diff --git a/ln_jq_app/lib/pages/c_page/car_info/attachment_viewer_page.dart b/ln_jq_app/lib/pages/c_page/car_info/attachment_viewer_page.dart
index 666288c..40f24da 100644
--- a/ln_jq_app/lib/pages/c_page/car_info/attachment_viewer_page.dart
+++ b/ln_jq_app/lib/pages/c_page/car_info/attachment_viewer_page.dart
@@ -12,12 +12,12 @@ class AttachmentViewerPage extends GetView<AttachmentViewerController> {
   @override
   Widget build(BuildContext context) {
     Get.put(AttachmentViewerController());
-    final fileName = controller.url.split('/').last;
+    // final fileName = controller.url.split('/').last;
 
     return Scaffold(
       appBar: AppBar(
         title: Text(
-          fileName,
+          "证件详情",
           style: const TextStyle(fontSize: 16),
           overflow: TextOverflow.ellipsis,
         ),
diff --git a/ln_jq_app/lib/pages/c_page/car_info/certificate_viewer_controller.dart b/ln_jq_app/lib/pages/c_page/car_info/certificate_viewer_controller.dart
index b431d90..215ac78 100644
--- a/ln_jq_app/lib/pages/c_page/car_info/certificate_viewer_controller.dart
+++ b/ln_jq_app/lib/pages/c_page/car_info/certificate_viewer_controller.dart
@@ -6,7 +6,7 @@ import 'package:path_provider/path_provider.dart';
 
 import 'attachment_viewer_page.dart';
 
-class CertificateViewerController extends GetxController with BaseControllerMixin{
+class CertificateViewerController extends GetxController with BaseControllerMixin {
   late final String title;
   late final List<String> attachments;
 
@@ -78,18 +78,11 @@ class CertificateViewerController extends GetxController with BaseControllerMixi
       return;
     }
 
-    Get.to(
-          () => const AttachmentViewerPage(),
-      arguments: {
-        'url': url,
-      },
-    );
+    Get.to(() => const AttachmentViewerPage(), arguments: {'url': url});
   }
 
   /// 检查 URL 是否为 PDF (此方法保持不变)
   bool isPdf(String url) {
     return url.toLowerCase().endsWith('.pdf');
   }
-
-
 }
diff --git a/ln_jq_app/lib/pages/c_page/car_info/controller.dart b/ln_jq_app/lib/pages/c_page/car_info/controller.dart
index 22a7652..e0cabf2 100644
--- a/ln_jq_app/lib/pages/c_page/car_info/controller.dart
+++ b/ln_jq_app/lib/pages/c_page/car_info/controller.dart
@@ -2,10 +2,12 @@ import 'package:get/get.dart';
 import 'package:getx_scaffold/getx_scaffold.dart';
 import 'package:ln_jq_app/common/model/base_model.dart';
 import 'package:ln_jq_app/common/model/vehicle_info.dart';
+import 'package:ln_jq_app/pages/c_page/car_info/attachment_viewer_page.dart';
 import 'package:ln_jq_app/pages/qr_code/view.dart';
 import 'package:ln_jq_app/storage_service.dart';
-
+import 'package:path_provider/path_provider.dart';
 import 'certificate_viewer_page.dart';
+import 'dart:io';
 
