/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --primary-dark: #0f2440;
            --accent: #d94a4a;
            --accent-light: #e86a6a;
            --bg: #ffffff;
            --bg-alt: #f6f8fc;
            --bg-dark: #0f1a2e;
            --text: #1a1f2e;
            --text-light: #5a6478;
            --text-white: #f0f4fa;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.14);
            --transition: 0.25s ease;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a { text-decoration: none; color: inherit; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-lg { max-width: 1360px; margin: 0 auto; padding: 0 24px; }
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 48px 0; }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            line-height: 1.7;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--primary);
            color: #fff;
        }
        .badge-accent { background: var(--accent); color: #fff; }
        .badge-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30,58,95,0.25);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30,58,95,0.30);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(217,74,74,0.25);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(217,74,74,0.30);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .card {
            background: var(--bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .card-img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; line-height: 1.3; }
        .card-text { font-size: 0.95rem; color: var(--text-light); line-height: 1.7; }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--bg-alt);
            color: var(--primary);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .stat-number { font-size: 2.6rem; font-weight: 800; color: var(--primary); line-height: 1.1; letter-spacing: -0.02em; }
        .stat-label { font-size: 0.95rem; color: var(--text-light); }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
            cursor: pointer;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            gap: 16px;
        }
        .faq-answer {
            padding-top: 14px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }
        .faq-item.active .faq-icon { transform: rotate(180deg); }
        .faq-icon { transition: transform var(--transition); font-size: 1.2rem; color: var(--primary); }
        .divider { height: 1px; background: var(--border); margin: 60px 0; }
        .text-gradient { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            min-height: 80vh;
            align-items: center;
            gap: 40px;
        }
        .hero-content { padding: 60px 0; }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 460px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.10), rgba(15,26,46,0.30));
            pointer-events: none;
        }
        .hero-visual-inner {
            position: relative;
            z-index: 2;
            padding: 40px;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }
        @media (max-width: 1024px) {
            .hero-split { grid-template-columns: 1fr; min-height: auto; gap: 32px; }
            .hero-content { padding: 40px 0 0; }
            .hero-visual { min-height: 320px; order: -1; }
            .section-title { font-size: 1.8rem; }
            .section-pad { padding: 56px 0; }
            .stat-number { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .hero-visual { min-height: 240px; }
            .section-title { font-size: 1.5rem; }
            .section-pad { padding: 40px 0; }
            .btn { padding: 12px 24px; font-size: 0.9rem; }
            .card-body { padding: 18px; }
            .stat-number { font-size: 1.7rem; }
            .hero-content { padding: 24px 0 0; }
        }
        @media (max-width: 520px) {
            .hero-visual { min-height: 180px; }
            .section-title { font-size: 1.3rem; }
            .badge { font-size: 0.7rem; padding: 4px 10px; }
            .card-title { font-size: 1rem; }
        }
        .nav-blur {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.85);
            border-bottom: 1px solid rgba(226,232,240,0.6);
        }
        .nav-link { font-weight: 500; padding: 8px 4px; position: relative; color: var(--text-light); transition: color var(--transition); }
        .nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); transition: width var(--transition); border-radius: 2px; }
        .nav-link:hover { color: var(--primary); }
        .nav-link:hover::after { width: 100%; }
        .nav-link.active { color: var(--primary); font-weight: 600; }
        .nav-link.active::after { width: 100%; }
        .footer { background: var(--bg-dark); color: var(--text-white); padding: 60px 0 30px; }
        .footer a { color: rgba(240,250,255,0.65); transition: color var(--transition); }
        .footer a:hover { color: #fff; }
        .footer-title { font-weight: 700; font-size: 1.1rem; margin-bottom: 16px; color: #fff; }
