/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1a3e;
            --primary-light: #1a2a6c;
            --primary-dark: #080f25;
            --accent: #f0b90b;
            --accent-light: #f5d84a;
            --accent-dark: #c99a08;
            --bg: #ffffff;
            --bg-light: #f6f8fc;
            --bg-dark: #0a0f1e;
            --text: #111827;
            --text-light: #6b7280;
            --text-white: #f9fafb;
            --border: #e5e7eb;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 32px rgba(15, 26, 62, 0.10);
            --shadow-lg: 0 20px 60px rgba(15, 26, 62, 0.18);
            --shadow-accent: 0 8px 32px rgba(240, 185, 11, 0.30);
            --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 76px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; font-size: inherit; transition: var(--transition); }
        input, textarea { font-family: inherit; font-size: inherit; border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 10px 16px; outline: none; transition: var(--transition); }
        input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.15); }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.0rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 0.8rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 32px; border-radius: 50px;
            font-weight: 600; font-size: 1rem; line-height: 1.2;
            border: 2px solid transparent;
            transition: var(--transition); cursor: pointer;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent); color: var(--primary-dark); border-color: var(--accent);
        }
        .btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-accent); }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.5);
        }
        .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--text-white); transform: translateY(-2px); }
        .btn-dark {
            background: var(--primary); color: var(--text-white); border-color: var(--primary);
        }
        .btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow); }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.78rem; font-weight: 600; letter-spacing: 0.02em;
            background: rgba(240, 185, 11, 0.15); color: var(--accent-dark);
        }
        .badge-primary { background: var(--accent); color: var(--primary-dark); }
        .badge-light { background: rgba(255,255,255,0.15); color: var(--text-white); }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg); border-radius: var(--radius);
            box-shadow: var(--shadow); overflow: hidden;
            transition: var(--transition);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .card-text { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== 板块标题 ===== */
        .section { padding: 90px 0; }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-light { background: var(--bg-light); }
        .section-header { text-align: center; margin-bottom: 56px; }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { color: var(--text-light); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
        .section-dark .section-header p { color: rgba(255,255,255,0.65); }
        .section-header .badge { margin-bottom: 12px; }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h);
            background: rgba(15, 26, 62, 0.92); backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .logo { font-size: 1.25rem; font-weight: 800; color: var(--text-white); letter-spacing: 0.01em; display: flex; align-items: center; gap: 10px; }
        .logo-icon { width: 36px; height: 36px; background: var(--accent); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--primary-dark); font-size: 1.1rem; }
        .logo span { color: var(--accent); }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 8px 20px; border-radius: 50px; font-size: 0.92rem;
            font-weight: 500; color: rgba(255,255,255,0.75);
            transition: var(--transition); position: relative;
        }
        .nav a:hover { color: var(--text-white); background: rgba(255,255,255,0.08); }
        .nav a.active { color: var(--primary-dark); background: var(--accent); font-weight: 600; }
        .nav a.active:hover { background: var(--accent-light); }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
        .hamburger span { width: 26px; height: 2.5px; background: var(--text-white); border-radius: 4px; transition: var(--transition); }

        /* ===== Hero ===== */
        .hero {
            min-height: 92vh; display: flex; align-items: center;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            position: relative; padding-top: var(--header-h);
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,26,62,0.88) 0%, rgba(15,26,62,0.60) 60%, rgba(15,26,62,0.40) 100%);
        }
        .hero .container { position: relative; z-index: 2; padding-top: 40px; padding-bottom: 60px; }
        .hero-content { max-width: 720px; }
        .hero-content .badge { margin-bottom: 16px; }
        .hero-content h1 { color: var(--text-white); margin-bottom: 18px; font-size: 3.2rem; line-height: 1.2; }
        .hero-content h1 span { color: var(--accent); }
        .hero-content p { color: rgba(255,255,255,0.75); font-size: 1.12rem; max-width: 580px; margin-bottom: 32px; line-height: 1.7; }
        .hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
        .hero-stat { display: flex; flex-direction: column; }
        .hero-stat .num { font-size: 2.2rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

        /* ===== 特色卡片 ===== */
        .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .feature-card {
            background: var(--bg); border-radius: var(--radius); padding: 32px 24px;
            text-align: center; box-shadow: var(--shadow);
            transition: var(--transition); border: 1px solid var(--border);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
        .feature-icon { width: 60px; height: 60px; border-radius: 16px; background: rgba(240,185,11,0.12); display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.6rem; color: var(--accent); }
        .feature-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
        .feature-card p { font-size: 0.88rem; color: var(--text-light); }

