/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ef4444;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 48px rgba(0,0,0,0.16);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        input:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

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

        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30,64,175,0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30,64,175,0.4);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary {
            background: var(--secondary);
            color: #1e293b;
            box-shadow: 0 4px 14px rgba(245,158,11,0.3);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.4);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }

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

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius);
        }

        .card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(30,64,175,0.1);
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .badge-secondary {
            background: rgba(245,158,11,0.15);
            color: #b45309;
        }
        .badge-accent {
            background: rgba(239,68,68,0.1);
            color: #dc2626;
        }
        .badge-green {
            background: rgba(16,185,129,0.1);
            color: #059669;
        }

        .tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag:hover {
            border-color: var(--primary-light);
            color: var(--primary);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px 0 0;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 12px;
        }

        .hero-gradient {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-gradient::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(ellipse at 30% 50%, rgba(59,130,246,0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 50%, rgba(245,158,11,0.08) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            overflow: hidden;
        }
        .hero-particles span {
            position: absolute;
            width: 6px;
            height: 6px;
            background: rgba(255,255,255,0.15);
            border-radius: 50%;
            animation: float 12s infinite;
        }
        .hero-particles span:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; width: 8px; height: 8px; }
        .hero-particles span:nth-child(2) { top: 60%; left: 25%; animation-delay: 2s; }
        .hero-particles span:nth-child(3) { top: 30%; left: 60%; animation-delay: 4s; width: 10px; height: 10px; }
        .hero-particles span:nth-child(4) { top: 70%; left: 75%; animation-delay: 6s; }
        .hero-particles span:nth-child(5) { top: 15%; left: 85%; animation-delay: 1s; width: 5px; height: 5px; }
        .hero-particles span:nth-child(6) { top: 80%; left: 40%; animation-delay: 3s; }
        .hero-particles span:nth-child(7) { top: 45%; left: 50%; animation-delay: 5s; width: 7px; height: 7px; }
        .hero-particles span:nth-child(8) { top: 55%; left: 15%; animation-delay: 7s; }

        @keyframes float {
            0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
            50% { transform: translateY(-30px) scale(1.5); opacity: 0.8; }
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .nav-blur {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226,232,240,0.6);
        }

        .nav-link {
            position: relative;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 4px;
            transition: var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            width: 100%;
        }

        .mobile-nav {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 20px 24px;
            border-bottom: 1px solid var(--border);
            transform: translateY(-110%);
            opacity: 0;
            transition: var(--transition);
            z-index: 40;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 0;
            font-weight: 500;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--primary);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px;
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .desktop-nav {
                display: none !important;
            }
        }

        .category-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            cursor: pointer;
        }
        .category-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: var(--primary-light);
        }
        .category-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(30,64,175,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .category-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .post-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .post-card .post-img {
            height: 200px;
            background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 2rem;
            flex-shrink: 0;
        }
        .post-card .post-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card .post-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .feature-grid-item {
            display: flex;
            gap: 16px;
            padding: 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .feature-grid-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .feature-grid-item .fg-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(30,64,175,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .feature-grid-item h4 {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .feature-grid-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .cta-gradient {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-gradient::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(245,158,11,0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
        }
        footer a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        footer a:hover {
            color: #fff;
        }
        footer .footer-title {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        footer .footer-link {
            display: block;
            padding: 4px 0;
            font-size: 0.92rem;
        }

        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-secondary);
            background: #fff;
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .empty-state i {
            font-size: 2.5rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        @media (max-width: 520px) {
            .stat-number {
                font-size: 2rem;
            }
            .category-card {
                padding: 24px 16px;
            }
            .post-card .post-img {
                height: 160px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-dark: #1a1a2e;
            --text-main: #2d3436;
            --text-soft: #636e72;
            --text-muted: #b2bec3;
            --border-light: #e9ecef;
            --border-soft: #dfe6e9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-nav: 0 2px 20px rgba(0,0,0,0.06);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background: var(--bg-light);
            line-height: 1.7;
            padding-top: 72px;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; border: none; background: none; font: inherit; }
        input, textarea { font: inherit; outline: none; }
        ul, ol { list-style: none; }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) { .container { padding: 0 16px; } }

