:root{--bg-0:#f6f3fb;--bg-1:#fff;--bg-2:#f3effa;--bg-3:#ebe5f6;--bg-4:#e0d8f0;--line:#301e5014;--line-strong:#301e5024;--text:#1a1228;--text-dim:#5c5470;--text-mute:#8a829c;--pink:#db2777;--violet:#7c3aed;--indigo:#6366f1;--amber:#d97706;--rose:#e11d48;--mint:#059669;--danger:#e11d48;--warn:#d97706;--surface:#ffffffb8;--surface-solid:#fff;--overlay:#1a12280a;--overlay-strong:#1a122812;--glow-pink:#db277724;--glow-violet:#7c3aed1f;--radius:14px;--radius-sm:10px;--shadow:0 16px 40px #301e501a;--shadow-soft:0 4px 16px #301e500f;--font:"DM Sans", system-ui, sans-serif;--serif:"Instrument Serif", Georgia, serif;--track-gutter:176px;--transport-h:64px;--status-h:32px;--rail-w:64px;--side-w:360px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*,:before,:after{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font);background:var(--bg-0);color:var(--text);-webkit-font-smoothing:antialiased;overflow:hidden}button,input,select{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:none}input[type=range]{accent-color:var(--pink)}.sr-only{clip:rect(0, 0, 0, 0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.brand{align-items:center;gap:10px;display:flex}.brand-mark{width:28px;height:28px;box-shadow:0 0 0 1px var(--line-strong), 0 0 20px var(--glow-pink);background:radial-gradient(circle at 30% 30%,#f9a8d4,#0000 55%),radial-gradient(circle at 70% 70%,#c4b5fd,#0000 50%),linear-gradient(135deg,#fdf2f8,#f5f3ff);border-radius:9px}.brand-name{letter-spacing:-.03em;font-size:1.1rem;font-weight:700}.brand-sm .brand-mark{border-radius:7px;width:22px;height:22px}.btn-primary{background:linear-gradient(135deg, var(--pink), var(--violet));color:#fff;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:.7rem 1.15rem;font-weight:600;transition:transform .15s,filter .15s,opacity .15s;display:inline-flex;box-shadow:0 8px 24px #db277747}.btn-primary:hover:not(:disabled){filter:brightness(1.08);transform:translateY(-1px)}.btn-primary:disabled{opacity:.55;cursor:not-allowed}.btn-lg{padding:.85rem 1.4rem;font-size:1rem}.btn-ghost{border:1px solid var(--line-strong);background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-soft);border-radius:999px;align-items:center;gap:6px;padding:.45rem .75rem;font-size:.85rem;font-weight:500;transition:background .15s,border-color .15s,box-shadow .15s;display:inline-flex}.btn-ghost:hover{background:var(--bg-2);border-color:#7c3aed47}.btn-sm{padding:.35rem .65rem;font-size:.8rem}.t-btn{width:34px;height:34px;color:var(--text-dim);background:0 0;border-radius:10px;place-items:center;transition:background .15s,color .15s;display:grid}.t-btn:hover:not(:disabled){background:var(--overlay-strong);color:var(--text)}.t-btn:disabled{opacity:.35;cursor:not-allowed}.t-btn.active{color:var(--violet);background:#7c3aed1f}.t-btn-play{background:var(--bg-1);width:42px;height:42px;color:var(--text);box-shadow:var(--shadow-soft);border:1px solid var(--line);border-radius:50%}.t-btn-play.active{background:linear-gradient(135deg, var(--pink), var(--violet));color:#fff;border-color:#0000}.t-btn-rec{color:var(--danger)}.t-btn-rec.recording{color:var(--danger);background:#e11d481f;animation:1s infinite pulse-rec}@keyframes pulse-rec{0%,to{box-shadow:0 0 #f43f5e73}50%{box-shadow:0 0 0 8px #f43f5e00}}.welcome{background:radial-gradient(ellipse 80% 50% at 50% -20%, #7c3aed1f, transparent), radial-gradient(ellipse 60% 40% at 100% 40%, #db277714, transparent), radial-gradient(ellipse 50% 40% at 0% 80%, #6366f10f, transparent), var(--bg-0);min-height:100%;padding:1.5rem 2rem 3rem;position:relative;overflow:auto}.welcome-glow{filter:blur(90px);pointer-events:none;opacity:.55;z-index:0;border-radius:50%;position:fixed}.welcome-glow-a{background:#f472b647;width:420px;height:420px;top:-80px;left:10%}.welcome-glow-b{background:#a78bfa40;width:380px;height:380px;bottom:10%;right:5%}.welcome-glow-c{background:#fbbf241f;width:280px;height:280px;top:40%;left:50%}.welcome-top,.welcome-main,.welcome-foot{z-index:1;max-width:1100px;margin:0 auto;position:relative}.welcome-top{justify-content:space-between;align-items:center;margin-bottom:3rem;display:flex}.welcome-tag{color:var(--text-dim);margin:0;font-size:.9rem}.welcome-hero{max-width:720px;margin-bottom:3rem}.welcome-badge{color:var(--violet);background:#7c3aed14;border:1px solid #7c3aed2e;border-radius:999px;align-items:center;gap:6px;margin-bottom:1.25rem;padding:.35rem .75rem;font-size:.8rem;font-weight:600;display:inline-flex}.welcome-hero