/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #D4A843;
            --color-primary-dark: #B8860B;
            --color-primary-light: #E8C96A;
            --color-secondary: #C0392B;
            --color-secondary-dark: #922B21;
            --color-accent: #E74C3C;
            --color-dark: #1A1A2E;
            --color-dark-mid: #2C2C42;
            --color-dark-light: #3D3D56;
            --color-bg: #FAFAFA;
            --color-bg-alt: #F3F1EC;
            --color-bg-card: #FFFFFF;
            --color-text: #1A1A2E;
            --color-text-weak: #6B6B80;
            --color-text-inverse: #FFFFFF;
            --color-border: #E5E3DE;
            --color-border-strong: #D4A843;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26,26,46,0.06);
            --shadow-md: 0 6px 24px rgba(26,26,46,0.08);
            --shadow-lg: 0 16px 48px rgba(26,26,46,0.12);
            --shadow-glow: 0 0 30px rgba(212,168,67,0.25);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 80px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        /* ===== 基础重置 ===== */
        *, *::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(--color-text);
            background: var(--color-bg);
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-dark); }
        h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
        h4 { font-size: 1.125rem; }
        p { margin-bottom: 1em; color: var(--color-text-weak); }
        p:last-child { margin-bottom: 0; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        @media (max-width: 768px) {
            .container { padding: 0 var(--spacing-md); }
        }

        /* ===== 导航栏 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 4px rgba(26,26,46,0.04);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-dark);
            letter-spacing: -0.02em;
        }
        .logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.2rem;
        }
        .logo span { background: linear-gradient(135deg, var(--color-dark), var(--color-primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav { display: flex; align-items: center; gap: var(--spacing-xl); }
        .nav-links { display: flex; align-items: center; gap: var(--spacing-lg); }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-weak);
            padding: var(--spacing-xs) 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-links a:hover { color: var(--color-dark); }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a.active { color: var(--color-primary-dark); font-weight: 600; }
        .nav-links a.active::after { width: 100%; background: var(--color-primary); }
        .nav-actions { display: flex; align-items: center; gap: var(--spacing-md); }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border-radius: 50px;
            padding: 6px 16px;
            gap: 8px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--color-primary); background: #fff; box-shadow: var(--shadow-sm); }
        .search-box input { background: none; padding: 4px 0; width: 140px; color: var(--color-dark); }
        .search-box input::placeholder { color: var(--color-text-weak); }
        .search-box button { color: var(--color-text-weak); font-size: 0.95rem; transition: var(--transition); }
        .search-box button:hover { color: var(--color-primary); }
        .btn-cta-nav {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(212,168,67,0.3);
            white-space: nowrap;
        }
        .btn-cta-nav:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,67,0.4); color: #fff; }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--color-dark); cursor: pointer; padding: 4px; }
        @media (max-width: 768px) {
            .nav { position: fixed; top: 68px; left: 0; width: 100%; background: #fff; flex-direction: column; padding: var(--spacing-lg); gap: var(--spacing-md); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); transform: translateY(-110%); opacity: 0; pointer-events: none; transition: var(--transition); }
            .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links { flex-direction: column; width: 100%; gap: var(--spacing-md); }
            .nav-links a { width: 100%; padding: var(--spacing-sm) 0; font-size: 1.05rem; }
            .nav-actions { width: 100%; flex-wrap: wrap; }
            .search-box { flex: 1; min-width: 0; }
            .search-box input { width: 100%; }
            .mobile-toggle { display: block; }
            .btn-cta-nav { width: 100%; text-align: center; }
        }
        @media (max-width: 520px) {
            .header .container { height: 60px; }
            .logo { font-size: 1.25rem; }
            .logo .logo-icon { width: 34px; height: 34px; font-size: 1rem; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            margin-top: 68px;
            background: linear-gradient(135deg, #0F0F1A 0%, #1A1A2E 40%, #2C1F1A 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            mix-blend-mode: overlay;
            animation: heroScale 20s ease-in-out infinite alternate;
        }
        @keyframes heroScale {
            0% { transform: scale(1); }
            100% { transform: scale(1.08); }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212,168,67,0.10) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(192,57,43,0.06) 0%, transparent 50%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            padding-top: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
        }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212,168,67,0.15);
            border: 1px solid rgba(212,168,67,0.25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-primary-light);
            margin-bottom: var(--spacing-lg);
            letter-spacing: 0.02em;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-title {
            color: #fff;
            line-height: 1.1;
            margin-bottom: var(--spacing-md);
        }
        .hero-title .highlight { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-subtitle {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: rgba(255,255,255,0.7);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: var(--spacing-xl);
        }
        .hero-cta { display: flex; flex-wrap: wrap; gap: var(--spacing-md); }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(212,168,67,0.35);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(212,168,67,0.5); color: #fff; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.15);
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 1rem;
            transition: var(--transition);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.16); border-color: rgba(255,255,255,0.3); transform: translateY(-3px); color: #fff; }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xl);
            margin-top: var(--spacing-2xl);
            padding-top: var(--spacing-xl);
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat { text-align: left; }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary-light);
            line-height: 1.1;
        }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
        @media (max-width: 768px) {
            .hero { min-height: 70vh; margin-top: 68px; }
            .hero-content { max-width: 100%; }
            .hero-stats { gap: var(--spacing-lg); }
            .hero-stat .num { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .hero { min-height: 60vh; margin-top: 60px; }
            .hero-cta { flex-direction: column; }
            .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
            .hero-stats { flex-direction: column; gap: var(--spacing-md); }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark {
            background: var(--color-dark);
            color: rgba(255,255,255,0.8);
        }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-dark p { color: rgba(255,255,255,0.6); }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto var(--spacing-xl) auto;
        }
        .section-header h2 { margin-bottom: var(--spacing-sm); }
        .section-header p { font-size: 1.1rem; }
        .section-tag {
            display: inline-block;
            background: rgba(212,168,67,0.12);
            color: var(--color-primary-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: var(--spacing-sm);
            border: 1px solid rgba(212,168,67,0.2);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }
        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary); }
        .stat-card .icon {
            width: 56px;
            height: 56px;
            margin: 0 auto var(--spacing-md);
            background: linear-gradient(135deg, rgba(212,168,67,0.12), rgba(212,168,67,0.04));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--color-primary);
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-dark);
            line-height: 1.1;
        }
        .stat-card .num .suffix { font-size: 1rem; font-weight: 600; color: var(--color-primary); }
        .stat-card .label { font-size: 0.9rem; color: var(--color-text-weak); margin-top: var(--spacing-sm); }
        @media (max-width: 900px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr; }
            .stat-card { padding: var(--spacing-lg); }
            .stat-card .num { font-size: 2rem; }
        }

