/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #d4a84b;
            --accent-light: #e8c46a;
            --accent-dark: #b88e2e;
            --bg-light: #f8f7f4;
            --bg-white: #ffffff;
            --bg-dark: #1a2a3a;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.6;
            font-size: 16px;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        img { display: block; max-width: 100%; height: auto; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

        /* ===== 容器 ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) { .container { padding: 0 16px; } }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner { display: flex; flex-direction: column; }
        .header-top {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--header-height); padding: 0 24px;
            max-width: var(--container-max); margin: 0 auto; width: 100%;
        }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; }
        .logo span { color: var(--accent); }
        .logo small { font-size: 0.75rem; font-weight: 400; color: var(--text-muted); margin-left: 4px; }
        .header-actions { display: flex; align-items: center; gap: 16px; }
        .search-box {
            display: flex; align-items: center;
            background: var(--bg-light); border-radius: 40px;
            padding: 6px 16px; border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(212,168,75,0.15); }
        .search-box input { background: transparent; border: none; padding: 6px 8px; font-size: 0.9rem; color: var(--text-primary); width: 140px; }
        .search-box input::placeholder { color: var(--text-muted); }
        .search-box button { color: var(--text-muted); padding: 4px; font-size: 1rem; transition: color var(--transition); }
        .search-box button:hover { color: var(--accent); }
        .header-cta {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--primary); color: #fff !important;
            padding: 8px 20px; border-radius: 40px;
            font-weight: 600; font-size: 0.9rem;
            transition: all var(--transition); white-space: nowrap;
        }
        .header-cta:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-md); }

        /* 频道导航 */
        .nav-channels {
            border-top: 1px solid var(--border-light);
            background: var(--bg-white);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-channels::-webkit-scrollbar { display: none; }
        .channels-list {
            display: flex; gap: 4px;
            max-width: var(--container-max); margin: 0 auto;
            padding: 0 24px; height: 44px; align-items: center;
        }
        .channel-item { flex-shrink: 0; }
        .channel-link {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 6px 18px; border-radius: 30px;
            font-size: 0.88rem; font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .channel-link:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
        .channel-link.active { color: #fff; background: var(--primary); font-weight: 600; box-shadow: var(--shadow-sm); }
        .channel-link i { font-size: 0.8rem; }

        /* 移动端菜单按钮 */
        .mobile-menu-btn { display: none; font-size: 1.4rem; color: var(--text-primary); padding: 4px; }
        @media (max-width: 768px) {
            .header-top { padding: 0 16px; }
            .search-box input { width: 80px; }
            .header-cta span { display: none; }
            .header-cta { padding: 8px 14px; }
            .channels-list { padding: 0 16px; gap: 2px; }
            .channel-link { padding: 6px 14px; font-size: 0.82rem; }
        }
        @media (max-width: 520px) {
            .logo { font-size: 1.2rem; }
            .search-box { display: none; }
            .mobile-menu-btn { display: block; }
            .header-cta { padding: 6px 12px; font-size: 0.82rem; }
            .channels-list { height: 40px; }
            .channel-link { padding: 4px 12px; font-size: 0.78rem; }
        }

        /* ===== Hero区域 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex; align-items: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover; background-position: center;
            opacity: 0.2; mix-blend-mode: overlay;
        }
        .hero-wave {
            position: absolute; bottom: -2px; left: 0; right: 0;
            height: 120px; background: var(--bg-light);
            clip-path: ellipse(70% 100% at 50% 100%);
        }
        .hero-content { position: relative; z-index: 2; padding: 80px 0 100px; max-width: 720px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,0.12); backdrop-filter: blur(6px);
            padding: 6px 18px; border-radius: 40px;
            color: var(--text-inverse); font-size: 0.85rem; font-weight: 500;
            border: 1px solid rgba(255,255,255,0.15); margin-bottom: 28px;
        }
        .hero h1 { font-size: 3.2rem; font-weight: 800; color: #fff; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 24px; }
        .hero h1 .highlight { color: var(--accent); }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.85); line-height: 1.7; margin-bottom: 36px; max-width: 600px; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--accent); color: var(--primary-dark) !important;
            padding: 14px 32px; border-radius: 40px;
            font-weight: 700; font-size: 1.05rem;
            transition: all var(--transition); box-shadow: 0 4px 20px rgba(212,168,75,0.35);
        }
        .hero-btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,168,75,0.45); }
        .hero-btn-secondary {
            display: inline-flex; align-items: center; gap: 10px;
            background: rgba(255,255,255,0.1); color: #fff !important;
            padding: 14px 32px; border-radius: 40px;
            font-weight: 600; font-size: 1.05rem;
            border: 1.5px solid rgba(255,255,255,0.25);
            transition: all var(--transition);
        }
        .hero-btn-secondary:hover { background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.4); }
        .hero-stats {
            display: flex; gap: 40px; margin-top: 48px;
            padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.15);
        }
        .hero-stat { text-align: left; }
        .hero-stat-num { font-size: 2rem; font-weight: 800; color: #fff; line-height: 1; }
        .hero-stat-num span { color: var(--accent); }
        .hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

