*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:#000;touch-action:none;-webkit-user-select:none;user-select:none}#app{width:100%;height:100%;position:relative}#game-container{width:100%;height:100%;display:flex;align-items:center;justify-content:center;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}#game-container canvas{display:block}#rotate-notice{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#000;color:#fff;flex-direction:column;align-items:center;justify-content:center;text-align:center;font-family:sans-serif;gap:.5rem}#rotate-notice .sub{font-size:.85rem;opacity:.6}@media(max-width:900px)and (orientation:portrait){#rotate-notice{display:flex}#game-container{visibility:hidden}}