<template>
  <div class="map-container">
    <navigationBar></navigationBar>
    <mars-map :options="options" @onload="mapLoad"></mars-map>
    <!-- 搜索 -->
    <div class="search-container" id="box">
      <div class="search-input flex-container">
        <div class="input-title">点位搜索:</div>
        <div class="input-box">
          <el-input
            v-model="queryParams.name"
            placeholder="请输入点位名称"
            clearable
          />
          <div class="result-popup" v-show="popupShow">
            <div class="list" v-if="list.length > 0">
              <div
                class="list-item"
                v-for="item in list"
                :key="item.id"
                @click="handleResultRow(item.id, item.lonLat, item.pointName)"
              >
                <div class="enterprise-name">{{ item.pointName }}</div>
                <div class="loaction-icon"></div>
              </div>
            </div>
            <div class="no-data" v-else>暂无搜索结果</div>
          </div>
        </div>
        <div class="search-bnt input-title" @click="getList()">搜索</div>
        <div
          class="search-bnt input-title"
          style="margin-left: 10px; padding: 5px 10px"
          @click="handlePointSelect()"
        >
          选择点位
        </div>
      </div>
    </div>

    <!-- 树形结构 -->
    <el-drawer
      v-model="drawer"
      title="点位选择"
      size="20%"
      :append-to-body="false"
    >
      <el-tree
        node-key="id"
        :props="props"
        :load="loadNode"
        lazy
        accordion
        @node-click="handleNodeClick"
      />
      <template #footer>
        <el-button type="primary" @click="finishTree">确定</el-button>
      </template>
    </el-drawer>
    <!-- 地图图层 -->
    <div class="map-layer">
      <div class="model flex-container">
        <div
          class="model-item"
          :class="currentModelIndex == index ? 'activeBtn' : ''"
          v-for="(item, index) in mapModel"
          :key="index"
          @click="changeModel(index)"
        >
          {{ item }}
        </div>
      </div>
      <div class="point flex-container">
        <div
          class="point-item"
          :class="currentIndex == index ? 'activeBtn' : ''"
          v-for="(item, index) in pointLayer"
          :key="index"
          @click="handlePointLayer(index, item.value)"
        >
          {{ item.name }}
        </div>
      </div>
    </div>

    <!-- 点位详情 -->
    <el-dialog
      v-model="dialogVisible"
      :title="info.pointName"
      width="30%"
      class="info-dialog"
    >
      <div class="info-box" ref="infoDialog">
        <div class="info-title">基本信息</div>
        <div class="info-row">
          <div class="row-lable">地址：</div>
          <div class="row-value">{{ info.address }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">办公时间：</div>
          <div class="row-value">{{ info.officeHours }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">联系电话：</div>
          <div class="row-value">{{ info.phone }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">封面：</div>
          <div class="row-value">
            <el-image
              class="info-image"
              fit="cover"
              v-if="info.image"
              :src="`${baseUrl}/api/yzt-data/file/image?name=${info.image}`"
              :preview-src-list="[
                `${baseUrl}/api/yzt-data/file/image?name=${info.image}`,
              ]"
            >
              <div slot="error" class="image-slot">
                <i class="el-icon-picture-outline"></i>
                <span>图片加载出错</span>
              </div>
            </el-image>
          </div>
        </div>

        <div
          class="info-title"
          v-show="info.yewuList && info.yewuList.length > 0"
        >
          办理业务
        </div>
        <div
          class="yewu-list"
          v-for="(item, index) in info.yewuList"
          :key="index"
        >
          <div class="yewu-title">{{ item.title }}</div>

          <div
            class="list-sub"
            v-for="(subItem, subIndex) in item.list"
            :key="subItem.id"
            @click="handleInfoByyewu(subItem.id)"
          >
            <div class="file-icon"></div>
            <div>{{ subIndex + 1 }}. {{ subItem.simpleName }}</div>
          </div>
        </div>
      </div>
    </el-dialog>