        @media (max-width: 768px) {
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat-num { font-size: 1.6rem; }
            .hero-content { padding: 60px 0 80px; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.92rem; }
            .hero-actions { flex-direction: column; }
            .hero-btn-primary, .hero-btn-secondary { justify-content: center; padding: 12px 24px; }
            .hero-stats { gap: 16px; }
            .hero-stat { flex: 1; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-white); }
        .section-dark { background: var(--bg-dark); color: var(--text-inverse); }
        .section-header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
        .section-header h2 { font-size: 2.2rem; font-weight: 800; color: var(--text-primary); margin-bottom: 16px; letter-spacing: -0.01em; }
        .section-dark .section-header h2 { color: #fff; }
        .section-header p { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7; }
        .section-dark .section-header p { color: rgba(255,255,255,0.75); }
        .section-label {
            display: inline-block;
            background: rgba(212,168,75,0.12); color: var(--accent-dark);
            padding: 4px 16px; border-radius: 40px;
            font-size: 0.82rem; font-weight: 600; letter-spacing: 0.02em;
            margin-bottom: 12px;
        }
        .section-dark .section-label { background: rgba(212,168,75,0.2); color: var(--accent-light); }

        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 40px; }
            .section-header h2 { font-size: 1.7rem; }
        }
        @media (max-width: 520px) {
            .section { padding: 40px 0; }
            .section-header h2 { font-size: 1.4rem; }
        }

        /* ===== 卡片网格 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .grid-2 { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .grid-3 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .card-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 18px; color: #fff; }
        .card-icon.blue { background: var(--primary); }
        .card-icon.gold { background: var(--accent); }
        .card-icon.teal { background: #0d9488; }
        .card-icon.rose { background: #e11d48; }
        .card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
        .card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.65; }
        .card-tag {
            display: inline-block;
            background: rgba(26,58,92,0.08); color: var(--primary);
            padding: 2px 12px; border-radius: 20px;
            font-size: 0.75rem; font-weight: 600;
            margin-bottom: 12px;
        }
        .card-cover {
            border-radius: var(--radius) var(--radius) 0 0;
            overflow: hidden; margin: -28px -28px 20px -28px;
            height: 180px; background: var(--border-light);
        }
        .card-cover img { width: 100%; height: 100%; object-fit: cover; }

