/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1b2d;
            --primary-light: #1a2d4a;
            --primary-dark: #080f1a;
            --accent: #e8a838;
            --accent-hover: #d4952e;
            --accent-light: #fdf0d6;
            --bg: #f5f6fa;
            --bg-alt: #ffffff;
            --bg-dark: #0f1b2d;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --text-muted: #9ca3af;
            --border: #e9ecef;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-accent: 0 4px 20px rgba(232,168,56,0.3);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --nav-height: 72px;
            --max-width: 1200px;
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-title .subtitle-line {
            display: inline-block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin-top: 8px;
        }

        /* ===== Header & Navigation (分段标签导航) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.98);
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
        }
        .nav-logo .logo-text {
            color: var(--primary);
        }
        .nav-logo .logo-text span {
            color: var(--accent);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg);
            border-radius: var(--radius-xl);
            padding: 4px;
        }
        .nav-tabs a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-tabs a i {
            font-size: 0.85rem;
        }
        .nav-tabs a:hover {
            color: var(--text);
            background: rgba(255,255,255,0.6);
        }
        .nav-tabs a.active {
            background: var(--bg-alt);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            font-weight: 600;
        }
        .nav-tabs a.active i {
            color: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 100px;
            padding: 0 16px 0 12px;
            height: 40px;
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--accent);
            background: var(--bg-alt);
            box-shadow: 0 0 0 3px rgba(232,168,56,0.15);
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 0 8px;
            height: 100%;
            width: 140px;
            font-size: 0.85rem;
            color: var(--text);
            outline: none;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button {
            color: var(--text-light);
            font-size: 0.9rem;
            padding: 4px;
            transition: color var(--transition);
        }
        .nav-search button:hover { color: var(--accent); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            color: var(--primary);
            box-shadow: var(--shadow-accent);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover { background: var(--border); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: var(--nav-height);
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.4;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1.0);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,45,0.88) 0%, rgba(15,27,45,0.6) 50%, rgba(15,27,45,0.88) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 40px 24px;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(232,168,56,0.15);
            border: 1px solid rgba(232,168,56,0.3);
            color: var(--accent);
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--accent), #f5c842);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary);
            box-shadow: var(--shadow-accent);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.3);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(232,168,56,0.1);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            margin-top: 2px;
        }

        /* ===== Section Spacing ===== */
        section { padding: 80px 0; }
        section.bg-alt { background: var(--bg-alt); }
        section.bg-dark { background: var(--bg-dark); color: var(--text-white); }
        section.bg-dark .section-title h2 { color: var(--text-white); }
        section.bg-dark .section-title p { color: rgba(255,255,255,0.65); }
        section.bg-dark .section-title .subtitle-line { background: var(--accent); }

        /* ===== 平台简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .intro-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .intro-text h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .intro-text p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text);
        }
        .intro-features li i {
            color: var(--accent);
            font-size: 0.85rem;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-light);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* ===== 赛事分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .category-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .category-card .icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            background: var(--accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            transition: all var(--transition);
        }
        .category-card:hover .icon {
            background: var(--accent);
            color: var(--primary);
            transform: scale(1.05);
        }
        .category-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .category-card .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg);
            border-radius: 100px;
            font-size: 0.8rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .category-card .tag i { margin-right: 4px; color: var(--accent); }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.08);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .stat-card .num sup { font-size: 1rem; }
        .stat-card .label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-top: 6px;
        }

