:root{color:#f8fbff;background:#0e1730;font-family:Inter,Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}html,body,#shell{width:100%;min-width:320px;height:100%;min-height:100%;margin:0}body{display:grid;place-items:center;overflow:hidden;background:radial-gradient(circle at 50% 0%,rgba(83,151,255,.22),transparent 38%),linear-gradient(180deg,#10193a,#19275a 48%,#0f1730)}#shell{--game-top-gap: clamp(30px, 5vh, 42px);display:grid;place-items:start center;padding:var(--game-top-gap) 10px 10px}#game{width:min(576px,calc(100vw - 20px),calc((100vh - var(--game-top-gap) - 10px) * 9 / 16));aspect-ratio:9 / 16;max-height:calc(100vh - var(--game-top-gap) - 10px);overflow:hidden;border:1px solid rgba(255,255,255,.18);border-radius:8px;box-shadow:0 24px 80px #0000005c;background:#152451}canvas{display:block}