px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
            pointer-events: none;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.2);
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn {
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn-white-outline {
            background: #fff;
            color: var(--primary-deep);
            border: none;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .cta-banner .btn-white-outline:hover {
            background: #f0f4ff;
            color: var(--primary-deep);
        }

        /* Partner logos */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-logo {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 18px 12px;
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 64px;
        }
        .partner-logo:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--surface-blue);
            box-shadow: var(--shadow-sm);
        }

        /* Player Cards */
        .player-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .player-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .player-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .player-card .player-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            margin: 0 auto 12px;
            font-weight: 600;
            letter-spacing: 1px;
        }
        .player-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
        }
        .player-card .player-specialty {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 8px;
        }
        .player-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Schedule list */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .schedule-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            flex-wrap: wrap;
        }
        .schedule-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .schedule-item .schedule-date {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-deep);
            min-width: 90px;
            text-align: center;
            letter-spacing: 0.3px;
        }
        .schedule-item .schedule-info {
            flex: 1;
            min-width: 200px;
        }
        .schedule-item .schedule-info .schedule-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: block;
            margin-bottom: 2px;
        }
        .schedule-item .schedule-info .schedule-teams {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .schedule-item .schedule-status {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }
        .schedule-status.live {
            background: rgba(239, 68, 68, 0.12);
            color: #DC2626;
        }
        .schedule-status.upcoming {
            background: var(--surface-blue);
            color: var(--primary-deep);
        }
        .schedule-status.finished {
            background: var(--bg);
            color: var(--text-muted);
        }

        /* Equipment cards */
        .equipment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .equipment-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .equipment-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .equipment-card .equipment-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .equipment-card .equipment-body {
            padding: 16px 18px 18px;
        }
        .equipment-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .equipment-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.55;
        }
        .equipment-card .equipment-spec {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 6px;
        }

        /* Footer */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            box-shadow: 0 -2px 12px rgba(30, 64, 175, 0.04);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-brand .footer-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
        }
        .site-footer .footer-brand p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0 0 16px;
            max-width: 280px;
        }
        .site-footer .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .footer-links a {
            font-size: 12px;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media screen and (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .demo-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .equipment-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-header .nav-links li a {
                padding: 6px 10px;
                font-size: 14px;
            }
            .site-header .search-box {
                min-width: 140px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media screen and (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .site-header .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                flex-direction: column;
                padding: 12px 20px;
                gap: 4px;
                z-index: 99;
            }
            .site-header .nav-links.is-open {
                display: flex;
                animation: slideDown 0.25s ease;
            }
            .site-header .nav-links li {
                width: 100%;
            }
            .site-header .nav-links li a {
                display: block;
                padding: 10px 14px;
                border-radius: 8px;
                font-size: 15px;
            }
            .site-header .nav-links li a.active::after {
                display: none;
            }
            .site-header .search-box {
                display: none;
            }
            .site-header .header-actions .btn {
                padding: 8px 16px;
                font-size: 13px;
            }
            @keyframes slideDown {
                from {
                    opacity: 0;
                    transform: translateY(-8px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }
            .hero {
                padding: 48px 0 44px;
            }
            .hero-content h1 {
                font-size: 26px;
                letter-spacing: 0.5px;
            }
            .hero-content .hero-subtitle {
                font-size: 14px;
                line-height: 1.6;
                margin-bottom: 20px;
            }
            .hero-content .hero-cta {
                flex-direction: column;
                gap: 10px;
                align-items: center;
            }
            .hero-content .hero-cta .btn {
                width: 100%;
                max-width: 280px;
            }
            .hero-content .hero-stats {
                gap: 16px;
            }
            .hero-content .hero-stats .stat-item .stat-num {
                font-size: 18px;
            }
            .section {
                padding: 32px 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .section-header p {
                font-size: 14px;
            }
            .feature-grid,
            .scenario-grid,
            .demo-grid,
            .case-grid,
            .price-grid,
            .review-grid,
            .post-grid,
            .news-grid,
            .equipment-grid,
            .player-grid {
                grid-template-columns: 1fr;
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 16px;
                gap: 12px;
            }
            .stats-bar .stat-block .stat-number {
                font-size: 26px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner h2 {
                font-size: 20px;
            }
            .cta-banner p {
                font-size: 14px;
            }
            .schedule-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 14px 16px;
            }
            .schedule-item .schedule-date {
                text-align: left;
                min-width: auto;
            }
            .container {
                padding: 0 16px;
            }
            .container-wide {
                padding: 0 16px;
            }
            .card {
                padding: 18px;
            }
            .feature-card {
                padding: 18px;
            }
        }
        @media screen and (max-width: 520px) {
            .site-header .navbar {
                padding: 10px 0;
                gap: 8px;
            }
            .site-header .logo {
                font-size: 17px;
            }
            .site-header .logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .hero-content h1 {
                font-size: 22px;
            }
            .hero-content .hero-subtitle {
                font-size: 13px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .partner-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                padding: 12px;
            }
            .stats-bar .stat-block .stat-number {
                font-size: 22px;
            }
            .cta-banner {
                padding: 24px 16px;
                border-radius: 8px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #3B82F6;
            --primary-deep: #1E40AF;
            --accent: #06B6D4;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --surface-blue: #EFF4FB;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E8EDF5;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-tag: 6px;
            --radius-input: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
            --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
            --transition: 0.2s ease;
            --section-pad: 56px 0;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input {
            font-family: var(--font-family);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .row {
            max-width: 1200px;
        }

        /* Header / Nav */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(30, 64, 175, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
            width: 100%;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            padding: 0 20px;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex: 1;
            gap: 24px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            text-decoration: none;
        }

        .logo:hover,
        .logo:focus {
            color: var(--primary-deep);
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 6px;
        }

        .nav-links li {
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
            text-decoration: none;
        }

        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary-deep);
            background: var(--surface-blue);
        }

        .nav-links a.active {
            color: var(--primary-deep);
            background: var(--surface-blue);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 0 12px;
            height: 38px;
            transition: all var(--transition);
            min-width: 200px;
        }

        .search-box:hover,
        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            width: 100%;
            padding: 8px 0;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
            line-height: 1.4;
            font-family: var(--font-family);
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: #2563EB;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

        .btn-deep {
            background: var(--primary-deep);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
        }

        .btn-deep:hover,
        .btn-deep:focus {
            background: #172554;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 64, 175, 0.4);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 2px solid var(--primary);
            box-shadow: none;
        }

        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            border-color: var(--primary-deep);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
            font-weight: 600;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 110;
        }

