:root{--ink:#183e43;--jade:#177666;--cream:#fff9e9;--paper:#f7f3e9;--line:#d9dfd2;--muted:#59716c;--gold:#e8ac3e;font-family:system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}body{margin:0}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{font:inherit;cursor:pointer}a{color:inherit;text-underline-offset:4px}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #ae6714;outline-offset:4px}[hidden]{display:none!important}
.soundbar{display:flex;align-items:center;flex-wrap:wrap;gap:8px 12px;padding:6px 16px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}.soundbar button{min-height:44px;padding:8px 12px;border:1px solid #adc5b6;border-radius:22px;color:var(--ink);background:#fff9e9}.soundbar button[aria-pressed="false"]{background:#edf0e7}.soundbar span{flex:1;min-width:115px}
.topbar{min-height:64px;padding:12px max(20px,calc((100vw - 1040px)/2));display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);font-size:13px}.topbar a{padding:10px 0;white-space:nowrap}.topbar span{font-size:10px;letter-spacing:.18em;color:var(--muted)}main{max-width:940px;margin:auto;padding:28px 24px 40px}.heading{text-align:center;margin-bottom:23px}.eyebrow{font-size:11px;letter-spacing:.18em;font-weight:750;color:var(--jade)}h1{font-size:clamp(46px,6vw,68px);letter-spacing:-.05em;line-height:1.1;margin:12px 0}h1 span{color:var(--jade)}h1 i{display:inline-block;margin-left:16px;font-size:.7em;color:var(--gold);font-style:normal}.lead{font-size:17px;letter-spacing:.08em;margin:12px 0 0}
.arena{max-width:700px;margin:auto;border:1px solid #c5d2c6;border-radius:25px;background:var(--cream);overflow:hidden;box-shadow:0 18px 45px #183e4310}.scoreboard{display:flex;align-items:center;gap:16px;padding:14px 24px;border-bottom:1px solid var(--line);height:64px}.scoreboard>span:first-child{font-size:14px;font-weight:750;flex:1}.scoreboard strong{font-size:27px;line-height:1}.scoreboard strong span{font-size:12px;font-weight:500}.scoreboard button{border:1px solid #adc5b6;border-radius:20px;padding:8px 15px;background:none;font-size:12px;min-height:36px}#ready-badge{font-size:10px;background:#e4eddc;padding:7px 12px;border-radius:20px}canvas{display:block;width:100%;height:auto;aspect-ratio:64/35;background:#f5ecd7}.progress{padding:12px 24px 0;font-size:12px;color:var(--muted);text-align:center}progress{display:block;width:100%;height:7px;margin-top:10px;accent-color:var(--jade);border:0}progress::-webkit-progress-bar{background:#e3e9d9;border-radius:10px}progress::-webkit-progress-value{background:var(--jade);border-radius:10px}.controls{text-align:center;padding:16px 30px 23px}.instruction{line-height:1.8;margin:0 0 15px;font-size:14px}.mode{display:flex;gap:18px;justify-content:center;font-size:13px;margin:14px 0 18px}.mode label{display:flex;align-items:center;gap:7px;min-height:32px}.mode input{accent-color:var(--jade);width:17px;height:17px}.primary{display:flex;width:100%;align-items:center;justify-content:center;gap:15px;min-height:54px;padding:14px 18px;border:0;border-radius:12px;background:var(--jade);color:white;font-size:18px;font-weight:750;text-decoration:none;box-shadow:0 4px 0 #104d41;transition:background .15s}.primary:hover{background:#0c6455}.primary:active{transform:translateY(2px);box-shadow:0 2px 0 #104d41}.primary small{font-size:10px;letter-spacing:.12em;opacity:.7}.primary:disabled{background:#668f80;cursor:default;transform:none;box-shadow:none}.small{font-size:11px;line-height:1.8;color:var(--muted);margin:14px 0 