/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1f3d;
            --primary-light: #1a2f5a;
            --primary-dark: #081220;
            --accent: #d4a843;
            --accent-light: #e8c86a;
            --accent-dark: #b88d2e;
            --bg-deep: #070e1a;
            --bg-card: rgba(17, 34, 64, 0.85);
            --bg-card-hover: rgba(26, 47, 90, 0.9);
            --text-main: #e0e6ed;
            --text-muted: #8892b0;
            --text-light: #f0f4f8;
            --border-color: rgba(212, 168, 67, 0.2);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 40px rgba(212, 168, 67, 0.08);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --nav-width: 240px;
            --nav-collapsed: 0px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-deep);
            min-height: 100vh;
            display: flex;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-light);
            font-weight: 600;
        }

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

        /* ===== 左侧导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--primary);
            border-right: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition);
            overflow-y: auto;
            backdrop-filter: blur(12px);
        }

        .site-nav .nav-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .site-nav .nav-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--bg-deep);
            flex-shrink: 0;
        }

        .site-nav .nav-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .site-nav .nav-brand .brand-text small {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .site-nav .nav-links {
            flex: 1;
            padding: 20px 0;
        }

        .site-nav .nav-links li {
            padding: 0 12px;
            margin-bottom: 2px;
        }

        .site-nav .nav-links a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }

        .site-nav .nav-links a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .site-nav .nav-links a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.05);
        }

        .site-nav .nav-links a.active {
            color: var(--accent);
            background: rgba(212, 168, 67, 0.1);
        }
        .site-nav .nav-links a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 28px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }

        .site-nav .nav-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border-light);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }
        .site-nav .nav-footer span {
            display: block;
            margin-bottom: 4px;
        }

        /* ===== 移动端导航切换 ===== */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--primary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-soft);
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
        }

        .nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(2px);
        }

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

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--bg-deep) 0%, var(--primary) 50%, var(--primary-dark) 100%);
            overflow: hidden;
            padding: 80px 24px 60px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: screen;
            animation: heroParallax 30s ease-in-out infinite alternate;
        }

        @keyframes heroParallax {
            0% {
                transform: scale(1) translate(0, 0);
            }
            100% {
                transform: scale(1.05) translate(-10px, -10px);
            }
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 67, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
        }

        .hero .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 30px;
            background: rgba(212, 168, 67, 0.15);
            border: 1px solid rgba(212, 168, 67, 0.25);
            color: var(--accent);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--text-light) 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .hero .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--bg-deep);
            border-color: var(--accent);
            box-shadow: 0 4px 20px rgba(212, 168, 67, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 168, 67, 0.4);
            color: var(--bg-deep);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(212, 168, 67, 0.08);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 13px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 24px;
        }
        .section-dark {
            background: var(--primary);
        }
        .section-deeper {
            background: var(--bg-deep);
        }
        .section-card-bg {
            background: var(--primary-dark);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
        }

        .section-header .header-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(212, 168, 67, 0.1);
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        /* ===== 分类卡片网格 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }

        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            backdrop-filter: blur(8px);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: rgba(212, 168, 67, 0.2);
            background: var(--bg-card-hover);
        }

        .category-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(212, 168, 67, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .category-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .category-card .card-link {
            color: var(--accent);
            font-weight: 500;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .category-card .card-link:hover i {
            transform: translateX(4px);
        }

        .category-card .card-img {
            margin: -24px -24px 0;
            height: 160px;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-img img {
            transform: scale(1.05);
        }
        .category-card .card-body {
            padding-top: 20px;
        }

        /* ===== 资讯/内容列表 ===== */
        .post-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(212, 168, 67, 0.15);
        }

        .post-card .post-thumb {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .post-card .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .post-card:hover .post-thumb img {
            transform: scale(1.05);
        }
        .post-card .post-thumb .post-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(212, 168, 67, 0.9);
            color: var(--bg-deep);
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .post-card .post-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .post-card .post-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .post-card .post-body h3 a {
            color: var(--text-light);
            transition: color var(--transition);
        }
        .post-card .post-body h3 a:hover {
            color: var(--accent);
        }

        .post-card .post-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .post-card .post-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }
        .post-card .post-meta span i {
            margin-right: 6px;
            font-size: 12px;
        }

