/* roulang page: index */
:root {
            --primary: #1B2A4A;
            --primary-light: #2D4A7A;
            --secondary: #4A90D9;
            --accent: #FF6B35;
            --accent-light: #FF8A5C;
            --bg: #F5F7FA;
            --bg-white: #FFFFFF;
            --text: #1E2A3A;
            --text-light: #5A6B7D;
            --text-weak: #8A9BAB;
            --border: #E2E8F0;
            --border-light: #F0F2F5;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --glass-bg: rgba(255,255,255,0.75);
            --glass-border: rgba(255,255,255,0.30);
            --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { color: var(--text-light); font-size: 1.1rem; max-width: 640px; margin: 0 auto; }

        /* ===== 导航 ===== */
        header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--nav-height);
            background: var(--glass-bg);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid var(--glass-border);
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
            transition: background var(--transition), box-shadow var(--transition);
        }
        header.scrolled {
            background: rgba(255,255,255,0.92);
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
        }
        nav {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .nav-logo {
            font-size: 1.4rem; font-weight: 800; color: var(--primary);
            letter-spacing: -0.02em; display: flex; align-items: center; gap: 8px;
        }
        .nav-logo i { color: var(--accent); font-size: 1.2rem; }
        .nav-logo:hover { color: var(--primary); opacity: 0.9; }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-weight: 500; font-size: 0.95rem; color: var(--text-light);
            transition: all var(--transition); position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(74,144,217,0.08); }
        .nav-links a.active { color: var(--primary); background: rgba(74,144,217,0.14); font-weight: 600; }
        .nav-links a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 4px; background: var(--secondary);
        }
        .nav-cta {
            padding: 8px 22px; border-radius: 50px; background: var(--secondary);
            color: #fff !important; font-weight: 600; font-size: 0.9rem;
            border: none; cursor: pointer; transition: all var(--transition);
            display: inline-flex; align-items: center; gap: 6px;
        }
        .nav-cta:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(74,144,217,0.35); }
        .nav-cta i { font-size: 0.8rem; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; padding: 4px; }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh; display: flex; align-items: center; justify-content: center;
            background: linear-gradient(135deg, rgba(27,42,74,0.88) 0%, rgba(45,74,122,0.78) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff; text-align: center; padding: 120px 24px 80px; position: relative; overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255,107,53,0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 1; max-width: 800px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 18px; border-radius: 50px; background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.20);
            font-size: 0.85rem; font-weight: 500; margin-bottom: 24px; color: rgba(255,255,255,0.92);
        }
        .hero h1 { color: #fff; margin-bottom: 20px; font-weight: 800; letter-spacing: -0.02em; }
        .hero h1 span { background: linear-gradient(135deg, #FF8A5C, #FF6B35); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.80); max-width: 600px; margin: 0 auto 36px; line-height: 1.7; }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 36px; border-radius: 50px; background: var(--accent);
            color: #fff; font-weight: 700; font-size: 1.05rem; border: none; cursor: pointer;
            transition: all var(--transition); box-shadow: 0 4px 24px rgba(255,107,53,0.35);
        }
        .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(255,107,53,0.45); color: #fff; }
        .btn-secondary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 36px; border-radius: 50px; background: rgba(255,255,255,0.12);
            color: #fff; font-weight: 600; font-size: 1.05rem; border: 1px solid rgba(255,255,255,0.25);
            cursor: pointer; transition: all var(--transition); backdrop-filter: blur(8px);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.20); color: #fff; transform: translateY(-2px); }
        .hero-stats {
            display: flex; gap: 40px; justify-content: center; margin-top: 56px; flex-wrap: wrap;
        }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: #fff; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.65); margin-top: 4px; }

        /* ===== 板块通用 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
        .feature-card {
            background: var(--bg-white); border-radius: var(--radius);
            padding: 36px 28px; box-shadow: var(--shadow); border: 1px solid var(--border-light);
            transition: all var(--transition); text-align: center;
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .feature-card .icon {
            width: 60px; height: 60px; border-radius: 16px;
            background: linear-gradient(135deg, rgba(74,144,217,0.10), rgba(74,144,217,0.04));
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 1.6rem; color: var(--secondary);
        }
        .feature-card h3 { margin-bottom: 10px; }
        .feature-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }

        /* ===== 分类卡片 ===== */
        .category-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
        .cat-card {
            border-radius: var(--radius); overflow: hidden; background: var(--bg-white);
            box-shadow: var(--shadow); border: 1px solid var(--border-light);
            transition: all var(--transition); cursor: pointer;
        }
        .cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .cat-card .img-wrap {
            height: 200px; background: var(--border-light); overflow: hidden;
        }
        .cat-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .cat-card:hover .img-wrap img { transform: scale(1.05); }
        .cat-card .body { padding: 24px; }
        .cat-card .body h3 { margin-bottom: 8px; }
        .cat-card .body p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; margin-bottom: 16px; }
        .cat-card .tag {
            display: inline-block; padding: 4px 14px; border-radius: 50px; background: rgba(74,144,217,0.10);
            color: var(--secondary); font-size: 0.8rem; font-weight: 600;
        }

        /* ===== 最新资讯列表 ===== */
        .news-list { display: grid; gap: 20px; }
        .news-item {
            display: flex; gap: 20px; align-items: flex-start;
            background: var(--bg-white); border-radius: var(--radius-sm);
            padding: 20px 24px; box-shadow: var(--shadow); border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
        .news-item .meta { flex-shrink: 0; color: var(--text-weak); font-size: 0.85rem; min-width: 80px; }
        .news-item .info { flex: 1; }
        .news-item .info h4 { font-size: 1.05rem; margin-bottom: 6px; font-weight: 600; }
        .news-item .info h4 a { color: var(--text); }
        .news-item .info h4 a:hover { color: var(--secondary); }
        .news-item .info p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; }
        .news-item .badge {
            display: inline-block; padding: 2px 12px; border-radius: 50px;
            background: rgba(255,107,53,0.10); color: var(--accent); font-size: 0.75rem; font-weight: 600;
            margin-top: 6px;
        }
        .news-empty {
            text-align: center; padding: 48px 24px; color: var(--text-weak);
            background: var(--bg-white); border-radius: var(--radius); border: 1px dashed var(--border);
        }

        /* ===== 数据/流程 ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 32px; counter-reset: step; }
        .step-card { text-align: center; position: relative; padding: 32px 20px; }
        .step-card::before {
            counter-increment: step; content: counter(step);
            width: 44px; height: 44px; border-radius: 50%;
            background: var(--secondary); color: #fff; font-weight: 800; font-size: 1.2rem;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px; box-shadow: 0 4px 16px rgba(74,144,217,0.25);
        }
        .step-card h4 { margin-bottom: 10px; }
        .step-card p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; }
        .step-connector { display: none; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 16px; }
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-sm);
            border: 1px solid var(--border); overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--border); box-shadow: var(--shadow); }
        .faq-question {
            padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--text);
            display: flex; justify-content: space-between; align-items: center; cursor: pointer;
            background: none; border: none; width: 100%; text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(74,144,217,0.04); }
        .faq-question i { color: var(--text-weak); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-light); font-size: 0.95rem; line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 400px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg); padding: 64px 48px; text-align: center;
            color: #fff; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 70% 40%, rgba(255,107,53,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 { color: #fff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.80); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .btn-primary { background: #fff; color: var(--primary); box-shadow: 0 4px 24px rgba(0,0,0,0.20); }
        .cta-section .btn-primary:hover { background: rgba(255,255,255,0.90); transform: translateY(-2px); }

