#clouds-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.6; /* 更高透明度，使文字更清晰 */
}

#birds-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.6;
}

/* #halo-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;  // 置于其他背景下方
    opacity: 0.5;  // 调整透明度
} */

body {
  background: transparent !important;
}