diff --git a/src/accountAuthority.ts b/src/accountAuthority.ts
index b590cc9..d785ab2 100644
--- a/src/accountAuthority.ts
+++ b/src/accountAuthority.ts
@@ -2,7 +2,7 @@
 // 服务端授权仍是唯一权威——隐藏的入口经直连 API 调用同样会被拒绝。
 interface AccountIdentity { isAdmin?: boolean; isSuperAdmin?: boolean }
 
-export type AccountIdentityKind = 'super' | 'admin' | 'user'
+type AccountIdentityKind = 'super' | 'admin' | 'user'
 
 export const accountIdentityKind = (account: AccountIdentity): AccountIdentityKind =>
   account.isSuperAdmin ? 'super' : account.isAdmin ? 'admin' : 'user'
@@ -10,7 +10,7 @@ export const accountIdentityKind = (account: AccountIdentity): AccountIdentityKi
 /** 创建管理员账号与任命/撤销管理员仅对超级管理员开放。 */
 export const canAppointAdmins = (me: AccountIdentity | null | undefined) => !!me?.isSuperAdmin
 
-export interface AccountActionPolicy {
+interface AccountActionPolicy {
   /** 资料、角色与系统权限维护。 */
   maintain: boolean
   toggleEnabled: boolean