    <!-- 业务详情 -->
    <el-dialog
      width="30%"
      :title="businessInfo.businessName"
      v-model="innerVisible"
      class="info-dialog"
    >
      <div class="info-box" ref="businessDialog">
        <div class="info-row">
          <div class="row-lable">业务名称：</div>
          <div class="row-value">{{ businessInfo.businessName }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">业务简称：</div>
          <div class="row-value">{{ businessInfo.simpleName }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">申办条件：</div>
          <div class="row-value">{{ businessInfo.businessInstructions }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">申办要求：</div>
          <div class="row-value">{{ businessInfo.businessGuide }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">相关材料：</div>
          <div class="row-value value-list">
            <div v-for="(item, index) in businessInfo.formList" :key="item.id">
              <div class="value-list-title">{{ item.name }}</div>
              <div class="value-list-subTitle" @click="lookIamge(index)">
                参考样本
              </div>
            </div>
          </div>
        </div>
        <div class="info-row">
          <div class="row-lable">法定时限：</div>
          <div class="row-value">{{ businessInfo.legaltime }}</div>
        </div>
        <div class="info-row">
          <div class="row-lable">承诺时限：</div>
          <div class="row-value">{{ businessInfo.promisetime }}</div>
        </div>
      </div>

      <el-image-viewer
        v-if="showPreview"
        :url-list="businessInfo.srcList"
        show-progress
        :initial-index="initialIndex"
        @close="showPreview = false"
      />
    </el-dialog>
  </div>
</template>

<script setup name="Map">
import { h } from "vue";
import { ElNotification } from "element-plus";
import NavigationBar from "@/components/NavigationBar";
import marsMap from "@/components/marsMap";
import markerIcon from "@/assets/images/map-marker.png";
const { proxy } = getCurrentInstance();
import {
  getPointListByType,
  getPointList,
  getPointinfo,
  getdicts,
  getbusinessById,
  getEnterpriseTree,
} from "@/api/mapApi";
import { ref, reactive, onMounted, onUnmounted, nextTick } from "vue";

const baseUrl = import.meta.env.VITE_APP_BASE_API;
let options = reactive({
  scene: {
    center: {
      lat: 32.006053,
      lng: 120.899041,
      alt: 45187,
      heading: 0,
      pitch: -45,
    },
    showSun: false,
    showMoon: false,
    showSkyBox: false,
    showSkyAtmosphere: false,
    fog: false,
    backgroundColor: "#363635", // 天空背景色
    globe: {
      baseColor: "#363635", // 地球地面背景色
      showGroundAtmosphere: false,
      enableLighting: false,
    },
    clock: {
      currentTime: "2023-11-01 12:00:00", // 固定光照时间
    },
    cameraController: {
      zoomFactor: 1.5,
      minimumZoomDistance: 0.1,
      maximumZoomDistance: 200000,
      enableCollisionDetection: false, // 允许进入地下
    },
  },
  control: {
    toolbar: false,
    homeButton: false,
    zoom: false,
  },
  terrain: {
    show: false,
  },
  basemaps: [
    {
      id: 2017,
      pid: 10,
      name: "蓝色底图",
      icon: "https://data.mars3d.cn/img/thumbnail/basemap/my_blue.png",
      type: "gaode",
      layer: "vec",
      chinaCRS: "GCJ02",
      invertColor: true,
      filterColor: "#015CB3",
      brightness: 0.6,
      contrast: 1.8,
      gamma: 0.3,
      hue: 1,
      saturation: 0,
      show: true,
    },
  ],
});
const infoDialog = ref(null);
const businessDialog = ref(null);
//地图图层
const mapModel = reactive(["二维地图", "三维地图"]);
//图标类型图层
const pointLayer = reactive([
  { name: "服务点位", value: undefined },
  { name: "轨道交通警务站", value: "13" },
  { name: "巡防警务站", value: "04" },
]);

