/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #E8551E;
            --primary-light: #F2722E;
            --primary-dark: #C9440E;
            --primary-bg: rgba(232, 85, 30, 0.08);
            --secondary: #1E3A5F;
            --secondary-light: #2A5191;
            --accent: #F5A623;
            --success: #2ECC71;
            --bg: #FAFAFA;
            --bg-alt: #F0F2F5;
            --bg-dark: #0F1A2E;
            --text: #1A1A2E;
            --text-light: #5A6A7E;
            --text-lighter: #8A9AAC;
            --border: rgba(0, 0, 0, 0.08);
            --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, 0.14);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 76px;
            --glass-bg: rgba(255, 255, 255, 0.75);
            --glass-border: rgba(255, 255, 255, 0.25);
            --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
            --nav-blur: 18px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        button { cursor: pointer; font-family: var(--font); border: none; background: none; }
        input, textarea { font-family: var(--font); outline: none; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 3.2rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.4rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.6rem; }
        h4 { font-size: 1.25rem; }

        /* ===== 容器 ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: var(--bg-dark); color: #fff; }
        .section-title { text-align: center; margin-bottom: 16px; }
        .section-subtitle { text-align: center; color: var(--text-light); font-size: 1.1rem; max-width: 620px; margin: 0 auto 48px; }

        /* ===== 玻璃导航 ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height);
            background: var(--glass-bg);
            backdrop-filter: blur(var(--nav-blur));
            -webkit-backdrop-filter: blur(var(--nav-blur));
            border-bottom: 1px solid var(--glass-border);
            box-shadow: var(--glass-shadow);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled {
            background: rgba(255,255,255,0.92);
            box-shadow: 0 4px 24px rgba(0,0,0,0.10);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -0.02em;
        }
        .logo-icon { width: 38px; height: 38px; background: var(--primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.2rem; }
        .logo span { color: var(--secondary); }
        .nav { display: flex; align-items: center; gap: 6px; }
        .nav a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text);
            transition: all var(--transition); position: relative;
        }
        .nav a:hover { background: var(--primary-bg); color: var(--primary); }
        .nav a.active { background: var(--primary); color: #fff; }
        .nav-cta {
            background: var(--primary); color: #fff !important; padding: 10px 24px !important;
            border-radius: var(--radius-sm); font-weight: 600; margin-left: 8px;
        }
        .nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(232,85,30,0.30); }
        .menu-toggle { display: none; font-size: 1.6rem; color: var(--text); padding: 4px; }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh; display: flex; align-items: center;
            background: linear-gradient(135deg, #0F1A2E 0%, #1A2F4A 60%, #2A1A30 100%);
            position: relative; overflow: hidden; padding-top: var(--header-height);
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25; mix-blend-mode: overlay;
        }
        .hero::after {
            content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 2; padding: 40px 0; }
        .hero-content h1 { color: #fff; font-size: 3.6rem; line-height: 1.15; margin-bottom: 20px; }
        .hero-content h1 span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-content p { color: rgba(255,255,255,0.7); font-size: 1.2rem; max-width: 520px; margin-bottom: 32px; line-height: 1.8; }
        .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem; transition: all var(--transition); border: none; }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,85,30,0.35); color: #fff; }
        .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.25); }
        .btn-outline:hover { border-color: var(--primary); color: #fff; background: rgba(232,85,30,0.15); transform: translateY(-2px); }
        .btn-white { background: #fff; color: var(--secondary); }
        .btn-white:hover { background: var(--bg-alt); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.12); }
        .hero-visual { display: flex; justify-content: center; align-items: center; }
        .hero-card {
            background: rgba(255,255,255,0.06); border-radius: var(--radius-lg);
            padding: 32px; backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.08);
            width: 100%; max-width: 480px;
        }
        .hero-card img { border-radius: var(--radius-md); width: 100%; height: auto; }
        .hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
        .hero-stat { text-align: center; padding: 12px; background: rgba(255,255,255,0.05); border-radius: var(--radius-sm); }
        .hero-stat-num { font-size: 1.6rem; font-weight: 800; color: var(--accent); }
        .hero-stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.5); margin-top: 2px; }

        /* ===== 卡片 ===== */
        .card {
            background: #fff; border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: all var(--transition); border: 1px solid var(--border);
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
        .card-text { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }
        .card-meta { display: flex; align-items: center; gap: 12px; margin-top: 16px; font-size: 0.85rem; color: var(--text-lighter); }
        .card-tag { display: inline-block; padding: 4px 12px; background: var(--primary-bg); color: var(--primary); border-radius: 20px; font-size: 0.8rem; font-weight: 600; }

