variables.scss不生效，直接写死css样式可以生效

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$sideBarWidth: 210px; // https://www.bluematador.com/blog/how-to-share-variables-between-js-and-sass // JS 与 scss 共享变量，在 scss 中通过 :export 进行导出，在 js 中可通过 ESM 进行导入 :export { menuText: $menuText; menuActiveText: $menuActiveText; subMenuActiveText: $subMenuActiveText; menuBg: $menuBg; menuHover: $menuHover; subMenuBg: $subMenuBg; subMenuHover: $subMenuHover; sideBarWidth: $sideBarWidth;

<template>
  <div class="app-wrapper">
    <!-- 左侧 menu -->
    <sidebar
      id="guide-sidebar"
      class="sidebar-container"
      :style="{ backgroundColor: variables.menuBg }"
    <div class="main-container">
      <div class="fixed-header">
        <!-- 顶部的 navbar -->
        <navbar />
      <!-- 内容区 -->
      <app-main />
</template>
<script setup>
import variables from '@/styles/variables.scss'
import Navbar from './components/Navbar'
import Sidebar from './components/Sidebar'
import AppMain from './components/AppMain'
import {} from 'vue'
</script>
<style lang="scss" scoped>
@import '~@/styles/mixin.scss';
@import '~@/styles/variables.scss';
.app-wrapper {
  @include clearfix;
  position: relative;
  height: 100%;
  width: 100%;
.fixed-header {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 9;
  width: calc(100% - #{$sideBarWidth});
</style>
  "name": "mall-admin",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  "dependencies": {
    "axios": "^0.26.1",
    "element-plus": "^2.1.7",
    "md5": "^2.3.0",
    "vue": "^3.2.13",
    "vue-router": "^4.0.3",
    "vuex": "^4.0.0"
  "devDependencies": {
    "@babel/core": "^7.12.16",
    "@babel/eslint-parser": "^7.12.16",
    "@vue/cli-plugin-babel": "~5.0.0",
    "@vue/cli-plugin-eslint": "~5.0.0",
    "@vue/cli-plugin-router": "~5.0.0",
    "@vue/cli-plugin-vuex": "~5.0.0",
    "@vue/cli-service": "~5.0.0",
    "@vue/eslint-config-standard": "^6.1.0",
    "core-js": "^3.21.1",
    "cz-customizable": "^6.3.0",
    "eslint": "^7.32.0",
    "eslint-plugin-import": "^2.25.3",
    "eslint-plugin-node": "^11.1.0",
    "eslint-plugin-promise": "^5.1.0",
    "eslint-plugin-vue": "^8.0.3",
    "lint-staged": "^11.1.2",
    "sass": "^1.32.7",
    "sass-loader": "^12.6.0",
    "svg-sprite-loader": "^6.0.11",
    "svgo-loader": "^2.2.2",
    "vue-cli-plugin-element-plus": "~0.0.13"
  "config": {
    "commitizen": {
      "path": "node_modules/cz-customizable"
  "gitHooks": {
    "pre-commit": "lint-staged"