html,body,#app{width:100%;height:100%;margin:0;overflow:hidden;background:#17251f;touch-action:none;overscroll-behavior:none;font-family:Hiragino Sans,Yu Gothic,Meiryo,system-ui,sans-serif}body{position:fixed;inset:0}canvas{display:block;max-width:100%;max-height:100%}