/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #d4a017;
            --clr-primary-hover: #e8b82e;
            --clr-primary-dark: #b8890a;
            --clr-accent: #c0392b;
            --clr-accent-hover: #e74c3c;
            --clr-bg: #0a0a0a;
            --clr-bg-alt: #111111;
            --clr-bg-card: #1a1a1a;
            --clr-bg-nav: #0d0d0d;
            --clr-text: #f0f0f0;
            --clr-text-muted: #999999;
            --clr-text-dim: #666666;
            --clr-border: #2a2a2a;
            --clr-border-light: #3a3a3a;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 20px rgba(212,160,23,0.15);
            --transition: 0.25s ease;
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --nav-width: 240px;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-body);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--clr-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-primary-hover); }
        a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.25;
            color: var(--clr-text);
        }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: var(--space-md); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        p { margin-bottom: 1rem; color: var(--clr-text-muted); }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-md); }
        .section { padding: var(--space-xl) 0; }
        .section-title { text-align: center; margin-bottom: var(--space-lg); }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--clr-primary);
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .section-title p { max-width: 640px; margin: 0 auto; font-size: 1.05rem; }
        .text-primary { color: var(--clr-primary); }
        .text-accent { color: var(--clr-accent); }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-md);
            font-family: var(--font-body);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--clr-primary);
            color: #0a0a0a;
        }
        .btn-primary:hover {
            background: var(--clr-primary-hover);
            color: #0a0a0a;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-outline {
            background: transparent;
            color: var(--clr-primary);
            border: 2px solid var(--clr-primary);
        }
        .btn-outline:hover {
            background: var(--clr-primary);
            color: #0a0a0a;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--clr-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--clr-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(192,57,43,0.3);
        }
        .btn-lg { padding: 1rem 2.5rem; font-size: 1.05rem; }
        .btn-sm { padding: 0.5rem 1.2rem; font-size: 0.85rem; }
        .btn:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--clr-border);
            color: var(--clr-text-muted);
        }
        .badge-primary { background: rgba(212,160,23,0.15); color: var(--clr-primary); }
        .badge-accent { background: rgba(192,57,43,0.15); color: var(--clr-accent); }
        .badge-hot { background: rgba(192,57,43,0.2); color: #e74c3c; animation: pulse-badge 2s infinite; }
        @keyframes pulse-badge { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }

        /* ===== 布局：左侧导航 + 右侧内容 ===== */
        .site-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 左侧导航 ===== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--clr-bg-nav);
            border-right: 1px solid var(--clr-border);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: var(--space-md) 0;
            overflow-y: auto;
        }
        .side-nav .nav-brand {
            padding: 0 var(--space-md);
            margin-bottom: var(--space-lg);
        }
        .side-nav .nav-brand a {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--clr-primary);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .side-nav .nav-brand a i {
            font-size: 1.6rem;
            color: var(--clr-accent);
        }
        .side-nav .nav-brand a:hover { color: var(--clr-primary-hover); }
        .side-nav .nav-links {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
            padding: 0 var(--space-sm);
        }
        .side-nav .nav-links li a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-md);
            color: var(--clr-text-muted);
            font-weight: 500;
            font-size: 0.92rem;
            transition: all var(--transition);
        }
        .side-nav .nav-links li a i { width: 20px; font-size: 1rem; color: var(--clr-text-dim); }
        .side-nav .nav-links li a:hover {
            background: var(--clr-bg-card);
            color: var(--clr-text);
        }
        .side-nav .nav-links li a:hover i { color: var(--clr-primary); }
        .side-nav .nav-links li a.active {
            background: rgba(212,160,23,0.1);
            color: var(--clr-primary);
            border-left: 3px solid var(--clr-primary);
        }
        .side-nav .nav-links li a.active i { color: var(--clr-primary); }
        .side-nav .nav-footer {
            padding: var(--space-md) var(--space-md) 0;
            border-top: 1px solid var(--clr-border);
            margin-top: auto;
        }
        .side-nav .nav-footer p { font-size: 0.75rem; color: var(--clr-text-dim); margin-bottom: 0; }

