/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a2540;
            --primary-light: #1a5a8c;
            --primary-dark: #061a2e;
            --primary-bg: #f0f6fc;
            --accent: #d4a53a;
            --accent-light: #f0d68a;
            --accent-dark: #b8891e;
            --bg: #ffffff;
            --bg-alt: #f5f8fb;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #5a6a7e;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'SF Pro Display', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica Neue, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        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: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-title { text-align: center; margin-bottom: 16px; }
        .section-subtitle { text-align: center; font-size: 1.1rem; color: var(--text-light); max-width: 640px; margin: 0 auto 48px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem;
            transition: var(--transition); border: 2px solid transparent; white-space: nowrap;
            text-decoration: none; line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent); color: var(--primary-dark); border-color: var(--accent);
        }
        .btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline {
            background: transparent; color: var(--bg); border-color: var(--bg);
        }
        .btn-outline:hover { background: var(--bg); color: var(--primary); border-color: var(--bg); transform: translateY(-2px); }
        .btn-ghost {
            background: transparent; color: var(--primary-light); border-color: var(--border);
        }
        .btn-ghost:hover { background: var(--primary-bg); border-color: var(--primary-light); transform: translateY(-1px); }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; border-radius: var(--radius-md); }
        .btn-sm { padding: 8px 18px; font-size: 0.9rem; border-radius: 6px; }
        .btn:focus-visible { outline: 3px solid var(--accent-light); outline-offset: 2px; }

        /* ===== 导航 ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.97); backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border); height: var(--header-height);
            transition: var(--transition);
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .header-logo {
            display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800;
            color: var(--primary); text-decoration: none; flex-shrink: 0;
        }
        .header-logo i { color: var(--accent); font-size: 1.6rem; }
        .header-logo:hover { color: var(--primary); }
        .header-logo span { letter-spacing: 0.5px; }
        .nav { display: flex; align-items: center; gap: 32px; }
        .nav a {
            font-size: 0.95rem; font-weight: 500; color: var(--text); text-decoration: none;
            padding: 6px 0; position: relative; transition: var(--transition);
        }
        .nav a::after {
            content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
            background: var(--accent); transform: scaleX(0); transition: var(--transition);
            border-radius: 2px;
        }
        .nav a:hover { color: var(--primary-light); }
        .nav a:hover::after { transform: scaleX(1); }
        .nav a.active { color: var(--primary-light); }
        .nav a.active::after { transform: scaleX(1); }
        .nav-cta .btn { padding: 8px 22px; font-size: 0.9rem; }
        .header-search {
            display: flex; align-items: center; background: var(--bg-alt);
            border: 1px solid var(--border); border-radius: 24px; padding: 6px 16px;
            transition: var(--transition); margin-left: 8px;
        }
        .header-search:focus-within { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(26,90,140,0.1); }
        .header-search input {
            border: none; background: transparent; outline: none; padding: 4px 8px;
            font-size: 0.9rem; color: var(--text); width: 140px;
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search i { color: var(--text-muted); font-size: 0.9rem; }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; background: none; border: none; padding: 4px; }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 92vh; display: flex; align-items: center; position: relative;
            background: linear-gradient(135deg, rgba(10,37,64,0.92) 0%, rgba(26,90,140,0.80) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding-top: var(--header-height); overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; text-align: center; padding: 60px 24px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 6px;
            background: rgba(255,255,255,0.12); backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.20); padding: 8px 20px;
            border-radius: 40px; color: var(--accent-light); font-size: 0.9rem; font-weight: 500;
            margin-bottom: 32px; letter-spacing: 0.5px;
        }
        .hero-badge i { font-size: 0.8rem; }
        .hero h1 {
            font-size: 3rem; color: #fff; margin-bottom: 20px; max-width: 800px;
            margin-left: auto; margin-right: auto; line-height: 1.25; font-weight: 800;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.2rem; color: rgba(255,255,255,0.85); max-width: 640px;
            margin: 0 auto 36px; line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .hero-stats {
            display: flex; gap: 48px; justify-content: center; margin-top: 56px;
            flex-wrap: wrap;
        }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: #fff; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

