/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #3b4a8a;
            --primary-dark: #0f1a4a;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --accent-dark: #c2304a;
            --bg-light: #f8f9fc;
            --bg-dark: #0d1117;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #f0f0f5;
            --border-light: #e5e7eb;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 基础重置 ===== */
        *, *::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-dark);
            background: var(--bg-light);
            line-height: 1.6;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }

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

        /* ===== 导航 ===== */
        .site-header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
        .nav-center { position: absolute; left: 50%; transform: translateX(-50%); }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition);
            position: relative;
        }
        .nav-link:hover { color: var(--primary); background: rgba(26,42,108,0.06); }
        .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(26,42,108,0.25);
        }
        .nav-link.active:hover { background: var(--primary-light); color: #fff; }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
        .hamburger span { width: 26px; height: 2.5px; background: var(--text-dark); border-radius: 4px; transition: all var(--transition); }
        .hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .hamburger.open span:nth-child(2) { opacity: 0; }
        .hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border-light);
            padding: 16px 20px 24px;
            box-shadow: var(--shadow-md);
            border-radius: 0 0 var(--radius) var(--radius);
        }
        .mobile-menu.open { display: block; }
        .mobile-menu .nav-link { display: block; padding: 12px 16px; border-radius: 8px; font-size: 1.05rem; }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(26,42,108,0.92) 0%, rgba(13,17,23,0.88) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            text-align: center;
            padding: 60px 20px;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .hero-content { position: relative; z-index: 2; max-width: 820px; }
        .hero-badge {
            display: inline-block;
            background: rgba(233,69,96,0.25);
            backdrop-filter: blur(4px);
            padding: 6px 22px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            border: 1px solid rgba(233,69,96,0.3);
        }
        .hero h1 { font-size: 3.2rem; font-weight: 800; line-height: 1.2; margin-bottom: 20px; letter-spacing: -0.5px; }
        .hero h1 span { background: linear-gradient(135deg, #f7971e, #ffd200); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.8); max-width: 640px; margin: 0 auto 36px; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 28px rgba(233,69,96,0.35); }
        .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 12px 36px rgba(233,69,96,0.40); color: #fff; }
        .btn-secondary { background: rgba(255,255,255,0.12); backdrop-filter: blur(4px); color: #fff; border: 1px solid rgba(255,255,255,0.20); }
        .btn-secondary:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); color: #fff; }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .hero-stats { display: flex; flex-wrap: wrap; gap: 40px; justify-content: center; margin-top: 48px; }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: #fff; }
        .hero-stat .label { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-top: 2px; }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: #fff; }
        .section-dark { background: var(--bg-dark); color: var(--text-light); }
        .section-title { text-align: center; margin-bottom: 52px; }
        .section-title h2 { font-size: 2.2rem; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 12px; }
        .section-title h2 i { color: var(--accent); margin-right: 8px; }
        .section-title p { color: var(--text-muted); max-width: 560px; margin: 0 auto; font-size: 1.05rem; }
        .section-title.light p { color: rgba(255,255,255,0.6); }

        /* ===== 卡片 ===== */
        .card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .card-img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-body h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
        .card-body p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }
        .card-tag {
            display: inline-block;
            background: rgba(233,69,96,0.08);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        /* ===== 特色板块 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .feature-icon { width: 64px; height: 64px; margin: 0 auto 18px; display: flex; align-items: center; justify-content: center; border-radius: 20px; font-size: 1.6rem; color: #fff; }
        .feature-icon.purple { background: linear-gradient(135deg, #667eea, #764ba2); }
        .feature-icon.orange { background: linear-gradient(135deg, #f7971e, #ffd200); }
        .feature-icon.pink { background: linear-gradient(135deg, #e94560, #ff6b81); }
        .feature-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; }
        .feature-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }

        /* ===== 类别入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            padding: 32px;
            color: #fff;
            transition: all var(--transition);
            background-size: cover;
            background-position: center;
        }
        .category-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.15) 100%);
            transition: opacity var(--transition);
        }
        .category-card:hover::before { opacity: 0.85; }
        .category-card:hover { transform: scale(1.02); box-shadow: var(--shadow-lg); }
        .category-card .content { position: relative; z-index: 2; }
        .category-card h3 { font-size: 1.6rem; font-weight: 700; margin-bottom: 6px; }
        .category-card p { font-size: 0.95rem; opacity: 0.85; max-width: 360px; }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            padding: 8px 20px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(4px);
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.2);
            transition: all var(--transition);
        }
        .category-card .cat-link:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

