body{margin:0;padding:0;overflow:hidden;background-color:#000;color:#fff;font-family:Arial,sans-serif}#gameCanvas{display:block;width:100vw;height:100vh;image-rendering:-moz-crisp-edges;image-rendering:-webkit-optimize-contrast;image-rendering:pixelated;image-rendering:optimize-contrast}#controls{display:none;gap:10px;margin-bottom:20px}.control-btn{width:80px;height:80px;background-color:#333;color:#fff;border:none;border-radius:50%;font-size:24px;display:flex;justify-content:center;align-items:center;-webkit-user-select:none;user-select:none}.control-btn:active{background-color:#555}#instructions{margin:10px;text-align:center}