diff --git a/backend/services/planting-service/src/api/controllers/contract-signing.controller.ts b/backend/services/planting-service/src/api/controllers/contract-signing.controller.ts
index 8956df61..8b9cd0d1 100644
--- a/backend/services/planting-service/src/api/controllers/contract-signing.controller.ts
+++ b/backend/services/planting-service/src/api/controllers/contract-signing.controller.ts
@@ -20,6 +20,33 @@ import { PdfGeneratorService } from '../../infrastructure/pdf/pdf-generator.serv
 import { MinioStorageService } from '../../infrastructure/storage/minio-storage.service';
 import * as crypto from 'crypto';
 
+/**
+ * 签名轨迹点
+ */
+interface SignatureTracePoint {
+  x: number;
+  y: number;
+  t: number; // 毫秒时间戳
+}
+
+/**
+ * 签名笔画
+ */
+interface SignatureTraceStroke {
+  points: SignatureTracePoint[];
+  startTime: number;
+  endTime: number;
+}
+
+/**
+ * 签名轨迹数据（用于法律凭证）
+ */
+interface SignatureTraceData {
+  strokes: SignatureTraceStroke[];
+  totalDuration: number; // 总签名时长（毫秒）
+  strokeCount: number;   // 笔画数量
+}
+
 /**
  * 签署合同请求DTO
  */
@@ -36,6 +63,7 @@ interface SignContractDto {
     latitude?: number;
     longitude?: number;
   };
+  signatureTrace?: SignatureTraceData; // 签名轨迹数据（可选）
 }
 
 /**
@@ -274,7 +302,12 @@ export class ContractSigningController {
         signedPdfUrl = '';
       }
 
-      // 8. 完成签署
+      // 8. 记录签名轨迹数据（如果有）
+      if (dto.signatureTrace) {
+        this.logger.log(`Signature trace: ${dto.signatureTrace.strokeCount} strokes, ${dto.signatureTrace.totalDuration}ms`);
+      }
+
+      // 9. 完成签署
       await this.contractSigningService.signContract(orderNo, userId, {
         signatureCloudUrl,
         signatureHash,
@@ -283,6 +316,7 @@ export class ContractSigningController {
         deviceInfo: dto.deviceInfo,
         userAgent,
         location: dto.location,
+        signatureTrace: dto.signatureTrace ? JSON.stringify(dto.signatureTrace) : undefined,
       });
 
       return {
@@ -361,7 +395,12 @@ export class ContractSigningController {
         signedPdfUrl = '';
       }
 
-      // 8. 完成补签
+      // 8. 记录签名轨迹数据（如果有）
+      if (dto.signatureTrace) {
+        this.logger.log(`Signature trace: ${dto.signatureTrace.strokeCount} strokes, ${dto.signatureTrace.totalDuration}ms`);
+      }
+
+      // 9. 完成补签
       await this.contractSigningService.lateSignContract(orderNo, userId, {
         signatureCloudUrl,
         signatureHash,
@@ -370,6 +409,7 @@ export class ContractSigningController {
         deviceInfo: dto.deviceInfo,
         userAgent,
         location: dto.location,
+        signatureTrace: dto.signatureTrace ? JSON.stringify(dto.signatureTrace) : undefined,
       });
 
       return {
diff --git a/backend/services/planting-service/src/domain/aggregates/contract-signing-task.aggregate.ts b/backend/services/planting-service/src/domain/aggregates/contract-signing-task.aggregate.ts
index bf229049..63785ebf 100644
--- a/backend/services/planting-service/src/domain/aggregates/contract-signing-task.aggregate.ts
+++ b/backend/services/planting-service/src/domain/aggregates/contract-signing-task.aggregate.ts
@@ -58,6 +58,7 @@ export interface SignContractParams {
   deviceInfo: DeviceInfo;
   userAgent: string;
   location?: SigningLocation;
+  signatureTrace?: string; // JSON 格式的签名轨迹数据（时间戳、笔画顺序）
 }
 
 export class ContractSigningTask {
diff --git a/frontend/mobile-app/lib/core/services/contract_signing_service.dart b/frontend/mobile-app/lib/core/services/contract_signing_service.dart
index d3bfaad5..bcc1f059 100644
--- a/frontend/mobile-app/lib/core/services/contract_signing_service.dart
+++ b/frontend/mobile-app/lib/core/services/contract_signing_service.dart
@@ -404,12 +404,16 @@ class ContractSigningService {
     String? userAgent,
     double? latitude,
     double? longitude,
+    Map<String, dynamic>? signatureTrace, // 签名轨迹数据
   }) async {
     try {
       debugPrint('[ContractSigningService] 签署合同: $orderNo');
       debugPrint('[ContractSigningService] 签名图片大小: ${signatureImage.length} bytes');
       debugPrint('[ContractSigningService] IP: $ipAddress, 设备: $deviceInfo');
       debugPrint('[ContractSigningService] 位置: lat=$latitude, lng=$longitude');
+      if (signatureTrace != null) {
+        debugPrint('[ContractSigningService] 签名轨迹: ${signatureTrace['strokeCount']} 笔画, ${signatureTrace['totalDuration']}ms');
+      }
 
