/* ===== CSS Variables ===== */
:root {
    --primary: #1a5cff;
    --primary-dark: #0a4ad0;
    --primary-light: #e9edff;
    --bg-body: #f4f6f9;
    --bg-white: #ffffff;
    --text-dark: #1e1e2a;
    --text-mid: #2d2d3f;
    --text-light: #6b6b80;
    --border-light: #e6eaf0;
    --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
    --radius: 10px;
    --radius-sm: 6px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* 基础重置（仅内容部分所需） */
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: var(--font);
    background: var(--bg-body);
    color: var(--text-dark);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================================
   1. 面包屑
   ============================================================ */
.breadcrumb-wrap {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    padding: 12px 0;
}
.breadcrumb {
    font-size: 14px;
    color: var(--text-light);
}
.breadcrumb a {
    color: var(--text-light);
    transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep {
    margin: 0 8px;
    font-size: 12px;
    color: var(--border-light);
}
.breadcrumb .current {
    color: var(--text-dark);
    font-weight: 500;
}

/* ============================================================
   3. 标签云
   ============================================================ */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 16px;
    padding: 10px 0 10px;
    min-height: 100px;
    align-items: center;
}

.tags-cloud .tag-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    border-radius: 30px;
    background: var(--bg-white);
    color: var(--text-mid);
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
    border: 1px solid var(--border-light);
    text-decoration: none;
    cursor: pointer;
}
.tags-cloud .tag-item:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.tags-cloud .tag-item.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.tags-cloud .tag-item .tag-name {
    font-weight: 500;
}
.tags-cloud .tag-item .tag-count {
    font-size: 0.75em;
    color: var(--text-light);
    background: var(--bg-body);
    padding: 0 8px;
    border-radius: 30px;
    line-height: 1.6;
    transition: color 0.2s;
}
.tags-cloud .tag-item.active .tag-count,
.tags-cloud .tag-item:hover .tag-count {
    background: rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.8);
}

/* 标签大小 */
.tags-cloud .tag-item.size-xl { font-size: 22px; padding: 10px 26px; }
.tags-cloud .tag-item.size-xl .tag-count { font-size: 14px; }
.tags-cloud .tag-item.size-lg { font-size: 18px; padding: 8px 22px; }
.tags-cloud .tag-item.size-lg .tag-count { font-size: 13px; }
.tags-cloud .tag-item.size-md { font-size: 15px; padding: 6px 18px; }
.tags-cloud .tag-item.size-md .tag-count { font-size: 12px; }
.tags-cloud .tag-item.size-sm { font-size: 13px; padding: 5px 14px; }
.tags-cloud .tag-item.size-sm .tag-count { font-size: 11px; }
.tags-cloud .tag-item.size-xs { font-size: 12px; padding: 4px 12px; }
.tags-cloud .tag-item.size-xs .tag-count { font-size: 10px; }

/* 按字母分组视图 */
.tags-cloud.alpha-view {
    display: block;
    columns: 3 220px;
    column-gap: 30px;
}
.tags-cloud.alpha-view .alpha-group {
    break-inside: avoid;
    margin-bottom: 20px;
}
.tags-cloud.alpha-view .alpha-group .alpha-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    padding-bottom: 6px;
    border-bottom: 2px solid var(--primary-light);
    margin-bottom: 10px;
}
.tags-cloud.alpha-view .alpha-group .tag-item {
    display: inline-flex;
    margin: 0 8px 10px 0;
    font-size: 14px;
    padding: 4px 14px;
}
.tags-cloud.alpha-view .alpha-group .tag-item .tag-count {
    font-size: 11px;
}

/* ============================================================
   4. 文章列表区域
   ============================================================ */
.articles-section {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 24px 28px 28px;
    box-shadow: var(--shadow-sm);
}
.articles-section .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 16px;
    padding-bottom: 16px;
    margin:0;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 20px;
}
.articles-section .section-header h3 {
    font-size: 19px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}
.articles-section .section-header h3 i {
    color: var(--primary);
}
.articles-section .section-header .article-count {
    font-size: 14px;
    color: var(--text-light);
}

/* ============================================================
   5. 文章列表 - 左右布局
   ============================================================ */
.articles-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 32px;
    align-items: start;
}

/* 左侧文章列表 */
.articles-left {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.articles-left .list-item {
    display: flex;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-light);
}
.articles-left .list-item:last-child {
    border-bottom: none;
}
.articles-left .list-item .item-thumb {
    flex-shrink: 0;
    width: 180px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}
.articles-left .list-item .item-thumb img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    transition: transform 0.3s;
}
.articles-left .list-item:hover .item-thumb img {
    transform: scale(1.03);
}
.articles-left .list-item .item-thumb .item-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--primary);
    color: #fff;
    font-size: 11px;
    padding: 0 10px;
    border-radius: 30px;
    line-height: 22px;
    font-weight: 500;
}
.articles-left .list-item .item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.articles-left .list-item .item-info h4 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 6px;
}
.articles-left .list-item .item-info h4 a:hover {
    color: var(--primary);
}
.articles-left .list-item .item-info .item-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 10px;
    flex: 1;
}
.articles-left .list-item .item-info .item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: var(--text-light);
}
.articles-left .list-item .item-info .item-meta i {
    margin-right: 4px;
}

/* ============================================================
   6. 右侧边栏
   ============================================================ */
.articles-right {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 80px;
    align-self: flex-start;
}

.side-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 18px 20px 20px;
    box-shadow: var(--shadow-sm);
}
.side-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.side-card .card-header h4 {
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
}
.side-card .card-header .more {
    font-size: 13px;
    color: var(--text-light);
}
.side-card .card-header .more:hover {
    color: var(--primary);
}