        .footer-link { display: block; padding: 4px 0; font-size: 0.9rem; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; margin-top: 40px; text-align: center; font-size: 0.85rem; color: rgba(240,250,255,0.5); }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-3 { grid-template-columns: 1fr; gap: 20px; }
            .grid-2 { grid-template-columns: 1fr; gap: 20px; }
            .grid-4 { grid-template-columns: 1fr 1fr; gap: 16px; }
        }
        @media (max-width: 520px) {
            .grid-4 { grid-template-columns: 1fr; }
        }
        .cms-list-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .cms-list-item:last-child { border-bottom: none; }
        .cms-list-item:hover { padding-left: 8px; }
        .cms-title { font-weight: 600; font-size: 1.05rem; margin-bottom: 4px; }
        .cms-title a { color: var(--text); }
        .cms-title a:hover { color: var(--primary); }
        .cms-meta { font-size: 0.82rem; color: var(--text-light); display: flex; gap: 16px; flex-wrap: wrap; }
        .cms-meta span { display: inline-flex; align-items: center; gap: 4px; }
        .cms-excerpt { font-size: 0.93rem; color: var(--text-light); margin-top: 6px; line-height: 1.7; }
        .empty-state { text-align: center; padding: 48px 20px; color: var(--text-light); }
        .empty-state i { font-size: 2.4rem; margin-bottom: 16px; color: var(--border); }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            transition: all var(--transition);
            background-size: cover;
            background-position: center;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
        .category-card-overlay {
            background: linear-gradient(transparent 30%, rgba(15,26,46,0.75));
            padding: 32px 24px;
            width: 100%;
            color: #fff;
        }
        .category-card-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
        .category-card-desc { font-size: 0.9rem; opacity: 0.85; }
        .mobile-nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; padding: 4px; }
        @media (max-width: 768px) {
            .mobile-nav-toggle { display: block; }
            .nav-menu { display: none; flex-direction: column; align-items: flex-start; width: 100%; padding: 16px 0 8px; gap: 12px; }
            .nav-menu.open { display: flex; }
            .nav-link { padding: 8px 0; font-size: 1rem; }
        }
        .floating-shape { position: absolute; border-radius: 50%; background: rgba(30,58,95,0.04); pointer-events: none; }
        .icon-circle { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--bg-alt); color: var(--primary); font-size: 1.4rem; transition: all var(--transition); }
        .card:hover .icon-circle { background: var(--primary); color: #fff; }
        .scroll-fade { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .scroll-fade.visible { opacity: 1; transform: translateY(0); }
        .pill-input { border: 1.5px solid var(--border); border-radius: 50px; padding: 12px 20px; font-size: 0.95rem; outline: none; transition: border-color var(--transition); width: 100%; background: var(--bg); }
        .pill-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30,58,95,0.08); }
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
        }
        .cta-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
        .cta-section p { opacity: 0.85; max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
        @media (max-width: 768px) {
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.5rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --secondary: #0f172a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-light: #f8fafc;
            --bg-dark: #0b1120;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 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-light);
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; letter-spacing: -0.01em; }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid rgba(226,232,240,0.5);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(255,255,255,0.96); box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
        }
        .logo i { color: var(--primary); font-size: 1.4rem; }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: var(--radius-xs);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover { color: var(--primary); background: rgba(26,86,219,0.06); }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(26,86,219,0.08);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 10px 24px;
            border-radius: var(--radius-xs);
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,86,219,0.25);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,86,219,0.2);
        }
        .btn-accent {
            background: var(--accent);
            color: #0f172a;
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.3);
        }
        .btn-sm { padding: 6px 16px; font-size: 0.85rem; }
        .btn-lg { padding: 14px 36px; font-size: 1.05rem; border-radius: var(--radius-sm); }

