update: style

frontend/app/features/admin/ProjectMembersDrawer.tsx

@@ -1,5 +1,6 @@
 import { type Workspace, type WorkspaceMember } from "../../services/api";
 import { Plus, X } from "lucide-react";
+import { primaryGradientButtonClass } from "~/components/common/buttonClasses";
 
 export function ProjectMembersDrawer({
   open,
@@ -75,7 +76,7 @@ export function ProjectMembersDrawer({
             共 {members.length} 名成员
           </span>
           <button
-            className="primary-button"
+            className={primaryGradientButtonClass}
             type="button"
             onClick={() => onAddMembers()}
             style={{ fontSize: 13, padding: "6px 12px" }}