        /* ===== 品牌介绍 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.02); }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(212,168,67,0.1), transparent);
            pointer-events: none;
        }
        .intro-content h2 { margin-bottom: var(--spacing-md); }
        .intro-content p { margin-bottom: var(--spacing-md); font-size: 1.05rem; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-md); margin-top: var(--spacing-lg); }
        .intro-feature { display: flex; align-items: flex-start; gap: var(--spacing-sm); }
        .intro-feature i { color: var(--color-primary); font-size: 1.1rem; margin-top: 2px; flex-shrink: 0; }
        .intro-feature span { font-size: 0.95rem; font-weight: 500; color: var(--color-dark); }
        @media (max-width: 900px) {
            .intro-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
            .intro-image img { height: 280px; }
            .intro-features { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .intro-image img { height: 200px; }
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-lg);
        }
        .category-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            position: relative;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--color-primary); }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .card-img img { transform: scale(1.06); }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26,26,46,0.7) 0%, transparent 60%);
        }
        .category-card .card-body {
            padding: var(--spacing-lg);
        }
        .category-card .card-body h3 { margin-bottom: var(--spacing-sm); font-size: 1.2rem; }
        .category-card .card-body p { font-size: 0.95rem; margin-bottom: var(--spacing-md); }
        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-primary-dark);
        }
        .category-card .card-tag i { transition: var(--transition); }
        .category-card:hover .card-tag i { transform: translateX(4px); }
        .category-card .card-img .cat-label {
            position: absolute;
            top: var(--spacing-md);
            left: var(--spacing-md);
            background: rgba(212,168,67,0.9);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
            z-index: 2;
        }
        @media (max-width: 520px) {
            .category-grid { grid-template-columns: 1fr; }
            .category-card .card-img { height: 160px; }
        }