        /* ===== 核心优势 ===== */
        .features-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .feature-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius-md); padding: 32px 24px; text-align: center;
            transition: var(--transition); position: relative; overflow: hidden;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .feature-card .icon {
            width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            background: var(--primary-bg); color: var(--primary-light); font-size: 1.6rem;
            transition: var(--transition);
        }
        .feature-card:hover .icon { background: var(--primary); color: #fff; }
        .feature-card h3 { margin-bottom: 12px; font-size: 1.1rem; }
        .feature-card p { font-size: 0.95rem; margin-bottom: 0; color: var(--text-light); }

        /* ===== 关于板块 ===== */
        .about-wrap {
            display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
        }
        .about-image {
            border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-xl);
            position: relative;
        }
        .about-image img { width: 100%; height: 400px; object-fit: cover; }
        .about-image::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(10,37,64,0.10), transparent);
        }
        .about-content h2 { margin-bottom: 20px; }
        .about-content p { font-size: 1.05rem; line-height: 1.8; margin-bottom: 16px; }
        .about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
        .tag {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--primary-bg); color: var(--primary-light); padding: 6px 16px;
            border-radius: 20px; font-size: 0.85rem; font-weight: 500;
            border: 1px solid rgba(26,90,140,0.12);
        }
        .tag i { font-size: 0.75rem; color: var(--accent); }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative;
        }
        .steps-grid::before {
            content: ''; position: absolute; top: 40px; left: 12%; right: 12%;
            height: 2px; background: linear-gradient(to right, var(--accent), var(--primary-light));
            z-index: 0;
        }
        .step-card {
            text-align: center; position: relative; z-index: 1;
            background: var(--bg-card); padding: 32px 20px; border-radius: var(--radius-md);
            border: 1px solid var(--border); transition: var(--transition);
        }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .step-num {
            width: 48px; height: 48px; margin: 0 auto 20px; border-radius: 50%;
            background: var(--accent); color: var(--primary-dark); font-weight: 800; font-size: 1.2rem;
            display: flex; align-items: center; justify-content: center;
            box-shadow: 0 4px 12px rgba(212,165,58,0.30);
        }
        .step-card h4 { margin-bottom: 10px; }
        .step-card p { font-size: 0.92rem; margin-bottom: 0; color: var(--text-muted); }

        /* ===== 最新资讯 (CMS列表) ===== */
        .news-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .news-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius-md); overflow: hidden; transition: var(--transition);
        }
        .news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .news-card .thumb {
            position: relative; overflow: hidden; height: 200px;
        }
        .news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-card:hover .thumb img { transform: scale(1.05); }
        .news-card .thumb .cat-tag {
            position: absolute; top: 12px; left: 12px;
            background: var(--accent); color: var(--primary-dark); font-size: 0.75rem;
            font-weight: 600; padding: 4px 12px; border-radius: 16px;
        }
        .news-card .body { padding: 20px; }
        .news-card .body .date { font-size: 0.82rem; color: var(--text-muted); display: block; margin-bottom: 8px; }
        .news-card .body h3 { font-size: 1.05rem; margin-bottom: 10px; line-height: 1.4; }
        .news-card .body h3 a { color: var(--primary); }
        .news-card .body h3 a:hover { color: var(--primary-light); }
        .news-card .body p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .body .read-more {
            display: inline-flex; align-items: center; gap: 4px; margin-top: 14px;
            font-size: 0.88rem; font-weight: 600; color: var(--primary-light);
        }
        .news-card .body .read-more:hover { color: var(--accent); gap: 8px; }
        .news-empty {
            grid-column: 1 / -1; text-align: center; padding: 60px 20px;
            background: var(--bg-alt); border-radius: var(--radius-md); color: var(--text-muted);
            font-size: 1.05rem;
        }
        .news-empty i { font-size: 2.4rem; display: block; margin-bottom: 16px; color: var(--border); }

