:root {
            --blue-50: #f0f7ff;
            --blue-100: #e0f0fe;
            --blue-200: #b9dffc;
            --blue-300: #7cc4fb;
            --blue-400: #4aa9f8;
            --blue-500: #1e8ef0;
            --blue-600: #1672d1;
            --blue-700: #1259aa;
            --blue-800: #0e4282;
            --blue-900: #0a2e5c;
            --accent: #ff7b3d;
            --accent-light: #ffb088;
            --text: #2c3e50;
            --text-light: #5a6d7e;
            --text-muted: #8b9aab;
            --bg: #f5f9fc;
            --white: #ffffff;
            --border: #e0edf6;
            --shadow: 0 2px 12px rgba(30, 142, 240, 0.06);
            --shadow-hover: 0 6px 24px rgba(30, 142, 240, 0.12);
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: 0.25s ease;
            --max-width: 1160px;
            --header-height: 62px;
        }

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

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

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.02em;
            -webkit-font-smoothing: antialiased;
        }
        .featured-img img,.a-thumb img,.rec-icon img{width:100%}

        h1,
        h2,
        h3,
        h4 {
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.03em;
        }

        h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        h2 {
            font-size: clamp(1.1rem, 2.2vw, 1.3rem);
        }

        h3 {
            font-size: 0.95rem;
        }

        a {
            color: var(--blue-600);
            text-decoration: none;
            transition: all var(--transition);
        }

        a:hover {
            color: var(--blue-800);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--blue-700);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--blue-400), var(--blue-600));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--blue-50);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 6px 14px;
            gap: 6px;
            transition: all var(--transition);
            max-width: 280px;
            width: 100%;
            margin: 0 16px;
        }

        .header-search:focus-within {
            border-color: var(--blue-300);
            background: var(--white);
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            flex: 1;
            font-size: 0.84rem;
            font-family: inherit;
            color: var(--text);
        }

        .header-search button {
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            color: var(--blue-500);
        }

        .main-nav {
            display: flex;
            gap: 2px;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.82rem;
            color: var(--text-light);
            white-space: nowrap;
            border: 1px solid transparent;
            transition: all var(--transition);
            font-weight: 500;
        }

        .main-nav a:hover,
        .main-nav a.active {
            background: var(--blue-50);
            color: var(--blue-600);
            border-color: var(--blue-200);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            color: var(--text);
            font-size: 1.1rem;
        }

        /* Hero */
        .hero {
            background: linear-gradient(150deg, #e3f2fd 0%, #d1e9fa 40%, #c5e3f8 80%, #e8f4fc 100%);
            padding: 48px 0 40px;
            text-align: center;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(90, 163, 214, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero .container {
            max-width: 680px;
            position: relative;
            z-index: 1;
        }

        .hero .hero-badge {
            display: inline-block;
            font-size: 0.7rem;
            letter-spacing: 0.1em;
            color: var(--blue-500);
            margin-bottom: 8px;
            padding: 4px 14px;
            border: 1px solid var(--blue-300);
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.6);
            font-weight: 500;
            text-transform: uppercase;
        }

        .hero h1 {
            margin-bottom: 8px;
            color: var(--blue-900);
        }

        .hero h1 .hl {
            color: var(--accent);
        }

        .hero .hero-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .hero-search {
            display: flex;
            max-width: 460px;
            margin: 0 auto 14px;
            background: var(--white);
            border: 2px solid var(--blue-200);
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 2px 14px rgba(30, 142, 240, 0.08);
            transition: all var(--transition);
        }
.hero-search form{
    display: flex;
        width: 100%;
}
        .hero-search:focus-within {
            border-color: var(--blue-400);
            box-shadow: 0 4px 20px rgba(30, 142, 240, 0.15);
        }

        .hero-search input {
            flex: 1;
            border: none;
            padding: 13px 18px;
            font-size: 0.9rem;
            outline: none;
            font-family: inherit;
        }

        .hero-search button {
            background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
            color: #fff;
            border: none;
            padding: 0 26px;
            font-weight: 600;
            cursor: pointer;
            font-family: inherit;
            font-size: 0.88rem;
            letter-spacing: 0.03em;
            transition: background var(--transition);
        }

