diff --git a/.idea/misc.xml b/.idea/misc.xml
index c082a1e..d803985 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -8,6 +8,55 @@
       </list>
     </option>
   </component>
+  <component name="NullableNotNullManager">
+    <option name="myDefaultNullable" value="org.jetbrains.annotations.Nullable" />
+    <option name="myDefaultNotNull" value="org.jetbrains.annotations.NotNull" />
+    <option name="myOrdered" value="false" />
+    <option name="myNullables">
+      <value>
+        <list size="16">
+          <item index="0" class="java.lang.String" itemvalue="org.jspecify.annotations.Nullable" />
+          <item index="1" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
+          <item index="2" class="java.lang.String" itemvalue="android.annotation.Nullable" />
+          <item index="3" class="java.lang.String" itemvalue="androidx.annotation.Nullable" />
+          <item index="4" class="java.lang.String" itemvalue="com.android.annotations.Nullable" />
+          <item index="5" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="6" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNullable" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.Nullable" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableDecl" />
+          <item index="9" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableType" />
+          <item index="10" class="java.lang.String" itemvalue="org.eclipse.jdt.annotation.Nullable" />
+          <item index="11" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
+          <item index="12" class="java.lang.String" itemvalue="jakarta.annotation.Nullable" />
+          <item index="13" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
+          <item index="14" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
+          <item index="15" class="java.lang.String" itemvalue="org.springframework.lang.Nullable" />
+        </list>
+      </value>
+    </option>
+    <option name="myNotNulls">
+      <value>
+        <list size="16">
+          <item index="0" class="java.lang.String" itemvalue="org.jspecify.annotations.NonNull" />
+          <item index="1" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
+          <item index="2" class="java.lang.String" itemvalue="android.annotation.NonNull" />
+          <item index="3" class="java.lang.String" itemvalue="androidx.annotation.NonNull" />
+          <item index="4" class="java.lang.String" itemvalue="com.android.annotations.NonNull" />
+          <item index="5" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+          <item index="6" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNonNull" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.NonNull" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullDecl" />
+          <item index="9" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullType" />
+          <item index="10" class="java.lang.String" itemvalue="org.eclipse.jdt.annotation.NonNull" />
+          <item index="11" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
+          <item index="12" class="java.lang.String" itemvalue="jakarta.annotation.Nonnull" />
+          <item index="13" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
+          <item index="14" class="java.lang.String" itemvalue="lombok.NonNull" />
+          <item index="15" class="java.lang.String" itemvalue="org.springframework.lang.NonNull" />
+        </list>
+      </value>
+    </option>
+  </component>
   <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
diff --git a/exam-vue/src/layout/index.vue b/exam-vue/src/layout/index.vue
index 5b50991..735f11e 100644
--- a/exam-vue/src/layout/index.vue
+++ b/exam-vue/src/layout/index.vue
@@ -63,8 +63,8 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-  @import "@/styles/mixin.scss";
-  @import "@/styles/variables.scss";
+  @use "@/styles/mixin.scss" as *;
+  @use "@/styles/variables.scss" as *;
 
   .app-wrapper {
     @include clearfix;
diff --git a/exam-vue/src/styles/btn.scss b/exam-vue/src/styles/btn.scss
index 053eb11..c045038 100644
--- a/exam-vue/src/styles/btn.scss
+++ b/exam-vue/src/styles/btn.scss
@@ -3,7 +3,7 @@
 // @author D吕贺034244311
 // @date 20260615
 // ========================================
-@import './variables.scss';
+@use './variables.scss' as v;
 
 @mixin colorBtn($color) {
   background: $color;
@@ -19,31 +19,31 @@
 }
 
 .blue-btn {
-  @include colorBtn($blue)
+  @include colorBtn(v.$blue)
 }
 
 .light-blue-btn {
-  @include colorBtn($light-blue)
+  @include colorBtn(v.$light-blue)
 }
 
 .red-btn {
-  @include colorBtn($red)
+  @include colorBtn(v.$red)
 }
 
 .pink-btn {
-  @include colorBtn($pink)
+  @include colorBtn(v.$pink)
 }
 
 .green-btn {
-  @include colorBtn($green)
+  @include colorBtn(v.$green)
 }
 
 .tiffany-btn {
-  @include colorBtn($tiffany)
+  @include colorBtn(v.$tiffany)
 }
 
 .yellow-btn {
-  @include colorBtn($yellow)
+  @include colorBtn(v.$yellow)
 }
 
 .pan-btn {
diff --git a/exam-vue/src/styles/index.scss b/exam-vue/src/styles/index.scss
index fd8f4b5..ef96cb5 100644
--- a/exam-vue/src/styles/index.scss
+++ b/exam-vue/src/styles/index.scss
@@ -3,12 +3,12 @@
 // @author D吕贺034244311
 // @date 20260615
 // ========================================
-@import './variables.scss';
-@import './mixin.scss';
-@import './transition.scss';
-@import './element-ui.scss';
-@import './sidebar.scss';
-@import './btn.scss';
+@use './variables.scss' as *;
+@use './mixin.scss' as *;
+@use './transition.scss';
+@use './element-ui.scss';
+@use './sidebar.scss';
+@use './btn.scss';
 
 body {
   height: 100%;
diff --git a/exam-vue/src/styles/sidebar.scss b/exam-vue/src/styles/sidebar.scss
index 4ab55e7..fdc9e75 100644
--- a/exam-vue/src/styles/sidebar.scss
+++ b/exam-vue/src/styles/sidebar.scss
@@ -3,19 +3,21 @@
 // @author D吕贺034244311
 // @date 20260615
 // ========================================
+@use './variables.scss' as v;
+
 #app {
 