        /* ===== 页脚 ===== */
        footer {
            background: var(--primary); color: rgba(255,255,255,0.70); padding: 48px 0 32px;
        }
        footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
        footer .brand .logo { color: #fff; font-weight: 800; font-size: 1.3rem; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
        footer .brand .logo i { color: var(--accent); }
        footer .brand p { font-size: 0.9rem; line-height: 1.6; max-width: 360px; }
        footer h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
        footer a { color: rgba(255,255,255,0.65); font-size: 0.9rem; display: block; margin-bottom: 8px; transition: color var(--transition); }
        footer a:hover { color: #fff; }
        footer .copy {
            grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,0.10);
            padding-top: 24px; margin-top: 16px; text-align: center;
            font-size: 0.85rem; color: rgba(255,255,255,0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 2.6rem; }
            footer .container { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-links a.active::after { display: none; }
            .nav-cta { margin-top: 8px; width: 100%; justify-content: center; }
            .nav-toggle { display: block; }
            .hero { min-height: 80vh; padding: 100px 20px 60px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .section { padding: 56px 0; }
            .section-title { margin-bottom: 32px; }
            .features-grid { grid-template-columns: 1fr; }
            .category-cards { grid-template-columns: 1fr; }
            .news-item { flex-direction: column; gap: 12px; padding: 16px 20px; }
            .news-item .meta { min-width: auto; }
            .cta-section { padding: 48px 24px; }
            footer .container { grid-template-columns: 1fr; gap: 28px; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
        }
        @media (max-width: 520px) {
            .nav-logo { font-size: 1.15rem; }
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
            .hero-stat .num { font-size: 1.5rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .faq-question { font-size: 0.9rem; padding: 14px 16px; }
            .faq-answer { font-size: 0.85rem; }
        }
        @media (min-width: 769px) {
            .nav-links { display: flex !important; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --accent: #fdcb6e;
            --bg: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #2d3436;
            --text: #2d3436;
            --text-light: #636e72;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0,0,0,0.08);
            --shadow-hover: 0 16px 48px rgba(108,92,231,0.15);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-top: var(--header-height);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.72);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(108,92,231,0.08);
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        #header nav {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .nav-logo i { font-size: 1.6rem; color: var(--secondary); }
        .nav-logo:hover { color: var(--primary-dark); }
        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover { background: rgba(108,92,231,0.08); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(108,92,231,0.06); }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(108,92,231,0.10);
            font-weight: 600;
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 8px 24px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(108,92,231,0.25);
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108,92,231,0.35);
            color: #fff;
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, rgba(108,92,231,0.06) 0%, rgba(253,121,168,0.06) 100%);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--text-light); }
        .article-breadcrumb a:hover { color: var(--primary); }
        .article-breadcrumb .sep { color: #bbb; }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text);
            max-width: 900px;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i { font-size: 0.85rem; color: var(--primary-light); }
        .article-category {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(108,92,231,0.10);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* ===== Article Main Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 48px 52px;
            box-shadow: var(--shadow);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body .content p { margin-bottom: 1.4rem; color: var(--text); }
        .article-body .content h2 { margin-top: 2.4rem; margin-bottom: 1rem; }
        .article-body .content h3 { margin-top: 2rem; margin-bottom: 0.8rem; }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.4rem; padding-left: 1.6rem; list-style: disc; }
        .article-body .content ol { list-style: decimal; }
        .article-body .content li { margin-bottom: 0.4rem; color: var(--text); }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.6rem 0; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            background: rgba(108,92,231,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(108,92,231,0.06);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: rgba(108,92,231,0.14); }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            color: var(--text);
            font-weight: 500;
            transition: var(--transition);
            max-width: 48%;
        }
        .article-nav a:hover { background: rgba(108,92,231,0.08); color: var(--primary); }
        .article-nav a i { font-size: 0.9rem; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text);
            font-weight: 500;
            font-size: 0.95rem;
