恢复登录框布局

src/app/(auth)/login/page.tsx

@@ -248,11 +248,11 @@ export default function LoginPage(props: LoginPageProps) {
       </Link>
 
       {/* 登录表单 */}
-      <Card className="w-110 mx-4 shadow-lg">
+      <Card className="w-96 mx-4 shadow-lg relative z-20">
-        {/* <CardHeader className="text-center">
+        <CardHeader className="text-center">
           <CardTitle className="text-2xl">登录/注册</CardTitle>
-        </CardHeader> */}
+        </CardHeader>
-        <CardContent className="px-12 py-12">
+        <CardContent className="px-8">
           {/* 登录方式切换 */}
           <Tabs
             value={loginMode}