:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: #e8f0ec;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  background: #e8f0ec;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  outline: 0;
}

#fatal {
  position: fixed;
  inset: 50% auto auto 50%;
  width: min(420px, calc(100% - 32px));
  padding: 18px 22px;
  transform: translate(-50%, -50%);
  border: 1px solid #d1483f;
  border-radius: 8px;
  background: #fff;
  color: #852b27;
  font-size: 18px;
  line-height: 1.6;
  text-align: center;
}

@media (max-width: 640px) {
  #fatal {
    font-size: 16px;
  }
}