/* ==========================================================================
   文章与知识库专用样式表 (article.css)
   ========================================================================== */

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

.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Breadcrumbs */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

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

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

/* Article Header */
.article-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.article-h1 {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 18px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

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

/* Summary Box */
.article-summary-box {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-left: 4px solid var(--accent-terracotta);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-sm);
}

.summary-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.summary-content {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Article Body Typography */
.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-main);
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text-main);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-card);
  position: relative;
}

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

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text-main);
}

.article-body p {
  margin-bottom: 18px;
  color: #383431;
}

.article-body ul, .article-body ol {
  margin: 14px 0 22px 24px;
  color: #383431;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body strong {
  font-weight: 600;
  color: var(--text-main);
}

/* Callout Box */
.article-callout {
  background: #FFF9F5;
  border: 1px solid #FCD3C1;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
}

.article-callout.tip {
  background: #F0FDF4;
  border-color: #BBF7D0;
}

.callout-title {
  font-weight: 700;
  color: var(--accent-terracotta);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.callout-tip-title {
  color: #15803D;
}

/* Article Tables */
.article-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  background: #FFF;
  font-size: 0.925rem;
}

.article-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-card);
  color: var(--text-main);
}

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

.article-table tr:last-child td {
  border-bottom: none;
}

/* Article Embedded CTA Box */
.article-inline-cta {
  background: linear-gradient(135deg, #1C1917 0%, #2A211D 100%);
  color: #FFF;
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 40px 0;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.article-inline-cta h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: #FFF;
  margin-bottom: 8px;
}

.article-inline-cta p {
  color: #D6D3D1;
  font-size: 0.95rem;
  max-width: 580px;
  margin: 0 auto 20px;
}

/* Article Navigation / Next */
.article-prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 48px 0 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.prev-next-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: all var(--transition-fast);
}

.prev-next-card:hover {
  border-color: var(--accent-terracotta);
  transform: translateY(-2px);
}

.prev-next-label {
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.prev-next-title {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-main);
}

@media (max-width: 768px) {
  .article-h1 {
    font-size: 1.85rem;
  }
  .article-prev-next {
    grid-template-columns: 1fr;
  }
}