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list a img {
            width: 60px;
            height: 60px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-list .s-title { display: block; line-height: 1.4; }
        .sidebar-list .s-date {
            display: block;
            font-size: 0.8rem;
            color: var(--text-light);
            font-weight: 400;
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h3 { color: #fff; }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 0.95rem; margin-bottom: 20px; }
        .sidebar-cta .btn {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 40px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg-white);
            padding: 60px 0;
        }
        .related-section h2 {
            text-align: center;
            margin-bottom: 12px;
        }
        .related-section .subtitle {
            text-align: center;
            color: var(--text-light);
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .related-card .info { padding: 20px 22px 24px; }
        .related-card .info h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .related-card .info h4 a { color: var(--text); }
        .related-card .info h4 a:hover { color: var(--primary); }
        .related-card .info p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .info .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            gap: 12px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(108,92,231,0.04), rgba(253,121,168,0.04));
            text-align: center;
        }
        .cta-section h2 { font-size: 2rem; margin-bottom: 12px; }
        .cta-section p { max-width: 600px; margin: 0 auto 32px; color: var(--text-light); }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 6px 24px rgba(108,92,231,0.3);
            transition: var(--transition);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(108,92,231,0.4); color: #fff; }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 40px;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .faq-section h2 { text-align: center; margin-bottom: 40px; }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--bg);
            transition: var(--transition);
        }
        .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: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item[open] summary { background: rgba(108,92,231,0.04); }
        .faq-item .answer {
            padding: 0 24px 18px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Footer ===== */
        footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        footer .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        footer .logo i { color: var(--secondary); }
        footer .brand p { font-size: 0.95rem; color: rgba(255,255,255,0.6); line-height: 1.7; }
        footer h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        footer a {
            display: block;
            color: rgba(255,255,255,0.6);
            margin-bottom: 10px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        footer a:hover { color: var(--primary-light); padding-left: 4px; }
        footer .copy {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 24px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found i { font-size: 4rem; color: var(--primary-light); margin-bottom: 24px; }
        .not-found h2 { font-size: 2rem; margin-bottom: 12px; }
        .not-found p { color: var(--text-light); margin-bottom: 24px; }
        .not-found .btn { display: inline-block; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 40px rgba(0,0,0,0.08);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; text-align: center; padding: 12px 18px; }
            .nav-links a.nav-cta { margin-top: 8px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .article-banner { padding: 50px 0 40px; }
            .article-banner h1 { font-size: 1.8rem; }
            .article-body { padding: 28px 20px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            footer .container { grid-template-columns: 1fr; gap: 32px; }
            .article-nav a { max-width: 100%; flex: 1; }
        }
        @media (max-width: 520px) {
            :root { --header-height: 64px; }
            .container { padding: 0 16px; }
            .article-banner h1 { font-size: 1.5rem; }
            .article-body { padding: 20px 16px; }
            .article-meta { flex-direction: column; gap: 8px; }
            .related-card img { height: 160px; }
            .cta-section h2 { font-size: 1.5rem; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --secondary-light: #fdcb6e;
            --accent: #00cec9;
            --bg-body: #f8f9ff;
            --bg-card: #ffffff;
            --bg-dark: #2d3436;
            --bg-soft: #f0f0ff;
            --text-primary: #2d3436;
            --text-secondary: #636e72;
            --text-light: #b2bec3;
            --text-inverse: #ffffff;
            --border: #e0e0ff;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
            --shadow-md: 0 6px 24px rgba(108, 92, 231, 0.12);
            --shadow-lg: 0 16px 48px rgba(108, 92, 231, 0.18);
            --shadow-hover: 0 12px 36px rgba(108, 92, 231, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--nav-height);
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.6;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--primary);
            background: rgba(108, 92, 231, 0.1);
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 92, 231, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(108, 92, 231, 0.3);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }
        .btn-white:hover {
            background: var(--bg-soft);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
        }