        /* ===== 导航 ===== */
        .nav-blur {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            box-shadow: var(--shadow-nav);
        }
        .nav-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-soft);
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        .nav-link.active { color: var(--primary); background: rgba(230,57,70,0.10); font-weight: 600; }
        .desktop-nav { display: flex; align-items: center; gap: 6px; }
        .menu-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; color: var(--text-dark); font-size: 1.25rem; border-radius: var(--radius-sm); transition: var(--transition); }
        .menu-toggle:hover { background: rgba(0,0,0,0.04); }
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 12px 24px 20px;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            gap: 4px;
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
        }
        .mobile-nav a:hover { background: rgba(230,57,70,0.06); color: var(--primary); }
        .mobile-nav a.active { color: var(--primary); background: rgba(230,57,70,0.10); }

        @media (max-width: 900px) {
            .desktop-nav { display: none; }
            .menu-toggle { display: flex; }
        }
        @media (min-width: 901px) {
            .mobile-nav { display: none !important; }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
            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(-1px); box-shadow: 0 6px 20px rgba(230,57,70,0.25); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
        .btn-ghost {
            background: rgba(230,57,70,0.06);
            color: var(--primary);
            border-color: transparent;
        }
        .btn-ghost:hover { background: rgba(230,57,70,0.14); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn-md { padding: 12px 28px; font-size: 0.95rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            white-space: nowrap;
            transition: var(--transition);
        }
        .badge:hover { background: rgba(230,57,70,0.15); }
        .badge-category {
            background: var(--secondary);
            color: #fff;
            font-size: 0.72rem;
            padding: 3px 12px;
            border-radius: 50px;
        }

        /* ===== 文章详情 ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 1; }

        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 48px 56px;
            margin-top: -30px;
            position: relative;
            z-index: 2;
        }
        .article-body h2 { font-size: 1.65rem; font-weight: 700; color: var(--text-dark); margin-top: 2.2em; margin-bottom: 0.8em; }
        .article-body h3 { font-size: 1.3rem; font-weight: 600; color: var(--text-dark); margin-top: 1.8em; margin-bottom: 0.6em; }
        .article-body p { margin-bottom: 1.2em; color: var(--text-main); line-height: 1.8; font-size: 1.05rem; }
        .article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.6em; }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.5em; color: var(--text-main); line-height: 1.7; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(230,57,70,0.04);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-soft);
            font-style: italic;
        }
        .article-body img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-card); }
        .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--primary-dark); }
        .article-body code {
            background: rgba(0,0,0,0.04);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-body pre {
            background: #1a1a2e;
            color: #e4e4e7;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body pre code { background: none; color: inherit; padding: 0; }

        @media (max-width: 768px) {
            .article-body { padding: 28px 20px; margin-top: -20px; }
            .article-body p { font-size: 1rem; }
            .article-body h2 { font-size: 1.35rem; }
            .article-hero { padding: 40px 0 36px; }
        }

        /* ===== 侧边相关 ===== */
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
        .related-card .title { font-weight: 600; color: var(--text-dark); font-size: 1rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

        /* ===== 页脚 ===== */
        footer {
            background: linear-gradient(180deg, #0d1b2a 0%, #1a1a2e 100%);
            color: #c8d6e5;
        }
        .footer-title { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-link { display: block; font-size: 0.88rem; color: #a4b0be; padding: 5px 0; transition: var(--transition); }
        .footer-link:hover { color: var(--primary-light); padding-left: 4px; }

        /* ===== 动画工具 ===== */
        .fade-up { animation: fadeUp 0.6s ease both; }
        @keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
        .fade-in { animation: fadeIn 0.5s ease both; }
        @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar { width: 6px; height: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-light); }
        ::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 10px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-soft); }

        /* ===== 骨架 / 占位 ===== */
        .skeleton { background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: var(--radius-sm); }
        @keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

        /* ===== 响应式额外 ===== */
        @media (max-width: 1024px) {
            .article-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 16px; }
            .article-hero h1 { font-size: 1.5rem !important; }
        }

/* roulang page: category1 */
:root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --primary-light: #ff6f60;
            --secondary: #1a237e;
            --accent: #ffd600;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-section: #16162a;
            --text-white: #f5f5f5;
            --text-muted: #9e9e9e;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --radius-card: 16px;
            --radius-btn: 10px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navigation */
        .nav-blur {
            background: rgba(15, 15, 26, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .nav-link {
            color: #b0b0c0;
            font-size: 0.9rem;
            font-weight: 500;
            padding: 6px 4px;
            transition: color 0.2s ease;
            text-decoration: none;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary-light);
        }

        .nav-link.active {
            color: #ffffff;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(229, 57, 53, 0.35);
        }