        /* ===== 分类卡片 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .cat-card {
            background: #fff; border-radius: var(--radius-md);
            padding: 32px 24px; text-align: center;
            border: 1px solid var(--border); box-shadow: var(--shadow-sm);
            transition: all var(--transition); cursor: default;
        }
        .cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary); }
        .cat-icon { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: #fff; }
        .cat-icon.orange { background: linear-gradient(135deg, #E8551E, #F5A623); }
        .cat-icon.blue { background: linear-gradient(135deg, #1E3A5F, #2A5191); }
        .cat-icon.green { background: linear-gradient(135deg, #1E8A5F, #2ECC71); }
        .cat-card h3 { font-size: 1.3rem; margin-bottom: 10px; }
        .cat-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }
        .cat-card .cat-link { display: inline-block; margin-top: 16px; color: var(--primary); font-weight: 600; font-size: 0.95rem; }
        .cat-card .cat-link:hover { gap: 6px; }

        /* ===== 资讯列表 ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex; align-items: center; gap: 20px;
            background: #fff; padding: 20px 24px; border-radius: var(--radius-sm);
            border: 1px solid var(--border); transition: all var(--transition);
        }
        .news-item:hover { box-shadow: var(--shadow-sm); border-color: var(--primary); }
        .news-item .news-tag { flex-shrink: 0; padding: 4px 14px; background: var(--primary-bg); color: var(--primary); border-radius: 20px; font-size: 0.8rem; font-weight: 600; }
        .news-item .news-title { flex: 1; font-weight: 600; color: var(--text); font-size: 1rem; }
        .news-item .news-title:hover { color: var(--primary); }
        .news-item .news-date { flex-shrink: 0; color: var(--text-lighter); font-size: 0.85rem; }
        .news-empty { text-align: center; padding: 40px 20px; color: var(--text-light); background: #fff; border-radius: var(--radius-sm); border: 1px dashed var(--border); }

        /* ===== 数据板块 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .stat-card {
            text-align: center; padding: 36px 20px;
            background: #fff; border-radius: var(--radius-md);
            border: 1px solid var(--border); box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-number span { font-size: 1.2rem; color: var(--text-lighter); font-weight: 400; }
        .stat-label { color: var(--text-light); font-size: 0.95rem; margin-top: 6px; }

        /* ===== 流程 ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .step { text-align: center; position: relative; }
        .step-num { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 800; box-shadow: 0 8px 24px rgba(232,85,30,0.25); }
        .step h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .step p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: #fff; border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; transition: all var(--transition); }
        .faq-item:hover { border-color: var(--primary); }
        .faq-question { padding: 18px 24px; display: flex; justify-content: space-between; align-items: center; font-weight: 600; color: var(--text); cursor: pointer; transition: background var(--transition); }
        .faq-question:hover { background: var(--primary-bg); }
        .faq-question i { color: var(--primary); transition: transform var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px; max-height: 0; overflow: hidden; transition: all 0.4s ease; color: var(--text-light); line-height: 1.7; }
        .faq-item.open .faq-answer { padding: 0 24px 18px; max-height: 300px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0F1A2E 0%, #1E3A5F 50%, #2A1A30 100%);
            padding: 80px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.12; }
        .cta-section h2 { color: #fff; font-size: 2.6rem; margin-bottom: 16px; position: relative; }
        .cta-section p { color: rgba(255,255,255,0.65); font-size: 1.15rem; max-width: 580px; margin: 0 auto 32px; position: relative; }
        .cta-section .btn { position: relative; }

