/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #4F46E5;
            --primary-light: #818CF8;
            --primary-dark: #3730A3;
            --primary-bg: #EEF2FF;
            --secondary: #F59E0B;
            --secondary-light: #FCD34D;
            --accent: #EC4899;
            --accent-light: #F9A8D4;
            --bg: #FFFFFF;
            --bg-alt: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #0F172A;
            --bg-dark-alt: #1E293B;
            --text: #1E293B;
            --text-medium: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --text-white: #F1F5F9;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.08);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; font-size: inherit; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.75rem; }
        h2 { font-size: 2.125rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 辅助 ===== */
        .section-padding { padding: 96px 0; }
        .section-padding-sm { padding: 64px 0; }
        .text-center { text-align: center; }
        .text-light { color: var(--text-light); }
        .text-white { color: var(--text-white); }
        .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.2;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .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 32px rgba(79,70,229,0.3);
        }
        .btn-primary:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(79,70,229,0.2);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-ghost {
            background: rgba(255,255,255,0.12);
            color: #fff;
            border-color: rgba(255,255,255,0.25);
        }
        .btn-ghost:hover {
            background: rgba(255,255,255,0.22);
            border-color: rgba(255,255,255,0.4);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.875rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 18px 40px;
            font-size: 1.125rem;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .badge-hot {
            background: #FEF2F2;
            color: #DC2626;
        }
        .badge-new {
            background: #ECFDF5;
            color: #059669;
        }
        .badge-secondary {
            background: #FEF3C7;
            color: #D97706;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.8125rem;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-light);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .tag:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-light);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .card-body { padding: 28px; }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }

        /* ===== 分隔线 ===== */
        .divider { width: 60px; height: 4px; border-radius: 4px; background: var(--primary); margin: 16px 0; }
        .divider-center { margin-left: auto; margin-right: auto; }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 32px rgba(0,0,0,0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
        }
        .site-logo i { font-size: 1.6rem; color: var(--secondary); }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main { display: flex; align-items: center; gap: 8px; }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 0.9375rem;
            color: var(--text-medium);
            transition: var(--transition);
            position: relative;
        }
        .nav-main a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-main a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        .nav-actions { display: flex; align-items: center; gap: 16px; }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 100px;
            padding: 0 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 4px rgba(79,70,229,0.08);
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 8px;
            font-size: 0.875rem;
            color: var(--text);
            outline: none;
            width: 160px;
        }
        .nav-search input::placeholder { color: var(--text-lighter); }
        .nav-search button { color: var(--text-light); padding: 8px 4px; transition: var(--transition); }
        .nav-search button:hover { color: var(--primary); }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .hamburger span { display: block; width: 24px; height: 2.5px; background: var(--text); border-radius: 4px; transition: var(--transition); }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero ===== */
        .hero {
            padding: 160px 0 96px;
            background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #FEF3C7 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(79,70,229,0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(79,70,229,0.1);
            color: var(--primary);
            padding: 6px 18px 6px 12px;
            border-radius: 100px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero-badge i { font-size: 1rem; }
        .hero h1 { font-size: 3.25rem; line-height: 1.15; margin-bottom: 20px; color: var(--text); }
        .hero h1 span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-medium);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(79,70,229,0.12);
        }
        .hero-stat h3 { font-size: 1.75rem; color: var(--primary); }
        .hero-stat p { font-size: 0.875rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== 平台特色 ===== */
        .features { background: var(--bg); }
        .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .feature-card {
            padding: 36px 28px;
            border-radius: var(--radius-lg);
            background: var(--bg-alt);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            text-align: center;
        }
        .feature-card:hover {
            background: var(--bg-card);
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: var(--primary-bg);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: #fff;
        }
        .feature-icon.purple { background: linear-gradient(135deg, #4F46E5, #818CF8); }
        .feature-icon.amber { background: linear-gradient(135deg, #F59E0B, #FCD34D); }
        .feature-icon.pink { background: linear-gradient(135deg, #EC4899, #F9A8D4); }
        .feature-icon.teal { background: linear-gradient(135deg, #14B8A6, #5EEAD4); }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .feature-card p { font-size: 0.9375rem; color: var(--text-light); line-height: 1.7; }