        /* ===== 数据统计 ===== */
        .stats-wrap {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .stat-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius-md); padding: 40px 24px; text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .stat-card .num { font-size: 2.4rem; font-weight: 800; color: var(--primary); }
        .stat-card .num span { color: var(--accent); }
        .stat-card .label { font-size: 0.95rem; color: var(--text-light); margin-top: 8px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius-sm); overflow: hidden; transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            width: 100%; display: flex; align-items: center; justify-content: space-between;
            padding: 18px 24px; font-size: 1rem; font-weight: 600; color: var(--text);
            background: none; text-align: left; transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question i { transition: var(--transition); color: var(--text-muted); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            padding: 0 24px 18px; font-size: 0.95rem; color: var(--text-light);
            line-height: 1.7; display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(212,165,58,0.08), transparent 60%);
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
        .cta-section .btn-primary {
            background: var(--accent); color: var(--primary-dark); border-color: var(--accent);
            font-size: 1.1rem; padding: 16px 44px;
        }
        .cta-section .btn-primary:hover { background: #fff; border-color: #fff; color: var(--primary); }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.7); padding: 48px 0 32px;
        }
        .footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo { font-size: 1.2rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 300px; margin-bottom: 20px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
            background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.7); font-size: 0.95rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: var(--primary-dark); }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul a { font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: var(--transition); }
        .footer ul a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px;
            padding-top: 24px; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid::before { display: none; }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-wrap { grid-template-columns: repeat(2, 1fr); }
            .footer .container { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.5rem; }

            .nav { display: none; }
            .nav-open .nav { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.99); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 20px 24px; gap: 16px; align-items: stretch; }
            .nav-open .nav a { padding: 10px 0; }
            .nav-open .nav a::after { display: none; }
            .nav-open .nav-cta { margin-top: 8px; }
            .nav-toggle { display: block; }
            .header-search { display: none; }

            .about-wrap { grid-template-columns: 1fr; gap: 32px; }
            .about-image img { height: 260px; }

            .features-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-wrap { grid-template-columns: 1fr; }
            .footer .container { grid-template-columns: 1fr; gap: 32px; }
            .footer-brand p { max-width: 100%; }
            .cta-section h2 { font-size: 1.6rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-actions .btn { width: 100%; max-width: 280px; }
            .btn-lg { padding: 14px 32px; font-size: 1rem; }
            .section-title { font-size: 1.4rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .mt-48 { margin-top: 48px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-48 { margin-bottom: 48px; }
        .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: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1d4ed8;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --accent-light: #34d399;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --gray-900: #111827;
            --gray-800: #1f2937;
            --gray-700: #374151;
            --gray-600: #4b5563;
            --gray-500: #6b7280;
            --gray-400: #9ca3af;
            --gray-300: #d1d5db;
            --gray-200: #e5e7eb;
            --gray-100: #f3f4f6;
            --gray-50: #f9fafb;
            --white: #ffffff;
            --body-bg: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --section-gap: 80px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body { font-family: var(--font-family); font-size: 16px; line-height: 1.6; color: var(--text); background: var(--body-bg); -webkit-font-smoothing: antialiased; }
        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); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--dark); }
        h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        .section { padding: var(--section-gap) 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { max-width: 640px; margin: 0 auto; font-size: 1.125rem; color: var(--text-muted); }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; font-size: 1rem; font-weight: 600; border-radius: var(--radius-sm); border: none; cursor: pointer; transition: all var(--transition); text-decoration: none; line-height: 1.4; }
        .btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35); }
        .btn-primary:hover { background: var(--primary-dark); box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45); transform: translateY(-2px); color: var(--white); }
        .btn-secondary { background: var(--secondary); color: var(--white); box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35); }
        .btn-secondary:hover { background: #d97706; box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45); transform: translateY(-2px); color: var(--white); }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
        .btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
        .btn-white { background: var(--white); color: var(--primary); }
        .btn-white:hover { background: var(--gray-50); transform: translateY(-2px); color: var(--primary-dark); }
        .btn-sm { padding: 8px 18px; font-size: 0.875rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.125rem; }
        .badge { display: inline-block; padding: 4px 14px; font-size: 0.8125rem; font-weight: 500; border-radius: 50px; background: var(--primary-bg); color: var(--primary); }
        .badge-success { background: #ecfdf5; color: var(--accent); }
        .badge-warning { background: #fffbeb; color: var(--secondary); }

