:root{--zoom: 1;--vh: calc(1vh / var(--zoom));--dock-w: 46px;--lh: 30px;--bg: #f6f3ee;--paper: #fffdf9;--ink: #1f1b2e;--muted: #6c6578;--line: #e3ddd3;--accent: #b86b0e;--accent-ink: #fff;--focus: #3d6fd8;--active: rgba(61, 111, 216, .09);--ok: #1d7f4e;--ok-bg: rgba(29, 127, 78, .08);--warn: #a86400;--warn-bg: rgba(232, 163, 61, .2);--bad: #c03434;--bad-bg: rgba(192, 52, 52, .13);--neutral: #8f879b;color-scheme:light;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}@media(prefers-color-scheme:dark){:root{--bg: #15131c;--paper: #1e1b28;--ink: #ece8f3;--muted: #9b94a8;--line: #322e3e;--accent: #e8a33d;--accent-ink: #1f1b2e;--focus: #7aa2ff;--active: rgba(122, 162, 255, .1);--ok: #4cc38a;--ok-bg: rgba(76, 195, 138, .08);--warn: #f0b44c;--warn-bg: rgba(240, 180, 76, .16);--bad: #ff7b7b;--bad-bg: rgba(255, 123, 123, .15);--neutral: #6f687c;color-scheme:dark}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.45}h1,h2,h3{margin:0;line-height:1.2}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.muted{color:var(--muted)}.small{font-size:.85rem}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.spacer{flex:1}.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}kbd{font:.8em ui-monospace,monospace;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:0 4px}.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:7px 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6px}.gutter-heading{text-align:center;text-transform:none;letter-spacing:0}.section{margin-bottom:18px}.section-header{display:flex;align-items:center;gap:8px;padding:4px 0 6px;min-width:0}.chevron{display:inline-block;transition:transform .15s}.collapsed .chevron{transform:rotate(-90deg)}.section-name{font-weight:700;font-size:.95rem;border:1px solid transparent;background:transparent;border-radius:6px;padding:2px 6px;width:9rem}.section-name:hover{border-color:var(--line)}.repeat{display:inline-flex;align-items:center;gap:2px;color:var(--muted);font-size:.85rem}.repeat select{border:1px solid var(--line);background:var(--paper);border-radius:6px;padding:1px 2px}.section-stats{font-size:.85rem;white-space:nowrap}.stat-ok{color:var(--ok)}.stat-off{color:var(--warn);font-weight:600}.section-preview{font-size:.85rem;font-style:italic;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.line-numbers,.gutter{padding-top:1px}.line-numbers div{height:var(--lh);line-height:var(--lh);text-align:right;font-size:.75rem;color:var(--neutral);font-variant-numeric:tabular-nums}.line-numbers .active{color:var(--ink);font-weight:600}.pane{position:relative;border:1px solid var(--line);border-radius:10px;background:var(--paper);overflow:hidden}.pane:focus-within{border-color:var(--focus)}.row-bg{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.row-tint{height:var(--lh)}.pane-parody .tint-near{background:var(--warn-bg)}.pane-parody .tint-far{background:var(--bad-bg)}.row-tint.active{box-shadow:inset 3px 0 0 var(--focus);background-image:linear-gradient(var(--active),var(--active))}.lyrics{position:relative;display:block;width:100%;border:0;background:transparent;resize:none;padding:0 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var(--paper);background:var(--neutral)}.sync-dot.sync-idle{background:var(--ok)}.sync-dot.sync-syncing{background:var(--focus)}.sync-dot.sync-error{background:var(--bad)}.account-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:30;width:min(300px,calc(100vw - 32px));background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 24px #00000026;padding:14px;display:grid;gap:10px;justify-items:start}.signout-confirm{display:grid;gap:8px}.save-state .sync-error{color:var(--bad)}.save-state .sync-offline{color:var(--warn)}.upload-prompt{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 16px;background:var(--active);border:1px