refactor(style): 调整Tailwind CSS样式优先级

- 将main.css导入从文件开头移至Element Plus样式之后
- 在Tailwind导入后添加important关键字以提高样式优先级
- 确保全局样式在组件库样式之后正确应用

web/src/assets/main.css

@@ -1 +1 @@
-@import "tailwindcss";
+@import "tailwindcss" important;

web/src/main.ts

@@ -1,5 +1,3 @@
-import './assets/main.css'
-
 import {createApp} from 'vue'
 import {createPinia} from 'pinia'
 import persistedState from 'pinia-plugin-persistedstate';
@@ -8,6 +6,7 @@ import App from './App.vue'
 import router from './router'
 import ElementPlus from 'element-plus'
 import 'element-plus/dist/index.css'
+import './assets/main.css'
 
 const app = createApp(App)