        /* ===== 最新资讯列表 (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card .thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .news-card .body {
            padding: 20px 22px 24px;
        }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .meta .cat {
            padding: 2px 10px;
            background: var(--accent-light);
            color: var(--accent-hover);
            border-radius: 100px;
            font-weight: 500;
        }
        .news-card .meta .date i { margin-right: 4px; }
        .news-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-card h4 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .news-card h4 a:hover { color: var(--accent); }
        .news-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.4rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 特色优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--accent);
            transition: height var(--transition);
        }
        .feature-card:hover::before { height: 100%; }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card .icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
            display: block;
        }
        .feature-card h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== 直播流程 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            transition: all var(--transition);
        }
        .step-item:hover .step-num {
            transform: scale(1.1);
            box-shadow: var(--shadow-accent);
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .step-item::after {
            content: '→';
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.4rem;
            color: var(--accent);
            font-weight: 300;
        }
        .step-item:last-child::after { display: none; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-inner h2 {
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: rgba(255,255,255,0.7);
            max-width: 580px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-inner .btn-primary {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.6);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .nav-logo {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand .nav-logo .logo-text { color: var(--text-white); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.5);
            font-size: 0.88rem;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-socials a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image img { height: 300px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps { grid-template-columns: repeat(2, 1fr); }
            .step-item::after { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-stats { gap: 20px; }
            .hero-stat .num { font-size: 1.4rem; }
            .nav-tabs { display: none; }
            .nav-actions .nav-search { display: none; }
            .nav-actions .nav-cta { display: none; }
            .mobile-toggle { display: flex; }
            .nav-tabs.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: var(--bg-alt);
                border-radius: 0 0 var(--radius) var(--radius);
                box-shadow: var(--shadow-lg);
                padding: 12px 16px;
                gap: 4px;
                border-top: 1px solid var(--border);
            }
            .nav-tabs.open a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            section { padding: 56px 0; }
            .intro-features { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card { padding: 24px 16px; }
            .stat-card .num { font-size: 1.8rem; }
            .features-grid { grid-template-columns: 1fr; }
            .steps { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-inner h2 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.7rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .container { padding: 0 16px; }
            .section-title { margin-bottom: 32px; }
            .news-card .thumb { height: 140px; }
        }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #E53935;
            --primary-dark: #C62828;
            --primary-light: #FFEBEE;
            --accent: #FF6F00;
            --accent-light: #FFF8E1;
            --bg-body: #F5F5F5;
            --bg-white: #FFFFFF;
            --bg-card: #FFFFFF;
            --bg-dark: #1A1A2E;
            --bg-dark-alt: #16213E;
            --text-dark: #212121;
            --text-body: #424242;
            --text-light: #757575;
            --text-white: #FAFAFA;
            --border: #E0E0E0;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --transition: 0.25s ease;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul { list-style: none; }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .nav-logo .logo-text { color: var(--text-dark); }
        .nav-logo .logo-text span { color: var(--primary); }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-body);
            border-radius: var(--radius-xl);
            padding: 4px;
        }
        .nav-tabs a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-tabs a i { font-size: 0.85rem; }
        .nav-tabs a:hover { color: var(--primary); background: rgba(229,57,53,0.06); }
        .nav-tabs a.active { background: var(--bg-white); color: var(--primary); box-shadow: var(--shadow-sm); }
        .nav-tabs a.active i { color: var(--primary); }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-cta .btn-outline {
            padding: 8px 18px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-body);
            background: transparent;
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-cta .btn-outline:hover { border-color: var(--primary); color: var(--primary); }
        .nav-cta .btn-primary {
            padding: 8px 22px;
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-cta .btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(229,57,53,0.35); }

        /* Mobile Toggle */
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: all var(--transition);
        }

        .mobile-nav { display: none; }

        @media (max-width: 900px) {
            .nav-tabs, .nav-cta { display: none; }
            .mobile-toggle { display: flex; }
            .mobile-nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                z-index: 999;
                padding: 16px 24px;
                flex-direction: column;
                gap: 8px;
            }
            .mobile-nav.open { display: flex; }
            .mobile-nav a {
                display: flex;
                align-items: center;
                gap: 10px;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 1rem;
                font-weight: 500;
                color: var(--text-body);
                text-decoration: none;
                transition: background var(--transition);
            }
            .mobile-nav a i { width: 20px; color: var(--primary); }
            .mobile-nav a:hover { background: var(--primary-light); color: var(--primary); }
            .mobile-nav a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
            .mobile-nav .btn-primary {
                display: flex;
                align-items: center;
                justify-content: center;
                gap: 8px;
                margin-top: 8px;
                padding: 12px;
                border-radius: var(--radius-md);
                font-size: 1rem;
                font-weight: 600;
                color: #fff;
                background: var(--primary);
                text-decoration: none;
            }
            .mobile-nav .btn-primary:hover { background: var(--primary-dark); }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 12px; }
            .nav-logo { font-size: 1.2rem; }
            .nav-logo .logo-icon { width: 32px; height: 32px; font-size: 0.95rem; }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
        }
        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: color var(--transition);
        }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb span { color: rgba(255,255,255,0.5); }
        .article-hero .breadcrumb i { font-size: 0.7rem; }
        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 820px;
            margin-bottom: 16px;
        }
        .article-hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-hero .meta-line .badge {
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-hero .meta-line i { margin-right: 4px; }