 class CarInfoController extends GetxController with BaseControllerMixin {
   @override
@@ -117,6 +119,15 @@ class CarInfoController extends GetxController with BaseControllerMixin {
             parseAttachments(data['hydrogenationAttachment']),
           );
           registerAttachments.assignAll(parseAttachments(data['registerAttachment']));
+
+          // 初始化时开始加载所有PDF
+          attachments = [
+            ...drivingAttachments,
+            ...operationAttachments,
+            ...hydrogenationAttachments,
+            ...registerAttachments,
+          ];
+          loadAllPdfs();
         }
       }
       updateUi();
@@ -138,4 +149,69 @@ class CarInfoController extends GetxController with BaseControllerMixin {
       arguments: {'title': title, 'attachments': attachments},
     );
   }
+
+  /// 导航到通用的附件查看器页面
+  void openAttachment(String url) {
+    if (url.isEmpty) {
+      showErrorToast('附件链接无效');
+      return;
+    }
+
+    Get.to(() => const AttachmentViewerPage(), arguments: {'url': url});
+  }
+
+  /// 检查 URL 是否为 PDF
+  bool isPdf(String url) {
+    return url.toLowerCase().endsWith('.pdf');
+  }
+
+   List<String> attachments = [];
+
+  // --- 新增: 状态管理 ---
+  /// 用于存储网络PDF的本地路径，key是网络url，value是本地路径
+  final RxMap<String, String> localPdfPaths = <String, String>{}.obs;
+
+  /// 用于跟踪每个附件的加载状态，key是网络url
+  final RxMap<String, bool> isLoading = <String, bool>{}.obs;
+
+  /// 遍历所有附件，如果是PDF则进行下载
+  void loadAllPdfs() {
+    for (var url in attachments) {
+      if (isPdf(url)) {
+        _downloadPdf(url);
+      }
+    }
+  }
+
+  /// 下载单个PDF文件
+  Future<void> _downloadPdf(String url) async {
+    if (url.isEmpty) return;
+
+    // 开始加载
+    isLoading[url] = true;
+
+    try {
+      final dio = Dio();
+      final Directory tempDir = await getTemporaryDirectory();
+      final String savePath = '${tempDir.path}/${url.split('/').last}';
+
+      // 检查文件是否已存在，避免重复下载
+      if (await File(savePath).exists()) {
+        localPdfPaths[url] = savePath;
+        isLoading[url] = false;
+        return;
+      }
+
+      await dio.download(url, savePath);
+
+      // 下载成功后，更新本地路径
+      localPdfPaths[url] = savePath;
+    } catch (e) {
+      print('PDF download error for $url: $e');
+      // 出错时也可以更新状态，以便UI显示错误提示
+    } finally {
+      // 结束加载
+      isLoading[url] = false;
+    }
+  }
 }
diff --git a/ln_jq_app/lib/pages/c_page/car_info/view.dart b/ln_jq_app/lib/pages/c_page/car_info/view.dart
index 38e2bf5..d0ca30f 100644
--- a/ln_jq_app/lib/pages/c_page/car_info/view.dart
+++ b/ln_jq_app/lib/pages/c_page/car_info/view.dart
@@ -1,9 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_pdfview/flutter_pdfview.dart';
 import 'package:get/get.dart';
 import 'package:getx_scaffold/getx_scaffold.dart';
 import 'package:ln_jq_app/common/login_util.dart';
 import 'package:ln_jq_app/pages/c_page/message/view.dart';
 import 'package:ln_jq_app/storage_service.dart';
+import 'package:photo_view/photo_view.dart';
 
 import '../../../common/styles/theme.dart';
 import 'controller.dart';
@@ -18,21 +20,20 @@ class CarInfoPage extends GetView<CarInfoController> {
       id: 'car_info',
       builder: (_) {
         return Scaffold(
-          backgroundColor: Color.fromRGBO(240, 244, 247, 0.4),
+          backgroundColor: const Color.fromRGBO(240, 244, 247, 0.4),
           body: SingleChildScrollView(
             child: Column(
               children: [
                 _buildUserInfoCard(),
                 Padding(
-                  padding: const EdgeInsets.all(12.0),
+                  padding:  EdgeInsets.only(left: 20.w,right: 20.w),
                   child: Column(
                     crossAxisAlignment: CrossAxisAlignment.stretch,
                     children: [
-                      const SizedBox(height: 5),
+                      const SizedBox(height: 16),
                       _buildCarInfoCard(),
-                      const SizedBox(height: 5),
-                      _buildCertificatesCard(),
-                      const SizedBox(height: 5),
+                      _buildCertificatesCard(context),
+                      const SizedBox(height: 12),
                       _buildSafetyReminderCard(),
                     ],
                   ),
@@ -60,7 +61,6 @@ class CarInfoPage extends GetView<CarInfoController> {
         children: [
           Padding(
             padding: EdgeInsets.only(left: 20.w, right: 20.w, bottom: 16, top: 40),
-            // 增加了顶部 padding 适配状态栏
             child: Row(
               children: [
                 Stack(
@@ -102,15 +102,14 @@ class CarInfoPage extends GetView<CarInfoController> {
                               vertical: 2,
                             ),
                             decoration: BoxDecoration(
-                              color: const Color.fromRGBO(236, 255, 234, 1), // 极浅绿色背景
-                              border: Border.all(color: const Color(0xFFB7E19F)), // 边框
+                              color: const Color.fromRGBO(236, 255, 234, 1),
+                              border: Border.all(color: const Color(0xFFB7E19F)),
                               borderRadius: BorderRadius.circular(12),
                             ),
                             child: const Row(
                               mainAxisSize: MainAxisSize.min,
                               children: [
                                 Icon(Icons.eco, size: 12, color: Color(0xFF52C41A)),
-                                // 叶子图标
                                 SizedBox(width: 4),
                                 Text(
                                   "绿色先锋",
@@ -173,7 +172,6 @@ class CarInfoPage extends GetView<CarInfoController> {
     );
   }
 
