*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:radial-gradient(ellipse at center,#23233c,#0e0e1c 75%);font-family:Microsoft YaHei,PingFang SC,sans-serif;-webkit-tap-highlight-color:transparent;touch-action:none}#game-container{position:fixed;inset:0;display:flex;justify-content:center;align-items:center;width:100vw;height:100vh}canvas{display:block;touch-action:none;box-shadow:0 0 60px #000000a6;border-radius:10px}