        @media (max-width: 768px) {
            .article-hero { padding: 40px 0 32px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .meta-line { gap: 12px; font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.3rem; }
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 50px 0 70px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 40px;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 1.2em;
        }
        .article-body .content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 1.8em 0 0.8em;
            padding-bottom: 0.4em;
            border-bottom: 2px solid var(--primary-light);
        }
        .article-body .content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-dark);
            margin: 1.5em 0 0.6em;
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content ul, .article-body .content ol {
            padding-left: 1.5em;
            margin-bottom: 1.2em;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-body .content a:hover { color: var(--primary-dark); }

        .article-body .content .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 2em;
            padding-top: 1.5em;
            border-top: 1px solid var(--border-light);
        }
        .article-body .content .tag-list .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-body);
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            color: var(--text-light);
            transition: all var(--transition);
            text-decoration: none;
        }
        .article-body .content .tag-list .tag:hover { background: var(--primary-light); color: var(--primary); }

        .article-body .not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-body .not-found i {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-body .not-found h2 {
            font-size: 1.6rem;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .article-body .not-found p { color: var(--text-light); margin-bottom: 24px; }
        .article-body .not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-xl);
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
        }
        .article-body .not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(229,57,53,0.35); }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-card .related-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            text-decoration: none;
            transition: all var(--transition);
        }
        .sidebar-card .related-item:last-child { border-bottom: none; }
        .sidebar-card .related-item:hover { padding-left: 6px; }
        .sidebar-card .related-item img {
            width: 70px;
            height: 52px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-card .related-item .info { flex: 1; }
        .sidebar-card .related-item .info .title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-card .related-item .info .date {
            font-size: 0.75rem;
            color: var(--text-light);
        }
        .sidebar-card .cat-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card .cat-list li:last-child { border-bottom: none; }
        .sidebar-card .cat-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-body);
            text-decoration: none;
            transition: all var(--transition);
            font-size: 0.95rem;
        }
        .sidebar-card .cat-list a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-card .cat-list a span { color: var(--text-light); font-size: 0.8rem; background: var(--bg-body); padding: 2px 10px; border-radius: var(--radius-xl); }
        .sidebar-card .cta-box {
            text-align: center;
        }
        .sidebar-card .cta-box p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .sidebar-card .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-xl);
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
        }
        .sidebar-card .cta-box .btn-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(229,57,53,0.35); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr 280px; gap: 28px; }
        }
        @media (max-width: 868px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-body { padding: 28px 20px; }
            .sidebar-card { padding: 20px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 14px; }
            .article-body .content { font-size: 0.98rem; }
            .article-body .content h2 { font-size: 1.25rem; }
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 0 0 60px;
        }
        .related-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .related-section .section-header h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .related-section .section-header a {
            font-size: 0.9rem;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .related-section .section-header a:hover { color: var(--primary-dark); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            text-decoration: none;
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .related-card .info {
            padding: 16px 18px 18px;
        }
        .related-card .info .tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-xl);
            font-size: 0.7rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .related-card .info .title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .info .date {
            font-size: 0.78rem;
            color: var(--text-light);
        }
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card { display: flex; }
            .related-card img { width: 120px; height: 90px; flex-shrink: 0; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.85);
            padding: 56px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .site-footer .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .nav-logo .logo-text { color: #fff; }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 320px;
        }
        .site-footer .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li { margin-bottom: 10px; }
        .site-footer .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover { color: #fff; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-socials { display: flex; gap: 14px; }
        .footer-socials a {
            color: rgba(255,255,255,0.5);
            font-size: 1.1rem;
            transition: color var(--transition);
        }
        .footer-socials a:hover { color: #fff; }

