/* ==========================================================================
   文章专页排版样式 (High-End Editorial Article Typography)
   ========================================================================== */

.article-hero {
  padding-top: 130px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.article-breadcrumbs a:hover {
  color: var(--text-primary);
}

.article-breadcrumbs span {
  color: var(--text-faint);
}

.article-main-title {
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.25;
  margin-bottom: 24px;
  max-width: 960px;
}

.article-meta-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-meta-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  padding: 64px 0 96px 0;
  align-items: start;
}

.article-content {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 1.6rem;
  margin: 44px 0 18px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 32px 0 14px 0;
}

.article-content p {
  margin-bottom: 22px;
}

.article-content ul, .article-content ol {
  margin: 18px 0 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-content li {
  line-height: 1.7;
}

.article-content strong {
  color: var(--text-primary);
}

.article-callout {
  padding: 20px 24px;
  margin: 28px 0;
  background: var(--bg-card);
  border-left: 3px solid var(--gold-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-callout-title {
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.article-table th {
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 16px;
  font-family: var(--font-mono);
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}

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

.article-code-block {
  background: #050507;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 18px;
  margin: 24px 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  overflow-x: auto;
  color: #e4e4e7;
}

/* 侧边栏与目录索引 */
.article-sidebar {
  position: sticky;
  top: 100px;
}

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

.toc-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.84rem;
}

.toc-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  display: block;
}

.toc-link:hover, .toc-link.active {
  color: var(--gold-light);
  padding-left: 4px;
}

.article-cta-box {
  margin-top: 24px;
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.08) 0%, rgba(18, 19, 26, 0.9) 100%);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.article-cta-box h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.article-cta-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gold-primary);
  z-index: 1000;
  transition: width 0.1s ease;
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .article-sidebar {
    position: static;
  }
}