0}#feedback{font-size:15px;font-weight:700;min-height:23px;margin:0 0 15px}h2{font-size:27px;letter-spacing:-.03em;margin:12px 0}.text-button{border:0;background:none;color:var(--jade);padding:12px;margin-top:8px}.score{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:16px 0 22px}.score strong{font-size:60px;line-height:1;color:var(--jade)}.score span{font-size:12px;color:var(--muted)}.result-actions{display:flex;gap:12px;margin-top:16px}.result-actions button{flex:1;min-height:44px;border:1px solid #a6b9ab;background:none;color:var(--ink);border-radius:10px;font-size:13px}#copy-fallback{width:100%;height:70px;font:inherit;margin-top:12px}#copy-status{font-size:12px}.under-arena{max-width:700px;margin:19px auto;display:flex;justify-content:space-between;gap:16px;font-size:13px}.under-arena a{padding:8px 0}.rules{max-width:700px;margin:18px auto 45px;padding:17px 22px;border:1px solid var(--line);border-radius:12px;font-size:13px;line-height:1.85}.rules summary{cursor:pointer;font-weight:700}.rules a{font-weight:700;color:var(--jade)}.invite{text-align:center;border-top:1px solid var(--line);padding:36px 15px 30px;line-height:1.8}.invite h2{font-size:38px;line-height:1.3}.invite>p{font-size:13px}.invite>strong{font-size:16px}.invite .primary{max-width:390px;margin:20px auto 0;font-size:16px}footer{font-size:11px;line-height:1.9;border-top:1px solid var(--line);padding-top:22px;color:var(--muted)}footer b{display:block;color:var(--ink)}
@media(max-width:600px){.topbar{padding:8px 18px;min-height:54px;font-size:12px}.topbar span{display:none}main{padding:22px 14px 25px}.heading{margin-bottom:20px}.lead{font-size:14px}.scoreboard{height:52px;padding:10px 16px}.scoreboard strong{font-size:24px}.scoreboard>span:first-child{font-size:12px}.controls{padding:14px 18px 20px}.progress{padding:10px 18px 0}.arena{border-radius:18px}.under-arena{font-size:12px;gap:8px}.rules{margin-bottom:25px;padding:14px 17px}.invite{padding:25px 0}.invite h2{font-size:32px}.invite>strong{font-size:13px}.invite>p{font-size:12px}}
#celebration-replay{display:block;width:100%;min-height:46px;margin:0 0 16px;border:1px solid #c7a552;border-radius:12px;background:#fff0b4;color:var(--ink);font-size:16px;font-weight:750}
.rhythm{position:relative;height:24px;margin:8px 8px 18px;border-radius:12px;background:#e5e6d9;overflow:hidden}.rhythm-zone{position:absolute;left:var(--zone-left);width:var(--zone-width);height:100%;background:#65b982}.rhythm i{position:absolute;top:0;bottom:0;width:6px;background:#183e43;transform:translateX(-3px)}.rhythm[data-ready="true"]{box-shadow:0 0 0 2px #177666}.primary[data-perfect="true"]{background:#d8ed81;color:#183e43;box-shadow:0 4px 0 #7a9a39}.next-goal{background:#e8efde;border-radius:10px;padding:12px;font-size:14px;line-height:1.7}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
@media(min-width:950px){main{max-width:1100px;display:grid;grid-template-columns:250px minmax(0,700px);gap:22px 30px;align-items:start;padding-top:30px}.heading{grid-column:1;grid-row:1;text-align:left;padding-top:25px;margin:0}.heading h1{font-size:62px;max-width:240px;line-height:1.15}.heading h1 i{margin:10px 0 0}.heading .lead{font-size:15px;line-height:1.9}.arena{grid-column:2;grid-row:1 / span 2;width:100%}.rules{grid-column:1;grid-row:2;margin:0;padding:15px;font-size:12px}.under-arena{grid-column:2;width:100%;margin:0}.invite,footer,noscript{grid-column:1 / -1}.controls{padding-top:14px;padding-bottom:18px}.mode{margin:8px 0 12px}.instruction{margin-bottom:8px}}