/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b2a3a;
            --primary-dark: #070f1a;
            --accent: #d4a762;
            --accent-light: #e8c88a;
            --accent-dark: #b8893e;
            --bg-light: #f8f9fa;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.04);
            --shadow-xl: 0 20px 48px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-dark); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-dark); margin-bottom: 0.5rem; }
        p { margin-bottom: 1rem; color: var(--text-body); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; width: 100%; }
        .container-fluid { width: 100%; padding: 0 24px; }
        section { padding: 80px 0; }
        .section-title { font-size: 2rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text-dark); }
        .section-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 640px; margin: 0 auto 3rem; text-align: center; }
        .text-center { text-align: center; }
        .text-accent { color: var(--accent); }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .site-logo i { color: var(--accent); font-size: 1.6rem; }
        .site-logo:hover { color: var(--primary); }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main { display: flex; align-items: center; gap: 4px; }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-main a i { font-size: 0.85rem; opacity: 0.7; }
        .nav-main a:hover { color: var(--primary); background: rgba(13,27,42,0.06); }
        .nav-main a.active { color: var(--primary); background: rgba(13,27,42,0.08); font-weight: 600; }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            width: 200px;
            transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(212,167,98,0.15); width: 240px; }
        .nav-search i { color: var(--text-light); font-size: 0.9rem; margin-right: 8px; }
        .nav-search input { border: none; background: transparent; width: 100%; height: 100%; font-size: 0.875rem; color: var(--text-dark); }
        .nav-search input::placeholder { color: var(--text-light); }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.875rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(212,167,98,0.35); color: #fff; }
        .navbar-toggler { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; padding: 4px 8px; }

        /* ===== Hero ===== */
        .hero {
            padding: 160px 0 100px;
            position: relative;
            background: var(--primary-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            min-height: 620px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.88) 0%, rgba(13,27,42,0.60) 60%, rgba(212,167,98,0.20) 100%);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 700px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 40px;
            background: rgba(212,167,98,0.18);
            color: var(--accent-light);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 1.25rem;
            border: 1px solid rgba(212,167,98,0.20);
        }
        .hero-badge i { font-size: 0.7rem; }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .hero h1 .highlight { color: var(--accent); }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.80);
            max-width: 580px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border: none;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-hero-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,167,98,0.40); color: #fff; }
        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            background: rgba(255,255,255,0.10);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.20);
            transition: var(--transition);
            cursor: pointer;
            backdrop-filter: blur(4px);
        }
        .btn-hero-secondary:hover { background: rgba(255,255,255,0.18); color: #fff; border-color: rgba(255,255,255,0.30); }
        .hero-stats { display: flex; gap: 40px; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.12); }
        .hero-stat h3 { font-size: 1.8rem; font-weight: 700; color: #fff; margin-bottom: 0; }
        .hero-stat h3 i { color: var(--accent); font-size: 1.2rem; margin-right: 4px; }
        .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.60); margin-bottom: 0; }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card-custom:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-custom .card-body { padding: 28px; }
        .card-custom .card-img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius-md) var(--radius-md) 0 0; }
        .card-custom .card-title { font-size: 1.15rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
        .card-custom .card-text { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; }
        .card-custom .card-meta { font-size: 0.8rem; color: var(--text-light); display: flex; align-items: center; gap: 12px; }
        .card-custom .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(212,167,98,0.12);
            color: var(--accent-dark);
        }

        /* ===== 核心优势 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: var(--transition);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(212,167,98,0.12), rgba(212,167,98,0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            color: var(--accent);
        }
        .feature-card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
        .feature-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--primary-dark);
            min-height: 280px;
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.45;
            transition: var(--transition);
        }
        .category-card:hover .cat-bg { opacity: 0.30; transform: scale(1.05); }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.80) 0%, rgba(13,27,42,0.30) 100%);
            z-index: 1;
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 40px 32px;
            color: #fff;
            width: 100%;
        }
        .category-card .cat-icon { font-size: 2.2rem; color: var(--accent); margin-bottom: 0.75rem; }
        .category-card h3 { font-size: 1.5rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
        .category-card p { font-size: 0.9rem; color: rgba(255,255,255,0.75); margin-bottom: 1rem; max-width: 320px; }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 40px;
            background: var(--accent);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .category-card .cat-link:hover { background: var(--accent-dark); color: #fff; transform: translateX(4px); }

