diff --git a/platform/frontend/index.html b/platform/frontend/index.html
index 2f98b3d..a0101a4 100644
--- a/platform/frontend/index.html
+++ b/platform/frontend/index.html
@@ -89,7 +89,7 @@
               </div>
             </div>
           </div>
-          <div v-if="currentPage === 'topics'" style="margin-left: 160px; width: calc(100vw - 160px); padding: 0 20px; box-sizing: border-box; overflow-x: auto;">
+          <div v-if="currentPage === 'topics'" style="margin-left: 160px; width: 100%; max-width: calc(100vw - 160px); padding: 0 20px; box-sizing: border-box; overflow-x: auto;">
             <div class="flex justify-between items-center mb-6" style="width: 100%;"><h2 class="text-2xl font-bold text-gray-800">📋 选题管理</h2></div>
             <div class="card mb-6" style="display: inline-block; min-width: fit-content;"><div class="flex flex-wrap gap-2 items-center">
               <el-button type="primary" size="small" @click="refreshAll">🔄 批量刷新</el-button>