*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #000;

  /* 禁止移动端文字选中和长按菜单 */
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;

  /* 禁止 iOS 橡皮筋回弹 */
  overscroll-behavior: none;
  touch-action: none;
}

#game-container {
  width: 100%;
  height: 100%;

  /* 适配 iOS 安全区（刘海屏） */
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

canvas {
  display: block;
}