        /* ===== 顶部导航（移动端） ===== */
        .top-bar-mobile {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--clr-bg-nav);
            border-bottom: 1px solid var(--clr-border);
            z-index: 1100;
            padding: 0 var(--space-md);
            align-items: center;
            justify-content: space-between;
        }
        .top-bar-mobile .brand-mobile a {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--clr-primary);
        }
        .top-bar-mobile .brand-mobile a i { color: var(--clr-accent); margin-right: 0.4rem; }
        .hamburger {
            background: none;
            border: none;
            color: var(--clr-text);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .hamburger:focus-visible { outline: 2px solid var(--clr-primary); }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.95);
            z-index: 1090;
            padding: var(--space-md);
            overflow-y: auto;
        }
        .mobile-nav-overlay.open { display: block; }
        .mobile-nav-overlay ul { display: flex; flex-direction: column; gap: 0.5rem; }
        .mobile-nav-overlay ul li a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.9rem 1rem;
            border-radius: var(--radius-md);
            color: var(--clr-text-muted);
            font-size: 1.05rem;
            font-weight: 500;
        }
        .mobile-nav-overlay ul li a i { width: 24px; color: var(--clr-text-dim); }
        .mobile-nav-overlay ul li a:hover { background: var(--clr-bg-card); color: var(--clr-text); }
        .mobile-nav-overlay ul li a.active { color: var(--clr-primary); background: rgba(212,160,23,0.08); }

        /* ===== 主要内容区 ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--clr-bg-alt);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,10,10,0.88) 0%, rgba(10,10,10,0.6) 50%, rgba(10,10,10,0.85) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 1;
            width: 100%;
        }
        .hero-content {
            max-width: 780px;
            padding: var(--space-xl) 0;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(212,160,23,0.12);
            border: 1px solid rgba(212,160,23,0.25);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--clr-primary);
            margin-bottom: var(--space-md);
        }
        .hero-content .hero-badge i { font-size: 0.8rem; }
        .hero-content h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: var(--space-sm);
            letter-spacing: -0.01em;
        }
        .hero-content h1 span { color: var(--clr-primary); }
        .hero-content .hero-sub {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--clr-text-muted);
            max-width: 600px;
            margin-bottom: var(--space-md);
            line-height: 1.8;
        }
        .hero-content .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            margin-bottom: var(--space-md);
        }
        .hero-content .hero-stats {
            display: flex;
            gap: var(--space-lg);
            margin-top: var(--space-md);
            padding-top: var(--space-md);
            border-top: 1px solid var(--clr-border);
        }
        .hero-content .hero-stats .stat-item { text-align: left; }
        .hero-content .hero-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--clr-primary);
            line-height: 1.2;
        }
        .hero-content .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            transition: all var(--transition);
        }
        .card:hover {
            border-color: var(--clr-border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(212,160,23,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--clr-primary);
            margin-bottom: var(--space-sm);
        }
        .card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .card p { font-size: 0.92rem; margin-bottom: 0; }

        /* ===== 卡片网格 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }

        /* ===== 内容/资讯卡片 ===== */
        .content-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }
        .content-card:hover {
            border-color: var(--clr-border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .content-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .content-card .card-body { padding: var(--space-md); }
        .content-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--clr-text-dim);
            margin-bottom: 0.5rem;
        }
        .content-card .card-body .meta .cat { color: var(--clr-primary); font-weight: 600; }
        .content-card .card-body h3 { font-size: 1.05rem; margin-bottom: 0.5rem; line-height: 1.4; }
        .content-card .card-body h3 a { color: var(--clr-text); }
        .content-card .card-body h3 a:hover { color: var(--clr-primary); }
        .content-card .card-body p { font-size: 0.88rem; margin-bottom: 0; color: var(--clr-text-dim); }
        .content-card .card-body .read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--clr-primary);
            margin-top: 0.8rem;
        }
        .content-card .card-body .read-more:hover { color: var(--clr-primary-hover); }

        /* ===== 数据/统计区块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .stat-card {
            text-align: center;
            padding: var(--space-md);
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
        }
        .stat-card .stat-icon { font-size: 2rem; color: var(--clr-primary); margin-bottom: 0.5rem; }
        .stat-card .stat-number { font-size: 2.4rem; font-weight: 800; color: var(--clr-text); line-height: 1.2; }
        .stat-card .stat-label { font-size: 0.9rem; color: var(--clr-text-dim); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.75rem; }
        .faq-item {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--clr-border-light); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--clr-text);
            font-size: 0.98rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--clr-primary); }
        .faq-question i { color: var(--clr-primary); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem 1rem;
            display: none;
            color: var(--clr-text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
        }
        .cta-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-inner h2 { margin-bottom: var(--space-sm); }
        .cta-inner p { font-size: 1.05rem; margin-bottom: var(--space-md); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-nav);
            border-top: 1px solid var(--clr-border);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-md);
            margin-bottom: var(--space-md);
        }
        .site-footer .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--clr-primary);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-brand p { font-size: 0.88rem; max-width: 300px; }
        .site-footer h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.8rem; color: var(--clr-text); }
        .site-footer ul li { margin-bottom: 0.4rem; }
        .site-footer ul li a { font-size: 0.88rem; color: var(--clr-text-muted); }
        .site-footer ul li a:hover { color: var(--clr-primary); }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: var(--space-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.82rem;
            color: var(--clr-text-dim);
        }
        .site-footer .footer-bottom a { color: var(--clr-text-dim); }
        .site-footer .footer-bottom a:hover { color: var(--clr-primary); }