        .post-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-light);
        }
        .post-empty i {
            font-size: 48px;
            color: var(--text-muted);
            opacity: 0.3;
            margin-bottom: 16px;
            display: block;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            border-color: rgba(212, 168, 67, 0.2);
            box-shadow: var(--shadow-soft);
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .stat-item .stat-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 12px;
            opacity: 0.6;
        }

        /* ===== 流程/功能 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            border: 1px solid var(--border-light);
            position: relative;
            text-align: center;
            transition: all var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-soft);
            border-color: rgba(212, 168, 67, 0.15);
        }
        .step-card::before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--bg-deep);
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 0 4px var(--bg-deep);
        }

        .step-card .step-icon {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 16px;
            margin-top: 8px;
        }
        .step-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 67, 0.15);
        }

        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-light);
            font-size: 1rem;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item .faq-question i {
            color: var(--accent);
            font-size: 14px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-deep) 100%);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: screen;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }
        .cta-section .cta-content h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            margin-bottom: 16px;
        }
        .cta-section .cta-content p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-light);
            padding: 48px 24px 32px;
        }

        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
        }

        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .footer-brand .footer-logo span {
            color: var(--accent);
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            max-width: 280px;
            line-height: 1.6;
        }

        .footer-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .footer-links h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .footer-links ul li {
            margin-bottom: 6px;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            max-width: var(--max-width);
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式断点 ===== */

        /* 平板及以下 */
        @media (max-width: 1024px) {
            :root {
                --nav-width: 220px;
            }
            .category-grid {
                grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            }
            .post-list {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            }
            .steps-grid {
                grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-nav {
                transform: translateX(-100%);
            }
            .site-nav.open {
                transform: translateX(0);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-overlay.active {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .hero {
                min-height: 60vh;
                padding: 100px 20px 50px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .section {
                padding: 50px 20px;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .post-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .post-card .post-thumb {
                height: 170px;
            }
            .site-nav .nav-brand {
                padding: 20px 16px 16px;
            }
            .site-nav .nav-links {
                padding: 12px 0;
            }
            .site-nav .nav-links li {
                padding: 0 8px;
            }
            .site-nav .nav-links a {
                padding: 10px 14px;
                font-size: 14px;
            }
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 14px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .section {
                padding: 40px 16px;
            }
            .container {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .category-card {
                padding: 20px 18px;
            }
            .post-card .post-body {
                padding: 16px 18px 20px;
            }
            .post-card .post-thumb {
                height: 150px;
            }
            .footer-links {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .site-nav .nav-brand .brand-text {
                font-size: 17px;
            }
            .hero .hero-badge {
                font-size: 11px;
                padding: 4px 14px;
            }
            .step-card {
                padding: 24px 18px 20px;
            }
            .step-card .step-icon {
                font-size: 28px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .faq-item .faq-question {
                padding: 12px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 12px;
                font-size: 0.85rem;
            }
            .cta-section .cta-content h2 {
                font-size: 1.3rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --primary-dark: #0f0f1a;
            --accent: #e2a628;
            --accent-light: #f0c75e;
            --accent-dark: #c9911e;
            --bg-body: #f5f3f0;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section-alt: #f0ede8;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5a;
            --text-muted: #8a8a9a;
            --text-light: #f5f3f0;
            --border-color: #e0ddd8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --font-display: 'Georgia', 'Times New Roman', serif;
            --nav-width: 240px;
            --header-height: 0px;
            --content-max-width: 860px;
            --gap: 24px;
        }

        /* ===== 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-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--accent-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--content-max-width); margin: 0 auto; padding: 0 var(--gap); width: 100%; }

        /* ===== 左侧导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--primary);
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            padding: 0;
            z-index: 1000;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(0,0,0,0.2);
        }
        .site-nav::-webkit-scrollbar { width: 4px; }
        .site-nav::-webkit-scrollbar-track { background: transparent; }
        .site-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }
        .nav-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .brand-text {
            font-family: var(--font-display);
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.2;
        }
        .brand-text small {
            display: block;
            font-size: 0.7rem;
            font-weight: 400;
            opacity: 0.6;
            font-family: var(--font-body);
            letter-spacing: 1px;
        }
        .nav-links {
            flex: 1;
            padding: 16px 0;
        }
        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
            font-weight: 500;
            border-left: 3px solid transparent;
            transition: var(--transition);
        }
        .nav-links li a i { width: 20px; text-align: center; font-size: 1rem; }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255,255,255,0.06);
            border-left-color: var(--accent);
        }
        .nav-links li a.active {
            color: #fff;
            background: rgba(226,166,40,0.12);
            border-left-color: var(--accent);
        }
        .nav-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.75rem;
            opacity: 0.5;
            line-height: 1.6;
            text-align: center;
        }
        .nav-footer span { display: block; }