        /* ===== 特色板块（图文交错） ===== */
        .feature-row {
            display: grid; grid-template-columns: 1fr 1fr;
            gap: 60px; align-items: center;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--border-light);
        }
        .feature-image img { width: 100%; height: 420px; object-fit: cover; }
        .feature-content h3 { font-size: 1.8rem; font-weight: 800; margin-bottom: 20px; }
        .feature-content p { font-size: 1rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
        .feature-list { display: flex; flex-direction: column; gap: 12px; }
        .feature-list-item { display: flex; align-items: flex-start; gap: 12px; }
        .feature-list-item i { color: var(--accent); font-size: 1.1rem; margin-top: 3px; flex-shrink: 0; }
        @media (max-width: 1024px) {
            .feature-row { gap: 40px; }
            .feature-image img { height: 320px; }
        }
        @media (max-width: 768px) {
            .feature-row { grid-template-columns: 1fr; gap: 32px; }
            .feature-image { order: -1; }
            .feature-image img { height: 240px; }
            .feature-content h3 { font-size: 1.4rem; }
        }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
        .step-item { text-align: center; position: relative; padding: 0 12px; }
        .step-item::after {
            content: ''; position: absolute; top: 32px; right: -10px;
            width: 20px; height: 2px; background: var(--border);
        }
        .step-item:last-child::after { display: none; }
        .step-num {
            width: 64px; height: 64px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px; font-size: 1.4rem; font-weight: 800;
            background: var(--primary); color: #fff;
            box-shadow: 0 4px 16px rgba(26,58,92,0.2);
        }
        .step-item h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .step-item p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }
        @media (max-width: 768px) {
            .steps { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
            .step-item::after { display: none; }
        }
        @media (max-width: 520px) {
            .steps { grid-template-columns: 1fr; gap: 28px; }
            .step-num { width: 52px; height: 52px; font-size: 1.2rem; }
        }

        /* ===== 资讯列表（CMS） ===== */
        .post-list { display: flex; flex-direction: column; gap: 16px; }
        .post-item {
            display: flex; align-items: center; gap: 20px;
            background: var(--bg-white); padding: 20px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .post-item:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateX(4px); }
        .post-cat {
            flex-shrink: 0;
            background: rgba(212,168,75,0.12); color: var(--accent-dark);
            padding: 4px 14px; border-radius: 20px;
            font-size: 0.78rem; font-weight: 600;
        }
        .post-title { flex: 1; font-size: 1rem; font-weight: 600; color: var(--text-primary); }
        .post-title a { color: inherit; }
        .post-title a:hover { color: var(--primary-light); }
        .post-date { flex-shrink: 0; font-size: 0.82rem; color: var(--text-muted); white-space: nowrap; }
        @media (max-width: 640px) {
            .post-item { flex-wrap: wrap; gap: 10px; padding: 16px; }
            .post-cat { font-size: 0.72rem; padding: 2px 10px; }
            .post-title { font-size: 0.9rem; width: 100%; order: 3; }
            .post-date { font-size: 0.75rem; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600; font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(212,168,75,0.04); }
        .faq-question i { color: var(--text-muted); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem; color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 0; text-align: center;
            position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover; background-position: center;
            opacity: 0.08; mix-blend-mode: overlay;
        }
        .cta-content { position: relative; z-index: 2; max-width: 600px; margin: 0 auto; }
        .cta-content h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 1.05rem; color: rgba(255,255,255,0.85); margin-bottom: 32px; }
        .cta-btn {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--accent); color: var(--primary-dark) !important;
            padding: 16px 40px; border-radius: 40px;
            font-weight: 700; font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 24px rgba(212,168,75,0.35);
        }
        .cta-btn:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 36px rgba(212,168,75,0.45); }
        @media (max-width: 768px) {
            .cta-section { padding: 52px 0; }
            .cta-content h2 { font-size: 1.6rem; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 32px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 12px; display: block; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 300px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col a { font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: color var(--transition); }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            margin-top: 40px; padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.85rem; color: rgba(255,255,255,0.5);
        }
        .footer-social { display: flex; gap: 16px; }
        .footer-social a { color: rgba(255,255,255,0.5); font-size: 1.2rem; transition: color var(--transition); }
        .footer-social a:hover { color: var(--accent); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
        }

        /* ===== 辅助工具 ===== */
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 12px; }
        .gap-4 { gap: 16px; }
        .mt-8 { margin-top: 32px; }
        .mb-8 { margin-bottom: 32px; }
        .text-center { text-align: center; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 徽章/标签 ===== */
        .badge {
            display: inline-flex; align-items: center; gap: 4px;
            background: rgba(26,58,92,0.08); color: var(--primary);
            padding: 2px 12px; border-radius: 30px;
            font-size: 0.78rem; font-weight: 600;
        }
        .badge-gold { background: rgba(212,168,75,0.12); color: var(--accent-dark); }

        /* ===== 统计数字块 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            text-align: center; padding: 28px 16px;
            background: var(--bg-white); border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .stat-card .num { font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1; }
        .stat-card .num span { color: var(--accent); }
        .stat-card .label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 8px; }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .stat-card .num { font-size: 1.8rem; }
        }