        /* ===== Mobile Menu ===== */
        .menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
        }
        .menu-toggle:hover { background: rgba(0,0,0,0.04); }
        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px;
                gap: 12px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
            }
            .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-link { font-size: 1.1rem; padding: 10px 16px; width: 100%; }
            .nav-link.active::after { display: none; }
            .nav-menu .btn { width: 100%; justify-content: center; margin-top: 8px; }
        }

        /* ===== Hero / Banner ===== */
        .banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            margin-top: 72px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,17,32,0.88) 0%, rgba(11,17,32,0.60) 60%, rgba(11,17,32,0.30) 100%);
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            padding: 80px 0 80px;
            max-width: 800px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 4px 16px;
            border-radius: 30px;
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .banner h1 {
            font-size: 3.2rem;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .banner h1 span { color: var(--accent); }
        .banner p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .banner-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        @media (max-width: 768px) {
            .banner { min-height: 340px; }
            .banner-content { padding: 60px 0 60px; }
            .banner h1 { font-size: 2rem; }
            .banner p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .banner h1 { font-size: 1.6rem; }
            .banner-actions { flex-direction: column; }
            .banner-actions .btn { width: 100%; }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
            padding: 20px 0 4px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: var(--border-color); font-size: 0.7rem; }

        /* ===== Section ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark { background: var(--bg-dark); color: #fff; }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-dark .section-title { color: #fff; }
        .section-dark .section-sub { color: rgba(255,255,255,0.65); }
        .section-head { margin-bottom: 48px; }
        .section-head.centered { text-align: center; }
        .section-head.centered .section-sub { margin: 0 auto; }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .section-head { margin-bottom: 32px; }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }
        .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
        .card-text { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }
        .card-meta { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--text-light); margin-top: 12px; }
        .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            background: rgba(26,86,219,0.08);
            color: var(--primary);
        }
        .card-tag.green { background: rgba(16,185,129,0.1); color: #059669; }
        .card-tag.amber { background: rgba(245,158,11,0.1); color: #d97706; }
        .card-tag.purple { background: rgba(139,92,246,0.1); color: #7c3aed; }

        /* ===== 网格 ===== */
        .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; }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== 评分卡 ===== */
        .score-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }
        .score-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .score-number {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 4px;
        }
        .score-label { font-size: 0.9rem; color: var(--text-secondary); font-weight: 500; }
        .score-stars { color: var(--accent); font-size: 1.2rem; margin: 8px 0; }

        /* ===== 统计块 ===== */
        .stat-item { text-align: center; padding: 20px; }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.1; }
        .stat-label { font-size: 0.95rem; color: var(--text-secondary); margin-top: 6px; }
        .section-dark .stat-number { color: var(--accent); }
        .section-dark .stat-label { color: rgba(255,255,255,0.6); }

        /* ===== 评测对比表 ===== */
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            background: var(--bg-card);
        }
        .compare-table th {
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            padding: 14px 20px;
            text-align: left;
            font-size: 0.95rem;
        }
        .compare-table td {
            padding: 12px 20px;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.92rem;
            color: var(--text-secondary);
        }
        .compare-table tr:last-child td { border-bottom: none; }
        .compare-table tr:hover td { background: rgba(26,86,219,0.02); }
        .compare-table .highlight { color: var(--primary); font-weight: 600; }
        @media (max-width: 768px) {
            .compare-table { font-size: 0.85rem; }
            .compare-table th, .compare-table td { padding: 10px 12px; }
        }

        /* ===== 评测列表 ===== */
        .review-list { display: flex; flex-direction: column; gap: 20px; }
        .review-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .review-item:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
        .review-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            background: rgba(26,86,219,0.08);
            color: var(--primary);
        }
        .review-content { flex: 1; }
        .review-content h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
        .review-content p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }
        .review-score {
            flex-shrink: 0;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            min-width: 48px;
            text-align: right;
        }
        @media (max-width: 600px) {
            .review-item { flex-direction: column; }
            .review-score { text-align: left; }
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
        }
        .faq-item:last-child { border-bottom: none; }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            padding: 4px 0;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: transform 0.3s; font-size: 0.85rem; color: var(--text-light); }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-answer.open { max-height: 300px; padding-top: 12px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius);
            padding: 60px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section h2 { font-size: 2rem; margin-bottom: 12px; position: relative; }
        .cta-section p { font-size: 1.05rem; opacity: 0.85; margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; position: relative; }
        .cta-section .btn { position: relative; }
        @media (max-width: 768px) {
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.5rem; }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            padding: 60px 0 32px;
            color: rgba(255,255,255,0.7);
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-link {
            display: block;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-link:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 768px) {
            .footer { padding: 40px 0 24px; }
            .footer .grid-4 { gap: 32px; }
        }