        /* ===== 热门游戏推荐 ===== */
        .hot-games { background: var(--bg-alt); }
        .section-header { margin-bottom: 48px; }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { color: var(--text-light); font-size: 1.1rem; max-width: 540px; }
        .games-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .game-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .game-card-img {
            aspect-ratio: 16/10;
            background: linear-gradient(135deg, var(--primary-bg), #E0E7FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .game-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.3));
        }
        .game-card-img i { position: relative; z-index: 1; }
        .game-card-body { padding: 24px 24px 28px; }
        .game-card-body .badge { margin-bottom: 10px; }
        .game-card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .game-card-body p { font-size: 0.9rem; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }
        .game-tags { display: flex; gap: 8px; flex-wrap: wrap; }

        /* ===== 最新游戏资讯 (CMS) ===== */
        .latest-news { background: var(--bg); }
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .news-card {
            display: flex;
            gap: 20px;
            padding: 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--primary-bg);
        }
        .news-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.4rem;
        }
        .news-content { flex: 1; min-width: 0; }
        .news-content .meta { display: flex; align-items: center; gap: 12px; font-size: 0.8125rem; color: var(--text-lighter); margin-bottom: 6px; }
        .news-content .meta .badge { font-size: 0.6875rem; padding: 2px 10px; }
        .news-content h3 { font-size: 1.05rem; margin-bottom: 6px; line-height: 1.5; }
        .news-content h3 a { color: var(--text); }
        .news-content h3 a:hover { color: var(--primary); }
        .news-content p { font-size: 0.875rem; color: var(--text-light); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 64px 24px;
            color: var(--text-light);
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
        }
        .news-empty i { font-size: 2.5rem; color: var(--text-lighter); margin-bottom: 16px; display: block; }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-alt) 100%);
            padding: 80px 0;
        }
        .stats-section h2 { color: var(--text-white); margin-bottom: 12px; }
        .stats-section .section-header p { color: var(--text-lighter); }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 48px; }
        .stat-item { text-align: center; padding: 32px 16px; border-radius: var(--radius-lg); background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06); }
        .stat-number { font-size: 2.75rem; font-weight: 800; color: #fff; line-height: 1.1; margin-bottom: 6px; }
        .stat-number span { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .stat-label { font-size: 0.9375rem; color: var(--text-lighter); }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-alt); }
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-bg); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 28px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            color: var(--text);
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--text-lighter); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 28px;
            color: var(--text-light);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 28px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 700px;
            height: 700px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2.25rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.15rem; max-width: 560px; margin: 0 auto 32px; }
        .cta-section .btn-ghost { font-size: 1.05rem; padding: 16px 40px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-lighter);
            padding: 64px 0 32px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .site-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 0.9rem; color: var(--text-lighter); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-lighter);
        }
        .footer-bottom a { color: var(--text-lighter); }
        .footer-bottom a:hover { color: var(--secondary); }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-lighter);
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== 移动端导航 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .games-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .nav-search input { width: 120px; }
        }

        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.65rem; }
            h3 { font-size: 1.25rem; }
            .section-padding { padding: 64px 0; }
            .section-padding-sm { padding: 48px 0; }

            .nav-main { display: none; }
            .hamburger { display: flex; }
            .nav-main.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-main.open a { padding: 12px 16px; border-radius: var(--radius); }
            .nav-main.open a.active::after { display: none; }
            .nav-main.open a.active { background: var(--primary-bg); }

            .hero { padding: 120px 0 64px; }
            .hero h1 { font-size: 2.25rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stats .hero-stat { flex: 1; min-width: 80px; }

            .features-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .feature-card { padding: 24px 20px; }

            .games-grid { grid-template-columns: 1fr; gap: 20px; }

            .news-grid { grid-template-columns: 1fr; gap: 20px; }
            .news-card { padding: 20px; }

            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-number { font-size: 2rem; }

            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .nav-actions .btn { display: none; }
            .nav-search input { width: 100px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            h1 { font-size: 1.75rem; }
            h2 { font-size: 1.4rem; }
            .hero h1 { font-size: 1.85rem; }
            .hero p { font-size: 0.9375rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .stat-item { padding: 24px 16px; }
            .cta-section h2 { font-size: 1.65rem; }
            .cta-section .btn-ghost { width: 100%; }
            .faq-question { padding: 16px 20px; font-size: 0.95rem; }
            .faq-answer { padding: 0 20px; }
            .faq-item.active .faq-answer { padding: 0 20px 20px; }
            .nav-search input { width: 80px; font-size: 0.8rem; }
            .nav-search { padding: 0 10px; }
        }