        .btn-primary:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            font-weight: 500;
            border-radius: var(--radius-btn);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            transition: all 0.25s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(229, 57, 53, 0.12);
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .menu-toggle:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px 20px;
            background: rgba(15, 15, 26, 0.98);
            border-top: 1px solid var(--border-subtle);
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            color: #b0b0c0;
            padding: 10px 14px;
            border-radius: 10px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.2s;
            font-size: 0.95rem;
        }

        .mobile-nav a:hover {
            background: rgba(229, 57, 53, 0.12);
            color: var(--primary-light);
        }

        /* Section spacing */
        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            line-height: 1.7;
        }

        /* Cards */
        .card-glass {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .card-glass:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: rgba(229, 57, 53, 0.25);
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            text-transform: uppercase;
            border-radius: 100px;
            background: rgba(229, 57, 53, 0.18);
            color: var(--primary-light);
            border: 1px solid rgba(229, 57, 53, 0.15);
        }

        .badge-accent {
            background: rgba(255, 214, 0, 0.15);
            color: #ffd600;
            border-color: rgba(255, 214, 0, 0.15);
        }

        .badge-cool {
            background: rgba(26, 35, 126, 0.35);
            color: #8c9eff;
            border-color: rgba(26, 35, 126, 0.2);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .divider-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
            margin: 16px 0;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 14px;
            padding: 20px 24px;
            transition: border-color 0.3s;
        }

        .faq-item:hover {
            border-color: rgba(229, 57, 53, 0.2);
        }

        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 12px;
            color: var(--text-white);
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .faq-question.open i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: #b0b0c0;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-answer.open {
            max-height: 300px;
            padding-top: 14px;
        }

        /* Footer */
        .footer-title {
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-link {
            display: block;
            color: #9e9e9e;
            font-size: 0.88rem;
            padding: 5px 0;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-link:hover {
            color: var(--primary-light);
        }

        /* Hero */
        .hero-guide {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 40%, #1a1a2e 70%, #0f0f1a 100%);
            overflow: hidden;
        }

        .hero-guide::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(229, 57, 53, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-guide::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 35, 126, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-tagline {
            display: inline-block;
            padding: 6px 18px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 100px;
            background: rgba(229, 57, 53, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(229, 57, 53, 0.12);
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        /* Category grid images */
        .category-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 12px 12px 0 0;
            background: linear-gradient(135deg, #2a2a4a, #1a1a2e);
        }

        /* News card image placeholder */
        .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 12px 12px 0 0;
            background: linear-gradient(135deg, #333366, #1a1a2e);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .menu-toggle {
                display: block;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .hero-guide {
                padding: 110px 0 50px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .container {
                padding: 0 18px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 1.3rem;
            }
            .hero-guide h1 {
                font-size: 1.8rem !important;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }

        /* Focus visible for accessibility */
        a:focus-visible,
        button:focus-visible,
        details summary:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 6px;
        }

        /* Tailwind custom theme */
        .tw-theme {
            --color-primary: #e53935;
            --color-primary-dark: #c62828;
            --color-primary-light: #ff6f60;
        }

/* roulang page: category2 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-section: #16213e;
            --text-white: #f8f9fa;
            --text-muted: #a0aec0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 16px 48px rgba(230, 57, 70, 0.15);
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航 */
        .nav-blur {
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(24px) saturate(1.4);
            -webkit-backdrop-filter: blur(24px) saturate(1.4);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .nav-link {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            text-decoration: none;
            padding: 6px 2px;
            position: relative;
            transition: var(--transition-base);
            letter-spacing: 0.3px;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .nav-link:hover {
            color: var(--text-white);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary-light);
        }

        .nav-link.active::after {
            width: 100%;
            background: var(--primary-light);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            border: none;
            gap: 8px;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.4);
        }

        .btn-outline {
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition-base);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 16px 24px 24px;
            background: rgba(15, 15, 26, 0.98);
            border-top: 1px solid var(--border-subtle);
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            color: var(--text-muted);
            text-decoration: none;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: rgba(230, 57, 70, 0.1);
            color: var(--primary-light);
        }

        /* 板块 */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(230, 57, 70, 0.2);
        }

        .badge-accent {
            background: rgba(244, 162, 97, 0.12);
            color: var(--accent);
            border-color: rgba(244, 162, 97, 0.2);
        }

        .badge-green {
            background: rgba(72, 187, 120, 0.12);
            color: #68d391;
            border-color: rgba(72, 187, 120, 0.2);
        }