        /* ===== 最新资讯列表 ===== */
        .post-list { display: flex; flex-direction: column; gap: var(--spacing-md); }
        .post-item {
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: var(--spacing-lg);
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            align-items: start;
        }
        .post-item:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary); transform: translateX(4px); }
        .post-item .post-thumb {
            border-radius: var(--radius-sm);
            overflow: hidden;
            height: 140px;
        }
        .post-item .post-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .post-item:hover .post-thumb img { transform: scale(1.04); }
        .post-item .post-info { display: flex; flex-direction: column; gap: var(--spacing-sm); padding: var(--spacing-xs) 0; }
        .post-item .post-meta { display: flex; flex-wrap: wrap; gap: var(--spacing-md); font-size: 0.85rem; color: var(--color-text-weak); }
        .post-item .post-meta .cat { color: var(--color-primary-dark); font-weight: 500; }
        .post-item .post-title { font-size: 1.1rem; font-weight: 600; color: var(--color-dark); line-height: 1.4; }
        .post-item .post-title a { color: inherit; }
        .post-item .post-title a:hover { color: var(--color-primary-dark); }
        .post-item .post-excerpt { font-size: 0.95rem; color: var(--color-text-weak); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-item .post-read { font-size: 0.85rem; font-weight: 500; color: var(--color-primary-dark); display: inline-flex; align-items: center; gap: 4px; }
        .post-empty {
            text-align: center;
            padding: var(--spacing-xl);
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
            color: var(--color-text-weak);
            font-size: 1rem;
        }
        @media (max-width: 768px) {
            .post-item { grid-template-columns: 1fr; gap: var(--spacing-md); }
            .post-item .post-thumb { height: 200px; }
        }
        @media (max-width: 520px) {
            .post-item .post-thumb { height: 160px; }
            .post-item .post-title { font-size: 1rem; }
        }

        /* ===== 服务流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            counter-reset: step;
        }
        .process-step {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto var(--spacing-md);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .process-step h4 { margin-bottom: var(--spacing-sm); font-size: 1.05rem; }
        .process-step p { font-size: 0.9rem; margin-bottom: 0; }
        .process-step::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -1.2rem;
            width: 2.4rem;
            height: 2px;
            background: linear-gradient(to right, var(--color-primary), transparent);
            transform: translateY(-50%);
        }
        .process-step:last-child::after { display: none; }
        @media (max-width: 900px) {
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .process-step::after { display: none; }
        }
        @media (max-width: 520px) {
            .process-grid { grid-template-columns: 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--spacing-sm); }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--color-primary); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-dark);
            cursor: pointer;
            gap: var(--spacing-md);
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--color-primary-dark); }
        .faq-question i { font-size: 0.85rem; color: var(--color-primary); transition: var(--transition); flex-shrink: 0; }
        .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;
        }
        .faq-answer-inner {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer { max-height: 400px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-dark), var(--color-dark-mid));
            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; text-align: center; padding: var(--spacing-2xl) var(--spacing-lg); }
        .cta-section h2 { color: #fff; margin-bottom: var(--spacing-sm); }
        .cta-section p { color: rgba(255,255,255,0.6); font-size: 1.1rem; max-width: 580px; margin: 0 auto var(--spacing-xl); }
        .cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--spacing-md); }
        .cta-actions .btn-primary { box-shadow: 0 8px 28px rgba(212,168,67,0.35); }
        .cta-actions .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255,255,255,0.2);
            color: #fff;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .cta-actions .btn-outline-light:hover { border-color: var(--color-primary); background: rgba(212,168,67,0.1); color: var(--color-primary-light); transform: translateY(-3px); }
        @media (max-width: 520px) {
            .cta-actions { flex-direction: column; align-items: center; }
            .cta-actions .btn-primary, .cta-actions .btn-outline-light { width: 100%; justify-content: center; }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-dark);
            color: rgba(255,255,255,0.6);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding: var(--spacing-2xl) 0;
        }
        .footer-brand .logo { color: #fff; margin-bottom: var(--spacing-md); }
        .footer-brand .logo span { background: linear-gradient(135deg, #fff, var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .footer-brand .logo .logo-icon { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); }
        .footer-brand p { font-size: 0.9rem; max-width: 360px; }
        .footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: var(--spacing-md); text-transform: uppercase; letter-spacing: 0.04em; }
        .footer-links { display: flex; flex-direction: column; gap: var(--spacing-sm); }
        .footer-links a { font-size: 0.9rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
        .footer-links a:hover { color: var(--color-primary-light); padding-left: 4px; }
        .footer-contact p { font-size: 0.9rem; margin-bottom: var(--spacing-sm); display: flex; align-items: center; gap: 8px; }
        .footer-contact i { width: 18px; color: var(--color-primary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: var(--spacing-lg) 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-md);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--color-primary-light); }
        @media (max-width: 900px) {
            .footer-main { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-main { grid-template-columns: 1fr; gap: var(--spacing-lg); }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 回到顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
        }
        .back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); color: #fff; }
        @media (max-width: 520px) {
            .back-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: 1rem; }
        }

