updata:admin.css替用

frontend/app/features/admin/UserMultiSelect.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useState, useRef } from "react";
 
 import { type Employee } from "../../services/api";
+import { adminToolbarInputClass } from "./adminUi";
 
 // 多选用户下拉框组件 - 带 tag 显示
 export function UserMultiSelect({
@@ -47,7 +48,7 @@ export function UserMultiSelect({
     <div ref={containerRef} style={{ position: "relative" }}>
       {/* 选择框 - 显示 tag */}
       <div
-        className="admin-toolbar__input"
+        className={adminToolbarInputClass}
         onClick={() => setIsOpen(!isOpen)}
         style={{
           display: "flex",