        /* ===== 页脚 ===== */
        .footer { background: var(--bg-dark); color: rgba(255,255,255,0.6); padding: 48px 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.95rem; line-height: 1.7; max-width: 320px; }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer a { color: rgba(255,255,255,0.5); font-size: 0.9rem; display: block; padding: 4px 0; transition: color var(--transition); }
        .footer a:hover { color: var(--primary); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.5); font-size: 1.1rem; transition: all var(--transition); }
        .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .hero-content p { margin: 0 auto 32px; }
            .hero-buttons { justify-content: center; }
            .hero-card { margin: 0 auto; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            h1 { font-size: 2.6rem; }
            .hero-content h1 { font-size: 2.8rem; }
        }
        @media (max-width: 768px) {
            .nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.98); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); gap: 4px; }
            .nav.open { display: flex; }
            .nav a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-cta { margin-left: 0; margin-top: 4px; text-align: center; }
            .menu-toggle { display: block; }
            .hero { min-height: 80vh; }
            .hero-content h1 { font-size: 2.2rem; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
            .news-item { flex-direction: column; align-items: flex-start; gap: 8px; }
            .news-item .news-date { font-size: 0.8rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section { padding: 56px 0; }
            h2 { font-size: 1.8rem; }
            .cta-section h2 { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-content h1 { font-size: 1.8rem; }
            .hero-buttons .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-number { font-size: 2rem; }
            .stat-card { padding: 20px 12px; }
            .steps-grid { grid-template-columns: 1fr; }
            .cat-card { padding: 20px 16px; }
            .card-body { padding: 16px; }
            .faq-question { padding: 14px 16px; font-size: 0.95rem; }
            .faq-answer { padding: 0 16px; }
            .faq-item.open .faq-answer { padding: 0 16px 14px; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mt-48 { margin-top: 48px; }
        .gap-8 { gap: 8px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #F59E0B;
            --primary-dark: #D97706;
            --primary-light: #FCD34D;
            --primary-bg: rgba(245, 158, 11, 0.08);
            --secondary: #1E3A5F;
            --secondary-light: #2B4C7A;
            --accent: #10B981;
            --bg: #F8FAFC;
            --bg-alt: #F1F5F9;
            --bg-card: #FFFFFF;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 40px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-blur: blur(18px) saturate(180%);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== 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);
            background: var(--bg);
            padding-top: var(--header-h);
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Logo ===== */
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text);
            white-space: nowrap;
        }
        .logo .logo-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            border-radius: var(--radius-xs);
            color: #fff;
            font-size: 1.2rem;
        }
        .logo span:last-child {
            color: var(--primary);
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: var(--nav-blur);
            -webkit-backdrop-filter: var(--nav-blur);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav a:hover {
            color: var(--text);
        }
        .nav a:hover::after {
            width: 100%;
        }
        .nav a.active {
            color: var(--text);
        }
        .nav a.active::after {
            width: 100%;
            background: var(--primary);
        }
        .nav a.nav-cta {
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
        }
        .nav a.nav-cta::after {
            display: none;
        }
        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.40);
        }

        /* Mobile Toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-xs);
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        @media (max-width: 900px) {
            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: var(--nav-blur);
                -webkit-backdrop-filter: var(--nav-blur);
                flex-direction: column;
                padding: 24px 32px 32px;
                gap: 18px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a.nav-cta {
                width: 100%;
                text-align: center;
            }
            .nav-toggle {
                display: flex;
            }
        }

        /* ===== Article Hero / Banner ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 48px;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-hero .breadcrumb a {
            color: var(--text-secondary);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .article-hero .breadcrumb .sep {
            color: var(--text-light);
        }
        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-bottom: 16px;
        }
        .article-hero .meta .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            background: var(--primary-bg);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
        }
        .article-hero .meta .date {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .article-hero .meta .date i {
            margin-right: 4px;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            color: var(--text);
            max-width: 900px;
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 40px 0 32px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-hero .meta {
                gap: 10px 16px;
            }
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 48px 0 64px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* Main Content */
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 48px;
            border: 1px solid var(--border-light);
        }
        .article-content .content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content .content-body p {
            margin-bottom: 1.4em;
        }
        .article-content .content-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 1.6em 0 0.6em;
            color: var(--text);
        }
        .article-content .content-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 1.4em 0 0.5em;
            color: var(--text);
        }
        .article-content .content-body ul,
        .article-content .content-body ol {
            margin: 0 0 1.4em 1.6em;
        }
        .article-content .content-body li {
            margin-bottom: 0.4em;
        }
        .article-content .content-body img {
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow);
        }
        .article-content .content-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.6em 0;
            background: var(--primary-bg);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: normal;
        }
        .article-content .content-body a {
            color: var(--primary-dark);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content .content-body a:hover {
            color: var(--text);
        }