        /* ===== Utility ===== */
        .gap-2 { gap: 8px; }
        .gap-4 { gap: 16px; }
        .gap-6 { gap: 24px; }
        .gap-8 { gap: 32px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 8px; }
        .mt-4 { margin-top: 16px; }
        .mt-6 { margin-top: 24px; }
        .mt-8 { margin-top: 32px; }
        .mb-2 { margin-bottom: 8px; }
        .mb-4 { margin-bottom: 16px; }
        .mb-6 { margin-bottom: 24px; }
        .mb-8 { margin-bottom: 32px; }
        .text-sm { font-size: 0.9rem; }
        .text-xs { font-size: 0.8rem; }
        .text-lg { font-size: 1.1rem; }
        .text-xl { font-size: 1.25rem; }
        .font-bold { font-weight: 700; }
        .font-semibold { font-weight: 600; }
        .text-primary { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .text-muted { color: var(--text-secondary); }
        .rounded-full { border-radius: 9999px; }
        .border { border: 1px solid var(--border-color); }
        .shadow-sm { box-shadow: var(--shadow-sm); }
        .w-full { width: 100%; }
        .truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

        @media (max-width: 520px) {
            .banner h1 { font-size: 1.4rem; }
            .section-title { font-size: 1.4rem; }
            .stat-number { font-size: 2rem; }
            .score-number { font-size: 2.4rem; }
            .review-score { font-size: 1.3rem; }
        }

        /* 滚动条美化 */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-light); }
        ::-webkit-scrollbar-thumb { background: var(--text-light); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

        /* 选中样式 */
        ::selection { background: rgba(26,86,219,0.15); color: var(--primary-dark); }

        /* focus 可访问性 */
        a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        /* 图片占位渐变（备用） */
        .img-placeholder {
            background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 0.9rem;
        }

