/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f0f1a;
            --primary-light: #1a1a2e;
            --primary-dark: #080810;
            --accent: #f5c518;
            --accent-hover: #e0b214;
            --accent-glow: rgba(245, 197, 24, 0.25);
            --secondary: #e94560;
            --secondary-hover: #d63850;
            --bg-dark: #0a0a15;
            --bg-card: #12122a;
            --bg-section: #0d0d20;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #6e6e8a;
            --border-color: rgba(245, 197, 24, 0.15);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(245, 197, 24, 0.05);
            --shadow-glow: 0 0 40px rgba(245, 197, 24, 0.08);
            --shadow-btn: 0 4px 20px rgba(245, 197, 24, 0.25);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 5rem;
            --max-width: 1200px;
        }

        /* ===== 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-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }
        h1 { font-size: clamp(2.2rem, 6vw, 4rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        p { color: var(--text-secondary); margin-bottom: 1rem; }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
        section { padding: var(--spacing-section) 0; position: relative; }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { margin-bottom: 0.75rem; position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--accent);
            margin: 0.75rem auto 0;
            border-radius: 4px;
        }
        .section-title p { max-width: 600px; margin: 0 auto; font-size: 1.05rem; color: var(--text-muted); }
        .text-accent { color: var(--accent); }
        .text-secondary { color: var(--text-secondary); }

        /* ===== 顶部导航 (桌面) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 21, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            height: 68px;
        }
        .site-header.scrolled { background: rgba(8, 8, 16, 0.96); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i { color: var(--accent); font-size: 1.4rem; }
        .logo span { background: linear-gradient(135deg, var(--accent), #ffd700); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.9; }
        .nav-desktop { display: flex; align-items: center; gap: 0.25rem; }
        .nav-desktop a {
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover, .nav-desktop a.active { color: var(--accent); background: rgba(245, 197, 24, 0.08); }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary) !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 700 !important;
            margin-left: 0.75rem;
        }
        .nav-cta:hover { background: var(--accent-hover) !important; color: var(--primary) !important; transform: translateY(-1px); box-shadow: var(--shadow-btn); }
        .nav-cta::after { display: none !important; }

        /* ===== 移动端底部 Tab 导航 ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(10, 10, 21, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-light);
            padding: 0.35rem 0 env(safe-area-inset-bottom, 0.35rem) 0;
            justify-content: space-around;
            box-shadow: 0 -4px 30px rgba(0,0,0,0.4);
        }
        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.2rem;
            padding: 0.4rem 0.6rem;
            color: var(--text-muted);
            font-size: 0.65rem;
            font-weight: 500;
            transition: var(--transition);
            min-width: 56px;
            border-radius: var(--radius-sm);
        }
        .mobile-bottom-nav a i { font-size: 1.2rem; transition: var(--transition); }
        .mobile-bottom-nav a span { line-height: 1.2; }
        .mobile-bottom-nav a:hover, .mobile-bottom-nav a.active { color: var(--accent); }
        .mobile-bottom-nav a.active i { transform: translateY(-2px); }
        .mobile-bottom-nav .nav-cta-mobile {
            color: var(--accent);
        }
        .mobile-bottom-nav .nav-cta-mobile i { background: var(--accent); color: var(--primary); border-radius: 50%; padding: 6px; font-size: 1.1rem; }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            padding: 8rem 0 4rem;
            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: 0.35;
            z-index: 0;
            transform: scale(1.02);
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,10,21,0.88) 0%, rgba(10,10,21,0.60) 50%, rgba(10,10,21,0.88) 100%);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245,197,24,0.06) 0%, transparent 70%);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 780px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(245, 197, 24, 0.12);
            border: 1px solid rgba(245, 197, 24, 0.2);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 1.5rem;
            letter-spacing: 0.3px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-content h1 {
            font-size: clamp(2.5rem, 7vw, 4.6rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 1rem;
            background: linear-gradient(180deg, #fff 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content h1 .highlight { background: linear-gradient(135deg, var(--accent), #ffd700); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-sub {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 2.2rem;
            line-height: 1.7;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: var(--primary);
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover { background: var(--accent-hover); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(245,197,24,0.35); }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: transparent;
            color: var(--text-primary);
            padding: 0.8rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: rgba(245,197,24,0.06); transform: translateY(-2px); }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .hero-stat h3 { font-size: 1.8rem; color: var(--accent); font-weight: 800; }
        .hero-stat p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

        /* ===== 通用板块 ===== */
        .section-dark { background: var(--bg-section); }
        .section-light { background: var(--bg-card); }