        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
            display: block;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        .breadcrumb a:hover,
        .breadcrumb a:focus {
            color: var(--primary);
        }

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 12px;
        }

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

        /* Section base */
        .section {
            padding: var(--section-pad);
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .section:nth-of-type(even) {
            background: var(--bg);
        }

        .section-header {
            text-align: left;
            margin-bottom: 32px;
        }

        .section-header h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 10px;
            letter-spacing: 0.5px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        /* Category hero (non-Hero style) */
        .category-hero {
            background: linear-gradient(135deg, #FFFFFF 0%, #EFF4FB 100%);
            padding: 40px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .category-hero .breadcrumb {
            margin-bottom: 18px;
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .category-hero .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
            margin: 0;
        }

        /* Focus card */
        .focus-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .focus-media {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card) 0 0 var(--radius-card);
            min-height: 280px;
        }

        .focus-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card) 0 0 var(--radius-card);
        }

        .focus-body {
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .focus-body .badge {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 14px;
            align-self: flex-start;
        }

        .focus-body h3 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .focus-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 18px;
        }

        .focus-body .btn {
            align-self: flex-start;
        }

        /* List compact cards */
        .list-card {
            display: flex;
            flex-direction: row;
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 18px 20px;
            gap: 20px;
            transition: all var(--transition);
            height: 100%;
            align-items: center;
        }

        .list-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .list-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: 8px;
            overflow: hidden;
        }

        .list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 8px;
        }

        .list-content {
            flex: 1;
            min-width: 0;
        }

        .list-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
            line-height: 1.35;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .list-content p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 8px;
            line-height: 1.55;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .list-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .list-meta .tag {
            background: var(--surface-blue);
            color: var(--primary-deep);
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 500;
        }

        /* Tag cloud / category tags */
        .tag-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }

        .tag-item:hover,
        .tag-item:focus {
            background: var(--surface-blue);
            border-color: var(--primary);
            color: var(--primary-deep);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .tag-item i {
            color: var(--accent);
            font-size: 14px;
        }

        /* Steps / beginner guide */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            position: relative;
            transition: all var(--transition);
            counter-increment: step;
        }

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* Related resources list */
        .related-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .related-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
            gap: 16px;
        }

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

        .related-item:hover {
            background: var(--surface-blue);
        }

        .related-item .related-title {
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            text-decoration: none;
            flex: 1;
        }

        .related-item:hover .related-title {
            color: var(--primary-deep);
        }

        .related-item .arrow {
            color: var(--text-muted);
            font-size: 14px;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .related-item:hover .arrow {
            color: var(--primary);
            transform: translateX(4px);
        }

        /* FAQ accordion */
        .accordion-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }

        .faq-accordion .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-decoration: none;
            transition: all var(--transition);
            gap: 16px;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-family);
        }

        .faq-accordion .accordion-title:hover,
        .faq-accordion .accordion-title:focus {
            color: var(--primary-deep);
            background: var(--surface-blue);
        }

        .faq-accordion .accordion-title .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 14px;
            transition: transform var(--transition);
        }

        .faq-accordion .accordion-item.is-active .accordion-title .faq-icon {
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-content {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* CTA band */
        .cta-band {
            background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
            border-radius: var(--radius-card);
            padding: 44px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: var(--shadow-lg);
        }

        .cta-band .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
            letter-spacing: 0.5px;
        }

        .cta-band .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
            line-height: 1.6;
        }

        .cta-band .btn-white {
            background: #fff;
            color: var(--primary-deep);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.3);
            flex-shrink: 0;
        }

        .cta-band .btn-white:hover,
        .cta-band .btn-white:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.4);
        }

        /* Footer */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 28px;
            color: var(--text-secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .logo-icon-sm {
            width: 30px;
            height: 30px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 14px;
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition);
        }

        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-links {
            display: flex;
            gap: 20px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-links a:hover,
        .footer-links a:focus {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .focus-card {
                grid-template-columns: 1fr;
            }

            .focus-media {
                border-radius: var(--radius-card) var(--radius-card) 0 0;
                min-height: 220px;
            }

            .focus-media img {
                border-radius: var(--radius-card) var(--radius-card) 0 0;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-band {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: auto;
                min-height: 60px;
                flex-wrap: wrap;
                padding: 10px 20px;
            }

            .navbar {
                flex-wrap: wrap;
                gap: 10px;
            }

            .hamburger {
                display: flex;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                background: #fff;
                border-radius: 0 0 var(--radius-card) var(--radius-card);
                box-shadow: var(--shadow-md);
                padding: 12px 0;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                z-index: 100;
                border: 1px solid var(--border);
                border-top: none;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                border-radius: 0;
            }

            .header-actions {
                margin-left: auto;
            }

            .search-box {
                min-width: 120px;
                flex: 1;
            }

            .search-box input {
                width: 80px;
            }

            .btn-sm {
                padding: 8px 14px;
                font-size: 13px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .focus-body {
                padding: 24px 20px;
            }

            .focus-body h3 {
                font-size: 20px;
            }

            .list-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }

            .list-thumb {
                width: 100%;
                height: 160px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 36px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 24px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }

            .btn-lg {
                padding: 14px 28px;
                font-size: 16px;
            }