        /* 卡片 */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(230, 57, 70, 0.15);
        }

        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: linear-gradient(135deg, #1a1a2e, #16213e);
        }

        .card-body {
            padding: 24px;
        }

        .card-tag {
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            color: var(--primary-light);
            margin-bottom: 6px;
        }

        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text-white);
            text-decoration: none;
            display: block;
            transition: var(--transition-base);
        }

        .card-title:hover {
            color: var(--primary-light);
        }

        .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* hero */
        .hero-section {
            padding: 120px 0 80px;
            background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 40%, #16213e 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* 统计数字 */
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border-radius: 14px;
            border: 1px solid var(--border-subtle);
            padding: 20px 24px;
            transition: var(--transition-base);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.15);
        }

        .faq-question {
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            color: var(--text-white);
        }

        .faq-question i {
            color: var(--primary-light);
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .faq-answer {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-top: 12px;
            display: none;
            border-top: 1px solid var(--border-subtle);
            padding-top: 14px;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* 页脚 */
        .footer-title {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-link {
            display: block;
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition-base);
        }

        .footer-link:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none !important;
            }

            .menu-toggle {
                display: block;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .hero-section {
                padding: 100px 0 60px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .section-subtitle {
                font-size: 0.95rem;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .card-body {
                padding: 18px;
            }

            .hero-section {
                padding: 90px 0 50px;
            }

            .hero-section::before,
            .hero-section::after {
                display: none;
            }

            footer .grid {
                grid-template-columns: 1fr 1fr !important;
            }

            footer .grid>div:first-child {
                grid-column: span 2;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .section-title {
                font-size: 1.25rem;
            }

            .stat-number {
                font-size: 1.5rem;
            }

            footer .grid {
                grid-template-columns: 1fr !important;
            }

            footer .grid>div:first-child {
                grid-column: span 1;
            }

            .card-img {
                height: 160px;
            }

            .hero-section h1 {
                font-size: 1.6rem !important;
            }
        }

        /* 辅助 */
        .text-primary-light {
            color: var(--primary-light);
        }

        .text-primary {
            color: var(--primary);
        }

        .bg-primary-light {
            background: var(--primary-light);
        }

        .border-primary-light {
            border-color: var(--primary-light);
        }

        .hover\:text-primary-light:hover {
            color: var(--primary-light);
        }

        .hover\:bg-primary:hover {
            background: var(--primary);
        }

        .gap-6 {
            gap: 24px;
        }

        .gap-4 {
            gap: 16px;
        }

        .gap-8 {
            gap: 32px;
        }

        .scrollbar-hide {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }

        .delay-100 {
            animation-delay: 0.1s;
        }

        .delay-200 {
            animation-delay: 0.2s;
        }

        .delay-300 {
            animation-delay: 0.3s;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --text-dark: #1a1a2e;
            --text-muted: #6c757d;
            --border-light: #e9ecef;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础重置 ===== */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif; background: var(--bg-light); color: var(--text-dark); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; outline: none; }

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

        /* ===== 导航 ===== */
        .nav-blur { background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-light); }
        .nav-link { font-size: 0.9rem; font-weight: 500; color: #374151; padding: 6px 0; position: relative; white-space: nowrap; }
        .nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); border-radius: 2px; }
        .nav-link:hover { color: var(--primary); }
        .nav-link:hover::after { width: 100%; }
        .nav-link.active { color: var(--primary); }
        .nav-link.active::after { width: 100%; }
        .menu-toggle { display: none; font-size: 1.3rem; color: #1f2937; padding: 6px; }
        @media (max-width: 860px) {
            .desktop-nav { display: none !important; }
            .menu-toggle { display: flex !important; align-items: center; justify-content: center; }
        }
        .mobile-nav { display: none; flex-direction: column; gap: 4px; padding: 12px 24px 20px; background: rgba(255,255,255,0.98); border-top: 1px solid var(--border-light); }
        .mobile-nav.open { display: flex; }
        .mobile-nav a { padding: 12px 0; font-size: 1rem; font-weight: 500; color: #374151; border-bottom: 1px solid #f3f4f6; }
        .mobile-nav a:last-child { border-bottom: none; }
        .mobile-nav a:hover { color: var(--primary); }

        /* ===== 按钮 ===== */
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem; transition: var(--transition); white-space: nowrap; }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(230,57,70,0.35); }
        .btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
        .btn-white { background: #fff; color: var(--primary); }
        .btn-white:hover { background: #f8f9fa; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .btn-sm { padding: 6px 16px; font-size: 0.8rem; border-radius: 6px; }
        .btn-lg { padding: 14px 36px; font-size: 1.05rem; border-radius: var(--radius-sm); }