        /* ===== 分割线 ===== */
        .divider { width: 60px; height: 3px; background: var(--accent); border-radius: 4px; margin: 0 auto 20px; }

        /* ===== 无障碍焦点 ===== */
        a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

        /* ===== Skeleton加载占位 ===== */
        .skeleton { background: linear-gradient(90deg, var(--border-light) 25%, #e8ecf0 50%, var(--border-light) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: 6px; }
        @keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

/* roulang page: article */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #d4a843;
            --accent-light: #e8c87a;
            --accent-dark: #b8922e;
            --bg-warm: #f8f6f2;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #5a6a7a;
            --text-light: #8a9aaa;
            --border-light: #e8e4de;
            --shadow-sm: 0 2px 8px rgba(26,58,92,0.06);
            --shadow-md: 0 8px 28px rgba(26,58,92,0.10);
            --shadow-lg: 0 20px 48px rgba(26,58,92,0.14);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --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; -webkit-font-smoothing: antialiased; }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-warm);
            color: var(--text-dark);
            line-height: 1.7;
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }

        /* header & nav */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(26,58,92,0.04);
            backdrop-filter: blur(8px);
            background: rgba(255,255,255,0.96);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 8px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .logo span { color: var(--accent); font-weight: 800; }
        .logo i { color: var(--accent); font-size: 1.3rem; margin-right: 6px; }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-warm);
            border: 1px solid var(--border-light);
            border-radius: 40px;
            padding: 4px 16px 4px 18px;
            transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(212,168,67,0.15); }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-dark);
            outline: none;
            width: 160px;
        }
        .search-box input::placeholder { color: var(--text-light); }
        .search-box button {
            border: none;
            background: transparent;
            color: var(--text-muted);
            cursor: pointer;
            font-size: 1rem;
            padding: 4px 0 4px 10px;
            transition: var(--transition);
        }
        .search-box button:hover { color: var(--accent); }
        .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-cta:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(212,168,67,0.35); color: var(--primary-dark); }
        .btn-cta i { font-size: 0.85rem; }
        .nav-channels {
            padding: 6px 0 10px;
            border-top: 1px solid var(--border-light);
        }
        .channels-list {
            display: flex;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 2px 0;
        }
        .channels-list::-webkit-scrollbar { display: none; }
        .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            background: transparent;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .channel-link i { font-size: 0.85rem; }
        .channel-link:hover { background: rgba(26,58,92,0.06); color: var(--primary); }
        .channel-link.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(26,58,92,0.18);
        }
        .channel-link.active i { color: var(--accent); }

        /* article hero */
        .article-hero {
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 200px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero .container-narrow {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.85); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb span { color: var(--accent); }
        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            letter-spacing: -0.4px;
            max-width: 800px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            margin-top: 18px;
            color: rgba(255,255,255,0.8);
            font-size: 0.9rem;
        }
        .article-meta i { margin-right: 6px; color: var(--accent); }
        .article-meta .cat-badge {
            background: rgba(212,168,67,0.2);
            color: var(--accent-light);
            padding: 2px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* article body */
        .article-body-wrap {
            padding: 50px 0 60px;
            background: var(--bg-warm);
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 48px 52px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-dark);
        }
        .article-content h2 { font-size: 1.6rem; margin: 36px 0 16px; color: var(--primary); font-weight: 700; }
        .article-content h3 { font-size: 1.25rem; margin: 28px 0 12px; color: var(--primary-light); font-weight: 600; }
        .article-content p { margin-bottom: 18px; }
        .article-content ul, .article-content ol { margin: 12px 0 18px 24px; }
        .article-content li { margin-bottom: 8px; }
        .article-content a { color: var(--accent-dark); border-bottom: 1px solid transparent; }
        .article-content a:hover { border-bottom-color: var(--accent); }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 20px 0;
            background: rgba(212,168,67,0.06);
            border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
            font-style: italic;
            color: var(--text-muted);
        }
        .article-content img { margin: 24px 0; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
        .article-content .wp-caption { text-align: center; font-size: 0.88rem; color: var(--text-light); margin-bottom: 20px; }
        .article-content pre {
            background: var(--primary-dark);
            color: #e8e4de;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 20px 0;
        }
        .article-content code { font-family: 'JetBrains Mono', monospace; font-size: 0.9em; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            background: var(--bg-warm);
            color: var(--text-muted);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--accent); color: var(--primary-dark); }
        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-light);
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-nav-links a {
            color: var(--primary-light);
            font-weight: 500;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .article-nav-links a:hover { color: var(--accent-dark); }