            .search-box {
                display: none;
            }

            .cta-band .cta-text h2 {
                font-size: 22px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #3B82F6;
            --primary-deep: #1E40AF;
            --accent: #06B6D4;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --surface-blue: #EFF4FB;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E8EDF5;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-tag: 6px;
            --radius-input: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
            --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
            --transition: 0.2s ease;
            --section-pad: 56px 0;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input {
            font-family: var(--font-family);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad);
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .section:nth-of-type(even) {
            background: var(--bg);
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .text-left {
            text-align: left;
        }
        .row {
            max-width: 1200px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }
        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.65;
        }
        .card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .card .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #2563EB;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        .btn-deep {
            background: var(--primary-deep);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
        }
        .btn-deep:hover,
        .btn-deep:focus {
            background: #1a3a8f;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 64, 175, 0.4);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 2px solid var(--primary);
            box-shadow: none;
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            border-color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }
        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.3px;
            background: var(--surface-blue);
            color: var(--primary-deep);
        }
        .badge-accent {
            background: rgba(6, 182, 212, 0.1);
            color: #0e8fa5;
        }
        .badge-live {
            background: #FEE2E2;
            color: #DC2626;
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }
        /* Header/Nav */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(30, 64, 175, 0.05);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--primary);
            background: var(--surface-blue);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: var(--surface-blue);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 6px 12px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            background: #fff;
        }
        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            outline: none;
            width: 160px;
            padding: 2px 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--surface-blue);
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg);
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb li a:hover {
            color: var(--primary-deep);
        }
        .breadcrumb li.current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .breadcrumb-sep {
            color: var(--text-muted);
            font-size: 12px;
        }
        /* Page Title */
        .page-title-section {
            background: var(--surface);
            padding: 36px 0 24px;
            border-bottom: 1px solid var(--border);
        }
        .page-title-section h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        /* Intro */
        .intro-section {
            padding: 20px 0 0;
            background: var(--surface);
        }
        .intro-box {
            background: var(--surface-blue);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            border-left: 4px solid var(--primary);
        }
        /* Featured */
        .feature-section {
            padding: 36px 0 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .feature-card {
            display: flex;
            flex-direction: row;
            gap: 28px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .feature-img {
            flex: 0 0 45%;
            min-height: 280px;
            border-radius: 0;
            object-fit: cover;
        }
        .feature-body {
            padding: 28px 24px 24px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 10px;
        }
        .feature-body .badge {
            align-self: flex-start;
        }
        .feature-body h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
        }
        .feature-body p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .feature-body .btn {
            align-self: flex-start;
            margin-top: 8px;
        }
        /* List Cards */
        .list-section {
            padding: 36px 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .list-card {
            display: flex;
            flex-direction: column;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .list-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .list-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
            background: var(--surface-blue);
        }
        .list-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .list-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
            line-height: 1.4;
        }
        .list-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .list-card-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }
        .list-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            padding-top: 12px;
            margin-top: auto;
            font-size: 13px;
        }
        .list-card-footer a {
            font-weight: 500;
        }
        /* Calendar */
        .calendar-section {
            padding: 36px 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .event-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            transition: all var(--transition);
            flex-wrap: wrap;
        }
        .event-row:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
        }
        .event-date {
            flex: 0 0 80px;
            text-align: center;
            background: var(--surface-blue);
            border-radius: var(--radius-tag);
            padding: 8px 6px;
        }
        .event-date .day {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            line-height: 1.2;
        }
        .event-date .month {
            font-size: 12px;
            color: var(--text-secondary);
        }
        .event-info {
            flex: 1;
            min-width: 200px;
        }
        .event-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
        }
        .event-info p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
        }
        .event-status {
            flex-shrink: 0;
        }
        /* Ranking */
        .ranking-section {
            padding: 36px 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .rank-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--surface);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .rank-table th {
            background: var(--surface-blue);
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .rank-table td {
            padding: 14px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
        }
        .rank-table tr:last-child td {
            border-bottom: none;
        }
        .rank-table tr:hover td {
            background: #FAFBFE;
        }
        .rank-name {
            font-weight: 600;
            color: var(--text);
        }
        .rank-pos {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 13px;
        }
        .rank-1 { background: #FEF3C7; color: #92400E; }
        .rank-2 { background: #E5E7EB; color: #374151; }
        .rank-3 { background: #FDE8D0; color: #9A3412; }
        .rank-other { background: var(--surface-blue); color: var(--text-secondary); }
        /* Resources */
        .resource-section {
            padding: 36px 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .resource-link-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: all var(--transition);
            height: 100%;
            text-decoration: none;
        }
        .resource-link-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .resource-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .resource-link-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
        }
        .resource-link-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.5;
        }
        /* FAQ */
        .faq-section {
            padding: 36px 0 48px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .accordion {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .accordion-item:hover {
            border-color: var(--accent);
        }
        .accordion-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            background: var(--surface);
        }
        .accordion-title:hover {
            color: var(--primary);
        }
        .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .accordion-content {
            display: none;
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            background: var(--surface);
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }
        /* Footer */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
        }
        .logo-icon-sm {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .navbar {
                gap: 12px;
            }
            .nav-links li a {
                padding: 6px 10px;
                font-size: 14px;
            }
            .search-box input {
                width: 110px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .feature-img {
                flex: 0 0 40%;
                min-height: 240px;
            }
        }
        @media (max-width: 768px) {
            .navbar {
                flex-wrap: wrap;
                justify-content: space-between;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 2px;
                padding: 10px 0;
                background: #fff;
                border-top: 1px solid var(--border);
                margin-top: 8px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                display: block;
                padding: 10px 14px;
                font-size: 15px;
            }
            .header-actions {
                margin-left: auto;
            }
            .search-box {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .section {
                padding: 32px 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .page-title-section {
                padding: 28px 0 18px;
            }
            .page-title-section h1 {
                font-size: 26px;
            }
            .feature-card {
                flex-direction: column;
            }
            .feature-img {
                flex: none;
                width: 100%;
                min-height: 200px;
                max-height: 240px;
            }
            .feature-body {
                padding: 20px;
            }
            .event-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .event-date {
                flex: none;
                min-width: 70px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-lg {
                padding: 13px 30px;
                font-size: 15px;
            }
            .page-title-section h1 {
                font-size: 22px;
            }
            .list-card-img {
                height: 150px;
            }
            .rank-table th,
            .rank-table td {
                padding: 10px 10px;
                font-size: 12px;
            }
            .accordion-title {
                font-size: 14px;
                padding: 14px 16px;
            }
            .accordion-content {
                padding: 0 16px 16px;
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #3B82F6;
            --primary-deep: #1E40AF;
            --accent: #06B6D4;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --surface-blue: #EFF4FB;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E8EDF5;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-tag: 6px;
            --radius-input: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
            --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
            --transition: 0.2s ease;
            --section-pad: 56px 0;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input {
            font-family: var(--font-family);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: var(--section-pad);
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .section:nth-of-type(even) {
            background: var(--bg);
        }

        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .text-left {
            text-align: left;
        }

        .row {
            max-width: 1200px;
        }

        .card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
        }

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

        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }

        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }

        .card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }

        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.65;
        }

        .card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .card .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: #2563EB;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }

        .btn-deep {
            background: var(--primary-deep);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
        }

        .btn-deep:hover,
        .btn-deep:focus {
            background: #172554;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 64, 175, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            border-color: var(--primary-deep);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }

        .tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.3px;
            transition: all var(--transition);
        }

        .tag-accent {
            background: rgba(6, 182, 212, 0.12);
            color: #0891b2;
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .page-header {
            background: linear-gradient(135deg, #EFF4FB 0%, #F8FAFC 100%);
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--text-muted);
            font-size: 12px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .current {
            color: var(--primary-deep);
            font-weight: 500;
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.5px;
        }

        .page-header .h1-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.65;
        }

        .focus-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

        .focus-card .focus-img {
            position: relative;
            min-height: 320px;
            overflow: hidden;
            border-radius: var(--radius-card) 0 0 var(--radius-card);
        }