solid var(--focus);border-radius:10px;padding:10px 14px;margin:-12px 0 20px}.upload-prompt p{margin:0;flex:1 1 280px}label.btn:focus-within{outline:2px solid var(--focus);outline-offset:2px}.error-banner{background:var(--bad-bg);color:var(--bad);border-radius:8px;padding:8px 12px;margin:-16px 0 20px}.dialog.narrow{width:min(560px,calc(100vw - 32px))}.history-list{list-style:none;padding:0;margin:0;display:grid;gap:2px;max-height:calc(var(--vh) * 60);overflow-y:auto}.history-list li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:8px 4px;border-bottom:1px solid var(--line)}.lyric-sheet{padding:16px}.sheet-controls{display:flex;align-items:center;gap:16px;flex-wrap:wrap;max-width:900px;margin:0 auto 16px}.sheet-page{max-width:900px;margin:0 auto;background:#fff;color:#1a1a1a;border-radius:6px;box-shadow:0 1px 4px #0000001f;padding:48px 56px;font-family:Georgia,Times New Roman,serif}.sheet-page header{margin-bottom:24px}.sheet-page h1{font-size:1.8rem}.sheet-page header p{margin:4px 0 0;color:#666}.sheet-section{break-inside:avoid;margin-bottom:18px}.sheet-section h2{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;font-family:system-ui,sans-serif;color:#8a5a10;margin-bottom:4px}.sheet-section h2 .muted{color:#888}.sheet-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;line-height:1.6}.sheet-cols>span:first-child{color:#666}.sheet-col-heads{font:600 .7rem system-ui,sans-serif;text-transform:uppercase;letter-spacing:.08em;color:#999;margin-bottom:8px}.sheet-cols.sheet-col-heads>span:first-child{color:#999}.sheet-line{line-height:1.7;font-size:1.1rem}.sheet-page sup{font:600 .6rem system-ui,sans-serif;color:#999;margin-left:4px}@media print{:root,body{background:#fff}#root{zoom:1!important}#zoom-dock,.sheet-controls{display:none}.lyric-sheet{padding:0}.sheet-page{box-shadow:none;padding:0;max-width:none}@page{margin:18mm}}.studio{min-height:calc(var(--vh) * 100);display:flex;flex-direction:column}.lyric-strip{min-height:92px;padding:14px 20px 10px;text-align:center;border-bottom:1px solid var(--line);background:var(--paper)}.strip-now{font-size:1.7rem;font-weight:700;min-height:2.2rem}.strip-next{font-size:1rem;margin-top:4px}.count-in{font-size:3rem;font-weight:800;color:var(--bad);line-height:1}.studio-bar{display:flex;align-items:center;flex-wrap:wrap;gap:10px 14px;padding:10px 20px;border-bottom:1px solid var(--line)}.studio-bar .play{width:44px;height:44px;justify-content:center;border-radius:50%}.btn.rec{border-color:var(--bad);color:var(--bad);font-weight:700}.btn.rec.on{background:var(--bad);color:#fff;animation:rec-pulse 1.2s ease-in-out infinite}@keyframes rec-pulse{50%{box-shadow:0 0 0 6px var(--bad-bg)}}.studio-time{font-size:1.1rem;font-weight:700;min-width:4.5rem}.mic-box{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.mic-box select{max-width:14rem;border:1px solid var(--line);border-radius:6px;background:var(--paper);padding:4px}.meter{display:inline-block;width:90px;height:10px;border-radius:5px;background:var(--line);overflow:hidden}.meter 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10px;background:var(--paper);border-right:1px solid var(--line);display:grid;grid-template-columns:minmax(0,1fr);gap:4px;align-content:center}.tl-zoom{display:flex;align-items:center;gap:4px}.tl-zoom .small.muted{margin-right:auto}.tl-ruler-row{min-height:30px;position:sticky;top:0;z-index:4;background:var(--paper)}.tl-lane{position:relative;flex:1;min-height:72px}.tl-ruler-row .tl-lane{min-height:30px}.ruler{cursor:pointer;background:var(--bg)}.tick{position:absolute;top:0;bottom:0;border-left:1px solid var(--line);padding-left:4px;font-size:.7rem;color:var(--muted);line-height:30px;font-variant-numeric:tabular-nums}.clip{position:absolute;top:4px;height:64px;border-radius:6px;overflow:hidden}.backing-clip{background:var(--bg);border:1px