/* article-t2.css - 双栏结构，右侧粘性信息卡 */
.article-wrapper { display: grid; grid-template-columns: 1fr 280px; gap: var(--space-lg); }
.article-body { padding: var(--space-lg); }
.sidebar-card { position: sticky; top: 80px; height: fit-content; background:#fff; border-radius: var(--radius-card); padding: var(--space-md); box-shadow: 0 2px 6px rgba(0,0,0,0.05); }
@media (max-width: 768px) {
  .article-wrapper { grid-template-columns: 1fr; }
  .sidebar-card { position: static; order: 2; }
}