        /* ===== 可访问性 ===== */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
        }
        :focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 16px;
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            z-index: 10000;
            font-weight: 600;
        }
        .skip-link:focus { top: 16px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #a5b4fc;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #ec4899;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #1e293b;
            --bg-soft: #eef2ff;
            --text-primary: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 4px 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', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-primary); font-weight: 700; }
        h1 { font-size: 2.25rem; }
        h2 { font-size: 1.75rem; }
        h3 { font-size: 1.25rem; }
        h4 { font-size: 1.1rem; }

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

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .site-logo i { font-size: 1.5rem; color: var(--secondary); }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-main a i { font-size: 0.85rem; color: var(--text-muted); transition: color var(--transition); }
        .nav-main a:hover,
        .nav-main a:focus-visible { background: var(--bg-soft); color: var(--primary); }
        .nav-main a:hover i,
        .nav-main a:focus-visible i { color: var(--primary); }
        .nav-main a.active,
        .nav-main a[aria-current="page"] { background: var(--primary); color: var(--text-white); box-shadow: 0 4px 12px rgba(99,102,241,0.3); }
        .nav-main a.active i,
        .nav-main a[aria-current="page"] i { color: var(--text-white); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

        /* ===== 文章页主体 ===== */
        .article-wrapper {
            padding-top: calc(var(--header-h) + 40px);
            padding-bottom: 60px;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--primary); }
        .article-breadcrumb a:hover { text-decoration: underline; }
        .article-breadcrumb .sep { color: var(--text-light); }
        .article-header {
            margin-bottom: 36px;
        }
        .article-header .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-top: 16px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-header .article-meta i { margin-right: 6px; color: var(--primary-light); }
        .article-header .article-meta .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--bg-soft);
            color: var(--primary);
        }
        .article-cover {
            width: 100%;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
            background: var(--border-light);
            aspect-ratio: 16/9;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-cover .placeholder-icon {
            font-size: 4rem;
            color: var(--text-light);
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            line-height: 1.85;
            font-size: 1.05rem;
            color: var(--text-body);
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            margin-top: 32px;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .article-content h2:first-child,
        .article-content h3:first-child,
        .article-content h4:first-child { margin-top: 0; }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content p:last-child { margin-bottom: 0; }
        .article-content ul,
        .article-content ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 8px; }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--primary-dark); }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: var(--bg-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-body);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px auto;
            max-width: 100%;
            box-shadow: var(--shadow-sm);
        }
        .article-content code {
            background: var(--bg-soft);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-content pre {
            background: var(--bg-dark);
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-content pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-soft);
            color: var(--primary);
            transition: all var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: var(--text-white); }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            background: var(--bg-soft);
            color: var(--text-body);
            transition: all var(--transition);
            font-size: 0.95rem;
        }
        .article-nav a:hover { background: var(--primary); color: var(--text-white); }

        /* ===== 未找到文章 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .not-found-box .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            background: var(--primary);
            color: var(--text-white);
            transition: all var(--transition);
        }
        .not-found-box .btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 相关文章 ===== */
        .related-section {
            margin-top: 48px;
        }
        .related-section h2 {
            font-size: 1.5rem;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h2 i { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .related-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
        .related-card h3 a { color: var(--text-primary); }
        .related-card h3 a:hover { color: var(--primary); }
        .related-card .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .related-card .meta i { margin-right: 4px; }

