:root{color-scheme:dark;--stage:oklch(17% .015 265);--stage-lift:oklch(23% .02 265);--ink:oklch(93% .01 265);--ink-soft:oklch(68% .015 265);--ink-faint:oklch(52% .015 265);--case:oklch(26% .02 48);--case-deep:oklch(19% .018 48);--case-lip:oklch(36% .03 52);--felt:oklch(42% .115 20);--felt-shade:oklch(28% .08 20);--key-white-back:oklch(84% .014 88);--key-white:oklch(95% .011 88);--key-white-lip:oklch(99.5% .008 88);--key-white-lit:oklch(99% .025 92);--key-black-top:oklch(34% .014 265);--key-black:oklch(21% .012 265);--key-black-lit:oklch(46% .04 95);--key-gloss:oklch(100% 0 0/.26);--key-edge:oklch(0% 0 0/.22);--key-letter:oklch(48% .012 265);--shadow-cast:oklch(0% 0 0/.45);--shadow-soft:oklch(0% 0 0/.28);--glow:oklch(85% .16 85);--glow-soft:oklch(85% .16 85/.45);--line:oklch(100% 0 0/.12);--line-strong:oklch(100% 0 0/.22);--tap:2.8rem;--lift:.12s ease-out;--gutter:clamp(.75rem, 3vw, 2.5rem)}*{box-sizing:border-box}body{background:radial-gradient(ellipse at 50% 0%, var(--stage-lift), var(--stage) 70%);min-height:100dvh;color:var(--ink);flex-direction:column;justify-content:center;gap:1.25rem;margin:0;padding:clamp(.75rem,3vw,2.5rem) 0;font-family:ui-sans-serif,system-ui,sans-serif;line-height:1.5;display:flex}main{flex-direction:column;gap:1.25rem;display:flex}.skip-link{background:var(--stage-lift);color:var(--ink);border-radius:.5rem;padding:.5rem 1rem;position:absolute;left:-100vw}.skip-link:focus{position:static}.masthead{padding-inline:var(--gutter);text-align:center}h1{letter-spacing:.02em;margin:0;font-size:clamp(1.4rem,4.5vw,2.1rem);font-weight:600}.invite{color:var(--ink-soft);margin:.25rem 0 0;font-size:clamp(.9rem,2.5vw,1.05rem)}.stage{padding-inline:var(--gutter);flex-direction:column;align-items:center;gap:.25rem;display:flex}.ring{width:clamp(7.5rem,26vw,11rem);height:auto;overflow:visible}.ring-track{fill:none;stroke:var(--line);stroke-width:.8px}.tick{fill:var(--ink-faint)}.tick-bar{fill:var(--ink-soft)}.hit{fill:var(--glow)}.playhead{stroke:var(--glow);stroke-width:2.4px;stroke-linecap:round}.ring-caption{color:var(--ink-faint);font-variant-numeric:tabular-nums;letter-spacing:.02em;margin:0;font-size:.8rem}.piano{background:linear-gradient(var(--case-lip), var(--case) 38%, var(--case-deep));width:min(100%,62rem);box-shadow:0 1.4rem 2.6rem var(--shadow-cast), inset 0 1px 0 var(--line-strong);margin:0 auto}.piano-felt{background:linear-gradient(var(--felt-shade), var(--felt));height:.45rem;box-shadow:0 1px 3px var(--shadow-cast)}.keyboard{perspective:900px;perspective-origin:top;touch-action:none;user-select:none;height:clamp(8.5rem,30dvh,14rem);display:flex;position:relative}.key{font:inherit;cursor:pointer;border:0;padding:0}.key-white{z-index:0;border-right:1px solid var(--key-edge);background:linear-gradient(var(--key-white-back), var(--key-white) 12%, var(--key-white) 88%, var(--key-white-lip));min-width:0;box-shadow:0 .5rem .9rem var(--shadow-soft), inset -1px 0 0 var(--key-edge);transform-origin:top;transition:background var(--lift), transform var(--lift), box-shadow var(--lift);border-radius:0 0 .35rem .35rem;flex:1 1 0;justify-content:center;align-items:flex-end;padding-bottom:.55rem;display:flex;position:relative}.key-white:last-child{border-right:0}.key-white:before{background:linear-gradient(var(--key-white-lip), var(--key-white-back));content:"";pointer-events:none;border-radius:0 0 .35rem .35rem;height:.3rem;position:absolute;bottom:0;left:0;right:0}.key-letter{z-index:1;color:var(--key-letter);letter-spacing:.04em;pointer-events:none;font-size:.75rem;position:relative}.key-black{top:0;left:var(--offset);z-index:1;transform-origin:top;background:linear-gradient(var(--key-black-top), var(--key-black) 55%, var(--key-black-top));width:max(1.5rem,7.25%);height:62%;box-shadow:0 .5rem .8rem var(--shadow-cast), inset 0 -.22rem 0 var(--key-black-top), inset 1px 0 0 var(--key-gloss);transition:background