        .hero-search button:hover {
            background: linear-gradient(135deg, var(--blue-600), var(--blue-800));
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 28px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            margin-top: 10px;
        }

        .hero-stats .stat-num {
            font-weight: 700;
            color: var(--blue-600);
            font-size: 1.05rem;
        }

        /* 主体布局 */
        .main-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 22px;
            padding: 24px 0;
        }

        .content-area {
            min-width: 0;
        }

        .sidebar-area {
            min-width: 0;
        }

        .section-title {
            display: flex;
            align-items: baseline;
            gap: 10px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--blue-100);
        }

        .section-title h2 {
            font-weight: 700;
            color: var(--blue-800);
        }

        .section-title .more {
            font-size: 0.78rem;
            color: var(--blue-500);
            margin-left: auto;
            transition: color var(--transition);
        }

        .section-title .more:hover {
            color: var(--blue-700);
        }

        .featured-article {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 18px;
            display: flex;
            transition: all var(--transition);
            cursor: pointer;
        }

        .featured-article:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--blue-300);
        }

        .featured-article .featured-img {
            width: 280px;
            min-height: 200px;
            background: linear-gradient(135deg, var(--blue-100), var(--blue-200));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            flex-shrink: 0;
        }

        .featured-article .featured-content {
            padding: 22px 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-article .featured-badge {
            display: inline-block;
            font-size: 0.66rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            padding: 3px 10px;
            border-radius: 10px;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .featured-article h3 {
            font-size: 1.2rem;
            margin-bottom: 6px;
            color: var(--text);
            transition: color var(--transition);
        }

        .featured-article:hover h3 {
            color: var(--blue-600);
        }

        .featured-article p {
            font-size: 0.84rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .featured-article .featured-meta {
            font-size: 0.72rem;
            color: var(--text-muted);
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .featured-article .featured-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 1px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--white);
            box-shadow: var(--shadow);
            margin-bottom: 18px;
        }

        .article-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 20px;
            transition: all var(--transition);
            cursor: pointer;
            border-bottom: 1px solid var(--blue-50);
        }

        .article-item:last-child {
            border-bottom: none;
        }

        .article-item:hover {
            background: var(--blue-50);
        }

        .article-item .a-thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--blue-100), var(--blue-200));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            flex-shrink: 0;
        }

        .article-item .a-content {
            flex: 1;
            min-width: 0;
        }

        .a-content .a-title {
            font-size: 0.94rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 3px;
            line-height: 1.4;
            transition: color var(--transition);
        }

        .article-item:hover .a-title {
            color: var(--blue-600);
        }

        .a-content .a-excerpt {
            font-size: 0.78rem;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 4px;
        }

        .a-meta {
            display: flex;
            gap: 10px;
            font-size: 0.7rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .a-meta .a-category {
            padding: 1px 7px;
            background: var(--blue-100);
            color: var(--blue-600);
            border-radius: 8px;
            font-size: 0.66rem;
            font-weight: 500;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 10px;
            margin-bottom: 18px;
            list-style: none;
        }

        .category-grid li {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
            overflow: hidden;
        }

        .category-grid li:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--blue-300);
            transform: translateY(-2px);
        }

        .category-grid a {
            display: block;
            padding: 16px 10px;
            color: var(--text);
            text-decoration: none;
        }

        .category-grid a:hover {
            color: var(--text);
        }

        .cat-icon {
            font-size: 1.6rem;
            margin-bottom: 5px;
            display: block;
        }

        .cat-name {
            font-weight: 600;
            font-size: 0.8rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .cat-count {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 16px;
        }

        .sidebar-card h3 {
            font-size: 0.88rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--blue-800);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .sidebar-card h3::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 16px;
            background: var(--blue-500);
            border-radius: 2px;
        }

        .hot-list {
            list-style: none;
        }

        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            border-bottom: 1px solid var(--blue-50);
            cursor: pointer;
            transition: all var(--transition);
        }

        .hot-list-item:last-child {
            border-bottom: none;
        }

        .hot-list-item .rank {
            width: 20px;
            font-weight: 700;
            font-size: 0.82rem;
            color: var(--accent);
        }

        .hot-list-item .title {
            flex: 1;
            font-size: 0.8rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: var(--text);
            transition: color var(--transition);
        }