        /* Tags */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 16px;
            background: var(--bg-alt);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary-bg);
            color: var(--primary-dark);
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-card .list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card .list-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-card .list-item .thumb {
            width: 72px;
            height: 52px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }
        .sidebar-card .list-item .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-card .list-item .info .title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
            transition: var(--transition);
        }
        .sidebar-card .list-item .info .title:hover {
            color: var(--primary-dark);
        }
        .sidebar-card .list-item .info .meta-sm {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-card .cat-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .sidebar-card .cat-link:last-child {
            border-bottom: none;
        }
        .sidebar-card .cat-link:hover {
            color: var(--primary-dark);
            padding-left: 4px;
        }
        .sidebar-card .cat-link .count {
            background: var(--bg-alt);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* CTA in sidebar */
        .sidebar-cta {
            background: linear-gradient(145deg, var(--secondary), var(--secondary-light));
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            color: #fff;
            border: none;
        }
        .sidebar-cta h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            font-size: 0.9rem;
            opacity: 0.85;
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
        }
        .sidebar-cta .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.40);
        }

        @media (max-width: 768px) {
            .article-content {
                padding: 24px 20px;
            }
            .article-content .content-body {
                font-size: 1rem;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 48px 0 64px;
            background: var(--bg-alt);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section .section-title i {
            color: var(--primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-alt);
        }
        .related-card .info {
            padding: 20px 20px 22px;
        }
        .related-card .info .badge {
            display: inline-block;
            padding: 3px 12px;
            background: var(--primary-bg);
            color: var(--primary-dark);
            font-size: 0.72rem;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 8px;
        }
        .related-card .info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .related-card .info h4 a {
            color: var(--text);
        }
        .related-card .info h4 a:hover {
            color: var(--primary-dark);
        }
        .related-card .info p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .info .meta-sm {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 10px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 0;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            margin-top: 14px;
            opacity: 0.75;
            max-width: 360px;
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            opacity: 0.7;
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            padding: 0;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: #fff;
            padding: 0;
            transform: translateY(-2px);
        }
        @media (max-width: 900px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
        }
        @media (max-width: 560px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .not-found-box .icon-big {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }

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

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #f5a623;
            --primary-dark: #d48e1a;
            --primary-light: #fce4b8;
            --primary-gradient: linear-gradient(135deg, #f5a623 0%, #e8921a 100%);
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --bg-dark: #0f1923;
            --bg-card: #1a2a3a;
            --bg-card-hover: #1e3144;
            --bg-section: #111d2b;
            --bg-light: #f8f9fa;
            --text-light: #ffffff;
            --text-muted: #a0b3c6;
            --text-dark: #2c3e50;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.15);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 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-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 25, 35, 0.75);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(15, 25, 35, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary-gradient);
            border-radius: 10px;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 4px 12px rgba(245, 166, 35, 0.35);
        }

        .logo span:last-child {
            color: var(--primary);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav a.active {
            color: #fff;
            background: rgba(245, 166, 35, 0.15);
        }

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

        .nav a.nav-cta {
            background: var(--primary-gradient);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.3);
        }

        .nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.45);
            background: linear-gradient(135deg, #f7b23a 0%, #e8921a 100%);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            cursor: pointer;
        }

        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Banner 内页横幅 ===== */
        .page-banner {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #0a141f 0%, #162a3a 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            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: 0.25;
            z-index: 0;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 25, 35, 0.85) 0%, rgba(15, 25, 35, 0.4) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .page-banner h1 span {
            color: var(--primary);
        }

        .page-banner p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 620px;
            line-height: 1.7;
        }

        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .page-banner .banner-tags span {
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-section);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
            line-height: 1.2;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 48px;
            line-height: 1.7;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }

        .section-header .section-title {
            margin-bottom: 6px;
        }

        .section-header .section-sub {
            margin-bottom: 0;
        }

        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 20px;
            border: 1px solid var(--border-light);
            border-radius: 50px;
            transition: var(--transition);
        }

        .more-link:hover {
            background: rgba(245, 166, 35, 0.1);
            border-color: var(--primary);
            transform: translateX(4px);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

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

        .card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }

        .card .card-body {
            padding: 22px 24px 26px;
        }

        .card .card-tag {
            display: inline-block;
            padding: 3px 14px;
            background: rgba(245, 166, 35, 0.15);
            color: var(--primary);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 10px;
        }

        .card .card-title {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }

        .card .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== 特色直播板块 ===== */
        .featured-live {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .featured-live .main-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }

        .featured-live .main-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }

        .featured-live .main-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .featured-live .main-card .live-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 60, 60, 0.9);
            border-radius: 50px;
            color: #fff;
            font-size: 13px;
            font-weight: 700;
        }

