html,body,#game{background:#101319;width:100%;height:100%;margin:0;overflow:hidden}canvas{touch-action:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;display:block}#rotate-prompt{display:none}@media (orientation:portrait) and (pointer:coarse){#rotate-prompt{color:#f4f7fb;text-align:center;z-index:9999;background:#080b10;flex-direction:column;justify-content:center;align-items:center;gap:18px;padding:24px;font-family:Arial Black,Impact,sans-serif;font-size:22px;display:flex;position:fixed;inset:0}#rotate-prompt .rotate-icon{font-size:64px;animation:1.8s ease-in-out infinite rotate-hint}}@keyframes rotate-hint{0%,to{transform:rotate(0)}50%{transform:rotate(-90deg)}}