update style issue

src/styles/global.module.scss

@@ -1,4 +1,4 @@
-@import './variables.scss';
+@use './variables.scss' as *;
 // 导出变量
 :export {
   namespace: $namespace;

src/styles/index.scss

@@ -1,6 +1,6 @@
-@import './var.css';
-@import './FormCreate/index.scss';
-@import 'element-plus/theme-chalk/dark/css-vars.css';
+@use './var.css';
+@use './FormCreate/index.scss';
+@use 'element-plus/theme-chalk/dark/css-vars.css';
 
 .reset-margin [class*='el-icon'] + span {
   margin-left: 2px !important;