        /* ===== 分类入口 ===== */
        .cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .cat-card {
            border-radius: var(--radius); overflow: hidden;
            box-shadow: var(--shadow); transition: var(--transition);
            background: var(--bg); border: 1px solid var(--border);
        }
        .cat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
        .cat-card .card-img { aspect-ratio: 16/9; }
        .cat-card .card-body { padding: 20px 24px 24px; }
        .cat-card .card-title { font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
        .cat-card .card-title i { color: var(--accent); font-size: 0.9rem; }

        /* ===== 资讯列表 ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex; align-items: flex-start; gap: 20px;
            padding: 20px 24px; background: var(--bg); border-radius: var(--radius-sm);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-item:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateX(4px); }
        .news-item .num { font-size: 1.4rem; font-weight: 800; color: var(--accent); min-width: 40px; line-height: 1.4; }
        .news-item .info { flex: 1; }
        .news-item .info h4 { font-size: 1.0rem; font-weight: 600; margin-bottom: 4px; }
        .news-item .info h4 a { color: var(--text); }
        .news-item .info h4 a:hover { color: var(--accent-dark); }
        .news-item .info p { font-size: 0.88rem; color: var(--text-light); margin: 0; }
        .news-item .meta { font-size: 0.78rem; color: var(--text-light); display: flex; gap: 12px; margin-top: 6px; }
        .news-item .meta .tag { background: rgba(240,185,11,0.12); color: var(--accent-dark); padding: 2px 10px; border-radius: 50px; font-weight: 500; }

        /* ===== 数据 / 流程 ===== */
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .process-step { text-align: center; position: relative; }
        .process-step .step-num { width: 56px; height: 56px; border-radius: 50%; background: var(--accent); color: var(--primary-dark); font-size: 1.5rem; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; position: relative; z-index: 2; }
        .process-step h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .process-step p { font-size: 0.88rem; color: var(--text-light); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg); border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question { padding: 18px 24px; font-weight: 600; font-size: 1.0rem; display: flex; justify-content: space-between; align-items: center; cursor: pointer; background: none; width: 100%; text-align: left; color: var(--text); gap: 12px; }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; flex-shrink: 0; }
        .faq-answer { padding: 0 24px 18px; font-size: 0.92rem; color: var(--text-light); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative; padding: 100px 0; text-align: center;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(15,26,62,0.82); }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--text-white); font-size: 2.4rem; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .btn { font-size: 1.08rem; padding: 16px 44px; }

        /* ===== Footer ===== */
        .footer { background: var(--bg-dark); color: rgba(255,255,255,0.65); padding: 60px 0 30px; border-top: 1px solid rgba(255,255,255,0.06); }
        .footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.88rem; max-width: 320px; }
        .footer h4 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 16px; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul a { font-size: 0.88rem; color: rgba(255,255,255,0.55); }
        .footer ul a:hover { color: var(--accent); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
            .footer-top { grid-template-columns: 1fr 1fr; }
            .hero-content h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(15,26,62,0.98); flex-direction: column; padding: 20px 24px; gap: 6px; border-bottom: 1px solid rgba(255,255,255,0.08); }
            .nav.open { display: flex; }
            .hamburger { display: flex; }
            .grid-2, .grid-3, .grid-4, .cat-grid { grid-template-columns: 1fr; gap: 20px; }
            .hero { min-height: 70vh; }
            .hero-content h1 { font-size: 2.0rem; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.6rem; }
            .section { padding: 60px 0; }
            .section-header { margin-bottom: 36px; }
            h2 { font-size: 1.6rem; }
            .footer-top { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-item { flex-direction: column; gap: 10px; padding: 16px 18px; }
            .news-item .num { font-size: 1.1rem; min-width: auto; }
            .cta-section h2 { font-size: 1.8rem; }
            .feature-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-content h1 { font-size: 1.6rem; }
            .hero-btns { flex-direction: column; }
            .hero-btns .btn { width: 100%; }
            .process-grid { grid-template-columns: 1fr; }
            .logo { font-size: 1.05rem; }
            .logo-icon { width: 30px; height: 30px; font-size: 0.9rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .empty-tip { padding: 40px 20px; text-align: center; color: var(--text-light); font-size: 0.95rem; background: var(--bg-light); border-radius: var(--radius-sm); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #264573;
            --accent: #f4a261;
            --accent-light: #f9c78a;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2b2d42;
            --text-muted: #6c757d;
            --text-light: #f1faee;
            --border-color: #e0e0e0;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: 1rem; outline: none; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-dark); font-weight: 700; }

