/* roulang page: index */
:root {
            --ink: #1A1A1A;
            --ink-soft: #2A2A2A;
            --bg: #FAF7F2;
            --bg-alt: #F3EEE7;
            --card-bg: #FFFFFF;
            --accent: #F2552C;
            --accent-dark: #D93F1A;
            --accent-2: #0E7C7B;
            --text-primary: #1A1A1A;
            --text-secondary: #55504A;
            --text-muted: #8A8078;
            --text-on-dark: #F5F1EB;
            --border-light: rgba(0,0,0,0.06);
            --border-soft: #E2DCD4;
            --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.10);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-pill: 999px;
            --container-max: 1180px;
            --nav-height: 64px;
            --transition: all 0.25s ease;
            --font-sans: 'Inter', 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', monospace;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background-color: var(--bg);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 20px;
            }
        }
        /* 浮动 Dock 导航 */
        .dock-nav {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            pointer-events: none;
        }
        .dock-nav-inner {
            pointer-events: auto;
            max-width: 1080px;
            margin: 0 auto;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-pill);
            padding: 8px 12px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        .dock-nav.scrolled .dock-nav-inner {
            background: rgba(255,255,255,0.96);
            box-shadow: 0 8px 30px rgba(0,0,0,0.12);
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--ink);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .logo span {
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            font-weight: 500;
            font-size: 0.95rem;
        }
        .nav-links a {
            position: relative;
            padding: 4px 0;
        }
        .nav-links a.active {
            color: var(--accent);
            font-weight: 700;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            background: var(--ink);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-cta:hover {
            background: var(--accent);
            color: #fff;
        }
        /* 移动端底部 Dock */
        @media (max-width: 640px) {
            .dock-nav {
                top: auto;
                bottom: 0;
                padding: 0 8px 8px;
            }
            .dock-nav-inner {
                border-radius: 24px;
                padding: 6px 10px;
                gap: 8px;
                justify-content: center;
            }
            .logo {
                font-size: 0.95rem;
                letter-spacing: 0;
            }
            .nav-links {
                gap: 16px;
                font-size: 0.85rem;
            }
            .nav-cta {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }
        /* 页脚 */
        .site-footer {
            background: var(--ink);
            color: var(--text-on-dark);
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }
        .footer-brand span {
            color: var(--accent);
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: #B5ADA4;
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #8A8078;
        }
        .footer-bottom strong {
            color: #C5BEB5;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 通用板块样式 */
        section {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            section {
                padding: 48px 0;
            }
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            padding: 6px 14px;
            background: rgba(242,85,44,0.1);
            color: var(--accent);
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--ink);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-top: 12px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }
        /* Hero */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: var(--ink);
            color: #fff;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26,26,26,0.65);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-title {
            font-size: 3.8rem;
            font-weight: 800;
            line-height: 1.08;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
        }
        .hero-title span {
            color: var(--accent);
            display: inline-block;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(245,241,235,0.9);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.8);
        }
        .btn-outline:hover {
            background: #fff;
            color: var(--ink);
            border-color: #fff;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
                padding: 100px 0 60px;
            }
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            .hero-title {
                font-size: 2rem;
            }
        }
        /* 指标看板 */
        .metrics-board {
            background: var(--ink);
            color: #fff;
            padding: 60px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
        }
        .metric-card {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: var(--transition);
        }
        .metric-card:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-4px);
        }
        .metric-number {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent);
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.85rem;
            color: #B5ADA4;
            margin-top: 4px;
        }