        /* ===== 资讯列表 ===== */
        .news-list { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        .news-item {
            display: flex;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
        .news-thumb { width: 100px; height: 80px; border-radius: 10px; object-fit: cover; flex-shrink: 0; }
        .news-info { flex: 1; }
        .news-info h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-info p { color: var(--text-muted); font-size: 0.88rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-meta { display: flex; gap: 14px; margin-top: 6px; font-size: 0.8rem; color: var(--text-muted); }
        .news-meta span { display: flex; align-items: center; gap: 4px; }

        /* ===== 数据板块 ===== */
        .data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .data-card {
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            padding: 36px 20px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }
        .data-card:hover { background: rgba(255,255,255,0.10); transform: translateY(-3px); }
        .data-card .num { font-size: 2.6rem; font-weight: 800; background: linear-gradient(135deg, #f7971e, #ffd200); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .data-card .label { color: rgba(255,255,255,0.7); font-size: 0.95rem; margin-top: 6px; }

        /* ===== 流程 ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; counter-reset: step; }
        .step-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-card::before {
            counter-increment: step;
            content: "0" counter(step);
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 20px;
            letter-spacing: 1px;
        }
        .step-icon { font-size: 2.2rem; color: var(--accent); margin-bottom: 16px; margin-top: 8px; }
        .step-card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
        .step-card p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            margin-bottom: 14px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(26,42,108,0.02); }
        .faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 20px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; display: none; }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
            padding: 80px 20px;
            border-radius: var(--radius-lg);
            margin: 0 20px;
        }
        .cta-section h2 { font-size: 2.2rem; font-weight: 700; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; opacity: 0.85; max-width: 520px; margin: 0 auto 32px; }
        .cta-section .btn-primary { background: #fff; color: var(--primary); box-shadow: 0 8px 28px rgba(0,0,0,0.20); }
        .cta-section .btn-primary:hover { background: var(--accent); color: #fff; box-shadow: 0 12px 36px rgba(233,69,96,0.40); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 20px 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; max-width: 1200px; margin: 0 auto; }
        .footer-brand .nav-logo { font-size: 1.4rem; }
        .footer-brand p { margin-top: 12px; font-size: 0.92rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 14px; }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { font-size: 0.9rem; opacity: 0.7; transition: all var(--transition); }
        .footer-col ul li a:hover { opacity: 1; color: var(--accent); }
        .footer-bottom { max-width: 1200px; margin: 40px auto 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; }
        .footer-bottom a { opacity: 0.6; }
        .footer-bottom a:hover { opacity: 1; color: var(--accent); }

        /* ===== 空状态 ===== */
        .empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
        .empty-state i { font-size: 2.4rem; margin-bottom: 12px; opacity: 0.4; }
        .empty-state p { font-size: 1rem; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .hamburger { display: flex; }
            .nav-wrap { position: relative; }
            .nav-center { position: static; transform: none; }
            .mobile-menu.open { display: block; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 20px; }
            .hero-stat .num { font-size: 1.5rem; }
            .section { padding: 56px 0; }
            .section-title h2 { font-size: 1.7rem; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-list { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section { margin: 0 12px; padding: 48px 16px; }
            .cta-section h2 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.7rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
            .data-grid { grid-template-columns: 1fr; }
            .news-item { flex-direction: column; }
            .news-thumb { width: 100%; height: 140px; }
        }

        /* ===== 辅助 ===== */
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 12px; }
        .tag {
            display: inline-block;
            background: rgba(233,69,96,0.08);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
        }
        .tag-blue { background: rgba(26,42,108,0.08); color: var(--primary); }