-  // 统计项
   Widget _buildModernStatItem(String title, String subtitle, String value, String unit) {
     return Expanded(
       child: Container(
@@ -216,7 +214,6 @@ class CarInfoPage extends GetView<CarInfoController> {
     );
   }
 
-  /// 构建车辆信息卡片
   Widget _buildCarInfoCard() {
     return Card(
       elevation: 2,
@@ -227,13 +224,13 @@ class CarInfoPage extends GetView<CarInfoController> {
         child: Column(
           children: [
             _buildDetailRow('车牌号', controller.plateNumber, isPlate: true),
-            const SizedBox(height: 12),
+            const SizedBox(height: 11),
             _buildDetailRow('车架号', controller.vin),
-            const SizedBox(height: 12),
+            const SizedBox(height: 11),
             _buildDetailRow('车辆型号', controller.modelName),
-            const SizedBox(height: 12),
+            const SizedBox(height: 11),
             _buildDetailRow('车辆品牌', controller.brandName),
-            const SizedBox(height: 24),
+            const SizedBox(height: 10),
             _buildH2LevelProgress(),
           ],
         ),
@@ -241,7 +238,6 @@ class CarInfoPage extends GetView<CarInfoController> {
     );
   }
 
-  /// 详情行：左右分布
   Widget _buildDetailRow(String label, String value, {bool isPlate = false}) {
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
@@ -257,17 +253,21 @@ class CarInfoPage extends GetView<CarInfoController> {
                   margin: const EdgeInsets.only(right: 10),
                   padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
                   decoration: BoxDecoration(
-                    border: Border.all(color: Color.fromRGBO(71, 174, 208, 1)), // 浅绿色边框
+                    border: Border.all(color: const Color.fromRGBO(71, 174, 208, 1)),
                     borderRadius: BorderRadius.circular(12),
-                    color: Color.fromRGBO(235, 250, 255, 1), // 极浅绿色背景
+                    color: const Color.fromRGBO(235, 250, 255, 1),
                   ),
                   child: Row(
                     children: [
-                      Icon(Icons.sync, size: 12, color: Color.fromRGBO(71, 174, 208, 1)),
-                      SizedBox(width: 4),
+                      const Icon(
+                        Icons.sync,
+                        size: 12,
+                        color: Color.fromRGBO(71, 174, 208, 1),
+                      ),
+                      const SizedBox(width: 4),
                       Text(
                         StorageService.to.hasVehicleInfo ? "换车牌" : "扫码绑定",
-                        style: TextStyle(
+                        style: const TextStyle(
                           color: Color.fromRGBO(71, 174, 208, 1),
                           fontSize: 10,
                           fontWeight: FontWeight.bold,
@@ -291,17 +291,16 @@ class CarInfoPage extends GetView<CarInfoController> {
     );
   }
 
-  /// H2 Level 进度条模块
   Widget _buildH2LevelProgress() {
     return Column(
       children: [
         ClipRRect(
           borderRadius: BorderRadius.circular(4),
           child: const LinearProgressIndicator(
-            value: 0.75, // 示例值
+            value: 0.75,
             minHeight: 8,
             backgroundColor: Color(0xFFF0F2F5),
-            valueColor: AlwaysStoppedAnimation<Color>(Color(0xFF52C41A)),
+            valueColor: AlwaysStoppedAnimation<Color>(Color.fromRGBO(16, 185, 129, 1)),
           ),
         ),
         const SizedBox(height: 8),
@@ -313,7 +312,7 @@ class CarInfoPage extends GetView<CarInfoController> {
               "75%",
               style: TextStyle(
                 fontSize: 11,
-                color: Color(0xFF52C41A),
+                color: Color.fromRGBO(16, 185, 129, 1),
                 fontWeight: FontWeight.bold,
               ),
             ),
@@ -323,76 +322,195 @@ class CarInfoPage extends GetView<CarInfoController> {
     );
   }
 
