html, body {
  margin: 0; padding: 0; height: 100%;
  background: #0b0b10;
  overflow: hidden;
  user-select: none;
}
#stage {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 50% 40%, #14141d 0%, #0b0b10 70%);
}
#game {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow: 0 0 80px rgba(90, 70, 160, 0.25), 0 0 22px rgba(0,0,0,0.8);
}
#game.cover-splash {
  image-rendering: auto;
  image-rendering: -webkit-optimize-contrast;
}