        .badge {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            background: var(--bg-soft);
            color: var(--primary);
            transition: var(--transition);
        }
        .badge-hot {
            background: #ffeaa7;
            color: #d63031;
        }
        .badge-new {
            background: #dfe6e9;
            color: #00b894;
        }
        .badge-tip {
            background: #a29bfe;
            color: #fff;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 16px;
        }
        .card-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }

        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card .meta {
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .card .meta i {
            margin-right: 4px;
        }

        /* ===== Header / Navigation ===== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(108, 92, 231, 0.12);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            transition: var(--transition);
        }

        #header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 30px rgba(108, 92, 231, 0.12);
        }

        #header nav {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .nav-logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .nav-logo:hover {
            color: var(--primary-dark);
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 50px;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(108, 92, 231, 0.08);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(108, 92, 231, 0.12);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-links .nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
        }
        .nav-links .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.4);
        }
        .nav-links .nav-cta:active {
            transform: translateY(0);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 120px 0 100px;
            background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #fd79a8 100%);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 80px;
            background: var(--bg-body);
            clip-path: ellipse(70% 100% at 50% 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .category-hero p {
            font-size: 1.2rem;
            max-width: 640px;
            margin: 0 auto 32px;
            opacity: 0.92;
            line-height: 1.6;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
        }
        .category-hero .hero-badges {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .category-hero .hero-badges span {
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        /* ===== Category Intro ===== */
        .intro-section {
            background: var(--bg-card);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-grid .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .intro-grid .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .intro-grid .intro-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .intro-grid .intro-content p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .intro-grid .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .intro-grid .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-primary);
            background: var(--bg-soft);
            padding: 10px 16px;
            border-radius: var(--radius-sm);
        }
        .intro-grid .intro-features li i {
            color: var(--primary);
            font-size: 1.1rem;
        }

        /* ===== Guide Categories ===== */
        .guide-categories {
            background: var(--bg-soft);
        }
        .guide-categories .card {
            text-align: center;
            padding: 36px 24px;
        }
        .guide-categories .card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: #fff;
            transition: var(--transition);
        }
        .guide-categories .card:hover .icon {
            transform: scale(1.1) rotate(-4deg);
        }
        .guide-categories .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .guide-categories .card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .guide-categories .card .badge {
            background: var(--bg-soft);
        }

        /* ===== Hot Guides ===== */
        .hot-guides {
            background: var(--bg-card);
        }
        .hot-guides .card {
            padding: 0;
            overflow: hidden;
        }
        .hot-guides .card .card-img img {
            height: 180px;
        }
        .hot-guides .card .card-body {
            padding: 20px 24px 24px;
        }
        .hot-guides .card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .hot-guides .card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .hot-guides .card .card-body .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .hot-guides .card .card-body .meta span {
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .hot-guides .card .card-body .meta a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }
        .hot-guides .card .card-body .meta a:hover {
            color: var(--primary-dark);
        }

        /* ===== Process / Steps ===== */
        .process-section {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .process-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .process-section .container {
            position: relative;
            z-index: 2;
        }
        .process-section .section-title {
            color: #fff;
        }
        .process-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .step {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
            position: relative;
        }
        .step:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
        }
        .step .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.4);
        }
        .step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.5;
        }
        .step .step-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.4rem;
            color: var(--primary-light);
            opacity: 0.5;
        }
        .step:last-child .step-arrow {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .faq-item {
            background: var(--bg-soft);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4 i {
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-left: 26px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #fff;
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.15rem;
            max-width: 560px;
            margin: 0 auto 32px;
            opacity: 0.9;
        }
        .cta-section .btn-white {
            padding: 14px 40px;
            font-size: 1.1rem;
        }
        .cta-section .btn-white:hover {
            transform: translateY(-3px) scale(1.02);
        }

        /* ===== Footer ===== */
        footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 32px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer .brand .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        footer .brand .logo i {
            color: var(--secondary);
        }
        footer .brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }
        footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        footer a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            padding: 4px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        footer a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        footer .copy {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 32px;
            margin-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .step .step-arrow {
                display: none;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-grid .intro-image img {
                height: 280px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero h1 {
                font-size: 2.6rem;
            }
            .section-title {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links .nav-cta {
                text-align: center;
                margin-top: 8px;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-hero {
                padding: 100px 0 80px;
                min-height: 340px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section-padding {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .intro-grid .intro-features {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            footer .brand p {
                max-width: 100%;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .faq-item h4 {
                font-size: 0.98rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-badges span {
                font-size: 0.8rem;
                padding: 6px 14px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 24px;
                font-size: 0.92rem;
            }
            .card {
                padding: 20px;
            }
            .card .card-img img {
                height: 160px;
            }
            .step {
                padding: 24px 16px;
            }
            .faq-item {
                padding: 18px 20px;
            }
            .cta-section {
                padding: 56px 0;
            }
            footer {
                padding: 40px 0 24px;
            }
        }