.bt-main{align-items:start}.bt-col{flex-direction:column;gap:14px;min-width:0;display:flex}.bt-step{flex-direction:column;gap:12px;display:flex}.bt-step h2.label{margin:0}.bt-name{overflow-wrap:anywhere}.bt-busy{align-items:center;gap:10px;font-size:13px;display:flex}.bt-busy .meter>i{background:var(--accent);transition:none}.bt-wave{background:var(--sunk);border:1.5px solid var(--line);border-radius:var(--radius);width:100%;height:72px;display:block}.bt-step input[type=range]{width:100%;accent-color:var(--accent)}.bt-tbtn .btn-row{flex-wrap:nowrap;gap:6px}.bt-media{grid-template-columns:repeat(auto-fill,minmax(76px,1fr));gap:8px;margin:0;padding:0;list-style:none;display:grid}.bt-media li{flex-direction:column;gap:4px;display:flex}.bt-thumb{aspect-ratio:1;border:1.5px solid var(--line);background:var(--sunk);border-radius:8px;display:block;position:relative;overflow:hidden}.bt-thumb img,.bt-thumb video{object-fit:cover;width:100%;height:100%;display:block}.bt-thumb b,.bt-thumb em{font-family:var(--f-mono);background:var(--ink);color:var(--surface);border-radius:6px;padding:2px 5px;font-size:11px;font-style:normal;line-height:1;position:absolute;top:3px}.bt-thumb b{left:3px}.bt-thumb em{right:3px}.bt-mbtns{justify-content:center;gap:4px;display:flex}.bt-stage{background:var(--board);border:2px solid var(--ink);border-radius:var(--radius);justify-content:center;padding:8px;display:flex;position:relative}.bt-stage canvas{background:#000;border-radius:6px;width:auto;max-width:100%;height:auto;max-height:min(62vh,560px);display:block}.bt-stage.wide canvas{width:100%;max-height:none}.bt-empty{text-align:center;color:#fff;justify-content:center;align-items:center;margin:0;padding:20px;font-size:14px;display:flex;position:absolute;inset:0}.bt-note{margin:0;font-size:13px}.bt-out{flex-direction:column;align-items:center;gap:10px;display:flex}.bt-out video{border-radius:var(--radius);background:#000;width:auto;max-width:100%;max-height:60vh}