        /* ===== 最新资讯 ===== */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .news-card .news-img {
            width: 120px;
            min-width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            background: var(--bg-light);
        }
        .news-card .news-body { flex: 1; min-width: 0; }
        .news-card .news-cat {
            display: inline-block;
            padding: 1px 10px;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 500;
            background: rgba(212,167,98,0.12);
            color: var(--accent-dark);
            margin-bottom: 6px;
        }
        .news-card .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .news-card .news-title a { color: var(--text-dark); }
        .news-card .news-title a:hover { color: var(--accent); }
        .news-card .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }
        .news-card .news-meta {
            font-size: 0.75rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            background: var(--bg-card);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
        }
        .news-empty i { font-size: 2.4rem; color: var(--text-light); margin-bottom: 12px; display: block; }

        /* ===== 使用流程 ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 8px rgba(212,167,98,0.30);
        }
        .step-card .step-icon { font-size: 2rem; color: var(--accent); margin-bottom: 0.75rem; margin-top: 0.5rem; }
        .step-card h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
        .step-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; 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-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i { color: var(--accent); font-size: 0.9rem; transition: var(--transition); flex-shrink: 0; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.88) 0%, rgba(13,27,42,0.70) 100%);
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-content { text-align: center; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: 0.75rem; }
        .cta-content p { font-size: 1.05rem; color: rgba(255,255,255,0.75); margin-bottom: 2rem; }
        .cta-buttons { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-cta-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,167,98,0.40); color: #fff; }
        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            background: rgba(255,255,255,0.10);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.20);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-cta-secondary:hover { background: rgba(255,255,255,0.18); color: #fff; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.70);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .site-footer .footer-brand .logo-text { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
        .site-footer .footer-brand .logo-text i { color: var(--accent); }
        .site-footer .footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.55); max-width: 300px; margin-bottom: 1rem; }
        .site-footer h5 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 1rem; }
        .site-footer ul li { margin-bottom: 8px; }
        .site-footer ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.60); transition: var(--transition); }
        .site-footer ul li a:hover { color: var(--accent); padding-left: 4px; }
        .site-footer .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.40);
        }
        .site-footer .footer-bottom a { color: rgba(255,255,255,0.50); }
        .site-footer .footer-bottom a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px; height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.50);
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: #fff; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
            .nav-search { width: 140px; }
            .nav-search:focus-within { width: 180px; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .navbar-toggler { display: block; }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                align-items: stretch;
                gap: 0;
            }
            .nav-main.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-main a { padding: 12px 16px; border-radius: var(--radius-sm); justify-content: flex-start; }
            .nav-main a.active::after { display: none; }
            .nav-actions .nav-search { display: none; }
            .btn-nav-cta { padding: 6px 16px; font-size: 0.8rem; }
            .hero { padding: 120px 0 60px; min-height: auto; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 1.4rem; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .news-card { flex-direction: column; }
            .news-card .news-img { width: 100%; min-width: auto; height: 160px; }
            .steps-grid { grid-template-columns: 1fr; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .faq-question { font-size: 0.9rem; padding: 14px 18px; }
            .faq-answer { padding: 0 18px 14px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn-hero-primary,
            .hero-actions .btn-hero-secondary { width: 100%; justify-content: center; }
            .cta-buttons { flex-direction: column; }
            .cta-buttons .btn-cta-primary,
            .cta-buttons .btn-cta-secondary { width: 100%; justify-content: center; }
            .category-card .cat-content { padding: 28px 20px; }
            .category-card h3 { font-size: 1.2rem; }
            .feature-card { padding: 24px 20px; }
            .step-card { padding: 24px 16px; }
        }

        /* ===== 辅助 ===== */
        .bg-soft-accent { background: rgba(212,167,98,0.04); }
        .border-accent { border-color: var(--accent) !important; }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .gap-4 { gap: 24px; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .fw-600 { font-weight: 600; }
        .fw-700 { font-weight: 700; }
        .text-sm { font-size: 0.85rem; }
        .text-xs { font-size: 0.75rem; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a237e;
            --primary-light: #283593;
            --primary-dark: #0d1452;
            --accent: #f57c00;
            --accent-light: #ff9800;
            --accent-dark: #e65100;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-light: #eef0f7;
            --bg-dark: #0d1452;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-light: #6b6b8a;
            --text-white: #ffffff;
            --border-color: #e0e3ed;
            --border-light: #f0f2f8;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 35, 126, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 35, 126, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 35, 126, 0.14);
            --shadow-hover: 0 12px 40px rgba(245, 124, 0, 0.18);
            --transition: all 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 76px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }

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

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1050;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            text-decoration: none;
            flex-shrink: 0;
        }
        .site-logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            color: var(--primary-dark);
            opacity: 0.9;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }
        .nav-main a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-main a.active {
            color: var(--primary-dark);
            background: rgba(26, 35, 126, 0.08);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 4px 4px 0 0;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-light);
            border-radius: 40px;
            padding: 6px 16px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--accent-light);
            background: var(--bg-white);
            box-shadow: 0 0 0 3px rgba(245, 124, 0, 0.10);
        }
        .nav-search i {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            padding: 4px 0;
            width: 130px;
            font-size: 0.9rem;
            color: var(--text-dark);
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 14px rgba(245, 124, 0, 0.30);
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 124, 0, 0.40);
            color: #fff;
        }
        .btn-nav-cta i {
            font-size: 0.8rem;
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--bg-light);
        }

        /* ===== Mobile Nav ===== */
        @media (max-width: 1024px) {
            .nav-search input {
                width: 90px;
            }
        }
        @media (max-width: 868px) {
            .navbar-toggler {
                display: block;
            }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-main a.active::after {
                display: none;
            }
            .nav-main a.active {
                background: rgba(26, 35, 126, 0.08);
                border-left: 4px solid var(--accent);
            }
            .nav-actions {
                gap: 10px;
            }
            .nav-search input {
                width: 80px;
            }
            .btn-nav-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .btn-nav-cta span {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .nav-search {
                display: none;
            }
            .btn-nav-cta {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .site-logo span {
                font-size: 1rem;
            }
            .site-logo i {
                font-size: 1.2rem;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 60%, #1e3a8a 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .page-banner .banner-tags span {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: rgba(255, 255, 255, 0.95);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }
        .page-banner .banner-tags span i {
            margin-right: 6px;
            opacity: 0.8;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-tags span {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }
        .breadcrumb-area .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            padding: 0;
            background: transparent;
        }
        .breadcrumb-area .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb-area .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb-area .breadcrumb .separator {
            color: var(--text-light);
            opacity: 0.5;
        }
        .breadcrumb-area .breadcrumb .current {
            color: var(--text-body);
            font-weight: 500;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .badge-title {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(245, 124, 0, 0.10);
            color: var(--accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== Cards ===== */
        .card-guide {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
        }
        .card-guide:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-guide .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--text-white);
            margin-bottom: 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }
        .card-guide .card-icon.accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        }
        .card-guide .card-icon.teal {
            background: linear-gradient(135deg, #00796b, #009688);
        }
        .card-guide .card-icon.purple {
            background: linear-gradient(135deg, #6a1b9a, #8e24aa);
        }
        .card-guide h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .card-guide p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .card-guide .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .card-guide .tag-group .badge-tag {
            padding: 3px 12px;
            border-radius: 40px;
            background: var(--bg-light);
            color: var(--text-light);
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== Steps ===== */
        .steps-wrapper {
            position: relative;
            counter-reset: step-counter;
        }
        .step-item {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border-light);
            counter-increment: step-counter;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(245, 124, 0, 0.25);
        }
        .step-content {
            flex: 1;
        }
        .step-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .step-content p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .step-content .step-tip {
            display: inline-block;
            margin-top: 8px;
            padding: 4px 14px;
            border-radius: 40px;
            background: rgba(245, 124, 0, 0.08);
            color: var(--accent-dark);
            font-size: 0.8rem;
            font-weight: 500;
        }
        @media (max-width: 600px) {
            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px 0;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        /* ===== Login Methods Grid ===== */
        .method-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
        }
        .method-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .method-card .method-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .method-card .method-icon.accent {
            color: var(--accent);
        }
        .method-card .method-icon.teal {
            color: #009688;
        }
        .method-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .method-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .method-card .btn-method {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 40px;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .method-card .btn-method:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-light);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        @media (max-width: 600px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== Safety Tips ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }
        .safety-item {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(6px);
            border-radius: var(--radius-sm);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.10);
            transition: var(--transition);
        }
        .safety-item:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-2px);
        }
        .safety-item i {
            font-size: 2rem;
            color: var(--accent-light);
            margin-bottom: 12px;
        }
        .safety-item h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .safety-item p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.85rem;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            border-radius: 40px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: 0 6px 24px rgba(245, 124, 0, 0.35);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 124, 0, 0.50);
            color: #fff;
            background: var(--accent-dark);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .logo-text i {
            color: var(--accent-light);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.60);
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.70);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .site-footer ul {
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .site-footer ul li i {
            margin-right: 8px;
            color: var(--accent-light);
            opacity: 0.7;
            width: 16px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }
        @media (max-width: 968px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== Utility ===== */
        .bg-white {
            background: var(--bg-white);
        }
        .bg-light {
            background: var(--bg-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
        }
        .bg-dark-section .section-header h2 {
            color: #fff;
        }
        .bg-dark-section .section-header p {
            color: rgba(255, 255, 255, 0.70);
        }
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .gap-3 {
            gap: 24px;
        }