        /* ===== Header / Nav ===== */
        .header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); height: var(--header-h); }
        .header .container { display: flex; align-items: center; height: 100%; gap: 24px; }
        .header-logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800; color: var(--dark); text-decoration: none; flex-shrink: 0; }
        .header-logo i { color: var(--primary); font-size: 1.5rem; }
        .header-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header-logo:hover { color: var(--dark); }
        .nav { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: center; }
        .nav a { position: relative; padding: 8px 16px; font-size: 0.9375rem; font-weight: 500; color: var(--text-light); border-radius: var(--radius-sm); transition: all var(--transition); text-decoration: none; }
        .nav a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
        .nav a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 3px; }
        .nav-cta { margin-left: 8px; }
        .nav-cta .btn { padding: 8px 20px; font-size: 0.875rem; }
        .header-search { display: flex; align-items: center; gap: 8px; background: var(--gray-100); border-radius: 50px; padding: 6px 16px; border: 1px solid transparent; transition: all var(--transition); flex-shrink: 0; }
        .header-search:focus-within { border-color: var(--primary); background: var(--white); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
        .header-search i { color: var(--text-muted); font-size: 0.875rem; }
        .header-search input { border: none; background: transparent; outline: none; font-size: 0.875rem; color: var(--text); width: 140px; }
        .header-search input::placeholder { color: var(--text-muted); }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--dark); cursor: pointer; padding: 4px; }

        /* ===== Hero ===== */
        .hero { position: relative; padding: 100px 0 80px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%); overflow: hidden; min-height: 520px; display: flex; align-items: center; }
        .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat; opacity: 0.18; }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(30,41,59,0.70) 100%); }
        .hero .container { position: relative; z-index: 2; text-align: center; }
        .hero-badge { display: inline-block; padding: 6px 20px; background: rgba(37,99,235,0.20); border: 1px solid rgba(37,99,235,0.30); border-radius: 50px; font-size: 0.875rem; color: var(--primary-light); margin-bottom: 24px; backdrop-filter: blur(4px); }
        .hero h1 { font-size: 3rem; font-weight: 800; color: var(--white); margin-bottom: 16px; letter-spacing: -0.02em; }
        .hero h1 span { background: linear-gradient(135deg, var(--primary-light), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 1.125rem; color: rgba(255,255,255,0.75); max-width: 680px; margin: 0 auto 32px; line-height: 1.7; }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 48px; padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.10); }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--white); }
        .hero-stat .label { font-size: 0.875rem; color: rgba(255,255,255,0.55); margin-top: 4px; }

        /* ===== Platform Cards ===== */
        .platform-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .platform-card { background: var(--white); border-radius: var(--radius); padding: 40px 32px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all var(--transition); text-align: center; }
        .platform-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary-light); }
        .platform-card .icon { width: 72px; height: 72px; margin: 0 auto 20px; background: var(--primary-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2rem; color: var(--primary); }
        .platform-card h3 { margin-bottom: 8px; }
        .platform-card p { font-size: 0.9375rem; color: var(--text-muted); margin-bottom: 20px; }
        .platform-card .btn { width: 100%; }

        /* ===== Features ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card { background: var(--white); border-radius: var(--radius); padding: 32px 24px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all var(--transition); text-align: center; }
        .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .feature-card .icon { width: 56px; height: 56px; margin: 0 auto 16px; background: linear-gradient(135deg, var(--primary-bg), #dbeafe); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--primary); }
        .feature-card h4 { margin-bottom: 8px; font-size: 1.125rem; }
        .feature-card p { font-size: 0.875rem; color: var(--text-muted); margin: 0; }