        @media (max-width: 640px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-number {
                font-size: 1.8rem;
            }
        }
        /* 服务矩阵 交替布局 */
        .service-matrix {
            background: var(--bg);
        }
        .matrix-row {
            display: flex;
            align-items: center;
            gap: 40px;
            margin-bottom: 48px;
        }
        .matrix-row:last-child {
            margin-bottom: 0;
        }
        .matrix-row.reverse {
            flex-direction: row-reverse;
        }
        .matrix-text {
            flex: 1;
        }
        .matrix-visual {
            flex: 1;
            display: flex;
            justify-content: center;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            padding: 24px;
            min-height: 240px;
            align-items: center;
            border: 1px solid var(--border-light);
        }
        .matrix-visual img {
            max-width: 100%;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
        }
        .matrix-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .matrix-text p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
        }
        .matrix-num {
            display: inline-block;
            font-family: var(--font-mono);
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 8px;
        }
        @media (max-width: 768px) {
            .matrix-row, .matrix-row.reverse {
                flex-direction: column;
                gap: 20px;
            }
            .matrix-visual {
                width: 100%;
            }
        }
        /* 分类专题入口 */
        .category-entries {
            background: var(--bg-alt);
        }
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }
        .cat-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: block;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .cat-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .cat-card-body {
            padding: 16px;
        }
        .cat-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }
        .cat-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 640px) {
            .cat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cat-card img {
                height: 120px;
            }
        }
        @media (max-width: 400px) {
            .cat-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 结果对比 */
        .compare-section {
            background: var(--bg);
        }
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .compare-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .compare-card.highlight {
            border-color: var(--accent);
            border-width: 2px;
            box-shadow: 0 12px 30px rgba(242,85,44,0.1);
        }
        .compare-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .compare-item {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-soft);
            font-size: 0.95rem;
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-item span:last-child {
            font-weight: 600;
            color: var(--ink);
        }
        @media (max-width: 480px) {
            .compare-card {
                padding: 20px;
            }
        }
        /* 时间线 */
        .timeline-section {
            background: var(--bg-alt);
        }
        .timeline {
            position: relative;
            max-width: 720px;
            margin: 0 auto;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-soft);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 32px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(242,85,44,0.2);
        }
        .timeline-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .timeline-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        /* 更新资讯列表 */
        .updates-section {
            background: var(--bg);
        }
        .update-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .update-item {
            display: flex;
            gap: 16px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .update-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .update-item img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .update-info h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .update-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(14,124,123,0.15);
            color: var(--accent-2);
            white-space: nowrap;
        }
        .badge.accent {
            background: rgba(242,85,44,0.15);
            color: var(--accent);
        }
        @media (max-width: 480px) {
            .update-item {
                flex-direction: column;
            }
            .update-item img {
                width: 100%;
                height: 150px;
            }
        }
        /* 专题/场景推荐 */
        .topics-section {
            background: var(--bg-alt);
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        .topic-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .topic-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .topic-card-body {
            padding: 16px;
        }
        .topic-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
        }
        .topic-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 640px) {
            .topic-grid {
                grid-template-columns: 1fr 1fr;
            }
            .topic-card img {
                height: 120px;
            }
        }
        @media (max-width: 400px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 平台保障 */
        .guarantee-section {
            background: var(--bg);