        .focus-card .focus-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card) 0 0 var(--radius-card);
            transition: transform var(--transition);
        }

        .focus-card:hover .focus-img img {
            transform: scale(1.03);
        }

        .focus-card .focus-body {
            padding: 32px 28px 32px 8px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .focus-card .focus-body .tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .focus-card .focus-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .focus-card .focus-body p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.7;
        }

        .list-card {
            display: flex;
            gap: 20px;
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 18px;
            transition: all var(--transition);
            height: 100%;
            flex-direction: column;
        }

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

        .list-card .list-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .list-card .list-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 8px;
            transition: transform var(--transition);
        }

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

        .list-card .list-body {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .list-card .list-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
            flex-wrap: wrap;
        }

        .list-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .list-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
            flex: 1;
        }

        .list-card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            transition: all var(--transition);
        }

        .list-card .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        .rank-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: var(--surface);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .rank-table thead {
            background: var(--surface-blue);
        }

        .rank-table th {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-deep);
            text-align: left;
            padding: 14px 18px;
            letter-spacing: 0.3px;
            border-bottom: 1px solid var(--border);
        }

        .rank-table td {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 14px 18px;
            border-bottom: 1px solid var(--border);
        }

        .rank-table tbody tr {
            transition: all var(--transition);
        }

        .rank-table tbody tr:hover {
            background: #F8FAFC;
        }

        .rank-table tbody tr:last-child td {
            border-bottom: none;
        }

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-weight: 600;
            font-size: 13px;
        }

        .rank-badge.top1 {
            background: #FFD700;
            color: #7C6A00;
        }

        .rank-badge.top2 {
            background: #E5E7EB;
            color: #4B5563;
        }

        .rank-badge.top3 {
            background: #F4A460;
            color: #7C4A00;
        }

        .interview-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

        .interview-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
        }

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

        .interview-card .interviewer {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .interview-card .interviewer-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .interview-card .interviewer-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
        }

        .interview-card .interviewer-info span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .interview-card .quote {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            position: relative;
            padding-left: 16px;
            border-left: 3px solid var(--accent);
        }

        .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 16px;
        }

        .resource-list li {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 18px 20px;
            transition: all var(--transition);
        }

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

        .resource-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
        }

        .resource-list a:hover {
            color: var(--primary);
        }

        .resource-list a i {
            color: var(--primary);
            font-size: 16px;
        }

        .accordion {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .accordion-item {
            border-bottom: 1px solid var(--border);
        }

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

        .accordion-title {
            display: block;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: var(--surface);
            cursor: pointer;
            transition: all var(--transition);
            position: relative;
            border: none;
            text-align: left;
            width: 100%;
            line-height: 1.5;
            text-decoration: none;
        }

        .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 14px;
        }

        .accordion-title[aria-expanded="true"]::after {
            transform: translateY(-50%) rotate(180deg);
            color: var(--primary);
        }

        .accordion-title:hover,
        .accordion-title:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            outline: none;
        }

        .accordion-content {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(30, 64, 175, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
            flex-wrap: wrap;
            position: relative;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            text-decoration: none;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-links li a {
            display: block;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            text-decoration: none;
            letter-spacing: 0.2px;
        }

        .nav-links li a:hover,
        .nav-links li a:focus {
            color: var(--primary);
            background: var(--surface-blue);
        }

        .nav-links li a.active {
            color: var(--primary);
            background: var(--surface-blue);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 6px 14px;
            gap: 8px;
            transition: all var(--transition);
            min-width: 220px;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: var(--surface-blue);
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 12px 0 0;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.3px;
        }

        .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition);
            text-decoration: none;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
            gap: 12px;
        }

        .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition);
        }

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

        .section-divider {
            border: none;
            height: 1px;
            background: var(--border);
            margin: 0;
        }

        @media screen and (max-width: 1024px) {
            .section {
                padding: 40px 0;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .page-header h1 {
                font-size: 30px;
            }

            .focus-card {
                grid-template-columns: 1fr;
            }

            .focus-card .focus-img {
                min-height: 240px;
                border-radius: var(--radius-card) var(--radius-card) 0 0;
            }

            .focus-card .focus-img img {
                border-radius: var(--radius-card) var(--radius-card) 0 0;
            }

            .focus-card .focus-body {
                padding: 20px 24px 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .header-actions .search-box {
                min-width: 160px;
            }
        }

        @media screen and (max-width: 768px) {
            .navbar {
                gap: 12px;
            }

            .hamburger {
                display: flex;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                border: 1px solid var(--border);
                border-radius: 0 0 12px 12px;
                box-shadow: var(--shadow-lg);
                gap: 2px;
                z-index: 99;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li a {
                padding: 12px 16px;
                border-radius: 8px;
                font-size: 16px;
            }

            .header-actions {
                gap: 8px;
            }

            .header-actions .search-box {
                min-width: auto;
                padding: 6px 10px;
            }

            .header-actions .search-box input {
                width: 100px;
            }

            .section {
                padding: 32px 0;
            }

            .section-header {
                margin-bottom: 24px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .page-header {
                padding: 28px 0 24px;
            }

            .page-header h1 {
                font-size: 26px;
            }

            .focus-card {
                gap: 0;
            }

            .focus-card .focus-img {
                min-height: 200px;
            }

            .list-card {
                flex-direction: column;
            }

            .interview-grid {
                grid-template-columns: 1fr;
            }

            .resource-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .rank-table th,
            .rank-table td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        @media screen and (max-width: 520px) {
            .container,
            .container-wide {
                padding: 0 14px;
            }

            .logo {
                font-size: 18px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .header-actions .search-box {
                padding: 4px 8px;
            }

            .header-actions .search-box input {
                width: 70px;
                font-size: 13px;
            }

            .btn-sm {
                padding: 6px 14px;
                font-size: 12px;
            }

            .section-header h2 {
                font-size: 20px;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .page-header .h1-sub {
                font-size: 14px;
            }

            .card {
                padding: 18px;
            }

            .focus-card .focus-body {
                padding: 16px 18px 20px;
            }

            .focus-card .focus-body h3 {
                font-size: 18px;
            }

            .list-card {
                padding: 14px;
            }

            .breadcrumb {
                font-size: 13px;
                gap: 6px;
            }

            .accordion-title {
                padding: 14px 16px;
                font-size: 14px;
            }

