.topic-group{border-top:1px solid var(--db-line);padding:12px 0;scroll-margin-top:24px}
.topic-group>summary{display:flex;align-items:center;gap:14px;min-height:48px;cursor:pointer;font-size:20px;font-weight:700;list-style:disclosure-closed}
.topic-count{margin-left:auto;font:400 14px/1.4 Arial,sans-serif;color:#586159}
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:16px 0 12px}
.topic-card{min-width:0;background:white;border:1px solid var(--db-line);border-radius:6px;padding:20px;scroll-margin-top:24px}
.topic-card h3{font:400 24px/1.2 Georgia,serif;margin:0 0 12px}
.topic-card p{font-size:15px;line-height:1.6;color:#505b51;margin:8px 0 14px}
.topic-actions{display:flex;flex-wrap:wrap;gap:2px 14px}
.topic-actions a{display:inline-flex;align-items:center;min-height:44px;font-size:15px}
.topic-check{border-top:1px solid var(--db-line);margin-top:12px;padding-top:5px}
.topic-check summary{min-height:44px;display:flex;align-items:center;gap:5px;cursor:pointer;font-size:15px}
.topic-card .topic-source{font-size:13px}
.topic-search{display:block;max-width:620px;margin:20px 0}
.topic-search input{display:block;box-sizing:border-box;width:100%;margin-top:6px;padding:12px;border:1px solid #9ca99c;border-radius:6px;font:inherit;background:#fff;color:var(--db-ink)}
.icon-specimens{display:flex;flex-wrap:wrap;gap:16px;margin:22px 0}
.icon-specimens figure{display:grid;justify-items:center;gap:12px;min-width:90px;padding:18px;margin:0;border:1px solid var(--db-line);border-radius:6px;background:white}
.icon-specimens img{width:36px;height:36px;display:block}
.icon-specimens figcaption{font-size:14px;color:#3e5043}
.resource-line{padding:14px 0;border-top:1px solid var(--db-line)}
.resource-line a{display:inline-flex;align-items:center;min-height:44px;margin-right:20px}
.topic-status{color:#586159;font-size:15px}
.topic-reader{width:min(940px,calc(100% - 32px));max-height:86vh;box-sizing:border-box;padding:0;border:1px solid #a4afa3;border-radius:8px;background:#f7f7f2;color:#202920}
.topic-reader::backdrop{background:#152119aa}
.topic-reader-bar{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;background:#f7f7f2;border-bottom:1px solid #d9ded4}
.topic-reader-bar h2{font:400 24px/1.2 Georgia,serif;margin:0}
.topic-reader-bar button{min-width:100px;min-height:44px;padding:8px 12px;flex-shrink:0;border:1px solid #9ca99c;border-radius:6px;background:#fff;color:#202920;font:inherit;cursor:pointer}
.topic-reader-source{padding:20px;margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.6 ui-monospace,Consolas,monospace}
.topic-reader :focus-visible{outline:3px solid #3c7352;outline-offset:3px}
@media(max-width:1120px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.topic-grid{grid-template-columns:1fr}.topic-card{padding:18px}.topic-group>summary{font-size:18px}.icon-specimens{gap:10px}.icon-specimens figure{min-width:75px;padding:14px}}