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }
        .guarantee-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .guarantee-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .guarantee-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            color: var(--accent);
        }
        .guarantee-item h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .guarantee-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        /* 快速解答 */
        .quick-answers {
            background: var(--bg-alt);
        }
        .qa-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        .qa-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .qa-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .qa-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        /* FAQ */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            background: none;
            cursor: pointer;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--ink);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            font-size: 1.5rem;
            line-height: 1;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: var(--bg-alt);
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            border-top-color: var(--border-soft);
        }
        .faq-answer-inner {
            padding: 18px 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        /* 热门关键词 */
        .keywords-section {
            background: var(--bg-alt);
            padding: 60px 0;
        }
        .keywords-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .keyword-pill {
            display: inline-block;
            padding: 8px 18px;
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .keyword-pill:hover {
            background: var(--ink);
            color: #fff;
            border-color: var(--ink);
        }
        /* 转化表单 */
        .subscribe-section {
            background: var(--bg);
            padding: 80px 0;
        }
        .subscribe-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 32px;
        }
        .subscribe-text {
            flex: 1;
            min-width: 250px;
        }
        .subscribe-text h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .subscribe-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .subscribe-form {
            flex: 1;
            min-width: 300px;
            display: flex;
            gap: 12px;
        }
        .subscribe-form input {
            flex: 1;
            height: 48px;
            border-radius: 12px;
            border: 1px solid var(--border-soft);
            padding: 0 16px;
            font-size: 0.95rem;
            background: var(--bg-alt);
            transition: var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(242,85,44,0.1);
            background: #fff;
        }
        .subscribe-form button {
            height: 48px;
            padding: 0 24px;
            background: var(--accent);
            color: #fff;
            border-radius: 12px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            background: var(--accent-dark);
        }
        .form-note {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .subscribe-card {
                padding: 32px 24px;
                flex-direction: column;
                align-items: stretch;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form button {
                width: 100%;
            }
        }
        /* 滚入动画 */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
            .metric-number {
                transition: none;
            }
            .faq-answer {
                transition: none;
            }
        }

/* roulang page: category1 */
:root {
    --ink: #1A1A1A;
    --ink-soft: #2A2A2A;
    --bg: #FAF7F2;
    --bg-alt: #F3EEE7;
    --card-bg: #FFFFFF;
    --accent: #F2552C;
    --accent-dark: #D93F1A;
    --accent-2: #0E7C7B;
    --text-primary: #1A1A1A;
    --text-secondary: #55504A;
    --text-muted: #8A8078;
    --text-on-dark: #F5F1EB;
    --border-light: rgba(0,0,0,0.06);
    --border-soft: #E2DCD4;
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
    --shadow-lg: 0 16px 40px rgba(0,0,0,0.10);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-pill: 999px;
    --container-max: 1180px;
    --nav-height: 64px;
    --transition: all 0.25s ease;
    --font-sans: 'Inter', 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    --font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', monospace;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--accent);
}
button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    outline: none;
    border: none;
    background: none;
}
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 28px;
}
/* 浮动 Dock 导航 */
.dock-nav {
    position: fixed;
    top: 16px;
    left: 0;
    right: 0;
    z-index: 1000;
    pointer-events: none;
}
.dock-nav-inner {
    pointer-events: auto;
    max-width: 1080px;
    margin: 0 auto;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-pill);
    padding: 8px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid rgba(255,255,255,0.6);
    transition: var(--transition);
}
.dock-nav.scrolled .dock-nav-inner {
    background: rgba(255,255,255,0.96);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}
.logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--ink);
    white-space: nowrap;
    letter-spacing: -0.01em;
}
.logo span {
    color: var(--accent);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    font-weight: 500;
    font-size: 0.95rem;
}
.nav-links a {