        /* ===== Steps ===== */
        .steps { position: relative; }
        .steps-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat; opacity: 0.06; }
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 2; }
        .step-card { text-align: center; background: var(--white); border-radius: var(--radius); padding: 32px 20px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all var(--transition); }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .step-number { width: 48px; height: 48px; margin: 0 auto 16px; background: var(--primary); color: var(--white); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; font-weight: 700; }
        .step-card h4 { margin-bottom: 8px; }
        .step-card p { font-size: 0.875rem; color: var(--text-muted); margin: 0; }

        /* ===== Security ===== */
        .security-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .security-image { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
        .security-image img { width: 100%; height: 400px; object-fit: cover; }
        .security-content h2 { margin-bottom: 16px; }
        .security-content p { margin-bottom: 24px; }
        .security-tags { display: flex; flex-wrap: wrap; gap: 12px; }
        .security-tags .badge { font-size: 0.9375rem; padding: 8px 20px; }

        /* ===== Testimonials ===== */
        .testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .testimonial-card { background: var(--white); border-radius: var(--radius); padding: 28px 24px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all var(--transition); }
        .testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .testimonial-card .stars { color: var(--secondary); margin-bottom: 12px; font-size: 0.9375rem; }
        .testimonial-card blockquote { font-size: 0.9375rem; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
        .testimonial-card .author { display: flex; align-items: center; gap: 12px; }
        .testimonial-card .author-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--primary-bg); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary); font-size: 0.875rem; }
        .testimonial-card .author-info strong { display: block; font-size: 0.875rem; color: var(--dark); }
        .testimonial-card .author-info span { font-size: 0.8125rem; color: var(--text-muted); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; transition: all var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; background: var(--white); cursor: pointer; font-size: 1rem; font-weight: 600; color: var(--dark); border: none; width: 100%; text-align: left; transition: all var(--transition); }
        .faq-question:hover { background: var(--gray-50); }
        .faq-question i { transition: transform var(--transition); color: var(--text-muted); font-size: 0.875rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 18px; font-size: 0.9375rem; color: var(--text-light); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); padding: 80px 0; text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat; opacity: 0.08; }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.25rem; color: var(--white); margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 32px; font-size: 1.125rem; }
        .cta-section .btn { font-size: 1.125rem; padding: 16px 40px; }

        /* ===== Footer ===== */
        .footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
        .footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo { display: flex; align-items: center; gap: 8px; font-size: 1.125rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--primary-light); }
        .footer-brand p { font-size: 0.875rem; color: rgba(255,255,255,0.5); line-height: 1.7; margin-bottom: 20px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a { width: 40px; height: 40px; background: rgba(255,255,255,0.08); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); transition: all var(--transition); font-size: 1.125rem; }
        .footer-social a:hover { background: var(--primary); color: var(--white); }
        .footer h4 { color: var(--white); font-size: 1rem; margin-bottom: 20px; }
        .footer ul li { margin-bottom: 12px; }
        .footer ul li a { color: rgba(255,255,255,0.5); font-size: 0.875rem; transition: all var(--transition); text-decoration: none; display: flex; align-items: center; gap: 8px; }
        .footer ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer ul li a i { width: 16px; font-size: 0.8125rem; }
        .footer-bottom { margin-top: 40px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06); text-align: center; font-size: 0.8125rem; color: rgba(255,255,255,0.35); }
        .footer-bottom a { color: rgba(255,255,255,0.45); text-decoration: none; }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
            .footer .container { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 2.5rem; }
            .security-wrap { grid-template-columns: 1fr; }
            .security-image img { height: 280px; }
        }
        @media (max-width: 768px) {
            :root { --section-gap: 56px; }
            .header .container { gap: 12px; }
            .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--white); flex-direction: column; padding: 16px 24px 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%; }
            .nav a.active::after { display: none; }
            .nav-cta { margin-left: 0; width: 100%; margin-top: 8px; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .header-search { display: none; }
            .nav-toggle { display: block; }
            .hero { padding: 60px 0 48px; min-height: auto; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat .num { font-size: 1.5rem; }
            .platform-grid { grid-template-columns: 1fr; gap: 20px; }
            .features-grid { grid-template-columns: 1fr; gap: 20px; }
            .steps-grid { grid-template-columns: 1fr; gap: 16px; }
            .testimonials-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer .container { grid-template-columns: 1fr; gap: 32px; }
            .footer-brand { grid-column: 1; }
            .section-title h2 { font-size: 1.75rem; }
            .cta-section h2 { font-size: 1.75rem; }
            .security-image img { height: 220px; }
            .platform-card { padding: 28px 20px; }
            .feature-card { padding: 24px 20px; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.625rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-actions .btn { width: 100%; max-width: 280px; }
            .hero-stats { flex-direction: column; gap: 16px; }
            .section { padding: 40px 0; }
            .container { padding: 0 16px; }
            .faq-question { font-size: 0.9375rem; padding: 14px 16px; }
            .faq-answer { padding: 0 16px 14px; }
            .platform-card .icon { width: 56px; height: 56px; font-size: 1.5rem; }
            .step-number { width: 40px; height: 40px; font-size: 1rem; }
        }

