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button{padding:8px 15px;border-radius:9px;font-size:12.5px;font-weight:500;color:var(--text-2);text-transform:capitalize;transition:color .16s var(--ease),background .16s var(--ease)}.seg button:hover{color:#fff}.seg button.on{background:var(--grad);color:#fff;box-shadow:inset 0 1px 0 hsla(0,0%,100%,.18)}.steps{display:flex;align-items:center;gap:10px;margin-bottom:20px;flex-wrap:wrap}.step{gap:8px;font-size:12.5px;color:var(--text-3)}.step,.step .n{display:inline-flex;align-items:center}.step .n{width:23px;height:23px;border-radius:50%;justify-content:center;font-size:11px;font-weight:700;font-family:var(--mono);border:1px solid var(--border);background:var(--surface-1)}.step.on{color:#fff}.step.on .n{background:var(--grad);border-color:transparent}.step.done .n{background:rgba(52,211,153,.14);color:var(--ok);border-color:rgba(52,211,153,.3)}.step-sep{flex:1 1 18px;max-width:34px;height:1px;background:var(--border)}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}@media (max-width:620px){.grid-2{grid-template-columns:1fr}}@media (max-width:520px){.row{flex-wrap:wrap;row-gap:6px}.row-actions{margin-left:auto}.acc-head{padding:12px 13px;gap:9px}.editor-panel,.sub-panel{padding:12px}}@media (max-width:1040px){.player-grid{grid-template-columns:1fr}.playlist-col{position:static}.pl-list{max-height:none}}@media (max-width:680px){.lh-actions{margin-left:0;width:100%;margin-top:12px}.lesson-head .lh-top{flex-wrap:wrap}.tabs{overflow-x:auto}}