/* roulang page: index */
:root {
            --primary: #ff6a00;
            --primary-dark: #e55a00;
            --primary-soft: rgba(255, 106, 0, 0.14);
            --secondary: #00c896;
            --secondary-dark: #00a87e;
            --bg-body: #0b0f19;
            --bg-card: #141b2d;
            --bg-card-hover: #1a2338;
            --bg-section: #101624;
            --text-light: #e8ecf4;
            --text-muted: #8a94a6;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 16px 50px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s ease;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }

        .container {
            max-width: 1240px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 25, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .custom-navbar {
            padding: 14px 0;
            min-height: 70px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--text-light);
            white-space: nowrap;
        }

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

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #ff9a3d);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(255, 106, 0, 0.35);
        }

        .main-nav-list {
            gap: 6px;
            margin-left: 30px;
        }

        .main-nav-list .nav-link {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
        }

        .main-nav-list .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.05);
        }

        .main-nav-list .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .main-nav-list .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }

        .nav-right {
            gap: 14px;
            margin-left: auto;
        }

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

        .search-box input {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            padding: 8px 38px 8px 16px;
            width: 200px;
            color: var(--text-light);
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .search-box input:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.12);
        }

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

        .search-box button {
            position: absolute;
            right: 4px;
            background: transparent;
            color: var(--text-muted);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .search-box button:hover {
            color: var(--primary);
            background: rgba(255, 106, 0, 0.1);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 9px 20px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(255, 106, 0, 0.35);
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 0, 0.4);
        }

        .custom-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 8px 10px;
            background: rgba(255, 255, 255, 0.05);
        }

        .custom-toggler .bar {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-light);
            margin: 4px 0;
            border-radius: 2px;
            transition: var(--transition);
        }

        .custom-toggler[aria-expanded="true"] .bar:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

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

        .custom-toggler[aria-expanded="true"] .bar:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .header-trends {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .header-trends .trend-label {
            color: var(--text-muted);
            font-weight: 500;
        }

        .header-trends a {
            padding: 3px 10px;
            border-radius: 15px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
        }

        .header-trends a:hover {
            background: rgba(255, 106, 0, 0.15);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            background: linear-gradient(90deg, rgba(11, 15, 25, 0.92) 0%, rgba(11, 15, 25, 0.6) 60%, rgba(11, 15, 25, 0.3) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 80px 0;
            overflow: hidden;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to bottom, transparent, var(--bg-body));
            pointer-events: none;
        }

        .hero-content {
            max-width: 620px;
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 106, 0, 0.15);
            border: 1px solid rgba(255, 106, 0, 0.25);
            color: #ff9a4d;
            font-size: 0.88rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 22px;
        }

        .hero-badge i {
            color: var(--primary);
        }

        .hero-content h1 {
            font-size: 3.1rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 10px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #fff 60%, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.45rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .hero-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 30px;
            line-height: 1.8;
            max-width: 480px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 13px 30px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 8px 25px rgba(255, 106, 0, 0.35);
        }

        .btn-hero-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 106, 0, 0.45);
        }

        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 28px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--primary);
            transform: translateY(-3px);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .hero-meta i {
            color: var(--secondary);
        }

        /* ===== Section ===== */
        section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-light);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-section);
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 106, 0, 0.3);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(255, 106, 0, 0.2), rgba(255, 106, 0, 0.05));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.1) rotate(-5deg);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Categories ===== */
        .categories-section {
            background: var(--bg-body);
        }

        .category-card {
            display: block;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 106, 0, 0.35);
        }

        .category-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .category-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-card:hover .category-img img {
            transform: scale(1.08);
        }

        .category-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 50%, rgba(11, 15, 25, 0.7));
        }

        .category-info {
            padding: 26px 24px;
            position: relative;
        }

        .category-badge {
            display: inline-flex;
            background: var(--primary);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .category-info h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .category-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
        }

        .category-card:hover .category-link {
            gap: 14px;
        }

        /* ===== Latest ===== */
        .latest-section {
            background: var(--bg-section);
            position: relative;
        }

        .latest-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
        }

        .latest-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .latest-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 26px 30px;
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .latest-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 106, 0, 0.25);
            transform: translateX(6px);
            box-shadow: var(--shadow-card);
        }

        .latest-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
        }

        .latest-cat {
            background: rgba(0, 200, 150, 0.18);
            color: var(--secondary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 15px;
        }

        .latest-date {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .latest-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .latest-title a {
            color: var(--text-light);
            transition: var(--transition);
        }

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

        .latest-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .latest-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

        .latest-more:hover {
            gap: 12px;
        }

        .empty-tips {
            text-align: center;
            color: var(--text-muted);
            font-size: 1rem;
            padding: 40px 0;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed rgba(255, 255, 255, 0.12);
        }

        /* ===== Stats ===== */
        .stats-section {
            background: linear-gradient(135deg, rgba(255, 106, 0, 0.08), rgba(0, 200, 150, 0.05)), var(--bg-body);
            padding: 70px 0;
        }

        .stat-card {
            text-align: center;
            padding: 30px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            height: 100%;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
            border-color: rgba(255, 106, 0, 0.3);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-num span {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .stat-label {
            font-size: 0.92rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== Featured ===== */
        .featured-section {
            background: var(--bg-body);
        }

        .featured-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

        .featured-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 106, 0, 0.3);
        }

        .featured-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .featured-card:hover .featured-img img {
            transform: scale(1.08);
        }

        .featured-body {
            padding: 22px 20px;
        }

        .featured-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 15px;
            margin-bottom: 12px;
        }

        .featured-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .featured-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 106, 0, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: transparent;
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-question i {
            color: var(--text-muted);
            transition: transform 0.3s ease;
            font-size: 0.9rem;
        }

        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-answer.show {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        .faq-answer p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(255, 106, 0, 0.95), rgba(255, 154, 61, 0.85)), url('/assets/images/backpic/back-3.png') center center / cover;
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-inner p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 30px;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
        }

        .btn-cta:hover {
            background: #f5f5f5;
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #080b12;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 0;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 0.85rem;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-title {
            color: var(--text-light);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            margin-top: 50px;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 0;
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .main-nav-list {
                margin-left: 0;
                padding: 15px 0;
                gap: 4px;
            }

            .main-nav-list .nav-link {
                padding: 10px 18px;
                border-radius: 8px;
            }

            .main-nav-list .nav-link.active::after {
                display: none;
            }

            .site-header .container {
                max-width: 100%;
            }

            .hero-section {
                min-height: 500px;
                padding: 60px 0;
            }

            .hero-content h1 {
                font-size: 2.4rem;
            }

            .hero-subtitle {
                font-size: 1.2rem;
            }

            .search-box {
                display: none !important;
            }

            .btn-nav-cta {
                display: none !important;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }

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

            .section-header h2 {
                font-size: 1.6rem;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .hero-subtitle {
                font-size: 1.05rem;
            }

            .hero-desc {
                font-size: 0.92rem;
            }

            .hero-buttons .btn-hero-primary,
            .hero-buttons .btn-hero-secondary {
                padding: 11px 24px;
                font-size: 0.92rem;
            }

            .stat-num {
                font-size: 1.6rem;
            }

            .featured-img {
                height: 160px;
            }

            .latest-item {
                padding: 20px;
            }

            .latest-title {
                font-size: 1rem;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-section {
                min-height: 440px;
                padding: 40px 0;
            }

            .hero-content h1 {
                font-size: 1.7rem;
            }

            .hero-subtitle {
                font-size: 0.98rem;
            }

            .hero-desc {
                font-size: 0.88rem;
            }

            .hero-meta {
                gap: 10px;
                font-size: 0.8rem;
                flex-direction: column;
                align-items: flex-start;
            }

            .brand-logo {
                font-size: 1.1rem;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.85rem;
            }

            .custom-toggler {
                padding: 6px 8px;
            }

            .category-img {
                height: 170px;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 15px 18px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-answer.show {
                padding: 0 18px 16px;
            }

            .btn-cta {
                padding: 12px 28px;
                font-size: 0.92rem;
            }

            .cta-inner h2 {
                font-size: 1.6rem;
            }

            .footer-bottom p {
                font-size: 0.78rem;
            }
        }

        @media (max-width: 400px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }

            .hero-badge {
                font-size: 0.78rem;
                padding: 4px 12px;
            }

            .stat-num {
                font-size: 1.3rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        ::selection {
            background: rgba(255, 106, 0, 0.3);
            color: #fff;
        }

/* roulang page: category1 */
:root {
            --primary: #0b1f3a;
            --primary-light: #162a43;
            --primary-dark: #060e1c;
            --accent: #ff6b35;
            --accent-hover: #e85d2a;
            --accent-rgb: 255, 107, 53;
            --blue: #0077b6;
            --bg-light: #f5f7fa;
            --bg-white: #ffffff;
            --text-main: #1c2b36;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, .06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, .08);
            --shadow-lg: 0 18px 44px rgba(0, 0, 0, .12);
            --transition: all .25s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            text-decoration: none;
        }

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

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
        }

        /* ========= Header / Nav ========= */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: var(--primary);
            box-shadow: 0 4px 24px rgba(0, 0, 0, .18);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .custom-navbar {
            padding: 14px 0;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: #fff !important;
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .brand-logo .brand-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), #ff9f43);
            border-radius: 10px;
            font-size: 1.05rem;
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 107, 53, .35);
        }

        .nav-right {
            gap: 14px;
            margin-left: auto;
        }

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

        .search-box input {
            width: 180px;
            height: 38px;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 20px;
            background: rgba(255, 255, 255, .1);
            color: #fff;
            padding: 0 40px 0 16px;
            font-size: .85rem;
            outline: none;
            transition: var(--transition);
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, .6);
        }

        .search-box input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, .16);
            box-shadow: 0 0 0 4px rgba(255, 107, 53, .15);
        }

        .search-box button {
            position: absolute;
            right: 4px;
            width: 30px;
            height: 30px;
            border: none;
            background: transparent;
            color: rgba(255, 255, 255, .75);
            border-radius: 50%;
            transition: var(--transition);
        }

        .search-box button:hover {
            color: var(--accent);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 38px;
            padding: 0 18px;
            background: linear-gradient(135deg, var(--accent), #ff9f43);
            color: #fff;
            border-radius: 20px;
            font-size: .85rem;
            font-weight: 600;
            border: none;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(255, 107, 53, .3);
            transition: var(--transition);
        }

        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, .4);
            color: #fff;
        }

        .custom-toggler {
            width: 44px;
            height: 40px;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 10px;
            background: transparent;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 8px 10px;
            transition: var(--transition);
        }

        .custom-toggler:hover {
            border-color: var(--accent);
        }

        .custom-toggler .bar {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }

        .main-nav-list {
            gap: 4px;
            margin-top: 14px;
        }

        .main-nav-list .nav-item .nav-link {
            color: rgba(255, 255, 255, .78);
            font-size: .95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 20px;
            transition: var(--transition);
            position: relative;
        }

        .main-nav-list .nav-item .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }

        .main-nav-list .nav-item .nav-link.active {
            color: #fff;
            background: rgba(255, 107, 53, .18);
            font-weight: 600;
        }

        .main-nav-list .nav-item .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .header-trends {
            align-items: center;
            gap: 8px;
            margin-top: 12px;
            padding-top: 10px;
            border-top: 1px solid rgba(255, 255, 255, .1);
            font-size: .83rem;
        }

        .header-trends .trend-label {
            color: rgba(255, 255, 255, .5);
            white-space: nowrap;
        }

        .header-trends a {
            color: rgba(255, 255, 255, .72);
            padding: 2px 10px;
            border-radius: 12px;
            background: rgba(255, 255, 255, .08);
            transition: var(--transition);
        }

        .header-trends a:hover {
            color: #fff;
            background: var(--accent);
        }

        @media (min-width: 992px) {
            .main-nav-list {
                margin-top: 0;
            }
            .header-trends {
                margin-top: 0;
                padding-top: 0;
                border-top: none;
            }
        }

        /* ========= Hero ========= */
        .category-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 80px 0 72px;
            color: #fff;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 14, 28, .95) 0%, rgba(11, 31, 58, .82) 55%, rgba(255, 107, 53, .25) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .65);
            margin-bottom: 18px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .65);
        }

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

        .hero-breadcrumb i {
            font-size: .7rem;
            color: rgba(255, 255, 255, .4);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 107, 53, .2);
            border: 1px solid rgba(255, 107, 53, .4);
            border-radius: 20px;
            font-size: .82rem;
            font-weight: 600;
            color: #ffd5c2;
            margin-bottom: 16px;
            backdrop-filter: blur(6px);
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .category-hero .hero-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, .8);
            max-width: 640px;
            margin-bottom: 28px;
        }

        .hero-search {
            display: flex;
            max-width: 520px;
            margin-bottom: 20px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .25);
            border-radius: 30px;
            padding: 5px 6px 5px 20px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .hero-search:focus-within {
            border-color: var(--accent);
            background: rgba(255, 255, 255, .18);
        }

        .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: .95rem;
        }

        .hero-search input::placeholder {
            color: rgba(255, 255, 255, .55);
        }

        .hero-search button {
            width: 42px;
            height: 38px;
            border: none;
            background: var(--accent);
            color: #fff;
            border-radius: 20px;
            font-size: .9rem;
            transition: var(--transition);
        }

