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solid var(--border-strong);width:24px;height:20px;color:var(--text-dim);border-radius:4px;place-items:center;padding:0;font-size:11px;font-weight:700;display:grid}.th-btn:hover{color:var(--text)}.th-mute[aria-pressed=true]{background:var(--mute);border-color:var(--mute);color:#1a1405}.th-solo[aria-pressed=true]{background:var(--solo);border-color:var(--solo);color:#04121f}.th-arm[aria-pressed=true]{background:var(--rec);border-color:var(--rec);color:#fff}.th-type{text-transform:uppercase;letter-spacing:.08em;color:var(--text-faint);margin-left:auto;font-size:10px}.th-delete{background:0 0;border-color:#0000;margin-left:2px}.th-delete:hover{color:var(--danger);background:var(--panel-3)}.th-picker{z-index:20;background:var(--panel-2);border:1px solid var(--border-strong);border-radius:8px;flex-direction:column;gap:6px;padding:8px 10px 10px;display:flex;position:absolute;top:calc(100% - 8px);left:8px;box-shadow:0 10px 30px 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var(--border);flex:none;position:relative;overflow:hidden}.track-lane:before{content:"";background:var(--track-color);opacity:.07;pointer-events:none;position:absolute;inset:0}.track-lane:after{content:"";background:var(--track-color);opacity:.8;width:3px;position:absolute;top:0;bottom:0;left:0}.track-lane.is-silenced{opacity:.45}.track-lane.is-recording:before{background:var(--rec);opacity:.12}.lane-clips{position:absolute;inset:0}.lane-tag{letter-spacing:.06em;text-transform:uppercase;color:color-mix(in srgb, var(--track-color) 70%, #fff);opacity:.55;pointer-events:none;align-items:center;gap:6px;font-size:10.5px;font-weight:600;display:inline-flex;position:absolute;top:6px;left:12px}.track-lane.is-recording .lane-tag{color:var(--rec);opacity:1}.timeline-fill{flex:1;min-height:0;position:relative}.timeline-empty{left:calc(var(--header-w) + 20px);color:var(--text-dim);margin:28px 0 0;display:inline-block;position:sticky}.playhead{pointer-events:none;will-change:transform;width:0;position:absolute;top:0;left:0}.playhead:before{content:"";background:#fff;width:2px;position:absolute;top:0;bottom:0;left:-1px;box-shadow:0 0 6px #ffffff73}.playhead-line{z-index:4;bottom:0}.playhead-head{z-index:2;height:100%}.playhead-head:after{content:"";border-top:9px solid #fff;border-left:6px solid #0000;border-right:6px solid #0000;position:absolute;top:0;left:-6px}@media (width<=720px){.studio{--header-w:172px;--track-h:62px}.tb-brand,.tb-sep,.tb-label{display:none}.tb-btn{padding:0 8px}.tb-btn-accent .tb-label{display:inline}.studio-transport{gap:8px 12px;padding:8px}.tp-field-label,.tp-unit,.th-type,.tp-status{display:none}.tp-readout{min-width:100px}.add-btn{gap:2px;font-size:0}.add-btn svg{width:14px;height:14px}.th-icon{width:28px;height:28px}.th-controls{gap:3px}}.clip{background:color-mix(in srgb, var(--track-color) 30%, #101015);border:1px solid color-mix(in srgb, 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12px;font-size:12.5px;font-weight:600;display:inline-flex}.tp-demo:hover:not(:disabled){background:#7c7cf540}.tp-demo:disabled{opacity:.5;cursor:default;border-color:var(--border-strong);color:var(--text-dim);background:0 0}.meter{background:var(--bg);border:1px solid var(--border-strong);border-radius:4px;width:70px;height:8px;overflow:hidden}.meter-bar{background:linear-gradient(90deg, #34c3a0, #e6b84a 75%, var(--rec));width:0;height:100%}@media (width<=720px){.meter{width:44px}}