        /* ===== 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;
            padding: 40px 0 60px;
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            background: var(--primary-dark);
            padding: 60px 0 50px;
            margin-bottom: 40px;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.88) 0%, rgba(22,33,62,0.70) 100%);
            z-index: 1;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            margin-bottom: 20px;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.6); }
        .article-banner .breadcrumb a:hover { color: var(--accent-light); }
        .article-banner .breadcrumb i { font-size: 0.7rem; }
        .article-banner .post-category {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .article-banner h1 {
            color: #fff;
            font-size: 2.4rem;
            max-width: 720px;
            line-height: 1.25;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-banner .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
        }
        .article-banner .meta i { margin-right: 6px; }

        /* ===== 文章正文 ===== */
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px 56px;
            margin-bottom: 40px;
        }
        .article-body .featured-image {
            margin: -48px -56px 32px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            overflow: hidden;
            max-height: 420px;
        }
        .article-body .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body .content p { margin-bottom: 1.4rem; }
        .article-body .content h2, .article-body .content h3 { margin-top: 2rem; margin-bottom: 1rem; color: var(--text-primary); }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.4rem; padding-left: 1.6rem; list-style: disc; }
        .article-body .content li { margin-bottom: 0.4rem; color: var(--text-secondary); }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.6rem 0;
            background: var(--bg-section-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body .content img { margin: 1.6rem 0; border-radius: var(--radius-md); }
        .article-body .content a { color: var(--accent-dark); text-decoration: underline; }
        .article-body .content a:hover { color: var(--accent); }
        .article-body .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .tags .tag {
            display: inline-block;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: 20px;
            transition: var(--transition);
        }
        .article-body .tags .tag:hover { background: var(--accent); color: #fff; }

        /* ===== 文章未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 700;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== CTA 区块 ===== */
        .article-cta {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }
        .article-cta h3 { color: #fff; font-size: 1.6rem; margin-bottom: 12px; }
        .article-cta p { color: rgba(255,255,255,0.7); max-width: 500px; margin: 0 auto 24px; }
        .article-cta .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
        }
        .article-cta .btn-cta:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(226,166,40,0.3); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 40px 32px;
            margin-top: auto;
        }
        .footer-inner {
            max-width: var(--content-max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-family: var(--font-display);
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 340px; }
        .footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        .footer-links h4 { color: rgba(255,255,255,0.9); font-family: var(--font-body); font-size: 0.85rem; font-weight: 600; letter-spacing: 1px; margin-bottom: 14px; text-transform: uppercase; }
        .footer-links ul li { margin-bottom: 8px; }
        .footer-links ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: var(--transition); }
        .footer-links ul li a:hover { color: var(--accent-light); padding-left: 4px; }
        .footer-bottom {
            max-width: var(--content-max-width);
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--accent-light); }

        /* ===== 移动端导航切换 ===== */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            background: var(--primary);
            color: #fff;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .nav-toggle:hover { background: var(--primary-light); }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root { --nav-width: 220px; }
            .article-body { padding: 36px 32px; }
            .article-body .featured-image { margin: -36px -32px 24px; }
            .article-cta { padding: 36px 32px; }
        }