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-soft: #475569;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.10);
    --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
    --max-width: 1200px;
    --content-max: 780px;
    --header-h: 72px;
    --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font:inherit;outline:none}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Header & Nav */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);background:rgba(255,255,255,0.96);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow var(--transition)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.header-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--text);white-space:nowrap;transition:opacity var(--transition)}
.header-logo:hover{opacity:0.85;color:var(--text)}
.header-logo i{color:var(--accent);font-size:22px}
.nav{display:flex;align-items:center;gap:8px}
.nav a{position:relative;padding:8px 18px;font-size:15px;font-weight:500;color:var(--text-soft);border-radius:var(--radius-sm);transition:all var(--transition);white-space:nowrap}
.nav a:hover{color:var(--primary);background:rgba(37,99,235,0.06)}
.nav a.active{color:var(--primary);background:rgba(37,99,235,0.10);font-weight:600}
.nav-cta{margin-left:8px}
.header-search{display:flex;align-items:center;gap:8px;background:var(--bg-alt);border:1px solid var(--border);border-radius:50px;padding:6px 16px;transition:all var(--transition);flex:0 1 220px}
.header-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,0.12)}
.header-search i{color:var(--text-muted);font-size:14px}
.header-search input{border:none;background:transparent;padding:4px 0;font-size:14px;color:var(--text);width:100%}
.header-search input::placeholder{color:var(--text-muted)}
.nav-toggle{display:none;background:none;border:none;font-size:22px;color:var(--text);cursor:pointer;padding:6px 10px;border-radius:var(--radius-sm);transition:background var(--transition)}
.nav-toggle:hover{background:var(--bg-alt)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;font-size:15px;font-weight:600;line-height:1.2;border-radius:50px;border:2px solid transparent;cursor:pointer;transition:all var(--transition);white-space:nowrap;text-align:center}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,0.30)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,0.20)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,0.30)}
.btn-sm{padding:8px 20px;font-size:14px}
.btn-lg{padding:16px 36px;font-size:17px}
.btn:focus-visible{outline:3px solid rgba(37,99,235,0.40);outline-offset:2px}

/* Article Hero */
.article-hero{position:relative;margin-top:var(--header-h);padding:80px 0 60px;background:linear-gradient(135deg, #0f172a 0%, #1e293b 100%);color:#fff;overflow:hidden;min-height:340px;display:flex;align-items:center}
.article-hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center center/cover no-repeat;opacity:0.30;z-index:0}
.article-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg, rgba(15,23,42,0.70) 0%, rgba(30,41,59,0.90) 100%);z-index:1}
.article-hero .container{position:relative;z-index:2;text-align:center}
.article-hero .meta{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px 24px;margin-bottom:20px;font-size:14px;color:rgba(255,255,255,0.70)}
.article-hero .meta span{display:flex;align-items:center;gap:6px}
.article-hero .meta i{font-size:13px;color:var(--accent-light)}
.article-hero .category-badge{display:inline-block;padding:4px 16px;background:rgba(37,99,235,0.25);color:var(--accent-light);border-radius:50px;font-size:13px;font-weight:500;border:1px solid rgba(37,99,235,0.30);margin-bottom:16px}
.article-hero h1{font-size:clamp(26px, 4.2vw, 48px);font-weight:800;line-height:1.25;max-width:900px;margin:0 auto 16px;letter-spacing:-0.01em}
.article-hero .lead{font-size:clamp(15px, 1.6vw, 18px);color:rgba(255,255,255,0.75);max-width:700px;margin:0 auto;line-height:1.6}

