:root{--bg:#fff;--surface:#f7f7f7;--border:#e5e5e5;--text:#3c3c3c;--muted:#777;--primary:#58cc02;--primary-dark:#46a302;--primary-text:#fff;--ok-bg:#d7ffb8;--ok-text:#2b7a00;--bad-bg:#ffdfe0;--bad-text:#c0262d;--warn:#e6a100;--focus:#1cb0f6;--radius:16px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#131f24;--surface:#1b2b32;--border:#37464f;--text:#f1f7fb;--muted:#9fb0b9;--primary:#58cc02;--primary-dark:#46a302;--ok-bg:#203a12;--ok-text:#8ee05a;--bad-bg:#3d1b1e;--bad-text:#ff7b80;--warn:#ffc233;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.45}a{color:inherit}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.topbar{border-bottom:2px solid var(--border);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.brand{color:var(--primary);letter-spacing:-.02em;font-size:1.35rem;font-weight:800;text-decoration:none}.lang{gap:4px;display:flex}.lang button{font:inherit;border:2px solid var(--border);color:var(--muted);cursor:pointer;background:0 0;border-radius:10px;padding:6px 10px;font-size:.85rem;font-weight:700}.lang button[aria-pressed=true]{border-color:var(--primary);color:var(--primary)}#screen{max-width:640px;margin:0 auto;padding:20px 16px 48px}h1{margin:8px 0;font-size:1.6rem}.muted{color:var(--muted)}.small{font-size:.85rem}.center{text-align:center}.tagline{color:var(--muted);margin:8px 0 20px;font-size:1.15rem}.credits{color:var(--muted);text-align:center;margin:28px 0 8px;font-size:.8rem}.credits a{color:inherit}.cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;display:grid}.card{border:2px solid var(--border);border-radius:var(--radius);border-bottom-width:5px;flex-direction:column;gap:6px;padding:20px;text-decoration:none;transition:transform .1s;display:flex}.card:hover{border-color:var(--primary)}.card:active{transform:translateY(2px)}.card-icon{font-size:2.2rem}.card-title{font-size:1.25rem;font-weight:800}.card-desc{color:var(--muted)}.back{color:var(--muted);font-weight:600;text-decoration:none}fieldset{border:none;flex-wrap:wrap;gap:8px;margin:18px 0;padding:0;display:flex}legend{margin-bottom:8px;padding:0;font-weight:700}.chip input{opacity:0;pointer-events:none;position:absolute}.chip span{border:2px solid var(--border);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:12px;padding:8px 14px;font-weight:600;display:inline-block}.chip input:checked+span{border-color:var(--focus);background:color-mix(in srgb, var(--focus) 14%, transparent);color:var(--focus)}.chip input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}.btn{font:inherit;text-transform:uppercase;letter-spacing:.03em;border:2px solid var(--border);background:var(--bg);color:var(--text);cursor:pointer;border-bottom-width:4px;border-radius:14px;justify-content:center;align-items:center;gap:6px;padding:12px 22px;font-size:.95rem;font-weight:800;text-decoration:none;display:inline-flex}.btn:active{border-bottom-width:2px;transform:translateY(2px)}.btn.primary{background:var(--primary);border-color:var(--primary-dark);color:var(--primary-text)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}#start,#go{width:100%;margin-top:8px}.lesson-top{align-items:center;gap:12px;margin-bottom:20px;display:flex}.icon-btn{color:var(--muted);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:1.3rem}.progress{background:var(--border);border-radius:99px;flex:1;height:16px;overflow:hidden}.progress div{background:var(--primary);border-radius:99px;height:100%;transition:width .3s}.question{text-align:center;margin-top:24px;font-size:1.7rem}.options{grid-template-columns:1fr 1fr;gap:12px;margin:28px 0;display:grid}.option{font:inherit;border-radius:var(--radius);border:2px solid var(--border);background:var(--bg);color:var(--text);cursor:pointer;border-bottom-width:5px;padding:22px 