        @media (max-width: 768px) {
            :root { --nav-width: 0px; }
            body { flex-direction: column; }
            .nav-toggle { display: flex; align-items: center; justify-content: center; }
            .nav-overlay.active { display: block; }
            .site-nav {
                transform: translateX(-100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                width: 260px;
            }
            .site-nav.active { transform: translateX(0); }
            .main-wrapper { margin-left: 0; }
            .main-content { padding: 24px 0 40px; }
            .article-banner { padding: 40px 0 36px; margin-bottom: 24px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 20px; border-radius: var(--radius-md); }
            .article-body .featured-image { margin: -24px -20px 20px; border-radius: var(--radius-md) var(--radius-md) 0 0; }
            .article-body .content { font-size: 1rem; }
            .article-cta { padding: 28px 20px; }
            .article-cta h3 { font-size: 1.3rem; }
            .footer-inner { grid-template-columns: 1fr; gap: 32px; }
            .footer-links { grid-template-columns: 1fr 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .site-footer { padding: 36px 20px 24px; }
        }

        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.3rem; }
            .article-banner .meta { gap: 12px; font-size: 0.78rem; }
            .article-body { padding: 16px 14px; }
            .article-body .featured-image { margin: -16px -14px 16px; }
            .article-cta h3 { font-size: 1.1rem; }
            .article-cta .btn-cta { padding: 12px 28px; font-size: 0.9rem; }
            .footer-links { grid-template-columns: 1fr; gap: 20px; }
            .footer-brand .footer-logo { font-size: 1.2rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b0e1a;
            --primary-light: #12162a;
            --secondary: #1a2240;
            --accent: #2a3a6a;
            --gold: #e8c547;
            --gold-dim: #c9a83a;
            --star-white: #e8e8f0;
            --star-dim: rgba(232, 232, 240, 0.7);
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-hover: rgba(255, 255, 255, 0.08);
            --border-color: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(232, 197, 71, 0.3);
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 56px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --nav-width: 240px;
            --header-height: 0px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            background: var(--primary);
            color: var(--star-white);
            min-height: 100vh;
            display: flex;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--star-dim);
            margin-bottom: 1em;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--primary-light);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            padding: 28px 0 20px;
            transition: transform var(--transition);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 20px 24px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 16px;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--gold), #b8942e);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            box-shadow: 0 0 20px rgba(232, 197, 71, 0.2);
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--star-white);
            letter-spacing: 0.02em;
        }
        .brand-text small {
            font-weight: 400;
            font-size: 0.7rem;
            color: var(--gold);
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }
        .nav-links {
            flex: 1;
            padding: 0 12px;
        }
        .nav-links li {
            margin-bottom: 4px;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--star-dim);
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
        }
        .nav-links a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: var(--accent);
            transition: color var(--transition);
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            background: var(--card-bg);
            color: var(--star-white);
        }
        .nav-links a:hover i,
        .nav-links a:focus-visible i {
            color: var(--gold);
        }
        .nav-links a.active {
            background: rgba(232, 197, 71, 0.12);
            color: var(--gold);
            box-shadow: inset 3px 0 0 var(--gold);
        }
        .nav-links a.active i {
            color: var(--gold);
        }
        .nav-footer {
            padding: 20px 20px 0;
            border-top: 1px solid var(--border-color);
            margin-top: 16px;
            font-size: 0.75rem;
            color: rgba(232, 232, 240, 0.4);
            display: flex;
            flex-direction: column;
            gap: 4px;
            text-align: center;
        }
        .nav-footer span i {
            margin-right: 4px;
        }

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

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(11, 14, 26, 0.85), rgba(18, 22, 42, 0.75)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 80px 24px 60px;
            border-bottom: 1px solid var(--border-color);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--primary), transparent);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .hero-content h1 {
            font-weight: 700;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--star-white) 30%, var(--gold) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.1rem;
            color: var(--star-dim);
            max-width: 600px;
            margin: 0 auto 20px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .hero-tags span {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            background: rgba(232, 197, 71, 0.12);
            border: 1px solid rgba(232, 197, 71, 0.2);
            color: var(--gold);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 72px 24px;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
        }
        .section-header .subtitle {
            display: inline-block;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--gold);
            margin-bottom: 8px;
            font-weight: 600;
        }

        /* ===== 指南分类卡片网格 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }
        .guide-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px 24px;
            text-align: center;
            transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .guide-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .guide-card .card-icon {
            font-size: 2.2rem;
            color: var(--gold);
            margin-bottom: 16px;
            display: block;
        }
        .guide-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .guide-card p {
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .guide-card .card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            border: 1px solid var(--border-color);
        }
        .tag-badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(232, 197, 71, 0.15);
            color: var(--gold);
            border: 1px solid rgba(232, 197, 71, 0.15);
        }