        .hot-list-item:hover .title {
            color: var(--blue-600);
        }

        .hot-list-item .count {
            font-size: 0.68rem;
            color: var(--text-muted);
        }

        .tag-mini-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
        }

        .tag-mini-cloud li a {
            display: block;
            padding: 4px 10px;
            background: var(--blue-50);
            border: 1px solid var(--border);
            border-radius: 12px;
            font-size: 0.72rem;
            color: var(--text-light);
            transition: all var(--transition);
        }

        .tag-mini-cloud li a:hover {
            background: var(--blue-100);
            border-color: var(--blue-300);
            color: var(--blue-600);
        }

        .recommend-list {
            list-style: none;
        }

        .recommend-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--blue-50);
            align-items: flex-start;
        }

        .recommend-item:last-child {
            border-bottom: none;
        }

        .recommend-item .rec-icon {
            font-size: 1.5rem;
            width: 36px;
            text-align: center;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .recommend-item a {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--text);
            line-height: 1.3;
            transition: color var(--transition);
        }

        .recommend-item a:hover {
            color: var(--blue-600);
        }

        .recommend-item p {
            font-size: 0.74rem;
            color: var(--text-muted);
            margin-top: 2px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .friend-links-section {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            margin-top: 8px;
        }

        .friend-links-title {
            text-align: center;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 14px;
            letter-spacing: 0.06em;
        }

        .friend-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            gap: 10px;
            justify-items: center;
            list-style: none;
        }

        .friend-link-card {
            width: 100%;
        }

        .friend-link-card a {
            display: block;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            text-align: center;
            transition: all var(--transition);
            color: var(--text-light);
            font-size: 0.82rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
        }

        .friend-link-card a:hover {
            border-color: var(--blue-300);
            color: var(--blue-600);
            background: var(--blue-50);
            box-shadow: var(--shadow-hover);
            transform: translateY(-1px);
        }

        .site-footer {
            background: var(--blue-900);
            color: #b0c8e0;
            text-align: center;
            padding: 26px 20px 20px;
            margin-top: auto;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: #a0c0e0;
            font-size: 0.76rem;
            transition: color var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        .site-footer p {
            font-size: 0.68rem;
            color: #7a9ec0;
            margin: 4px 0;
        }

        .site-footer .footer-brand {
            font-weight: 700;
            font-size: 1rem;
            color: #e0ecf8;
            margin-bottom: 4px;
        }

        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 20px;
            width: 36px;
            height: 36px;
            background: var(--blue-500);
            color: #fff;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1rem;
            z-index: 90;
            box-shadow: 0 3px 12px rgba(30, 142, 240, 0.3);
            transition: all var(--transition);
        }

        .back-to-top:hover {
            background: var(--blue-700);
            transform: translateY(-2px);
        }








/*列表*/
  /* ========== 面包屑导航 ========== */
        .breadcrumb-wrap {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--blue-600);
        }

        .breadcrumb .sep {
            color: var(--border);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 550;
        }

        /* ========== 页面标题区 ========== */
        .page-header {
            background: var(--white);
            padding: 20px 0 14px;
            border-bottom: 1px solid var(--border);
        }

        .page-header h1 {
            color: var(--blue-900);
            margin-bottom: 4px;
        }

        .page-header .page-desc {
            font-size: 0.84rem;
            color: var(--text-muted);
        }

        /* ========== 主体布局 ========== */
        .main-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 22px;
            padding: 22px 0;
        }

        .content-area {
            min-width: 0;
        }

        .sidebar-area {
            min-width: 0;
        }

        /* ========== 筛选栏 ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 16px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            flex-wrap: wrap;
            box-shadow: var(--shadow);
        }

        .filter-bar .filter-label {
            font-weight: 600;
            font-size: 0.82rem;
            color: var(--text);
            white-space: nowrap;
        }

        .filter-bar a {
            padding: 5px 12px;
            border-radius: 16px;
            font-size: 0.78rem;
            color: var(--text-light);
            background: var(--blue-50);
            border: 1px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-bar a:hover,
        .filter-bar a.active {
            background: var(--blue-500);
            color: #fff;
            border-color: var(--blue-500);
        }

        .filter-bar .filter-sort {
            margin-left: auto;
            display: flex;
            gap: 4px;
            align-items: center;
        }

