/* ============================================================
   theme.css - 青阳易智 主题/专栏模块专用样式
   包含：专题看板、文档列表、侧边栏、精选推荐、排行榜、标签详情页等
   注意：依赖 common.css 中的基础变量和工具类
   ============================================================ */

/* ========== 标签头部（tag.html 专用） ========== */
.tag-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid #eee;
}

.tag-info h1 {
    margin: 0 0 6px 0;
    font-size: 1.8rem;
}

.tag-info .desc {
    color: #666;
    margin-bottom: 8px;
}

.tag-info .stats {
    font-size: 0.9rem;
    color: #888;
}

.tag-info .stats strong {
    color: #333;
}

.tag-badge {
    font-size: 0.9rem;
    background: #f0f0f0;
    padding: 2px 12px;
    border-radius: 20px;
    color: #555;
    margin-left: 8px;
}

.tag-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.tag-actions .btn-custom {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid var(--sun-red);
    border-radius: 20px;
    color: var(--sun-red);
    background: transparent;
    font-size: 0.9rem;
    text-decoration: none;
    transition: 0.2s;
    margin-left: 8px;
}

.tag-actions .btn-custom:hover {
    background: var(--sun-red);
    color: #fff;
}

.related-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.related-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #f0f0f0;
    border-radius: 16px;
    color: #333;
    font-size: 0.85rem;
    text-decoration: none;
    transition: 0.2s;
}

.related-tag:hover {
    background: var(--sun-red);
    color: #fff;
}

/* ========== 专题工具条（index.html 顶部） ========== */
.theme-tools-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 20px;
    margin: 16px 0 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 8px 20px;
}

.theme-tools-bar .theme-stats {
    font-size: 14px;
    color: #555;
    flex: 0 1 auto;
    padding: 6px 0;
}

.theme-tools-bar .theme-stats strong {
    color: var(--sun-red);
    font-weight: 700;
}

.theme-tools-bar .theme-stats .sep {
    color: #ddd;
    user-select: none;
    margin: 0 4px;
}

.theme-tools-bar .theme-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-tools-bar .btn-create {
    background: var(--sun-red);
    color: #fff;
    border: none;
    padding: 6px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.theme-tools-bar .btn-create:hover {
    background: var(--sun-red-dark);
    color: #fff;
    transform: translateY(-1px);
}

/* ========== 左右布局（覆盖 common.css 的通用布局） ========== */
.theme-layout {
    display: flex;
    flex-wrap: nowrap;
    gap: 32px;
    margin: 20px 0 40px;
    align-items: stretch;
}

.theme-main {
    flex: 2.5;
    min-width: 0;
}

.theme-sidebar {
    flex: 1.2;
    min-width: 260px;
}

/* ========== 专题头部（board.html 顶部） ========== */
.theme-header {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px 28px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.theme-header .cover {
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    border-radius: 8px;
    background: #e9ecef;
    overflow: hidden;
}

.theme-header .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.theme-header .info {
    flex: 1;
}

.theme-header .info h2 {
    margin: 0 0 6px 0;
    font-size: 1.6rem;
}

.theme-header .info .desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0 0 8px 0;
}

.theme-header .info .stats {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.theme-header .info .stats span {
    margin-right: 20px;
}

/* ========== 精选专题推荐（index.html） ========== */
.featured-theme-section {
    margin: 20px 0 32px;
    background: #fff;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    padding: 20px 24px 24px;
}

.featured-theme-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.featured-theme-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.featured-theme-header h3::before {
    content: "⭐";
}

.featured-theme-header .text-primary {
    font-size: 0.85rem;
    font-weight: 500;
}

.featured-theme-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.featured-theme-card {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 16px 18px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    cursor: pointer;
}

.featured-theme-card:hover {
    transform: translateY(-3px);
    border-color: var(--sun-red);
    box-shadow: 0 8px 20px rgba(235, 19, 19, 0.08);
}

.featured-theme-card .theme-category {
    display: inline-block;
    background: var(--sun-red-light);
    color: var(--sun-red);
    font-size: 0.6rem;
    padding: 1px 10px;
    border-radius: 30px;
    font-weight: 600;
    margin-bottom: 6px;
}

