html,body,#root{height:100%;margin:0}.roboto-mono-title{font-family:Roboto Mono,monospace;font-optical-sizing:auto;color:#2d0b03;font-weight:200;font-style:normal;font-size:clamp(3rem,8vw,8rem);margin:0;letter-spacing:clamp(2.9rem,3vw,5.8rem);transition:letter-spacing .22s ease}.splash-start{background:transparent;border:none;padding:0;color:inherit;cursor:pointer;transition:transform .22s ease,opacity .22s ease;will-change:transform,opacity}.splash-start:hover{transform:translateY(-3px);opacity:.9}.splash-start:hover .roboto-mono-title{letter-spacing:clamp(6.4rem,4.5vw,8.8rem)}.splash-start:focus-visible{outline:2px solid #121212;outline-offset:6px}.start-face{display:flex;flex-direction:column;align-items:center;text-align:center}@media(prefers-reduced-motion:reduce){.splash-start{transition:none}.splash-start:hover{transform:none;letter-spacing:2rem;opacity:1}}body{display:flex;justify-content:center;align-items:center;height:100%}.app-container{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center}.key-guide-shell{position:fixed;inset:0;z-index:12;pointer-events:none;display:grid;grid-template-rows:auto auto 1fr auto;justify-items:center;row-gap:clamp(.35rem,1.5vh,.9rem);padding:clamp(.7rem,2vh,1.3rem) clamp(.8rem,3vw,2.2rem) clamp(.8rem,2.5vh,1.4rem)}.key-guide-top,.key-guide-middle,.key-guide-bottom{width:min(72rem,calc(100vw - 2rem))}.key-guide-top{display:grid;grid-template-columns:1fr auto 1fr;align-items:start}.guide-pair{display:flex;gap:.55rem}.guide-control{display:flex;flex-direction:column;align-items:center;gap:.18rem}.guide-control__label{font-family:Roboto Mono,monospace;font-size:.6rem;letter-spacing:.04em;color:#2d0b03d1;line-height:1}.key-guide-top .guide-pair:first-child{justify-content:flex-start}.key-guide-top .guide-pair:last-child{justify-content:flex-end}.guide-layout-switch{pointer-events:auto;display:inline-flex;gap:.35rem;background:#ffffffa6;border:1px solid rgba(45,11,3,.2);border-radius:999px;padding:.2rem}.guide-layout-btn{pointer-events:auto;border:none;background:transparent;border-radius:999px;font-family:Roboto Mono,monospace;font-size:.62rem;letter-spacing:.08em;color:#2d0b03c2;padding:.28rem .58rem;cursor:pointer}.guide-layout-btn.is-active{background:#2d0b031f;color:#2d0b03}.key-guide-middle,.key-guide-bottom{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(.65rem,2.5vw,2.4rem)}.key-guide-middle{margin-top:clamp(.45rem,1.8vh,1rem)}.key-guide-bottom{align-self:end}.guide-hand,.guide-position{display:flex;flex-direction:column;align-items:center;gap:.35rem}.guide-hand__row{display:flex;gap:.35rem}.guide-title{margin:.05rem 0 0;font-family:Roboto Mono,monospace;font-size:.76rem;letter-spacing:.04em;color:#2d0b03db}.guide-key{pointer-events:auto;min-width:2.65rem;height:2.45rem;border:1px solid #c9b89f;border-radius:.42rem;background:#f2e8d8;color:#2d0b03;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:.14rem;padding:.24rem .4rem;font-family:Roboto Mono,monospace;cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:none;box-shadow:inset 0 -1px #00000014;transform:translateY(0);transition:transform 90ms ease,box-shadow 90ms ease,background-color .12s ease}.guide-key--neutral{background:#f2e8d8;border-color:#c9b89f}.guide-key--left{background:#fff4ea;border-color:#895a4c}.guide-key--right{background:#fff6ea;border-color:#d3872f}.guide-key.is-pressed{transform:translateY(2px);box-shadow:inset 0 1px #00000014}.guide-key--neutral.is-pressed{background:#e6dbc9}.guide-key--left.is-pressed{background:#f1ddc8}.guide-key--right.is-pressed{background:#f3e8d6}.guide-key__label{font-size:1rem;line-height:1}.guide-key__hint{font-size:.58rem;letter-spacing:.03em;line-height:1;color:#161616c7}@media(max-width:900px){.key-guide-top{grid-template-columns:1fr;justify-items:center;gap:.45rem}.key-guide-middle,.key-guide-bottom{grid-template-columns:1fr;gap:.7rem}}@media(max-height:760px){.guide-key{min-width:2.35rem;height:2.2rem}.guide-key__label{font-size:.88rem}.guide-key__hint{font-size:.54rem}}.menu-credit{position:fixed;left:50%;bottom:max(14px,env(safe-area-inset-bottom));transform:translate(-50%);font-family:Roboto