        @media (max-width: 900px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .site-footer .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
        }

        /* ===== Additional Utilities ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0b8;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #6b7280;
            --text-light: #f1f5f9;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.10);
            --shadow-lg: 0 18px 48px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1280px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow { max-width: 960px; }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; margin-bottom: 0.5em; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; color: var(--text-body); }
        .text-center { text-align: center; }
        .text-muted { color: var(--text-muted); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem;
            border: none; cursor: pointer; transition: var(--transition);
            text-decoration: none; line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary); color: #fff;
            box-shadow: 0 4px 14px rgba(230,57,70,0.35);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.45); color: #fff; }
        .btn-secondary {
            background: var(--secondary); color: #fff;
            box-shadow: 0 4px 14px rgba(29,53,87,0.30);
        }
        .btn-secondary:hover { background: #15273f; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(29,53,87,0.40); color: #fff; }
        .btn-outline {
            background: transparent; color: var(--primary); border: 2px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 8px 20px; font-size: 0.9rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
            background: var(--primary-light); color: var(--primary-dark);
        }
        .badge-secondary { background: #dbeafe; color: #1e40af; }
        .badge-accent { background: #fef3c7; color: #b45309; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height); background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.96);
        }
        .header-inner {
            max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
            height: 100%; display: flex; align-items: center; justify-content: space-between;
        }
        .nav-logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
        .nav-logo .logo-icon {
            width: 38px; height: 38px; border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.2rem;
        }
        .nav-logo .logo-text { font-size: 1.35rem; font-weight: 800; color: var(--text-dark); letter-spacing: -0.03em; }
        .nav-logo .logo-text span { color: var(--primary); }
        .nav-tabs { display: flex; align-items: center; gap: 4px; }
        .nav-tabs a {
            padding: 8px 18px; border-radius: 50px; font-weight: 500; font-size: 0.95rem;
            color: var(--text-muted); transition: var(--transition); text-decoration: none;
            display: flex; align-items: center; gap: 6px;
        }
        .nav-tabs a:hover { color: var(--text-dark); background: var(--bg-light); }
        .nav-tabs a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(230,57,70,0.30); }
        .nav-tabs a i { font-size: 0.9rem; }
        .nav-cta { display: flex; align-items: center; gap: 12px; }
        .mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-dark); cursor: pointer; padding: 4px; }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative; padding: 80px 0 60px; overflow: hidden;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            min-height: 320px; display: flex; align-items: center;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.88) 0%, rgba(26,26,46,0.60) 100%);
        }
        .page-banner .container { position: relative; z-index: 2; width: 100%; }
        .page-banner h1 { color: #fff; font-size: 2.6rem; font-weight: 800; margin-bottom: 12px; }
        .page-banner p { color: rgba(255,255,255,0.85); font-size: 1.15rem; max-width: 640px; margin-bottom: 20px; }
        .page-banner .breadcrumb { display: flex; gap: 8px; font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-bottom: 16px; }
        .page-banner .breadcrumb a { color: rgba(255,255,255,0.75); }
        .page-banner .breadcrumb a:hover { color: #fff; }
        .page-banner .breadcrumb span { color: rgba(255,255,255,0.9); }

        /* ===== Section Spacing ===== */
        .section { padding: 70px 0; }
        .section-alt { background: var(--bg-white); }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 10px; }
        .section-title p { max-width: 640px; margin: 0 auto; color: var(--text-muted); font-size: 1.05rem; }
        .section-title .badge { margin-bottom: 12px; }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid; gap: 28px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        }
        .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
        .card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

        /* ===== Card ===== */
        .card {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--border-color);
            display: flex; flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .card-img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .card-body p { font-size: 0.95rem; color: var(--text-muted); flex: 1; }
        .card-body .card-meta { display: flex; gap: 12px; font-size: 0.85rem; color: var(--text-muted); margin-top: 12px; }
        .card-body .card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
        .card-body .card-tags span {
            padding: 2px 12px; border-radius: 50px; font-size: 0.75rem;
            background: var(--bg-light); color: var(--text-muted); font-weight: 500;
        }
        .card-link { text-decoration: none; color: inherit; display: block; }

