html,body{width:100%;height:100%;margin:0;overflow:hidden;background:#111827;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}#app{width:100vw;height:100vh}canvas{-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;touch-action:none}