        /* ===== 通用工具 ===== */
        .text-center { text-align: center; }
        .mt-lg { margin-top: var(--spacing-lg); }
        .mb-lg { margin-bottom: var(--spacing-lg); }
        .gap-md { gap: var(--spacing-md); }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--color-bg); }
        ::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

        /* ===== 选择文本 ===== */
        ::selection { background: rgba(212,168,67,0.25); color: var(--color-dark); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #F59E0B;
            --primary-dark: #D97706;
            --primary-light: #FCD34D;
            --secondary: #1E293B;
            --secondary-light: #334155;
            --bg: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #0F172A;
            --bg-dark-alt: #1E293B;
            --text: #1E293B;
            --text-light: #64748B;
            --text-white: #F8FAFC;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 12px 40px rgba(245, 158, 11, 0.15);
            --transition: 0.30s cubic-bezier(0.22, 1, 0.36, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-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);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.8rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 3.6vw, 2.6rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.2rem, 2.4vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            color: #fff;
            font-size: 1.1rem;
        }
        .logo span {
            color: var(--text);
        }
        .logo:hover {
            color: var(--text);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: flex-end;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            position: relative;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: var(--radius-xs);
            transition: background var(--transition), color var(--transition);
        }
        .nav-links a:hover {
            color: var(--text);
            background: var(--border-light);
        }
        .nav-links a.active {
            color: var(--primary-dark);
            background: rgba(245, 158, 11, 0.10);
            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: 4px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: 40px;
            padding: 4px 4px 4px 16px;
            border: 1px solid transparent;
            transition: border var(--transition), background var(--transition);
            min-width: 180px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }
        .search-box button {
            padding: 6px 8px;
            color: var(--text-light);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
        }
        .search-box input {
            flex: 1;
            padding: 6px 8px;
            font-size: 0.9rem;
            color: var(--text);
            background: transparent;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .btn-cta-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 40px;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.30);
            white-space: nowrap;
        }
        .btn-cta-nav:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.40);
            color: #fff;
        }
        .btn-cta-nav i {
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: transform var(--transition), opacity var(--transition);
        }

        /* Mobile Nav */
        @media (max-width: 868px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
                border-radius: 0 0 var(--radius) var(--radius);
                align-items: stretch;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links {
                flex-direction: column;
                gap: 4px;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 1.05rem;
                border-radius: var(--radius-xs);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(245, 158, 11, 0.12);
            }
            .nav-actions {
                flex-direction: column;
                gap: 12px;
                width: 100%;
            }
            .search-box {
                width: 100%;
                min-width: unset;
            }
            .btn-cta-nav {
                justify-content: center;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 480px) {
            .header .container {
                gap: 8px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .btn-cta-nav {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .search-box {
                min-width: 120px;
            }
        }