        /* ===== Guide List ===== */
        .guide-list { display: flex; flex-direction: column; gap: 20px; }
        .guide-item {
            display: flex; gap: 20px; align-items: flex-start; padding: 24px 28px;
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .guide-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
        .guide-item .guide-icon {
            width: 56px; height: 56px; border-radius: 16px; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
            background: var(--bg-light); color: var(--primary);
        }
        .guide-item .guide-content { flex: 1; }
        .guide-item .guide-content h4 { font-size: 1.15rem; margin-bottom: 4px; }
        .guide-item .guide-content p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 0; }
        .guide-item .guide-step {
            font-size: 0.85rem; font-weight: 700; color: var(--primary);
            background: var(--primary-light); padding: 2px 14px; border-radius: 50px;
            display: inline-block; margin-bottom: 8px;
        }

        /* ===== FAQ ===== */
        .faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-md);
            border: 1px solid var(--border-color); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 18px 24px; font-weight: 600; font-size: 1.05rem;
            cursor: pointer; display: flex; justify-content: space-between; align-items: center;
            color: var(--text-dark); background: none; border: none; width: 100%; text-align: left;
            font-family: inherit; transition: var(--transition);
        }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark) url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            position: relative; padding: 80px 0;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(230,57,70,0.30) 100%);
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 28px; font-size: 1.1rem; }
        .cta-section .btn { margin: 0 6px; }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-item { text-align: center; padding: 24px 16px; }
        .stat-item .stat-number { font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-item .stat-label { font-size: 0.95rem; color: var(--text-muted); margin-top: 4px; }

        /* ===== Footer (shared) ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.75); padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .site-footer .footer-brand .nav-logo { margin-bottom: 14px; }
        .site-footer .footer-brand .nav-logo .logo-text { color: #fff; }
        .site-footer .footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.6); max-width: 340px; }
        .site-footer .footer-col h5 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
        .site-footer .footer-col ul li { margin-bottom: 10px; }
        .site-footer .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.92rem; }
        .site-footer .footer-col ul li a:hover { color: #fff; }
        .site-footer .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; font-size: 0.88rem; color: rgba(255,255,255,0.5);
        }
        .site-footer .footer-socials { display: flex; gap: 14px; }
        .site-footer .footer-socials a { color: rgba(255,255,255,0.5); font-size: 1.2rem; }
        .site-footer .footer-socials a:hover { color: #fff; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .page-banner { padding: 60px 0 40px; min-height: 240px; }
            .page-banner h1 { font-size: 1.9rem; }
            .page-banner p { font-size: 1rem; }
            .nav-tabs { display: none; }
            .nav-tabs.open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); padding: 16px 24px; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-md); gap: 6px; }
            .mobile-toggle { display: block; }
            .card-grid { grid-template-columns: 1fr; }
            .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: 1fr; }
            .guide-item { flex-direction: column; padding: 18px 20px; }
            .guide-item .guide-icon { width: 48px; height: 48px; font-size: 1.3rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-item .stat-number { font-size: 1.8rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .site-footer .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .cta-section h2 { font-size: 1.7rem; }
            .section { padding: 50px 0; }
            .faq-question { padding: 14px 18px; font-size: 0.95rem; }
            .faq-answer { padding: 0 18px; }
            .faq-item.open .faq-answer { padding: 0 18px 16px; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .container { padding: 0 16px; }
            .page-banner h1 { font-size: 1.6rem; }
            .nav-cta .btn { display: none; }
            .stat-item .stat-number { font-size: 1.5rem; }
            .btn { padding: 10px 24px; font-size: 0.9rem; }
        }

        /* ===== Utilities ===== */
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }
        .gap-1 { gap: 16px; }
        .gap-2 { gap: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { display: flex; flex-wrap: wrap; }
        .hidden { display: none; }