/* ==========================================================================
   文章详情页排版与增强样式 (Article Layout & Typography)
   ========================================================================== */

.article-page {
  padding: 40px 0 80px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 25px;
  flex-wrap: wrap;
}

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

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

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.article-main {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 45px 50px;
  box-shadow: var(--shadow-sm);
}

.article-header {
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 25px;
  margin-bottom: 30px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

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

.article-h1 {
  font-size: 2.2rem;
  line-height: 1.35;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.article-lead {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.7;
  background: var(--primary-bg);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
}

/* 正文排版 */
.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #334155;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 45px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid #f1f5f9;
  position: relative;
}

.article-body h2::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--primary);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 30px 0 14px;
}

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

.article-body ul, .article-body ol {
  margin: 15px 0 25px 22px;
}

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

.article-body strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* 强调提示块 */
.alert-box {
  padding: 18px 22px;
  border-radius: var(--radius-md);
  margin: 25px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 0.96rem;
  line-height: 1.65;
}

.alert-tip {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
}

.alert-warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-info {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e40af;
}

.alert-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* 数据表格 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 25px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.article-table th {
  background: #f8fafc;
  padding: 12px 16px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-color);
}

.article-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-secondary);
}

.article-table tr:hover td {
  background: #f8fafc;
}

/* 正文内转化推荐卡 */
.in-article-cta {
  background: linear-gradient(135deg, #eef2ff 0%, #e0f2fe 100%);
  border: 1px solid #c7d2fe;
  border-radius: var(--radius-lg);
  padding: 26px 30px;
  margin: 35px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.in-article-cta-text h4 {
  font-size: 1.25rem;
  font-weight: 800;
  color: #1e1b4b;
  margin-bottom: 6px;
}

.in-article-cta-text p {
  margin-bottom: 0;
  font-size: 0.92rem;
  color: #3730a3;
}

/* 文章侧边栏 */
.article-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.88rem;
}

.toc-link {
  color: var(--text-secondary);
  display: block;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.toc-link:hover, .toc-link.active {
  color: var(--primary);
  background: var(--primary-bg);
  padding-left: 12px;
}

.related-articles-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-item {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  transition: all var(--transition-fast);
}

.related-item:hover {
  background: var(--primary-bg);
}

.related-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 4px;
}

.related-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .article-main {
    padding: 30px 22px;
  }
  .in-article-cta {
    flex-direction: column;
    text-align: center;
  }
}