        /* ===== Hero Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            isolation: isolate;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 20%, rgba(15, 23, 42, 0.40) 80%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: var(--text-white);
            font-weight: 800;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }
        .page-hero h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .page-hero .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 40px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.92);
            font-weight: 500;
        }
        .page-hero .hero-badges span i {
            color: var(--primary-light);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 72px 0 56px;
                min-height: 280px;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-badges span {
                font-size: 0.78rem;
                padding: 4px 12px;
            }
        }

        /* ===== Section Titles ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.05rem;
            color: var(--text-light);
        }
        .section-title .title-accent {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            border-radius: 4px;
            margin-bottom: 16px;
        }

        /* ===== Guide Intro ===== */
        .guide-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .guide-intro .intro-text h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
        }
        .guide-intro .intro-text p {
            font-size: 1.02rem;
            margin-bottom: 16px;
        }
        .guide-intro .intro-text ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 20px;
        }
        .guide-intro .intro-text ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.98rem;
            color: var(--text);
        }
        .guide-intro .intro-text ul li i {
            color: var(--primary);
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
        }
        .guide-intro .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--border-light);
            aspect-ratio: 4/3;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .guide-intro .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
        }
        @media (max-width: 868px) {
            .guide-intro {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .guide-intro .intro-image {
                order: -1;
                max-height: 280px;
            }
        }

        /* ===== Category Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .card-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-item .card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--border-light);
            position: relative;
        }
        .card-item .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card-item:hover .card-img img {
            transform: scale(1.05);
        }
        .card-item .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            background: rgba(245, 158, 11, 0.90);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 40px;
            letter-spacing: 0.3px;
        }
        .card-item .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-item .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text);
        }
        .card-item .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 12px;
            flex: 1;
        }
        .card-item .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            margin-top: auto;
        }
        .card-item .card-body .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }
        .card-item .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-dark);
            transition: gap var(--transition);
            margin-top: 8px;
        }
        .card-item .card-body .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }
        @media (max-width: 600px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Stats Dark Block ===== */
        .stats-block {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0;
            position: relative;
            isolation: isolate;
        }
        .stats-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.70));
            z-index: 1;
        }
        .stats-block .container {
            position: relative;
            z-index: 2;
        }
        .stats-block .section-title h2 {
            color: var(--text-white);
        }
        .stats-block .section-title p {
            color: rgba(255, 255, 255, 0.70);
        }
        .stats-block .section-title .title-accent {
            background: linear-gradient(90deg, var(--primary-light), var(--primary));
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stats-grid .stat-item {
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            transition: transform var(--transition), background var(--transition);
        }
        .stats-grid .stat-item:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.10);
        }
        .stats-grid .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stats-grid .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }
        @media (max-width: 600px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-grid .stat-item .stat-number {
                font-size: 2.2rem;
            }
        }