    position: relative;
    padding: 4px 0;
}
.nav-links a.active {
    color: var(--accent);
    font-weight: 700;
}
.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}
.nav-cta {
    background: var(--ink);
    color: #fff;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: var(--transition);
}
.nav-cta:hover {
    background: var(--accent);
    color: #fff;
}
/* 面包屑与分类标题 */
.category-hero {
    padding: 110px 0 36px;
    background: var(--bg);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--text-secondary);
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb .sep {
    color: var(--border-soft);
}
.category-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--ink);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.category-hero .subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 720px;
    line-height: 1.75;
}
/* 筛选工具条 */
.filter-bar {
    padding: 16px 0 32px;
    background: var(--bg);
}
.filter-bar-inner {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}
.filter-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    padding-right: 6px;
    white-space: nowrap;
}
.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-alt);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.filter-pill:hover {
    border-color: var(--border-soft);
    color: var(--ink);
}
.filter-pill.active {
    background: var(--ink);
    color: #fff;
    font-weight: 600;
}
.filter-pill .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-2);
}
.filter-pill.active .dot {
    background: var(--accent);
}
/* 分类卡片网格 */
.card-grid-section {
    padding: 8px 0 64px;
    background: var(--bg);
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.content-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.content-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}
.content-card .card-img {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-alt);
}
.content-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.content-card:hover .card-img img {
    transform: scale(1.04);
}
.card-badges {
    position: absolute;
    top: 10px;
    left: 10px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.badge-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.badge-tag.region {
    background: rgba(26,26,26,0.82);
    color: #fff;
}
.badge-tag.sub-status {
    background: rgba(14,124,123,0.9);
    color: #fff;
}
.badge-tag.update {
    background: rgba(242,85,44,0.92);
    color: #fff;
}
.card-body {
    padding: 16px 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}
.card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.9em;
}
.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: auto;
}
.card-meta .time {
    display: flex;
    align-items: center;
    gap: 4px;
}
.card-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.load-more-wrap {
    text-align: center;
    margin-top: 36px;
}
.load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    border-radius: var(--radius-pill);
    background: var(--card-bg);
    border: 1.5px solid var(--ink);
    color: var(--ink);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}
.load-more-btn:hover {
    background: var(--ink);
    color: #fff;
    border-color: var(--ink);
}
/* 更新日历 */
.calendar-section {
    padding: 64px 0;
    background: var(--bg-alt);
}
.section-heading {
    margin-bottom: 36px;
}
.section-heading h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}
.section-heading .section-sub {
    font-size: 0.95rem;
    color: var(--text-secondary);
}
.timeline-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
.tl-node {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.tl-node:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.tl-date {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent);
    background: rgba(242,85,44,0.08);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    margin-bottom: 10px;
}
.tl-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
}
.tl-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}
/* 高分热度榜 */
.rank-section {
    padding: 64px 0;
    background: var(--bg);
}
.rank-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 40px;
}
.rank-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    border: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
}
.rank-item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}
.rank-num {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent);
    font-family: var(--font-mono);
    min-width: 44px;
    text-align: center;
    line-height: 1;
}
.rank-item:nth-child(1) .rank-num,
.rank-item:nth-child(2) .rank-num,
.rank-item:nth-child(3) .rank-num {
    color: var(--accent);
    font-size: 1.9rem;
}
.rank-item:nth-child(n+4) .rank-num {
    color: var(--text-muted);
    font-size: 1.2rem;
}
.rank-info {
    flex: 1;
}
.rank-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 2px;
}
.rank-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
}
/* 相关专题 */
.topic-section {
    padding: 64px 0;
    background: var(--bg-alt);
}
.topic-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.topic-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
}
.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}
.topic-card .topic-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-alt);
}
.topic-card .topic-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.topic-card:hover .topic-img img {
    transform: scale(1.04);
}
.topic-body {
    padding: 14px 16px 16px;
}
.topic-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 4px;
}
.topic-count {