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

        /* ===== Header / Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        .logo span { color: var(--primary); }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover { background: rgba(230, 57, 70, 0.06); color: var(--primary); }
        .nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
        }
        .nav a.active:hover { background: var(--primary-dark); color: #fff; }
        .nav .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 8px 22px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.25);
            transition: var(--transition);
        }
        .nav .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: transparent;
        }
        .nav-toggle:hover { background: rgba(0, 0, 0, 0.04); }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a3a 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230, 57, 70, 0.15) 0%, transparent 60%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-hero h1 i { color: var(--accent); margin-right: 12px; }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-bottom: 28px;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .page-hero .breadcrumb a { color: rgba(255, 255, 255, 0.75); }
        .page-hero .breadcrumb a:hover { color: var(--accent); }
        .page-hero .breadcrumb span { color: rgba(255, 255, 255, 0.4); }

        /* ===== Section Common ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3 { color: #fff; }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            margin-bottom: 14px;
            position: relative;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 56px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 14px auto 0;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-top: 14px;
        }
        .section-dark .section-header p { color: rgba(255, 255, 255, 0.65); }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            gap: 28px;
        }
        .card-grid-3 { grid-template-columns: repeat(3, 1fr); }
        .card-grid-2 { grid-template-columns: repeat(2, 1fr); }
        .card-grid-4 { grid-template-columns: repeat(4, 1fr); }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 22px 24px 26px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .card-body h3 a { color: var(--text-dark); }
        .card-body h3 a:hover { color: var(--primary); }
        .card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card .tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .card .meta i { margin-right: 4px; }
        .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            margin-top: 8px;
            transition: var(--transition);
        }
        .card-footer-link:hover { gap: 10px; color: var(--primary-dark); }

        /* ===== Guide Step / Timeline ===== */
        .step-list {
            display: grid;
            gap: 32px;
            max-width: 860px;
            margin: 0 auto;
        }
        .step-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-md); }
        .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
        }
        .step-content h3 { font-size: 1.15rem; margin-bottom: 6px; }
        .step-content p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 0.85rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--bg-dark), #1a2a3a);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container { position: relative; z-index: 2; }
        .cta-block h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 10px 32px rgba(230, 57, 70, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand .logo span { color: var(--primary); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.8; color: rgba(255, 255, 255, 0.55); max-width: 360px; }
        .footer h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .footer ul li { margin-bottom: 8px; }
        .footer ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a { color: rgba(255, 255, 255, 0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
            .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            .page-hero h1 { font-size: 2rem; }
            .page-hero p { font-size: 1rem; }
            .page-hero { padding: 56px 0 48px; min-height: 260px; }

            .section { padding: 48px 0; }
            .section-header h2 { font-size: 1.6rem; }

            .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }

            .nav { display: none; }
            .nav.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                padding: 16px 24px 24px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
                border-bottom: 1px solid var(--border-light);
                gap: 4px;
            }
            .nav.open a { padding: 12px 18px; width: 100%; }
            .nav-toggle { display: block; }

            .step-item { flex-direction: column; align-items: flex-start; padding: 20px 24px; }
            .step-num { width: 40px; height: 40px; font-size: 1rem; }

            .cta-block { padding: 40px 24px; }
            .cta-block h2 { font-size: 1.5rem; }

            .footer-top { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .page-hero h1 { font-size: 1.6rem; }
            .page-hero p { font-size: 0.92rem; }
            .card-body { padding: 18px 18px 22px; }
            .btn { padding: 12px 24px; font-size: 0.9rem; }
            .step-item { padding: 16px 18px; }
            .faq-question { padding: 14px 18px; font-size: 0.92rem; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .rounded-full { border-radius: 999px; }