Mono,monospace;font-size:.72rem;letter-spacing:.08em;color:#2d0b03;opacity:.72;pointer-events:none;-webkit-user-select:none;user-select:none;z-index:5}.menu-waves,.piano-waves{position:absolute;top:0;left:0;width:100%;height:100vh;z-index:-1;overflow:hidden;background-color:#f1f1d9}.menu-waves svg,.piano-waves svg{width:100%;height:100%;display:block}.piano-wave{transform-box:fill-box;transform-origin:center;transition:transform 1.2s cubic-bezier(.22,1,.36,1);will-change:transform}.wave{transform:translate(0);transform-box:fill-box;transform-origin:center;opacity:1;transition:transform 1.2s cubic-bezier(.22,1,.36,1),opacity .8s ease}.menu-waves.is-hidden .wave--top-left{transform:translate(-22vw,-22vh);opacity:0}.menu-waves.is-hidden .wave--top-right{transform:translate(22vw,-22vh);opacity:0}.menu-waves.is-hidden .wave--bottom-left{transform:translate(-22vw,22vh);opacity:0}.menu-waves.is-hidden .wave--bottom-right{transform:translate(22vw,22vh);opacity:0}@media(prefers-reduced-motion:reduce){.wave,.piano-wave{transition:none}}.piano{--white-width: clamp(1.2rem, 2.4vw, 2rem);--white-height: clamp(6rem, 10vw, 9.5rem);--black-width: clamp(.7rem, 1.4vw, 1.1rem);--black-height: clamp(4rem, 7vw, 6.5rem);display:flex;justify-content:center;padding:clamp(.75rem,2vw,2rem) clamp(.5rem,2vw,1rem)}.key{position:relative;box-sizing:border-box;border:.5px solid #c2c2c2;border-bottom-left-radius:4px;border-bottom-right-radius:4px;cursor:pointer;display:flex;align-items:flex-end;justify-content:center;padding-bottom:clamp(.4rem,1vw,1rem);font-weight:700;transition:transform .1s,background-color .1s}.key:active,.key.pressed{transform:translateY(2px);transform-origin:bottom center;z-index:20}.key.playable{transform:scale(1.08,1.15);transform-origin:center center;z-index:8}.key.playable-left{border:1.2px solid #895a4c;background-color:#fff4ea}.key.playable-right{border:1.2px solid #d3872f;background-color:#fff6ea}.key.playable-both{border:1.2px solid #787574;background-color:#fffaf3}.key.playable.pressed{transform:translateY(2px) scale(1.08,1.15);transform-origin:center center}.white.playable,.white.playable.pressed{margin:0 .06rem}.white.playable-left.pressed{background-color:#f1ddc8}.white.playable-right.pressed{background-color:#f3e8d6}.black.playable-left.pressed{background-color:#f1ddc8}.black.playable-right.pressed{background-color:#f3e8d6}.white.playable-both.pressed,.black.playable-both.pressed{background-color:#efe3d8}.title{font-size:2.5rem;font-weight:900;margin-bottom:1rem;-webkit-user-select:none;user-select:none}.white{background-color:#fffbf1;color:#121212;width:var(--white-width);height:var(--white-height);z-index:1;margin:0 -.5px}.white:active,.white.pressed{background-color:#e9e4dc}.black{background-color:#1f1001;color:#f0f0f0;border:#000000;width:var(--black-width);height:var(--black-height);z-index:30;margin-left:calc(-.5 * var(--black-width));margin-right:calc(-.5 * var(--black-width))}.black:active,.black.pressed{background-color:#2b221f;z-index:40}.black.playable{z-index:32}.cube-flip{--cube-depth: .6em;display:inline-grid;position:relative;perspective:800px;perspective-origin:center;cursor:pointer}.key-text{color:#301102}.piano-flip{perspective:8000px}.cube-flip__ghost{grid-area:1 / 1;visibility:hidden;white-space:pre;line-height:1;padding:.02em .08em;font:inherit;pointer-events:none}.cube-flip__cube{grid-area:1 / 1;display:grid;align-items:center;justify-items:center;position:relative;transform-style:preserve-3d;line-height:1}.cube-flip__face{grid-area:1 / 1;display:inline-flex;align-items:center;justify-content:center;backface-visibility:hidden;transform-style:flat;padding:.02em .08em;transition:opacity .12s ease}.settings-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;z-index:99}.settings-menu{position:fixed;top:-300px;left:50%;transform:translate(-50%);width:400px;max-width:90vw;background:#1a1a1a;border:2px solid #fff;border-top:none;padding:2rem;z-index:100;box-shadow:0 10px 30px #000c;transition:top .3s cubic-bezier(.25,1,.5,1);display:flex;flex-direction:column;gap:1.5rem}.settings-menu.open{top:0}.setting-item{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #333;padding-bottom:.5rem}.setting-label{font-weight:700;color:#888;font-size:.9rem}