        .filter-bar .filter-sort select {
            padding: 5px 10px;
            border: 1px solid var(--border);
            border-radius: var(--radius-xs);
            font-size: 0.8rem;
            font-family: inherit;
            color: var(--text);
            background: var(--white);
            outline: none;
        }

        /* ========== 文章列表 ========== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 1px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--white);
            box-shadow: var(--shadow);
        }

        .article-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 20px;
            transition: all var(--transition);
            cursor: pointer;
            border-bottom: 1px solid var(--blue-50);
        }

        .article-item:last-child {
            border-bottom: none;
        }

        .article-item:hover {
            background: var(--blue-50);
        }

        .article-item .a-thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--blue-100), var(--blue-200));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            flex-shrink: 0;
            overflow: hidden;
        }

        .article-item .a-content {
            flex: 1;
            min-width: 0;
        }

        .a-content .a-title {
            font-size: 0.94rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.4;
            transition: color var(--transition);
        }

        .article-item:hover .a-title {
            color: var(--blue-600);
        }

        .a-content .a-excerpt {
            font-size: 0.8rem;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .a-meta {
            display: flex;
            gap: 12px;
            font-size: 0.72rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            align-items: center;
        }

        .a-meta span {
            display: inline-flex;
            align-items: center;
            gap: 3px;
        }

        .a-meta .a-category {
            padding: 2px 8px;
            background: var(--blue-100);
            color: var(--blue-600);
            border-radius: 10px;
            font-weight: 500;
            font-size: 0.68rem;
        }

        .a-tags {
            display: flex;
            gap: 5px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .a-tags>a {
            padding: 2px 8px;
            background: var(--blue-50);
            color: var(--text-muted);
            border-radius: 10px;
            font-size: 0.68rem;
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .a-tags>a:hover {
            background: var(--blue-100);
            color: var(--blue-600);
            border-color: var(--blue-300);
        }

        /* ========== 分页 ========== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 4px;
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 34px;
            padding: 0 8px;
            border-radius: var(--radius-sm);
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-light);
            background: var(--white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .pagination a:hover {
            background: var(--blue-50);
            border-color: var(--blue-300);
            color: var(--blue-600);
        }

        .pagination span.active {
            background: var(--blue-500);
            color: #fff;
            border-color: var(--blue-500);
            font-weight: 700;
        }

        .pagination span.disabled {
            color: var(--border);
            cursor: not-allowed;
            pointer-events: none;
        }

        /* ========== 侧边栏 ========== */
        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 16px;
        }

        .sidebar-card h3 {
            font-size: 0.88rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--blue-800);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .sidebar-card h3::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 16px;
            background: var(--blue-500);
            border-radius: 2px;
        }

        .category-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 10px;
            border-radius: var(--radius-xs);
            font-size: 0.8rem;
            color: var(--text-light);
            transition: all var(--transition);
            border-bottom: 1px solid var(--blue-50);
        }

        .category-list a:last-child {
            border-bottom: none;
        }

        .category-list a:hover {
            background: var(--blue-50);
            color: var(--blue-600);
        }

        .category-list a .count {
            font-size: 0.7rem;
            color: var(--text-muted);
            background: var(--blue-50);
            padding: 2px 8px;
            border-radius: 10px;
        }

        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            border-bottom: 1px solid var(--blue-50);
            cursor: pointer;
            transition: all var(--transition);
        }

        .hot-list-item:last-child {
            border-bottom: none;
        }

        .hot-list-item .rank {
            width: 20px;
            font-weight: 700;
            font-size: 0.82rem;
            color: var(--accent);
        }

        .hot-list-item .title {
            flex: 1;
            font-size: 0.8rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: var(--text);
            transition: color var(--transition);
        }

        .hot-list-item:hover .title {
            color: var(--blue-600);
        }

        .hot-list-item .count {
            font-size: 0.68rem;
            color: var(--text-muted);
        }

        .tag-mini-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .tag-mini-cloud a {
            padding: 4px 10px;
            background: var(--blue-50);
            border: 1px solid var(--border);
            border-radius: 12px;
            font-size: 0.72rem;
            color: var(--text-light);
            transition: all var(--transition);
        }

        .tag-mini-cloud a:hover {
            background: var(--blue-100);
            border-color: var(--blue-300);
            color: var(--blue-600);
        }

