.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;align-items:stretch}.lesson-count{font-size:13px;color:var(--muted);border:1px solid var(--line);padding:6px 14px;border-radius:30px}.lesson-card{min-width:0;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 4px 18px #00000004;transition:box-shadow .2s,border-color .2s}.lesson-card:hover,.lesson-card:focus-within{border-color:var(--gold);box-shadow:var(--shadow)}.lesson-video{position:relative;aspect-ratio:16/9;background:#102b3f}.lesson-video iframe{display:block;width:100%;height:100%;border:0;position:absolute;inset:0}.lesson-body{padding:24px;display:flex;flex-direction:column;flex:1}.lesson-body h3{font-size:19px;line-height:1.65;margin:10px 0 24px;overflow-wrap:anywhere}.lesson-footer{display:flex;align-items:center;justify-content:space-between;gap:14px;border-top:1px solid var(--line);padding-top:18px;margin-top:auto}.lesson-teacher{display:flex;gap:10px;align-items:center;min-width:0;font-size:13px;line-height:1.5;overflow-wrap:anywhere}.lesson-teacher small{display:block;font-size:9px;letter-spacing:.12em;color:var(--muted);margin-bottom:4px}.teacher-mark{display:grid;place-items:center;flex-shrink:0;width:34px;height:34px;border-radius:50%;background:var(--bg);color:var(--gold)}.lesson-open{font-size:12px;font-weight:650;white-space:nowrap;color:var(--gold)}.lesson-grid>.empty{grid-column:1/-1}@media(max-width:1050px){.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}}@media(max-width:620px){.lesson-grid{grid-template-columns:1fr}.lesson-body{padding:22px}.lesson-body h3{font-size:18px}}@media(prefers-reduced-motion:reduce){.lesson-card{transition:none}}