:root{color-scheme:dark;--accent:#65ffcf;--muted:#8991a9}*{box-sizing:border-box}body{margin:0;background:#080b16;color:#f4f6ff;font-family:Arial,'Apple SD Gothic Neo',sans-serif}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:5px}header{height:78px;border-bottom:1px solid #1c2235;padding:0 5%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:2px;font-weight:800;text-decoration:none;color:#fff}.brand b{color:#747e9a;font-size:10px}.logo{color:var(--accent);font-size:34px}.top-actions{display:flex;gap:8px}.top-actions button{background:#111626;border:1px solid #252d43;border-radius:8px;min-width:38px;height:36px;font-size:14px}#sound{padding:0 12px;font-size:11px}main{max-width:1192px;margin:auto;padding:42px 36px 20px}.intro{position:relative;margin-bottom:26px}.eyebrow{font-size:9px;letter-spacing:2.8px;color:#b3bbcd;font-weight:bold}.eyebrow i,.status-dot{display:inline-block;background:var(--accent);width:5px;height:5px;border-radius:50%;margin-right:8px;box-shadow:0 0 9px var(--accent)}h1{font-size:clamp(29px,4vw,49px);letter-spacing:-1.9px;margin:14px 0 9px;font-weight:950}h1 span{color:var(--accent)}h1 sup{vertical-align:middle;display:inline-block;margin-left:16px;font-size:9px;letter-spacing:2px;border:1px solid #384155;border-radius:4px;padding:7px;color:#c4ccdc}.intro p{color:var(--muted);font-size:13px;margin:0}.stage{position:relative;aspect-ratio:2.37;min-height:330px;overflow:hidden;border:1px solid #2b3652;border-radius:14px;box-shadow:0 20px 80px #0005;background:#10172c;touch-action:none}canvas{width:100%;height:100%;display:block;outline:none}.hud{position:absolute;top:22px;left:24px;right:24px;display:flex;align-items:center;gap:20px;pointer-events:none;font-size:10px;letter-spacing:1.5px;font-weight:bold}.progress-track{height:5px;flex:1;background:#ffffff12;border-radius:5px;overflow:hidden}.progress-track div{height:100%;background:var(--accent);width:0;box-shadow:0 0 14px var(--accent)}#percent{width:35px;text-align:right;color:var(--accent)}.level-tag{position:absolute;top:52px;left:24px;display:flex;gap:14px;color:#8796b7;letter-spacing:2px;font-size:8px}.stage-bottom{position:absolute;bottom:17px;left:24px;right:24px;display:flex;justify-content:space-between;color:#afbad2;font-size:8px;letter-spacing:1.8px;pointer-events:none}.overlay{position:absolute;inset:70px 0 38px;display:grid;place-items:center;background:linear-gradient(90deg,#0c122b00,#0c122bd0 40%,#0c122bd0 60%,#0c122b00)}.overlay[hidden]{display:none}.panel{text-align:center;width:290px}.badge{color:var(--accent);font-size:9px;letter-spacing:2.2px;margin-bottom:16px}.cube-icon{width:47px;height:47px;background:var(--accent);border:3px solid #d7fff1;box-shadow:0 0 35px #65ffcf44;transform:rotate(-12deg);position:relative;margin:0 auto 20px}.cube-icon i{position:absolute;top:10px;width:8px;height:10px;background:#102b2c;left:7px}.cube-icon i+i{left:25px}.cube-icon b{position:absolute;width:20px;height:5px;left:10px;bottom:7px;background:#102b2c}h2{margin:0 0 9px;font-size:28px;letter-spacing:-1px}.panel p{color:#9faac3;font-size:11px;margin:0 0 19px}.primary{border:0;border-radius:7px;background:var(--accent);color:#062a25;font-size:14px;font-weight:800;padding:13px 24px;min-width:204px;box-shadow:0 5px 25px #65ffcf20}.primary span{margin-left:65px;font-size:11px}.panel .hint{font-size:8px;letter-spacing:1px;margin:15px 0 0;color:#7483a3}.under-stage{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:18px 0 28px}.under-stage p{font-size:10px;color:#8c95ad;margin:0;line-height:2}.under-stage p span{padding:0 7px;color:#394259}kbd{border:1px solid #30384e;border-radius:4px;padding:3px 6px;color:#bdc7df;font-size:9px}.practice{display:flex;align-items:center;gap:7px;white-space:nowrap;font-size:11px}.practice input{accent-color:var(--accent)}.practice small{color:#69758e;font-size:9px}.section-label{font-size:9px;letter-spacing:2px;color:#a2aec7;display:flex;justify-content:space-between;margin:0 0 14px}.section-label span{color:#56617a;font-size:8px}.tracks{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.track{display:flex;align-items:center;gap:14px;background:#101522;border:1px solid #232c40;border-radius:9px;text-align:left;padding:21px 17px;transition:border .2s,background .2s}.track.selected{border-color:var(--accent);background:#102324}.track-num{font-size:22px;font-weight:bold;color:#47546c}.selected .track-num{color:var(--accent)}.track-info{flex:1}.track strong{display:block;font-size:11px;letter-spacing:1px}.track small{display:block;font-size:10px;color:#77849f;margin-top:8px}.track em{font-size:8px;font-style:normal;margin-left:7px;background:#ffffff09;padding:3px 5px;border-radius:3px;color:#adb8cc}.track-best{font-size:10px;color:#8e9bb5}.track-arrow{color:#54637d;font-size:18px}footer{display:flex;justify-content:space-between;gap:20px;margin-top:30px;color:#4c5870;font-size:8px;letter-spacing:1px}@media(min-width:1500px){main{padding-top:60px}}@media(max-width:700px){header{height:60px;padding:0 18px}.brand{font-size:10px;letter-spacing:1px}.brand b{display:none}main{padding:25px 16px 16px}h1{letter-spacing:-1px}h1 sup{margin-left:8px;font-size:7px;letter-spacing:1px;padding:5px}.intro{margin-bottom:22px}.eyebrow{font-size:8px;letter-spacing:1.5px}.stage{min-height:340px;aspect-ratio:1.4}.hud{left:16px;right:16px;gap:12px;font-size:8px}.level-tag{left:16px}.under-stage{align-items:flex-start;flex-direction:column;gap:10px;padding-bottom:24px}.under-stage p{font-size:9px}.tracks{grid-template-columns:1fr;gap:8px}.track{padding:16px}.track strong{font-size:12px}.track small{margin-top:5px}.track-info{display:flex;justify-content:space-between;align-items:center;gap:10px}.track-num{font-size:19px}.track-best{min-width:27px}footer{margin-top:22px;font-size:7px}footer span:last-child{text-align:right;max-width:150px;line-height:1.7}}
.stage{width:100%;min-width:0}canvas{min-width:0}.stage:fullscreen{width:100vw;height:100dvh;aspect-ratio:auto;border:0;border-radius:0}