12px;font-size:1.5rem;font-weight:700;position:relative}.option:hover:not(:disabled){background:var(--surface)}.option kbd{font:inherit;color:var(--muted);border:1.5px solid var(--border);border-radius:6px;padding:0 5px;font-size:.75rem;position:absolute;top:8px;left:10px}.option.is-correct{border-color:var(--ok-text);background:var(--ok-bg);color:var(--ok-text)}.option.is-wrong{border-color:var(--bad-text);background:var(--bad-bg);color:var(--bad-text)}.type-answer{margin:28px 0}.type-answer input{width:100%;font:inherit;text-align:center;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);color:var(--text);padding:16px;font-size:1.5rem}.hint{min-height:1.5em;color:var(--warn);text-align:center}.footer{border-radius:var(--radius);flex-direction:column;gap:12px;padding:16px;display:flex}.footer.ok{background:var(--ok-bg);color:var(--ok-text)}.footer.bad{background:var(--bad-bg);color:var(--bad-text)}.footer>.btn{width:100%}.feedback{flex-direction:column;gap:4px;font-size:1.1rem;display:flex}.scale{opacity:.85;font-weight:600}.footer-actions{gap:10px;display:flex}.footer-actions .btn{flex:1}.done{text-align:center;padding-top:32px}.big-emoji{font-size:4rem}.score{font-size:1.35rem;font-weight:700}.row{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:16px;display:flex}.play-btn{border:2px solid var(--focus);background:color-mix(in srgb, var(--focus) 16%, transparent);cursor:pointer;border-bottom-width:5px;border-radius:24px;width:96px;height:96px;margin:16px auto 0;font-size:2.4rem}.play-btn:active{border-bottom-width:3px;transform:translateY(2px)}.ear-options{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.small-option{padding:18px 10px 14px;font-size:1.05rem}.hint:empty{display:none}.panel{border:2px solid var(--border);border-radius:var(--radius);flex-wrap:wrap;align-items:center;gap:12px;margin:16px 0;padding:16px;display:flex}.tempo{flex-direction:column;flex:220px;gap:6px;display:flex}.tempo input{width:100%;accent-color:var(--primary)}.bars{grid-template-columns:1fr;gap:10px;display:grid}@media (width<=420px){.syl{font-size:.6rem;left:2px}}.bar{border:2px solid var(--border);border-radius:12px;gap:4px;padding:6px 8px 6px 4px;display:flex}.grp{min-width:0;height:76px;color:var(--text);flex-basis:0;padding-top:4px;position:relative}.beat-svg{pointer-events:none;display:block;position:relative}.cell{border-radius:6px;transition:background 80ms;position:absolute;top:0;bottom:0}.syl{letter-spacing:.02em;color:var(--muted);white-space:nowrap;font-size:.68rem;font-weight:700;position:absolute;bottom:3px;left:4px}.figs{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));display:grid}.figs[hidden]{display:none}.fig input{opacity:0;pointer-events:none;position:absolute}.fig>span{border:2px solid var(--border);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:12px;flex-direction:column;gap:4px;padding:8px 12px 8px 8px;display:flex}.fig input:checked+span{border-color:var(--focus);background:color-mix(in srgb, var(--focus) 14%, transparent)}.fig input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}.fig-svg{width:80%;padding-top:4px;display:block}.fig-syl{font-size:.8rem;font-weight:700}.cell.active{background:color-mix(in srgb, var(--focus) 22%, transparent)}.cell.r-perfect{background:var(--ok-bg);color:var(--ok-text)}.cell.r-good{background:color-mix(in srgb, var(--ok-bg) 55%, transparent);color:var(--ok-text)}.cell.r-off{background:color-mix(in srgb, var(--warn) 25%, transparent);color:var(--warn)}.cell.r-missed{background:var(--bad-bg);color:var(--bad-text)}.status{text-align:center;min-height:1.6em;margin:16px 0;font-size:1.3rem;font-weight:700}.pad{width:100%;height:160px;font:inherit;text-transform:uppercase;border:2px solid