        .hero-search button:hover {
            background: var(--accent-hover);
            transform: scale(1.04);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            font-size: .85rem;
        }

        .hero-tags span {
            color: rgba(255, 255, 255, .55);
        }

        .hero-tags a {
            color: rgba(255, 255, 255, .75);
            padding: 3px 12px;
            border-radius: 14px;
            background: rgba(255, 255, 255, .08);
            transition: var(--transition);
        }

        .hero-tags a:hover {
            background: var(--accent);
            color: #fff;
        }

        /* ========= Channel ========= */
        .channel-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
            position: sticky;
            top: 76px;
            z-index: 1020;
            box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
        }

        .channel-list {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .channel-list::-webkit-scrollbar {
            display: none;
        }

        .channel-item {
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: .88rem;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .channel-item:hover {
            color: var(--accent);
            background: rgba(255, 107, 53, .08);
        }

        .channel-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(11, 31, 58, .25);
        }

        /* ========= Section common ========= */
        .section {
            padding: 70px 0;
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 34px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-title {
            font-size: 1.65rem;
            font-weight: 700;
            margin: 0;
            color: var(--primary);
            position: relative;
            padding-left: 18px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 22px;
            background: var(--accent);
            border-radius: 3px;
        }

        .section-sub {
            color: var(--text-muted);
            font-size: .95rem;
            margin-top: 6px;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .88rem;
            color: var(--text-muted);
            padding: 6px 16px;
            border-radius: 18px;
            background: var(--bg-light);
            transition: var(--transition);
        }

        .section-more:hover {
            color: var(--accent);
            background: rgba(255, 107, 53, .1);
        }

        /* ========= Featured ========= */
        .featured-section {
            background: var(--bg-light);
        }

        .featured-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 340px;
            display: block;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            background: var(--primary);
        }

        .featured-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .featured-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .featured-card:hover img {
            transform: scale(1.05);
        }

        .featured-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(6, 14, 28, .92) 0%, rgba(6, 14, 28, .35) 55%, rgba(6, 14, 28, .1) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 26px;
        }

        .featured-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--accent);
            color: #fff;
            border-radius: 14px;
            font-size: .78rem;
            font-weight: 600;
            margin-bottom: 12px;
            width: fit-content;
            letter-spacing: .5px;
        }

        .featured-card h3 {
            color: #fff;
            font-size: 1.25rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .featured-card p {
            color: rgba(255, 255, 255, .78);
            font-size: .9rem;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-meta {
            color: rgba(255, 255, 255, .65);
            font-size: .82rem;
            display: flex;
            gap: 14px;
        }

        /* ========= News + Ranking ========= */
        .news-section {
            background: #fff;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 18px;
            background: var(--bg-light);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            align-items: flex-start;
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(255, 107, 53, .3);
        }

        .news-thumb-link {
            position: relative;
            flex-shrink: 0;
            width: 220px;
            height: 140px;
            border-radius: 10px;
            overflow: hidden;
            display: block;
        }

        .news-thumb-link img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-thumb-link:hover img {
            transform: scale(1.06);
        }

        .news-cat {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(255, 107, 53, .92);
            color: #fff;
            font-size: .72rem;
            padding: 3px 12px;
            border-radius: 12px;
            font-weight: 600;
        }

        .news-info {
            flex: 1;
        }

        .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .news-title a {
            color: var(--text-main);
        }

        .news-title a:hover {
            color: var(--accent);
        }

        .news-excerpt {
            color: var(--text-muted);
            font-size: .88rem;
            line-height: 1.65;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            gap: 16px;
            font-size: .8rem;
            color: var(--text-muted);
        }

        .news-meta i {
            margin-right: 4px;
            color: rgba(255, 107, 53, .8);
        }

        /* ========= Sidebar Ranking ========= */
        .sidebar {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 26px;
            border: 1px solid var(--border);
            position: sticky;
            top: 130px;
        }

        .sidebar-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 2px solid rgba(255, 107, 53, .2);
        }

        .sidebar-header i {
            color: var(--accent);
            font-size: 1.1rem;
        }

        .sidebar-header h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0;
            color: var(--primary);
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
            transition: var(--transition);
        }

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

        .ranking-item:hover {
            padding-left: 6px;
        }

        .ranking-num {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 107, 53, .1);
            color: var(--accent);
            font-weight: 700;
            font-size: .85rem;
            flex-shrink: 0;
        }

        .ranking-item:nth-child(1) .ranking-num {
            background: var(--accent);
            color: #fff;
        }

        .ranking-item:nth-child(2) .ranking-num {
            background: var(--primary);
            color: #fff;
        }

        .ranking-body {
            flex: 1;
            min-width: 0;
        }

        .ranking-title {
            font-size: .88rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 3px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-title:hover {
            color: var(--accent);
        }

        .ranking-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .76rem;
            color: var(--text-muted);
        }

        .ranking-tag {
            font-size: .7rem;
            padding: 1px 8px;
            border-radius: 8px;
            background: rgba(255, 107, 53, .1);
            color: var(--accent);
            font-weight: 600;
        }

        .ranking-views i {
            margin-right: 3px;
        }

        /* ========= Match Schedule ========= */
        .match-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .match-section::before {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 107, 53, .12);
        }

        .match-section .section-title {
            color: #fff;
        }

        .match-section .section-sub {
            color: rgba(255, 255, 255, .65);
        }

        .match-section .section-more {
            color: rgba(255, 255, 255, .8);
            background: rgba(255, 255, 255, .1);
        }

        .match-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
            height: 100%;
        }

        .match-card:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-4px);
            border-color: rgba(255, 107, 53, .5);
        }

        .match-league {
            display: inline-block;
            font-size: .74rem;
            padding: 3px 12px;
            background: rgba(255, 107, 53, .25);
            color: #ffd5c2;
            border-radius: 12px;
            margin-bottom: 18px;
            font-weight: 600;
        }

        .match-vs {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 16px;
        }

        .team-name {
            flex: 1;
            text-align: center;
            font-size: .98rem;
            font-weight: 600;
            line-height: 1.4;
        }

        .vs-badge {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .75rem;
            font-weight: 700;
            color: rgba(255, 255, 255, .7);
            flex-shrink: 0;
        }

        .match-meta {
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .7);
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, .1);
        }

        .match-meta i {
            margin-right: 6px;
            color: rgba(255, 107, 53, .8);
            width: 14px;
        }

        /* ========= Topic ========= */
        .topic-section {
            background: var(--bg-light);
        }

        .topic-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }

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

        .topic-image {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .topic-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .topic-card:hover .topic-image img {
            transform: scale(1.05);
        }

        .topic-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: rgba(11, 31, 58, .85);
            color: #fff;
            border-radius: 14px;
            font-size: .74rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .topic-body {
            padding: 22px;
        }