       // 将签名图片转为 base64
       final signatureBase64 = base64Encode(signatureImage);
@@ -425,6 +429,7 @@ class ContractSigningService {
         'location': latitude != null && longitude != null
             ? {'latitude': latitude, 'longitude': longitude}
             : null,
+        'signatureTrace': signatureTrace, // 签名轨迹数据
       };
       debugPrint('[ContractSigningService] 请求 URL: /planting/contract-signing/tasks/$orderNo/sign');
 
@@ -470,12 +475,16 @@ class ContractSigningService {
     String? userAgent,
     double? latitude,
     double? longitude,
+    Map<String, dynamic>? signatureTrace, // 签名轨迹数据
   }) async {
     try {
       debugPrint('[ContractSigningService] 补签合同: $orderNo');
       debugPrint('[ContractSigningService] 签名图片大小: ${signatureImage.length} bytes');
       debugPrint('[ContractSigningService] IP: $ipAddress, 设备: $deviceInfo');
       debugPrint('[ContractSigningService] 位置: lat=$latitude, lng=$longitude');
+      if (signatureTrace != null) {
+        debugPrint('[ContractSigningService] 签名轨迹: ${signatureTrace['strokeCount']} 笔画, ${signatureTrace['totalDuration']}ms');
+      }
 
       final signatureBase64 = base64Encode(signatureImage);
       debugPrint('[ContractSigningService] Base64 长度: ${signatureBase64.length}');
@@ -490,6 +499,7 @@ class ContractSigningService {
         'location': latitude != null && longitude != null
             ? {'latitude': latitude, 'longitude': longitude}
             : null,
+        'signatureTrace': signatureTrace, // 签名轨迹数据
       };
       debugPrint('[ContractSigningService] 请求 URL: /planting/contract-signing/tasks/$orderNo/late-sign');
 
diff --git a/frontend/mobile-app/lib/features/contract_signing/presentation/pages/contract_signing_page.dart b/frontend/mobile-app/lib/features/contract_signing/presentation/pages/contract_signing_page.dart
index 6e4d8b89..b4aa3b17 100644
--- a/frontend/mobile-app/lib/features/contract_signing/presentation/pages/contract_signing_page.dart
+++ b/frontend/mobile-app/lib/features/contract_signing/presentation/pages/contract_signing_page.dart
@@ -274,9 +274,12 @@ class _ContractSigningPageState extends ConsumerState<ContractSigningPage> {
   }
 
   /// 提交签名
-  Future<void> _submitSignature(Uint8List signatureImage) async {
+  Future<void> _submitSignature(Uint8List signatureImage, SignatureTraceData traceData) async {
     if (_isSubmitting || _task == null) return;
 
+    // 记录轨迹数据到日志（用于调试）
+    debugPrint('[ContractSigningPage] 签名轨迹数据: ${traceData.strokeCount} 笔画, 总时长 ${traceData.totalDuration}ms');
+
     setState(() {
       _showSignaturePad = false;
       _isSubmitting = true;
@@ -318,6 +321,9 @@ class _ContractSigningPageState extends ConsumerState<ContractSigningPage> {
 
       final service = ref.read(contractSigningServiceProvider);
 
+      // 转换轨迹数据为 Map
+      final traceDataMap = traceData.toJson();
+
       // 判断是正常签署还是补签
       if (_task!.status == ContractSigningStatus.unsignedTimeout) {
         await service.lateSignContract(
@@ -328,6 +334,7 @@ class _ContractSigningPageState extends ConsumerState<ContractSigningPage> {
           userAgent: userAgent,
           latitude: latitude,
           longitude: longitude,
+          signatureTrace: traceDataMap,
         );
       } else {
         await service.signContract(
@@ -338,6 +345,7 @@ class _ContractSigningPageState extends ConsumerState<ContractSigningPage> {
           userAgent: userAgent,
           latitude: latitude,
           longitude: longitude,
+          signatureTrace: traceDataMap,
         );
       }
 
@@ -934,16 +942,11 @@ class _ContractSigningPageState extends ConsumerState<ContractSigningPage> {
 
