/* Catalog — dense product-grid, compact */
[data-theme="catalog"] { --cacc: #3c6382; --cdark: #0a3d62; }
[data-theme="catalog"] body { background: #f5f7fa; font-family: "Inter", -apple-system, sans-serif; color: #1a2733; }
[data-theme="catalog"] .site-header { background: #fff; box-shadow: 0 1px 0 #dde3ec; }
[data-theme="catalog"] .nav-links a, [data-theme="catalog"] .nav-logo-text { color: var(--cdark); font-weight: 500; font-size: 0.88rem; }
[data-theme="catalog"] .hero { background-color: var(--cdark); padding: 50px 0; min-height: 220px; }
[data-theme="catalog"] .hero h1 { color: #fff; font-size: 2.1rem; }
[data-theme="catalog"] .hero-tagline { color: #cfdbe6; font-size: 1rem; }
[data-theme="catalog"] .btn-primary { background: var(--cacc); border-radius: 4px; font-weight: 600; padding: 8px 18px; }
[data-theme="catalog"] .card-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
[data-theme="catalog"] .card { padding: 0; border-radius: 6px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); border: 1px solid #e7ebf1; overflow: hidden; }
[data-theme="catalog"] .card-img { border-radius: 0; aspect-ratio: 16/10; }
[data-theme="catalog"] .card-body { padding: 12px 14px; }
[data-theme="catalog"] .card-title { font-size: 0.95rem; line-height: 1.35; margin: 6px 0; }
[data-theme="catalog"] .card-excerpt { font-size: 0.83rem; color: #5a6577; }
[data-theme="catalog"] .badge { background: #e3edf6; color: var(--cdark); font-size: 0.7rem; }
[data-theme="catalog"] .section-title { font-size: 1.4rem; color: var(--cdark); font-weight: 700; }
[data-theme="catalog"] .article-body { font-size: 0.98rem; line-height: 1.7; }
[data-theme="catalog"] .filter-btn { padding: 5px 10px; font-size: 0.8rem; }
[data-theme="catalog"] .site-footer { background: #fff; color: #5a6577; border-top: 1px solid #dde3ec; }