:root {
  --bg: #140a1f;
  --neon: #b96bff;
  --cyan: #4fe0d0;
  --gold: #ffcf5c;
}

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

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  overflow: hidden;
  font-family: "Segoe UI", system-ui, sans-serif;
  /* 移动端：禁止选中、长按菜单、下拉刷新/回弹 */
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  overscroll-behavior: none;
  touch-action: none;
}

#stage {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

#game {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
  box-shadow: 0 0 70px rgba(185, 107, 255, 0.28);
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

#hint {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(185, 107, 255, 0.55);
  font-size: 12px;
  letter-spacing: 1px;
  user-select: none;
  pointer-events: none;
}