        /* not found */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }
        .not-found-box i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.6rem; color: var(--primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 500;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--primary-light); transform: translateY(-1px); }

        /* related section */
        .related-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            padding: 50px 0 60px;
        }
        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section h2 i { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-warm);
            border-radius: var(--radius-sm);
            padding: 24px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
        .related-card h3 { font-size: 1.05rem; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
        .related-card h3 a { color: inherit; }
        .related-card h3 a:hover { color: var(--accent-dark); }
        .related-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
        .related-card .meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 16px; }

        /* sidebar / floating */
        .article-sidebar-section {
            padding: 30px 0 10px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            border: 1px solid var(--border-light);
            margin-bottom: 20px;
        }
        .sidebar-card h4 { font-size: 1rem; font-weight: 600; color: var(--primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
        .sidebar-card h4 i { color: var(--accent); }
        .sidebar-card ul { list-style: none; padding: 0; }
        .sidebar-card li { padding: 6px 0; border-bottom: 1px solid var(--border-light); }
        .sidebar-card li:last-child { border-bottom: none; }
        .sidebar-card li a { color: var(--text-muted); font-size: 0.9rem; }
        .sidebar-card li a:hover { color: var(--accent-dark); padding-left: 4px; }

        /* footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.85);
            padding: 56px 0 32px;
        }
        .site-footer .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 14px; display: inline-block; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.3px; }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col li { margin-bottom: 10px; }
        .footer-col a { color: rgba(255,255,255,0.6); font-size: 0.88rem; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a { color: rgba(255,255,255,0.5); font-size: 1.1rem; transition: var(--transition); }
        .footer-social a:hover { color: var(--accent); transform: scale(1.1); }

        /* responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-content { padding: 36px 32px; }
        }
        @media (max-width: 768px) {
            .header-top { flex-direction: column; align-items: stretch; gap: 10px; }
            .header-actions { justify-content: space-between; }
            .search-box input { width: 120px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-content { padding: 28px 20px; font-size: 1rem; }
            .article-meta { gap: 10px 18px; font-size: 0.82rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 1.35rem; }
            .article-content { padding: 20px 16px; }
            .channels-list { gap: 2px; }
            .channel-link { padding: 6px 14px; font-size: 0.82rem; }
            .search-box input { width: 80px; }
            .btn-cta { padding: 6px 16px; font-size: 0.82rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-lighter: #e8f0fe;
            --accent: #d4a84b;
            --accent-light: #f0d080;
            --accent-dark: #b8912e;
            --bg-warm: #faf8f5;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border-light: #e5e7eb;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            background: var(--bg-warm);
            color: var(--text-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        .container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }
        
        /* header */
        .site-header {
            background: #fff;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            flex-wrap: wrap;
            gap: 10px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--primary);
        }
        .logo span { color: var(--accent); }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-warm);
            border: 1px solid var(--border-light);
            border-radius: 40px;
            padding: 6px 16px;
            transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(212,168,75,0.15); }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            padding: 4px 8px 4px 0;
            min-width: 120px;
            color: var(--text-dark);
        }
        .search-box input::placeholder { color: var(--text-light); }
        .search-box button {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            font-size: 1rem;
            padding: 4px;
        }
        .btn-cta-nav {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 8px 20px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-cta-nav:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .nav-channels {
            border-top: 1px solid var(--border-light);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-channels::-webkit-scrollbar { display: none; }
        .channels-list {
            display: flex;
            gap: 4px;
            flex-wrap: nowrap;
            min-width: max-content;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
            background: transparent;
        }
        .channel-link i { font-size: 0.9rem; }
        .channel-link:hover { color: var(--primary); background: var(--primary-lighter); }
        .channel-link.active { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }

        /* hero */
        .hero-category {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0f1a2e 0%, #1a3a5c 50%, #2a5a8c 100%);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg-warm);
            clip-path: ellipse(70% 100% at 50% 100%);
        }
        .hero-category .container { position: relative; z-index: 2; }
        .hero-category h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            max-width: 720px;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-category h1 span { color: var(--accent); }
        .hero-category p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,75,0.3); }
        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .hero-actions .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

        /* section */
        .section { padding: 80px 0; }
        .section-alt { background: #fff; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }

        /* cards grid */
        .grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 18px;
            background: var(--primary);
        }
        .card-icon.gold { background: var(--accent); }
        .card-icon.teal { background: #0d9488; }
        .card-icon.rose { background: #e11d48; }
        .card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; color: var(--text-dark); }
        .card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

        /* step flow */
        .steps { display: flex; gap: 24px; counter-reset: step; flex-wrap: wrap; justify-content: center; }
        .step-item {
            flex: 1;
            min-width: 180px;
            max-width: 260px;
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }
        .step-item h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
        .step-item p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

        /* feature row */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-row.reverse { direction: rtl; }
        .feature-row.reverse > * { direction: ltr; }
        .feature-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--primary-lighter);
        }
        .feature-img img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }
        .feature-content h2 { font-size: 1.8rem; font-weight: 700; color: var(--primary); margin-bottom: 16px; line-height: 1.3; }
        .feature-content p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 20px; }
        .feature-list { list-style: none; padding: 0; }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            color: var(--text-dark);
            font-size: 0.95rem;
        }
        .feature-list li i { color: var(--accent); margin-top: 3px; flex-shrink: 0; }

        /* audience tags */
        .audience-tags { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
        .audience-tag {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 40px;
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .audience-tag:hover { border-color: var(--accent); color: var(--accent-dark); box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .audience-tag i { margin-right: 6px; color: var(--accent); }

        /* faq */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: #fff;
            transition: var(--transition);
            user-select: none;
        }
        .faq-q:hover { background: var(--primary-lighter); }
        .faq-q i { color: var(--accent); transition: var(--transition); font-size: 0.85rem; }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-a {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-a { display: block; }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, #0f1a2e 0%, #1a3a5c 50%, #2a5a8c 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 560px; margin: 0 auto 28px; line-height: 1.8; }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 16px 44px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,168,75,0.3); }

        /* footer */
        .site-footer {
            background: #0f1a2e;
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; margin-top: 14px; color: rgba(255,255,255,0.55); max-width: 300px; }
        .footer-col h4 { color: #fff; font-weight: 600; font-size: 0.95rem; margin-bottom: 16px; letter-spacing: 0.3px; }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: 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: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-social { display: flex; gap: 16px; }
        .footer-social a { color: rgba(255,255,255,0.4); font-size: 1.2rem; transition: var(--transition); }
        .footer-social a:hover { color: var(--accent); transform: translateY(-2px); }

        /* responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .grid-4 { grid-template-columns: repeat(2,1fr); }
        }
        @media (max-width: 768px) {
            .hero-category { padding: 70px 0 60px; min-height: auto; }
            .hero-category h1 { font-size: 2.2rem; }
            .hero-category p { font-size: 1rem; }
            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .grid-3 { grid-template-columns: 1fr 1fr; gap: 20px; }
            .grid-2 { grid-template-columns: 1fr; gap: 24px; }
            .feature-row { grid-template-columns: 1fr; gap: 28px; }
            .feature-row.reverse { direction: ltr; }
            .steps { flex-direction: column; align-items: center; }
            .step-item { max-width: 100%; width: 100%; }
            .header-top { flex-direction: column; align-items: stretch; gap: 8px; }
            .header-actions { justify-content: space-between; }
            .search-box input { min-width: 80px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .grid-4 { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-category h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline { text-align: center; }
            .grid-3 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .channel-link { padding: 6px 14px; font-size: 0.8rem; }
            .section-title { font-size: 1.4rem; }
            .card { padding: 24px 18px; }
            .feature-content h2 { font-size: 1.4rem; }
        }