        /* ========== Footer（公共） ========== */
        .site-footer {
            background: var(--blue-900);
            color: #b0c8e0;
            text-align: center;
            padding: 26px 20px 20px;
            margin-top: auto;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: #a0c0e0;
            font-size: 0.76rem;
            transition: color var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        .site-footer p {
            font-size: 0.68rem;
            color: #7a9ec0;
            margin: 4px 0;
        }

        .site-footer .footer-brand {
            font-weight: 700;
            font-size: 1rem;
            color: #e0ecf8;
            margin-bottom: 4px;
        }

        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 20px;
            width: 36px;
            height: 36px;
            background: var(--blue-500);
            color: #fff;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1rem;
            z-index: 90;
            box-shadow: 0 3px 12px rgba(30, 142, 240, 0.3);
            transition: all var(--transition);
        }

        .back-to-top:hover {
            background: var(--blue-700);
            transform: translateY(-2px);
        }



        /* ========== 标签分组 ========== */
        .tag-group {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 18px 12px;
            margin-bottom: 16px;
            box-shadow: var(--shadow);
        }
        .tag-group .group-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }
        .tag-group .group-header .group-icon {
            font-size: 1.2rem;
        }
        .tag-group .group-header h2 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--blue-800);
        }
        .tag-group .group-header .count {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-left: auto;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 14px;
            background: var(--blue-50);
            border: 1px solid var(--border);
            border-radius: 18px;
            font-size: 0.8rem;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--blue-100);
            border-color: var(--blue-300);
            color: var(--blue-600);
            transform: translateY(-1px);
            box-shadow: 0 2px 8px rgba(30, 142, 240, 0.08);
        }
/* ========== 栏目区块 ========== */
        .columns-section {
            padding: 24px 0;
        }
        
        .column-block {
            margin-bottom: 24px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow);
            margin-top: 12px;
        }
        .column-block-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 18px;
            background: var(--blue-50);
            border-bottom: 1px solid var(--border);
        }
        .column-block-header h2 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--blue-800);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .column-block-header .col-more {
            font-size: 0.78rem;
            color: var(--blue-500);
            transition: color var(--transition);
        }
        .column-block-header .col-more:hover {
            color: var(--blue-700);
        }
        .column-article-list {
            padding: 8px 0;
        }
        .col-article-item {
            display: flex;
            align-items: baseline;
            padding: 10px 18px;
            transition: all var(--transition);
            border-bottom: 1px solid var(--blue-50);
            cursor: pointer;
        }
        .col-article-item:last-child {
            border-bottom: none;
        }
        .col-article-item:hover {
            background: var(--blue-50);
        }
        .col-article-item .col-a-title {
            flex: 1;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text);
            margin-right: 12px;
            transition: color var(--transition);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .col-article-item:hover .col-a-title {
            color: var(--blue-600);
        }
        .col-article-item .col-a-meta {
            font-size: 0.7rem;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
 /* ========== 封面标题区 ========== */
        .cover-header {
            background: linear-gradient(160deg, #e8f2fa 0%, #d4e6f6 50%, #e0edf7 100%);
            padding: 36px 0 20px;
            text-align: center;
            border-bottom: 1px solid var(--border);
        }
        .cover-header h1 {
            color: var(--blue-900);
            margin-bottom: 6px;
        }
        .cover-header .cover-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto 16px;
        }
        /* 栏目导航标签 */
        .column-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin-top: 8px;
        }
        .column-nav a {
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--border);
            border-radius: 18px;
            font-size: 0.8rem;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .column-nav a:hover {
            background: var(--white);
            border-color: var(--blue-300);
            color: var(--blue-600);
        }

 /* ========== 内容区 ========== */
        .sitemap-section {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            margin-bottom: 22px;
            box-shadow: var(--shadow);
        }
        .sitemap-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .sitemap-grid-wide {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
            gap: 20px;
        }
        .link-group ul {
            margin-top: 4px;
        }
        .link-group li {
            display: flex;
            align-items: baseline;
            gap: 8px;
            flex-wrap: wrap;
        }
        .link-group li a {
            flex: 1;
            min-width: 0;
        }
        .article-date {
            font-size: 0.72rem;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.03em;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 8px;
        }
        .tag-cloud a {
            padding: 5px 14px;
            background: var(--blue-50);
            border: 1px solid var(--border);
            border-radius: 18px;
            font-size: 0.8rem;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--blue-100);
            border-color: var(--blue-300);
            color: var(--blue-600);
            text-decoration: none;
            transform: translateY(-1px);
        }
        
        

        /* ========== 搜索区域 ========== */
        .search-hero {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 22px 0 16px;
        }

        .search-box-large {
            display: flex;
            max-width: 640px;
            margin: 0 auto;
            border: 2px solid var(--blue-300);
            border-radius: 28px;
            overflow: hidden;
            transition: border-color var(--transition);
            box-shadow: 0 2px 14px rgba(30, 142, 240, 0.06);
        }

        .search-box-large:focus-within {
            border-color: var(--blue-500);
            box-shadow: 0 4px 20px rgba(30, 142, 240, 0.12);
        }

        .search-box-large input {
            flex: 1;
            border: none;
            padding: 14px 20px;
            font-size: 0.95rem;
            outline: none;
            font-family: inherit;
            background: transparent;
        }

        .search-box-large button {
            background: var(--blue-500);
            color: #fff;
            border: none;
            padding: 0 28px;
            font-weight: 600;
            cursor: pointer;
            font-family: inherit;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: background var(--transition);
        }

        .search-box-large button:hover {
            background: var(--blue-600);
        }

        .search-info {
            text-align: center;
            margin-top: 10px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .search-info strong {
            color: var(--accent);
        }



        /* ========== 搜索结果列表 ========== */
        .result-list {
            display: flex;
            flex-direction: column;
            gap: 1px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--white);
            box-shadow: var(--shadow);
            margin-bottom: 14px;
        }

        .result-item {
            padding: 18px 20px;
            transition: all var(--transition);
            cursor: pointer;
            border-bottom: 1px solid var(--blue-50);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .result-item:last-child {
            border-bottom: none;
        }

        .result-item:hover {
            background: var(--blue-50);
        }

        .result-item .result-title {
            font-size: 0.96rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            transition: color var(--transition);
        }

        .result-item:hover .result-title {
            color: var(--blue-600);
        }

        .result-item .result-url {
            font-size: 0.72rem;
            color: #2e7d32;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .result-item .result-snippet {
            font-size: 0.82rem;
            color: var(--text-light);
            line-height: 1.55;
        }

        .result-snippet .highlight {
            background: #fff3cd;
            color: #856404;
            padding: 1px 3px;
            border-radius: 2px;
            font-weight: 500;
        }

        .result-meta {
            display: flex;
            gap: 12px;
            font-size: 0.7rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        @media (max-width: 900px) {
            .main-layout {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .sidebar-area {
                order: -1;
            }

            .header-search {
                display: none;
            }

            .article-item .a-thumb {
                width: 60px;
                height: 45px;
                font-size: 1.3rem;
            }

            .menu-toggle {
                display: block;
            }

            .article-item {
                padding: 14px;
                gap: 10px;
            }

            .filter-bar .filter-sort {
                margin-left: 0;
                margin-top: 6px;
                width: 100%;
            }

            .filter-bar .filter-sort select {
                width: 100%;
            }
   

            .featured-article {
                flex-direction: column;
            }

            .featured-article .featured-img {
                width: 100%;
                min-height: 160px;
            }

            .category-grid {
                grid-template-columns: repeat(4, 1fr);
            }

            .friend-links-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
                gap: 8px;
            }
        }
                @media (max-width: 768px) {

            .menu-toggle {
                display: block;
            }

            .category-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .article-item {
                padding: 12px 14px;
                gap: 10px;
            }

            .hero {
                padding: 32px 0 26px;
            }

            .friend-links-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 6px;
            }
            .main-nav {

    flex-direction: column;
    width: 50%;
    height: 100vh;
    position: fixed;
    left: -100%;
    top: 0;
    background-color: #FFF;
    transition: left 0.5s ease 0s;
    padding: 12px;
}
.main-nav.show{
    left:0;
}
 .tag-group {
                padding: 14px 12px 10px;
            }
            .tag-cloud a {
                padding: 5px 10px;
                font-size: 0.76rem;
            }
.column-nav {
                gap: 6px;
            }
            .column-nav a {
                padding: 4px 10px;
                font-size: 0.76rem;
            }
            .col-article-item {
                padding: 8px 14px;
                flex-direction: column;
                gap: 2px;
            }
            .col-article-item .col-a-title {
                white-space: normal;
                margin-right: 0;
            }
                .sitemap-grid,
            .sitemap-grid-wide {
                grid-template-columns: 1fr;
            }
            .link-group li {
                flex-direction: column;
                gap: 2px;
                margin-bottom: 8px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }

            .article-item {
                flex-direction: column;
            }

            .article-item .a-thumb {
                width: 100%;
                height: 100px;
                border-radius: var(--radius-sm);
            }

            .pagination a,
            .pagination span {
                min-width: 28px;
                height: 28px;
                font-size: 0.74rem;
            }


            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .featured-article .featured-content {
                padding: 14px;
            }

            .hero-search input {
                padding: 10px 13px;
                font-size: 0.8rem;
            }

            .hero-search button {
                padding: 0 16px;
                font-size: 0.78rem;
            }

            .friend-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        

        /* ========== 文章详情卡片 ========== */
        .article-detail {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            margin-bottom: 18px;
        }
        .article-header {
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .article-header h1 {
            color: var(--blue-900);
            margin-bottom: 10px;
        }
        .article-meta {
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            align-items: center;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .a-category {
            padding: 2px 8px;
            background: var(--blue-100);
            color: var(--blue-600);
            border-radius: 10px;
            font-weight: 500;
            font-size: 0.7rem;
        }
        .article-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-top: 8px;
            list-style: none;
        }
        .article-tags .tag {
            padding: 3px 10px;
            background: var(--blue-50);
            color: var(--text-muted);
            border: 1px solid var(--border);
            border-radius: 12px;
            font-size: 0.7rem;
            transition: all var(--transition);
            cursor: pointer;
        }
        .article-tags .tag:hover {
            background: var(--blue-100);
            color: var(--blue-600);
            border-color: var(--blue-300);
        }
        .article-body {
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.85;
        }
        .article-body p {
            margin-bottom: 14px;
        }
        .article-body h2 {
            margin: 24px 0 12px;
            color: var(--blue-800);
            font-size: 1.2rem;
            border-left: 4px solid var(--blue-400);
            padding-left: 12px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 14px;
            padding-left: 24px;
            list-style-type: disc;
        }
        .article-body ol {
            list-style-type: decimal;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: var(--blue-700);
        }
        .article-footer {
            margin-top: 20px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            align-items: center;
        }
        .article-footer a {
            color: var(--text-muted);
            transition: color var(--transition);
            cursor: pointer;
        }
        .article-footer a:hover {
            color: var(--blue-600);
        }

        /* ========== 随机推荐区块 ========== */
        .random-recommend {
            margin-bottom: 18px;
        }
        .random-recommend h2 {
            margin-bottom: 12px;
            color: var(--blue-800);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .random-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 14px;
        }
        .random-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .random-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--blue-300);
        }
        .random-card .random-title {
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text);
            margin-bottom: 6px;
            transition: color var(--transition);
        }
        .random-card:hover .random-title {
            color: var(--blue-600);
        }
        .random-card .random-meta {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            gap: 10px;
        }
        .random-card .random-excerpt {
            font-size: 0.82rem;
            color: var(--text-light);
            line-height: 1.65;
            max-height: 160px;
            overflow-y: auto;
            padding-right: 6px;
            flex: 1;
            margin-bottom: 8px;
            scrollbar-width: thin;
            scrollbar-color: var(--blue-200) transparent;
        }
        .random-card .random-excerpt::-webkit-scrollbar {
            width: 4px;
        }
        .random-card .random-excerpt::-webkit-scrollbar-track {
            background: transparent;
        }
        .random-card .random-excerpt::-webkit-scrollbar-thumb {
            background: var(--blue-200);
            border-radius: 2px;
        }
        .random-card .read-more {
            align-self: flex-end;
            font-size: 0.76rem;
            color: var(--blue-500);
            font-weight: 500;
            transition: color var(--transition);
        }
        .random-card .read-more:hover {
            color: var(--blue-700);
        }

