style(StudyDetailPage): 调整文件信息容器的内边距

@@ -498,7 +498,7 @@
                             className="p-5 hover:bg-white/80 transition-all duration-300 hover:shadow-xl hover:scale-[1.02] transform"
                         >
                             <!-- 文件信息 -->
-                            <div class="flex items-start gap-4 mb-4">
+                            <div class="flex items-start gap-4 mb-4 p-2">
                                 <div class="w-12 h-12 bg-gradient-to-br from-blue-50 to-indigo-100 rounded-xl flex items-center justify-center flex-shrink-0 shadow-sm">
                                     <van-icon
                                         :name="getFileIcon(file.title || file.name)"