diff --git a/frontend/app/components/admin/DashboardPage.tsx b/frontend/app/components/admin/DashboardPage.tsx
index ea6d16a..3c0a960 100644
--- a/frontend/app/components/admin/DashboardPage.tsx
+++ b/frontend/app/components/admin/DashboardPage.tsx
@@ -14,6 +14,8 @@ export function DashboardPage({
   onNavigate: (page: "scripts" | "schedules" | "system") => void;
 }) {
   const { user, currentWorkspace } = useAuth();
+  const isSystemAdmin = user?.is_system_admin ?? false;
+
   return (
     <section className="dashboard-page">
       <div className="dashboard-hero">
@@ -36,7 +38,9 @@ export function DashboardPage({
       <div className="dashboard-actions">
         <button type="button" onClick={() => onNavigate("scripts")}><Icon name="script" />构建脚本</button>
         <button type="button" onClick={() => onNavigate("schedules")}><Icon name="schedule" />调度配置</button>
-        <button type="button" onClick={() => onNavigate("system")}><Icon name="settings" />系统管理</button>
+        {isSystemAdmin && (
+          <button type="button" onClick={() => onNavigate("system")}><Icon name="settings" />系统管理</button>
+        )}
       </div>
       <div className="dashboard-grid">
         <section className="dashboard-panel dashboard-panel--trend">
diff --git a/frontend/app/components/admin/ProjectManagementPage.tsx b/frontend/app/components/admin/ProjectManagementPage.tsx
index 04cf2be..ccbb8e5 100644
--- a/frontend/app/components/admin/ProjectManagementPage.tsx
+++ b/frontend/app/components/admin/ProjectManagementPage.tsx
@@ -391,8 +391,8 @@ export function ProjectManagementPage({
               </div>
               <button className="icon-button" type="button" onClick={() => setImportMemberDialogOpen(false)}><Icon name="close" /></button>
             </div>
-            <div style={{ padding: "20px 24px 110px" }}>
-              <label className="form-field">
+            <form >
+              <label className="form-field"  style={{ paddingBottom: 120 }}>
                 <span>选择用户<span className="required">*</span></span>
                 <UserMultiSelect
                   users={availableUsers}
@@ -401,13 +401,13 @@ export function ProjectManagementPage({
                   existingMemberIds={currentProjectMembers.map((m) => m.user_id)}
                 />
               </label>
-            </div>
-            <div style={{ display: "flex", justifyContent: "flex-end", gap: "8px", padding: "16px 24px", borderTop: "1px solid #e8e8e8" }}>
-              <button className="secondary-button" type="button" onClick={() => setImportMemberDialogOpen(false)}>取消</button>
-              <button className="primary-button" type="button" disabled={saving || selectedUserIds.length === 0} onClick={() => void importMember()}>
-                {saving ? "添加中…" : `添加 (${selectedUserIds.length})`}
-              </button>
-            </div>
+              <div className="modal__footer">
+                <button className="secondary-button" type="button" onClick={() => setImportMemberDialogOpen(false)}>取消</button>
+                <button className="primary-button" type="button" disabled={saving || selectedUserIds.length === 0} onClick={() => void importMember()}>
+                  {saving ? "添加中…" : `添加 (${selectedUserIds.length})`}
+                </button>
+              </div>
+            </form>
           </section>
         </div>
       )}