            .accordion-title::after {
                right: 16px;
            }

            .accordion-content {
                padding: 0 16px 14px;
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
        --primary: #3B82F6;
        --primary-deep: #1E40AF;
        --accent: #06B6D4;
        --bg: #F8FAFC;
        --surface: #FFFFFF;
        --surface-blue: #EFF4FB;
        --text: #0F172A;
        --text-secondary: #475569;
        --text-muted: #94A3B8;
        --border: #E8EDF5;
        --radius-card: 12px;
        --radius-btn: 999px;
        --radius-tag: 6px;
        --radius-input: 8px;
        --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
        --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
        --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
        --transition: 0.2s ease;
        --section-pad: 56px 0;
        --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }

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

    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        margin: 0;
        padding: 0;
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }

    a:hover,
    a:focus {
        color: var(--primary-deep);
        outline: none;
    }

    a:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
        border-radius: 4px;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: var(--radius-card);
    }

    button,
    input {
        font-family: var(--font-family);
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .container-wide {
        max-width: 1320px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .section {
        padding: var(--section-pad);
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        position: relative;
    }

    .section-alt {
        background: var(--bg);
    }

    .section-header {
        text-align: center;
        margin-bottom: 36px;
    }

    .section-header h2 {
        font-size: 28px;
        font-weight: 600;
        color: var(--text);
        margin: 0 0 12px;
        letter-spacing: 0.5px;
    }

    .section-header p {
        font-size: 16px;
        color: var(--text-secondary);
        max-width: 720px;
        margin: 0 auto;
        line-height: 1.7;
    }

    .section-tag {
        display: inline-block;
        background: var(--surface-blue);
        color: var(--primary-deep);
        font-size: 13px;
        font-weight: 500;
        padding: 4px 14px;
        border-radius: var(--radius-tag);
        margin-bottom: 10px;
        letter-spacing: 0.5px;
    }

    .card {
        background: var(--surface);
        border-radius: var(--radius-card);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        padding: 24px;
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
        height: 100%;
    }

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

    .card .card-icon {
        width: 52px;
        height: 52px;
        border-radius: 12px;
        background: var(--surface-blue);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        color: var(--primary);
        margin-bottom: 16px;
        transition: all var(--transition);
    }

    .card:hover .card-icon {
        background: var(--primary);
        color: #fff;
    }

    .card h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text);
        margin: 0 0 8px;
        letter-spacing: 0.3px;
    }

    .card p {
        font-size: 15px;
        color: var(--text-secondary);
        margin: 0 0 12px;
        line-height: 1.65;
    }

    .card .card-link {
        font-size: 14px;
        font-weight: 500;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: all var(--transition);
    }

    .card .card-link:hover {
        color: var(--primary-deep);
        gap: 10px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 15px;
        font-weight: 500;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        letter-spacing: 0.3px;
        text-decoration: none;
        line-height: 1.4;
    }

    .btn:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
    }

    .btn-primary:hover,
    .btn-primary:focus {
        background: #2563EB;
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    }

    .btn-deep {
        background: var(--primary-deep);
        color: #fff;
        box-shadow: 0 4px 16px rgba(30, 64, 175, 0.25);
    }

    .btn-deep:hover,
    .btn-deep:focus {
        background: #1E3A8A;
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(30, 64, 175, 0.35);
    }

    .btn-outline {
        background: var(--surface);
        color: var(--primary);
        border: 1px solid var(--primary);
    }

    .btn-outline:hover,
    .btn-outline:focus {
        background: var(--surface-blue);
        color: var(--primary-deep);
        transform: translateY(-2px);
    }

    .btn-sm {
        padding: 8px 18px;
        font-size: 14px;
    }

    /* Header / Navigation */
    .site-header {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        position: relative;
        z-index: 100;
    }

    .navbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        padding: 14px 0;
        background: transparent;
    }

    .logo {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 22px;
        font-weight: 700;
        color: var(--text);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }

    .logo:hover,
    .logo:focus {
        color: var(--primary-deep);
    }

    .logo-icon {
        width: 34px;
        height: 34px;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
        font-size: 18px;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 18px;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: wrap;
    }

    .nav-links li a {
        display: inline-block;
        padding: 6px 4px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        border-bottom: 2px solid transparent;
        transition: all var(--transition);
        white-space: nowrap;
    }

    .nav-links li a:hover,
    .nav-links li a:focus {
        color: var(--primary);
        border-bottom-color: var(--primary);
    }

    .nav-links li a.active {
        color: var(--primary);
        border-bottom-color: var(--primary);
        font-weight: 600;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .search-box {
        position: relative;
        display: flex;
        align-items: center;
    }

    .search-box input {
        width: 180px;
        padding: 8px 12px 8px 36px;
        border-radius: var(--radius-input);
        border: 1px solid var(--border);
        background: var(--bg);
        color: var(--text);
        font-size: 14px;
        transition: all var(--transition);
    }

    .search-box input:focus {
        outline: none;
        border-color: var(--primary);
        background: var(--surface);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
        width: 220px;
    }

    .search-icon {
        position: absolute;
        left: 12px;
        color: var(--text-muted);
        font-size: 14px;
        pointer-events: none;
    }

    .hamburger {
        display: none;
        flex-direction: column;
        justify-content: space-between;
        width: 26px;
        height: 20px;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 0;
    }

    .hamburger span {
        display: block;
        width: 26px;
        height: 2px;
        background: var(--text);
        border-radius: 2px;
        transition: all var(--transition);
    }

    .hamburger[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .hamburger[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }
    .hamburger[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* Breadcrumb */
    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 6px;
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 12px;
    }

    .breadcrumb a {
        color: var(--primary);
    }

    .breadcrumb a:hover {
        color: var(--primary-deep);
    }

    .breadcrumb .separator {
        color: var(--text-muted);
        margin: 0 4px;
    }

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

    /* Page banner (non-Hero) */
    .page-banner {
        background: linear-gradient(135deg, rgba(239, 244, 251, 0.96), rgba(255, 255, 255, 0.94)), url('/assets/images/ac2edc6ed611245e.webp') center/cover;
        padding: 64px 0 48px;
        border-bottom: 1px solid var(--border);
        position: relative;
    }

    .page-banner h1 {
        font-size: 38px;
        font-weight: 700;
        color: var(--text);
        margin: 0 0 8px;
        letter-spacing: 0.5px;
    }

    .page-banner .banner-desc {
        font-size: 17px;
        color: var(--text-secondary);
        max-width: 760px;
        margin: 0;
        line-height: 1.7;
    }

    /* List card (compact horizontal) */
    .list-card {
        display: flex;
        align-items: stretch;
        gap: 20px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        padding: 0;
        overflow: hidden;
        transition: all var(--transition);
        height: 100%;
    }