        /* ===== 空白状态 ===== */
        .empty-state {
            text-align: center;
            padding: var(--space-lg) var(--space-md);
            color: var(--clr-text-dim);
        }
        .empty-state i { font-size: 3rem; color: var(--clr-border); margin-bottom: var(--space-sm); }
        .empty-state p { font-size: 1rem; }

        /* ===== 响应式：平板及以下 ===== */
        @media (max-width: 1024px) {
            .side-nav { display: none; }
            .top-bar-mobile { display: flex; }
            .main-content { margin-left: 0; padding-top: 60px; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            :root { --space-xl: 4rem; --space-lg: 3rem; --space-md: 1.5rem; }
            .grid-3 { grid-template-columns: 1fr; }
            .grid-2 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .hero { min-height: 70vh; }
            .hero-content .hero-stats { flex-wrap: wrap; gap: var(--space-md); }
            .hero-content .hero-stats .stat-item { flex: 1 1 40%; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .hero-content .hero-actions { flex-direction: column; }
            .hero-content .hero-actions .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
            .stat-card { padding: var(--space-sm); }
            .stat-card .stat-number { font-size: 1.6rem; }
            .content-card .card-img { height: 160px; }
        }

        /* ===== Foundation 覆盖 ===== */
        .button { margin-bottom: 0; }
        .grid-container { max-width: 1280px; padding-left: var(--space-md); padding-right: var(--space-md); }
        .cell { margin-bottom: 0; }

        /* ===== 动画 ===== */
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        .animate-in { animation: fadeInUp 0.6s ease forwards; }
        .animate-delay-1 { animation-delay: 0.1s; }
        .animate-delay-2 { animation-delay: 0.2s; }
        .animate-delay-3 { animation-delay: 0.3s; }

        /* ===== 特色装饰 ===== */
        .glow-line {
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--clr-primary), transparent);
            width: 100%;
            max-width: 200px;
            margin: 0 auto var(--space-md);
        }
        .accent-dot { color: var(--clr-accent); }

        /* ===== 图文区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .feature-block .feature-img img { border-radius: var(--radius-lg); width: 100%; }
        .feature-block.reverse { direction: rtl; }
        .feature-block.reverse > * { direction: ltr; }
        @media (max-width: 768px) {
            .feature-block { grid-template-columns: 1fr; gap: var(--space-md); }
            .feature-block.reverse { direction: ltr; }
        }

        /* ===== 隐藏滚动条 ===== */
        .side-nav::-webkit-scrollbar { width: 4px; }
        .side-nav::-webkit-scrollbar-track { background: transparent; }
        .side-nav::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 2px; }

        /* ===== 搜索框占位（装饰） ===== */
        .search-slot {
            display: flex;
            align-items: center;
            background: var(--clr-bg);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            margin-top: var(--space-sm);
        }
        .search-slot input {
            background: none;
            border: none;
            color: var(--clr-text);
            font-size: 0.85rem;
            flex: 1;
            outline: none;
            font-family: var(--font-body);
        }
        .search-slot input::placeholder { color: var(--clr-text-dim); }
        .search-slot button {
            background: var(--clr-primary);
            border: none;
            color: #0a0a0a;
            padding: 0.4rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.8rem;
            cursor: pointer;
        }
        .search-slot button:hover { background: var(--clr-primary-hover); }

/* roulang page: article */
:root {
    --clr-primary: #1a1a2e;
    --clr-primary-light: #16213e;
    --clr-accent: #f5c518;
    --clr-accent-hover: #e0b014;
    --clr-accent-glow: rgba(245, 197, 24, 0.25);
    --clr-bg: #0f0f1a;
    --clr-bg-card: #1c1c32;
    --clr-bg-card-hover: #252545;
    --clr-bg-section: #14142a;
    --clr-text: #f0f0f0;
    --clr-text-muted: #a0a0b8;
    --clr-text-dim: #6e6e8a;
    --clr-border: #2a2a4a;
    --clr-border-light: #3a3a5a;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
    --shadow-card-hover: 0 14px 48px rgba(0,0,0,0.6);
    --shadow-soft: 0 4px 20px rgba(0,0,0,0.3);
    --shadow-glow-accent: 0 0 30px rgba(245, 197, 24, 0.15);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-med: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-width: 240px;
    --header-h: 64px;
    --max-width: 1200px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-sans);
    background: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--clr-accent); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--clr-accent-hover); text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--clr-accent); outline-offset: 3px; border-radius: 4px; }

img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
input { outline: none; border: none; }

h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--clr-text); }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; color: var(--clr-text-muted); }
p:last-child { margin-bottom: 0; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

