:root{font-family:system-ui,-apple-system,Hiragino Sans,Yu Gothic,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden;background:#0b1026;touch-action:none;overscroll-behavior:none}#app{padding:max(env(safe-area-inset-top),0px) max(env(safe-area-inset-right),0px) max(env(safe-area-inset-bottom),0px) max(env(safe-area-inset-left),0px);display:grid;place-items:center}#game{width:100%;height:100%;display:grid;place-items:center}canvas{max-width:100%;max-height:100%;display:block}#portrait-notice{display:none;position:fixed;z-index:10;inset:0;margin:0;background:#121936;color:#fff;place-items:center;text-align:center;font-size:clamp(20px,5vw,34px);padding:2rem}@media(orientation:landscape)and (max-height:600px){#portrait-notice{display:grid}#game{visibility:hidden}}@media(prefers-reduced-motion:reduce){canvas{scroll-behavior:auto}}