/* roulang page: article */
:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --accent: #c9a84c;
  --accent-hover: #b8953a;
  --accent-light: rgba(201,168,76,0.12);
  --bg-light: #f8fafc;
  --bg-card: #ffffff;
  --text-dark: #0f172a;
  --text-body: #1e293b;
  --text-muted: #64748b;
  --text-weak: #94a3b8;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06);
  --shadow: 0 4px 20px rgba(15,23,42,0.08);
  --shadow-lg: 0 12px 40px rgba(15,23,42,0.12);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',sans-serif;background:var(--bg-light);color:var(--text-body);line-height:1.7;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;transition:var(--transition);}
button,input,textarea{font-family:inherit;transition:var(--transition);}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:960px;margin:0 auto;padding:0 24px;}
/* header / nav */
.header{background:var(--primary);position:sticky;top:0;z-index:100;border-bottom:1px solid rgba(255,255,255,0.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;}
.logo{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:800;color:#fff;letter-spacing:-0.5px;}
.logo i{color:var(--accent);font-size:1.4rem;}
.logo span{background:linear-gradient(135deg,#fff 60%,var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.nav-menu{display:flex;align-items:center;gap:8px;}
.nav-link{position:relative;padding:6px 16px;font-size:0.9rem;font-weight:500;color:rgba(255,255,255,0.75);border-radius:6px;transition:var(--transition);}
.nav-link:hover{color:#fff;background:rgba(255,255,255,0.08);}
.nav-link.active{color:#fff;background:rgba(201,168,76,0.15);}
.nav-link.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--accent);border-radius:2px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:var(--radius-sm);cursor:pointer;border:none;transition:var(--transition);}
.btn-primary{background:var(--accent);color:var(--primary);padding:10px 24px;font-size:0.9rem;}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,168,76,0.3);}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.25);padding:10px 24px;font-size:0.9rem;}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(201,168,76,0.08);}
.btn-white{background:#fff;color:var(--primary);padding:10px 28px;font-size:0.9rem;}
.btn-white:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,168,76,0.25);}
/* mobile toggle */
.mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:6px;border-radius:6px;}
.mobile-toggle:hover{background:rgba(255,255,255,0.08);}
@media(max-width:768px){
  .mobile-toggle{display:flex;}
  .nav-menu{position:fixed;top:68px;left:0;right:0;background:var(--primary);flex-direction:column;padding:20px 24px;gap:6px;border-bottom:1px solid rgba(255,255,255,0.06);transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);}
  .nav-menu.open{transform:translateY(0);opacity:1;pointer-events:all;}
  .nav-link{width:100%;padding:12px 16px;font-size:1rem;}
  .nav-link.active::after{display:none;}
  .nav-link.active{background:rgba(201,168,76,0.15);border-left:3px solid var(--accent);border-radius:0 6px 6px 0;}
  .nav-menu .btn{width:100%;margin-top:8px;}
}
/* hero article */
.article-hero{position:relative;padding:80px 0 60px;overflow:hidden;}
.article-hero-bg{position:absolute;inset:0;background:var(--primary);z-index:0;}
.article-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:0.3;}
.article-hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,23,42,0.92) 40%,rgba(15,23,42,0.7));z-index:1;}
.article-hero .container,.article-hero .container-narrow{position:relative;z-index:2;}
.article-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:0.85rem;color:rgba(255,255,255,0.5);margin-bottom:20px;}
.article-breadcrumb a{color:rgba(255,255,255,0.65);}
.article-breadcrumb a:hover{color:var(--accent);}
.article-breadcrumb .sep{color:rgba(255,255,255,0.25);}
.article-category-tag{display:inline-block;background:var(--accent);color:var(--primary);font-size:0.75rem;font-weight:700;padding:4px 14px;border-radius:20px;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:16px;}
.article-hero h1{font-size:2.4rem;font-weight:800;color:#fff;line-height:1.25;margin-bottom:16px;letter-spacing:-0.5px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:0.9rem;color:rgba(255,255,255,0.55);}
.article-meta i{margin-right:4px;}
.article-meta span{display:flex;align-items:center;gap:4px;}
/* main content */
.main-content{padding:48px 0 64px;}
.content-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;}
.content-body{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 44px;overflow:hidden;}
.content-body .post-content{font-size:1rem;line-height:1.9;color:var(--text-body);}
.content-body .post-content p{margin-bottom:1.2em;}
.content-body .post-content h2{font-size:1.5rem;font-weight:700;color:var(--text-dark);margin:1.8em 0 0.8em;padding-bottom:8px;border-bottom:2px solid var(--accent-light);}
.content-body .post-content h3{font-size:1.2rem;font-weight:600;color:var(--text-dark);margin:1.5em 0 0.6em;}
.content-body .post-content ul,.content-body .post-content ol{padding-left:1.5em;margin-bottom:1.2em;}
.content-body .post-content li{margin-bottom:0.4em;}