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary { background: var(--primary); color: var(--text-white); box-shadow: 0 4px 14px rgba(99,102,241,0.3); }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(99,102,241,0.4); }
        .btn-secondary { background: var(--bg-soft); color: var(--primary); }
        .btn-secondary:hover { background: var(--primary); color: var(--text-white); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #cbd5e1;
            padding: 56px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 16px; display: inline-flex; }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: #94a3b8; max-width: 400px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; color: var(--text-white); margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col ul li { margin-bottom: 10px; font-size: 0.9rem; }
        .footer-col ul li a { color: #94a3b8; transition: color var(--transition); display: inline-flex; align-items: center; }
        .footer-col ul li a:hover { color: var(--primary-light); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.85rem;
            color: #64748b;
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: #94a3b8;
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-socials a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .article-content { padding: 32px 28px; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .nav-main { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 20px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); gap: 2px; }
            .nav-main.open { display: flex; }
            .nav-main a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav-toggle { display: flex; }
            .header-inner { gap: 12px; }
            .site-logo { font-size: 1.15rem; }
            .site-logo i { font-size: 1.2rem; }
            .article-wrapper { padding-top: calc(var(--header-h) + 24px); }
            .article-content { padding: 24px 18px; }
            .article-content h1 { font-size: 1.6rem; }
            .article-content h2 { font-size: 1.35rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .related-grid { grid-template-columns: 1fr; }
            .article-nav { flex-direction: column; align-items: stretch; }
            .article-nav a { justify-content: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-header .article-meta { gap: 10px 16px; font-size: 0.82rem; }
            .article-cover .placeholder-icon { font-size: 2.5rem; }
            .not-found-box { padding: 48px 16px; }
        }

        /* ===== 焦点样式 ===== */
        a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }

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

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6366f1;
            --primary-light: #818cf8;
            --primary-dark: #4f46e5;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --secondary-dark: #d97706;
            --accent: #10b981;
            --bg: #f1f5f9;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text: #0f172a;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.14);
            --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;
            --container-max: 1200px;
            --header-h: 64px;
            --spacing-section: 80px;
            --spacing-block: 48px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button { font: inherit; cursor: pointer; border: none; background: none; }
        input, textarea { font: inherit; border: none; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.75rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        p:last-child { margin-bottom: 0; }
        ::selection { background: var(--primary); color: #fff; }
        :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .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: var(--shadow-md); }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .btn-secondary:hover { background: var(--secondary-dark); border-color: var(--secondary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover { background: var(--bg); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-lg { padding: 14px 36px; font-size: 1.1rem; border-radius: var(--radius-md); }
        .btn-sm { padding: 6px 16px; font-size: 0.85rem; border-radius: 4px; }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--border);
            color: var(--text-light);
        }
        .badge-primary { background: rgba(99,102,241,0.12); color: var(--primary); }
        .badge-secondary { background: rgba(245,158,11,0.12); color: var(--secondary-dark); }
        .badge-accent { background: rgba(16,185,129,0.12); color: var(--accent); }
        .badge-hot { background: rgba(239,68,68,0.12); color: #ef4444; }
        .badge-new { background: rgba(99,102,241,0.12); color: var(--primary); }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary-light); }
        .card-body { padding: 24px; }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
        .card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
        .card-text { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }
        .card-footer { padding: 16px 24px; border-top: 1px solid var(--border); background: var(--border-light); display: flex; align-items: center; gap: 12px; }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            height: var(--header-h);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            gap: 16px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .site-logo i { color: var(--primary); font-size: 1.4rem; }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-main::-webkit-scrollbar { display: none; }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .nav-main a:hover { color: var(--primary); background: rgba(99,102,241,0.06); }
        .nav-main a.active { color: var(--primary); background: rgba(99,102,241,0.10); font-weight: 600; }
        .nav-main a.active::after { content: ''; position: absolute; bottom: -2px; left: 16px; right: 16px; height: 2px; background: var(--primary); border-radius: 2px; }
        .nav-main a i { font-size: 0.85rem; }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .search-toggle:hover { background: rgba(99,102,241,0.08); color: var(--primary); }
        .mobile-menu-btn {
            display: none;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .mobile-menu-btn:hover { background: rgba(99,102,241,0.08); color: var(--primary); }

        /* 移动端导航抽屉 */
        .mobile-nav-overlay {
            position: fixed;
            inset: 0;
            z-index: 2000;
            background: rgba(0,0,0,0.4);
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
        }
        .mobile-nav-overlay.open { opacity: 1; visibility: visible; }
        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 300px;
            max-width: 80vw;
            background: var(--bg-white);
            z-index: 2001;
            padding: 24px;
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-xl);
            overflow-y: auto;
        }
        .mobile-nav-drawer.open { transform: translateX(0); }
        .mobile-nav-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav-drawer .drawer-header .site-logo { font-size: 1.1rem; }
        .drawer-close {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .drawer-close:hover { background: rgba(99,102,241,0.08); color: var(--primary); }
        .mobile-nav-list { display: flex; flex-direction: column; gap: 4px; }
        .mobile-nav-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .mobile-nav-list a:hover { background: rgba(99,102,241,0.06); color: var(--primary); }
        .mobile-nav-list a.active { background: rgba(99,102,241,0.10); color: var(--primary); font-weight: 600; }
        .mobile-nav-list a i { width: 20px; text-align: center; color: var(--primary); }

