/* /ortho, /obgyn and /<tenant>/<slug> public chapter pages.  DT_CHAPTERS_PUBLIC_V1 2026-09-10
   Loaded after board1405.css and reuses its tokens, top bar, hero, question card and wall. Same scales: one accent,
   radius 10px controls / 16px cards / 999px pills, 4px spacing grid, 44px tap targets. */
.ch-crumbs ol{list-style:none;margin:0 0 10px;padding:0;display:flex;flex-wrap:wrap;gap:4px;font-size:14px;font-weight:700;color:var(--muted)}
.ch-crumbs li+li::before{content:"/";margin-inline-end:4px;color:#9aa8c4}
.ch-crumbs a{display:inline-flex;align-items:center;min-height:32px;text-decoration:none;color:var(--ink-2)}
.ch-crumbs a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
.ch-en{margin:6px 0 0;color:var(--muted);font-size:15px;font-family:Tahoma,sans-serif;text-align:right}
.ch-facts{grid-template-columns:repeat(2,minmax(0,1fr));max-width:560px}
.ch-exams{margin:14px 0 0;font-size:15px;color:var(--ink-2)}.ch-exams span{font-weight:800;color:var(--ink)}
.ch-h2{margin:8px 0 14px;font-size:22px;font-weight:800;line-height:1.5}
.ch-h2 small{font-size:14px;color:var(--muted);font-weight:700;margin-inline-start:6px}
.ch-qt{margin:0;font-size:17px;font-weight:800}.ch-qt small{font-size:14px;color:var(--muted);font-weight:700}

/* explanation built from the QB lesson text */
.ch-lesson .ch-ltitle{margin:0 0 8px;font-size:18px;color:var(--ink);font-weight:800}
.ch-lesson h4{margin:12px 0 4px;font-size:16px;color:var(--ink);font-weight:800}
.ch-lesson p{margin:6px 0 0;background:none;border:0;padding:0}
.ch-lesson .ch-clin{margin-top:12px;background:var(--blue-tint);border-right:3px solid var(--blue);border-radius:8px;padding:10px 12px}
.ch-lesson .ch-src{margin-top:10px;font-size:14px;color:var(--muted)}
.ch-qpin{background:#fff4d6;color:#6b4700;border-radius:6px;padding:0 6px;font-weight:800;font-size:14px;white-space:nowrap}

/* what else the chapter holds */
.ch-more{margin:28px 0 8px}
.ch-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.ch-item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.ch-item>.bx-ic{margin-top:6px;color:var(--muted)}
.ch-item.is-open>.bx-ic{color:var(--blue)}
.ch-item>div{flex:1;min-width:0}
.ch-item h3{margin:0;font-size:17px;font-weight:800;line-height:1.7}
.ch-item p{margin:2px 0 0;color:var(--ink-2);font-size:15px}
.ch-frame-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin-top:10px}
.ch-frame-btn{min-height:44px;padding:0 18px;border:1px solid var(--blue);border-radius:10px;background:#fff;color:var(--blue);font-weight:800}
.ch-frame-btn[aria-expanded=true]{background:var(--blue);color:#fff}
.ch-frame-link{display:inline-flex;align-items:center;min-height:44px;color:var(--ink-2);font-weight:700;font-size:15px;text-underline-offset:4px}
.ch-frame{margin-top:12px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#f3f6fb}
.ch-frame iframe{display:block;width:100%;height:min(78vh,900px);border:0;background:#fff}
.ch-frame-wait{margin:0;padding:24px;text-align:center;color:var(--muted);font-weight:700}

/* previous / next chapter */
.ch-pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0 40px}
.ch-pager a{display:flex;flex-direction:column;gap:2px;min-height:64px;padding:12px 16px;border:1px solid var(--line);border-radius:16px;background:#fff;text-decoration:none}
.ch-pager a[rel=next]{text-align:left;grid-column:2}
.ch-pager a:hover{border-color:var(--blue)}
.ch-pager small{font-size:13px;color:var(--muted);font-weight:700}.ch-pager span{font-weight:800;color:var(--ink);line-height:1.6}

/* index */
.ch-index{padding-block:20px 8px}
.ch-feature{list-style:none;margin:0 0 20px;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.ch-feature a{display:flex;flex-direction:column;gap:2px;min-height:72px;padding:14px 16px;border:1px solid #bcd0ff;border-radius:16px;background:var(--blue-tint);text-decoration:none}
.ch-feature a:hover{border-color:var(--blue)}
.ch-feature b{color:var(--ink);font-weight:800}.ch-feature span{font-size:14px;color:var(--ink-2);font-weight:700}
.ch-jump{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}
.ch-jump a{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid #cdd9f2;border-radius:999px;background:#fff;text-decoration:none;font-weight:700;color:var(--ink-2);font-size:15px}
.ch-jump a:hover{border-color:var(--blue);color:var(--blue)}
.ch-group{margin:0 0 28px}
.ch-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.ch-grid a{display:flex;flex-direction:column;gap:4px;height:100%;min-height:96px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff;text-decoration:none}
.ch-grid a:hover{border-color:var(--blue)}
.ch-grid b{font-weight:800;color:var(--ink);line-height:1.6}
.ch-card-book{font-size:13px;font-weight:800;color:var(--blue)}
.ch-card-n{margin-top:auto;font-size:13px;color:var(--muted);font-weight:700;font-variant-numeric:tabular-nums}
.ch-btn-quiet{background:#fff;color:var(--blue);border:1px solid var(--blue)}.ch-btn-quiet:hover{background:var(--blue-tint)}
.bx-foot span a{font-weight:700;color:var(--ink-2)}

@media(max-width:700px){
  .ch-pager{grid-template-columns:1fr}.ch-pager a[rel=next]{grid-column:auto;text-align:right}
  .ch-item{padding:14px}
}