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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #06070f;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
}

#stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 80% at 50% 0%, #141a38 0%, #080a18 55%, #04050c 100%);
}

#game {
  display: block;
  touch-action: none;
  -ms-touch-action: none;
  image-rendering: auto;
  box-shadow: 0 0 60px rgba(70, 110, 220, 0.22), 0 0 0 1px rgba(120, 150, 230, 0.12);
  border-radius: 6px;
  cursor: crosshair;
}