:root{--bg:#14171c;--panel:#1c2027;--line:#2b313b;--text:#d8dee9;--dim:#7b8794;--accent:#5ac8fa;--accent-dim:#2b6f8a;--sel:#5ac8fa29;--playhead:#ff6b6b}*{box-sizing:border-box}[hidden]{display:none!important}html,body{background:var(--bg);height:100%;color:var(--text);margin:0;font:13px/1.5 system-ui,-apple-system,Noto Sans TC,sans-serif;overflow:hidden}body{flex-direction:column;display:flex}header{background:var(--panel);border-bottom:1px solid var(--line);flex:none;align-items:center;gap:12px;padding:10px 16px;display:flex}h1{letter-spacing:.5px;color:var(--accent);white-space:nowrap;margin:0;font-size:15px}h1 a{color:inherit;text-decoration:none}h1 a:hover .by{color:var(--text)}h1 .by{color:var(--dim);letter-spacing:0;font-size:11px;font-weight:400}button.icon{text-align:center;min-width:34px;padding:5px 8px}.spacer{flex:1}header button,header .file,header .modes,header .transport{white-space:nowrap;flex:none}#status,#hint{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}button,.file{color:var(--text);border:1px solid var(--line);font:inherit;cursor:pointer;background:#262c35;border-radius:5px;padding:5px 12px}button:hover:not(:disabled),.file:hover{background:#303845}button:disabled{opacity:.4;cursor:default}.file input{display:none}.transport{align-items:center;gap:8px;display:flex}#clock{font-variant-numeric:tabular-nums;color:var(--dim);min-width:74px}#status{color:var(--dim)}#hint{color:var(--accent);text-align:right;flex:0 auto}main{grid-template-rows:1fr 18px 6px var(--wave-h,150px) 6px var(--ref-h,60px);flex:1;min-height:0;display:grid}#wave-splitter,#ref-splitter{cursor:row-resize;background:var(--line)}#wave-splitter:hover,#ref-splitter:hover{background:var(--accent-dim)}#bg-bar{color:var(--dim);background:#171b21cc;border-radius:4px;align-items:center;gap:4px;padding:2px 6px;font-size:11px;display:flex;position:absolute;top:4px;left:6px}#bg-bar button,#bg-bar .file{padding:1px 6px;font-size:11px}#bg-controls{align-items:center;gap:4px;display:flex}#bg-controls[hidden]{display:none}#bg-name{text-overflow:ellipsis;white-space:nowrap;max-width:180px;overflow:hidden}#bg-vol{width:80px}#bg-offset{width:60px}#bg-mute.on{color:#ff6b6b;border-color:#ff6b6b}#amp-zoom,#ref-amp-zoom{writing-mode:vertical-lr;width:14px;height:calc(100% - 8px);max-height:160px;accent-color:var(--accent);opacity:.35;direction:rtl;margin:0;transition:opacity .15s;position:absolute;top:4px;right:0}#amp-zoom:hover,#amp-zoom:active,#ref-amp-zoom:hover,#ref-amp-zoom:active{opacity:1}.track{border-bottom:1px solid var(--line);position:relative;overflow:hidden}.track canvas{width:calc(100% - 14px);height:100%;display:block;position:absolute;top:0;left:0}#drop-hint{border:2px dashed var(--accent);color:var(--accent);z-index:10;background:#14171ce6;place-items:center;font-size:20px;display:none;position:fixed;inset:0}body.dragging #drop-hint{display:grid}#pitch-track{flex-direction:column;display:flex}#pitch-toolbar{background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:nowrap;flex:none;justify-content:space-between;align-items:flex-start;gap:4px 12px;padding:3px 8px;display:flex}#pianoroll-wrap{flex:1;min-height:0;position:relative}#pianoroll-wrap canvas{width:calc(100% - 14px);height:100%;display:block;position:absolute;top:0;left:0}#panel{white-space:nowrap;flex-flow:wrap;flex:auto;align-items:center;gap:4px 14px;min-width:0;font-size:12px;display:flex}#panel .group{align-items:center;gap:6px;display:flex}#panel label{color:var(--dim)}#panel output{color:var(--accent);font-variant-numeric:tabular-nums;min-width:62px;font-size:12px}#panel input[type=range]{width:110px;accent-color:var(--accent)}.sel-info{color:var(--text);font-variant-numeric:tabular-nums}#panel button{padding:1px 7px;font-size:11px}#lane-bar{flex:none;align-items:center;gap:12px;margin-left:auto;display:flex}#lane-bar .tools,#lane-bar .lane-chips{align-items:center;gap:4px;display:flex}#lane-bar button{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#1c2027d9;padding:2px 8px;font-size:11px}#lane-bar button.on{border-color:var(--accent);color:var(--accent)}.lane-chip{border:1px solid var(--line);background:#1c2027d9;border-radius:5px;align-items:center;display:flex;overflow:hidden}.lane-chip button{background:0 0;border:0;border-radius:0}.lane-chip .eye{opacity:.35;padding:2px 6px}.lane-chip .eye.on{opacity:1}.lane-chip .pick.on{background:#5ac8fa2e}#loop-btn.on{color:#ffb86c;border-color:#ffb86c}#global-bar{background:var(--panel);border-top:1px solid var(--line);flex-wrap:wrap;flex:none;align-items:center;gap:14px;padding:5px 16px;font-size:12px;display:flex}#global-bar .group{align-items:center;gap:6px;display:flex}#global-bar label{color:var(--text)}#global-bar .sub,#global-bar .unit{color:var(--dim);font-size:11px}#global-bar .explain{color:var(--dim);margin-left:6px;font-size:11px}#global-bar input.ramp{width:52px}#global-bar button{padding:2px 9px;font-size:12px}#follow-btn.on{border-color:var(--accent);color:var(--accent)}#pitch-track.pen canvas{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24'%3E%3Cpath d='M3 21l1.5-5L16 4.5l3.5 3.5L8 19.5z' fill='%23fff' stroke='%23000' stroke-width='1.2'/%3E%3Cpath d='M3 21l1.5-5 3.5 3.5z' fill='%235ac8fa'/%3E%3C/svg%3E") 3 21,crosshair}#wave-track.pen canvas{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24'%3E%3Cpath d='M11 6v16' stroke='%23000' stroke-width='3'/%3E%3Cpath d='M11 6v16' stroke='%23fff' stroke-width='1.2'/%3E%3Cpath d='M5 1h12l-6 8z' fill='%23ffd166' 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