:root{--bg:#f6f5f1;--surface:#fff;--text:#1b1d2a;--muted:#646778;--border:#dddbd3;--accent:#3a5bd9;--accent-text:#fff;--good:#1f8a4c;--bad:#c2412d;--band:#1f8a4c29;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#14151d;--surface:#1e202b;--text:#ecebe6;--muted:#9a9cab;--border:#33364a;--accent:#7b93f2;--accent-text:#10121a;--good:#4cc27f;--bad:#f07a63;--band:#4cc27f2e;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent;font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{max-width:480px;padding:max(24px, env(safe-area-inset-top)) 16px max(24px, env(safe-area-inset-bottom));flex-direction:column;gap:16px;min-height:100dvh;margin:0 auto;display:flex}h1{margin:16px 0 0;font-size:2rem}.lead{color:var(--muted);margin:0}.tip{margin:0}.fine{color:var(--muted);margin:0;font-size:.85rem}.error{color:var(--bad);margin:0;font-weight:600}button{font:inherit;border:1px solid var(--border);background:var(--surface);min-height:48px;color:var(--text);cursor:pointer;touch-action:manipulation;border-radius:12px;padding:0 20px;font-weight:600}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}button:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.settings{gap:12px;display:grid}.settings label{color:var(--muted);gap:4px;font-size:.9rem;display:grid}.settings label.check{color:var(--text);align-items:center;gap:8px;display:flex}.settings input[type=checkbox]{width:20px;height:20px;accent-color:var(--accent)}select{font:inherit;border:1px solid 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div{background:var(--accent);height:100%;transition:width 60ms linear}.live{text-align:center;font-variant-numeric:tabular-nums;min-height:3.3rem;margin:0;font-size:2.2rem;font-weight:700}.cents{color:var(--muted);font-size:1rem;font-weight:500}.actions{flex-wrap:wrap;gap:8px;display:flex}.actions button{flex:1 1 0}.result{gap:8px;display:grid}.result p{margin:0}.verdict{font-size:1.5rem;font-weight:700}.result.correct .verdict{color:var(--good)}.result.incorrect .verdict{color:var(--bad)}.trace{background:var(--surface);border:1px solid var(--border);border-radius:12px;width:100%;height:auto}.trace-band{fill:var(--band)}.trace-target{stroke:var(--good);stroke-width:1px}.trace-ref{stroke:var(--muted);stroke-width:1px;stroke-dasharray:4 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td{border-top:1px solid var(--border)}td.good{color:var(--good)}td.bad{color:var(--bad)}.instrument{color:var(--muted);margin:10px 0 0;font-size:.85rem}