        .topic-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .topic-body h3 a {
            color: var(--text-main);
        }

        .topic-body h3 a:hover {
            color: var(--accent);
        }

        .topic-body p {
            color: var(--text-muted);
            font-size: .88rem;
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-link {
            font-size: .85rem;
            font-weight: 600;
            color: var(--accent);
        }

        .topic-link i {
            transition: var(--transition);
        }

        .topic-link:hover i {
            transform: translateX(4px);
        }

        /* ========= FAQ ========= */
        .faq-section {
            background: #fff;
        }

        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border) !important;
            border-radius: var(--radius) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            font-weight: 600;
            color: var(--text-main);
            background: var(--bg-white);
            padding: 18px 22px;
            font-size: .98rem;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: rgba(255, 107, 53, .05);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 107, 53, .15);
            border-color: transparent;
        }

        .accordion-body {
            padding: 18px 22px;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: .92rem;
            border-top: 1px solid var(--border);
        }

        /* ========= CTA ========= */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            left: -60px;
            bottom: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 107, 53, .15);
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .78);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 30px;
        }

        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 36px;
            background: var(--accent);
            color: #fff;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            border: 2px solid transparent;
            box-shadow: 0 8px 24px rgba(255, 107, 53, .35);
            transition: var(--transition);
        }

        .btn-custom:hover {
            background: #fff;
            color: var(--accent);
            border-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255, 107, 53, .3);
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            background: transparent;
            color: #fff;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 500;
            border: 2px solid rgba(255, 255, 255, .5);
            transition: var(--transition);
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ========= Footer ========= */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 0;
            border-top: 3px solid var(--accent);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), #ff9f43);
            border-radius: 10px;
            color: #fff;
            font-size: 1rem;
        }

        .footer-desc {
            font-size: .9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            margin-bottom: 0;
        }

        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-links i {
            margin-right: 6px;
            font-size: .75rem;
            color: var(--accent);
        }

        .footer-contact p {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 46px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, .1);
            text-align: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .4);
        }

        /* ========= Responsive ========= */
        @media (max-width: 1199px) {
            .news-thumb-link {
                width: 190px;
                height: 130px;
            }
        }