//查询条件
let queryParams = reactive({
  name: "",
  type: 0,
  lonLat: undefined,
});

let map = reactive({});
let mapLayer = reactive({});
let list = reactive([]);
let popupShow = ref(false);
let dictList = reactive([]);
let info = reactive({});
let businessInfo = reactive({});
const showPreview = ref(false);
let srcList = reactive([]);
let initialIndex = ref(0);

const dialogVisible = ref(false);
const innerVisible = ref(false);
let currentIndex = ref(null);
let currentModelIndex = ref(0);
//树形结构配置
let drawer = ref(false);
const props = {
  label: "simpleName",
  children: "zones",
  isLeaf: (data, node) => {
    return data.isLeaf == 1 ? false : true;
  },
};
let currentNodeKey = reactive({});

onMounted(() => {
  //字典
  getdictList();
  document.addEventListener("click", handleOutsideClick);
});
onUnmounted(() => {
  document.removeEventListener("click", handleOutsideClick);
});

/**
 *
 * @param index
 *
 */
const lookIamge = (index) => {
  initialIndex.value = index; //阅览的索引
  showPreview.value = true;
};

/**
 * 获取业务详情
 * @param id
 */
const handleInfoByyewu = async (id) => {
  const res = await getbusinessById({
    id,
    parent: info.parent,
  });
  res.data.srcList = [];
  if (res.data.formList.length > 0) {
    res.data.srcList = res.data.formList.map((item) => {
      return `${baseUrl}/api/yzt-data/file/otherImage?name=${item.exampleFile}&imgname=${item.name}`;
    });
  }

  businessInfo = res.data;
  innerVisible.value = true;

  nextTick(() => {
    scrollToTop(businessDialog.value);
  });
};

/**
 * 获取详情
 * @param id
 * @param lonLat
 */
const getInfo = async (id, lonLat) => {
  let res = await getPointinfo({
    id: id,
    lonLat: lonLat,
  });
  res.data.yewuList = [];
  for (let key in res.data.object) {
    res.data.yewuList.push({
      title: filterTypeName(key),
      list: res.data.object[key],
    });
  }

  return res.data;
};
/**
 * 字典翻译
 * @param key
 */
const filterTypeName = (key) => {
  if (!key) return;
  const index = dictList.findIndex((item) => item.value == key);
  if (index > -1) {
    return dictList[index].title;
  } else {
    return "未翻译到";
  }
};

/**
 * 单击查询结构
 * @param id
 * @param lonLat
 * @param pointName
 */
const handleResultRow = (id, lonLat, pointName) => {
  searchMarker(id, lonLat);
  popupShow.value = false;
};

/**
 * 检索图标
 * @param id
 * @param lonLat
 */
const searchMarker = async (id, lonLat) => {
  const info = await getInfo(id, lonLat);
  queryParams.name = info.pointName;
  //查询图标图层上是否存在，如果不存在就新增一个新图标
  const markerLength = mapLayer.markerLayer.length;
  const markerItem = mapLayer.markerLayer.getGraphicById(info.id);
  if (markerItem) {
    markerItem.openHighlight();
    map.flyToPoint(markerItem._point, {
      radius: 3000,
      duration: 1,
    });
  } else {
    initMarker(info, true, markerLength);
  }
};
/**
 * 渲染图标
 * @param item
 * @param flyTo
 * @param markerLength
 */
const initMarker = (item, flyTo = false, markerLength = 0) => {
  mapLayer.markerLayer.enabledEvent = false;
  const graphic = new mars3d.graphic.BillboardPrimitive({
    id: item.id,
    position: item.lonLat.split(","),
    style: {
      width: 35,
      height: 35,
      scale: 1,
      image: markerIcon,
      horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
      verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
      visibleDepth:false,
      label: {
        text: item.pointName,
        horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
        verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
        font_size: 14,
        color: "#fff",
        pixelOffsetY: -45,
        visibleDepth:false,
      },
      highlight: {
        type:'click',
        label: {
          
          outline: true,
          outlineColor: "yellow",
          outlineOpacity: 0.7,
        },
      },
    },
    flyTo: flyTo,
    flyToOptions: {
      radius: 3000,
      duration: 1,
    },
    attr: item,
  });
  mapLayer.markerLayer.addGraphic(graphic);
  mapLayer.markerLayer.enabledEvent = true; // 恢复事件

  //图标单击事件
  graphic.on(mars3d.EventType.click, async (event) => {
    const infoItem = event.target.attr;
    info = await getInfo(infoItem.id, infoItem.lonLat);
    queryParams.name = info.pointName;
    dialogVisible.value = true;

    nextTick(() => {
      scrollToTop(infoDialog.value);
    });
  });

  if (markerLength > 0) {
    graphic.openHighlight();
  }
};