.featured-theme-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 4px 0;
    color: var(--text-primary);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.featured-theme-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0 0 8px 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.featured-theme-card .featured-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.7rem;
    color: var(--text-muted);
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.featured-theme-card .featured-meta .read-link {
    color: var(--sun-red);
    font-weight: 600;
    font-size: 0.75rem;
}

.featured-theme-card .featured-meta .read-link:hover {
    text-decoration: underline;
}

/* ========== 专题分类筛选（index.html） ========== */
.theme-category-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin: 20px 0 28px;
}

.theme-category-filter .filter-btn {
    background: white;
    border: 1px solid var(--border-color);
    padding: 6px 18px;
    border-radius: 40px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.85rem;
    transition: all 0.2s;
    color: var(--text-secondary);
    text-decoration: none;
}

.theme-category-filter .filter-btn:hover {
    background: var(--sun-red-light);
    border-color: var(--sun-red);
    color: var(--sun-red);
}

.theme-category-filter .filter-btn.active {
    background: var(--sun-red);
    color: white;
    border-color: var(--sun-red);
    box-shadow: 0 4px 12px rgba(235, 19, 19, 0.2);
}

/* ========== 专题网格与卡片（index.html） ========== */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin: 0;
}

.theme-card {
    background: white;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
}

.theme-card:hover {
    transform: translateY(-4px);
    border-color: var(--sun-red);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.10);
}

.theme-card .theme-info {
    padding: 18px 18px 14px;
}

.theme-card .theme-info h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.theme-card .theme-info h3 .hot-badge {
    background: var(--sun-red-light);
    padding: 1px 10px;
    border-radius: 30px;
    font-size: 0.6rem;
    color: var(--sun-red);
    font-weight: 600;
}

.theme-card .theme-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.theme-card .theme-stats {
    display: flex;
    gap: 16px;
    font-size: 0.7rem;
    color: #aa9f91;
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
    margin-top: 4px;
}

.theme-card .theme-stats span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.theme-card .theme-stats .stat-highlight {
    color: var(--sun-red);
    font-weight: 600;
}

/* ========== 文档列表（board.html） ========== */
.doc-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.doc-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--card-bg);
    border-radius: 8px;
    padding: 16px 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s, transform 0.1s;
    cursor: pointer;
    border-left: 4px solid var(--sun-red);
}

.doc-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
    transform: translateY(-2px);
}

.doc-icon {
    flex-shrink: 0;
    font-size: 2.4rem;
    line-height: 1;
    width: 48px;
    text-align: center;
    margin-top: 4px;
}

.doc-body {
    flex: 1;
    min-width: 0;
}

.doc-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.doc-title .file-type {
    font-size: 0.7rem;
    background: var(--tag-bg);
    color: var(--tag-color);
    padding: 0 8px;
    border-radius: 12px;
    font-weight: 400;
}

.doc-title .price-tag {
    font-size: 0.8rem;
    background: #f59e0b;
    color: #fff;
    padding: 0 10px;
    border-radius: 12px;
    font-weight: 500;
}

.doc-title .price-tag.free {
    background: #10b981;
}

.doc-title .rank-badge {
    font-size: 0.6rem;
    padding: 0 8px;
    border-radius: 12px;
    font-weight: 500;
    line-height: 1.8;
}

.doc-title .rank-badge.hot {
    background: #fee2e2;
    color: #dc2626;
}

.doc-title .rank-badge.recommend {
    background: #dbeafe;
    color: #2563eb;
}

.doc-title .rank-badge.essence {
    background: #fef3c7;
    color: #d97706;
}

.doc-summary {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 6px 0 10px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.doc-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

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

.doc-meta .tag-item {
    background: var(--tag-bg);
    padding: 0 8px;
    border-radius: 12px;
    color: var(--tag-color);
    font-size: 0.7rem;
}

/* ========== 侧边栏卡片（通用） ========== */
.theme-sidebar .sidebar-card {
    background: white;
    border-radius: 20px;
    padding: 16px 18px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.theme-sidebar .sidebar-card .sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 10px;
}

.theme-sidebar .sidebar-card .sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    border-bottom: none;
    padding-bottom: 0;
}