.page-layout { display: flex; min-height: 100vh; }

/* ===== 左侧竖向导航 ===== */
.side-nav {
    position: fixed; top: 0; left: 0; width: var(--nav-width); height: 100vh;
    background: var(--clr-primary); border-right: 1px solid var(--clr-border);
    display: flex; flex-direction: column; z-index: 1000; overflow-y: auto;
    backdrop-filter: blur(8px); transition: var(--transition-med);
}
.side-nav .nav-brand {
    padding: 24px 20px 16px; border-bottom: 1px solid var(--clr-border);
}
.side-nav .nav-brand a {
    display: flex; align-items: center; gap: 12px;
    font-size: 1.35rem; font-weight: 800; color: var(--clr-text);
    letter-spacing: -0.02em; text-decoration: none;
}
.side-nav .nav-brand a i { font-size: 1.5rem; color: var(--clr-accent); }
.side-nav .nav-brand a:hover { color: var(--clr-accent); }
.nav-links { flex: 1; padding: 20px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-links li a {
    display: flex; align-items: center; gap: 14px; padding: 12px 16px;
    border-radius: var(--radius-sm); color: var(--clr-text-muted);
    font-weight: 500; font-size: 0.95rem; transition: var(--transition-fast);
    text-decoration: none;
}
.nav-links li a i { width: 20px; text-align: center; font-size: 1.05rem; color: var(--clr-text-dim); transition: var(--transition-fast); }
.nav-links li a:hover { background: rgba(255,255,255,0.06); color: var(--clr-text); }
.nav-links li a:hover i { color: var(--clr-accent); }
.nav-links li a.active { background: rgba(245,197,24,0.12); color: var(--clr-accent); }
.nav-links li a.active i { color: var(--clr-accent); }
.nav-footer { padding: 16px 20px; border-top: 1px solid var(--clr-border); font-size: 0.75rem; color: var(--clr-text-dim); text-align: center; }

/* ===== 右侧主内容区 ===== */
.main-content { margin-left: var(--nav-width); flex: 1; display: flex; flex-direction: column; min-height: 100vh; width: 100%; }

/* ===== 文章头部 ===== */
.article-header {
    position: relative; padding: 60px 0 40px; overflow: hidden;
    background: var(--clr-bg-section);
    border-bottom: 1px solid var(--clr-border);
}
.article-header::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 20% 40%, rgba(245,197,24,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.article-header .container { position: relative; z-index: 2; }
.article-breadcrumb {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    font-size: 0.85rem; color: var(--clr-text-dim); margin-bottom: 20px;
}
.article-breadcrumb a { color: var(--clr-text-muted); text-decoration: none; }
.article-breadcrumb a:hover { color: var(--clr-accent); }
.article-breadcrumb span { color: var(--clr-text-dim); }
.article-breadcrumb .current { color: var(--clr-accent); font-weight: 500; }
.article-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.25; margin-bottom: 20px; color: var(--clr-text); letter-spacing: -0.02em; }
.article-meta {
    display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
    font-size: 0.9rem; color: var(--clr-text-dim); margin-bottom: 16px;
}
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--clr-accent); font-size: 0.85rem; }
.article-meta .category-badge {
    display: inline-block; padding: 3px 14px; border-radius: 20px;
    background: rgba(245,197,24,0.15); color: var(--clr-accent);
    font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px;
}
.article-cover { margin-top: 28px; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
.article-cover img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }

/* ===== 文章正文 ===== */
.article-body-section { padding: 50px 0 30px; background: var(--clr-bg); }
.article-body {
    max-width: 800px; margin: 0 auto; font-size: 1.05rem; line-height: 1.85;
    color: var(--clr-text-muted);
}
.article-body h2 { margin-top: 2rem; margin-bottom: 0.8rem; color: var(--clr-text); }
.article-body h3 { margin-top: 1.6rem; margin-bottom: 0.6rem; color: var(--clr-text); }
.article-body p { margin-bottom: 1.2rem; color: var(--clr-text-muted); }
.article-body ul, .article-body ol { margin-bottom: 1.2rem; padding-left: 1.6rem; color: var(--clr-text-muted); }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 0.4rem; }
.article-body img { margin: 1.6rem 0; border-radius: var(--radius-md); box-shadow: var(--shadow-soft); }
.article-body blockquote {
    border-left: 4px solid var(--clr-accent); padding: 12px 20px; margin: 1.6rem 0;
    background: rgba(245,197,24,0.05); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic; color: var(--clr-text);
}
.article-body a { color: var(--clr-accent); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--clr-accent-hover); }