-  /// 3. 构建车辆证件卡片
-  Widget _buildCertificatesCard() {
-    return Card(
-      elevation: 2,
-      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
-      child: Padding(
-        padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
-        child: Column(
-          children: [
-            _buildCertificateRow(
-              icon: Icons.credit_card_rounded,
-              title: '行驶证',
-              attachments: controller.drivingAttachments,
+  /// 3. 构建车辆证件卡片 (重构为 TabView 样式)
+  Widget _buildCertificatesCard(BuildContext context) {
+    return DefaultTabController(
+      length: 4,
+      child: Column(
+        children: [
+          TabBar(
+            isScrollable: false,
+            indicatorColor: Color.fromRGBO(16, 185, 129, 1),
+            labelColor: Color.fromRGBO(16, 185, 129, 1),
+            unselectedLabelColor: Colors.grey,
+            labelStyle: const TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
+            indicatorSize: TabBarIndicatorSize.label,
+            tabs: const [
+              Tab(text: '行驶证'),
+              Tab(text: '营运证'),
+              Tab(text: '加氢资格证'),
+              Tab(text: '登记证'),
+            ],
+          ),
+          const SizedBox(height: 9),
+          SizedBox(
+            height: 343.h, // 给定一个高度，或者使用别的方式布局
+            child: TabBarView(
+              children: [
+                _buildCertificateContent('行驶证', controller.drivingAttachments),
+                _buildCertificateContent('营运证', controller.operationAttachments),
+                _buildCertificateContent('加氢资格证', controller.hydrogenationAttachments),
+                _buildCertificateContent('登记证', controller.registerAttachments),
+              ],
             ),
-            const Divider(),
-            _buildCertificateRow(
-              icon: Icons.article_rounded,
-              title: '运营证',
-              attachments: controller.operationAttachments,
-            ),
-            const Divider(),
-            _buildCertificateRow(
-              icon: Icons.propane_tank_rounded,
-              title: '加氢证',
-              attachments: controller.hydrogenationAttachments,
-            ),
-            const Divider(),
-            _buildCertificateRow(
-              icon: Icons.app_registration_rounded,
-              title: '登记证',
-              attachments: controller.registerAttachments,
-            ),
-          ],
-        ),
+          ),
+        ],
       ),
     );
   }
 