.content-body .post-content a{color:var(--accent-hover);text-decoration:underline;text-underline-offset:2px;}
.content-body .post-content a:hover{color:var(--accent);}
.content-body .post-content blockquote{border-left:4px solid var(--accent);background:var(--accent-light);padding:16px 20px;margin:1.2em 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-dark);font-style:italic;}
.content-body .post-content img{border-radius:var(--radius-sm);margin:1.2em auto;box-shadow:var(--shadow-sm);}
.content-body .post-content code{background:#f1f5f9;padding:2px 8px;border-radius:4px;font-size:0.9em;color:var(--primary);}
.content-body .post-content pre{background:var(--primary);color:#e2e8f0;padding:20px;border-radius:var(--radius-sm);overflow-x:auto;margin:1.2em 0;font-size:0.9rem;line-height:1.6;}
/* sidebar */
.sidebar{display:flex;flex-direction:column;gap:24px;}
.sidebar-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:24px 20px;border:1px solid var(--border);}
.sidebar-card h3{font-size:1rem;font-weight:700;color:var(--text-dark);margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--accent-light);display:flex;align-items:center;gap:8px;}
.sidebar-card h3 i{color:var(--accent);font-size:0.9rem;}
.sidebar-info{display:flex;flex-direction:column;gap:12px;}
.sidebar-info .info-row{display:flex;align-items:center;gap:10px;font-size:0.9rem;color:var(--text-muted);}
.sidebar-info .info-row i{width:18px;color:var(--accent);font-size:0.85rem;}
.sidebar-info .info-row .label{font-weight:600;color:var(--text-dark);min-width:50px;}
.sidebar-tags{display:flex;flex-wrap:wrap;gap:8px;}
.sidebar-tag{background:var(--accent-light);color:var(--accent-hover);font-size:0.8rem;font-weight:500;padding:4px 14px;border-radius:20px;transition:var(--transition);}
.sidebar-tag:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
/* related */
.related-section{padding:56px 0;background:#fff;}
.related-section .section-title{font-size:1.6rem;font-weight:700;color:var(--text-dark);margin-bottom:8px;}
.related-section .section-sub{color:var(--text-muted);font-size:0.95rem;margin-bottom:32px;}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.related-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:var(--transition);}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--accent);}
.related-card-img{position:relative;height:160px;overflow:hidden;background:var(--primary-light);}
.related-card-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition);}
.related-card:hover .related-card-img img{transform:scale(1.06);}
.related-card-body{padding:16px 18px 20px;}
.related-card-body .cat{font-size:0.7rem;font-weight:600;color:var(--accent-hover);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:6px;}
.related-card-body h4{font-size:0.95rem;font-weight:600;color:var(--text-dark);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.8em;}
.related-card-body .date{font-size:0.8rem;color:var(--text-weak);margin-top:8px;display:flex;align-items:center;gap:4px;}
/* cta */
.cta-section{position:relative;padding:64px 0;background:var(--primary);overflow:hidden;}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.08;z-index:0;}
.cta-section .container{position:relative;z-index:1;text-align:center;}
.cta-section h2{font-size:2rem;font-weight:800;color:#fff;margin-bottom:12px;}
.cta-section p{font-size:1.05rem;color:rgba(255,255,255,0.65);max-width:600px;margin:0 auto 28px;}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}
/* footer */
.footer{background:var(--primary);border-top:1px solid rgba(255,255,255,0.06);padding:56px 0 32px;}
.footer .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.footer-title{font-size:1rem;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-link{display:block;font-size:0.9rem;color:rgba(240,250,255,0.55);margin-bottom:10px;transition:var(--transition);}
.footer-link:hover{color:var(--accent);transform:translateX(4px);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding-top:20px;margin-top:32px;text-align:center;font-size:0.85rem;color:rgba(240,250,255,0.4);}
/* not found */
.not-found{text-align:center;padding:60px 20px;}
.not-found i{font-size:3rem;color:var(--text-weak);margin-bottom:16px;}
.not-found h2{font-size:1.6rem;font-weight:700;color:var(--text-dark);margin-bottom:8px;}
.not-found p{color:var(--text-muted);margin-bottom:20px;}
.not-found .btn{margin-top:8px;}
/* responsive */
@media(max-width:1024px){
  .content-layout{grid-template-columns:1fr;gap:32px;}
  .sidebar{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
  .article-hero{padding:48px 0 40px;}
  .article-hero h1{font-size:1.6rem;}
  .content-body{padding:24px 20px;}
  .content-body .post-content{font-size:0.95rem;}
  .sidebar{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .related-card-img{height:140px;}
  .footer .grid-4{grid-template-columns:1fr;gap:24px;}
  .cta-section h2{font-size:1.4rem;}
  .container{padding:0 16px;}
}
@media(max-width:480px){
  .article-hero h1{font-size:1.3rem;}
  .article-meta{font-size:0.8rem;gap:10px;}
  .content-body{padding:16px;}
  .btn-primary,.btn-outline,.btn-white{padding:8px 18px;font-size:0.85rem;}
}

