:root{--bg: #faf8f4;--fg: #1d1b18;--muted: #6b665e;--line: #ddd7cc;--accent: #7a4b1f;--card: #ffffff;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #17150f;--fg: #ece7dd;--muted: #9a9387;--line: #3a352c;--accent: #d9a066;--card: #211e17;color-scheme:dark}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,-apple-system,sans-serif}main{max-width:960px;margin:0 auto;padding:32px 16px 64px}h1{margin:0;font-size:28px}h2{margin:0;font-size:18px}.sub{color:var(--muted);margin:4px 0 24px}.row{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap;align-items:center}.row input[type=text],.row input[type=url]{flex:1 1 240px}input,textarea,button{font:inherit;color:inherit}input[type=text],input[type=url],textarea{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:8px 10px}textarea{width:100%;min-height:260px;font-family:ui-monospace,Menlo,monospace;font-size:13px;resize:vertical}button{background:var(--accent);color:var(--bg);border:1px solid var(--accent);border-radius:6px;padding:8px 16px;cursor:pointer}button.secondary{background:transparent;color:var(--accent)}button:disabled{opacity:.5;cursor:wait}.source{margin-top:10px;gap:16px}.source label{display:flex;gap:6px;align-items:center;color:var(--muted);white-space:nowrap}.source input,.source select{color:var(--fg)}.source select{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:6px 8px;font:inherit}#src-tuning{width:11em;font-family:ui-monospace,Menlo,monospace}#src-capo{width:4em}#src-tuning.invalid{border-color:#b3261e}.status.warn{color:#b26a00}.controls{margin-top:10px;gap:16px}.controls small{color:var(--muted)}.controls button{margin-left:auto}.status{color:var(--muted);margin:0 0 10px}.status.error{color:#b3261e}#result{margin-top:28px}.out-head{display:flex;justify-content:space-between;align-items:center;margin:16px 0 8px}pre{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:16px;overflow-x:auto;font-size:13px;line-height:1.35}.diagrams{display:flex;flex-wrap:wrap;gap:12px}.diagram{text-align:center;font-size:13px}.diagram svg{display:block;color:var(--fg)}