html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #05090b;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, -apple-system, sans-serif;
}

#stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 42%, #12241a 0%, #070d0a 62%, #03060a 100%);
}

canvas#game {
  display: block;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  border-radius: 6px;
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(120, 200, 150, 0.08);
  background: #070d0a;
}