调整支付页面样式；移除 mdx 测试页面

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

@@ -28,6 +28,7 @@ import {Label} from '@/components/ui/label'
 import logo from '@/assets/logo.webp'
 import bg from './_assets/bg.webp'
 import {useProfileStore} from '@/components/providers/StoreProvider'
+import Link from 'next/link'
 
 export type LoginPageProps = {}
 
@@ -207,7 +208,9 @@ export default function LoginPage(props: LoginPageProps) {
     )}>
       <Image src={bg} alt="背景图" fill priority className="absolute -z-10 object-cover"/>
 
-      <Image src={logo} alt="logo" priority height={64} className="absolute top-8 left-8"/>
+      <Link href="/">
+        <Image src={logo} alt="logo" priority height={64} className="absolute top-8 left-8"/>
+      </Link>
 
       {/* 登录表单 */}
       <Card className="w-96 mx-4 shadow-lg">