/* roulang page: category2 */
:root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .page-wrapper { overflow-x: hidden; }

        /* ===== Header / Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 0 0;
            height: 68px;
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }
        .logo-wrap i { color: var(--primary); font-size: 1.6rem; }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-link {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover { color: var(--primary); background: rgba(26,86,219,0.06); }
        .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26,86,219,0.25);
        }
        .nav-link.active:hover { background: var(--primary-dark); }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(26,86,219,0.2);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,86,219,0.3); }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 8px 22px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-main); cursor: pointer; padding: 4px; }

        @media (max-width: 768px) {
            .nav-menu { display: none; position: absolute; top: 68px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 20px 24px; gap: 12px; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-lg); }
            .nav-menu.open { display: flex; }
            .nav-link { width: 100%; text-align: center; padding: 12px; }
            .mobile-toggle { display: block; }
            .header .container .btn-primary { display: none; }
            .nav-menu .btn-primary { display: inline-flex; margin-top: 8px; width: 100%; justify-content: center; }
        }
        @media (max-width: 520px) {
            .logo-wrap { font-size: 1.3rem; }
            .container { padding: 0 16px; }
        }

        /* ===== Hero / Banner ===== */
        .banner {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #0f172a 100%);
            overflow: hidden;
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26,86,219,0.15) 0%, transparent 70%);
        }
        .banner-content { position: relative; z-index: 2; max-width: 800px; }
        .banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .banner p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.7);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .banner .badge-group { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 20px; }
        .banner .badge {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.15);
            color: #fff;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .banner { min-height: 280px; padding: 60px 16px 40px; }
            .banner h1 { font-size: 2rem; }
            .banner p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .banner h1 { font-size: 1.6rem; }
        }

        /* ===== Section通用 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: #f1f5f9; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }
        .mb-12 { margin-bottom: 48px; }
        .mb-8 { margin-bottom: 32px; }
        .mb-6 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 16px; }
        .mt-8 { margin-top: 32px; }
        .mt-6 { margin-top: 24px; }
        .mt-4 { margin-top: 16px; }
        .gap-4 { gap: 16px; }
        .gap-6 { gap: 24px; }
        .gap-8 { gap: 32px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-center { justify-content: center; }
        .justify-between { justify-content: space-between; }
        .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; }
        @media (max-width: 1024px) { .grid-4 { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 768px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } .grid-4 { grid-template-columns: 1fr 1fr; } .section { padding: 56px 0; } .section-title { font-size: 1.6rem; } }
        @media (max-width: 520px) { .grid-4 { grid-template-columns: 1fr; } }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
        .card-body { padding: 22px 24px 26px; }
        .card-tag {
            display: inline-block;
            background: rgba(26,86,219,0.08);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
        .card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }
        .card .meta { display: flex; align-items: center; gap: 16px; margin-top: 14px; font-size: 0.8rem; color: var(--text-light); }
        .card .meta i { margin-right: 4px; }

        /* ===== Step / Timeline ===== */
        .step-list { display: flex; flex-direction: column; gap: 28px; max-width: 800px; margin: 0 auto; }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--bg-card);
            padding: 24px 28px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-md); }
        .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .step-content h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
        .step-content p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }
        @media (max-width: 520px) { .step-item { flex-direction: column; align-items: flex-start; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            padding: 18px 24px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1rem; gap: 12px; }
        .faq-question i { color: var(--primary); transition: 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-top: 0; color: var(--text-muted); font-size: 0.92rem; line-height: 1.8; }
        .faq-item.open .faq-answer { max-height: 300px; padding-top: 14px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            padding: 72px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.65); font-size: 1.05rem; max-width: 560px; margin: 0 auto 28px; line-height: 1.8; }
        .cta-section .btn-primary { background: var(--accent); color: #0f172a; font-size: 1rem; padding: 14px 36px; box-shadow: 0 8px 24px rgba(245,158,11,0.3); }
        .cta-section .btn-primary:hover { background: var(--accent-light); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(245,158,11,0.4); }
        @media (max-width: 768px) { .cta-section h2 { font-size: 1.6rem; } .cta-section { padding: 48px 16px; } }

        /* ===== Footer ===== */
        .footer {
            background: #0b1120;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer .grid-4 { gap: 32px; }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-link {
            display: block;
            font-size: 0.88rem;
            color: rgba(240,250,255,0.55);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-link:hover { color: #fff; padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            margin-top: 32px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(240,250,255,0.35);
        }
        @media (max-width: 768px) { .footer .grid-4 > div { margin-bottom: 16px; } .footer { padding: 40px 0 20px; } }

        /* ===== Utility ===== */
        .text-sm { font-size: 0.88rem; }
        .text-xs { font-size: 0.78rem; }
        .font-bold { font-weight: 700; }
        .font-semibold { font-weight: 600; }
        .text-muted { color: var(--text-muted); }
        .text-primary { color: var(--primary); }
        .rounded-full { border-radius: 9999px; }
        .shadow-md { box-shadow: var(--shadow-md); }
        .border { border: 1px solid var(--border-color); }
        .bg-white { background: #fff; }
        .bg-alt { background: #f1f5f9; }
        .w-full { width: 100%; }

        /* 图片装饰 */
        .img-radial-mask { position: relative; }
        .img-radial-mask::after { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at center, transparent 50%, rgba(15,23,42,0.3) 100%); border-radius: inherit; pointer-events: none; }

        /* 分类特色标签 */
        .feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(26,86,219,0.07);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 500;
        }
        .feature-tag i { font-size: 0.7rem; }