var(--lift), transform var(--lift), box-shadow var(--lift);border-radius:0 0 .28rem .28rem;position:absolute;transform:translate(-50%)}.key-black:before{background:linear-gradient(var(--key-gloss), transparent 60%);content:"";pointer-events:none;border-radius:0 0 .2rem .2rem;width:22%;position:absolute;top:0;bottom:.3rem;left:18%}.key-black:after{width:max(var(--tap), 100%);content:"";height:100%;position:absolute;top:0;left:50%;transform:translate(-50%)}.key:focus-visible{outline:2px solid var(--glow);outline-offset:3px}.key-white[data-sounding]{background:linear-gradient(var(--key-white-back), var(--key-white-lit) 12%, var(--key-white-lit) 88%, var(--key-white-lip));box-shadow:0 .2rem .5rem var(--shadow-soft), 0 .5rem 1.1rem var(--glow-soft), inset -1px 0 0 var(--key-edge);transform:rotateX(1.8deg)}.key-black[data-sounding]{background:linear-gradient(var(--key-black-lit), var(--key-black) 70%);box-shadow:0 .2rem .4rem var(--shadow-cast), 0 .4rem .9rem var(--glow-soft);transform:translate(-50%)rotateX(2.6deg)}.controls{width:min(100%,62rem);padding-inline:var(--gutter);flex-wrap:wrap;justify-content:center;gap:.75rem 1.5rem;margin:0 auto;display:flex}.control{flex-direction:column;flex:14rem;gap:.1rem;max-width:22rem;display:flex}.control-name{color:var(--ink-soft);font-variant-numeric:tabular-nums;letter-spacing:.02em;font-size:.8rem}.control-ends{color:var(--ink-faint);justify-content:space-between;font-size:.7rem;display:flex}.control-buttons{flex-flow:wrap;justify-content:center;align-items:center;gap:.5rem}.control-switch{min-height:var(--tap);cursor:pointer;flex-flow:row;justify-content:center;align-items:center;gap:.6rem}.switch{opacity:0;pointer-events:none;width:1px;height:1px;margin:0;position:absolute}.switch-track{border:1px solid var(--line-strong);background:var(--stage-lift);border-radius:1rem;flex:none;align-items:center;width:2.6rem;height:1.5rem;padding:.15rem;transition:background .16s,border-color .16s;display:inline-flex}.switch-knob{background:var(--ink-faint);border-radius:50%;width:1.1rem;height:1.1rem;transition:translate .16s,background .16s}.switch:checked+.switch-track{border-color:var(--glow-soft);background:var(--glow-soft)}.switch:checked+.switch-track .switch-knob{background:var(--glow);translate:1.1rem}.switch:focus-visible+.switch-track{outline:2px solid var(--glow);outline-offset:2px}.slider{width:100%;height:var(--tap);appearance:none;cursor:pointer;background:0 0;margin:0}.slider::-webkit-slider-runnable-track{background:var(--line-strong);border-radius:.35rem;height:.35rem}.slider::-moz-range-track{background:var(--line-strong);border-radius:.35rem;height:.35rem}.slider::-webkit-slider-thumb{width:var(--tap);height:var(--tap);margin-top:calc((.35rem - var(--tap)) / 2);border:calc((var(--tap) - 1.2rem) / 2) solid transparent;background:var(--glow);appearance:none;background-clip:content-box;border-radius:50%}.slider::-moz-range-thumb{width:var(--tap);height:var(--tap);border:calc((var(--tap) - 1.2rem) / 2) solid transparent;background:var(--glow);background-clip:content-box;border-radius:50%}.slider:focus-visible{outline:2px solid var(--glow);outline-offset:2px}.chip{min-width:var(--tap);min-height:var(--tap);border:1px solid var(--line-strong);background:var(--stage-lift);color:var(--ink-soft);font:inherit;cursor:pointer;transition:color var(--lift), border-color var(--lift);border-radius:.6rem;padding:0 .9rem;font-size:.85rem}.chip:hover{border-color:var(--glow);color:var(--ink)}.chip:focus-visible{outline:2px solid var(--glow);outline-offset:2px}@media (width>=48rem){body{gap:2rem}main{gap:1.75rem}.piano{border-radius:.5rem .5rem .9rem .9rem;padding:0 .75rem .75rem}.piano-felt{border-radius:.15rem .15rem 0 0}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.key-white[data-sounding]{transform:none}.key-black[data-sounding]{transform:translate(-50%)}}