/* Article Content */
.article-content-wrap{padding:48px 0 32px;background:var(--bg)}
.article-content{max-width:var(--content-max);margin:0 auto}
.article-body{font-size:16px;line-height:1.85;color:var(--text)}
.article-body p{margin-bottom:1.4em}
.article-body h2,.article-body h3,.article-body h4{margin-top:1.6em;margin-bottom:0.6em;font-weight:700;color:var(--text);line-height:1.3}
.article-body h2{font-size:24px}
.article-body h3{font-size:20px}
.article-body ul,.article-body ol{padding-left:1.5em;margin-bottom:1.4em}
.article-body li{margin-bottom:0.4em}
.article-body img{border-radius:var(--radius-md);margin:1.5em auto;box-shadow:var(--shadow-md)}
.article-body blockquote{border-left:4px solid var(--primary);padding:16px 24px;margin:1.5em 0;background:var(--bg-alt);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-soft);font-style:italic}
.article-body a{text-decoration:underline;text-underline-offset:3px}
.article-body code{background:var(--bg-alt);padding:2px 8px;border-radius:4px;font-size:0.9em;color:var(--primary-dark);border:1px solid var(--border)}
.article-body pre{background:#0f172a;color:#e2e8f0;padding:20px 24px;border-radius:var(--radius-md);overflow-x:auto;margin:1.5em 0;font-size:14px;line-height:1.6}
.article-not-found{text-align:center;padding:80px 20px;max-width:500px;margin:0 auto}
.article-not-found i{font-size:56px;color:var(--text-muted);margin-bottom:20px;display:block}
.article-not-found h2{font-size:24px;margin-bottom:12px;color:var(--text)}
.article-not-found p{color:var(--text-soft);margin-bottom:24px}
.article-footer-meta{border-top:1px solid var(--border);padding-top:24px;margin-top:40px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.article-tags .tag{padding:4px 14px;background:var(--bg-alt);border:1px solid var(--border);border-radius:50px;font-size:13px;color:var(--text-soft);transition:all var(--transition)}
.article-tags .tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.article-share{display:flex;align-items:center;gap:10px}
.article-share span{font-size:14px;color:var(--text-muted)}
.article-share a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-alt);border:1px solid var(--border);color:var(--text-soft);transition:all var(--transition)}
.article-share a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Related Section */
.related-section{background:var(--bg-alt);padding:64px 0}
.related-section .section-title{text-align:center;margin-bottom:40px}
.related-section .section-title h2{font-size:28px;font-weight:700;color:var(--text);margin-bottom:8px}
.related-section .section-title p{color:var(--text-soft);font-size:16px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition);box-shadow:var(--shadow-sm)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.related-card .card-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.related-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.related-card:hover .card-img img{transform:scale(1.05)}
.related-card .card-body{padding:20px}
.related-card .card-body h3{font-size:17px;font-weight:600;line-height:1.4;margin-bottom:8px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .card-body h3 a{color:var(--text);transition:color var(--transition)}
.related-card .card-body h3 a:hover{color:var(--primary)}
.related-card .card-body .card-meta{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:12px}