/**
 * 监听搜索结果弹出层
 * @param event
 */
const handleOutsideClick = (event) => {
  const box = document.getElementById("box");
  if (popupShow.value && box && !box.contains(event.target)) {
    popupShow.value = false;
  }
};

/**
 * 点图层切换
 * @param index
 * @param value
 */
const handlePointLayer = (index, value) => {
  if (currentIndex.value != index) {
    currentIndex.value = index;
    getMarkerType(value);
  }
};

const getMarkerType = async (type) => {
  const res = await getPointListByType({ type });
  mapLayer.markerLayer.clear();
  res.data.map((item, index) => {
    if (index == 0) {
      map.flyToPoint(item.lonLat.split(","), {
        radius: 30738,
        duration: 1,
      });
    }
    initMarker(item);
  });
};
/**
 * 点位选择
 */
const handlePointSelect = () => {
  drawer.value = true;
};
/**
 * 懒加载树形结构
 * @param node
 * @param resolve
 */
const loadNode = async (node, resolve) => {
  if (node.level === 0) {
    // 获取第一层数据
    const res = await getEnterpriseTree();
    return resolve(res.data);
  }
  if (node.level > 0 && node.data.isLeaf == 0) return resolve([]);
  //其他层
  const treeItem = await getEnterpriseTree(node.level + 1, {
    parent: node.data.parent,
    child: node.data.child,
  });
  return resolve(treeItem.data);
};

/**
 * 树被单击
 * @param data
 */
const handleNodeClick = (data) => {
  currentNodeKey = data;
};
/**
 * 树结构选择完毕
 */
const finishTree = () => {
  if (!currentNodeKey.id) {
    proxy.$modal.msgError("该数据缺少唯一id!");
  } else {
    searchMarker(currentNodeKey.id, currentNodeKey.lonLat);
  }
  drawer.value = false;
};

/**
 * 二三维地图变化
 * @param index
 */
const changeModel = (index) => {
  if (currentModelIndex.value != index) {
    currentModelIndex.value = index;
    if (index == 1) {
      if (mapLayer.tiles3dLayer == undefined) {
        ElNotification({
          title: "渲染小提示！",
          message: h(
            "i",
            { style: "color: teal" },
            "首次加载三维模型需要一段时间，请耐心等待。"
          ),
        });
        mapLayer.tiles3dLayer = new mars3d.layer.TilesetLayer({
          name: "模型名称",
          url: import.meta.env.VITE_APP_ENV === "production" ?  "https://zwyth.ntgaj.cn:8008/B3dmqlh06/tileset.json" : "http://192.168.0.121:9090//B3dmqlh06/tileset.json",//本地nginx代理
          maximumScreenSpaceError: 16,
          maxMemory: 1024, // 最大缓存内存大小(MB)
          allowDrillPick: true,
          eventParent:true,
          matrixMove: {
            hasMiddle: false,
          },
          flyTo: true,
          // cacheBytes: 1073741824, // 1024MB = 1024*1024*1024 【重要】额定显存大小(以字节为单位)，允许在这个值上下波动。
          // maximumCacheOverflowBytes: 2147483648, // 2048MB = 2048*1024*1024 【重要】最大显存大小(以字节为单位)。
          // maximumMemoryUsage: 512, //【cesium 1.107+弃用】内存建议显存大小的50%左右，内存分配变小有利于倾斜摄影数据回收，提升性能体验
          // skipLevelOfDetail: true, //是Cesium在1.5x 引入的一个优化参数，这个参数在金字塔数据加载中，可以跳过一些级别，这样整体的效率会高一些，数据占用也会小一些。但是带来的异常是：1） 加载过程中闪烁，看起来像是透过去了，数据载入完成后正常。2，有些异常的面片，这个还是因为两级LOD之间数据差异较大，导致的。当这个参数设置false，两级之间的变化更平滑，不会跳跃穿透，但是清晰的数据需要更长，而且还有个致命问题，一旦某一个tile数据无法请求到或者失败，导致一直不清晰。所以我们建议：对于网络条件好，并且数据总量较小的情况下，可以设置false，提升数据显示质量。
          // loadSiblings: true, // 如果为true则不会在已加载完模型后，自动从中心开始超清化模型
          // cullRequestsWhileMoving: true,
          // cullRequestsWhileMovingMultiplier: 10, //【重要】 值越小能够更快的剔除
          // preferLeaves: true, //【重要】这个参数默认是false，同等条件下，叶子节点会优先加载。但是Cesium的tile加载优先级有很多考虑条件，这个只是其中之一，如果skipLevelOfDetail=false，这个参数几乎无意义。所以要配合skipLevelOfDetail=true来使用，此时设置preferLeaves=true。这样我们就能最快的看见符合当前视觉精度的块，对于提升大数据以及网络环境不好的前提下有一点点改善意义。
          // progressiveResolutionHeightFraction: 0.5, //【重要】 数值偏于0能够让初始加载变得模糊
          // dynamicScreenSpaceError: true, // true时会在真正的全屏加载完之后才清晰化模型
          // preloadWhenHidden: true, //tileset.show是false时，也去预加载数据
        });
        map.addLayer(mapLayer.tiles3dLayer);
      } else {
        mapLayer.tiles3dLayer.show = true;
        map.sceneOptionsmap({
          center: {
            lat: 31.967646,
            lng: 120.847855,
            alt: 1250,
            heading: 6.6,
            pitch: -18.8,
          },
        });
      }
    } else {
      if (mapLayer.tiles3dLayer) {
        mapLayer.tiles3dLayer.show = false;
      }
    }
  }
};

