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

html, body {
  height: 100%;
  background: #2a1b3d;
  overflow: hidden;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

#stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 50% 0%, #4a3268 0%, #2a1b3d 70%);
}

#game {
  display: block;
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  box-shadow: 0 18px 60px rgba(0,0,0,.55);
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
}