/* ===== 内容未找到 ===== */
.not-found-block { padding: 80px 0; text-align: center; }
.not-found-block .icon { font-size: 3rem; color: var(--clr-accent); margin-bottom: 20px; }
.not-found-block h2 { font-size: 1.8rem; margin-bottom: 12px; }
.not-found-block p { color: var(--clr-text-dim); margin-bottom: 24px; }
.not-found-block .btn { display: inline-block; }

/* ===== 标签与分享 ===== */
.tag-share-section { padding: 20px 0 40px; background: var(--clr-bg); }
.tag-share-wrap {
    max-width: 800px; margin: 0 auto; display: flex; align-items: center;
    justify-content: space-between; flex-wrap: wrap; gap: 20px;
    padding-top: 20px; border-top: 1px solid var(--clr-border);
}
.tag-list { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tag-list .tag-label { font-size: 0.85rem; color: var(--clr-text-dim); font-weight: 500; }
.tag-list .tag-item {
    display: inline-block; padding: 4px 16px; border-radius: 20px;
    background: var(--clr-bg-card); color: var(--clr-text-muted);
    font-size: 0.8rem; border: 1px solid var(--clr-border-light);
    transition: var(--transition-fast); text-decoration: none;
}
.tag-list .tag-item:hover { background: var(--clr-accent); color: var(--clr-primary); border-color: var(--clr-accent); }
.share-list { display: flex; align-items: center; gap: 12px; }
.share-list .share-label { font-size: 0.85rem; color: var(--clr-text-dim); font-weight: 500; }
.share-list a {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--clr-bg-card); color: var(--clr-text-muted);
    border: 1px solid var(--clr-border-light); transition: var(--transition-fast);
    text-decoration: none; font-size: 1rem;
}
.share-list a:hover { background: var(--clr-accent); color: var(--clr-primary); border-color: var(--clr-accent); transform: translateY(-3px); box-shadow: var(--shadow-glow-accent); }

/* ===== 相关推荐 ===== */
.related-section { padding: 50px 0; background: var(--clr-bg-section); }
.related-section .section-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 32px; display: flex; align-items: center; gap: 12px; }
.related-section .section-title i { color: var(--clr-accent); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--clr-bg-card); border-radius: var(--radius-md);
    border: 1px solid var(--clr-border); overflow: hidden;
    transition: var(--transition-med); text-decoration: none; display: flex; flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card-hover); border-color: var(--clr-accent); }
.related-card .card-img { aspect-ratio: 16/10; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.related-card .card-body h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--clr-text); line-height: 1.4; }
.related-card .card-body p { font-size: 0.85rem; color: var(--clr-text-dim); margin-bottom: 12px; flex: 1; }
.related-card .card-meta { font-size: 0.75rem; color: var(--clr-text-dim); display: flex; align-items: center; gap: 12px; }
.related-card .card-meta i { color: var(--clr-accent); font-size: 0.7rem; }

/* ===== FAQ ===== */
.faq-section { padding: 50px 0; background: var(--clr-bg); }
.faq-section .section-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; text-align: center; }
.faq-section .section-sub { text-align: center; color: var(--clr-text-dim); margin-bottom: 36px; font-size: 0.95rem; }
.faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--clr-bg-card); border-radius: var(--radius-md);
    border: 1px solid var(--clr-border); overflow: hidden;
    transition: var(--transition-fast);
}
.faq-item summary {
    padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--clr-text);
    cursor: pointer; display: flex; align-items: center; justify-content: space-between;
    gap: 16px; list-style: none; transition: var(--transition-fast);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '\f107'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
    font-size: 1rem; color: var(--clr-accent); transition: var(--transition-fast);
    flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item summary:hover { background: rgba(255,255,255,0.03); }
.faq-item .faq-answer { padding: 0 24px 18px; font-size: 0.9rem; color: var(--clr-text-muted); line-height: 1.7; }
.faq-item .faq-answer p { margin-bottom: 0.5rem; }
.faq-item .faq-answer p:last-child { margin-bottom: 0; }

/* ===== CTA ===== */
.cta-section { padding: 60px 0; background: var(--clr-bg-section); text-align: center; border-top: 1px solid var(--clr-border); border-bottom: 1px solid var(--clr-border); }
.cta-section h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.cta-section p { color: var(--clr-text-dim); max-width: 600px; margin: 0 auto 28px; font-size: 1rem; }
.cta-btns { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 32px; border-radius: var(--radius-sm);
    font-weight: 600; font-size: 0.95rem; transition: var(--transition-fast);
    text-decoration: none; border: none; cursor: pointer;
}
.btn-primary { background: var(--clr-accent); color: var(--clr-primary); }
.btn-primary:hover { background: var(--clr-accent-hover); color: var(--clr-primary); transform: translateY(-2px); box-shadow: var(--shadow-glow-accent); }
.btn-outline { background: transparent; color: var(--clr-text); border: 1px solid var(--clr-border-light); }
.btn-outline:hover { background: rgba(255,255,255,0.06); color: var(--clr-accent); border-color: var(--clr-accent); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 0.85rem; }

