diff --git a/src/api/routes.py b/src/api/routes.py
index d24c725..33931c7 100644
--- a/src/api/routes.py
+++ b/src/api/routes.py
@@ -147,8 +147,8 @@ async def get_status(task_id: str, db_session: AsyncSession = Depends(get_db_ses
         "status": task.status,
         "progress": task.progress,
         "current_step": task.current_step,
-        "upload_time": task.created_time.isoformat() if task.created_time else "",
-        "completed_at": task.completed_time.isoformat() if task.completed_time else "",
+        "upload_time": task.created_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.created_time else "",
+        "completed_at": task.completed_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.completed_time else "",
         "error": task.error_message if task.error_message else ""
     }
 
@@ -205,7 +205,7 @@ async def get_file_history(db_session: AsyncSession = Depends(get_db_session)):
         file_groups[filename].append({
             "task_id": task.task_id,
             "filename": filename,
-            "upload_time": task.created_time.isoformat() if task.created_time else "",
+            "upload_time": task.created_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.created_time else "",
             "status": task.status,
             "file_size": stp_file.file_size
         })
@@ -260,9 +260,9 @@ async def get_file_records(filename: str, db_session: AsyncSession = Depends(get
             "task_id": task.task_id,
             "filename": stp_file.original_filename,
             "file_size": stp_file.file_size,
-            "upload_time": task.created_time.isoformat() if task.created_time else "",
+            "upload_time": task.created_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.created_time else "",
             "status": task.status,
-            "completed_at": task.completed_time.isoformat() if task.completed_time else ""
+            "completed_at": task.completed_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.completed_time else ""
         })
     
     # 按上传时间排序（最新的在前）
@@ -380,8 +380,8 @@ async def result_page(request: Request, task_id: str, db_session: AsyncSession =
         "status": task.status,
         "progress": task.progress,
         "current_step": task.current_step,
-        "upload_time": task.created_time.isoformat() if task.created_time else "",
-        "completed_at": task.completed_time.isoformat() if task.completed_time else "",
+        "upload_time": task.created_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.created_time else "",
+        "completed_at": task.completed_time.astimezone().strftime('%Y-%m-%d %H:%M:%S') if task.completed_time else "",
         "error": task.error_message if task.error_message else ""
     }
 
diff --git a/static/history.js b/static/history.js
index dee08a0..e2d9c47 100644
--- a/static/history.js
+++ b/static/history.js
@@ -56,8 +56,8 @@ function displayFileList(files) {
                 <div class="file-info">
                     <div class="file-name">📄 ${file.filename}</div>
                     <div class="file-meta">
-                        总记录: ${file.record_count} 条 | 
-                        最后上传: ${new Date(file.last_upload).toLocaleString()}
+                        总记录: ${file.record_count} 条 |
+                        最后上传: ${formatDateTime(file.last_upload)}
                     </div>
                 </div>
                 <button class="expand-btn" onclick="event.stopPropagation(); toggleFileRecords('${file.filename}')">
@@ -110,7 +110,7 @@ async function toggleFileRecords(filename) {
                 <div class="record-item" onclick="viewRecordDetails('${record.task_id}')">
                     <div class="record-header">
                         <div class="record-time">
-                            📅 ${new Date(record.upload_time).toLocaleString()}
+                            📅 ${formatDateTime(record.upload_time)}
                         </div>
                         <div class="record-status status-${record.status}">
                             ${getStatusText(record.status)}
@@ -120,7 +120,7 @@ async function toggleFileRecords(filename) {
                         <div>文件大小: ${formatFileSize(record.file_size)}</div>
                         <div>任务ID: ${record.task_id}</div>
                         <div>状态: ${record.status}</div>
-                        ${record.completed_at ? `<div>完成时间: ${new Date(record.completed_at).toLocaleTimeString()}</div>` : ''}
+                        ${record.completed_at ? `<div>完成时间: ${formatDateTime(record.completed_at)}</div>` : ''}
                     </div>
                 </div>
             `).join('');
@@ -186,6 +186,12 @@ function formatFileSize(bytes) {
     return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
 }
 
+function formatDateTime(dateString) {
+    if (!dateString) return 'N/A';
+    // 后端已经返回格式化的时间字符串，直接返回
+    return dateString;
+}
+
 // 跳转到上传页面
 async function goToUpload() {
     try {
diff --git a/static/style.css b/static/style.css
index c8073e3..f5872f4 100644
--- a/static/style.css
+++ b/static/style.css
@@ -173,11 +173,31 @@ body {
     gap: 12px;
 }
 
+/* 关键工艺参数三列布局 - 使用最高优先级 */
 .key-info-categories {
     display: grid !important;
     grid-template-columns: repeat(3, 1fr) !important;
-    gap: 20px;
-    margin-bottom: 20px;
+    gap: 20px !important;
+    margin-bottom: 20px !important;
+    width: 100% !important;
+}
+
+/* 确保所有子元素正确布局 */
+.key-info-categories > .category-section {
+    display: flex !important;
+    flex-direction: column !important;
+}
+
+.key-info-categories > .category-section .category-content {
+    display: flex !important;
+    flex-direction: column !important;
+    gap: 12px !important;
+}
+
+/* 覆盖 result.html 内联样式 */
+.result-section .key-info-categories {
+    display: grid !important;
+    grid-template-columns: repeat(3, 1fr) !important;
 }
 
 .data-grid {
diff --git a/templates/result.html b/templates/result.html
index b357c81..65c3280 100644
--- a/templates/result.html
+++ b/templates/result.html
@@ -5,7 +5,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>分析结果 - STP文件几何分析工具</title>
-    <link rel="stylesheet" href="/static/style.css?v=10">
+    <link rel="stylesheet" href="/static/style.css?v=12">
     <style>
         .result-container {
             max-width: 1200px;
diff --git a/templates/snapshot.html b/templates/snapshot.html
index f1e237b..40a7f54 100644
--- a/templates/snapshot.html
+++ b/templates/snapshot.html
@@ -5,7 +5,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>分析结果快照 - STP文件几何分析工具</title>
-    <link rel="stylesheet" href="/static/style.css?v=10">
+    <link rel="stylesheet" href="/static/style.css?v=12">
     <style>
         .snapshot-container {
             max-width: 1200px;