.theme-sidebar .sidebar-card .sidebar-more {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--sun-red);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.theme-sidebar .sidebar-card .sidebar-more:hover {
    text-decoration: underline;
}


/* ========== 侧边栏快捷操作 ========== */
.theme-sidebar .quick-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.theme-sidebar .quick-actions .btn-quick {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 0;
    border-radius: 30px;
    background: var(--bg-light);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: 0.2s;
    border: 1px solid var(--border-color);
}

.theme-sidebar .quick-actions .btn-quick:hover {
    background: var(--sun-red-light);
    border-color: var(--sun-red);
    color: var(--sun-red);
}

.theme-sidebar .quick-actions .btn-quick.primary {
    background: var(--sun-red);
    color: #fff;
    border-color: var(--sun-red);
}

.theme-sidebar .quick-actions .btn-quick.primary:hover {
    background: var(--sun-red-dark);
}

/* ========== 侧边栏其他组件 ========== */
.related-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-list li {
    padding: 5px 0;
    border-bottom: 1px dashed var(--border-color);
}

.related-list li:last-child {
    border-bottom: none;
}

.related-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: color 0.2s;
    gap: 10px;
    font-size: 0.85rem;
}

.related-list a:hover {
    color: var(--sun-red);
}

.related-list .title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.related-list .time {
    font-size: 0.65rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

.theme-card-mini {
    padding: 8px 10px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: 0.2s;
    cursor: pointer;
    margin-bottom: 8px;
}

.theme-card-mini:last-child {
    margin-bottom: 0;
}

.theme-card-mini:hover {
    border-color: var(--sun-red);
    background: var(--sun-red-light);
}

.theme-card-mini .theme-name {
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.theme-card-mini .theme-name .hot-badge {
    background: var(--sun-red-light);
    padding: 1px 8px;
    border-radius: 30px;
    font-size: 0.6rem;
    color: var(--sun-red);
    font-weight: 600;
    flex-shrink: 0;
}

.theme-card-mini .theme-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.4;
}

.theme-card-mini .theme-stat {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 3px;
}

.side-list-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.side-list-grid a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 20px;
    background: var(--bg-light);
    transition: 0.2s;
    font-size: 0.8rem;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid transparent;
}

.side-list-grid a:hover {
    background: var(--sun-red-light);
    border-color: var(--sun-red);
    color: var(--sun-red);
}

.latest-post-item {
    padding: 6px 0;
    border-bottom: 1px dashed var(--border-color);
}

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

.latest-post-item .post-title-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    transition: color 0.2s;
}

.latest-post-item .post-title-link:hover {
    color: var(--sun-red);
}

.latest-post-item .post-meta-info {
    display: flex;
    gap: 10px;
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.latest-post-item .post-meta-info .author {
    color: var(--text-secondary);
}

.latest-post-item .post-meta-info .time {
    color: var(--text-muted);
}

/* ========== 标签云 ========== */
.theme-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px 7px;
    padding: 2px 0;
}

.theme-tag-cloud .tag-cloud-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 12px;
    border-radius: 30px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    transition: all 0.2s;
    line-height: 1.6;
    white-space: nowrap;
    min-height: 28px;
}

.theme-tag-cloud .tag-cloud-item:hover {
    background: var(--sun-red-light);
    border-color: var(--sun-red);
    color: var(--sun-red);
    transform: translateY(-1px);
}

.theme-tag-cloud .tag-cloud-item.size-sm {
    font-size: 0.65rem;
    padding: 2px 8px;
    min-height: 24px;
}

.theme-tag-cloud .tag-cloud-item.size-md {
    font-size: 0.8rem;
    padding: 3px 14px;
    min-height: 28px;
}

.theme-tag-cloud .tag-cloud-item.size-lg {
    font-size: 0.9rem;
    padding: 4px 18px;
    min-height: 32px;
}

.theme-tag-cloud .tag-cloud-item.size-xl {
    font-size: 1rem;
    padding: 4px 22px;
    min-height: 34px;
    font-weight: 600;
}

/* ========== 排行榜专用（rank.html） ========== */
.rank-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.rank-tabs .tab {
    padding: 8px 24px;
    border-radius: 30px 30px 0 0;
    font-weight: 600;
    border: none;
    text-decoration: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
}