        @media (max-width: 991px) {
            .category-hero {
                padding: 60px 0;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .channel-section {
                top: 68px;
            }
            .main-nav-list {
                padding: 10px 0;
            }
            .main-nav-list .nav-item .nav-link {
                padding: 10px 16px;
            }
            .header-trends {
                flex-wrap: wrap;
            }
            .sidebar {
                margin-top: 30px;
                position: static;
            }
            .featured-card {
                height: 280px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 50px 0;
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb-link {
                width: 100%;
                height: 180px;
            }
            .news-meta {
                flex-wrap: wrap;
                gap: 10px;
            }
            .featured-card {
                height: 240px;
                margin-bottom: 4px;
            }
            .search-box input {
                width: 130px;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .btn-custom,
            .btn-outline-light-custom {
                padding: 10px 24px;
                font-size: .92rem;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .hero-desc {
                font-size: .95rem;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1.05rem;
            }
            .brand-logo .brand-icon {
                width: 32px;
                height: 32px;
                font-size: .9rem;
            }
            .btn-nav-cta {
                padding: 0 12px;
                font-size: .78rem;
                height: 36px;
            }
            .search-box {
                display: none;
            }
            .featured-overlay {
                padding: 18px;
            }
            .featured-card h3 {
                font-size: 1.05rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #ff6b35;
            --primary-dark: #e54e1f;
            --secondary: #00d4a0;
            --bg: #0a0e1a;
            --surface: #121829;
            --surface-light: #182136;
            --card: #1a2338;
            --border: rgba(255, 255, 255, 0.08);
            --text: #e8ecf4;
            --text-muted: #7f8ca6;
            --text-dim: #55617a;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
            --spacing-section: 5.5rem;
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
        }
        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 14, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }
        .custom-navbar {
            padding: 0.75rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            padding: 0;
            transition: opacity 0.3s ease;
        }
        .brand-logo:hover {
            color: #fff;
            opacity: 0.85;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            color: #fff;
            font-size: 1.15rem;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0.35rem 0.3rem 0.35rem 1rem;
            width: 240px;
            transition: border-color 0.3s ease, width 0.3s ease;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            width: 270px;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text);
            font-size: 0.9rem;
            flex: 1;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: var(--text-dim);
        }
        .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            font-size: 0.8rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background 0.3s ease, transform 0.2s ease;
        }
        .search-box button:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }
        .btn-nav-cta {
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 0.55rem 1.25rem;
            border-radius: 50px;
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(255, 107, 53, 0.4);
            color: #fff;
        }
        .custom-toggler {
            border: 1px solid var(--border);
            background: transparent;
            padding: 0.45rem 0.6rem;
            border-radius: 8px;
            display: none;
            flex-direction: column;
            gap: 4px;
        }
        .custom-toggler .bar {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
        }
        .main-nav-list {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-wrap: wrap;
            margin-top: 0.5rem;
            width: 100%;
        }
        .main-nav-list .nav-link {
            color: var(--text-muted);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 1.1rem;
            border-radius: 50px;
            transition: color 0.3s ease, background 0.3s ease;
        }
        .main-nav-list .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav-list .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }
        .header-trends {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .header-trends .trend-label {
            font-weight: 600;
        }
        .header-trends a {
            color: var(--text-muted);
            padding: 0.2rem 0.6rem;
            border: 1px solid transparent;
            border-radius: 50px;
            transition: color 0.3s ease, border-color 0.3s ease;
        }
        .header-trends a:hover {
            color: var(--primary);
            border-color: rgba(255, 107, 53, 0.3);
        }
        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 5rem 0 4rem;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 26, 0.92) 30%, rgba(10, 14, 26, 0.65) 75%, rgba(10, 14, 26, 0.45));
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color 0.3s ease;
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .sep {
            color: var(--text-dim);
            font-size: 0.75rem;
        }
        .breadcrumb-custom .current {
            color: var(--text);
            font-weight: 600;
        }
        .article-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 700;
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            margin-bottom: 1.2rem;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }
        .article-hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 840px;
            margin-bottom: 1.2rem;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .article-meta i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        /* ===== Main ===== */
        .article-main {
            padding: 3rem 0 4rem;
            background: var(--bg);
        }
        .article-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #c9d3e4;
        }
        .article-content p {
            margin-bottom: 1.5rem;
        }
        .article-content h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: #fff;
            margin: 2.5rem 0 1rem;
            padding-left: 0.85rem;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin: 2rem 0 0.8rem;
        }
        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #e8ecf4;
            margin: 1.5rem 0 0.6rem;
        }
        .article-content img {
            max-width: 100%;
            border-radius: 12px;
            margin: 1.5rem auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(255, 107, 53, 0.06);
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.8rem 0;
            color: #b8c3d8;
            font-style: italic;
        }
        .article-content ul,
        .article-content ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--secondary);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 0.75rem 1rem;
            text-align: left;
        }
        .article-content table th {
            background: var(--surface-light);
            color: #fff;
            font-weight: 600;
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--secondary);
        }
        .article-content hr {
            border-color: var(--border);
            margin: 2rem 0;
        }
        .article-tag-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }
        .article-tag-row .tag-label {
            color: var(--text-muted);
            font-size: 0.88rem;
            font-weight: 600;
        }
        .article-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.82rem;
            padding: 0.3rem 0.9rem;
            border-radius: 50px;
            transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
        }
        .article-tag:hover {
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary);
            border-color: rgba(255, 107, 53, 0.3);
        }
        .share-row {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-top: 1.2rem;
        }
        .share-row .share-label {
            color: var(--text-muted);
            font-size: 0.88rem;
            font-weight: 600;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: all 0.3s ease;
        }
        .share-btn:hover {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .not-found-block {
            text-align: center;
            padding: 4rem 1.5rem;
        }
        .not-found-block i {
            font-size: 3.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
            display: inline-block;
        }
        .not-found-block h2 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 0.6rem;
        }
        .not-found-block p {
            color: var(--text-muted);
            margin-bottom: 1.8rem;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            color: #fff;
            font-weight: 700;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 107, 53, 0.4);
            color: #fff;
        }
        /* ===== Sidebar ===== */
        .sidebar-widget {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.6rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-sm);
        }
        .widget-title {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 1px solid var(--border);
        }
        .widget-title i {
            color: var(--primary);
            font-size: 0.95rem;
        }
        .widget-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }
        .latest-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .latest-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .latest-list li:last-child {
            border-bottom: none;
        }
        .latest-list .num {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            margin-top: 0.2rem;
        }
        .latest-list .item-title {
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.5;
            display: block;
            transition: color 0.3s ease;
        }
        .latest-list a:hover .item-title {
            color: var(--primary);
        }
        .latest-list .item-meta {
            font-size: 0.78rem;
            color: var(--text-dim);
            display: block;
            margin-top: 0.2rem;
        }
        .cat-link-list {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .cat-link-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.7rem 1rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .cat-link-item i {
            color: var(--text-dim);
            font-size: 0.8rem;
        }
        .cat-link-item:hover {
            background: rgba(255, 107, 53, 0.08);
            border-color: rgba(255, 107, 53, 0.25);
            color: var(--primary);
            transform: translateX(4px);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag-cloud .tag-chip {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.82rem;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .tag-cloud .tag-chip:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .widget-card-img {
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            margin-bottom: 1rem;
        }
        .widget-card-img img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .widget-card-img:hover img {
            transform: scale(1.05);
        }
        /* ===== Related ===== */
        .related-section {
            padding: 4.5rem 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 2rem;
        }
        .section-head h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .section-head h2 i {
            color: var(--primary);
        }
        .section-more {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: color 0.3s ease;
        }
        .section-more:hover {
            color: var(--primary);
        }
        .related-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(255, 107, 53, 0.3);
        }
        .related-card .card-img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.06);
        }
        .related-card .card-img .img-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 107, 53, 0.92);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.9rem;
            border-radius: 50px;
            z-index: 2;
            backdrop-filter: blur(4px);
        }
        .related-card-body {
            padding: 1.3rem 1.4rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 0.6rem;
            transition: color 0.3s ease;
        }
        .related-card:hover .related-card-body h3 {
            color: var(--primary);
        }
        .related-card-body .desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.8rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body .meta {
            font-size: 0.8rem;
            color: var(--text-dim);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-top: auto;
        }
        .related-card-body .meta i {
            color: var(--primary);
            font-size: 0.75rem;
        }
        .related-card-body .meta .divider {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--text-dim);
        }
        /* ===== FAQ ===== */
        .faq-section {
            padding: 5rem 0;
            background: var(--bg);
        }
        .faq-section .section-head {
            justify-content: center;
            text-align: center;
        }
        .faq-section .section-head h2 {
            justify-content: center;
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(255, 107, 53, 0.25);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            padding: 1.2rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary);
            font-size: 0.8rem;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.3rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 5rem 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 26, 0.82);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .cta-inner p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.85rem 2.4rem;
            border-radius: 50px;
            box-shadow: 0 8px 28px rgba(255, 107, 53, 0.35);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 107, 53, 0.45);
            color: #fff;
        }
        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            border: 1px solid var(--border);
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.05);
            margin-left: 0.8rem;
            transition: all 0.3s ease;
        }
        .btn-cta-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            transform: translateY(-2px);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: #070b14;
            border-top: 1px solid var(--border);
            padding: 4rem 0 0;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 1rem;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: color 0.3s ease, transform 0.3s ease;
        }
        .footer-links a i {
            font-size: 0.75rem;
            color: var(--text-dim);
        }
        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }
        .footer-contact p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .footer-contact i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            color: var(--text-dim);
            font-size: 0.85rem;
        }
        .footer-bottom p {
            margin: 0;
        }
        /* ===== Focus states ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 4rem;
            }
            .search-box {
                width: 180px;
            }
            .search-box:focus-within {
                width: 200px;
            }
            .article-hero-title {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 991.98px) {
            .custom-toggler {
                display: inline-flex;
            }
            .search-box,
            .btn-nav-cta {
                display: none;
            }
            .main-nav-list {
                margin-top: 1rem;
                padding-top: 0.5rem;
                border-top: 1px solid var(--border);
            }
            .main-nav-list .nav-link {
                padding: 0.5rem 0.8rem;
            }
            .header-trends {
                display: none;
            }
            .article-hero {
                padding: 3.5rem 0 2.5rem;
            }
            .article-hero-title {
                font-size: 2rem;
            }
            .article-card {
                padding: 1.8rem;
            }
            .sidebar-widget {
                margin-top: 1rem;
            }
            .related-card .card-img {
                height: 170px;
            }
            .cta-inner h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
            }
            .article-hero {
                padding: 2.8rem 0 2rem;
            }
            .article-hero-title {
                font-size: 1.7rem;
            }
            .article-meta {
                gap: 0.8rem;
                font-size: 0.82rem;
            }
            .article-card {
                padding: 1.2rem;
                border-radius: 12px;
            }
            .article-content {
                font-size: 0.98rem;
                line-height: 1.8;
            }
            .article-content h2 {
                font-size: 1.4rem;
            }
            .article-content h3 {
                font-size: 1.2rem;
            }
            .section-head h2 {
                font-size: 1.4rem;
            }
            .related-card .card-img {
                height: 160px;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 1rem 1.2rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
            .btn-cta {
                padding: 0.7rem 1.8rem;
                font-size: 0.95rem;
            }
            .btn-cta-outline {
                margin-left: 0.5rem;
                padding: 0.7rem 1.5rem;
                font-size: 0.9rem;
            }
            .footer-brand {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1.1rem;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .article-hero {
                padding: 2.2rem 0 1.6rem;
            }
            .article-hero-title {
                font-size: 1.45rem;
            }
            .breadcrumb-custom {
                font-size: 0.8rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }
            .article-card {
                padding: 1rem;
            }
            .article-content {
                font-size: 0.95rem;
            }
            .article-content h2 {
                font-size: 1.25rem;
                padding-left: 0.6rem;
            }
            .related-card .card-img {
                height: 140px;
            }
            .related-card-body {
                padding: 1rem;
            }
            .cta-section {
                padding: 3.5rem 0;
            }
            .cta-inner h2 {
                font-size: 1.25rem;
            }
            .cta-inner p {
                font-size: 0.9rem;
            }
            .btn-cta,
            .btn-cta-outline {
                display: block;
                width: 100%;
                justify-content: center;
                margin: 0.5rem 0;
            }
            .footer-bottom {
                font-size: 0.78rem;
                padding: 1.2rem 0;
            }
            .section-head {
                flex-direction: column;
                gap: 0.8rem;
                align-items: flex-start;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 0.9rem 1rem;
            }
            .faq-answer {
                padding: 0 1rem 0.9rem;
                font-size: 0.88rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #ff6b35;
            --primary-600: #f85a26;
            --primary-soft: #fff3ed;
            --secondary: #1b2a4a;
            --secondary-800: #16213e;
            --accent: #ffc94d;
            --bg-body: #f7f8fc;
            --bg-white: #ffffff;
            --bg-dark: #141b2d;
            --text-main: #1a2233;
            --text-muted: #6b7280;
            --border: #e9ecf5;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(20, 27, 45, 0.06);
            --shadow-md: 0 10px 30px rgba(20, 27, 45, 0.10);
            --shadow-lg: 0 20px 50px rgba(20, 27, 45, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