        /* ===== List / Articles ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .article-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .article-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .article-item .article-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(245, 158, 11, 0.10);
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary-dark);
        }
        .article-item .article-content {
            flex: 1;
            min-width: 0;
        }
        .article-item .article-content h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
            color: var(--text);
        }
        .article-item .article-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .article-item .article-content .article-meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 6px;
        }
        .article-item .article-content .article-meta i {
            color: var(--primary);
            margin-right: 4px;
        }
        .article-item .article-link {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--border-light);
            color: var(--text-light);
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .article-item:hover .article-link {
            background: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }
        @media (max-width: 600px) {
            .article-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }
            .article-item .article-num {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .article-item .article-link {
                align-self: flex-end;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            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-sm);
            overflow: hidden;
            transition: border var(--transition), box-shadow var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text);
            background: none;
            text-align: left;
            transition: background var(--transition);
            border: none;
        }
        .faq-item .faq-question:hover {
            background: var(--border-light);
        }
        .faq-item .faq-question i {
            font-size: 0.9rem;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1), padding 0.3s ease;
            padding: 0 22px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 280px;
            padding: 0 22px 20px;
        }
        @media (max-width: 600px) {
            .faq-item .faq-question {
                font-size: 0.95rem;
                padding: 14px 16px;
            }
            .faq-item .faq-answer {
                font-size: 0.88rem;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--bg-dark), var(--secondary-light));
            padding: 72px 0;
            text-align: center;
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-block .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .cta-block .btn-cta-large:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.50);
            color: #fff;
        }
        .cta-block .btn-cta-large i {
            font-size: 1rem;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 56px 0 0;
            border-top: 2px solid rgba(255, 255, 255, 0.04);
        }
        .footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand .logo span {
            color: var(--text-white);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-contact p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact p i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 20px 0 28px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom span:last-child {
            text-align: right;
        }
        @media (max-width: 868px) {
            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 600px) {
            .footer-main {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom span:last-child {
                text-align: center;
            }
            .footer {
                padding: 40px 0 0;
            }
            .footer .container {
                padding: 0 16px;
            }
        }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 1024px) {
            .nav-links a {
                padding: 6px 14px;
                font-size: 0.9rem;
            }
            .search-box {
                min-width: 140px;
            }
        }
        @media (max-width: 480px) {
            .section-title {
                margin-bottom: 32px;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 0.92rem;
            }
            .stats-block {
                padding: 48px 0;
            }
            .cta-block {
                padding: 48px 0;
            }
            .cta-block .btn-cta-large {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
:root {
    --primary: #c0392b;
    --primary-dark: #a93226;
    --primary-light: #e74c3c;
    --secondary: #f39c12;
    --secondary-light: #f1c40f;
    --bg: #f8f5f2;
    --bg-alt: #ffffff;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --border: #e8e0d8;
    --shadow: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    --max-width: 1200px;
    --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: var(--font); border: none; background: none; }
input { font-family: var(--font); outline: none; }

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

header {
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
    height: var(--header-h);
}
.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--text); }
.logo .logo-icon { color: var(--secondary); font-size: 26px; }
.logo:hover { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 32px; }
.nav-links { display: flex; gap: 8px; }
.nav-links a {
    padding: 8px 16px;
    border-radius: var(--radius-xs);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
    position: relative;
}
.nav-links a:hover { color: var(--primary); background: rgba(192,57,43,0.06); }
.nav-links a.active { color: var(--primary); background: rgba(192,57,43,0.1); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg);
    border-radius: 40px;
    padding: 4px 4px 4px 16px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(192,57,43,0.12); }
.search-box input { border: none; background: transparent; padding: 8px 0; font-size: 14px; width: 160px; color: var(--text); }
.search-box input::placeholder { color: var(--text-light); }
.search-box button { padding: 8px 14px; color: var(--text-light); font-size: 16px; border-radius: 40px; transition: var(--transition); }
.search-box button:hover { color: var(--primary); }
.btn-cta-nav {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff !important;
    padding: 10px 22px;
    border-radius: 40px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}
.btn-cta-nav:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(192,57,43,0.3); }
.mobile-toggle { display: none; font-size: 24px; color: var(--text); padding: 8px; }
@media (max-width: 768px) {
    .nav-links, .nav-actions .search-box { display: none; }
    .mobile-toggle { display: block; }
    .nav.open .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: #fff;
        padding: 16px 24px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        gap: 4px;
        border-top: 1px solid var(--border);
    }
    .nav.open .nav-links a { padding: 12px 16px; font-size: 16px; }
    .nav.open + .nav-actions .search-box { display: flex; margin-top: 12px; }
    .nav-actions .btn-cta-nav { font-size: 13px; padding: 8px 16px; }
    .search-box input { width: 100px; }
}

.article-banner {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    min-height: 280px;
    display: flex;
    align-items: center;
}
.article-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.15;
}
.article-banner .container { position: relative; z-index: 2; }
.article-banner .breadcrumb { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.article-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
.article-banner .breadcrumb a:hover { color: #fff; }
.article-banner .breadcrumb span { color: rgba(255,255,255,0.4); margin: 0 8px; }
.article-banner h1 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    max-width: 800px;
    line-height: 1.3;
    margin-bottom: 16px;
}
.article-banner .meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}
.article-banner .meta i { margin-right: 6px; }
.article-banner .meta .category-tag {
    background: rgba(243,156,18,0.2);
    color: var(--secondary);
    padding: 4px 14px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 500;
}
@media (max-width: 768px) {
    .article-banner { padding: 40px 0; min-height: 200px; }
    .article-banner h1 { font-size: 26px; }
    .article-banner .meta { gap: 12px; font-size: 13px; }
}