   .main-container {
     min-height: 100%;
     transition: margin-left .28s;
-    margin-left: $sideBarWidth;
+    margin-left: v.$sideBarWidth;
     position: relative;
   }
 
   .sidebar-container {
     transition: width 0.28s;
-    width: $sideBarWidth !important;
-    background-color: $menuBg;
+    width: v.$sideBarWidth !important;
+    background-color: v.$menuBg;
     height: 100%;
     position: fixed;
     font-size: 0px;
@@ -72,21 +74,21 @@
     .submenu-title-noDropdown,
     .el-submenu__title {
       &:hover {
-        background-color: $menuHover !important;
+        background-color: v.$menuHover !important;
       }
     }
 
     .is-active>.el-submenu__title {
-      color: $subMenuActiveText !important;
+      color: v.$subMenuActiveText !important;
     }
 
     & .nest-menu .el-submenu>.el-submenu__title,
     & .el-submenu .el-menu-item {
-      min-width: $sideBarWidth !important;
-      background-color: $subMenuBg !important;
+      min-width: v.$sideBarWidth !important;
+      background-color: v.$subMenuBg !important;
 
       &:hover {
-        background-color: $subMenuHover !important;
+        background-color: v.$subMenuHover !important;
       }
     }
   }
@@ -145,7 +147,7 @@
   }
 
   .el-menu--collapse .el-menu .el-submenu {
-    min-width: $sideBarWidth !important;
+    min-width: v.$sideBarWidth !important;
   }
 
   // mobile responsive
@@ -156,14 +158,15 @@
 
     .sidebar-container {
       transition: transform .28s;
-      width: $sideBarWidth !important;
+      width: v.$sideBarWidth !important;
     }
 
     &.hideSidebar {
       .sidebar-container {
         pointer-events: none;
         transition-duration: 0.3s;
-        transform: translate3d(-$sideBarWidth, 0, 0);
+        $sw: v.$sideBarWidth;
+        transform: translate3d(-$sw, 0, 0);
       }
     }
   }
@@ -188,8 +191,8 @@
   .nest-menu .el-submenu>.el-submenu__title,
   .el-menu-item {
     &:hover {
-      // you can use $subMenuHover
-      background-color: $menuHover !important;
+      // you can use v.$subMenuHover
+      background-color: v.$menuHover !important;
     }
   }
 
diff --git a/exam-vue/src/views/login/components/LoginLayout.vue b/exam-vue/src/views/login/components/LoginLayout.vue
index 24bba83..8c2c074 100644
--- a/exam-vue/src/views/login/components/LoginLayout.vue
+++ b/exam-vue/src/views/login/components/LoginLayout.vue
@@ -44,7 +44,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import "@/styles/login.scss";
+@use "@/styles/login.scss";
 
 </style>
 
diff --git a/exam-vue/vite.config.js b/exam-vue/vite.config.js
deleted file mode 100644
index ee7de92..0000000
--- a/exam-vue/vite.config.js
+++ /dev/null
@@ -1,59 +0,0 @@
-import { defineConfig, loadEnv } from 'vite'
-import vue from '@vitejs/plugin-vue'
-import { createSvgIconsPlugin } from 'vite-plugin-svg-icons'
-import path from 'path'
-
-const resolve = (dir) => path.resolve(__dirname, dir)
-
-export default defineConfig(({ mode }) => {
-  const env = loadEnv(mode, process.cwd())
-
-  return {
-    plugins: [
-      vue(),
-      createSvgIconsPlugin({
-        iconDirs: [resolve('src/icons/svg')],
-        symbolId: 'icon-[name]'
-      })
-    ],
-    resolve: {
-      alias: {
-        '@': resolve('src')
-      }
-    },
-    define: {
-      'process.env': {}
-    },
-    server: {
-      port: 9527,
-      open: true
-    },
-    build: {
-      outDir: 'dist',
-      assetsDir: 'static',
-      sourcemap: false,
-      rollupOptions: {
-        output: {
-          chunkFileNames: 'static/js/[name]-[hash].js',
-          entryFileNames: 'static/js/[name]-[hash].js',
-          assetFileNames: 'static/[ext]/[name]-[hash].[ext]',
-          manualChunks(id) {
-            if (id.includes('node_modules')) {
-              if (id.includes('element-plus')) {
-                return 'chunk-elementPlus'
-              }
-              return 'chunk-libs'
-            }
-          }
-        }
-      }
-    },
-    css: {
-      preprocessorOptions: {
-        scss: {
-          charset: false
-        }
-      }
-    }
-  }
-})