/* ===== 页脚 ===== */
.site-footer { background: var(--clr-primary); border-top: 1px solid var(--clr-border); padding: 50px 0 0; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand .logo { font-size: 1.3rem; font-weight: 800; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-brand .logo i { color: var(--clr-accent); }
.footer-brand p { font-size: 0.85rem; color: var(--clr-text-dim); line-height: 1.7; margin-bottom: 16px; }
.search-slot { display: flex; border: 1px solid var(--clr-border); border-radius: var(--radius-sm); overflow: hidden; background: var(--clr-bg-card); }
.search-slot input { flex: 1; padding: 10px 16px; background: transparent; color: var(--clr-text); border: none; font-size: 0.85rem; }
.search-slot input::placeholder { color: var(--clr-text-dim); }
.search-slot button { padding: 10px 18px; background: var(--clr-accent); color: var(--clr-primary); border: none; font-size: 0.9rem; transition: var(--transition-fast); }
.search-slot button:hover { background: var(--clr-accent-hover); }
.site-footer h4 { font-size: 0.95rem; font-weight: 600; color: var(--clr-text); margin-bottom: 16px; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul li a { font-size: 0.85rem; color: var(--clr-text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.site-footer ul li a:hover { color: var(--clr-accent); }
.site-footer ul li a i { font-size: 0.8rem; }
.footer-bottom { border-top: 1px solid var(--clr-border); padding: 18px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.8rem; color: var(--clr-text-dim); }
.footer-bottom a { color: var(--clr-text-muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--clr-accent); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
    :root { --nav-width: 220px; }
    .article-title { font-size: 1.8rem; }
    .article-header { padding: 40px 0 30px; }
}

@media (max-width: 768px) {
    .page-layout { flex-direction: column; }
    .side-nav {
        position: relative; width: 100%; height: auto; flex-direction: row;
        flex-wrap: wrap; border-right: none; border-bottom: 1px solid var(--clr-border);
        padding: 0 16px; backdrop-filter: none;
    }
    .side-nav .nav-brand { padding: 14px 0; border-bottom: none; flex: 1; }
    .side-nav .nav-brand a { font-size: 1.15rem; }
    .nav-links { flex: none; flex-direction: row; padding: 0 0 10px; width: 100%; gap: 4px; flex-wrap: wrap; }
    .nav-links li a { padding: 8px 14px; font-size: 0.85rem; }
    .nav-footer { display: none; }
    .main-content { margin-left: 0; }
    .article-header { padding: 32px 0 24px; }
    .article-title { font-size: 1.5rem; }
    .article-meta { gap: 12px; font-size: 0.8rem; }
    .article-body { font-size: 0.95rem; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .tag-share-wrap { flex-direction: column; align-items: flex-start; }
    .cta-section h2 { font-size: 1.4rem; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .side-nav .nav-brand a { font-size: 1rem; }
    .nav-links li a { padding: 6px 12px; font-size: 0.8rem; gap: 8px; }
    .article-title { font-size: 1.3rem; }
    .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
    .btn { padding: 12px 24px; font-size: 0.85rem; }
    .related-card .card-body { padding: 16px; }
    .faq-item summary { padding: 14px 18px; font-size: 0.9rem; }
    .faq-item .faq-answer { padding: 0 18px 14px; }
}

/* ===== 额外排版辅助 ===== */
.text-accent { color: var(--clr-accent); }
.text-dim { color: var(--clr-text-dim); }
.text-muted { color: var(--clr-text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #c62828;
            --clr-primary-dark: #8e0000;
            --clr-primary-light: #ff5f52;
            --clr-accent: #ff8f00;
            --clr-accent-dark: #c56000;
            --clr-accent-light: #ffc046;
            --clr-dark: #121212;
            --clr-dark-2: #1e1e1e;
            --clr-dark-3: #2a2a2a;
            --clr-dark-4: #333;
            --clr-body-bg: #0d0d0d;
            --clr-surface: #1a1a1a;
            --clr-card-bg: #222;
            --clr-card-border: #333;
            --clr-text: #f0f0f0;
            --clr-text-secondary: #b0b0b0;
            --clr-text-muted: #777;
            --clr-border: #2e2e2e;
            --clr-hover-overlay: rgba(255, 255, 255, 0.05);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.7);
            --shadow-glow: 0 0 30px rgba(198, 40, 40, 0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-width: 240px;
            --header-h: 0px;
            --max-width: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 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);
            background: var(--clr-body-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            display: flex;
            min-height: 100vh;
        }

        a {
            color: var(--clr-accent-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--clr-accent);
            outline: none;
        }
        a:focus-visible {
            box-shadow: 0 0 0 3px rgba(255, 143, 0, 0.4);
            border-radius: 4px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== 左侧竖向导航 ===== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--clr-dark-2);
            border-right: 1px solid var(--clr-border);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: 0;
            overflow-y: auto;
            transition: var(--transition);
        }