        .featured-live .main-card .live-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #fff;
            animation: pulse-dot 1.2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }

        .featured-live .main-card .card-body {
            padding: 22px 24px 26px;
        }

        .featured-live .main-card .card-title {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .featured-live .main-card .card-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .featured-live .side-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .featured-live .side-item {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 14px 18px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }

        .featured-live .side-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(4px);
        }

        .featured-live .side-item .thumb {
            width: 80px;
            height: 60px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .featured-live .side-item .info {
            flex: 1;
            min-width: 0;
        }

        .featured-live .side-item .info h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .featured-live .side-item .info p {
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-live .side-item .info .meta {
            font-size: 12px;
            color: var(--primary);
            font-weight: 500;
            margin-top: 4px;
        }

        /* ===== 分类筛选 ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }

        .filter-bar .filter-btn {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .filter-bar .filter-btn:hover {
            color: #fff;
            border-color: var(--border-light);
            background: rgba(255, 255, 255, 0.08);
        }

        .filter-bar .filter-btn.active {
            color: #fff;
            background: var(--primary-gradient);
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.25);
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .tag-cloud a:hover {
            color: #fff;
            border-color: var(--primary);
            background: rgba(245, 166, 35, 0.1);
            transform: translateY(-2px);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }

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

        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

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

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }

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

        .faq-item .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-item .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a2a3a 0%, #0f1923 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 36px rgba(245, 166, 35, 0.45);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid var(--border-light);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
            background: rgba(245, 166, 35, 0.06);
        }

        /* ===== Footer ===== */
        .footer {
            background: #0a121c;
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 300px;
        }

        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-socials {
            display: flex;
            gap: 10px;
        }

        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-socials a:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-3px);
            padding-left: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .featured-live {
                grid-template-columns: 1fr;
            }
            .page-banner h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 25, 35, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }

            .nav.open {
                display: flex;
            }

            .nav a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }

            .nav a.active::after {
                display: none;
            }

            .nav a.nav-cta {
                text-align: center;
                margin-top: 6px;
            }

            .mobile-toggle {
                display: flex;
            }

            .page-banner {
                padding: 120px 0 60px;
                min-height: 240px;
            }

            .page-banner h1 {
                font-size: 28px;
            }

            .page-banner p {
                font-size: 16px;
            }

            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 26px;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }

            .featured-live .side-item {
                flex-direction: row;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

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

            .filter-bar {
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 8px;
            }
            .filter-bar .filter-btn {
                flex-shrink: 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-banner h1 {
                font-size: 24px;
            }

            .section-title {
                font-size: 22px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card .stat-number {
                font-size: 24px;
            }

            .featured-live .main-card .card-title {
                font-size: 18px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .logo {
                font-size: 18px;
            }
            .logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e8532e;
            --primary-dark: #c94422;
            --primary-light: #f06a4a;
            --secondary: #f5a623;
            --secondary-light: #f7c35a;
            --accent: #2ecc71;
            --bg-dark: #0f0f1a;
            --bg-darker: #080810;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --bg-glass: rgba(15, 15, 26, 0.72);
            --bg-glass-light: rgba(26, 26, 46, 0.65);
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #7a7a9a;
            --border-color: rgba(232, 83, 46, 0.25);
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 16px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(232, 83, 46, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-height: 76px;
        }

        /* ===== 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: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--text-primary) 40%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

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

        /* ===== Header / Nav (Glass Immersive) ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 0 24px;
            background: var(--bg-glass);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            padding: 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            font-size: 1.8rem;
            color: var(--primary);
            filter: drop-shadow(0 0 8px rgba(232, 83, 46, 0.3));
        }

        .logo span:last-child {
            color: var(--primary);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav a {
            color: var(--text-secondary);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav a:hover {
            color: var(--text-primary);
            background: rgba(232, 83, 46, 0.10);
        }

        .nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(232, 83, 46, 0.30);
        }

        .nav a.active:hover {
            background: var(--primary-dark);
        }

        .nav a.nav-cta {
            color: #fff;
            background: var(--primary);
            padding: 8px 24px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(232, 83, 46, 0.25);
            margin-left: 8px;
        }

        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 83, 46, 0.35);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-card) 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.20;
            z-index: 0;
        }

        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(15, 15, 26, 0.30) 0%, var(--bg-dark) 100%);
            z-index: 1;
        }