-  /// 证件展示
-  Widget _buildCertificateRow({
-    required IconData icon,
-    required String title,
-    required List<String> attachments,
+  /// 构建单个证件的展示内容
+  Widget _buildCertificateContent(String title, RxList<String> attachments) {
+    return Obx(() {
+      if (attachments.isEmpty) {
+        return const Center(child: Text('暂无相关证件信息'));
+      }
+      return Card(
+        elevation: 0,
+        color: Colors.white,
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
+        child: Padding(
+          padding: const EdgeInsets.all(16.0),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.center,
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  _buildCertDetailItem('所有人', '上海羚牛氢运物联网科技有限公司', isFull: true),
+                  _buildCertDetailItem('车辆识别代号', controller.vin),
+                ],
+              ),
+              const SizedBox(height: 16),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  _buildCertDetailItem(
+                    '有效期至',
+                    '2028-08-14',
+                    valueColor: const Color(0xFF52C41A),
+                  ),
+                  _buildCertDetailItem('使用性质', '货运'),
+                ],
+              ),
+              const SizedBox(height: 20),
+              // 附件预览部分
+              Expanded(
+                child: ListView.builder(
+                  scrollDirection: Axis.vertical,
+                  itemCount: attachments.length,
+                  physics: const NeverScrollableScrollPhysics(),
+                  itemBuilder: (context, index) {
+                    final url = attachments[index];
+                    return GestureDetector(
+                      onTap: () {
+                        controller.openAttachment(url);
+                      },
+                      child: Container(
+                        height: 184.h,
+                        decoration: BoxDecoration(
+                          borderRadius: BorderRadius.circular(16),
+                          border: Border.all(color: Color.fromRGBO(226, 232, 240, 1)),
+                          color: Color.fromRGBO(248, 250, 252, 1)
+                        ),
+                        child: Center(child: _buildAttachmentPreview(url)),
+                      ),
+                    );
+                  },
+                ),
+              ),
+            ],
+          ),
+        ),
+      );
+    });
+  }
+
+  Widget _buildCertDetailItem(
+    String label,
+    String value, {
+    Color? valueColor,
+    bool isFull = false,
   }) {
-    return ListTile(
-      contentPadding: EdgeInsets.zero,
-      leading: CircleAvatar(
-        radius: 24,
-        backgroundColor: Colors.blue.withOpacity(0.1),
-        child: Icon(icon, color: Colors.blue, size: 28),
+    return Container(
+      width: isFull ? null : 140,
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(label, style: const TextStyle(fontSize: 12, color: Colors.grey)),
+          const SizedBox(height: 4),
+          Text(
+            value,
+            style: TextStyle(
+              fontSize: 13,
+              fontWeight: FontWeight.bold,
+              color: valueColor ?? Colors.black87,
+            ),
+            maxLines: 2,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
       ),
-      title: Text(
-        title,
-        style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
-      ),
-      subtitle: Obx(
-        () => Text(
-          '共 ${attachments.length} 个附件',
-          style: const TextStyle(color: Colors.grey, fontSize: 12),
-        ),
-      ),
-      trailing: Container(
-        padding: const EdgeInsets.all(8),
-        decoration: BoxDecoration(
-          color: Colors.grey[200],
-          borderRadius: BorderRadius.circular(8),
-        ),
-        child: const Icon(Icons.find_in_page_outlined, color: AppTheme.themeColor),
-      ),
-      onTap: () => controller.navigateToCertificateViewer(title, attachments),
+    );
+  }
+
+  /// 附件预览组件 (智能判断 PDF 或图片)
+  Widget _buildAttachmentPreview(String url) {
+    return AspectRatio(
+      aspectRatio: 4 / 3,
+      child: controller.isPdf(url)
+          ? Obx(() {
+              final bool loading = controller.isLoading[url] ?? true;
+              final String? localPath = controller.localPdfPaths[url];
+
+              if (loading) {
+                return _buildLoadingIndicator();
+              } else if (localPath != null && localPath.isNotEmpty) {
+                return IgnorePointer(
+                  ignoring: true, // 设置为 true 来忽略所有指针事件
+                  child: PDFView(
+                    backgroundColor: Color.fromRGBO(248, 250, 252, 1),
+                    fitEachPage: true,
+                    filePath: localPath,
+                    fitPolicy: FitPolicy.WIDTH,
+                    // 适配宽度
+                    enableSwipe: false,
+                    swipeHorizontal: false,
+                    autoSpacing: false,
+                    pageFling: false,
+                    preventLinkNavigation: true, // 顺便禁用PDF内部链接的跳转
+                  ),
+                );
+              } else {
+                // PDF加载失败
+                return _buildErrorIndicator();
+              }
+            })
+          : Image.network(
+              url,
+              fit: BoxFit.contain,
+              // 图片加载时显示loading
+              loadingBuilder: (context, child, loadingProgress) {
+                if (loadingProgress == null) return child;
+                return _buildLoadingIndicator();
+              },
+              // 图片加载失败时显示错误
+              errorBuilder: (context, error, stackTrace) {
+                return _buildErrorIndicator();
+              },
+            ),
+    );
+  }
+
+  Widget _buildLoadingIndicator() {
+    return const SizedBox(height: 200, child: Center(child: CircularProgressIndicator()));
+  }
+
+  Widget _buildErrorIndicator() {
+    return const SizedBox(
+      height: 200,
+      child: Center(child: Icon(Icons.error_outline, color: Colors.red, size: 48)),
     );
   }
 
@@ -424,7 +542,11 @@ class CarInfoPage extends GetView<CarInfoController> {
           const SizedBox(height: 12),
           const Text(
             "请确保车辆证件齐全有效，定期检查车辆状态和证件有效期，以确保运输作业合规安全。",
-            style: TextStyle(fontSize: 13, color: Color.fromRGBO(1, 113, 55, 0.8), height: 1.5),
+            style: TextStyle(
+              fontSize: 13,
+              color: Color.fromRGBO(1, 113, 55, 0.8),
+              height: 1.5,
+            ),
           ),
           const SizedBox(height: 8),
           const Text(