.rank-tabs .tab.active {
    background: var(--sun-red);
    color: #fff;
}

.rank-item {
    padding: 6px 0;
}

.rank-item .rank-num {
    font-weight: 700;
    font-size: 0.9rem;
    width: 28px;
    text-align: center;
    color: var(--text-muted);
    flex-shrink: 0;
}

.rank-item .rank-num.top1 {
    color: #f59e0b;
}

.rank-item .rank-num.top2 {
    color: #94a3b8;
}

.rank-item .rank-num.top3 {
    color: #b45309;
}

.rank-item .title-row a {
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
}

.rank-item .title-row a:hover {
    color: var(--sun-red);
}

.rank-item .rank-badge {
    font-size: 0.6rem;
    padding: 0 8px;
    border-radius: 12px;
    font-weight: 500;
    line-height: 1.8;
    margin-left: 4px;
}

.rank-item .rank-badge.hot {
    background: #fee2e2;
    color: #dc2626;
}

.rank-item .rank-badge.recommend {
    background: #dbeafe;
    color: #2563eb;
}

.rank-item .rank-badge.essence {
    background: #fef3c7;
    color: #d97706;
}

.rank-item .rank-badge.new {
    background: #d1fae5;
    color: #059669;
}

.rank-item .post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.rank-item .post-meta .category-tag {
    background: var(--tag-bg);
    padding: 0 8px;
    border-radius: 12px;
    color: var(--tag-color);
}

/* ========== 详情页专用（detail.html） ========== */
.doc-info-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
    font-size: 0.9rem;
}

.doc-info-grid .label {
    color: var(--text-muted);
    font-weight: 500;
}

.doc-info-grid .value {
    color: var(--text-primary);
    word-break: break-all;
}

.doc-info-grid .value .price-badge {
    background: #f59e0b;
    color: #fff;
    padding: 0 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.doc-info-grid .value .price-badge.free {
    background: #10b981;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--sun-red);
    color: #fff;
    padding: 2px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s;
    line-height: 1.8;
    white-space: nowrap;
}

.download-btn:hover {
    background: var(--sun-red-dark);
    color: #fff;
}

.latest-list .doc-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-color);
}

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

.latest-list .doc-item .doc-icon-sm {
    flex-shrink: 0;
    font-size: 1.2rem;
    line-height: 1.4;
    width: 28px;
    text-align: center;
    margin-top: 2px;
}

.latest-list .doc-item .doc-info {
    flex: 1;
    min-width: 0;
}

.latest-list .doc-item .doc-info .doc-title {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.2s;
}

.latest-list .doc-item .doc-info .doc-title:hover {
    color: var(--sun-red);
}

.latest-list .doc-item .doc-meta-sm {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 12px;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.latest-list .doc-item .doc-meta-sm .price-tag-sm {
    font-size: 0.65rem;
    background: #f59e0b;
    color: #fff;
    padding: 0 8px;
    border-radius: 10px;
    font-weight: 500;
    white-space: nowrap;
    line-height: 1.6;
}

.latest-list .doc-item .doc-meta-sm .price-tag-sm.free {
    background: #10b981;
}

/* ========== 响应式（主题模块专用） ========== */
@media (max-width: 1024px) {
    .featured-theme-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .theme-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .theme-layout {
        flex-wrap: wrap;
        flex-direction: column;
    }

    .theme-main, .theme-sidebar {
        flex: 1 1 100%;
        width: 100%;
        min-width: 0;
    }

    .theme-tools-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 10px 16px;
    }

    .theme-tools-bar .theme-stats {
        font-size: 13px;
        text-align: center;
    }

    .theme-tools-bar .theme-actions {
        margin-left: 0;
        justify-content: center;
    }

    .featured-theme-section {
        padding: 16px;
    }

    .featured-theme-grid {
        grid-template-columns: 1fr;
    }

    .theme-grid {
        grid-template-columns: 1fr 1fr;
    }

    .theme-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .theme-header .cover {
        width: 100%;
        height: 160px;
    }