/* roulang page: category1 */
:root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #A29BFE;
            --secondary: #FD79A8;
            --accent: #00CEC9;
            --dark: #1A1A2E;
            --darker: #0F0F1A;
            --bg-light: #F8F9FE;
            --bg-card: #FFFFFF;
            --text-dark: #1A1A2E;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input, textarea {
            font-family: inherit;
            outline: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(108,92,231,0.10);
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-left { justify-content: flex-start; }
        .nav-right { justify-content: flex-end; }
        .nav-center {
            flex-shrink: 0;
            text-align: center;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .nav-logo:hover {
            opacity: 0.85;
        }
        .nav-link {
            position: relative;
            padding: 6px 16px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 40px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(108,92,231,0.08);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 14px rgba(108,92,231,0.30);
        }
        .nav-link.active:hover {
            box-shadow: 0 6px 20px rgba(108,92,231,0.40);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-light);
            cursor: pointer;
            gap: 5px;
            padding: 8px;
            transition: var(--transition);
            z-index: 1100;
        }
        .hamburger:hover {
            background: rgba(108,92,231,0.10);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 24px 24px;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            border-top: 1px solid var(--border);
            gap: 6px;
            animation: slideDown 0.3s ease;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 1rem;
        }
        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        /* Button base */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 40px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(108,92,231,0.30);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108,92,231,0.40);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0,0,0,0.08);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.12);
        }
        /* Section */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        /* Cards */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 40px;
            background: rgba(108,92,231,0.10);
            color: var(--primary);
        }
        .badge-hot {
            background: rgba(253,121,168,0.12);
            color: #E84393;
        }
        .badge-new {
            background: rgba(0,206,201,0.12);
            color: #00B894;
        }
        .badge-top {
            background: rgba(253,203,110,0.20);
            color: #FDCB6E;
        }
        /* Stats */
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            gap: 16px;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.1rem;
            transition: var(--transition);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 400px;
            padding-top: 12px;
        }
        /* Footer */
        .site-footer {
            background: var(--darker);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-brand .nav-logo {
            font-size: 1.5rem;
            -webkit-text-fill-color: #fff;
            background: none;
            color: #fff;
            margin-bottom: 12px;
            display: block;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 1200px;
            margin: 40px auto 0;
            padding: 20px 24px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.50);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        /* Page banner */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--darker) 0%, #2D1B69 50%, var(--dark) 100%);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .page-banner p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.70);
            max-width: 620px;
            margin: 0 auto 28px;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.50);
            margin-bottom: 20px;
        }
        .page-banner .breadcrumb a {
            color: rgba(255,255,255,0.70);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb span {
            color: var(--primary-light);
        }
        /* Platform cards */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .platform-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }
        .platform-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }
        .platform-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.8rem;
            color: #fff;
        }
        .platform-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .platform-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 6px;
        }
        .platform-tags span {
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-muted);
        }
        /* Comparison */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .compare-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .compare-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .compare-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .compare-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .compare-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text-muted);
        }
        .compare-card ul li i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .compare-card ul li .check-green {
            color: var(--accent);
        }
        /* Tips list */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .tips-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tips-list li:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .tips-list li .num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
        }
        .tips-list li .tip-text {
            flex: 1;
        }
        .tips-list li .tip-text strong {
            display: block;
            font-size: 0.98rem;
            margin-bottom: 4px;
        }
        .tips-list li .tip-text span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* News card */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .news-card .news-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .news-card .news-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
        }
        .news-card .news-body {
            padding: 20px;
        }
        .news-card .news-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-card .news-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-light);
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #2D1B69);
            padding: 80px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.80;
            max-width: 540px;
            margin: 0 auto 32px;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .platform-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .hamburger { display: flex; }
            .nav-wrap { justify-content: space-between; }
            .nav-center { margin: 0 auto; }
            .page-banner { padding: 70px 0 60px; }
            .page-banner h1 { font-size: 2rem; }
            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .platform-grid { grid-template-columns: 1fr; }
            .compare-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .tips-list { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .stat-number { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .page-banner h1 { font-size: 1.6rem; }
            .btn { padding: 10px 20px; font-size: 0.85rem; }
            .platform-card { padding: 24px 18px; }
            .compare-card { padding: 24px 18px; }
        }
        /* Tailwind overrides */
        .bg-primary-light { background: rgba(108,92,231,0.08); }
        .text-primary { color: var(--primary); }
        .border-primary { border-color: var(--primary); }
        .hover\:shadow-lg:hover { box-shadow: var(--shadow-lg); }
        .transition { transition: var(--transition); }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --secondary: #f59e0b;
            --accent: #10b981;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-soft: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* header / nav */
        .site-header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226,232,240,0.5);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-right { justify-content: flex-end; }
        .nav-center { display: flex; align-items: center; justify-content: center; flex-shrink: 0; padding: 0 24px; }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover { color: var(--primary); background: rgba(37,99,235,0.06); }
        .nav-link.active { color: var(--primary); background: rgba(37,99,235,0.10); font-weight: 600; }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: var(--transition);
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover { background: rgba(0,0,0,0.04); }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 20px 24px 32px;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 20px 40px rgba(0,0,0,0.06);
            z-index: 999;
            flex-direction: column;
            gap: 12px;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu .nav-link {
            font-size: 1.1rem;
            padding: 12px 16px;
            border-radius: 10px;
        }
        @media (max-width: 900px) {
            .nav-left, .nav-right { display: none; }
            .hamburger { display: flex; }
            .nav-center { flex: 1; justify-content: flex-start; padding-left: 0; }
            .nav-logo { font-size: 1.3rem; }
        }
        @media (min-width: 901px) {
            .mobile-menu { display: none !important; }
        }

