/* ============================================================
   文章详情页样式 - artical.css
   命名前缀: art-
   ============================================================ */
/* 修复祖先 overflow-x:hidden 导致 position:sticky 失效 */
body > .overflow-x-hidden { overflow-x: clip; }

:root {
    --art-primary: #2563EB;
    --art-primary-dark: #1D4ED8;
    --art-primary-light: #EFF6FF;
    --art-text-dark: #1F2937;
    --art-text-gray: #6B7280;
    --art-text-light: #9CA3AF;
    --art-bg-gray: #F3F4F6;
    --art-bg-page: #F8FAFC;
    --art-border: #E5E7EB;
    --art-radius: 8px;
    --art-radius-sm: 6px;
    --art-shadow: 0 1px 3px rgba(0,0,0,0.1);
    --art-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
}

/* 页面背景 */
.art-page-wrapper { background-color: var(--art-bg-page); padding-top: 80px; }

/* 主容器 - 三栏布局 */
.art-container { max-width: 1400px; margin: 0 auto; padding: 32px 24px; display: flex; gap: 24px; }

/* ==================== 左侧目录导航 ==================== */
.art-toc-sidebar { flex-shrink: 0; width: 200px; position: sticky; top: 100px; align-self: flex-start; margin-top: 73px; }
.art-toc { background: #fff; border: 1px solid var(--art-primary); padding: 16px; border-radius: var(--art-radius); max-height: calc(100vh - 140px); overflow-y: auto; }
.art-toc-header { font-size: 14px; font-weight: 700; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--art-border); color: var(--art-text-dark); }
.art-toc-list { list-style: none; padding: 0; margin: 0; }
.art-toc-item { margin-bottom: 6px; }
.art-toc-item a { color: #666; text-decoration: none; font-size: 13px; line-height: 1.5; display: block; padding: 4px 8px; border-radius: 4px; transition: all 0.2s; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.art-toc-item a:hover, .art-toc-item a.active { color: var(--art-primary); background: var(--art-primary-light); }
.art-toc-item.art-toc-sub { padding-left: 12px; }
.art-toc-item.art-toc-sub a { font-size: 12px; color: #888; }

/* ==================== 主内容区 ==================== */
.art-main-content { flex: 1; min-width: 0; }

/* 面包屑 */
.art-breadcrumb { font-size: 13px; color: var(--art-text-gray); margin-bottom: 20px; }
.art-breadcrumb a { color: var(--art-primary); text-decoration: none; }
.art-breadcrumb a:hover { text-decoration: underline; }
.art-breadcrumb .art-sep { margin: 0 6px; color: var(--art-text-light); }

/* 文章头部卡片 */
.art-header-card { background: #fff; padding: 32px; border-radius: var(--art-radius); box-shadow: var(--art-shadow-sm); margin-bottom: 24px; border: 1px solid var(--art-border); }
.art-title { font-size: 28px; font-weight: 700; color: var(--art-text-dark); margin: 0 0 16px; line-height: 1.4; }
.art-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; color: var(--art-text-gray); padding-bottom: 20px; border-bottom: 1px solid var(--art-border); }
.art-meta-item { display: flex; align-items: center; gap: 5px; }
.art-meta-item i { font-size: 14px; }
.art-meta-views { margin-left: auto; color: var(--art-text-light); display: flex; align-items: center; gap: 5px; }
.art-meta-like { cursor: pointer; display: flex; align-items: center; gap: 5px; color: var(--art-text-light); transition: color 0.3s; margin-left: auto; }
.art-meta-like:hover { color: var(--art-primary); }