        /* ===== Responsive grid overrides ===== */
        @media (max-width: 768px) {
            .row-cols-1>div {
                flex: 0 0 100%;
                max-width: 100%;
            }
        }

        /* ===== Float animation ===== */
        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        .float-anim {
            animation: float 3s ease-in-out infinite;
        }

        /* ===== Scroll margin for anchor ===== */
        .anchor-offset {
            scroll-margin-top: calc(var(--header-height) + 16px);
        }

/* roulang page: article */
:root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --accent: #3b82f6;
            --bg-light: #f8f9fc;
            --bg-dark: #0f1a4a;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #f8f9fc;
            --border-color: #e5e7eb;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }

        /* ===== Header ===== */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 20px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(0,0,0,0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            flex-shrink: 0;
        }
        .site-logo i { color: var(--secondary); font-size: 1.5rem; }
        .site-logo:hover { color: var(--primary); }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a i { font-size: 0.9rem; color: var(--text-muted); }
        .nav-main a:hover { background: rgba(26,42,108,0.06); color: var(--primary); }
        .nav-main a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26,42,108,0.25);
        }
        .nav-main a.active i { color: #fff; }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 40px;
            padding: 6px 16px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            min-width: 180px;
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,42,108,0.1); }
        .nav-search i { color: var(--text-muted); font-size: 0.9rem; margin-right: 8px; }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            color: var(--text-dark);
            width: 100%;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--secondary), #d4922a);
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(232,168,56,0.35);
            border: none;
            text-decoration: none;
        }
        .btn-nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,56,0.45); color: #fff; }
        .navbar-toggler {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero .container-narrow { position: relative; z-index: 2; width: 100%; }
        .article-hero .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 16px;
            font-size: 0.9rem;
        }
        .article-hero .breadcrumb-item a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb-item a:hover { color: var(--secondary); }
        .article-hero .breadcrumb-item.active { color: rgba(255,255,255,0.9); }
        .article-hero .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.15);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: rgba(255,255,255,0.85);
            font-size: 0.95rem;
        }
        .article-meta .badge-category {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-meta i { margin-right: 6px; }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 700;
            color: var(--primary-dark);
        }
        .article-body h2 { font-size: 1.6rem; }
        .article-body h3 { font-size: 1.3rem; }
        .article-body p { margin-bottom: 1.2em; }
        .article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.5em; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5em 0; box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
        }
        .article-body a { color: var(--accent); text-decoration: underline; }
        .article-body a:hover { color: var(--secondary); }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
        }
        .article-body th, .article-body td {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            text-align: left;
        }
        .article-body th { background: var(--bg-light); font-weight: 600; }
        .article-body code {
            background: #f1f3f5;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #d63384;
        }
        .article-body pre {
            background: #1a1a2e;
            color: #e4e4ef;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 1.5em 0;
        }
        .article-body pre code { background: transparent; color: inherit; padding: 0; }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .article-not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); color: #fff; }

