.chapter-map-board{gap:12px;min-width:0;display:grid}.chapter-map-board p{font-size:var(--text-body);margin:0;line-height:1.7}.chapter-map-overview{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.chapter-map-overview section{border:1px solid var(--line);border-radius:var(--radius-small);background:var(--surface);padding:12px}.chapter-map-overview h3{font-size:var(--text-body);margin:0 0 8px}.chapter-map-overview ul{font-size:var(--text-body);margin:0;padding-left:1.25em;line-height:1.65}.chapter-connection{justify-items:center;gap:0;min-width:0;display:grid}.chapter-node{box-sizing:border-box;border:2px solid var(--diagram-first);border-radius:var(--radius-small);background:var(--surface);gap:4px;width:min(100%,440px);padding:10px 12px;display:grid}.chapter-node span{font-size:var(--text-support);color:var(--muted)}.chapter-node strong{font-size:var(--text-body)}.chapter-target{border-style:dashed}.chapter-arrived{background:var(--surface-soft);border-style:solid}.chapter-connection>svg{width:64px;height:64px;display:block;overflow:visible}.chapter-arrow-track{fill:none;stroke:var(--line);stroke-width:2px;stroke-dasharray:4 4}.chapter-arrow{fill:none;stroke:var(--diagram-first);stroke-width:4px;stroke-linecap:round;stroke-linejoin:round}.chapter-map-board .chapter-reason{border-left:4px solid var(--diagram-first);background:var(--surface-soft);box-sizing:border-box;width:100%;margin-top:10px;padding:8px 12px}.chapter-equation{overflow-wrap:anywhere;font-weight:700}.chapter-example-result{border:1px solid var(--line);border-radius:var(--radius-small);background:var(--surface);gap:8px;padding:12px;display:grid}.chapter-example-prompt{gap:8px;display:grid}.chapter-choices{flex-wrap:wrap;gap:8px;display:flex}.chapter-choices button{border:1px solid var(--line-strong);border-radius:var(--radius-small);background:var(--surface);max-width:100%;min-height:44px;color:var(--ink);font:inherit;font-size:var(--text-body);text-align:left;padding:8px 12px}.chapter-choices button[aria-pressed=true]{border:2px solid var(--diagram-first);background:var(--surface-soft)}.chapter-choices button:focus-visible{outline:3px solid var(--diagram-third);outline-offset:2px}.chapter-map-board details>summary{font-size:var(--text-body);align-content:center;min-height:44px}.chapter-map-board details[open]>div{margin-top:12px}.chapter-pattern{width:min(100%,320px);margin:auto;display:block}.chapter-counter{fill:var(--surface);stroke:var(--diagram-first);stroke-width:2px}.chapter-center{fill:var(--diagram-first);stroke:var(--diagram-first);stroke-width:2px}.chapter-pattern text{font-family:var(--font-body);fill:var(--ink);text-anchor:middle;font-size:16px}.chapter-map-static .mind-map-node,.chapter-map-static .mind-map-branch h3,.chapter-map-static .mind-map-root{font-size:var(--text-body)}.chapter-map-static .mind-map-note,.chapter-map-static .mind-map figcaption{font-size:var(--text-support)}.chapter-map-static figure{margin-inline:0}.chapter-relations{font-size:var(--text-body);line-height:1.7}.chapter-relations li+li{margin-top:10px}.chapter-map-static figcaption{font-size:var(--text-support);color:var(--muted);line-height:1.6}@media (width<=440px){.chapter-map-overview{grid-template-columns:1fr}.chapter-node{padding:8px 10px}.chapter-map-board .chapter-reason{padding:8px}.chapter-choices button{flex:100%}}