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solid var(--line);background:#f7f9ff;border-radius:12px;padding:10px 13px;font-weight:800;color:var(--ink)}.memory{margin:20px 0;padding:17px;border-radius:17px;background:linear-gradient(135deg,#f1efff,#eefaff)}.memory small{color:var(--violet);font-weight:900}.memory b{display:block;margin:6px 0}.memory p{color:var(--muted);font-size:13px;line-height:1.55;margin:0}.examples{display:grid;gap:10px}.example{border-top:1px solid var(--line);padding-top:10px}.example b,.example span{display:block;line-height:1.45}.example span{color:var(--muted);font-size:12px;margin-top:2px}.lesson-actions{display:flex;justify-content:space-between;gap:8px;margin-top:20px}.lesson-actions button{border:1px solid var(--line);background:white;border-radius:12px;padding:11px;font-weight:800}.lesson-actions 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