/* Categories index page [bs_categories_index] — pages 1788/1795/1799.
 * Brand: #1DB0E1 blue, #111318 text, #e4e7ed border. Dark mode: html.bs-dark.
 * Zero-JS, CLS-safe (aspect-ratio reserves + img width/height). No !important,
 * no left-accent borders. */

.bs-cidx{max-width:1100px;margin:0 auto;padding:8px 20px 32px}
.bs-cidx__head{margin:0 0 20px}
.bs-cidx__h1{font-size:30px;line-height:1.2;margin:0 0 8px;color:#111318}
.bs-cidx__intro{font-size:16px;line-height:1.5;color:#6b7280;margin:0;max-width:760px}

.bs-cidx__cat{padding:20px 0;border-bottom:.5px solid #e4e7ed}
.bs-cidx__cat:last-child{border-bottom:0}
.bs-cidx__cathead{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.bs-cidx__catname{font-size:20px;line-height:1.25;margin:0}
.bs-cidx__catname a{display:inline-flex;align-items:center;gap:8px;color:#111318;text-decoration:none}
.bs-cidx__catname a:hover{color:#1DB0E1}
.bs-cidx__icon{display:inline-flex;width:22px;height:22px;color:#1DB0E1;flex:0 0 auto}
.bs-cidx__icon svg{width:22px;height:22px}
.bs-cidx__viewall{font-size:14px;font-weight:600;color:#1DB0E1;text-decoration:none;white-space:nowrap}
.bs-cidx__viewall:hover{color:#206389}
.bs-cidx__catsub{font-size:14px;line-height:1.45;color:#6b7280;margin:6px 0 0;max-width:760px}

.bs-cidx__cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:14px}
.bs-cidx__card{display:flex;flex-direction:column;text-decoration:none;color:inherit;border:.5px solid #e4e7ed;border-radius:10px;overflow:hidden;background:#fff;transition:box-shadow .15s ease}
.bs-cidx__card:hover{box-shadow:0 4px 14px rgba(17,19,24,.08)}
.bs-cidx__thumb{position:relative;display:block;aspect-ratio:16/9;background:#f3f4f6;overflow:hidden}
.bs-cidx__thumb img{width:100%;height:100%;object-fit:cover;display:block}
.bs-cidx__thumb-ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#9ca3af;background:#eef2f6}
.bs-cidx__thumb-ph svg{width:34px;height:34px}
.bs-cidx__title{font-size:15px;line-height:1.35;font-weight:600;color:#111318;margin:10px 12px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bs-cidx__card:hover .bs-cidx__title{color:#1DB0E1}
.bs-cidx__date{font-size:12px;color:#9ca3af;margin:6px 12px 12px}

@media (max-width:599px){
  .bs-cidx__cards{grid-template-columns:1fr}
  .bs-cidx__h1{font-size:24px}
}

/* Dark mode */
html.bs-dark .bs-cidx__h1,
html.bs-dark .bs-cidx__catname a,
html.bs-dark .bs-cidx__title{color:#fff}
html.bs-dark .bs-cidx__intro,
html.bs-dark .bs-cidx__catsub{color:#a8a8b3}
html.bs-dark .bs-cidx__cat{border-bottom-color:#2a2a32}
html.bs-dark .bs-cidx__card{background:#1a1a1f;border-color:#2a2a32}
html.bs-dark .bs-cidx__thumb{background:#23232b}
html.bs-dark .bs-cidx__thumb-ph{background:#23232b;color:#5b5b66}
html.bs-dark .bs-cidx__date{color:#6b7280}
html.bs-dark .bs-cidx__catname a:hover,
html.bs-dark .bs-cidx__card:hover .bs-cidx__title{color:#5fd3f7}
html.bs-dark .bs-cidx__viewall{color:#5fd3f7}