        /* 搜索面板 */
        .search-panel {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 3000;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            padding: 24px;
            box-shadow: var(--shadow-lg);
            transform: translateY(-100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .search-panel.open { transform: translateY(0); }
        .search-panel-inner { max-width: 640px; margin: 0 auto; display: flex; gap: 12px; align-items: center; }
        .search-panel input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            background: var(--border-light);
            border: 2px solid transparent;
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .search-panel input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(99,102,241,0.10); }
        .search-panel .search-close {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .search-panel .search-close:hover { background: rgba(99,102,241,0.08); color: var(--primary); }

        /* ===== Hero ===== */
        .hero-guide {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4338ca 100%);
            overflow: hidden;
        }
        .hero-guide::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.25) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 20%, rgba(245,158,11,0.12) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-guide .container { position: relative; z-index: 1; }
        .hero-guide-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-guide-content { max-width: 600px; }
        .hero-guide-content .badge { background: rgba(255,255,255,0.12); color: var(--secondary-light); margin-bottom: 16px; }
        .hero-guide-content h1 { color: #fff; font-size: 2.8rem; margin-bottom: 16px; line-height: 1.15; }
        .hero-guide-content h1 span { color: var(--secondary-light); }
        .hero-guide-content p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin-bottom: 28px; max-width: 480px; }
        .hero-guide-actions { display: flex; gap: 12px; flex-wrap: wrap; }
        .hero-guide-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-guide-visual .visual-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            width: 100%;
            max-width: 480px;
        }
        .hero-guide-visual .visual-card {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.10);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .hero-guide-visual .visual-card:hover { background: rgba(255,255,255,0.14); transform: translateY(-4px); }
        .hero-guide-visual .visual-card i { font-size: 2rem; color: var(--secondary-light); margin-bottom: 8px; }
        .hero-guide-visual .visual-card h4 { color: #fff; font-size: 1rem; margin-bottom: 4px; }
        .hero-guide-visual .visual-card p { color: rgba(255,255,255,0.5); font-size: 0.8rem; margin: 0; }

        /* ===== 板块通用 ===== */
        .section { padding: var(--spacing-section) 0; }
        .section-alt { background: var(--bg-white); }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { color: var(--text-muted); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
        .section-header .badge { margin-bottom: 12px; }

        /* ===== 攻略分类 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: default;
        }
        .category-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: var(--primary-light); }
        .category-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
        }
        .category-card .icon-wrap.rpg { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
        .category-card .icon-wrap.slg { background: linear-gradient(135deg, #f59e0b, #f97316); }
        .category-card .icon-wrap.casual { background: linear-gradient(135deg, #10b981, #34d399); }
        .category-card .icon-wrap.action { background: linear-gradient(135deg, #ef4444, #f43f5e); }
        .category-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .category-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }
        .category-card .badge { margin-top: 12px; }

        /* ===== 最新攻略 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .guide-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary-light); }
        .guide-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--border-light);
        }
        .guide-card .card-img-wrap .placeholder-img {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: var(--text-muted);
            background: linear-gradient(135deg, #e2e8f0, #f1f5f9);
        }
        .guide-card .card-img-wrap .badge {
            position: absolute;
            top: 12px;
            left: 12px;
        }
        .guide-card .card-body { padding: 20px; }
        .guide-card .card-body .meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; }
        .guide-card .card-body .meta i { margin-right: 4px; }
        .guide-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .guide-card .card-body p { font-size: 0.88rem; color: var(--text-light); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .guide-card .card-body .tags { display: flex; gap: 6px; flex-wrap: wrap; }