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

    .list-card-img {
        flex: 0 0 260px;
        min-height: 160px;
        overflow: hidden;
        border-radius: var(--radius-card) 0 0 var(--radius-card);
        background: var(--surface-blue);
    }

    .list-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: var(--radius-card) 0 0 var(--radius-card);
    }

    .list-card-body {
        flex: 1;
        padding: 18px 20px 18px 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .list-card-body .meta {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 6px;
    }

    .list-card-body h3 {
        font-size: 19px;
        font-weight: 600;
        margin: 0 0 8px;
        color: var(--text);
    }

    .list-card-body h3 a {
        color: var(--text);
    }

    .list-card-body h3 a:hover {
        color: var(--primary-deep);
    }

    .list-card-body p {
        font-size: 15px;
        color: var(--text-secondary);
        margin: 0 0 10px;
        line-height: 1.6;
    }

    .list-card-body .card-link {
        font-size: 14px;
        font-weight: 500;
    }

    /* Featured card */
    .featured-card {
        display: grid;
        grid-template-columns: 1fr 1fr;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-md);
        overflow: hidden;
        transition: all var(--transition);
    }

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

    .featured-img {
        position: relative;
        min-height: 320px;
        background: var(--surface-blue);
        border-radius: 0;
    }

    .featured-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 0;
    }

    .featured-body {
        padding: 32px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .featured-body h2 {
        font-size: 26px;
        font-weight: 700;
        margin: 0 0 12px;
        color: var(--text);
        line-height: 1.3;
    }

    .featured-body h2 a {
        color: var(--text);
    }

    .featured-body h2 a:hover {
        color: var(--primary-deep);
    }

    .featured-body p {
        font-size: 16px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0 0 18px;
    }

    .featured-body .meta {
        font-size: 13px;
        color: var(--text-muted);
    }

    /* Rank list */
    .rank-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
        margin: 0;
        padding: 0;
        list-style: none;
    }

    .rank-item {
        display: flex;
        align-items: center;
        gap: 16px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 16px 20px;
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
    }

    .rank-item:hover {
        box-shadow: var(--shadow-md);
        transform: translateX(4px);
        border-color: var(--accent);
    }

    .rank-number {
        width: 38px;
        height: 38px;
        flex-shrink: 0;
        border-radius: 10px;
        background: var(--surface-blue);
        color: var(--primary-deep);
        font-size: 18px;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .rank-info {
        flex: 1;
    }

    .rank-info h3 {
        font-size: 17px;
        font-weight: 600;
        margin: 0 0 4px;
        color: var(--text);
    }

    .rank-info p {
        font-size: 14px;
        color: var(--text-secondary);
        margin: 0;
    }

    .rank-score {
        flex-shrink: 0;
        font-size: 18px;
        font-weight: 700;
        color: var(--primary);
    }

    /* Compare cards */
    .compare-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        padding: 24px;
        height: 100%;
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
    }

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

    .compare-card .compare-tag {
        display: inline-block;
        background: var(--primary);
        color: #fff;
        font-size: 13px;
        font-weight: 600;
        padding: 4px 14px;
        border-radius: var(--radius-tag);
        margin-bottom: 12px;
    }

    .compare-card h3 {
        font-size: 20px;
        font-weight: 700;
        margin: 0 0 8px;
        color: var(--text);
    }

    .compare-card .param {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.6;
        margin: 0;
    }

    .compare-card .param strong {
        color: var(--text);
        font-weight: 600;
    }

    /* Article resource */
    .resource-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
        margin: 0;
        padding: 0;
        list-style: none;
    }

    .resource-list li {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 12px 16px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
    }

    .resource-list li:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-md);
        transform: translateX(4px);
    }

    .resource-list .resource-icon {
        width: 36px;
        height: 36px;
        flex-shrink: 0;
        border-radius: 8px;
        background: var(--surface-blue);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .resource-list a {
        font-size: 16px;
        font-weight: 500;
        color: var(--text);
    }

    .resource-list a:hover {
        color: var(--primary-deep);
    }

    /* FAQ */
    .faq-accordion .accordion-item {
        margin-bottom: 10px;
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        background: var(--surface);
    }

    .faq-accordion .accordion-title {
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
        padding: 16px 20px;
        background: var(--surface);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        transition: all var(--transition);
        border: none;
        width: 100%;
        text-align: left;
        line-height: 1.5;
    }

    .faq-accordion .accordion-title:hover,
    .faq-accordion .accordion-title:focus {
        background: var(--surface-blue);
        outline: none;
    }

    .faq-accordion .accordion-title .fa-chevron-down {
        color: var(--primary);
        transition: transform 0.2s ease;
        flex-shrink: 0;
    }

    .faq-accordion .accordion-title[aria-expanded="true"] .fa-chevron-down {
        transform: rotate(180deg);
    }

    .faq-accordion .accordion-content {
        display: none;
        padding: 0 20px 18px;
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    .faq-accordion .accordion-content.is-active {
        display: block;
    }

    /* Footer */
    .site-footer {
        background: var(--surface);
        border-top: 1px solid var(--border);
        padding: 48px 0 20px;
        color: var(--text-secondary);
    }

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

    .footer-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 20px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 12px;
    }

    .logo-icon-sm {
        width: 28px;
        height: 28px;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 6px;
        font-size: 14px;
    }

    .footer-brand p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0;
    }

    .footer-col h4 {
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
        margin: 0 0 14px;
    }

    .footer-col ul {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .footer-col ul li a {
        font-size: 14px;
        color: var(--text-secondary);
        transition: color var(--transition);
    }

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

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        padding-top: 20px;
        border-top: 1px solid var(--border);
        flex-wrap: wrap;
    }

    .copyright {
        font-size: 13px;
        color: var(--text-muted);
    }

    .footer-links {
        display: flex;
        gap: 18px;
        flex-wrap: wrap;
    }

    .footer-links a {
        font-size: 13px;
        color: var(--text-secondary);
    }

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

    /* Responsive */
    @media (max-width: 1024px) {
        .navbar {
            gap: 16px;
        }
        .nav-links {
            gap: 12px;
        }
        .search-box input {
            width: 140px;
        }
        .featured-card {
            grid-template-columns: 1fr;
        }
        .featured-img {
            min-height: 240px;
        }
        .list-card-img {
            flex: 0 0 220px;
        }
    }