/* 文章内容卡片 */
.art-content-card { background: #fff; padding: 32px; border-radius: var(--art-radius); box-shadow: var(--art-shadow-sm); border: 1px solid var(--art-border); }
.art-content-card .article-content img { max-width: 100%; height: auto; display: block; margin: 16px 0; }
.art-content-card .article-content p { margin: 16px 0; }
.art-content-card .article-content h2,
.art-content-card .article-content h3 { scroll-margin-top: 80px; }
.art-content-card table { width: 100%; border-collapse: collapse; margin: 20px 0; background: #FAFAFA; border-radius: var(--art-radius); overflow: hidden; }
.art-content-card table th, .art-content-card table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--art-border); font-size: 14px; }
.art-content-card table th { background: var(--art-primary); color: #fff; font-weight: 600; }
.art-content-card table tr:last-child td { border-bottom: none; }
.art-content-card table tr:hover td { background: #F0F9FF; }
.art-content-card table td:first-child { font-weight: 500; color: var(--art-text-dark); }
.art-content-card .download-block-qd8 img,
.art-content-card .download-block-printer img { margin: 0; border-radius: 0; box-shadow: none; }

/* 标签区域 */
.art-tags { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--art-border); }
.art-tags-title { font-size: 14px; font-weight: 600; color: var(--art-text-gray); margin-bottom: 12px; }
.art-tags-list { display: flex; flex-wrap: wrap; gap: 8px; }
.art-tag-item { background: var(--art-primary-light); color: var(--art-primary); padding: 6px 14px; border-radius: 20px; font-size: 13px; text-decoration: none; transition: all 0.3s; display: inline-block; }
.art-tag-item:hover { background: var(--art-primary); color: #fff; text-decoration: none; }

/* 上下篇导航 */
.art-nav { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--art-border); display: flex; flex-direction: column; gap: 12px; }
.art-nav-link { color: var(--art-text-gray); text-decoration: none; font-size: 14px; display: flex; align-items: center; gap: 6px; transition: color 0.3s; }
.art-nav-link span { color: var(--art-text-dark); font-weight: 500; }
.art-nav-link a { color: var(--art-primary); text-decoration: none; }
.art-nav-link a:hover { color: var(--art-primary-dark); text-decoration: none; }

/* 最新资讯区块 */
.art-latest-section { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--art-border); }
.art-latest-header { font-size: 18px; font-weight: 700; color: var(--art-text-dark); margin-bottom: 20px; display: flex; align-items: center; gap: 8px; padding-bottom: 12px; border-bottom: 2px solid var(--art-primary); }
.art-latest-header i { color: var(--art-primary); }
.art-latest-list { list-style: none; padding: 0; margin: 0; }
.art-latest-item { display: flex; gap: 16px; padding: 16px; margin: 0 -16px; border-bottom: 1px solid var(--art-border); border-radius: var(--art-radius-sm); transition: background 0.2s; }
.art-latest-item:last-child { border-bottom: none; }
.art-latest-item:hover { background: var(--art-bg-gray); }
.art-latest-item .art-latest-cover { flex-shrink: 0; width: 160px; height: 100px; border-radius: var(--art-radius-sm); overflow: hidden; }
.art-latest-item .art-latest-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.art-latest-item:hover .art-latest-cover img { transform: scale(1.05); }
.art-latest-item .art-latest-body { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: space-between; }
.art-latest-item .art-latest-title { font-size: 15px; font-weight: 600; color: var(--art-text-dark); text-decoration: none; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.art-latest-item .art-latest-title:hover { color: var(--art-primary); }
.art-latest-item .art-latest-summary { font-size: 13px; color: var(--art-text-gray); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: 6px; }
.art-latest-item .art-latest-info { display: flex; align-items: center; gap: 16px; font-size: 12px; color: var(--art-text-light); margin-top: 8px; }
.art-latest-item .art-latest-info i { margin-right: 3px; }

/* ==================== 右侧边栏 ==================== */
.art-sidebar { flex-shrink: 0; width: 280px; display: flex; flex-direction: column; gap: 24px; }
.art-widget { background: #fff; border-radius: var(--art-radius); padding: 24px; box-shadow: var(--art-shadow-sm); border: 1px solid var(--art-border); }
.art-widget-header { font-size: 16px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; padding-bottom: 12px; border-bottom: 2px solid var(--art-primary); }
.art-widget-header i { color: var(--art-primary); }