        .side-nav .nav-brand {
            padding: 28px 20px 18px;
            border-bottom: 1px solid var(--clr-border);
        }

        .side-nav .nav-brand a {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .side-nav .nav-brand a i {
            font-size: 1.6rem;
            color: var(--clr-accent);
        }
        .side-nav .nav-brand a:hover {
            color: var(--clr-accent-light);
        }

        .side-nav .nav-links {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .side-nav .nav-links li a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--clr-text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .side-nav .nav-links li a i {
            font-size: 1.1rem;
            width: 22px;
            text-align: center;
            color: var(--clr-text-muted);
            transition: var(--transition);
        }
        .side-nav .nav-links li a:hover {
            background: var(--clr-hover-overlay);
            color: #fff;
        }
        .side-nav .nav-links li a:hover i {
            color: var(--clr-accent-light);
        }
        .side-nav .nav-links li a.active {
            background: rgba(198, 40, 40, 0.15);
            color: #fff;
            border-left: 3px solid var(--clr-primary);
        }
        .side-nav .nav-links li a.active i {
            color: var(--clr-primary-light);
        }

        .side-nav .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--clr-border);
            font-size: 0.75rem;
            color: var(--clr-text-muted);
            text-align: center;
        }

        /* ===== 右侧主内容区 ===== */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
        }

        /* ===== 移动端顶部导航（默认隐藏） ===== */
        .top-nav-mobile {
            display: none;
            position: sticky;
            top: 0;
            z-index: 999;
            background: var(--clr-dark-2);
            border-bottom: 1px solid var(--clr-border);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
        }
        .top-nav-mobile .logo-mobile a {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .top-nav-mobile .logo-mobile a i {
            color: var(--clr-accent);
        }
        .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover {
            background: var(--clr-hover-overlay);
        }

        /* 移动端下拉菜单 */
        .mobile-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--clr-dark-2);
            border-bottom: 1px solid var(--clr-border);
            padding: 8px 20px 16px;
            box-shadow: var(--shadow-md);
        }
        .mobile-dropdown.open {
            display: block;
        }
        .mobile-dropdown ul {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .mobile-dropdown ul li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            color: var(--clr-text-secondary);
            font-weight: 500;
        }
        .mobile-dropdown ul li a i {
            width: 20px;
            color: var(--clr-text-muted);
        }
        .mobile-dropdown ul li a:hover,
        .mobile-dropdown ul li a.active {
            background: var(--clr-hover-overlay);
            color: #fff;
        }
        .mobile-dropdown ul li a.active i {
            color: var(--clr-primary-light);
        }