solid var(--line)}.take-clip{background:color-mix(in srgb,var(--accent) 16%,transparent);border:1px solid var(--accent);cursor:grab;touch-action:none}.take-clip.dragging{cursor:grabbing;opacity:.85}.take-clip.missing{border-style:dashed;display:grid;place-items:center}.live-clip{background:var(--bad-bg);border:1px solid var(--bad);padding:4px 8px;color:var(--bad);font-weight:700}.lane-note{padding:26px 12px}.empty-lane{min-height:48px}.playhead{position:absolute;top:0;bottom:0;width:2px;margin-left:-1px;background:var(--focus);z-index:5;pointer-events:none}.track-top{display:flex;align-items:center;gap:6px}.track-name{flex:1;min-width:0;border:1px solid transparent;background:transparent;border-radius:6px;padding:2px 6px;font-weight:600}.track-name:hover{border-color:var(--line)}.track-name.static{padding-left:0}.arm{width:26px;height:26px;border-radius:50%;border:1px solid var(--line);background:var(--paper);color:var(--neutral);cursor:pointer;flex:none;line-height:1}.arm.on{color:#fff;background:var(--bad);border-color:var(--bad)}.ch-controls{display:flex;align-items:center;gap:4px}.ch-controls input[type=range]{flex:1;min-width:0;width:100%;accent-color:var(--accent)}.ch-controls input.pan{flex:0 0 52px;width:52px}.ch-btn{width:24px;height:22px;border-radius:4px;border:1px solid var(--line);background:var(--paper);font-size:.72rem;font-weight:700;cursor:pointer;flex:none}.ch-btn.on.mute{background:var(--warn);border-color:var(--warn);color:#1a1a1a}.ch-btn.on.solo{background:var(--focus);border-color:var(--focus);color:#fff}.edit-tools{display:inline-flex;gap:2px;align-items:center}.track-tools{display:flex;gap:4px;align-items:center;min-width:0}.fx-btn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.75rem}.fx-btn.on{border-color:var(--accent);color:var(--accent)}.fx-btn.open{background:color-mix(in 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var(--line);border-radius:10px;background:var(--paper)}.fx-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}.fx-toggle{display:inline-flex;align-items:center;gap:6px}.fx-presets{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:6px;margin-bottom:12px}.fx-preset{display:grid;gap:2px;text-align:left;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);cursor:pointer;font:inherit}.fx-preset>span:first-child{font-weight:600}.fx-preset.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--paper))}.fx-knobs{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px 18px}.fx-knobs.off{opacity:.5}.fx-knob{display:grid;gap:2px;min-width:0}.fx-label{display:flex;justify-content:space-between;gap:6px;font-weight:600;font-size:.85rem}.fx-knob input[type=range]{width:100%;min-width:0;accent-color:var(--accent)}.fx-knob select{border:1px solid 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.k-time{color:var(--warn);font-weight:700}.warn-text{color:var(--warn)}.karaoke.editing .k-line{cursor:default}.karaoke.editing .k-main{flex-wrap:wrap}.time-editor{display:inline-flex;align-items:center;gap:3px;flex:none}.time-editor.warn input{border-color:var(--warn);background:var(--warn-bg)}.time-editor input{width:5.2rem;border:1px solid var(--line);border-radius:6px;background:var(--bg);padding:3px 6px;font-variant-numeric:tabular-nums;text-align:center;font-size:.85rem}.time-editor input.bad{border-color:var(--bad)}.time-editor .btn{padding:2px 7px}.syncing .k-line.cursor{outline:2px dashed var(--accent);outline-offset:-2px}.syncing .k-line.cursor .k-time:before{content:"tap ▸ ";color:var(--accent);font-weight:700}.transport{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 20px calc(10px + env(safe-area-inset-bottom,0px));background:color-mix(in srgb,var(--paper) 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