h1{font-family:var(--serif);letter-spacing:-.02em;margin:0 0 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.15s;display:grid}.session-row-delete:hover:not(:disabled){color:var(--danger);background:#e11d480f}.session-row-delete:disabled{opacity:.5;cursor:wait}.welcome-hint strong{color:var(--text-dim);font-weight:600}.welcome-features{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-bottom:3rem;display:grid}.feature-card{border-radius:var(--radius);background:var(--surface-solid);border:1px solid var(--line);box-shadow:var(--shadow-soft);padding:1.25rem;transition:border-color .2s,transform .2s,box-shadow .2s}.feature-card:hover{box-shadow:var(--shadow);border-color:#7c3aed47;transform:translateY(-2px)}.feature-icon{width:40px;height:40px;color:var(--pink);background:linear-gradient(135deg,#db27771f,#7c3aed1f);border-radius:12px;place-items:center;margin-bottom:.85rem;display:grid}.feature-card h3{margin:0 0 .4rem;font-size:1rem}.feature-card p{color:var(--text-dim);margin:0;font-size:.9rem;line-height:1.5}.welcome-path{border-radius:var(--radius);border:1px solid 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.45rem;font-size:.68rem;font-weight:700;overflow:hidden}.transport-right{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:.6rem;display:flex}.meter-block{align-items:center;gap:4px;display:flex}.meter-label{color:var(--text-mute);width:18px;font-size:.65rem;font-weight:700}.meter{background:var(--bg-3);border:1px solid var(--line);border-radius:999px;width:56px;height:6px;overflow:hidden}.meter-fill{border-radius:inherit;height:100%;transition:width 50ms linear}.meter-fill.input{background:linear-gradient(90deg, var(--mint), var(--amber), var(--danger))}.meter-fill.master{background:linear-gradient(90deg, var(--violet), var(--pink))}.vol-field{color:var(--text-dim);align-items:center;gap:4px;display:flex}.vol-field 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solid var(--line);background:var(--bg-2);flex-shrink:0;overflow:auto}.studio-status{height:var(--status-h);border-top:1px solid var(--line);background:var(--bg-2);color:var(--text-mute);flex-shrink:0;justify-content:space-between;align-items:center;gap:1rem;padding:0 .85rem;font-size:.72rem;display:flex}.status-left{align-items:center;gap:6px;min-width:0;display:flex}.status-left span{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.status-msg{color:var(--violet);white-space:nowrap;text-overflow:ellipsis;text-align:right;max-width:min(52vw,520px);font-weight:500;overflow:hidden}.arrange{flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.arrange-header{border-bottom:1px solid var(--line);background:var(--bg-2);flex-shrink:0;height:32px;display:flex}.track-header-gutter{width:var(--track-gutter);min-width:var(--track-gutter);max-width:var(--track-gutter);text-transform:uppercase;letter-spacing:.06em;color:var(--text-mute);border-right:1px solid var(--line-strong);box-sizing:border-box;background:var(--bg-2);z-index:21;flex-shrink:0;justify-content:space-between;align-items:center;gap:.25rem;padding:0 .4rem;font-size:.68rem;font-weight:700;display:flex;position:sticky;left:0;overflow:hidden;box-shadow:4px 0 10px #301e500f}.track-header-label{text-overflow:ellipsis;white-space:nowrap;flex-shrink:1;min-width:0;overflow:hidden}.track-header-actions{flex-shrink:0;align-items:center;gap:2px;display:flex}.btn-icon-sm{width:26px;height:26px;color:var(--text-mute);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;flex-shrink:0;place-items:center;padding:0;transition:color .15s,background .15s,border-color .15s;display:inline-grid}.btn-icon-sm:hover{color:var(--text);background:var(--overlay-strong);border-color:var(--line)}.btn-icon-sm.active,.score-toggle-global.active{color:var(--violet);background:#7c3aed1a;border-color:#7c3aed59}.add-track-menu 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0;border:none;outline:none;padding:0;font-size:.8rem;font-weight:600;line-height:1.15;overflow:hidden}.track-role{opacity:.85;white-space:nowrap;text-overflow:ellipsis;font-size:.62rem;font-weight:600;line-height:1.2;display:block;overflow:hidden}.track-core-btns{flex-shrink:0;align-items:center;gap:2px;display:flex}.chip{min-width:22px;height:22px;color:var(--text-mute);background:var(--bg-0);border:1px solid var(--line);cursor:pointer;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;padding:0 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