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

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding: 80px 0;
        }

        .section-title-wrap {
            margin-bottom: 48px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.8;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--primary) 0%, #ff9a5c 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(20, 27, 45, 0.04);
        }

        .custom-navbar {
            padding: 14px 0;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.02em;
            margin-right: 24px;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--secondary);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #ff9a5c);
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }

        .nav-right {
            gap: 12px;
        }

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

        .search-box input {
            width: 190px;
            height: 40px;
            padding: 0 42px 0 16px;
            border: 1px solid var(--border);
            border-radius: 50px;
            background: #f5f7fb;
            font-size: 14px;
            color: var(--text-main);
            transition: var(--transition);
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.12);
        }

        .search-box button {
            position: absolute;
            right: 4px;
            width: 32px;
            height: 32px;
            border: none;
            border-radius: 50%;
            background: transparent;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .search-box button:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            background: linear-gradient(135deg, var(--primary), #ff8c5a);
            color: #fff;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
            transition: var(--transition);
        }

        .btn-nav-cta:hover {
            background: linear-gradient(135deg, var(--primary-600), #ff6b35);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        .custom-toggler {
            border: none;
            background: transparent;
            padding: 8px;
            display: flex;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .custom-toggler:hover {
            background: var(--primary-soft);
        }

        .custom-toggler .bar {
            display: block;
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background: var(--secondary);
            transition: var(--transition);
        }

        .main-nav-list {
            gap: 4px;
            align-items: center;
        }

        .main-nav-list .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 18px;
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
        }

        .main-nav-list .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .main-nav-list .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .header-trends {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            padding-left: 20px;
            border-left: 1px solid var(--border);
        }

        .header-trends .trend-label {
            color: var(--text-muted);
            font-weight: 500;
        }

        .header-trends a {
            color: var(--text-muted);
            padding: 2px 10px;
            border-radius: 6px;
            transition: var(--transition);
            background: #f5f7fb;
        }

        .header-trends a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(27, 42, 74, 0.95) 0%, rgba(20, 27, 45, 0.88) 60%, rgba(255, 107, 53, 0.2) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 100px 0 90px;
            color: #fff;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -10%;
            bottom: -40px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.3), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
        }

        .page-hero .hero-badge i {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }

        .page-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

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

        .btn-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            background: #fff;
            color: var(--secondary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }

        .btn-light-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            color: var(--secondary);
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-item .num {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ===== 权益卡片 ===== */
        .benefit-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            height: 100%;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .benefit-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), #ff9a5c);
            opacity: 0;
            transition: var(--transition);
        }

        .benefit-card:hover {
            border-color: transparent;
            box-shadow: var(--shadow-lg);
            transform: translateY(-8px);
        }

        .benefit-card:hover::before {
            opacity: 1;
        }

        .benefit-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 22px;
            transition: var(--transition);
        }

        .benefit-card:hover .benefit-icon {
            background: linear-gradient(135deg, var(--primary), #ff8c5a);
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.3);
        }

        .benefit-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .benefit-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== 等级卡片 ===== */
        .tier-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 30px;
            height: 100%;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .tier-card.featured {
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-md);
        }

        .tier-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-soft);
            color: var(--primary);
        }

        .tier-card.featured .tier-badge {
            background: linear-gradient(135deg, var(--primary), #ff8c5a);
            color: #fff;
        }

        .tier-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            border-radius: 24px;
            margin-bottom: 24px;
            font-size: 28px;
        }

        .tier-icon.silver {
            background: #f1f3f8;
            color: #8e99ae;
        }

        .tier-icon.gold {
            background: #fff9e8;
            color: #d4a502;
        }

        .tier-icon.diamond {
            background: linear-gradient(135deg, #e8f4ff, #d9f4ff);
            color: #0e9bd8;
        }

        .tier-card h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .tier-card .tier-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .tier-features {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .tier-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-main);
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
        }

        .tier-features li:last-child {
            border-bottom: none;
        }

        .tier-features li i {
            color: var(--primary);
            margin-top: 3px;
            font-size: 13px;
        }

        .tier-card .tier-price {
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-muted);
        }

        .tier-card .tier-price strong {
            font-size: 28px;
            color: var(--text-main);
            font-weight: 800;
        }

        .btn-tier {
            margin-top: 18px;
            width: 100%;
            padding: 12px;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }

        .btn-tier:hover {
            background: var(--primary-600);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
            transform: translateY(-2px);
        }

        .tier-card.featured .btn-tier {
            background: linear-gradient(135deg, var(--primary), #ff8c5a);
        }

        /* ===== 内容卡片 ===== */
        .content-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }

        .content-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }

        .content-card-image {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .content-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .content-card:hover .content-card-image img {
            transform: scale(1.06);
        }