        /* hero / banner */
        .article-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 80px 24px 60px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.82) 0%, rgba(30,41,59,0.60) 60%, rgba(37,99,235,0.30) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
        }
        .article-banner .category-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(255,255,255,0.18);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.20);
        }
        .article-banner h1 {
            font-size: clamp(1.8rem, 5vw, 3rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 18px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.20);
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.80);
            font-size: 0.95rem;
        }
        .article-banner .meta i { margin-right: 6px; opacity: 0.7; }
        @media (max-width: 600px) {
            .article-banner { min-height: 280px; padding: 60px 16px 40px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-banner .meta { gap: 12px; font-size: 0.85rem; }
        }

        /* article body */
        .article-body {
            padding: 48px 0 60px;
            background: var(--bg);
        }
        .article-body .container {
            max-width: 820px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px 52px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content p {
            margin-bottom: 1.4em;
        }
        .article-content h2, .article-content h3, .article-content h4 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: #0f172a;
        }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.3rem; }
        .article-content ul, .article-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-content li { margin-bottom: 0.4em; }
        .article-content img {
            margin: 2em auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.8em 0;
            background: #f1f5f9;
            border-radius: 0 var(--radius) var(--radius) 0;
            color: var(--text-soft);
            font-style: italic;
        }
        .article-content a { text-decoration: underline; text-underline-offset: 3px; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            padding: 6px 16px;
            border-radius: 50px;
            background: #f1f5f9;
            color: var(--text-soft);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        @media (max-width: 768px) {
            .article-content { padding: 28px 20px; font-size: 1rem; }
            .article-content h2 { font-size: 1.35rem; }
        }

        /* not found */
        .not-found-wrap {
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 80px 24px;
            text-align: center;
        }
        .not-found-wrap .nf-icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .not-found-wrap h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }
        .not-found-wrap p {
            font-size: 1.1rem;
            color: var(--text-soft);
            margin-bottom: 28px;
        }
        .not-found-wrap .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-wrap .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.30); }

        /* related posts */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 40px;
            color: var(--text);
        }
        .related-section .section-title span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .related-card .rc-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .rc-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .rc-cat {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text);
            flex: 1;
        }
        .related-card h3 a { color: inherit; }
        .related-card h3 a:hover { color: var(--primary); }
        .related-card .rc-meta {
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-section .section-title { font-size: 1.4rem; }
        }

        /* cta */
        .article-cta {
            padding: 56px 24px 64px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            text-align: center;
        }
        .article-cta h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.70);
            margin-bottom: 28px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            border-radius: 50px;
            background: var(--secondary);
            color: #0f172a;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .article-cta .btn-cta:hover { background: #fbbf24; transform: translateY(-3px); box-shadow: 0 12px 32px rgba(245,158,11,0.35); }
        @media (max-width: 600px) {
            .article-cta h2 { font-size: 1.5rem; }
            .article-cta .btn-cta { padding: 12px 28px; font-size: 0.95rem; }
        }