        /* ===== 观测技巧 ===== */
        .tips-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .tips-layout .tips-image img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .tips-list li {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: background var(--transition), border-color var(--transition);
        }
        .tips-list li:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
        }
        .tips-list li i {
            font-size: 1.2rem;
            color: var(--gold);
            margin-top: 2px;
            flex-shrink: 0;
        }
        .tips-list li h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }
        .tips-list li p {
            font-size: 0.85rem;
            margin: 0;
        }

        /* ===== 推荐观测地点 ===== */
        .places-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .place-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .place-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-hover);
        }
        .place-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .place-card .place-info {
            padding: 20px 20px 24px;
        }
        .place-card .place-info h3 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .place-card .place-info .place-meta {
            display: flex;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--gold);
            margin-bottom: 8px;
        }
        .place-card .place-info p {
            font-size: 0.88rem;
            margin: 0;
        }

        /* ===== 观测设备推荐 ===== */
        .equip-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        .equip-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .equip-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-3px);
        }
        .equip-card .equip-icon {
            font-size: 2.4rem;
            color: var(--gold);
            margin-bottom: 12px;
        }
        .equip-card h3 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .equip-card .equip-desc {
            font-size: 0.85rem;
            margin-bottom: 12px;
        }
        .equip-card .equip-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 12px;
            font-size: 0.72rem;
            background: rgba(232, 197, 71, 0.12);
            color: var(--gold);
            border: 1px solid rgba(232, 197, 71, 0.15);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--card-hover);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--gold);
            transition: transform var(--transition);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            font-size: 0.9rem;
            color: var(--star-dim);
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(26, 34, 64, 0.9), rgba(11, 14, 26, 0.95)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 72px 24px;
        }
        .cta-section h2 {
            margin-bottom: 12px;
        }
        .cta-section p {
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .btn-primary {
            background: var(--gold);
            color: var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus-visible {
            background: var(--gold-dim);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 197, 71, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--star-white);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .btn-outline:hover,
        .btn-outline:focus-visible {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 197, 71, 0.1);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-light);
            border-top: 1px solid var(--border-color);
            padding: 48px 24px 24px;
        }
        .footer-inner {
            max-width: 1240px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 20px;
        }
        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--star-white);
        }
        .footer-brand .footer-logo span {
            color: var(--gold);
        }
        .footer-brand p {
            font-size: 0.88rem;
            max-width: 400px;
            margin: 0;
        }
        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .footer-links h4 {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--gold);
            margin-bottom: 12px;
        }
        .footer-links ul li {
            margin-bottom: 6px;
        }
        .footer-links ul li a {
            font-size: 0.85rem;
            color: var(--star-dim);
            transition: color var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--gold);
        }
        .footer-bottom {
            max-width: 1240px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.78rem;
            color: rgba(232, 232, 240, 0.4);
        }
        .footer-bottom a {
            color: rgba(232, 232, 240, 0.5);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--gold);
        }

        /* ===== 移动端导航切换 ===== */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            color: var(--star-white);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--card-hover);
        }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 移动端响应式 ===== */
        @media (max-width: 1024px) {
            .tips-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .tips-layout .tips-image {
                order: -1;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-width: 0px;
            }
            .site-nav {
                transform: translateX(-100%);
                width: 280px;
                border-right: none;
                box-shadow: var(--shadow-lg);
            }
            .site-nav.open {
                transform: translateX(0);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-overlay.open {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .category-hero {
                min-height: 260px;
                padding: 60px 20px 40px;
            }
            .section {
                padding: 48px 20px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .guide-grid {
                grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            }
            .places-grid {
                grid-template-columns: 1fr 1fr;
            }
            .equip-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-links {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .places-grid {
                grid-template-columns: 1fr;
            }
            .equip-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .btn {
                padding: 10px 24px;
                font-size: 0.85rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .category-hero {
                min-height: 220px;
                padding: 48px 16px 32px;
            }
            .section {
                padding: 36px 16px;
            }
        }

        /* ===== focus-visible 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        .faq-question:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 工具类 ===== */
        .text-gold {
            color: var(--gold);
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 分隔装饰 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), transparent);
            border-radius: 4px;
            margin: 16px auto 20px;
        }