.article-main {
    padding: 50px 0 70px;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
}
.article-content {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.article-content .featured-image {
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 32px;
}
.article-content .featured-image img { width: 100%; height: auto; object-fit: cover; }
.article-body { font-size: 16px; line-height: 1.8; color: var(--text); }
.article-body p { margin-bottom: 1.2em; }
.article-body h2 { font-size: 24px; font-weight: 700; margin: 1.6em 0 0.6em; color: var(--text); }
.article-body h3 { font-size: 20px; font-weight: 600; margin: 1.4em 0 0.5em; color: var(--text); }
.article-body ul, .article-body ol { margin: 1em 0; padding-left: 24px; }
.article-body li { margin-bottom: 0.5em; }
.article-body a { color: var(--primary); text-decoration: underline; }
.article-body a:hover { color: var(--primary-dark); }
.article-body blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(192,57,43,0.04);
    padding: 16px 24px;
    margin: 1.5em 0;
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    color: var(--text-light);
    font-style: italic;
}
.article-body img { border-radius: var(--radius-sm); margin: 1.5em 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-body th { background: var(--bg); font-weight: 600; }
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.article-tags .tag {
    background: var(--bg);
    color: var(--text-light);
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; }
.article-share {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.article-share span { font-size: 14px; color: var(--text-light); font-weight: 500; }
.article-share a {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--bg);
    color: var(--text-light);
    font-size: 16px;
    transition: var(--transition);
}
.article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.sidebar-card {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow);
}
.sidebar-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-card h3 i { color: var(--secondary); }
.sidebar-list { display: flex; flex-direction: column; gap: 14px; }
.sidebar-list-item { display: flex; gap: 14px; align-items: flex-start; }
.sidebar-list-item img {
    width: 70px; height: 56px;
    object-fit: cover;
    border-radius: var(--radius-xs);
    flex-shrink: 0;
}
.sidebar-list-item .info { flex: 1; }
.sidebar-list-item .info a {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}
.sidebar-list-item .info a:hover { color: var(--primary); }
.sidebar-list-item .info .date { font-size: 12px; color: var(--text-light); margin-top: 4px; }
.sidebar-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
}
.sidebar-cta h3 { color: #fff; font-size: 20px; margin-bottom: 10px; }
.sidebar-cta p { font-size: 14px; opacity: 0.85; margin-bottom: 20px; }
.sidebar-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--primary) !important;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}
.sidebar-cta .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; gap: 32px; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 640px) {
    .article-content { padding: 24px 20px; }
    .article-sidebar { grid-template-columns: 1fr; }
    .article-banner h1 { font-size: 22px; }
}

.article-nav {
    margin-top: 40px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.article-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    max-width: 45%;
}
.article-nav a:hover { color: var(--primary); }
.article-nav .next { text-align: right; justify-content: flex-end; }

.footer {
    background: #1a1a2e;
    color: rgba(255,255,255,0.8);
    padding: 60px 0 30px;
    margin-top: 0;
}
.footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.footer a { color: rgba(255,255,255,0.65); }
.footer a:hover { color: #fff; }
.footer-main { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo .logo-icon { color: var(--secondary); }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; }
.footer-contact p { font-size: 14px; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.footer-contact i { width: 18px; color: var(--secondary); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}
@media (max-width: 768px) {
    .footer-main { grid-template-columns: 1fr 1fr; gap: 30px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .footer-main { grid-template-columns: 1fr; }
}

.not-found {
    text-align: center;
    padding: 80px 24px;
}
.not-found i { font-size: 64px; color: var(--text-light); margin-bottom: 24px; opacity: 0.3; }
.not-found h2 { font-size: 28px; margin-bottom: 12px; }
.not-found p { color: var(--text-light); margin-bottom: 24px; }
.not-found .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}
.not-found .btn:hover { background: var(--primary-dark); transform: translateY(-2px); }