/* ===================================================================
   SeeleCloud 希儿云 - 文章与技术知识库专用样式库 (article.css)
   专为 SEO 长文深度阅读优化，支持移动端自适应、侧边导航与高转化 CTA
   =================================================================== */

.article-page-wrap {
  position: relative;
  z-index: 2;
  padding: 40px 0 80px;
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

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

.breadcrumb a:hover {
  color: var(--accent-cyan);
}

.breadcrumb-sep {
  color: var(--border-subtle);
}

.breadcrumb-current {
  color: var(--accent-blue);
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 文章头部 */
.article-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 36px;
  margin-bottom: 40px;
}

.article-tags-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.article-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.article-tag.hot {
  background: rgba(244, 63, 94, 0.1);
  color: var(--accent-rose);
  border-color: rgba(244, 63, 94, 0.25);
}

.article-main-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  color: #ffffff;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 核心正文主体双栏布局 */
.article-container-layout {
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 48px;
  align-items: start;
}

/* 正文排版 */
.article-content {
  color: #cbd5e1;
  font-size: 16px;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: #ffffff;
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.article-content h2::before {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--gradient-brand);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: #ffffff;
  margin: 30px 0 14px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, 
.article-content ol {
  margin: 16px 0 24px 24px;
  padding-left: 8px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content strong {
  color: #ffffff;
  font-weight: 600;
}

/* 正文提示卡片 */
.callout {
  background: rgba(15, 23, 42, 0.7);
  border-left: 4px solid var(--accent-blue);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 28px 0;
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.callout.callout-warning {
  border-left-color: var(--accent-amber);
}

.callout.callout-success {
  border-left-color: var(--accent-green);
}

.callout-title {
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 正文表格 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14.5px;
}

.data-table th {
  background: rgba(30, 41, 59, 0.6);
  color: #ffffff;
  font-weight: 600;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* 正文内嵌高转化 CTA 卡片 */
.article-inline-cta {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.7) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  margin: 40px 0;
  text-align: center;
  box-shadow: var(--shadow-glow);
}

.article-inline-cta h3 {
  font-size: 22px;
  color: #ffffff;
  margin-bottom: 12px;
}

.article-inline-cta p {
  color: var(--text-muted);
  font-size: 14.5px;
  max-width: 600px;
  margin: 0 auto 24px;
}

/* 侧边栏 (Sidebar) */
.article-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.sidebar-widget-title {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.toc-list {
  list-style: none;
  font-size: 13.5px;
}

.toc-list li {
  margin-bottom: 10px;
}

.toc-list a {
  color: var(--text-muted);
  display: block;
  line-height: 1.5;
  transition: color var(--transition-fast);
}

.toc-list a:hover {
  color: var(--accent-cyan);
}

.sidebar-cta-box {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.8) 0%, rgba(30, 27, 75, 0.6) 100%);
  text-align: center;
}

.sidebar-cta-price {
  font-size: 32px;
  font-weight: 900;
  color: #ffffff;
  margin: 12px 0 16px;
}

/* 相关文章推荐网格 */
.related-articles-section {
  border-top: 1px solid var(--border-subtle);
  padding-top: 50px;
  margin-top: 60px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

/* 响应式适配 */
@media (max-width: 992px) {
  .article-container-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .article-main-title {
    font-size: 26px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
}