/**
 * 地图初始化完毕
 * @param mapInstance
 */
const mapLoad = (mapInstance) => {
  map = mapInstance;
  //创建marker图层
  mapLayer.markerLayer = new mars3d.layer.GraphicLayer({
    allowDrillPick: false, // 如果存在坐标完全相同的图标点，可以打开该属性，click事件通过graphics判断
  });
  map.addLayer(mapLayer.markerLayer);
};

/**
 * 根据关键字搜索
 */
const getList = async () => {
  if (!queryParams.name) {
    proxy.$modal.msgError("请先输入点位名称");
    return;
  }
  let res = await getPointList(queryParams);
  list = res.data;
  popupShow.value = true;
};

/**
 * 字典
 */
const getdictList = async () => {
  let res = await getdicts();
  dictList = res.result;
};

/**
 * 平滑滚动顶部
 */
const scrollToTop = (elementItem) => {
  if (elementItem) {
    elementItem.scrollTo({
      top: 0,
      behavior: "smooth",
    });
  }
};
</script>
<style scoped lang="scss">
.map-container {
  position: relative;
  height: 100%;

  background: #0059a2;
  .search-container {
    position: absolute;
    top: 150px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    background: rgba(15, 42, 79, 0.9);
    border: 1px solid #094edb;
    z-index: 100;
    padding: 13px 18px;
    .input-title {
      font-size: 16px;
      color: #fff;
    }
    .search-bnt {
      cursor: pointer;
      background: url("@/assets/images/btn_bg.png");
      padding: 5px 16px;
      background-size: 100% 100%;
    }
    .input-box {
      position: relative;
      flex: 1;
      margin: 0 10px;

      .result-popup {
        position: absolute;
        top: 55px;
        width: 100%;
        height: 500px;
        border: 1px solid 094edb;
        background-color: rgba(15, 42, 79, 0.9);
        border: 1px solid #094edb;
        border-radius: 4px;
        box-sizing: border-box;
        padding: 6px 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        .list {
          width: 100%;
          height: 100%;
          overflow-y: auto;
        }
        .no-data {
          font-size: 16px;
          color: #fff;
          letter-spacing: 1px;
        }
        .list-item {
          display: flex;
          align-items: center;
          justify-content: space-between;
          cursor: pointer;
          font-size: 16px;
          color: #fff;
          padding: 13px 6px;
          border-bottom: 1px solid rgba(3, 91, 178, 0.5);
          .loaction-icon {
            display: none;
            height: 25px;
            width: 25px;
            background: url("@/assets/images/loaction.png");
            background-size: 100% 100%;
          }
        }
        .list-item:hover {
          border-radius: 4px;
          background-color: #409eff;
          .loaction-icon {
            display: block;
          }
        }
      }
    }
  }