/* 推荐资讯 */
.recommend-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.recommend-item {
    display: flex;
    gap: 12px;
    align-items: center;
}
.recommend-item .rec-thumb {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary);
    overflow:hidden;
}

.recommend-item .rec-thumb img{
    display:block;
    width:100%;
    height:100%;
    object-fit: cover;
}
.recommend-item .rec-info {
    flex: 1;
    min-width: 0;
}
.recommend-item .rec-info h5 {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.recommend-item .rec-info h5 a:hover {
    color: var(--primary);
}
.recommend-item .rec-info .rec-time {
    font-size: 12px;
    color: var(--text-light);
}

/* 最新资讯 */
.latest-list {
    list-style: none;
}
.latest-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-light);
    gap: 10px;
}
.latest-list li:last-child {
    border-bottom: none;
}
.latest-list li a {
    font-size: 14px;
    line-height: 1.5;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.latest-list li a:hover {
    color: var(--primary);
}
.latest-list li .latest-time {
    font-size: 12px;
    color: var(--text-light);
    white-space: nowrap;
    flex-shrink: 0;
}

/* 广告位 */
.ad-card {
    background: linear-gradient(135deg, #1a5cff, #6c4dff);
    border-radius: var(--radius);
    padding: 20px 24px;
    color: #fff;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s;
}
.ad-card:hover {
    transform: translateY(-2px);
}
.ad-card-secondary {
    background: linear-gradient(135deg, #f97316, #fb923c);
}
.ad-content {
    text-align: center;
}
.ad-content .ad-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 0 12px;
    border-radius: 30px;
    font-size: 11px;
    line-height: 22px;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}
.ad-content .ad-icon {
    font-size: 32px;
    margin-bottom: 8px;
    display: block;
}
.ad-content h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
}
.ad-content p {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 14px;
    line-height: 1.6;
}
.ad-content .ad-btn {
    display: inline-block;
    background: #fff;
    color: var(--primary);
    padding: 5px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    transition: transform 0.2s;
}
.ad-card-secondary .ad-content .ad-btn {
    color: #f97316;
}
.ad-content .ad-btn:hover {
    transform: scale(1.04);
}

/* ============================================================
   7. 分页
   ============================================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 24px;
    flex-wrap: wrap;
}
.pagination a {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-mid);
    transition: all 0.2s;
    border: 1px solid transparent;
}
.pagination a:hover {
    background: var(--primary-light);
    color: var(--primary);
}
.pagination a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.pagination a.prev,
.pagination a.next {
    border-color: var(--border-light);
}
.pagination a.prev:hover,
.pagination a.next:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}
.pagination span {
    padding: 6px 10px;
    color: var(--text-light);
}

/* ============================================================
   9. 响应式
   ============================================================ */
@media (max-width: 1024px) {
    .tags-sort,
    .tags-filter {
        flex-wrap: wrap;
    }
    .tags-cloud.alpha-view {
        columns: 2 200px;
    }
    .articles-layout {
        grid-template-columns: 1fr;
    }
    .articles-right {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        position: static;
        top: auto;
    }
}

@media (max-width: 768px) {
    .tags-cloud .tag-item.size-xl { font-size: 18px; padding: 8px 20px; }
    .tags-cloud .tag-item.size-lg { font-size: 16px; padding: 6px 16px; }
    .tags-cloud .tag-item.size-md { font-size: 14px; padding: 5px 14px; }
    .tags-cloud .tag-item.size-sm { font-size: 12px; padding: 4px 12px; }
    .tags-cloud .tag-item.size-xs { font-size: 11px; padding: 3px 10px; }
    .tags-cloud.alpha-view {
        columns: 1;
    }
    .articles-section {
        padding: 18px 16px 20px;
    }
    .articles-left .list-item {
        flex-direction: column;
        padding: 12px 0;
    }
    .articles-left .list-item .item-thumb {
        width: 100%;
        height: auto;
    }
    .articles-left .list-item .item-thumb img {
        height: 110px;
    }
    .articles-left .list-item .item-info h4 {
        font-size: 16px;
    }
    .articles-right {
        grid-template-columns: 1fr;
        position: static;
        top: auto;
    }
}

@media (max-width: 480px) {
    .tags-sort a,
    .tags-filter a {
        font-size: 12px;
        padding: 1px 8px;
    }
    .tags-filter a {
        font-size: 11px;
        padding: 1px 6px;
        min-width: 20px;
    }
    .tags-cloud {
        gap: 8px 10px;
        padding: 10px 0;
    }
    .tags-cloud .tag-item.size-xl { font-size: 16px; padding: 6px 16px; }
    .tags-cloud .tag-item.size-lg { font-size: 14px; padding: 5px 14px; }
    .tags-cloud .tag-item.size-md { font-size: 13px; padding: 4px 12px; }
    .tags-cloud .tag-item.size-sm { font-size: 12px; padding: 3px 10px; }
    .tags-cloud .tag-item.size-xs { font-size: 11px; padding: 3px 8px; }
    .tags-cloud .tag-item .tag-count { font-size: 10px !important; padding: 0 6px; }
    .articles-section {
        padding: 14px 12px 16px;
    }
    .articles-section .section-header h3 {
        font-size: 17px;
    }
    .articles-left .list-item .item-info h4 {
        font-size: 15px;
    }
    .articles-left .list-item .item-info .item-desc {
        font-size: 13px;
        -webkit-line-clamp: 2;
    }
    .articles-left .list-item .item-info .item-meta {
        font-size: 12px;
        gap: 10px;
    }
    .pagination { gap: 4px; }
    .pagination a { padding: 3px 8px; font-size: 12px; }
    .pagination a.prev,
    .pagination a.next { padding: 3px 10px; }
}