wx-parent/custom-tab-bar/index.wxss

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100rpx;
  background-color: #ffffff;
  display: flex;
  justify-content: space-around;
  align-items: center;
  border-top: 1rpx solid #e5e5e5;
  z-index: 1000;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 10rpx 0;
  color: #7A7E83;
  font-size: 24rpx;
}

.tab-item.active {
  color: #409eff; /* 可自定义为 app.json 中配置的 selectedColor */
}

.tab-icon {
  width: 54rpx;
  height: 54rpx;
}