        .content-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(255, 107, 53, 0.9);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(8px);
        }

        .content-card-body {
            padding: 22px;
        }

        .content-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.5;
            color: var(--text-main);
        }

        .content-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .content-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .content-card-meta i {
            color: var(--primary);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-800) 100%);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.2), transparent 70%);
        }

        .stat-number-wrap {
            text-align: center;
            padding: 20px;
        }

        .stat-number-wrap .stat-icon {
            font-size: 32px;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .stat-number-wrap .stat-num {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stat-number-wrap .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 24px 20px 68px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(27, 42, 74, 0.92), rgba(20, 27, 45, 0.88)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 90px 0;
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 36px;
        }

        .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.9;
            max-width: 330px;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            margin-top: 50px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .main-nav-list .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }
            .header-trends {
                display: none;
            }
        }

        @media (max-width: 991px) {
            .site-header {
                position: relative;
            }
            .custom-navbar {
                padding: 12px 0;
            }
            .brand-logo {
                font-size: 18px;
            }
            .search-box {
                display: none;
            }
            .nav-right .btn-nav-cta {
                font-size: 13px;
                padding: 0 14px;
                height: 36px;
            }
            .main-nav-list {
                margin-top: 12px;
                padding-top: 12px;
                border-top: 1px solid var(--border);
                width: 100%;
            }
            .main-nav-list .nav-link {
                padding: 10px 12px;
            }
            .main-nav-list .nav-link.active {
                background: var(--primary-soft);
            }
            .section-padding {
                padding: 60px 0;
            }
            .page-hero {
                padding: 70px 0 60px;
            }
            .page-hero h1 {
                font-size: 38px;
            }
            .stats-section .stat-number-wrap {
                padding: 30px 15px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .section-title {
                font-size: 26px;
            }
            .benefit-card {
                padding: 28px 22px;
            }
            .tier-card {
                padding: 28px 22px;
            }
            .cta-section h2 {
                font-size: 30px;
            }
            .stat-number-wrap .stat-num {
                font-size: 36px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-item .num {
                font-size: 28px;
            }
            .footer-bottom {
                margin-top: 30px;
            }
        }

        @media (max-width: 575px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .btn-nav-cta {
                display: none;
            }
            .brand-logo {
                font-size: 16px;
                margin-right: auto;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .hero-btn-group .btn-light-custom,
            .hero-btn-group .btn-outline-light-custom {
                padding: 10px 18px;
                font-size: 14px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px 16px 18px;
            }
        }

.stats-section{margin:0;}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #00d4aa;
            --primary-rgb: 0, 212, 170;
            --primary-hover: #00bf9a;
            --secondary: #7c6cf0;
            --secondary-hover: #6a5ae0;
            --dark: #0a0e17;
            --dark-2: #0f1522;
            --card-bg: #141c2c;
            --card-hover: #1a2438;
            --text-main: #e8ecf3;
            --text-secondary: #9ca8bd;
            --text-muted: #6b7689;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 212, 170, 0.35);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.4);
            --shadow-primary: 0 8px 30px rgba(0, 212, 170, 0.25);
            --transition: all 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        /* ========== 基础重置 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-base);
            background: var(--dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 通用 ========== */
        .section-title-wrap {
            margin-bottom: 40px;
        }

        .section-title-wrap .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            background: rgba(var(--primary-rgb), 0.1);
            padding: 6px 16px;
            border-radius: 40px;
            border: 1px solid rgba(var(--primary-rgb), 0.2);
        }

        .section-title-wrap .section-label i {
            font-size: 12px;
        }

        .section-title-wrap h2 {
            font-size: 36px;
            font-weight: 700;
            margin: 14px 0 8px;
            color: var(--text-main);
            line-height: 1.3;
        }

        .section-title-wrap p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            margin-bottom: 0;
        }

        /* ========== 导航栏 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }

        .custom-navbar {
            padding: 0;
            min-height: 68px;
            flex-wrap: wrap;
            background: transparent;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 0;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.01em;
        }

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

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.35);
        }

        .nav-right {
            gap: 10px;
            margin-left: 16px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--dark-2);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 0 6px 0 16px;
            height: 38px;
            transition: var(--transition);
        }

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

        .search-box input {
            width: 160px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 13px;
        }

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

        .search-box button {
            width: 28px;
            height: 28px;
            border: none;
            background: var(--primary);
            color: var(--dark);
            border-radius: 50%;
            font-size: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .search-box button:hover {
            background: var(--primary-hover);
            transform: scale(1.06);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 7px 16px;
            border-radius: 40px;
            border: none;
            white-space: nowrap;
            transition: var(--transition);
        }

        .btn-nav-cta:hover {
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.3);
        }

        .custom-toggler {
            border: 1px solid var(--border);
            background: transparent;
            width: 42px;
            height: 38px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            border-radius: 10px;
            margin-left: 4px;
            padding: 0;
        }

        .custom-toggler .bar {
            display: block;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--text-main);
            transition: var(--transition);
        }

        .custom-toggler:hover .bar {
            background: var(--primary);
        }

        #mainNav {
            flex-basis: 100%;
            max-width: 100%;
            border-top: 1px solid var(--border);
        }

        .main-nav-list {
            padding: 0;
            margin: 0;
            gap: 4px;
        }

        .main-nav-list .nav-link {
            padding: 12px 18px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            position: relative;
        }

        .main-nav-list .nav-link::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 6px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }

        .main-nav-list .nav-link:hover,
        .main-nav-list .nav-link.active {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.06);
        }

        .main-nav-list .nav-link.active::after {
            transform: scaleX(1);
        }

        .header-trends {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 0 8px 24px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .header-trends .trend-label {
            white-space: nowrap;
        }

        .header-trends a {
            color: var(--text-secondary);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 2px 10px;
            font-size: 12px;
            transition: var(--transition);
        }

        .header-trends a:hover {
            color: var(--primary);
            border-color: var(--border-hover);
            background: rgba(var(--primary-rgb), 0.06);
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 90px 0 90px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 14, 23, 0.92) 15%, rgba(10, 14, 23, 0.65) 55%, rgba(10, 14, 23, 0.4) 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }

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

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

        .hero-breadcrumb i {
            font-size: 10px;
            color: var(--text-muted);
        }

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

        .hero-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(var(--primary-rgb), 0.15);
            border: 1px solid rgba(var(--primary-rgb), 0.3);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 40px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

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

        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }

        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: var(--dark);
            font-weight: 700;
            border: none;
            border-radius: 50px;
            padding: 13px 28px;
            font-size: 15px;
            transition: var(--transition);
        }