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

        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--bg-glass-light);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-color);
            padding: 6px 22px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 20px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        /* ===== Filter / Tab Bar ===== */
        .filter-bar {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 100;
            backdrop-filter: blur(12px);
            background: rgba(26, 26, 46, 0.88);
        }

        .filter-bar .container {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .filter-tag {
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            background: rgba(232, 83, 46, 0.08);
        }

        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 83, 46, 0.25);
        }

        /* ===== Tutorial Grid ===== */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .tutorial-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .tutorial-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-color);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            background: var(--bg-card-hover);
        }

        .tutorial-card .card-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-darker);
        }

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

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

        .tutorial-card .card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            box-shadow: 0 4px 12px rgba(232, 83, 46, 0.30);
        }

        .tutorial-card .card-img .duration {
            position: absolute;
            bottom: 14px;
            right: 14px;
            background: rgba(0, 0, 0, 0.72);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 4px 12px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        .tutorial-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .tutorial-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .tutorial-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .tutorial-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            margin-top: auto;
        }

        .tutorial-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .tutorial-card .card-meta i {
            color: var(--primary-light);
            font-size: 0.75rem;
        }

        .tutorial-card .card-meta .level {
            background: rgba(232, 83, 46, 0.12);
            color: var(--primary-light);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== Level Section ===== */
        .level-section {
            background: var(--bg-darker);
            position: relative;
        }

        .level-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }

        .level-section .container {
            position: relative;
            z-index: 1;
        }

        .level-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .level-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            border: 1px solid var(--border-light);
            text-align: center;
            transition: var(--transition);
        }

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

        .level-card .level-icon {
            font-size: 2.6rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }

        .level-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .level-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .level-card .level-count {
            display: inline-block;
            margin-top: 16px;
            background: rgba(232, 83, 46, 0.10);
            color: var(--primary-light);
            padding: 4px 18px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
        }

        /* ===== Coach Team ===== */
        .coach-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .coach-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

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

        .coach-card .coach-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 16px;
            border: 3px solid var(--primary);
            padding: 3px;
            background: var(--bg-darker);
        }

        .coach-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .coach-card .coach-title {
            color: var(--primary-light);
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .coach-card p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.6;
        }

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

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-dark);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-color);
        }

        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            gap: 16px;
            user-select: none;
            transition: var(--transition);
        }

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

        .faq-item .faq-question i {
            font-size: 0.9rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-card) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 16px 44px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(232, 83, 46, 0.30);
        }

        .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 12px 44px rgba(232, 83, 46, 0.45);
            color: #fff;
        }

        .cta-btn i {
            font-size: 1.2rem;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-darker);
            padding: 60px 0 0;
            border-top: 1px solid var(--border-light);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 300px;
        }

        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .footer a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            border-top: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 0.82rem;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-socials {
            display: flex;
            gap: 14px;
        }

        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 0;
        }

        .footer-socials a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            padding: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .tutorial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .coach-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header {
                padding: 0 16px;
                height: 66px;
            }
            .nav {
                position: fixed;
                top: 66px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: var(--bg-glass);
                backdrop-filter: blur(24px) saturate(1.6);
                -webkit-backdrop-filter: blur(24px) saturate(1.6);
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
            }
            .nav-toggle {
                display: block;
            }
            .category-hero {
                min-height: 300px;
                padding: 100px 20px 60px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-padding {
                padding: 56px 0;
            }
            .tutorial-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .level-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .coach-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .filter-bar .container {
                gap: 8px;
            }
            .filter-tag {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.92rem;
                margin-bottom: 32px;
            }
            .tutorial-card .card-body {
                padding: 16px 18px 20px;
            }
            .tutorial-card .card-body h3 {
                font-size: 1.05rem;
            }
            .level-card {
                padding: 24px 18px 22px;
            }
            .coach-card {
                padding: 20px 16px;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeUp 0.7s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #f97316;
            --primary-dark: #ea580c;
            --primary-light: #fed7aa;
            --primary-gradient: linear-gradient(135deg, #f97316, #ea580c);
            --secondary: #1e293b;
            --secondary-light: #334155;
            --accent: #06b6d4;
            --bg-dark: #0f172a;
            --bg-mid: #1e293b;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --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 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.18);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-height: 76px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-light);
            min-height: 100vh;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; font-size: inherit; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.1rem; }
        p { color: var(--text-secondary); margin-bottom: 0.8rem; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

