:root{--sab:env(safe-area-inset-bottom,0px)}
  *{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
  html,body{width:100%;height:100%;overflow:hidden;background:#04050c}
  body{display:flex;align-items:center;justify-content:center;touch-action:none;
       padding-bottom:max(14px,var(--sab));
       user-select:none;-webkit-user-select:none;
       font-family:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC",sans-serif}
  #stage{position:relative;box-shadow:0 0 90px rgba(60,140,255,.25)}
  canvas{display:block;touch-action:none;cursor:pointer}