var(--primary-dark);background:var(--primary);color:var(--primary-text);cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none;border-bottom-width:6px;border-radius:24px;font-size:1.5rem;font-weight:800;display:block}.pad:active{border-bottom-width:3px;transform:translateY(3px)}.pad[data-flash=perfect],.pad[data-flash=good]{animation:.25s flash-ok}.pad[data-flash=off]{animation:.25s flash-warn}.pad[data-flash=extra]{animation:.25s flash-bad}@keyframes flash-ok{0%{box-shadow:0 0 0 8px var(--ok-bg)}}@keyframes flash-warn{0%{box-shadow:0 0 0 8px color-mix(in srgb, var(--warn) 45%, transparent)}}@keyframes flash-bad{0%{box-shadow:0 0 0 8px var(--bad-bg)}}.results{text-align:center;margin-top:20px}.stats{flex-wrap:wrap;justify-content:center;gap:8px 16px;padding:0;list-style:none;display:flex}.stats .r-perfect,.stats .r-good{color:var(--ok-text)}.stats .r-off{color:var(--warn)}.stats .r-missed{color:var(--bad-text)}.run-actions{margin:0 0 12px}.small-btn{padding:8px 14px;font-size:.8rem}.slow-tip,.fast-tip{background:color-mix(in srgb, var(--warn) 16%, transparent);color:var(--text);border-radius:14px;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 12px;margin:0 0 12px;padding:10px 14px;font-weight:600;display:flex}.fast-tip{background:var(--ok-bg);color:var(--ok-text)}h2{margin:28px 0 0;font-size:1.2rem}.explore-card{width:100%;font:inherit;color:inherit;text-align:left;cursor:pointer;background:0 0;margin:16px 0 4px}.link-btn{font:inherit;cursor:pointer;background:0 0;border:none;padding:0}.options.many{grid-template-columns:repeat(auto-fill,minmax(70px,1fr))}.options.many .option{padding:20px 6px 14px;font-size:1.25rem}.circle-wrap{max-width:420px;margin:8px auto 0}.circle5{-webkit-user-select:none;user-select:none;width:100%;height:auto;display:block}.circle5 .w{cursor:pointer}.circle5 .w path{fill:var(--surface);stroke:var(--bg);stroke-width:2px;transition:fill .15s}.circle5 .w.inner path{fill:color-mix(in srgb, var(--surface) 70%, var(--border))}.circle5 .w:hover path{fill:color-mix(in srgb, var(--focus) 18%, var(--surface))}.circle5 .w.on path{fill:color-mix(in srgb, var(--focus) 32%, var(--surface))}.circle5 .w.tonic path{fill:var(--primary)}.circle5 .w:focus-visible{outline:none}.circle5 .w:focus-visible path{stroke:var(--focus);stroke-width:3px}.circle5 text{fill:var(--text);text-anchor:middle;dominant-baseline:middle;pointer-events:none}.circle5 .w-name{font-size:17px;font-weight:800}.circle5 .w-name.small{font-size:13px;font-weight:700}.circle5 .w.tonic text{fill:var(--primary-text)}.circle5 .w-role{fill:var(--focus);font-size:11px;font-weight:800}.circle5 .w.tonic .w-role{fill:var(--primary-text)}.circle5 .w-center{fill:var(--bg);stroke:var(--border);stroke-width:2px}.circle5 .c-key{font-size:24px;font-weight:800}.circle5 .c-sig{fill:var(--muted);font-size:14px}.sig-text{text-align:center;margin:12px 0;font-weight:600}.chord-row{flex-wrap:wrap;gap:6px;margin:6px 0;display:flex}.chord-row.big{justify-content:center}.chord-chip{border:2px solid var(--border);background:var(--bg);min-width:48px;color:var(--text);font:inherit;border-radius:10px;flex-direction:column;align-items:center;padding:4px 8px;font-size:.95rem;font-weight:700;display:inline-flex}button.chord-chip{cursor:pointer;border-bottom-width:4px;min-width:64px;padding:8px 10px}button.chord-chip:active{border-bottom-width:2px;transform:translateY(2px)}.chord-chip small{opacity:.75;font-size:.7rem;font-weight:800}.chord-chip.q-maj{border-color:color-mix(in srgb, var(--focus) 55%, var(--border))}.chord-chip.q-min{border-color:color-mix(in srgb, var(--primary) 55%, var(--border))}.chord-chip.q-dim{border-color:color-mix(in srgb, var(--warn) 60%, var(--border))}.chord-chip.is-mark{background:var(--text);color:var(--bg);border-color:var(--text)}.arrow{opacity:.6;align-self:center}.feedback .chord-row+span,.feedback>span{font-size:.95rem}