数据结构优化

client/src/components/admin/PostRelationModal.vue

@@ -1,5 +1,6 @@
 <template>
-  <div v-if="isOpen" class="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/50 backdrop-blur-sm" @click.self="close">
+  <Teleport to="body">
+    <div v-if="isOpen" class="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/50 backdrop-blur-sm" @click.self="close">
     <div class="bg-[#1a1a1a] border border-white/10 rounded-lg shadow-xl w-full max-w-2xl max-h-[90vh] overflow-hidden animate-reveal flex flex-col">
       <div class="p-4 border-b border-white/10 flex justify-between items-center shrink-0">
         <h3 class="text-lg font-serif italic text-white">管理文章关联</h3>
@@ -131,6 +132,7 @@
       </div>
     </div>
   </div>
+  </Teleport>
 </template>
 
 <script setup lang="ts">