        /* footer */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.80);
            padding: 56px 24px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: 1280px;
            margin: 0 auto 36px;
        }
        .footer-brand .nav-logo {
            font-size: 1.6rem;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.60);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            color: rgba(255,255,255,0.60);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 1280px;
            margin: 0 auto;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a { color: rgba(255,255,255,0.55); }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 600px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* shared utilities */
        .text-gradient { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px;
            background: var(--primary); color: #fff; font-weight: 600;
            transition: var(--transition); border: none; cursor: pointer;
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.30); color: #fff; }
        .btn-outline {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px;
            border: 2px solid var(--primary); color: var(--primary); font-weight: 600;
            background: transparent; transition: var(--transition);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .section-pad { padding: 72px 0; }
        @media (max-width: 600px) { .section-pad { padding: 48px 0; } }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f0a500;
            --accent-hover: #d49200;
            --accent-light: #fce4a0;
            --bg-body: #f4f6f8;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-dark-alt: #16243d;
            --text-primary: #1a1a2e;
            --text-secondary: #4a5568;
            --text-muted: #8899aa;
            --text-light: #f0f4f8;
            --border-color: #e2e8f0;
            --border-light: rgba(255, 255, 255, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
            --shadow-glow: 0 0 30px rgba(240, 165, 0, 0.25);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        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: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-light);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-right {
            justify-content: flex-end;
        }
        .nav-center {
            flex-shrink: 0;
            padding: 0 24px;
        }
        .nav-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 1px;
            text-shadow: 0 2px 12px rgba(240, 165, 0, 0.3);
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-logo:hover {
            color: var(--accent);
            text-shadow: 0 0 30px rgba(240, 165, 0, 0.5);
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.10);
        }
        .nav-link.active {
            color: #ffffff;
            background: rgba(240, 165, 0, 0.20);
            box-shadow: inset 0 -2px 0 var(--accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: transparent;
            border: none;
            z-index: 1100;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #ffffff;
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--primary-dark);
            padding: 16px 24px 24px;
            gap: 6px;
            border-top: 1px solid var(--border-light);
            animation: slideDown 0.3s ease;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
        }
        .mobile-menu .nav-link.active {
            background: rgba(240, 165, 0, 0.15);
        }
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88) 0%, rgba(30, 58, 95, 0.78) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 24px 60px;
            border-bottom: 4px solid var(--accent);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(42, 82, 152, 0.25), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: #ffffff;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .category-hero h1 .highlight {
            color: var(--accent);
        }
        .category-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.90);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.8;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, 0.20);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(240, 165, 0, 0.35);
            padding: 8px 24px;
            border-radius: 50px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 1rem;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #ffffff;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.70);
        }
        .text-accent {
            color: var(--accent);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            border: 1px solid var(--border-color);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            transition: var(--transition);
        }
        .card:hover .card-img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-tag {
            display: inline-block;
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent-hover);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 8px 30px rgba(240, 165, 0, 0.45);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.40);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: var(--accent);
            color: var(--accent);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline-dark:hover {
            background: var(--primary);
            color: #ffffff;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.9rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-block;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag:hover,
        .tag.active {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .tag.active {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark);
        }
        .tag i {
            margin-right: 6px;
        }

        /* ===== 统计数字 ===== */
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 8px;
        }

        /* ===== 精选攻略 ===== */
        .featured-card {
            display: flex;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .featured-card .featured-img {
            width: 40%;
            min-height: 240px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .featured-card .featured-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .featured-body .tag {
            margin-bottom: 12px;
        }
        .featured-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .featured-body p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            margin-bottom: 16px;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            cursor: pointer;
            gap: 16px;
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1.2rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(240, 165, 0, 0.12), transparent 60%),
                radial-gradient(ellipse at 80% 50%, rgba(42, 82, 152, 0.20), transparent 60%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.1rem;
            line-height: 1.8;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark-alt);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .nav-logo {
            font-size: 1.5rem;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 36px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-bottom span {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .featured-card .featured-img {
                width: 35%;
                min-height: 200px;
            }
            .category-hero h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-wrap {
                justify-content: space-between;
                height: 64px;
            }
            .nav-center {
                padding: 0 8px;
            }
            .nav-logo {
                font-size: 1.3rem;
            }
            .category-hero {
                min-height: 300px;
                padding: 60px 20px 40px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }
            .featured-card {
                flex-direction: column;
            }
            .featured-card .featured-img {
                width: 100%;
                height: 200px;
            }
            .featured-card .featured-body {
                padding: 24px;
            }
            .featured-body h3 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero p {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .card-body {
                padding: 18px;
            }
            .card-img {
                height: 160px;
            }
            .faq-item {
                padding: 18px 20px;
            }
            .tag {
                font-size: 0.8rem;
                padding: 4px 14px;
            }
            .btn {
                padding: 10px 24px;
                font-size: 0.9rem;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .stat-card {
                padding: 20px 12px;
            }
        }

        /* ===== 工具类 ===== */
        .gap-grid {
            gap: 28px;
        }
        .text-shadow {
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .border-accent {
            border-color: var(--accent) !important;
        }
        .bg-accent-light {
            background: rgba(240, 165, 0, 0.08);
        }
        .hover-lift:hover {
            transform: translateY(-4px);
        }
        .transition-all {
            transition: var(--transition);
        }