.article-detail-card {
  border-radius: 22px; overflow: hidden;
  background: var(--surface-1-bg);
  border: 1px solid var(--surface-border);
  box-shadow: var(--surface-shadow-1);
}
.article-detail-cover {
  width: 100%;
  aspect-ratio: 21/9;
  object-fit: cover;
}
.article-cover-placeholder { aspect-ratio: 21/9; min-height: 180px; }
.article-detail-body { padding: 32px; }
.article-detail-title {
  font-size: 1.75rem; font-weight: 800;
  line-height: 1.35; letter-spacing: -0.5px;
  margin: 0 0 16px;
}
.article-detail-meta {
  display: flex; flex-wrap: wrap; gap: 16px;
  font-size: 13px; color: var(--text-tertiary);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--surface-border);
}
.article-detail-meta a { color: var(--text-tertiary); text-decoration: none; }
.article-detail-meta a:hover { color: var(--accent); }

.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--surface-border); }

.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.article-nav-card {
  display: block;
  width: 100%;
  padding: 16px; border-radius: 18px;
  background: var(--surface-1-bg);
  border: 1px solid var(--surface-border);
  box-shadow: var(--surface-shadow-2);
  text-decoration: none; color: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
}
.article-nav-card:hover { transform: translateY(-2px); box-shadow: var(--surface-shadow-1); }
.article-nav-card.right { text-align: right; }
.article-nav-label { font-size: 11px; color: var(--text-tertiary); display: block; margin-bottom: 4px; }
.article-nav-title {
  font-size: 14px; font-weight: 600; color: var(--text-primary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.article-aside-sticky { position: static; display: flex; flex-direction: column; gap: 16px; }
@media (max-width: 1023px) {
  .article-aside-sticky { display: none; }
}
@media (min-width: 1280px) {
  .article-aside-sticky { position: sticky; top: calc(var(--navbar-height) + 16px); }
}

.toc-card { border-radius: 18px; overflow: hidden; background: var(--surface-1-bg); border: 1px solid var(--surface-border); box-shadow: var(--surface-shadow-2); }
.toc-sticky { position: sticky; top: calc(var(--navbar-height) + 16px); }