    font-size: 0.78rem;
    color: var(--text-muted);
}
/* 快速答疑 */
.faq-brief-section {
    padding: 64px 0;
    background: var(--bg);
}
.faq-brief-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 36px;
}
.faq-brief-item {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}
.faq-brief-item:hover {
    border-color: var(--accent-2);
    box-shadow: var(--shadow-md);
}
.faq-brief-q {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}
.faq-brief-q .q-icon {
    color: var(--accent);
    font-weight: 800;
    flex-shrink: 0;
}
.faq-brief-a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
    padding-left: 24px;
}
/* 订阅表单 */
.subscribe-section {
    padding: 64px 0 80px;
    background: var(--bg);
}
.subscribe-card {
    background: var(--ink);
    border-radius: var(--radius-lg);
    padding: 40px 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}
.subscribe-left h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 6px;
}
.subscribe-left p {
    font-size: 0.88rem;
    color: #B5ADA4;
}
.subscribe-form {
    display: flex;
    gap: 10px;
    flex: 1;
    max-width: 460px;
    min-width: 280px;
}
.subscribe-form input {
    flex: 1;
    height: 46px;
    border-radius: 12px;
    padding: 0 16px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
    font-size: 0.9rem;
    transition: var(--transition);
}
.subscribe-form input::placeholder {
    color: #8A8078;
}
.subscribe-form input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(242,85,44,0.25);
}
.subscribe-form button {
    height: 46px;
    padding: 0 28px;
    border-radius: 12px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.subscribe-form button:hover {
    background: var(--accent-dark);
}
/* 页脚 */
.site-footer {
    background: var(--ink);
    color: var(--text-on-dark);
    padding: 60px 0 30px;
    margin-top: 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: #fff;
}
.footer-brand span {
    color: var(--accent);
}
.footer-desc {
    font-size: 0.9rem;
    color: #B5ADA4;
    line-height: 1.7;
    max-width: 320px;
}
.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #fff;
}
.footer-col a {
    display: block;
    font-size: 0.9rem;
    color: #B5ADA4;
    margin-bottom: 10px;
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--accent);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    font-size: 0.8rem;
    color: #8A8078;
    text-align: center;
}
/* 滚动动画 */
.fade-up {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    .fade-up {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .content-card:hover .card-img img,
    .topic-card:hover .topic-img img {
        transform: none;
    }
    .dock-nav,
    .content-card,
    .topic-card,
    .rank-item,
    .faq-brief-item,
    .tl-node {
        transition: none;
    }
}
/* 响应式断点 */
@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .topic-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .timeline-row {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .dock-nav {
        top: auto;
        bottom: 0;
        padding: 0 8px 8px;
    }
    .dock-nav-inner {
        border-radius: 24px;
        padding: 6px 10px;
        gap: 8px;
        justify-content: center;
    }
    .logo {
        font-size: 0.95rem;
        letter-spacing: 0;
    }
    .nav-links {
        gap: 16px;
        font-size: 0.85rem;
    }
    .nav-cta {
        padding: 6px 14px;
        font-size: 0.8rem;
    }
    body {
        padding-bottom: 70px;
    }
    .category-hero {
        padding: 90px 0 24px;
    }
    .category-hero h1 {
        font-size: 1.8rem;
    }
    .category-hero .subtitle {
        font-size: 0.95rem;
    }
    .filter-bar-inner {
        padding: 10px 14px;
        gap: 8px;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .filter-bar-inner::-webkit-scrollbar {
        display: none;
    }
    .filter-pill {
        padding: 6px 14px;
        font-size: 0.8rem;
        flex-shrink: 0;
    }
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .card-body {
        padding: 12px 12px 14px;
    }
    .card-title {
        font-size: 0.88rem;
        min-height: 2.6em;
    }
    .card-meta {
        font-size: 0.72rem;
        flex-wrap: wrap;
        gap: 4px;
    }
    .timeline-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .tl-node {
        padding: 14px 12px;
    }
    .rank-list {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .faq-brief-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .subscribe-card {
        padding: 28px 22px;
        flex-direction: column;
        align-items: flex-start;
    }
    .subscribe-form {
        max-width: 100%;
        width: 100%;
        flex-direction: column;
    }
    .subscribe-form button {
        width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .section-heading h2 {
        font-size: 1.4rem;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .category-hero h1 {
        font-size: 1.5rem;
    }
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .card-title {
        font-size: 0.82rem;
    }
    .card-desc {
        display: none;
    }
    .badge-tag {
        font-size: 0.65rem;
        padding: 3px 7px;
    }
    .timeline-row {
        grid-template-columns: 1fr;
    }
    .topic-grid {
        grid-template-columns: 1fr;
    }
    .rank-num {
        font-size: 1.3rem;
        min-width: 34px;
    }
    .rank-item:nth-child(1) .rank-num,
    .rank-item:nth-child(2) .rank-num,
    .rank-item:nth-child(3) .rank-num {
        font-size: 1.5rem;
    }
}