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #e85d04;
  --primary-dark: #d45200;
  --primary-light: #ff8c42;
  --primary-gradient: linear-gradient(135deg, #e85d04 0%, #ff6b2b 100%);
  --secondary: #1b263b;
  --secondary-light: #2a3a5c;
  --accent: #f9c74f;
  --bg-body: #f8f9fc;
  --bg-white: #ffffff;
  --bg-dark: #0d1b2a;
  --bg-section: #f0f2f8;
  --text-dark: #1a1a2e;
  --text-body: #2d3a4a;
  --text-muted: #6c7a8a;
  --text-light: #f0f0f0;
  --text-white: #ffffff;
  --border-light: #e8ecf0;
  --border-focus: #e85d04;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-card: 0 4px 20px rgba(232,93,4,0.10);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1200px;
  --header-h: 72px;
}
/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; letter-spacing: -0.02em; }
h1 { font-size: 2.4rem; }
h2 { font-size: 1.8rem; margin-bottom: 0.8rem; }
h3 { font-size: 1.3rem; }
p { margin-bottom: 1rem; }
/* ===== Container ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  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-light);
  z-index: 1000;
  transition: var(--transition);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}
.logo .logo-icon {
  width: 38px;
  height: 38px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(232,93,4,0.3);
}
.logo span { color: var(--primary); font-weight: 800; }
.logo:hover { color: var(--text-dark); }
.nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.nav a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-body);
  transition: var(--transition);
  white-space: nowrap;
}
.nav a:hover { background: rgba(232,93,4,0.08); color: var(--primary); }
.nav a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(232,93,4,0.3); }
.nav a.active:hover { background: var(--primary-dark); }
.nav .btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 22px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(232,93,4,0.25);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,93,4,0.35); }
.nav .btn-primary i { font-size: 0.85rem; }
.mobile-toggle { display: none; font-size: 1.5rem; background: none; border: none; color: var(--text-dark); cursor: pointer; padding: 6px; }
/* ===== Article Banner ===== */
.article-banner {
  margin-top: var(--header-h);
  padding: 80px 0 60px;
  background: linear-gradient(135deg, #0d1b2a 0%, #1b263b 50%, #2a3a5c 100%);
  position: relative;
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.15;
  pointer-events: none;
}
.article-banner .container { position: relative; z-index: 1; width: 100%; }
.article-banner h1 {
  color: var(--text-white);
  font-size: 2.2rem;
  max-width: 860px;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 32px;
  align-items: center;
  color: rgba(255,255,255,0.75);
  font-size: 0.92rem;
}
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--primary-light); }
.article-meta .category-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary);
  color: #fff;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}
/* ===== Main Content ===== */
.article-main { padding: 48px 0 64px; }
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}
.article-content {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.article-content .featured-image {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 28px;
  object-fit: cover;
  max-height: 420px;
  box-shadow: var(--shadow-md);
}
.article-content .body-text { font-size: 1.05rem; line-height: 1.85; color: var(--text-body); }
.article-content .body-text h2 { margin-top: 1.6rem; font-size: 1.5rem; }
.article-content .body-text h3 { margin-top: 1.2rem; font-size: 1.2rem; }
.article-content .body-text p { margin-bottom: 1.2rem; }
.article-content .body-text ul, .article-content .body-text ol { margin-bottom: 1.2rem; padding-left: 1.6rem; list-style: disc; }
.article-content .body-text li { margin-bottom: 0.4rem; }
.article-content .body-text a { color: var(--primary); font-weight: 500; border-bottom: 1px solid transparent; }
.article-content .body-text a:hover { border-bottom-color: var(--primary); }
.article-content .body-text blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 20px;
  margin: 1.2rem 0;
  background: rgba(232,93,4,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-muted);
}
.article-footer-bar {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  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-section);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.article-share { display: flex; gap: 10px; align-items: center; }
.article-share span { font-size: 0.88rem; color: var(--text-muted); }
.article-share a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-section);
  color: var(--text-muted);
  transition: var(--transition);
  font-size: 0.95rem;
}
.article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.sidebar-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
.sidebar-post-list li { margin-bottom: 14px; }
.sidebar-post-list a {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-body);
  transition: var(--transition);
}
.sidebar-post-list a:hover { color: var(--primary); }
.sidebar-post-list img {
  width: 64px;
  height: 48px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-section);
}
.sidebar-post-list .post-title { font-size: 0.88rem; font-weight: 500; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-post-list .post-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }
.sidebar-cta {
  background: var(--primary-gradient);
  color: #fff;
  text-align: center;
