:root{--bg-top:#143a52;--bg-bottom:#0b2233;--safe-top:env(safe-area-inset-top,0px);--safe-right:env(safe-area-inset-right,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-left:env(safe-area-inset-left,0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}html,body{overscroll-behavior:none;touch-action:none;background:linear-gradient(var(--bg-top), var(--bg-bottom));width:100%;height:100%;margin:0;padding:0;font-family:Courier New,monospace;overflow:hidden}body{position:fixed;top:0;bottom:0;left:0;right:0}#game{top:var(--safe-top);right:var(--safe-right);bottom:var(--safe-bottom);left:var(--safe-left);position:absolute}#game canvas{touch-action:none;image-rendering:pixelated;image-rendering:crisp-edges;outline:none;display:block}#rotate-hint{z-index:10;color:#ffe27a;letter-spacing:1px;text-transform:uppercase;text-align:center;background:#0b2233f5;justify-content:center;align-items:center;padding:16px;font-size:18px;font-weight:700;display:none;position:fixed;top:0;bottom:0;left:0;right:0}#rotate-hint.visible{display:flex}