/* 搜索框 */
.art-search-box { display: flex; gap: 0; }
.art-search-input { flex: 1; padding: 10px 12px; border: 1px solid #DDD; border-right: none; border-radius: 4px 0 0 4px; font-size: 13px; outline: none; transition: border-color 0.2s; }
.art-search-input:focus { border-color: var(--art-primary); }
.art-search-input::placeholder { color: #999; }
.art-search-btn { padding: 10px 14px; background: var(--art-primary); border: 1px solid var(--art-primary); border-radius: 0 4px 4px 0; color: #fff; cursor: pointer; transition: background 0.2s; }
.art-search-btn:hover { background: var(--art-primary-dark); }

/* 排名列表 */
.art-rank-list { list-style: none; padding: 0; margin: 0; }
.art-rank-item { padding: 14px 0; border-bottom: 1px solid var(--art-border); display: flex; gap: 12px; align-items: flex-start; }
.art-rank-item:last-child { border-bottom: none; padding-bottom: 0; }
.art-rank-item:first-child { padding-top: 0; }
.art-rank-num { width: 24px; height: 24px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; flex-shrink: 0; background: var(--art-bg-gray); color: var(--art-text-light); }
.art-rank-item:nth-child(1) .art-rank-num { background: linear-gradient(135deg, #EF4444, #DC2626); color: #fff; }
.art-rank-item:nth-child(2) .art-rank-num { background: linear-gradient(135deg, #F97316, #EA580C); color: #fff; }
.art-rank-item:nth-child(3) .art-rank-num { background: linear-gradient(135deg, #F59E0B, #D97706); color: #fff; }
.art-rank-item a { color: var(--art-text-dark); text-decoration: none; font-size: 14px; line-height: 1.5; transition: color 0.2s; }
.art-rank-item a:hover { color: var(--art-primary); }

/* 二维码 */
.art-qrcode { text-align: center; }
.art-qrcode img { max-width: 180px; border-radius: var(--art-radius); margin: 0 auto; }

/* ==================== 响应式 ==================== */
@media (max-width: 1200px) {
    .art-toc-sidebar { width: 180px; }
    .art-sidebar { width: 260px; }
}

@media (max-width: 1024px) {
    .art-container { flex-direction: column; padding: 20px 16px; }
    .art-toc-sidebar { width: 100%; position: static; align-self: stretch; order: -1; margin-top: 0; }
    .art-toc { max-height: none; overflow-y: visible; }
    .art-main-content { order: 1; }
    .art-sidebar { width: 100%; padding-top: 0; order: 2; flex-direction: row; flex-wrap: wrap; }
    .art-widget { flex: 1 1 calc(50% - 12px); min-width: 260px; }
}

@media (max-width: 768px) {
    .art-title { font-size: 22px; }
    .art-header-card, .art-content-card { padding: 20px; }
    .art-meta { flex-direction: column; gap: 8px; }
    .art-meta-views { margin-left: 0; }
    .art-sidebar { flex-direction: column; }
    .art-widget { flex: 1 1 100%; min-width: auto; }
    .art-latest-item .art-latest-cover { width: 120px; height: 80px; }
    .art-latest-item .art-latest-summary { display: none; }
}

@media (max-width: 480px) {
    .art-container { padding: 12px; }
    .art-header-card, .art-content-card { padding: 16px; }
    .art-title { font-size: 20px; }
    .art-latest-item { flex-direction: column; }
    .art-latest-item .art-latest-cover { width: 100%; height: 160px; }
}

/* 知识库横幅 hover */
.art-kb-banner { transition: background 0.3s ease, box-shadow 0.3s ease; }
.art-kb-banner:hover { background: #E0EEFF !important; box-shadow: 0 2px 8px rgba(45, 122, 241, 0.1); }