数据结构优化

client/src/components/admin/AttachmentDetailModal.vue

@@ -1,5 +1,6 @@
 <template>
-  <div v-if="show" class="fixed inset-0 bg-black/50 flex items-center justify-center z-50" @click.self="handleClose">
+  <Teleport to="body">
+    <div v-if="show" class="fixed inset-0 bg-black/50 flex items-center justify-center z-50" @click.self="handleClose">
     <div class="admin-card max-w-2xl w-full mx-4 max-h-[90vh] overflow-y-auto">
       <div class="flex items-center justify-between mb-6">
         <h2 class="text-xl font-serif italic text-white">附件详情</h2>
@@ -90,6 +91,7 @@
       </div>
     </div>
   </div>
+  </Teleport>
 </template>
 
 <script setup lang="ts">