        /* ===== Glass Navigation ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 23, 42, 0.72);
            backdrop-filter: blur(20px) saturate(120%);
            -webkit-backdrop-filter: blur(20px) saturate(120%);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(15, 23, 42, 0.92); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; padding-top: 0; padding-bottom: 0;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 800; color: #fff;
            letter-spacing: -0.3px; flex-shrink: 0;
        }
        .logo .logo-icon { font-size: 1.8rem; color: var(--primary); }
        .logo span span { color: var(--primary); }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            color: var(--text-white); font-weight: 500; font-size: 0.95rem;
            transition: var(--transition); position: relative;
            white-space: nowrap; letter-spacing: 0.2px;
        }
        .nav a:hover { color: #fff; background: rgba(255,255,255,0.1); }
        .nav a.active { color: #fff; background: var(--primary-gradient); box-shadow: 0 4px 16px rgba(249,115,22,0.35); }
        .nav a.nav-cta {
            background: var(--primary-gradient); color: #fff; border-radius: var(--radius-sm);
            padding: 8px 22px; font-weight: 600; box-shadow: 0 4px 16px rgba(249,115,22,0.25);
        }
        .nav a.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 28px rgba(249,115,22,0.4); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
        .nav-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: var(--transition); }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            background: var(--bg-dark); padding: 20px 0 18px; border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .breadcrumb .container { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
        .breadcrumb a { color: var(--text-light); font-size: 0.9rem; }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span.sep { color: var(--text-light); opacity: 0.5; font-size: 0.8rem; }
        .breadcrumb .current { color: var(--primary); font-weight: 600; font-size: 0.9rem; }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative; padding: 80px 0 72px; overflow: hidden;
            background: var(--bg-dark);
        }
        .page-banner .bg-overlay {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            opacity: 0.25; filter: brightness(0.5);
        }
        .page-banner .container { position: relative; z-index: 1; text-align: center; }
        .page-banner h1 { color: #fff; font-size: 2.8rem; margin-bottom: 16px; letter-spacing: -0.5px; }
        .page-banner h1 i { color: var(--primary); margin-right: 12px; }
        .page-banner p { color: var(--text-light); font-size: 1.15rem; max-width: 680px; margin: 0 auto; line-height: 1.7; }

        /* ===== Section Common ===== */
        section { padding: 72px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { font-size: 2rem; margin-bottom: 12px; position: relative; display: inline-block; }
        .section-title h2::after {
            content: ''; display: block; width: 60px; height: 4px;
            background: var(--primary-gradient); border-radius: 4px; margin: 12px auto 0;
        }
        .section-title p { max-width: 600px; margin: 12px auto 0; color: var(--text-secondary); font-size: 1.05rem; }
        .section-bg-dark { background: var(--bg-dark); }
        .section-bg-dark .section-title h2 { color: #fff; }
        .section-bg-dark .section-title p { color: var(--text-light); }
        .section-bg-mid { background: var(--bg-mid); }
        .section-bg-mid .section-title h2 { color: #fff; }
        .section-bg-mid .section-title p { color: var(--text-light); }

        /* ===== Card Grid ===== */
        .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .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);
            display: flex; flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .card .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
        .card .card-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
        .card .card-tag {
            display: inline-block; padding: 3px 14px; border-radius: 20px;
            background: var(--primary-light); color: var(--primary-dark); font-size: 0.75rem;
            font-weight: 600; letter-spacing: 0.3px; margin-bottom: 10px; width: fit-content;
        }
        .card h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--text-primary); }
        .card p { font-size: 0.92rem; color: var(--text-secondary); margin-bottom: 12px; flex: 1; }
        .card .card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; color: var(--text-light); border-top: 1px solid var(--border-light); padding-top: 14px; margin-top: auto; }
        .card .card-meta .price { color: var(--primary); font-weight: 700; font-size: 1.1rem; }
        .card .card-meta .price small { font-weight: 400; font-size: 0.8rem; color: var(--text-light); }
        .card .card-btn {
            display: inline-block; padding: 8px 22px; border-radius: var(--radius-sm);
            background: var(--primary-gradient); color: #fff; font-weight: 600; font-size: 0.85rem;
            transition: var(--transition); border: none; cursor: pointer; text-align: center;
        }
        .card .card-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(249,115,22,0.3); }

        /* ===== Featured / Big Card ===== */
        .featured-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
        .featured-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); display: flex; flex-direction: column;
        }
        .featured-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .featured-card .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .featured-card .card-body { padding: 24px 28px 28px; flex: 1; }
        .featured-card .card-body h3 { font-size: 1.3rem; margin-bottom: 10px; }
        .featured-card .card-body p { font-size: 0.95rem; margin-bottom: 16px; }
        .featured-card .card-body .price-row { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
        .featured-card .card-body .price-row .price { font-size: 1.6rem; font-weight: 800; color: var(--primary); }
        .featured-card .card-body .price-row .old-price { font-size: 1rem; color: var(--text-light); text-decoration: line-through; }
        .featured-card .card-body .card-btn { padding: 10px 28px; font-size: 0.95rem; }

        /* ===== Category Filter ===== */
        .filter-bar {
            display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
            margin-bottom: 40px;
        }
        .filter-bar .filter-btn {
            padding: 8px 24px; border-radius: 30px; border: 1px solid var(--border);
            background: #fff; color: var(--text-secondary); font-weight: 500; font-size: 0.9rem;
            cursor: pointer; transition: var(--transition);
        }
        .filter-bar .filter-btn:hover { border-color: var(--primary); color: var(--primary); }
        .filter-bar .filter-btn.active { background: var(--primary-gradient); color: #fff; border-color: transparent; box-shadow: 0 4px 16px rgba(249,115,22,0.25); }

        /* ===== Features / Icons ===== */
        .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .feature-item {
            text-align: center; padding: 32px 20px; border-radius: var(--radius-md);
            background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition);
        }
        .feature-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
        .feature-item .icon { font-size: 2.4rem; color: var(--primary); margin-bottom: 16px; }
        .feature-item h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .feature-item p { font-size: 0.88rem; color: var(--text-secondary); margin: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px; display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 1rem; cursor: pointer; color: var(--text-primary);
            background: none; border: none; width: 100%; text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 18px; font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark); position: relative; overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
            opacity: 0.12; filter: brightness(0.4);
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { color: var(--text-light); font-size: 1.1rem; max-width: 580px; margin: 0 auto 32px; }
        .cta-section .cta-btn {
            display: inline-block; padding: 16px 48px; border-radius: var(--radius-sm);
            background: var(--primary-gradient); color: #fff; font-weight: 700; font-size: 1.1rem;
            transition: var(--transition); box-shadow: 0 8px 32px rgba(249,115,22,0.3);
        }
        .cta-section .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(249,115,22,0.45); }

        /* ===== Footer ===== */
        .footer { background: #0b1120; color: var(--text-light); padding: 56px 0 0; }
        .footer .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
        .footer .footer-brand .logo { font-size: 1.3rem; margin-bottom: 14px; }
        .footer .footer-brand p { font-size: 0.9rem; color: var(--text-light); line-height: 1.7; max-width: 320px; }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
        .footer a { display: block; color: var(--text-light); font-size: 0.9rem; padding: 5px 0; transition: var(--transition); }
        .footer a:hover { color: var(--primary); padding-left: 4px; }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06); padding: 22px 0;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: var(--text-light);
        }
        .footer .footer-socials { display: flex; gap: 14px; }
        .footer .footer-socials a { font-size: 1.2rem; color: var(--text-light); padding: 0; }
        .footer .footer-socials a:hover { color: var(--primary); transform: scale(1.15); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .featured-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 66px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .page-banner { padding: 56px 0 48px; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner p { font-size: 1rem; }
            section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(15,23,42,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 16px 24px 24px; border-bottom: 1px solid rgba(255,255,255,0.06); gap: 6px; }
            .nav.open { display: flex; }
            .nav a { padding: 12px 16px; width: 100%; text-align: center; }
            .nav a.nav-cta { margin-top: 6px; }
            .nav-toggle { display: flex; }
            .card-grid { grid-template-columns: 1fr; gap: 20px; }
            .featured-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .filter-bar { gap: 8px; }
            .filter-bar .filter-btn { padding: 6px 18px; font-size: 0.85rem; }
            .footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section .cta-btn { padding: 14px 32px; font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            h1 { font-size: 1.6rem; }
            h2 { font-size: 1.3rem; }
            .page-banner h1 { font-size: 1.5rem; }
            .features-grid { grid-template-columns: 1fr; }
            .card .card-body { padding: 16px 18px 20px; }
            .featured-card .card-body { padding: 18px 20px 22px; }
            .faq-question { padding: 14px 18px; font-size: 0.92rem; }
            .faq-answer { padding: 0 18px 14px; }
        }