    @media (max-width: 768px) {
        .hamburger {
            display: flex;
        }
        .nav-links {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 12px 20px 20px;
            flex-direction: column;
            align-items: stretch;
            gap: 6px;
        }
        .nav-links.open {
            display: flex;
        }
        .nav-links li a {
            display: block;
            padding: 10px 4px;
            font-size: 16px;
        }
        .header-actions {
            gap: 8px;
        }
        .search-box {
            display: none;
        }
        .page-banner {
            padding: 40px 0 32px;
        }
        .page-banner h1 {
            font-size: 30px;
        }
        .section {
            padding: 40px 0;
        }
        .list-card {
            flex-direction: column;
        }
        .list-card-img {
            flex: 1 1 auto;
            min-height: 180px;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .list-card-img img {
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .list-card-body {
            padding: 16px 20px 20px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 14px;
        }
        .page-banner h1 {
            font-size: 26px;
        }
        .section-header h2 {
            font-size: 24px;
        }
        .btn {
            padding: 10px 22px;
            font-size: 14px;
        }
        .rank-item {
            padding: 14px;
            gap: 12px;
        }
        .rank-number {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }
        .compare-card {
            padding: 18px;
        }
    }

/* roulang page: category5 */
:root {
            --primary: #3B82F6;
            --primary-deep: #1E40AF;
            --accent: #06B6D4;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --surface-blue: #EFF4FB;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E8EDF5;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-tag: 6px;
            --radius-input: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
            --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
            --transition: 0.2s ease;
            --section-pad: 56px 0;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input {
            font-family: var(--font-family);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad);
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .section:nth-of-type(even) {
            background: var(--bg);
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .text-left {
            text-align: left;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }
        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.65;
        }
        .card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .card .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #2563EB;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        .btn-deep {
            background: var(--primary-deep);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
        }
        .btn-deep:hover,
        .btn-deep:focus {
            background: #1e40af;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 64, 175, 0.4);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
            box-shadow: none;
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.3px;
        }
        .tag-accent {
            background: rgba(6, 182, 212, 0.1);
            color: #0891B2;
        }
        .tag-live {
            background: rgba(239, 68, 68, 0.1);
            color: #DC2626;
        }
        .tag-soon {
            background: rgba(245, 158, 11, 0.1);
            color: #B45309;
        }
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(30, 64, 175, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px;
        }
        .navbar {
            display: flex;
            align-items: center;
            width: 100%;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary-deep);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 24px;
            flex-wrap: wrap;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 4px 0;
            display: inline-block;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger:hover span {
            background: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 0 12px;
            height: 38px;
            width: 200px;
            transition: border-color var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }
        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            outline: none;
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .breadcrumb-section {
            padding: 24px 0 8px;
            background: var(--bg);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover,
        .breadcrumb a:focus {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--primary-deep);
            font-weight: 500;
        }
        .category-hero {
            padding: 24px 0 32px;
            background: var(--bg);
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.5px;
        }
        .category-hero .subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.7;
            margin: 0;
        }
        .focus-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 0;
            transition: all var(--transition);
            height: 100%;
        }
        .focus-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .focus-card .focus-img {
            position: relative;
            min-height: 280px;
            height: 100%;
            overflow: hidden;
        }
        .focus-card .focus-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px 0 0 12px;
        }
        .focus-card .focus-img .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: #DC2626;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-btn);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
        }
        .focus-card .focus-body {
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .focus-card .focus-body .tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .focus-card .focus-body h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.3px;
        }
        .focus-card .focus-body p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 20px;
            line-height: 1.7;
        }
        .list-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition);
            height: 100%;
        }
        .list-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .list-card .list-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .list-card .list-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px 12px 0 0;
        }
        .list-card .list-img .status {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(15, 23, 42, 0.8);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-btn);
            backdrop-filter: blur(4px);
        }
        .list-card .list-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .list-card .list-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }
        .list-card .list-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.6;
            flex: 1;
        }
        .list-card .list-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .list-card .list-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .list-card .list-meta i {
            font-size: 13px;
        }
        .schedule-table {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .schedule-table .schedule-row {
            display: grid;
            grid-template-columns: 1.2fr 2fr 1.5fr 1fr;
            align-items: center;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
            gap: 12px;
        }
        .schedule-table .schedule-row:last-child {
            border-bottom: none;
        }
        .schedule-table .schedule-row:hover {
            background: var(--surface-blue);
        }
        .schedule-table .schedule-header {
            background: var(--surface-blue);
            font-weight: 600;
            color: var(--primary-deep);
            font-size: 14px;
            letter-spacing: 0.3px;
        }
        .schedule-table .schedule-row .date {
            font-weight: 600;
            color: var(--text);
        }
        .schedule-table .schedule-row .match {
            color: var(--text-secondary);
        }
        .schedule-table .schedule-row .streamer {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .schedule-table .schedule-row .streamer img {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            object-fit: cover;
        }
        .schedule-table .schedule-row .status {
            justify-self: end;
        }
        .anchor-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }
        .anchor-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .anchor-card .anchor-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            overflow: hidden;
            margin-bottom: 14px;
            border: 3px solid var(--surface-blue);
        }
        .anchor-card .anchor-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
        }
        .anchor-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
        }
        .anchor-card .role {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 8px;
        }
        .anchor-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.6;
        }
        .resource-list {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .resource-list .resource-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .resource-list .resource-item:last-child {
            border-bottom: none;
        }
        .resource-list .resource-item:hover {
            background: var(--surface-blue);
        }
        .resource-list .resource-item i {
            color: var(--primary);
            font-size: 16px;
        }
        .resource-list .resource-item .resource-info {
            flex: 1;
        }
        .resource-list .resource-item .resource-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
        }
        .resource-list .resource-item .resource-info p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }
        .faq-section {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px;
        }
        .faq-section .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .faq-section .faq-item:last-child {
            border-bottom: none;
        }
        .faq-section .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text);
            font-size: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            padding: 8px 0;
            transition: color var(--transition);
            gap: 12px;
        }
        .faq-section .faq-question:hover {
            color: var(--primary);
        }
        .faq-section .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-section .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-section .faq-answer {
            display: none;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            padding-top: 6px;
        }
        .faq-section .faq-answer.show {
            display: block;
        }
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-logo .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-links a:hover,
        .footer-links a:focus {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .focus-card {
                grid-template-columns: 1fr;
            }
            .focus-card .focus-img img {
                border-radius: 12px 12px 0 0;
            }
        }
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                align-items: stretch;
            }
            .hamburger {
                display: flex;
                align-self: flex-end;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                gap: 0;
                width: 100%;
                background: #fff;
                border-radius: 0 0 12px 12px;
                box-shadow: var(--shadow-md);
                overflow: hidden;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li {
                width: 100%;
