:root{--bg:#f6f5fa;--card:#fff;--text:#22212b;--muted:#6b6880;--accent:#7e57c2;--accent-weak:#ede7f6;--warn:#b26a00;--error:#c62828;--border:#dedbe8;color-scheme:light dark;font-family:system-ui,Hiragino Sans,Noto Sans JP,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#17161d;--card:#222029;--text:#ecebf2;--muted:#a19eb3;--accent:#b39ddb;--accent-weak:#332c45;--warn:#ffb74d;--error:#ef9a9a;--border:#3a3746}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}main{max-width:860px;margin:0 auto;padding:16px}header h1{color:var(--accent);letter-spacing:.05em;margin:8px 0 0}header p{color:var(--muted);margin:4px 0 16px}section{background:var(--card);border:1px solid var(--border);border-radius:12px;margin-bottom:16px;padding:16px}h2{align-items:center;gap:8px;margin:0 0 12px;font-size:1.05rem;display:flex}.step{background:var(--accent);width:1.6em;height:1.6em;color:var(--card);border-radius:50%;place-items:center;font-size:.85rem;display:inline-grid}.row{flex-wrap:wrap;align-items:center;gap:12px;margin-top:8px;display:flex}.options{flex-wrap:wrap;gap:8px 20px;margin:12px 0;display:flex}label{align-items:center;gap:6px;display:inline-flex}select,input[type=number],textarea{font:inherit;color:inherit;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:4px 6px}select{max-width:100%}input[type=number]{width:4.5em}textarea{resize:vertical;width:100%;line-height:1.6}button{font:inherit;color:inherit;cursor:pointer;background:var(--accent-weak);border:1px solid var(--border);border-radius:8px;padding:6px 12px}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);color:var(--card);border:none;padding:10px 28px;font-size:1.1rem;font-weight:700}.vb{margin-top:12px}.vb p{margin:0 0 8px}pre{white-space:pre-wrap;background:var(--bg);border-radius:6px;max-height:200px;padding:8px;font-size:.85rem;overflow:auto}.agree{font-weight:700}.muted{color:var(--muted);font-size:.9rem}.warn{color:var(--warn)}.error{color:var(--error);white-space:pre-wrap}.notes{border:1px solid var(--border);border-radius:8px;flex-direction:column;gap:6px;max-height:420px;padding:6px;display:flex;overflow-y:auto}.phrase{flex-wrap:wrap;align-items:center;gap:4px;display:flex}.bar{color:var(--muted);flex-shrink:0;width:3.6em;font-size:.7rem}.note{background:var(--accent-weak);border-radius:6px;flex-direction:column;align-items:center;min-width:2.8em;padding:2px 4px;display:flex}.note .tone{color:var(--muted);font-size:.65rem}.note .lyric{font-size:1rem}.note.skipped{opacity:.35;background:0 0}.note.first{outline:2px solid var(--accent)}.note.nolyric{background:0 0}.note.playing{background:var(--accent);color:var(--card)}.note.playing .tone{color:inherit}.tracks{border-collapse:collapse;width:100%;margin-top:4px;font-size:.9rem}.tracks th,.tracks td{text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;padding:4px 6px}.tracks td label{cursor:pointer}section{overflow-x:auto}.summary{margin:12px 0 0;padding-left:1.2em}.progress{align-items:center;gap:12px;margin-top:12px;display:flex}progress{flex:1}.output{margin-top:16px}audio{width:100%}footer{color:var(--muted);text-align:center;padding:8px 0 24px;font-size:.8rem}footer a{color:inherit}