*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:#000;touch-action:none}#canvas{width:100vmin;height:100vmin;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);image-rendering:pixelated}#mode-indicator{position:fixed;top:16px;left:16px;color:#555;font-family:monospace;font-size:12px;pointer-events:none;z-index:10}