                border-bottom: 1px solid var(--border);
            }
            .nav-links li:last-child {
                border-bottom: none;
            }
            .nav-links a {
                padding: 14px 16px;
                width: 100%;
                display: block;
            }
            .nav-links a.active::after {
                display: none;
            }
            .header-actions {
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .search-box {
                width: 100%;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .schedule-table .schedule-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
                padding: 12px 16px;
            }
            .schedule-table .schedule-row .status {
                justify-self: start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section {
                padding: 32px 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .schedule-table .schedule-row {
                grid-template-columns: 1fr;
            }
            .logo {
                font-size: 18px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .focus-card .focus-body {
                padding: 18px 20px;
            }
            .focus-card .focus-body h2 {
                font-size: 20px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #3B82F6;
            --primary-deep: #1E40AF;
            --accent: #06B6D4;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --surface-blue: #EFF4FB;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E8EDF5;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-tag: 6px;
            --radius-input: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 64, 175, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 64, 175, 0.08);
            --shadow-lg: 0 16px 48px rgba(30, 64, 175, 0.14);
            --transition: 0.2s ease;
            --section-pad: 56px 0;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input {
            font-family: var(--font-family);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad);
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .section:nth-of-type(even) {
            background: var(--bg);
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: var(--surface-blue);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .text-left {
            text-align: left;
        }
        .row {
            max-width: 1200px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--surface-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }
        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.65;
        }
        .card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .card .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #2563EB;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        .btn-deep {
            background: var(--primary-deep);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
        }
        .btn-deep:hover,
        .btn-deep:focus {
            background: #1E3A8A;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 64, 175, 0.4);
        }
        .btn-outline {
            background: var(--surface);
            color: var(--primary);
            border: 1px solid var(--primary);
            box-shadow: none;
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--surface-blue);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
        }
        .badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .badge-blue {
            background: #EFF6FF;
            color: #2563EB;
        }
        .badge-cyan {
            background: #ECFEFF;
            color: #0891B2;
        }
        .badge-slate {
            background: #F1F5F9;
            color: #475569;
        }
        .badge-green {
            background: #F0FDF4;
            color: #16A34A;
        }
        .badge-orange {
            background: #FFF7ED;
            color: #EA580C;
        }
        .badge-red {
            background: #FEF2F2;
            color: #DC2626;
        }
        .list-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 18px;
            transition: all var(--transition);
            display: flex;
            gap: 18px;
            align-items: flex-start;
            margin-bottom: 18px;
        }
        .list-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--accent);
        }
        .list-card img {
            width: 170px;
            height: 100px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .list-card-content {
            flex: 1;
        }
        .list-card-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
            line-height: 1.5;
        }
        .list-card-content p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 8px;
            line-height: 1.65;
        }
        .list-card-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-subpage {
            background: linear-gradient(135deg, #EFF4FB 0%, #F8FAFC 45%, #E0F2FE 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .hero-subpage::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, rgba(255,255,255,0) 70%);
            pointer-events: none;
        }
        .hero-subpage h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
            letter-spacing: 0.8px;
            position: relative;
        }
        .hero-subpage p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 780px;
            margin: 0;
            line-height: 1.7;
            position: relative;
        }
        .breadcrumb-nav {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            position: relative;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .current {
            color: var(--primary-deep);
            font-weight: 500;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
            margin-bottom: 32px;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .feature-card img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            border-radius: 0;
        }
        .feature-card-body {
            padding: 24px 28px;
        }
        .feature-card-body h2 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .feature-card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.7;
        }
        .topic-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .topic-item {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            transition: all var(--transition);
            height: 100%;
        }
        .topic-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--accent);
        }
        .topic-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.5;
        }
        .topic-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 10px;
            line-height: 1.6;
        }
        .topic-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 500;
            margin-right: 6px;
            margin-bottom: 6px;
        }
        .announcement-list {
            display: grid;
            gap: 14px;
        }
        .announcement-item {
            background: var(--surface);
            border-radius: 10px;
            border-left: 4px solid var(--primary);
            border-top: 1px solid var(--border);
            border-right: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 16px 20px;
            transition: all var(--transition);
        }
        .announcement-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(2px);
        }
        .announcement-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
        }
        .announcement-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }
        .resource-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 14px;
        }
        .resource-link {
            background: var(--surface);
            border-radius: 10px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 16px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
        }
        .resource-link:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .resource-link i {
            color: var(--primary);
            font-size: 18px;
        }
        .accordion-item {
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .accordion-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .accordion-title {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: all var(--transition);
            line-height: 1.5;
        }
        .accordion-title:hover {
            color: var(--primary-deep);
            background: var(--surface-blue);
        }
        .accordion-title i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .accordion-item.active .accordion-title i {
            transform: rotate(180deg);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .accordion-content-inner {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(30, 64, 175, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            padding: 14px 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.8px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .logo:hover {
            color: var(--primary-deep);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 6px;
            flex-direction: column;
            gap: 5px;
            align-items: center;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-links a:hover {
            color: var(--primary-deep);
            background: var(--surface-blue);
        }
        .nav-links a.active {
            color: var(--primary-deep);
            background: var(--surface-blue);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            width: 170px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
        }
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 56px 0 0;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .logo-icon-sm {
            width: 30px;
            height: 30px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--primary-deep);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-deep);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section {
                padding: 40px 0;
            }
            .hero-subpage {
                padding: 36px 0 32px;
            }
            .hero-subpage h1 {
                font-size: 28px;
            }
            .nav-links a {
                padding: 7px 10px;
                font-size: 14px;
            }
            .search-box input {
                width: 120px;
            }
        }
        @media (max-width: 768px) {
            .navbar {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 0;
                padding: 12px 0;
                border-top: 1px solid var(--border);
                margin-top: 10px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 10px 6px;
                border-bottom: 1px solid var(--border);
                border-radius: 0;
            }
            .header-actions {
                display: none;
            }
            .list-card {
                flex-direction: column;
            }
            .list-card img {
                width: 100%;
                height: 180px;
            }
            .topic-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .feature-card img {
                height: 200px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .hero-subpage h1 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .container-wide {
                padding: 0 14px;
            }
            .section {
                padding: 32px 0;
            }
            .hero-subpage {
                padding: 28px 0 24px;
            }
            .hero-subpage h1 {
                font-size: 21px;
            }
            .feature-card-body {
                padding: 18px;
            }
            .feature-card-body h2 {
                font-size: 18px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .list-card {
                padding: 14px;
            }
            .list-card img {
                height: 140px;
            }
            .resource-links {
                grid-template-columns: 1fr;
            }
        }