  padding: 28px 20px;
  border: none;
}
.sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.3); }
.sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.92rem; margin-bottom: 18px; }
.sidebar-cta .btn-white {
  display: inline-block;
  padding: 10px 28px;
  background: #fff;
  color: var(--primary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: var(--transition);
}
.sidebar-cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
/* ===== Related Section ===== */
.related-section { padding: 56px 0; background: var(--bg-section); }
.related-section h2 { text-align: center; margin-bottom: 32px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
.related-card .card-body { padding: 18px 20px; }
.related-card .card-body h4 { font-size: 1rem; margin-bottom: 6px; }
.related-card .card-body h4 a { color: var(--text-dark); }
.related-card .card-body h4 a:hover { color: var(--primary); }
.related-card .card-body p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 0.78rem; color: var(--text-muted); }
/* ===== FAQ Section ===== */
.faq-section { padding: 56px 0; background: var(--bg-white); }
.faq-section h2 { text-align: center; margin-bottom: 32px; }
.faq-grid { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); }
.faq-question {
  padding: 18px 24px;
  background: var(--bg-white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  font-size: 1rem;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { background: rgba(232,93,4,0.04); }
.faq-question i { transition: var(--transition); color: var(--primary); font-size: 0.85rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px 18px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  display: none;
}
.faq-item.active .faq-answer { display: block; }
/* ===== CTA Section ===== */
.cta-section {
  padding: 64px 0;
  background: linear-gradient(135deg, #0d1b2a 0%, #1b263b 100%);
  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: 0.08;
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 640px; margin: 0 auto 28px; }
.cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-cta-primary {
  padding: 14px 38px;
  background: var(--primary-gradient);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 6px 24px rgba(232,93,4,0.35);
  transition: var(--transition);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-cta-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(232,93,4,0.45); color: #fff; }
.btn-cta-secondary {
  padding: 14px 38px;
  background: transparent;
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1.05rem;
  border: 2px solid rgba(255,255,255,0.3);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-cta-secondary:hover { border-color: #fff; color: #fff; transform: translateY(-2px); }
/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}
.footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo { color: #fff; font-size: 1.25rem; margin-bottom: 14px; display: inline-flex; }
.footer-brand .logo span { color: var(--primary-light); }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a { color: rgba(255,255,255,0.55); font-size: 0.88rem; transition: var(--transition); }
.footer ul li a:hover { color: var(--primary-light); }
.footer ul li a i { width: 20px; margin-right: 4px; }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.84rem;
  color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.45); }
.footer-bottom a:hover { color: var(--primary-light); }
/* ===== Not Found ===== */
.not-found-box {
  text-align: center;
  padding: 80px 20px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; opacity: 0.5; }
.not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
.not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
.not-found-box .btn-back { padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; }
.not-found-box .btn-back:hover { background: var(--primary-dark); color: #fff; }
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .header .container { padding: 0 16px; }
  .nav a { padding: 6px 14px; font-size: 0.85rem; }
  .nav .btn-primary { padding: 6px 16px; font-size: 0.82rem; }
  .article-banner { padding: 60px 0 40px; min-height: 240px; }
  .article-banner h1 { font-size: 1.6rem; }
  .article-content { padding: 24px; }
  .article-content .body-text { font-size: 0.98rem; }
  .article-sidebar { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .article-meta { gap: 12px 20px; font-size: 0.84rem; }
  .sidebar-cta { padding: 24px 18px; }
  .cta-section h2 { font-size: 1.5rem; }
  .btn-cta-primary, .btn-cta-secondary { padding: 12px 28px; font-size: 0.95rem; }
  .mobile-toggle { display: block; }
  .nav { display: none; flex-direction: column; position: absolute; top: var(--header-h); left: 0; width: 100%; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); padding: 16px 24px; box-shadow: var(--shadow-md); border-bottom: 1px solid var(--border-light); }
  .nav.open { display: flex; }
  .nav a { width: 100%; padding: 12px 16px; }
  .nav .btn-primary { margin-left: 0 !important; margin-top: 6px; justify-content: center; }
}
@media (max-width: 520px) {
  .article-banner h1 { font-size: 1.3rem; }
  .article-content { padding: 16px; }
  .article-content .body-text { font-size: 0.92rem; }
  .article-footer-bar { flex-direction: column; align-items: flex-start; }
  .related-card img { height: 150px; }
  .faq-question { font-size: 0.92rem; padding: 14px 18px; }
  .cta-section { padding: 44px 0; }
  .cta-section .btn-group { flex-direction: column; align-items: center; }
}