:root{color-scheme:dark;background:#10131a;font-family:Arial,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#game{width:100%;min-height:100%;margin:0;overflow:hidden;background:#10131a}body{min-height:100dvh;display:grid;place-items:center;touch-action:manipulation}canvas{display:block;max-width:100%;max-height:100dvh}