        /* ===== 核心优势卡片 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover { transform: translateY(-4px); border-color: rgba(245,197,24,0.2); box-shadow: var(--shadow-card); }
        .card-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); background: rgba(245,197,24,0.1); display: flex; align-items: center; justify-content: center; margin-bottom: 1.2rem; font-size: 1.4rem; color: var(--accent); }
        .card h3 { margin-bottom: 0.6rem; font-size: 1.15rem; }
        .card p { font-size: 0.92rem; color: var(--text-muted); margin: 0; }

        /* ===== 图文区块 ===== */
        .feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
        .feature-block.reverse { direction: rtl; }
        .feature-block.reverse > * { direction: ltr; }
        .feature-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); position: relative; aspect-ratio: 4/3; }
        .feature-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .feature-image:hover img { transform: scale(1.04); }
        .feature-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, transparent 50%, rgba(245,197,24,0.06));
            pointer-events: none;
        }
        .feature-text h2 { margin-bottom: 1rem; }
        .feature-text p { margin-bottom: 1.2rem; color: var(--text-secondary); }
        .feature-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.2rem; }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            background: rgba(245,197,24,0.08);
            border: 1px solid rgba(245,197,24,0.12);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/9;
            display: flex;
            align-items: flex-end;
            cursor: pointer;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            background: var(--bg-card);
        }
        .category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.5; transition: var(--transition); }
        .category-card:hover img { opacity: 0.7; transform: scale(1.06); }
        .category-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10,10,21,0.92) 0%, transparent 60%);
            z-index: 1;
        }
        .category-card .cat-content { position: relative; z-index: 2; padding: 1.5rem; width: 100%; }
        .category-card .cat-content h3 { font-size: 1.1rem; margin-bottom: 0.25rem; color: #fff; }
        .category-card .cat-content p { font-size: 0.82rem; color: var(--text-muted); margin: 0; }
        .category-card:hover { border-color: rgba(245,197,24,0.3); transform: translateY(-4px); box-shadow: var(--shadow-card); }