    .doc-card {
        align-items: stretch;
        padding: 14px 16px;
    }

    .doc-icon {
        font-size: 2rem;
        width: auto;
        text-align: left;
    }

    .theme-sidebar .quick-actions {
        grid-template-columns: 1fr 1fr;
    }

    .theme-sidebar .sidebar-card {
        padding: 12px 14px;
    }

    .side-list-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .theme-grid {
        grid-template-columns: 1fr;
    }
}

/* ----- 左侧网格（标题与描述分行） ----- */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.doc-grid-item {
    background: #fff;
    border: 1px solid #e9ecf0;
    border-radius: 8px;
    padding: 12px 16px;
    cursor: pointer;
    transition: box-shadow 0.2s, border-color 0.2s;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.doc-grid-item:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    border-color: #c0c8d4;
}
.doc-grid-item .doc-icon {
    font-size: 28px;
    flex-shrink: 0;
    width: 36px;
    text-align: center;
    margin-top: 2px;
}
.doc-grid-item .doc-content {
    flex: 1;
    min-width: 0;
}
.doc-grid-item .doc-title {
    font-size: 15px;
    font-weight: 500;
    color: #1f2a3a;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}
.doc-grid-item .doc-title a {
    color: inherit;
    text-decoration: none;
}
.doc-grid-item .doc-title a:hover {
    color: #2d7eff;
}
.doc-grid-item .doc-badge {
    font-size: 11px;
    background: #f0f2f5;
    color: #5a6b7c;
    padding: 0 8px;
    border-radius: 12px;
    line-height: 20px;
    white-space: nowrap;
}
.doc-grid-item .doc-badge.hot {
    background: #fff0e6;
    color: #e05a2a;
}
.doc-grid-item .doc-badge.recommend {
    background: #e6f0ff;
    color: #2d7eff;
}
.doc-grid-item .doc-badge.top {
    background: #fff5d6;
    color: #b8860b;
}
.doc-grid-item .doc-desc {
    font-size: 13px;
    color: #5a6b7c;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 2px 0 6px 0;
    line-height: 1.4;
}
.doc-grid-item .doc-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 12px;
    color: #7a8a9e;
}
.doc-grid-item .doc-meta span {
    display: flex;
    align-items: center;
    gap: 3px;
}

/* ----- 底部 Tab（右侧仅显示日期） ----- */
.bottom-tab-section {
    margin-top: 30px;
    border-top: 1px solid #e9ecf0;
    padding-top: 20px;
}
.bottom-tab-section .tab-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.bottom-tab-section .tab-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1f2a3a;
    margin: 0;
}
.bottom-tab-section .tab-buttons {
    display: flex;
    gap: 8px;
}
.bottom-tab-section .tab-btn {
    background: none;
    border: none;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    color: #5a6b7c;
    transition: background 0.2s, color 0.2s;
}
.bottom-tab-section .tab-btn.active {
    background: #2d7eff;
    color: #fff;
}
.bottom-tab-section .tab-btn:hover:not(.active) {
    background: #f0f2f5;
}
.bottom-tab-content {
    display: none;
}
.bottom-tab-content.active {
    display: block;
}
.bottom-doc-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.bottom-doc-item {
    display: flex;
    align-items: center;
    background: #f8f9fb;
    border-radius: 6px;
    padding: 6px 12px;
    transition: background 0.2s;
    gap: 10px;
}
.bottom-doc-item:hover {
    background: #f0f2f5;
}
.bottom-doc-item .doc-icon-sm {
    font-size: 20px;
    flex-shrink: 0;
}
.bottom-doc-item .doc-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 16px;
}
.bottom-doc-item .doc-info a {
    font-size: 14px;
    color: #1f2a3a;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}
.bottom-doc-item .doc-info a:hover {
    color: #2d7eff;
}
.bottom-doc-item .doc-meta-sm {
    font-size: 12px;
    color: #7a8a9e;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    white-space: nowrap;
}
.bottom-doc-item .doc-extra {
    font-size: 12px;
    color: #7a8a9e;
    white-space: nowrap;
    flex-shrink: 0;
}
@media (max-width: 768px) {
    .doc-grid {
        grid-template-columns: 1fr;
    }
}