        /* ===== 热门排行 ===== */
        .rank-list { max-width: 800px; margin: 0 auto; }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            transition: all var(--transition);
        }
        .rank-item:hover { box-shadow: var(--shadow-sm); border-color: var(--primary-light); transform: translateX(4px); }
        .rank-item .rank-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
            background: var(--border);
            color: var(--text-light);
        }
        .rank-item:nth-child(1) .rank-num { background: linear-gradient(135deg, #f59e0b, #f97316); color: #fff; }
        .rank-item:nth-child(2) .rank-num { background: linear-gradient(135deg, #94a3b8, #64748b); color: #fff; }
        .rank-item:nth-child(3) .rank-num { background: linear-gradient(135deg, #d97706, #b45309); color: #fff; }
        .rank-item .rank-info { flex: 1; }
        .rank-item .rank-info h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .rank-item .rank-info p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }
        .rank-item .rank-stats { display: flex; align-items: center; gap: 16px; color: var(--text-muted); font-size: 0.85rem; flex-shrink: 0; }
        .rank-item .rank-stats i { margin-right: 4px; }
        .rank-item .btn { flex-shrink: 0; }

        /* ===== 攻略技巧 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .tip-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .tip-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary-light); }
        .tip-card .tip-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
        }
        .tip-card .tip-icon.tip-1 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
        .tip-card .tip-icon.tip-2 { background: linear-gradient(135deg, #f59e0b, #f97316); }
        .tip-card .tip-icon.tip-3 { background: linear-gradient(135deg, #10b981, #34d399); }
        .tip-card .tip-icon.tip-4 { background: linear-gradient(135deg, #ec4899, #f43f5e); }
        .tip-card .tip-content { flex: 1; }
        .tip-card .tip-content h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .tip-card .tip-content p { font-size: 0.88rem; color: var(--text-light); margin: 0; line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover { background: rgba(99,102,241,0.03); }
        .faq-question i { color: var(--primary); font-size: 0.9rem; transition: transform var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }
        .faq-answer p { margin-bottom: 8px; }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 100%, rgba(245,158,11,0.10) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .site-logo i { color: var(--secondary-light); }
        .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 360px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 700; }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col ul li { font-size: 0.88rem; color: rgba(255,255,255,0.5); transition: color var(--transition); }
        .footer-col ul li:hover { color: rgba(255,255,255,0.8); }
        .footer-col ul li a { display: flex; align-items: center; }
        .footer-col ul li a:hover { color: var(--secondary-light); }
        .footer-col ul li i { color: var(--secondary-light); opacity: 0.6; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.5);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-socials a:hover { background: var(--primary); color: #fff; transform: scale(1.1); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-guide-grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
            .hero-guide-content { max-width: 100%; }
            .hero-guide-content p { margin-left: auto; margin-right: auto; }
            .hero-guide-actions { justify-content: center; }
            .hero-guide-visual .visual-grid { max-width: 400px; margin: 0 auto; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .guide-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            :root { --spacing-section: 56px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero-guide { padding: 48px 0 40px; }
            .hero-guide-content h1 { font-size: 2rem; }
            .hero-guide-content p { font-size: 0.95rem; }
            .hero-guide-visual .visual-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .hero-guide-visual .visual-card { padding: 16px; }
            .hero-guide-visual .visual-card i { font-size: 1.5rem; }
            .nav-main { display: none; }
            .mobile-menu-btn { display: flex; }
            .category-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .guide-grid { grid-template-columns: 1fr; }
            .tips-grid { grid-template-columns: 1fr; }
            .rank-item { flex-wrap: wrap; gap: 12px; }
            .rank-item .rank-stats { width: 100%; }
            .rank-item .btn { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section-header { margin-bottom: 32px; }
            .cta-section { padding: 48px 0; }
            .cta-section h2 { font-size: 1.6rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-guide-content h1 { font-size: 1.6rem; }
            .hero-guide-visual .visual-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
            .hero-guide-visual .visual-card { padding: 12px; }
            .hero-guide-visual .visual-card i { font-size: 1.2rem; }
            .hero-guide-visual .visual-card h4 { font-size: 0.85rem; }
            .category-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .category-card { padding: 20px 16px; }
            .category-card .icon-wrap { width: 48px; height: 48px; font-size: 1.2rem; }
            .section-header h2 { font-size: 1.4rem; }
            .guide-card .card-body { padding: 16px; }
            .rank-item { padding: 16px; }
            .faq-question { padding: 16px; font-size: 0.92rem; }
            .faq-answer { padding: 0 16px 16px; }
            .tip-card { flex-direction: column; padding: 16px; }
            .site-footer { padding: 40px 0 0; }
            .btn-lg { padding: 12px 28px; font-size: 1rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .gap-1 { gap: 8px; }
        .gap-2 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }