html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  cursor: default;
  background-color: #07080f; /* 与游戏深空背景同色，适配留白时无白边 */
  font-family: Helvetica, Verdana, Arial, sans-serif;
}

body,
canvas,
div {
  outline: none;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

#GameDiv,
#Cocos3dGameContainer,
#GameCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* AdSense 网页级横幅：默认折叠（无广告时不占用空间，不留空条）
   广告填充后 html.with-ad 展开横幅占 60px，游戏同步让出空间 */
#ad-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0;
  max-height: 0;
  background: #07080f;
  z-index: 9998;
  overflow: hidden;
}
html.with-ad #ad-banner {
  height: 60px;
  max-height: 60px;
}
html.with-ad #GameDiv,
html.with-ad #Cocos3dGameContainer,
html.with-ad #GameCanvas {
  height: calc(100% - 60px);
}
#ad-banner .adsbygoogle {
  display: inline-block;
  width: 100% !important;
  height: 60px !important;
  max-height: 60px !important;
  margin: 0 auto;
  text-align: center;
}

canvas {
  background-color: rgba(0, 0, 0, 0);
}