        /* ===== Hero 首屏 ===== */
        .hero-event {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            background: var(--clr-dark-3) url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .hero-event::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.55) 70%, rgba(0, 0, 0, 0.3) 100%);
            z-index: 0;
        }
        .hero-event::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(198, 40, 40, 0.12) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-event .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
        }
        .hero-event .hero-badge {
            display: inline-block;
            background: rgba(198, 40, 40, 0.2);
            border: 1px solid rgba(198, 40, 40, 0.4);
            backdrop-filter: blur(6px);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--clr-primary-light);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 20px;
        }
        .hero-event h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            line-height: 1.15;
        }
        .hero-event h1 span {
            color: var(--clr-accent);
        }
        .hero-event .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .hero-event .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--clr-primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(198, 40, 40, 0.3);
        }
        .btn-primary:hover {
            background: var(--clr-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(198, 40, 40, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
        }
        .btn-outline:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            transform: translateY(-2px);
            background: rgba(255, 143, 0, 0.08);
        }
        .btn-accent {
            background: var(--clr-accent);
            color: #000;
            font-weight: 700;
            box-shadow: 0 4px 20px rgba(255, 143, 0, 0.25);
        }
        .btn-accent:hover {
            background: var(--clr-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 143, 0, 0.35);
            color: #000;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-dark {
            background: var(--clr-surface);
        }
        .section-darker {
            background: var(--clr-dark-2);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-header h2 i {
            color: var(--clr-accent);
            margin-right: 10px;
        }
        .section-header p {
            color: var(--clr-text-secondary);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .subtitle-accent {
            display: inline-block;
            color: var(--clr-accent-light);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(198, 40, 40, 0.3);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--clr-dark-4);
        }
        .card .card-body {
            padding: 24px 22px 26px;
        }
        .card .card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card .card-body h3 i {
            color: var(--clr-accent);
            font-size: 1.1rem;
        }
        .card .card-body p {
            color: var(--clr-text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .card .card-body .tag {
            display: inline-block;
            background: rgba(198, 40, 40, 0.12);
            color: var(--clr-primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--clr-accent-light);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 6px;
            transition: var(--transition);
        }
        .card .card-body .card-link:hover {
            gap: 12px;
            color: var(--clr-accent);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            counter-reset: step-counter;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-lg);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(198, 40, 40, 0.25);
        }
        .step-item .step-number {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 4px 16px rgba(198, 40, 40, 0.3);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* ===== 规则/列表区块 ===== */
        .rule-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }
        .rule-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 22px;
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .rule-item:hover {
            border-color: rgba(255, 143, 0, 0.25);
            background: var(--clr-dark-3);
        }
        .rule-item .rule-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(198, 40, 40, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--clr-primary-light);
        }
        .rule-item .rule-text h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .rule-item .rule-text p {
            color: var(--clr-text-secondary);
            font-size: 0.88rem;
            line-height: 1.5;
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            padding: 0 0 0 40px;
            max-width: 720px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(to bottom, var(--clr-primary), var(--clr-accent));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 20px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--clr-primary);
            border: 3px solid var(--clr-body-bg);
            box-shadow: 0 0 0 2px rgba(198, 40, 40, 0.3);
        }
        .timeline-item .tl-date {
            font-size: 0.8rem;
            color: var(--clr-accent-light);
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .timeline-item p {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.08);
        }
        .faq-item .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: #fff;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: var(--clr-hover-overlay);
        }
        .faq-item .faq-q i {
            color: var(--clr-accent);
            font-size: 0.9rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-q.open i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 22px 18px;
            color: var(--clr-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item .faq-a.open {
            display: block;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: var(--clr-dark-3) url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.5) 100%);
            z-index: 0;
            border-radius: inherit;
        }
        .cta-block>* {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
        }

        /* ===== 页脚（沿用首页样式） ===== */
        .site-footer {
            background: var(--clr-dark-2);
            border-top: 1px solid var(--clr-border);
            padding: 56px 0 0;
            margin-top: auto;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
        }
        .site-footer .footer-brand .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-brand p {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 360px;
        }
        .site-footer .search-slot {
            display: flex;
            gap: 0;
            border-radius: 30px;
            overflow: hidden;
            border: 1px solid var(--clr-border);
            background: var(--clr-dark-3);
        }
        .site-footer .search-slot input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 10px 16px;
            color: #fff;
            font-size: 0.9rem;
            outline: none;
        }
        .site-footer .search-slot input::placeholder {
            color: var(--clr-text-muted);
        }
        .site-footer .search-slot button {
            background: var(--clr-primary);
            border: none;
            color: #fff;
            padding: 0 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .site-footer .search-slot button:hover {
            background: var(--clr-primary-dark);
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer ul li a:hover {
            color: var(--clr-accent-light);
            padding-left: 4px;
        }
        .site-footer ul li a i {
            width: 18px;
            color: var(--clr-text-muted);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding: 20px 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            color: var(--clr-text-muted);
            font-size: 0.82rem;
        }
        .site-footer .footer-bottom a {
            color: var(--clr-text-secondary);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--clr-accent-light);
        }

        /* ===== 响应式断点 ===== */
        @media screen and (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hero-event h1 {
                font-size: 2.6rem;
            }
            .section-header h2 {
                font-size: 2rem;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --nav-width: 0px;
                --section-gap: 48px;
            }
            .side-nav {
                display: none;
            }
            .top-nav-mobile {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .hero-event {
                min-height: 400px;
                padding: 60px 20px 50px;
                margin-top: 0;
            }
            .hero-event h1 {
                font-size: 2rem;
            }
            .hero-event .hero-sub {
                font-size: 1rem;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .rule-list {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .timeline {
                padding-left: 28px;
            }
            .timeline::before {
                left: 8px;
            }
            .timeline-item::before {
                left: -20px;
                width: 10px;
                height: 10px;
            }
        }

        @media screen and (max-width: 520px) {
            .hero-event h1 {
                font-size: 1.6rem;
            }
            .hero-event .hero-cta {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
            .card .card-img {
                height: 160px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mt-3 {
            margin-top: 40px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            background: rgba(255, 143, 0, 0.15);
            color: var(--clr-accent-light);
            border: 1px solid rgba(255, 143, 0, 0.2);
        }
        .badge-primary {
            background: rgba(198, 40, 40, 0.15);
            color: var(--clr-primary-light);
            border-color: rgba(198, 40, 40, 0.2);
        }