/* FAQ Section */
.faq-section{padding:64px 0;background:var(--bg)}
.faq-section .section-title{text-align:center;margin-bottom:40px}
.faq-section .section-title h2{font-size:28px;font-weight:700;color:var(--text);margin-bottom:8px}
.faq-section .section-title p{color:var(--text-soft);font-size:16px}
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:all var(--transition)}
.faq-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow-sm)}
.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;padding:18px 24px;background:var(--bg);border:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);text-align:left;transition:background var(--transition);gap:12px}
.faq-question:hover{background:var(--bg-alt)}
.faq-question i{font-size:14px;color:var(--primary);transition:transform var(--transition);flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{padding:0 24px 0;max-height:0;overflow:hidden;transition:all 0.35s ease;color:var(--text-soft);font-size:15px;line-height:1.7}
.faq-item.active .faq-answer{padding:0 24px 20px;max-height:400px}

/* CTA Section */
.cta-section{padding:72px 0;background:linear-gradient(135deg, #1e293b 0%, #0f172a 100%);color:#fff;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center center/cover no-repeat;opacity:0.12;z-index:0}
.cta-section .container{position:relative;z-index:1}
.cta-section h2{font-size:clamp(24px, 3.2vw, 36px);font-weight:700;margin-bottom:12px}
.cta-section p{font-size:17px;color:rgba(255,255,255,0.75);max-width:600px;margin:0 auto 32px}
.cta-section .btn-group{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}

/* Footer */
.footer{background:#0f172a;color:rgba(255,255,255,0.80);padding:56px 0 0}
.footer .container{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .logo i{color:var(--accent)}
.footer-brand p{font-size:14px;line-height:1.7;color:rgba(255,255,255,0.60);max-width:320px;margin-bottom:20px}
.footer-social{display:flex;gap:12px}
.footer-social a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.08);color:rgba(255,255,255,0.65);transition:all var(--transition);font-size:18px}
.footer-social a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.footer h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:16px}
.footer ul{list-style:none;padding:0}
.footer ul li{margin-bottom:10px}
.footer ul a{color:rgba(255,255,255,0.60);font-size:14px;transition:all var(--transition);display:flex;align-items:center;gap:8px}
.footer ul a:hover{color:var(--accent-light);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0;margin-top:48px;text-align:center;font-size:13px;color:rgba(255,255,255,0.45)}
.footer-bottom a{color:rgba(255,255,255,0.55)}
.footer-bottom a:hover{color:var(--accent-light)}

/* Responsive */
@media(max-width:1024px){
    .related-grid{grid-template-columns:repeat(2,1fr)}
    .footer .container{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand{grid-column:1/-1}
}
@media(max-width:768px){
    :root{--header-h:64px}
    .header-search{flex:0 1 160px}
    .nav{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);flex-direction:column;padding:16px 24px 24px;border-bottom:1px solid var(--border);transform:translateY(-110%);opacity:0;pointer-events:none;transition:all 0.35s ease;box-shadow:var(--shadow-lg);border-radius:0 0 var(--radius-lg) var(--radius-lg);gap:4px}
    .nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
    .nav a{padding:12px 16px;width:100%;text-align:center;font-size:16px}
    .nav-cta{width:100%;margin-left:0;margin-top:8px}
    .nav-cta .btn{width:100%}
    .nav-toggle{display:block}
    .article-hero{padding:56px 0 40px;min-height:260px}
    .article-hero h1{font-size:24px}
    .related-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
    .faq-question{padding:14px 18px;font-size:15px}
    .faq-answer{padding:0 18px 0;font-size:14px}
    .faq-item.active .faq-answer{padding:0 18px 16px}
    .cta-section{padding:48px 0}
    .footer .container{grid-template-columns:1fr;gap:28px}
    .footer-brand p{max-width:100%}
    .article-footer-meta{flex-direction:column;align-items:flex-start}
}
@media(max-width:520px){
    .container{padding:0 16px}
    .header-logo{font-size:16px;gap:6px}
    .header-logo i{font-size:18px}
    .header-search{flex:0 1 120px;padding:4px 12px}
    .header-search input{font-size:13px}
    .article-hero{padding:40px 0 32px;min-height:220px}
    .article-hero h1{font-size:20px}
    .btn-lg{padding:14px 28px;font-size:15px}
    .btn-group{flex-direction:column;align-items:center}
    .btn-group .btn{width:100%;max-width:320px}
}