.tab-bar {
  position: fixed;
  bottom: 50rpx;
  left: 50%;
  width: 600rpx;
  height: 100rpx;
  border-radius: 50rpx;
  transform: translateX(-50%); 
  background: #ffffff; 
  z-index: 9999;
}

.tab-item { 
  width: 25%;
  height: 100%;
  line-height: 100rpx;
  text-align: center;
  display: inline-block;
  font-size: 24rpx;
}

.tab-item.active {
  color: #FFC107;
}

.icon {
  width: 24px;
  height: 24px;
  margin-top: 6px;
}