        /* ========== 相关文章 ========== */
        .related-section {
            margin-bottom: 18px;
        }
        .related-section h2 {
            margin-bottom: 12px;
            color: var(--blue-800);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 10px;
        }
        .related-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px;
            transition: all var(--transition);
            cursor: pointer;
            display: block;
            color: var(--text);
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--blue-300);
            color: var(--text);
        }
        .related-card .rel-title {
            font-weight: 600;
            font-size: 0.84rem;
            margin-bottom: 4px;
            color: var(--text);
            transition: color var(--transition);
        }
        .related-card:hover .rel-title {
            color: var(--blue-600);
        }
        .related-card .rel-meta {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ========== 侧边栏 ========== */
        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 16px;
        }
        .sidebar-card h3 {
            font-size: 0.88rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--blue-800);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .sidebar-card h3::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 16px;
            background: var(--blue-500);
            border-radius: 2px;
        }
        /* 分类列表 */
        .category-list {
            list-style: none;
        }
        .category-list li {
            border-bottom: 1px solid var(--blue-50);
        }
        .category-list li:last-child {
            border-bottom: none;
        }
        .category-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 10px;
            border-radius: var(--radius-xs);
            font-size: 0.8rem;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .category-list a:hover {
            background: var(--blue-50);
            color: var(--blue-600);
        }
        .category-list a.active {
            background: var(--blue-50);
            color: var(--blue-600);
            font-weight: 600;
        }
        .category-list a .count {
            font-size: 0.7rem;
            color: var(--text-muted);
            background: var(--blue-50);
            padding: 2px 8px;
            border-radius: 10px;
        }
        /* 热门文章列表 */
        .hot-list {
            list-style: none;
        }
        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            border-bottom: 1px solid var(--blue-50);
            cursor: pointer;
            transition: all var(--transition);
        }
        .hot-list-item:last-child {
            border-bottom: none;
        }
        .hot-list-item .rank {
            width: 20px;
            font-weight: 700;
            font-size: 0.82rem;
            color: var(--accent);
        }
        .hot-list-item .title {
            flex: 1;
            font-size: 0.8rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: var(--text);
            transition: color var(--transition);
        }
        .hot-list-item:hover .title {
            color: var(--blue-600);
        }
        .hot-list-item .count {
            font-size: 0.68rem;
            color: var(--text-muted);
        }
        /* 标签云 */
        .tag-mini-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
        }
        .tag-mini-cloud li a {
            padding: 4px 10px;
            background: var(--blue-50);
            border: 1px solid var(--border);
            border-radius: 12px;
            font-size: 0.72rem;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .tag-mini-cloud li a:hover {
            background: var(--blue-100);
            border-color: var(--blue-300);
            color: var(--blue-600);
        }

        /* ========== Footer（公共） ========== */
        .site-footer {
            background: var(--blue-900);
            color: #b0c8e0;
            text-align: center;
            padding: 26px 20px 20px;
            margin-top: auto;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: #a0c0e0;
            font-size: 0.76rem;
            transition: color var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
        }
        .site-footer p {
            font-size: 0.68rem;
            color: #7a9ec0;
            margin: 4px 0;
        }
        .site-footer .footer-brand {
            font-weight: 700;
            font-size: 1rem;
            color: #e0ecf8;
            margin-bottom: 4px;
        }
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 20px;
            width: 36px;
            height: 36px;
            background: var(--blue-500);
            color: #fff;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1rem;
            z-index: 90;
            box-shadow: 0 3px 12px rgba(30, 142, 240, 0.3);
            transition: all var(--transition);
        }
        .back-to-top:hover {
            background: var(--blue-700);
            transform: translateY(-2px);
        }

    /* ========== 标签静态描述区块 ========== */
        .tag-intro {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            margin-bottom: 18px;
            box-shadow: var(--shadow);
        }
        .tag-intro .intro-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }
        .tag-intro .intro-header .icon {
            font-size: 1.3rem;
        }
        .tag-intro .intro-header h2 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--blue-800);
        }
        .tag-intro .intro-body {
            font-size: 0.86rem;
            color: var(--text-light);
            line-height: 1.85;
        }
        .tag-intro .intro-body p {
            margin-bottom: 10px;
        }
        .tag-intro .intro-body p:last-child {
            margin-bottom: 0;
        }