        .btn-custom:hover {
            background: var(--primary-hover);
            color: var(--dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-primary);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-main);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            color: var(--primary);
            border-color: var(--border-hover);
            background: rgba(var(--primary-rgb), 0.08);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-stat .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* ========== 分类标签 ========== */
        .topic-tabs {
            padding: 60px 0 0;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 14px;
            padding: 9px 20px;
            border-radius: 40px;
            cursor: pointer;
            transition: var(--transition);
        }

        .topic-tag:hover {
            color: var(--primary);
            border-color: var(--border-hover);
            background: rgba(var(--primary-rgb), 0.06);
            transform: translateY(-2px);
        }

        .topic-tag.active {
            color: var(--dark);
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ========== 课程卡片 ========== */
        .course-section {
            padding: 60px 0 20px;
        }

        .course-grid {
            display: grid;
            gap: 24px;
        }

        .course-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            position: relative;
        }

        .course-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-hover);
        }

        .course-thumb {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .course-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .course-card:hover .course-thumb img {
            transform: scale(1.05);
        }

        .course-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 23, 0.7), transparent 50%);
            opacity: 0.8;
            transition: var(--transition);
        }

        .course-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(10, 14, 23, 0.8);
            backdrop-filter: blur(8px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            border: 1px solid rgba(var(--primary-rgb), 0.3);
        }

        .course-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) scale(0.8);
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            z-index: 2;
            opacity: 0;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.4);
        }

        .course-card:hover .course-play {
            opacity: 1;
            transform: translate(-50%, -50%) scale(1);
        }

        .course-info {
            padding: 22px 22px 24px;
        }

        .course-meta-line {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .course-meta-line .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.08);
            padding: 3px 10px;
            border-radius: 30px;
            font-weight: 600;
        }

        .course-meta-line .meta-time {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .course-info h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .course-info h3 a {
            color: var(--text-main);
        }

        .course-info h3 a:hover {
            color: var(--primary);
        }

        .course-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .course-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .course-footer .teacher {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .course-footer .teacher i {
            color: var(--primary);
            font-size: 18px;
        }

        .course-footer .views {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== 教学体系 ========== */
        .method-section {
            padding: 70px 0;
            background: var(--dark-2);
            margin-top: 60px;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .method-grid {
            display: grid;
            gap: 24px;
        }

        .method-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            position: relative;
        }

        .method-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-md);
        }

        .method-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.25;
            line-height: 1;
            position: absolute;
            top: 16px;
            right: 18px;
            font-family: Georgia, serif;
        }

        .method-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 24px;
            margin-bottom: 18px;
            box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.25);
        }

        .method-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* ========== 数据统计 ========== */
        .stats-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 23, 0.85);
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stat-block {
            text-align: center;
            padding: 30px 16px;
        }

        .stat-block .stat-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .stat-block .stat-value {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-block .stat-label {
            color: var(--text-secondary);
            font-size: 14px;
            margin-top: 6px;
        }

        /* ========== 热门排行 ========== */
        .rank-section {
            padding: 70px 0 0;
        }

        .rank-section .rank-intro {
            margin-bottom: 30px;
        }

        .rank-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .rank-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-md);
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .rank-item:last-of-type {
            border-bottom: none;
        }

        .rank-item:hover {
            background: var(--card-hover);
        }

        .rank-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            width: 44px;
            text-align: center;
            font-family: Georgia, serif;
            opacity: 0.8;
        }

        .rank-item:nth-child(1) .rank-num,
        .rank-item:nth-child(2) .rank-num,
        .rank-item:nth-child(3) .rank-num {
            color: var(--secondary);
        }

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

        .rank-info h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-info p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }

        .rank-link {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(var(--primary-rgb), 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .rank-link:hover {
            background: var(--primary);
            color: var(--dark);
            transform: translateX(3px);
        }

        .rank-cover {
            margin-top: 30px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
        }

        .rank-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .rank-cover .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 23, 0.9), transparent 60%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px;
        }

        .rank-cover .cover-overlay h3 {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
        }

        .rank-cover .cover-overlay p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 6px 0 14px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 70px 0;
        }

        .custom-accordion {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--card-bg);
        }

        .custom-accordion .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--border);
        }

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

        .custom-accordion .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            transition: var(--transition);
        }

        .custom-accordion .accordion-button::after {
            background: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            width: auto;
            height: auto;
            transition: var(--transition);
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.04);
        }

        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .custom-accordion .accordion-button:focus {
            box-shadow: none;
        }

        .custom-accordion .accordion-body {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            padding: 4px 24px 22px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            margin-top: 30px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 14, 23, 0.92), rgba(10, 14, 23, 0.72));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-content {
            max-width: 560px;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-content p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 28px;
        }

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

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--dark-2);
            border-top: 1px solid var(--border);
            padding: 54px 0 0;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .site-footer .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }

        .footer-links a i {
            font-size: 12px;
            color: var(--primary);
        }

        .footer-contact p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 40px;
            padding: 18px 0;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .main-nav-list {
                padding: 10px 0;
                gap: 2px;
            }

            .main-nav-list .nav-link {
                padding: 10px 14px;
            }

            .header-trends {
                padding: 0 0 12px;
            }

            .nav-right {
                margin-left: auto;
            }

            .category-hero {
                padding: 70px 0;
            }

            .category-hero h1 {
                font-size: 36px;
            }

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

            .stat-block .stat-value {
                font-size: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .search-box {
                display: none;
            }

            .btn-nav-cta {
                padding: 7px 12px;
                font-size: 12px;
            }

            .custom-navbar {
                min-height: 60px;
            }

            .brand-logo {
                font-size: 18px;
                padding: 10px 0;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
                border-radius: 10px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .hero-stats {
                gap: 18px;
            }

            .hero-stat .stat-num {
                font-size: 22px;
            }

            .section-title-wrap h2 {
                font-size: 28px;
            }

            .course-info h3 {
                font-size: 17px;
            }

            .method-card {
                padding: 24px 18px;
            }

            .method-icon {
                width: 54px;
                height: 54px;
                font-size: 20px;
            }

            .stat-block .stat-value {
                font-size: 28px;
            }

            .rank-item {
                padding: 14px 16px;
            }

            .rank-num {
                font-size: 22px;
                width: 34px;
            }

            .cta-content h2 {
                font-size: 26px;
            }

            .footer-title {
                margin-top: 20px;
            }
        }

        @media (max-width: 520px) {
            .course-grid {
                grid-template-columns: 1fr;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-custom,
            .hero-actions .btn-ghost {
                justify-content: center;
            }

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

            .category-hero h1 {
                font-size: 26px;
            }

            .hero-stats {
                flex-direction: column;
                gap: 14px;
            }

            .btn-nav-cta {
                display: none;
            }
        }

        @media (min-width: 992px) and (max-width: 1199.98px) {
            .search-box input {
                width: 110px;
            }

            .header-trends {
                gap: 8px;
                font-size: 12px;
            }
        }