        /* ===== Related / Bottom ===== */
        .article-bottom {
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            transition: var(--transition);
            color: var(--text-dark);
            font-weight: 500;
            max-width: 48%;
        }
        .article-nav a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .article-nav a i { font-size: 0.9rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 30px;
            border-top: 4px solid var(--secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-text i { color: var(--secondary); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; color: rgba(255,255,255,0.65); margin-bottom: 20px; max-width: 360px; }
        .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(255,255,255,0.7);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .footer-social a:hover { background: var(--secondary); color: var(--primary-dark); transform: translateY(-3px); }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer ul { list-style: none; padding: 0; margin: 0; }
        .site-footer ul li { margin-bottom: 10px; font-size: 0.9rem; }
        .site-footer ul li a { color: rgba(255,255,255,0.65); transition: var(--transition); }
        .site-footer ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .site-footer ul li i { width: 20px; margin-right: 8px; color: var(--secondary); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .article-body { padding: 36px 32px; }
        }
        @media (max-width: 768px) {
            .site-header .container { height: 64px; }
            .navbar-toggler { display: block; }
            .nav-main {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                box-shadow: 0 20px 40px rgba(0,0,0,0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                z-index: 1040;
                gap: 4px;
            }
            .nav-main.open { transform: translateY(0); opacity: 1; }
            .nav-main a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav-actions { display: none; }
            .nav-actions.mobile-open { 
                display: flex; 
                flex-direction: column;
                width: 100%;
                padding: 12px 24px 20px;
                background: #fff;
                position: fixed;
                top: auto;
                left: 0;
                right: 0;
                bottom: 0;
                box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
                border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            }
            .nav-search { min-width: unset; width: 100%; }
            .btn-nav-cta { width: 100%; justify-content: center; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero { padding: 50px 0 40px; min-height: 200px; }
            .article-body { padding: 24px 20px; font-size: 0.98rem; }
            .article-meta { gap: 12px; font-size: 0.85rem; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-body { padding: 18px 14px; }
            .site-logo span { font-size: 1rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1b33;
            --primary-light: #1a2d5a;
            --secondary: #f0b90b;
            --secondary-hover: #d4a308;
            --accent: #7c4dff;
            --accent-light: #a07dff;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0a1428;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #6b7a8f;
            --text-light: #f0f4ff;
            --border-color: #e2e8f0;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 27, 51, 0.10);
            --shadow-lg: 0 12px 48px rgba(15, 27, 51, 0.14);
            --shadow-xl: 0 24px 64px rgba(15, 27, 51, 0.18);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 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-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
        }

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

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
            transition: transform 0.3s ease;
        }
        .site-logo:hover i {
            transform: rotate(20deg) scale(1.1);
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .site-logo span {
            white-space: nowrap;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--border-radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-main a i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-main a:hover {
            background: rgba(15, 27, 51, 0.05);
            color: var(--primary);
        }
        .nav-main a:hover i {
            color: var(--secondary);
        }
        .nav-main a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--secondary);
            border-radius: 3px 3px 0 0;
        }
        .nav-main a.active i {
            color: var(--secondary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-body);
            border-radius: 100px;
            padding: 6px 16px 6px 14px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.15);
        }
        .nav-search i {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 4px 0;
            width: 120px;
            font-size: 0.9rem;
            color: var(--text-dark);
            outline: none;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--secondary), #e6a800);
            color: var(--primary);
            border: none;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 2px 12px rgba(240, 185, 11, 0.35);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(240, 185, 11, 0.45);
            color: var(--primary);
            background: linear-gradient(135deg, #f5c42a, #d4a308);
        }
        .btn-nav-cta i {
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .btn-nav-cta:hover i {
            transform: translateX(4px);
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            background: rgba(15, 27, 51, 0.05);
        }

