/* 全屏背景图片设置 */
#web_bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('/img/bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  z-index: -999;
}

/* 禁用所有其他背景效果 */
#canvas_ribbon,
.canvas_ribbon,
canvas {
  display: none !important;
}

/* 背景宇宙星光效果（如果需要的话） */
#universe{
    display: none !important;
}