        /* ===== 卡片 ===== */
        .card { background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); overflow: hidden; transition: var(--transition); }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: var(--transition); }
        .card:hover .card-img { transform: scale(1.03); }
        .card-body { padding: 20px; }
        .card-tag { display: inline-block; padding: 2px 12px; background: rgba(230,57,70,0.1); color: var(--primary); border-radius: 100px; font-size: 0.75rem; font-weight: 600; }
        .card-meta { color: var(--text-muted); font-size: 0.8rem; margin-top: 8px; }

        /* ===== 标签/徽章 ===== */
        .badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 12px; border-radius: 100px; font-size: 0.75rem; font-weight: 600; }
        .badge-primary { background: var(--primary); color: #fff; }
        .badge-secondary { background: var(--secondary); color: #fff; }
        .badge-accent { background: var(--accent); color: #fff; }
        .badge-outline { border: 1px solid var(--border-light); color: var(--text-muted); background: transparent; }

        /* ===== 板块标题 ===== */
        .section-title { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.02em; }
        .section-sub { font-size: 1rem; color: var(--text-muted); margin-top: 6px; }
        @media (max-width: 640px) { .section-title { font-size: 1.4rem; } }

        /* ===== Hero ===== */
        .hero-gradient { background: linear-gradient(135deg, #0d1b2a 0%, #1d3557 50%, #2a4a6e 100%); position: relative; overflow: hidden; }
        .hero-gradient::before { content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(230,57,70,0.15), transparent 70%); pointer-events: none; }
        .hero-gradient::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(244,162,97,0.10), transparent 70%); pointer-events: none; }

        /* ===== 统计数据 ===== */
        .stat-number { font-size: 2.2rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-label { font-size: 0.85rem; color: var(--text-muted); }

        /* ===== 游戏/活动卡片 ===== */
        .game-card { position: relative; border-radius: var(--radius-md); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); transition: var(--transition); }
        .game-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .game-card-img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
        .game-card-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.7), transparent 60%); display: flex; flex-direction: column; justify-content: flex-end; padding: 20px; color: #fff; }
        .game-card-title { font-size: 1.1rem; font-weight: 700; }
        .game-card-meta { font-size: 0.8rem; opacity: 0.85; margin-top: 4px; }

        /* ===== 排行列表 ===== */
        .rank-item { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border-light); }
        .rank-item:last-child { border-bottom: none; }
        .rank-num { width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.8rem; background: #f3f4f6; color: var(--text-muted); flex-shrink: 0; }
        .rank-item:nth-child(1) .rank-num { background: var(--accent); color: #fff; }
        .rank-item:nth-child(2) .rank-num { background: #94a3b8; color: #fff; }
        .rank-item:nth-child(3) .rank-num { background: #cbd5e1; color: #fff; }

        /* ===== FAQ ===== */
        .faq-item { border-bottom: 1px solid var(--border-light); padding: 18px 0; }
        .faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1rem; cursor: pointer; padding: 4px 0; }
        .faq-question i { transition: var(--transition); font-size: 0.9rem; color: var(--text-muted); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }
        .faq-item.open .faq-answer { max-height: 300px; padding-top: 12px; }

        /* ===== CTA区块 ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); border-radius: var(--radius-lg); padding: 48px 40px; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; top: -60%; right: -30%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(255,255,255,0.10), transparent 70%); pointer-events: none; }

        /* ===== 页脚 ===== */
        .footer-title { font-weight: 700; color: #f1f3f5; margin-bottom: 14px; font-size: 0.95rem; }
        .footer-link { display: block; color: #9ca3af; font-size: 0.88rem; padding: 5px 0; transition: var(--transition); }
        .footer-link:hover { color: var(--primary-light); padding-left: 4px; }

        /* ===== 响应式补丁 ===== */
        @media (max-width: 640px) {
            .stat-number { font-size: 1.6rem; }
            .hero-gradient { padding: 40px 0 !important; }
            .cta-section { padding: 32px 20px; }
            .game-card-overlay { padding: 14px; }
            .game-card-title { font-size: 0.95rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 12px; }
            .section-title { font-size: 1.2rem; }
        }

        /* ===== 滚动动画 ===== */
        .fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

        /* ===== 自定义滚动条 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #f1f1f1; }
        ::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: #a1a1a1; }