        /* ===== 最新资讯列表 ===== */
        .news-list { display: grid; grid-template-columns: 1fr; gap: 1rem; }
        .news-item {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            background: var(--bg-card);
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-item:hover { border-color: rgba(245,197,24,0.15); transform: translateX(4px); }
        .news-item .badge {
            flex-shrink: 0;
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            background: rgba(245,197,24,0.1);
            color: var(--accent);
            font-size: 0.72rem;
            font-weight: 600;
        }
        .news-item .title { flex: 1; font-weight: 500; color: var(--text-primary); font-size: 0.95rem; }
        .news-item .title:hover { color: var(--accent); }
        .news-item .meta { flex-shrink: 0; font-size: 0.78rem; color: var(--text-muted); display: flex; align-items: center; gap: 0.5rem; }
        .news-empty { text-align: center; padding: 3rem; color: var(--text-muted); background: var(--bg-card); border-radius: var(--radius-md); border: 1px dashed var(--border-light); }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
        .stat-card {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 1rem;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-card:hover { transform: translateY(-4px); border-color: rgba(245,197,24,0.15); }
        .stat-card .number { font-size: 2.4rem; font-weight: 900; color: var(--accent); line-height: 1.2; }
        .stat-card .label { font-size: 0.88rem; color: var(--text-muted); margin-top: 0.3rem; }
        .stat-card .icon { font-size: 1.6rem; color: var(--accent); margin-bottom: 0.5rem; opacity: 0.5; }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; position: relative; }
        .steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: calc(12.5% + 1rem);
            right: calc(12.5% + 1rem);
            height: 2px;
            background: linear-gradient(90deg, var(--accent), rgba(245,197,24,0.2));
            z-index: 0;
        }
        .step { text-align: center; position: relative; z-index: 1; }
        .step-num {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            transition: var(--transition);
        }
        .step:hover .step-num { background: var(--accent); color: var(--primary); box-shadow: 0 0 30px var(--accent-glow); }
        .step h4 { margin-bottom: 0.4rem; font-size: 1.05rem; }
        .step p { font-size: 0.85rem; color: var(--text-muted); margin: 0; max-width: 200px; margin: 0 auto; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.75rem; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(245,197,24,0.12); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.98rem;
            gap: 1rem;
            user-select: none;
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.85rem; flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.5rem;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 1.5rem 1.2rem; }
        .faq-answer p { font-size: 0.9rem; color: var(--text-muted); margin: 0; line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-card);
            text-align: center;
            padding: 4rem 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .cta-section h2 { margin-bottom: 0.75rem; }
        .cta-section p { max-width: 500px; margin: 0 auto 2rem; color: var(--text-muted); }
        .cta-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-light);
            padding: 3rem 0 2rem;
        }
        .footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
        .footer-brand .logo { font-size: 1.2rem; margin-bottom: 0.75rem; }
        .footer-brand p { font-size: 0.85rem; color: var(--text-muted); max-width: 280px; }
        .footer-col h4 { font-size: 0.92rem; margin-bottom: 1rem; color: var(--text-primary); }
        .footer-col a { display: block; font-size: 0.85rem; color: var(--text-muted); padding: 0.3rem 0; }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: 0.75rem; }
        .footer-social a { width: 36px; height: 36px; border-radius: 50%; background: var(--bg-card); display: flex; align-items: center; justify-content: center; color: var(--text-muted); border: 1px solid var(--border-light); }
        .footer-social a:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .steps { grid-template-columns: repeat(2, 1fr); }
            .steps::before { display: none; }
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --spacing-section: 3rem; }
            .nav-desktop { display: none; }
            .mobile-bottom-nav { display: flex; }
            .site-header { height: 60px; }
            .header-inner { height: 60px; }
            body { padding-bottom: 62px; }
            .hero { min-height: 90vh; padding: 6rem 0 3rem; }
            .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: 1fr 1fr; }
            .feature-block { grid-template-columns: 1fr; gap: 2rem; }
            .feature-block.reverse { direction: ltr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps { grid-template-columns: 1fr 1fr; gap: 2rem 1rem; }
            .step p { max-width: 100%; }
            .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat h3 { font-size: 1.4rem; }
            .news-item { flex-wrap: wrap; gap: 0.6rem; }
            .news-item .meta { width: 100%; justify-content: flex-start; }
        }
        @media (max-width: 520px) {
            .category-grid { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .hero-content h1 { font-size: clamp(1.8rem, 8vw, 2.8rem); }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .btn-primary, .btn-secondary { justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
            .stat-card { padding: 1.2rem 0.8rem; }
            .stat-card .number { font-size: 1.6rem; }
            .steps { grid-template-columns: 1fr; }
            .section-title h2 { font-size: 1.4rem; }
            .logo { font-size: 1.05rem; }
            .mobile-bottom-nav a { font-size: 0.6rem; min-width: 48px; }
            .mobile-bottom-nav a i { font-size: 1rem; }
        }

        /* ===== 辅助 ===== */
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .text-center { text-align: center; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .gap-1 { gap: 1rem; }
        .w-full { width: 100%; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== 页面内部 banner ===== */
        .page-banner {
            padding: 8rem 0 3rem;
            position: relative;
            background: var(--primary-dark);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner .bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .page-banner .bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,10,21,0.92) 0%, rgba(10,10,21,0.6) 100%);
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 0.5rem; }
        .page-banner p { font-size: 1rem; color: var(--text-muted); max-width: 600px; }
        .breadcrumb { display: flex; gap: 0.5rem; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1rem; flex-wrap: wrap; }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .sep { color: var(--text-muted); opacity: 0.4; }

        /* ===== 文章正文 ===== */
        .article-content { max-width: 800px; margin: 0 auto; }
        .article-content .meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            padding: 1rem 0 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .article-content .meta-bar i { margin-right: 0.3rem; color: var(--accent); }
        .article-body { font-size: 1.05rem; line-height: 1.9; color: var(--text-secondary); }
        .article-body p { margin-bottom: 1.2rem; }
        .article-body h2, .article-body h3 { color: var(--text-primary); margin-top: 2rem; margin-bottom: 0.8rem; }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5rem 0; }
        .article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: 1.2rem; color: var(--text-secondary); }
        .article-body li { margin-bottom: 0.4rem; list-style: disc; }
        .article-body a { color: var(--accent); text-decoration: underline; }
        .article-body a:hover { color: var(--accent-hover); }
        .article-not-found { text-align: center; padding: 4rem 2rem; background: var(--bg-card); border-radius: var(--radius-md); border: 1px dashed var(--border-light); }
        .article-not-found h2 { color: var(--text-muted); margin-bottom: 1rem; }
        .article-not-found p { color: var(--text-muted); }
        .article-not-found a { color: var(--accent); }

        /* ===== 推荐卡片（文章页） ===== */
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); border-color: rgba(245,197,24,0.2); box-shadow: var(--shadow-card); }
        .related-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .related-card .body { padding: 1.2rem; }
        .related-card .body h4 { font-size: 0.95rem; margin-bottom: 0.4rem; }
        .related-card .body p { font-size: 0.82rem; color: var(--text-muted); margin: 0; }

        /* ===== 分类页面列表 ===== */
        .cat-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .cat-list-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .cat-list-item:hover { transform: translateY(-4px); border-color: rgba(245,197,24,0.2); box-shadow: var(--shadow-card); }
        .cat-list-item img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
        .cat-list-item .body { padding: 1.2rem 1.5rem 1.5rem; }
        .cat-list-item .body h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .cat-list-item .body p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0.8rem; }
        .cat-list-item .body .tag-sm {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            background: rgba(245,197,24,0.08);
            color: var(--accent);
            font-size: 0.72rem;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .related-grid { grid-template-columns: 1fr 1fr; }
            .cat-list { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .cat-list { grid-template-columns: 1fr; }
            .page-banner { min-height: 240px; padding: 6rem 0 2rem; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --primary-dark: #0f0f1a;
            --accent: #e94560;
            --accent-hover: #d63850;
            --accent-glow: rgba(233, 69, 96, 0.3);
            --gold: #f5c518;
            --gold-light: #ffe066;
            --bg: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #22223a;
            --bg-section-alt: #12121f;
            --text: #f0f0f5;
            --text-muted: #9898b0;
            --text-light: #c8c8dd;
            --border: #2a2a45;
            --border-light: #3a3a5a;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-sm: 8px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 48px rgba(233, 69, 96, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --footer-bg: #0a0a14;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--gold);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--gold-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        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: 1.1rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
        }
        .section-title .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-gold {
            color: var(--gold);
        }
        .text-muted {
            color: var(--text-muted);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px var(--accent-glow);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border);
        }
        .btn-secondary:hover {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--gold), #e6b800);
            color: #1a1a2e;
            font-weight: 700;
            box-shadow: 0 4px 20px rgba(245, 197, 24, 0.3);
        }
        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(245, 197, 24, 0.4);
            color: #1a1a2e;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15, 15, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text);
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .logo i {
            color: var(--gold);
            font-size: 1.4rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-desktop a {
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.92rem;
            position: relative;
            padding: 4px 0;
            transition: var(--transition);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gold);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-desktop a:hover {
            color: var(--text);
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .nav-desktop a.active {
            color: var(--gold);
        }
        .nav-desktop a.active::after {
            width: 100%;
            background: var(--gold);
        }
        .nav-desktop .nav-cta {
            background: var(--accent);
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .nav-desktop .nav-cta::after {
            display: none;
        }
        .nav-desktop .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 28px var(--accent-glow);
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(15, 15, 26, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            border-radius: var(--radius-sm);
            text-decoration: none;
        }
        .mobile-tab-bar a i {
            font-size: 1.2rem;
        }
        .mobile-tab-bar a.active {
            color: var(--gold);
        }
        .mobile-tab-bar a.active i {
            text-shadow: 0 0 20px rgba(245, 197, 24, 0.3);
        }
        .mobile-tab-bar a:hover {
            color: var(--text-light);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            margin-top: var(--header-h);
            padding: 120px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 50%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.85) 0%, rgba(15, 15, 26, 0.6) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--gold), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 720px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .page-banner .breadcrumb a {
            color: var(--gold);
        }
        .page-banner .breadcrumb span {
            color: var(--text-muted);
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--gold);
            background: rgba(245, 197, 24, 0.1);
            margin-bottom: 16px;
            border: 1px solid rgba(245, 197, 24, 0.15);
        }
        .card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--text);
        }
        .card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .card .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 12px;
            background: rgba(233, 69, 96, 0.15);
            color: var(--accent);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--gold);
        }
        .card .card-link:hover {
            gap: 10px;
        }

        /* ===== Cover Card (with image) ===== */
        .cover-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-light);
        }
        .cover-card .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--primary-light);
        }
        .cover-card .cover-body {
            padding: 20px 22px 24px;
        }
        .cover-card .cover-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .cover-card .cover-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .cover-card .cover-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .cover-card .cover-meta .badge {
            background: rgba(233, 69, 96, 0.15);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 600;
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-hover);
        }
        .step-card::before {
            counter-increment: step;
            content: '0' counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 2.8rem;
            font-weight: 900;
            color: rgba(245, 197, 24, 0.08);
            line-height: 1;
            font-family: 'Inter', monospace;
        }
        .step-card .step-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--gold);
            background: rgba(245, 197, 24, 0.1);
            margin: 0 auto 16px;
            border: 2px solid rgba(245, 197, 24, 0.2);
        }
        .step-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: var(--transition);
            user-select: none;
            gap: 16px;
        }
        .faq-question i {
            color: var(--gold);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 20px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-light);
            transform: translateY(-2px);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Content List ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
            text-decoration: none;
        }
        .content-item:hover {
            border-color: var(--border-light);
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }
        .content-item .item-index {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(245, 197, 24, 0.1);
            color: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }
        .content-item .item-body h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--text);
        }
        .content-item .item-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .content-item .item-arrow {
            flex-shrink: 0;
            color: var(--text-muted);
            margin-left: auto;
            align-self: center;
            transition: var(--transition);
        }
        .content-item:hover .item-arrow {
            color: var(--gold);
            transform: translateX(4px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            border-top: 1px solid var(--border);
            padding: 56px 0 24px;
            margin-bottom: 60px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--border);
        }
        .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            border: 1px solid var(--border);
            padding: 0;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(245, 197, 24, 0.1);
            color: var(--gold);
            border-color: var(--gold);
            padding: 0;
            transform: translateY(-2px);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 0.82rem;
            color: var(--text-muted);
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--gold);
        }
        .footer-bottom a:hover {
            color: var(--gold-light);
        }

        /* ===== Grid Helpers ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gap-16 {
            gap: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-center {
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .section-pad {
                padding: 56px 0;
            }
            .page-banner {
                padding: 100px 0 56px;
                min-height: 280px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .nav-desktop {
                display: none;
            }
            .mobile-tab-bar {
                display: flex;
            }
            .site-footer {
                margin-bottom: 56px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .header-inner {
                padding: 0 16px;
            }
            .container {
                padding: 0 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .page-banner {
                padding: 80px 0 40px;
                min-height: 220px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner p {
                font-size: 0.9rem;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .logo span {
                font-size: 1rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-section {
                padding: 32px 18px;
                border-radius: var(--radius);
            }
            .card {
                padding: 24px 20px;
            }
            .cover-card .cover-body {
                padding: 16px 18px 20px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.92rem;
            }
            .faq-answer.open {
                padding: 0 18px 16px;
            }
            .content-item {
                padding: 16px 18px;
            }
            .mobile-tab-bar a {
                font-size: 0.65rem;
                padding: 4px 8px;
            }
            .mobile-tab-bar a i {
                font-size: 1rem;
            }
        }

        /* ===== Helper: scroll padding ===== */
        .scroll-pad {
            scroll-margin-top: calc(var(--header-h) + 20px);
        }

        /* ===== Divider ===== */
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
            margin: 12px 0;
        }

        /* ===== Tag badges ===== */
        .tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 12px;
            background: rgba(245, 197, 24, 0.12);
            color: var(--gold);
            letter-spacing: 0.3px;
        }
        .tag-accent {
            background: rgba(233, 69, 96, 0.12);
            color: var(--accent);
        }
        .tag-default {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
        }

        /* ===== Smooth fade-in on scroll (passive) ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
    :root {
        --primary: #0a1628;
        --primary-light: #132240;
        --primary-lighter: #1a2f52;
        --accent: #f0b90b;
        --accent-hover: #d4a309;
        --accent-light: #fef3d5;
        --bg-body: #f4f6fa;
        --bg-white: #ffffff;
        --bg-card: #ffffff;
        --bg-dark: #0d1b33;
        --text-dark: #1a1a2e;
        --text-body: #2d3748;
        --text-muted: #6c757d;
        --text-light: #e8edf5;
        --text-white: #ffffff;
        --border-color: #e2e8f0;
        --border-light: rgba(255,255,255,0.12);
        --shadow-sm: 0 2px 8px rgba(10,22,40,0.06);
        --shadow-md: 0 8px 30px rgba(10,22,40,0.10);
        --shadow-lg: 0 20px 60px rgba(10,22,40,0.15);
        --shadow-glow: 0 0 40px rgba(240,185,11,0.15);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --max-width: 1200px;
        --header-height: 72px;
        --tab-height: 64px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background: var(--bg-body);
        padding-top: var(--header-height);
        padding-bottom: var(--tab-height);
    }
    @media (min-width: 769px) { body { padding-bottom: 0; } }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    a { color: var(--accent); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent-hover); }
    button, input, textarea { font-family: inherit; font-size: 1rem; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text-dark); font-weight: 700; }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 768px) { .container { padding: 0 16px; } }

    /* ===== Header & Desktop Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--header-height);
        background: var(--primary);
        border-bottom: 1px solid var(--border-light);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }
    .header-inner {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--text-white);
        letter-spacing: -0.3px;
    }
    .logo i { color: var(--accent); font-size: 1.5rem; }
    .logo span { background: linear-gradient(135deg, #fff 60%, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .logo:hover { opacity: 0.9; }
    .nav-desktop { display: flex; align-items: center; gap: 8px; }
    .nav-desktop a {
        padding: 8px 18px;
        border-radius: 40px;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text-light);
        transition: var(--transition);
        position: relative;
        white-space: nowrap;
    }
    .nav-desktop a:hover { background: rgba(255,255,255,0.08); color: #fff; }
    .nav-desktop a.active { background: var(--accent); color: var(--primary); font-weight: 600; }
    .nav-desktop a.nav-cta {
        background: var(--accent);
        color: var(--primary);
        font-weight: 600;
        padding: 8px 22px;
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav-desktop a.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
    @media (max-width: 768px) { .nav-desktop { display: none; } }

    /* ===== Mobile Bottom Tab ===== */
    .mobile-tab {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--tab-height);
        background: var(--primary);
        border-top: 1px solid var(--border-light);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 0 8px;
        align-items: center;
        justify-content: space-around;
    }
    @media (max-width: 768px) { .mobile-tab { display: flex; } }
    .mobile-tab a {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        padding: 6px 12px;
        border-radius: var(--radius-sm);
        color: var(--text-muted);
        font-size: 0.65rem;
        font-weight: 500;
        transition: var(--transition);
        min-width: 64px;
    }
    .mobile-tab a i { font-size: 1.25rem; transition: var(--transition); }
    .mobile-tab a span { line-height: 1.2; }
    .mobile-tab a:hover { color: var(--text-white); background: rgba(255,255,255,0.06); }
    .mobile-tab a.active { color: var(--accent); }
    .mobile-tab a.active i { color: var(--accent); }
    .mobile-tab a.tab-cta { background: var(--accent); color: var(--primary); border-radius: 40px; padding: 6px 18px; }
    .mobile-tab a.tab-cta i { color: var(--primary); }
    .mobile-tab a.tab-cta:hover { background: var(--accent-hover); }

    /* ===== Hero (Article Banner) ===== */
    .article-hero {
        position: relative;
        min-height: 420px;
        display: flex;
        align-items: flex-end;
        background: var(--primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        overflow: hidden;
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(10,22,40,0.30) 0%, rgba(10,22,40,0.85) 70%, var(--primary) 100%);
        z-index: 1;
    }
    .article-hero .container {
        position: relative;
        z-index: 2;
        padding-top: 80px;
        padding-bottom: 48px;
    }
    .article-hero .hero-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.6);
        margin-bottom: 16px;
        flex-wrap: wrap;
    }
    .article-hero .hero-breadcrumb a { color: rgba(255,255,255,0.7); }
    .article-hero .hero-breadcrumb a:hover { color: var(--accent); }
    .article-hero .hero-breadcrumb span { color: var(--accent); }
    .article-hero .hero-category {
        display: inline-block;
        background: var(--accent);
        color: var(--primary);
        font-size: 0.75rem;
        font-weight: 600;
        padding: 4px 14px;
        border-radius: 40px;
        margin-bottom: 12px;
        letter-spacing: 0.3px;
    }
    .article-hero h1 {
        font-size: 2.6rem;
        font-weight: 800;
        color: var(--text-white);
        max-width: 820px;
        line-height: 1.2;
        margin-bottom: 16px;
        text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    }
    .article-hero .hero-meta {
        display: flex;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
        color: rgba(255,255,255,0.7);
        font-size: 0.9rem;
    }
    .article-hero .hero-meta i { margin-right: 5px; color: var(--accent); }
    .article-hero .hero-meta span { display: flex; align-items: center; }
    @media (max-width: 768px) {
        .article-hero { min-height: 320px; }
        .article-hero .container { padding-top: 48px; padding-bottom: 32px; }
        .article-hero h1 { font-size: 1.6rem; }
        .article-hero .hero-meta { gap: 12px; font-size: 0.8rem; }
    }
    @media (max-width: 520px) {
        .article-hero { min-height: 260px; }
        .article-hero h1 { font-size: 1.3rem; }
    }

    /* ===== Article Content ===== */
    .article-section { padding: 56px 0; }
    @media (max-width: 768px) { .article-section { padding: 36px 0; } }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
    }
    @media (max-width: 1024px) { .article-layout { grid-template-columns: 1fr; gap: 32px; } }

    /* Main Content */
    .article-main { min-width: 0; }
    .article-body {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        padding: 48px 40px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
    }
    @media (max-width: 768px) { .article-body { padding: 24px 20px; border-radius: var(--radius-md); } }
    .article-body .featured-image {
        width: 100%;
        border-radius: var(--radius-md);
        margin-bottom: 32px;
        object-fit: cover;
        max-height: 500px;
        box-shadow: var(--shadow-sm);
    }
    .article-body .article-text {
        font-size: 1.05rem;
        line-height: 1.85;
        color: var(--text-body);
    }
    .article-body .article-text p { margin-bottom: 1.4em; }
    .article-body .article-text h2 { font-size: 1.6rem; margin-top: 2em; margin-bottom: 0.8em; color: var(--text-dark); }
    .article-body .article-text h3 { font-size: 1.25rem; margin-top: 1.6em; margin-bottom: 0.6em; color: var(--text-dark); }
    .article-body .article-text ul, .article-body .article-text ol { margin-bottom: 1.4em; padding-left: 1.6em; list-style: disc; }
    .article-body .article-text li { margin-bottom: 0.4em; }
    .article-body .article-text a { color: var(--accent); font-weight: 500; border-bottom: 1px solid transparent; }
    .article-body .article-text a:hover { border-bottom-color: var(--accent); }
    .article-body .article-text blockquote {
        border-left: 4px solid var(--accent);
        background: var(--accent-light);
        padding: 20px 24px;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        margin: 1.6em 0;
        color: var(--text-dark);
        font-style: italic;
    }
    .article-body .article-text img {
        border-radius: var(--radius-md);
        margin: 1.6em 0;
        width: 100%;
        box-shadow: var(--shadow-sm);
    }
    @media (max-width: 768px) {
        .article-body .article-text { font-size: 0.95rem; }
        .article-body .article-text h2 { font-size: 1.3rem; }
        .article-body .article-text h3 { font-size: 1.1rem; }
    }

    /* Article Tags & Share */
    .article-tags-share {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid var(--border-color);
    }
    .article-tags {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
    }
    .article-tags i { color: var(--text-muted); font-size: 0.9rem; }
    .article-tags .tag {
        display: inline-block;
        background: var(--bg-body);
        color: var(--text-muted);
        font-size: 0.78rem;
        padding: 4px 14px;
        border-radius: 40px;
        border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .article-tags .tag:hover { background: var(--accent-light); border-color: var(--accent); color: var(--primary); }
    .article-share {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .article-share a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: var(--bg-body);
        color: var(--text-muted);
        border: 1px solid var(--border-color);
        transition: var(--transition);
        font-size: 1rem;
    }
    .article-share a:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); transform: translateY(-2px); }

    /* Sidebar */
    .article-sidebar { min-width: 0; }
    .sidebar-widget {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: 28px 24px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
        margin-bottom: 24px;
    }
    .sidebar-widget h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--accent);
    }
    .sidebar-widget ul li { margin-bottom: 10px; }
    .sidebar-widget ul li a {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-body);
        font-size: 0.9rem;
        padding: 6px 0;
        transition: var(--transition);
    }
    .sidebar-widget ul li a i { color: var(--accent); font-size: 0.75rem; width: 16px; }
    .sidebar-widget ul li a:hover { color: var(--accent); transform: translateX(4px); }
    .sidebar-cta {
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        border-radius: var(--radius-md);
        padding: 32px 24px;
        text-align: center;
        color: var(--text-white);
    }
    .sidebar-cta h4 { color: var(--accent); font-size: 1.15rem; margin-bottom: 8px; }
    .sidebar-cta p { font-size: 0.88rem; color: rgba(255,255,255,0.7); margin-bottom: 20px; }
    .sidebar-cta .btn-accent {
        display: inline-block;
        background: var(--accent);
        color: var(--primary);
        font-weight: 600;
        padding: 10px 28px;
        border-radius: 40px;
        font-size: 0.9rem;
        transition: var(--transition);
    }
    .sidebar-cta .btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-glow); }