        /* ===== Hero ===== */
        .hero-section {
            padding-top: var(--header-height);
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, #0a1428 0%, #1a2d5a 60%, #2a1a4a 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
            animation: heroBgFade 20s ease-in-out infinite alternate;
        }
        @keyframes heroBgFade {
            0% { opacity: 0.20; transform: scale(1); }
            100% { opacity: 0.35; transform: scale(1.05); }
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 24px 100px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            border-radius: 100px;
            background: rgba(240, 185, 11, 0.15);
            color: var(--secondary);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(240, 185, 11, 0.25);
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-light);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--secondary), #ffd700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            padding: 14px 36px;
            border-radius: 100px;
            font-size: 1.05rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--secondary), #e6a800);
            color: var(--primary);
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(240, 185, 11, 0.4);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(240, 185, 11, 0.55);
        }
        .hero-actions .btn-primary i {
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover i {
            transform: translateX(4px);
        }
        .hero-actions .btn-outline {
            padding: 14px 36px;
            border-radius: 100px;
            font-size: 1.05rem;
            font-weight: 600;
            background: transparent;
            color: var(--text-light);
            border: 2px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(240, 185, 11, 0.08);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 60px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ===== Section Shared ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        /* ===== Overview / Stats ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .overview-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .overview-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .overview-card .icon {
            font-size: 2.2rem;
            color: var(--secondary);
            margin-bottom: 16px;
        }
        .overview-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
        }
        .overview-card .label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Guide Cards ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .guide-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(15, 27, 51, 0.8);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .guide-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .guide-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .card-body .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--accent);
            font-size: 0.9rem;
            transition: var(--transition);
            align-self: flex-start;
        }
        .guide-card .card-body .btn-link:hover {
            color: var(--accent-light);
            gap: 12px;
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--primary);
            color: var(--text-light);
        }
        .steps-section .section-title {
            color: var(--text-light);
        }
        .steps-section .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .steps-section .section-divider {
            background: linear-gradient(90deg, var(--secondary), #ffd700);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .step-item .step-num {
            counter-increment: step;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), #e6a800);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(240, 185, 11, 0.3);
        }
        .step-item .step-num::before {
            content: counter(step);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .step-item p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }

        /* ===== Content Area (图文) ===== */
        .content-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .content-area.reverse {
            direction: rtl;
        }
        .content-area.reverse>* {
            direction: ltr;
        }
        .content-area .text-block h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .content-area .text-block p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .content-area .text-block ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }
        .content-area .text-block ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .content-area .text-block ul li i {
            color: var(--secondary);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .content-area .media-block img {
            width: 100%;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-lg);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--secondary);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: var(--bg-body);
            transition: var(--transition);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-item summary:hover {
            background: rgba(240, 185, 11, 0.05);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0a1428 0%, #1a2d5a 50%, #2a1a4a 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 44px;
            border-radius: 100px;
            font-size: 1.1rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--secondary), #e6a800);
            color: var(--primary);
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 28px rgba(240, 185, 11, 0.4);
            text-decoration: none;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(240, 185, 11, 0.55);
        }
        .cta-section .btn-cta i {
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover i {
            transform: translateX(4px);
        }

        /* ===== Related Resources ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-item {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--secondary);
        }
        .related-item .icon {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 14px;
        }
        .related-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .related-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .related-item a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-weight: 600;
            color: var(--accent);
            font-size: 0.9rem;
        }
        .related-item a:hover {
            color: var(--accent-light);
            gap: 10px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo-text i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary);
            transform: translateY(-3px);
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--secondary);
        }
        .site-footer ul li i {
            margin-right: 8px;
            color: var(--secondary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: var(--bg-body);
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb-bar a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb-bar a:hover {
            color: var(--accent);
        }
        .breadcrumb-bar span {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb-bar .sep {
            color: var(--text-muted);
            font-size: 0.75rem;
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--secondary);
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .overview-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .site-header .container {
                flex-wrap: wrap;
            }
            .navbar-toggler {
                display: block;
                order: 3;
            }
            .nav-main {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.3s ease;
            }
            .nav-main.open {
                display: flex;
                max-height: 400px;
                padding: 16px 24px 24px;
            }
            .nav-main a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--border-radius-sm);
            }
            .nav-main a.active::after {
                display: none;
            }
            .nav-main a.active {
                background: rgba(240, 185, 11, 0.10);
            }
            .nav-actions {
                display: none;
            }
            .nav-actions.open {
                display: flex;
                flex-direction: column;
                width: 100%;
                padding: 12px 0 16px;
                gap: 12px;
                order: 4;
            }
            .nav-actions.open .nav-search {
                width: 100%;
            }
            .nav-actions.open .nav-search input {
                width: 100%;
            }
            .nav-actions.open .btn-nav-cta {
                width: 100%;
                justify-content: center;
            }

            .hero-title {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat .num {
                font-size: 1.8rem;
            }

            .section-padding {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .content-area {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .content-area.reverse {
                direction: ltr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .overview-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .overview-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .overview-card {
                padding: 20px 16px;
            }
            .overview-card .num {
                font-size: 1.5rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
            }
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        /* ===== Utility ===== */
        .bg-light-alt {
            background: var(--bg-body);
        }
        .bg-white {
            background: #fff;
        }
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }