* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  background: #10140f;
  overflow: hidden;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

#app {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 40%, #1d2a1a 0%, #0b0f0a 70%);
}

#game {
  display: block;
  background: #000;
  border-radius: 6px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .75), 0 0 0 2px rgba(120, 170, 80, .25);
  cursor: pointer;
  touch-action: none;
  image-rendering: auto;
}

#loading {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: #cfe8a8;
  font-size: 20px;
  letter-spacing: 1px;
  text-shadow: 0 2px 8px #000;
  pointer-events: none;
}