  .map-layer {
    position: absolute;
    right: 30px;
    bottom: 30px;
    .model {
      width: 55%;
      margin-left: auto;
      margin-bottom: 15px;
    }
    & > div {
      background: rgba(15, 42, 79, 0.9);
      border: 1px solid #094edb;
      & > div {
        position: relative;
        cursor: pointer;
        padding: 6px 15px;
        font-size: 16px;
        color: #fff;
      }
      & > div:not(:last-child)::after {
        position: absolute;
        top: 50%;
        right: 0;
        transform: translateY(-50%);
        content: "|";
        font-size: 14px;
        color: #409eff;
      }
      .activeBtn {
        background: #409eff;
      }
    }
  }
}

.flex-container {
  display: flex;
  align-items: center;
}
::v-deep .el-drawer {
  // width: 20% !important;
  background: rgba(15, 42, 79, 1);
  border: 1px solid #094edb;
  .el-drawer__header {
    color: #fff !important;
    font-weight: bold;
    font-size: 22px;
  }
  .drawer-btn {
    position: absolute;
    right: 20px;
    bottom: 20px;
  }
}
::v-deep .el-tree {
  background: transparent;
  color: #fff;
  font-size: 16px;
}
::v-deep .el-tree-node__content {
  padding-top: 20px !important;
  padding-bottom: 20px !important;
}
::v-deep .el-tree-node__content:hover {
  background: #409eff !important;
}
::v-deep .el-tree-node:focus > .el-tree-node__content {
  background: #409eff !important;
}

::v-deep .info-dialog {
  background: rgba(15, 42, 79, 1);
  border: 1px solid #094edb;
  .el-dialog__title,
  .el-dialog__close {
    color: #fff !important;
    font-weight: bold;
    font-size: 22px;
  }
  .info-title {
    font-size: 16px;
    color: #fff;
    font-weight: 550;
    margin-bottom: 15px;
  }
  .info-box {
    max-height: 500px;
    overflow-y: auto;
  }
  .info-row {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
    font-size: 14px;
    color: #fff;

    .row-lable {
      width: 75px;
      color: #9acfff;
    }
    .row-value {
      flex: 1;
    }
    .value-list {
      & > div {
        padding: 10px 0;

        display: flex;
        align-items: center;
        justify-content: space-between;
        border-bottom: 1px solid rgba(3, 91, 178, 0.5);
        .value-list-title {
          flex: 1;
        }
        .value-list-subTitle {
          color: #094edb;
          margin-left: 3px;
          cursor: pointer;
        }
      }
    }
  }
  ::v-deep .image-slot {
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    border: 1px solid #094edb;
  }

  .yewu-list {
    .yewu-title {
      margin: 15px 0;
      font-size: 15px;
      color: #fff;
      border-left: 5px solid #409eff;
      padding-left: 10px;
    }
    .list-sub {
      cursor: pointer;
      display: flex;
      align-items: center;
      font-size: 14px;
      color: #fff;
      padding: 10px 0;
      border-bottom: 1px solid rgba(3, 91, 178, 0.5);
    }
    .file-icon {
      margin-right: 10px;
      height: 20px;
      width: 20px;
      background: url("@/assets/images/file.png");

      background-size: 100% 100%;
    }
  }
}

// 滚动条
/* 设置滚动条整体样式 */
::-webkit-scrollbar {
  width: 8px; /* 滚动条宽度 */
}

/* 设置滚动条轨道 */
::-webkit-scrollbar-track {
  background: transparent; /* 轨道背景颜色 */
}

/* 设置滚动条滑块 */
::-webkit-scrollbar-thumb {
  background: #094edb; /* 滑块背景颜色 */
  border-radius: 5px; /* 滑块圆角 */
}

/* 鼠标悬停在滑块上时的样式 */
::-webkit-scrollbar-thumb:hover {
  background: #02a1cb; /* 悬停时滑块背景颜色 */
}
</style>
