/* Topic pages (/uroki/…, /lessons/…): on top of seo.css. */
.crumbs{font-size:14px;color:var(--muted);margin:4px 0 0}
.crumbs a{font-weight:600}
.fr{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;line-height:1.05;margin:0 .12em;font-size:.92em}
.fr span:first-child{border-bottom:1.5px solid currentColor;padding:0 .15em}
.lesson{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px 24px;margin:18px 0}
.lesson h2{margin-top:.4em}
.lesson ol.steps{padding-left:1.3em}
.lesson ol.steps li{margin:.25em 0;font-variant-numeric:tabular-nums}
.rule{background:#f3f0ff;border-left:5px solid var(--accent);border-radius:10px;padding:12px 16px;margin:12px 0;font-weight:600}
.worked{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:12px 0}
.worked .card p{margin:.3em 0}
.worked .q{font-size:20px;font-weight:750;font-variant-numeric:tabular-nums}
.worked ol{margin:.4em 0 0;padding-left:1.2em;font-size:15px;color:var(--muted)}
/* trainer */
.trainer{background:#fff;border:2px solid var(--accent);border-radius:22px;padding:20px 22px;margin:22px 0}
.tr-list{list-style:decimal;padding-left:1.6em;margin:8px 0;columns:2 300px;column-gap:28px}
.tr-list li{break-inside:avoid;margin:0 0 12px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-variant-numeric:tabular-nums}
.tr-list li::marker{color:var(--muted)}
.tr-q{font-size:19px;font-weight:650}
.tr-eq{color:var(--muted)}
.tr-list input[type=text]{width:120px;font:inherit;font-size:18px;padding:7px 10px;border:1.5px solid var(--line);border-radius:10px}
.tr-list input[type=text]:focus{outline:2px solid var(--accent);border-color:var(--accent)}
.tr-res{font-size:14px;width:100%}
.tr-list li.ok .tr-res{color:var(--ok)} .tr-list li.bad .tr-res{color:#c92a2a}
.tr-list li.ok input{border-color:var(--ok);background:#ebfbee} .tr-list li.bad input{border-color:#e03131;background:#fff5f5}
.tr-quiz{display:block!important} .tr-quiz .tr-q{display:block;margin-bottom:6px}
.tr-opts{display:flex;flex-wrap:wrap;gap:8px 16px} .tr-opts label{cursor:pointer}
.tr-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.btn.ghost{background:#fff;color:var(--accent-d);border:1.5px solid var(--accent)}
.btn.ghost:hover{background:#f3f0ff}
.tr-score{font-weight:800;font-size:18px;color:var(--accent-d);min-height:1.4em;margin:6px 0}
.examples table.ex td:first-child{white-space:nowrap}
.hub-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin:14px 0}
.hub-list a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;font-weight:700}
.hub-list a small{display:block;color:var(--muted);font-weight:500;margin-top:3px}
.next-prev{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:18px 0}
#print-sheet{display:none}
@media print{
  body>*:not(#print-sheet){display:none!important}
  #print-sheet{display:block}
  .pr-card{border:1px solid #999;border-radius:8px;padding:10px 14px;margin:0 0 12px;break-inside:avoid}
  .pr-card header{display:flex;justify-content:space-between;font-size:14px}
  .pr-card ol{columns:2;font-size:16px;line-height:2.1}
  .pr-keys{break-before:page;font-size:13px} .pr-keys ol{columns:3}
}