    /* ===== CTA Section ===== */
    .cta-section {
        background: var(--primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        position: relative;
        padding: 80px 0;
        text-align: center;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10,22,40,0.88), rgba(10,22,40,0.75));
        z-index: 1;
    }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 {
        font-size: 2rem;
        color: var(--text-white);
        margin-bottom: 12px;
    }
    .cta-section p {
        color: rgba(255,255,255,0.75);
        font-size: 1.05rem;
        max-width: 620px;
        margin: 0 auto 32px;
    }
    .cta-section .btn-group {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .cta-section .btn-primary {
        background: var(--accent);
        color: var(--primary);
        font-weight: 700;
        padding: 14px 36px;
        border-radius: 50px;
        font-size: 1rem;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        transition: var(--transition);
    }
    .cta-section .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
    .cta-section .btn-outline {
        background: transparent;
        color: var(--text-white);
        font-weight: 600;
        padding: 14px 36px;
        border-radius: 50px;
        font-size: 1rem;
        border: 2px solid rgba(255,255,255,0.3);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        transition: var(--transition);
    }
    .cta-section .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(240,185,11,0.08); }
    @media (max-width: 768px) {
        .cta-section { padding: 48px 0; }
        .cta-section h2 { font-size: 1.4rem; }
        .cta-section p { font-size: 0.9rem; }
        .cta-section .btn-primary, .cta-section .btn-outline { padding: 12px 24px; font-size: 0.9rem; }
    }

    /* ===== Not Found ===== */
    .not-found-section {
        padding: 80px 0;
        text-align: center;
        min-height: 50vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .not-found-section .nf-icon { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
    .not-found-section h2 { font-size: 2rem; margin-bottom: 12px; }
    .not-found-section p { color: var(--text-muted); margin-bottom: 24px; font-size: 1.05rem; }
    .not-found-section .btn-home {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--accent);
        color: var(--primary);
        font-weight: 600;
        padding: 12px 32px;
        border-radius: 40px;
        transition: var(--transition);
    }
    .not-found-section .btn-home:hover { background: var(--accent-hover); transform: translateY(-2px); }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--primary);
        color: rgba(255,255,255,0.7);
        padding: 56px 0 32px;
        border-top: 1px solid var(--border-light);
    }
    .footer-inner {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    @media (max-width: 1024px) { .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; } }
    @media (max-width: 520px) { .footer-inner { grid-template-columns: 1fr; gap: 24px; } }
    .footer-brand .logo { margin-bottom: 12px; font-size: 1.2rem; }
    .footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 340px; color: rgba(255,255,255,0.55); }
    .footer-col h4 {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: 0.3px;
    }
    .footer-col a {
        display: block;
        color: rgba(255,255,255,0.55);
        font-size: 0.85rem;
        padding: 4px 0;
        transition: var(--transition);
    }
    .footer-col a:hover { color: var(--accent); transform: translateX(4px); }
    .footer-social { display: flex; gap: 12px; flex-wrap: wrap; }
    .footer-social a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        color: rgba(255,255,255,0.6);
        font-size: 1.1rem;
        transition: var(--transition);
    }
    .footer-social a:hover { background: var(--accent); color: var(--primary); transform: translateY(-3px); }
    .footer-bottom {
        border-top: 1px solid var(--border-light);
        padding-top: 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.8rem;
        color: rgba(255,255,255,0.4);
    }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: var(--accent); }
    @media (max-width: 520px) { .footer-bottom { flex-direction: column; text-align: center; } }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .article-hero h1 { font-size: 2rem; }
    }
    @media (max-width: 768px) {
        :root { --header-height: 64px; --tab-height: 60px; }
        .header-inner { padding: 0 16px; }
        .logo { font-size: 1.1rem; }
        .logo i { font-size: 1.2rem; }
        .article-hero { min-height: 300px; }
        .article-hero h1 { font-size: 1.5rem; }
        .article-body { padding: 20px 16px; }
        .article-tags-share { flex-direction: column; align-items: flex-start; }
        .sidebar-widget { padding: 20px 16px; }
        .cta-section h2 { font-size: 1.3rem; }
    }
    @media (max-width: 520px) {
        .article-hero { min-height: 240px; }
        .article-hero h1 { font-size: 1.2rem; }
        .article-hero .hero-meta { font-size: 0.75rem; gap: 8px; }
        .article-body { padding: 16px 12px; }
        .article-body .article-text { font-size: 0.9rem; }
        .cta-section .btn-group { flex-direction: column; width: 100%; }
        .cta-section .btn-primary, .cta-section .btn-outline { width: 100%; justify-content: center; }
    }

    /* ===== Utility ===== */
    .text-accent { color: var(--accent); }
    .text-muted { color: var(--text-muted); }
    .mt-2 { margin-top: 2rem; }
    .mb-2 { margin-bottom: 2rem; }
    .text-center { text-align: center; }