   /// 构建签名面板
   Widget _buildSignaturePad() {
-    return Column(
-      children: [
-        _buildHeader(),
-        Expanded(
-          child: SignaturePad(
-            onSubmit: _submitSignature,
-            onCancel: () => setState(() => _showSignaturePad = false),
-          ),
-        ),
-      ],
+    // 横屏签名面板，不显示顶部 header
+    return SignaturePad(
+      onSubmit: _submitSignature,
+      onCancel: () => setState(() => _showSignaturePad = false),
+      userName: _task?.userRealName,
     );
   }
 }
diff --git a/frontend/mobile-app/lib/features/contract_signing/presentation/widgets/signature_pad.dart b/frontend/mobile-app/lib/features/contract_signing/presentation/widgets/signature_pad.dart
index 178f4869..a033c17a 100644
--- a/frontend/mobile-app/lib/features/contract_signing/presentation/widgets/signature_pad.dart
+++ b/frontend/mobile-app/lib/features/contract_signing/presentation/widgets/signature_pad.dart
@@ -1,16 +1,76 @@
 import 'dart:typed_data';
 import 'dart:ui' as ui;
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+/// 签名轨迹点数据
+class SignaturePoint {
+  final double x;
+  final double y;
+  final int timestamp; // 毫秒时间戳
+
+  SignaturePoint({
+    required this.x,
+    required this.y,
+    required this.timestamp,
+  });
+
+  Map<String, dynamic> toJson() => {
+        'x': x,
+        'y': y,
+        't': timestamp,
+      };
+}
+
+/// 签名笔画数据
+class SignatureStroke {
+  final List<SignaturePoint> points;
+  final int startTime;
+  final int endTime;
+
+  SignatureStroke({
+    required this.points,
+    required this.startTime,
+    required this.endTime,
+  });
+
+  Map<String, dynamic> toJson() => {
+        'points': points.map((p) => p.toJson()).toList(),
+        'startTime': startTime,
+        'endTime': endTime,
+      };
+}
+
+/// 签名轨迹数据（用于法律凭证）
+class SignatureTraceData {
+  final List<SignatureStroke> strokes;
+  final int totalDuration; // 总签名时长（毫秒）
+  final int strokeCount; // 笔画数量
+
+  SignatureTraceData({
+    required this.strokes,
+    required this.totalDuration,
+    required this.strokeCount,
+  });
+
+  Map<String, dynamic> toJson() => {
+        'strokes': strokes.map((s) => s.toJson()).toList(),
+        'totalDuration': totalDuration,
+        'strokeCount': strokeCount,
+      };
+}
 
 /// 签名面板组件
 class SignaturePad extends StatefulWidget {
-  final Function(Uint8List) onSubmit;
+  final Function(Uint8List, SignatureTraceData) onSubmit;
   final VoidCallback onCancel;
+  final String? userName; // 用户姓名，用于显示参照
 
   const SignaturePad({
     super.key,
     required this.onSubmit,
     required this.onCancel,
+    this.userName,
   });
 
   @override
@@ -18,20 +78,56 @@ class SignaturePad extends StatefulWidget {
 }
 
 class _SignaturePadState extends State<SignaturePad> {
-  /// 签名路径列表
+  /// 签名路径列表（用于绘制）
   final List<List<Offset>> _strokes = [];
 
   /// 当前笔画
   List<Offset> _currentStroke = [];
 
+  /// 签名轨迹数据（带时间戳）
+  final List<SignatureStroke> _traceStrokes = [];
+
+  /// 当前笔画的轨迹点
+  List<SignaturePoint> _currentTracePoints = [];
+
+  /// 当前笔画开始时间
+  int? _currentStrokeStartTime;
+
+  /// 签名开始时间
+  int? _signatureStartTime;
+
   /// 是否有签名
   bool get _hasSignature => _strokes.isNotEmpty || _currentStroke.isNotEmpty;
 
+  @override
+  void initState() {
+    super.initState();
+    // 强制横屏显示
+    SystemChrome.setPreferredOrientations([
+      DeviceOrientation.landscapeLeft,
+      DeviceOrientation.landscapeRight,
+    ]);
+  }
+
+  @override
+  void dispose() {
+    // 恢复竖屏
+    SystemChrome.setPreferredOrientations([
+      DeviceOrientation.portraitUp,
+      DeviceOrientation.portraitDown,
+    ]);
+    super.dispose();
+  }
+
   /// 清除签名
   void _clear() {
     setState(() {
       _strokes.clear();
       _currentStroke.clear();
+      _traceStrokes.clear();
+      _currentTracePoints.clear();
+      _currentStrokeStartTime = null;
+      _signatureStartTime = null;
     });
   }
 
@@ -50,7 +146,15 @@ class _SignaturePadState extends State<SignaturePad> {
     // 将签名转换为图片
     final image = await _renderSignatureImage();
     if (image != null) {
-      widget.onSubmit(image);
+      // 构建轨迹数据
+      final now = DateTime.now().millisecondsSinceEpoch;
+      final totalDuration = _signatureStartTime != null ? now - _signatureStartTime! : 0;
+      final traceData = SignatureTraceData(
+        strokes: _traceStrokes,
+        totalDuration: totalDuration,
+        strokeCount: _traceStrokes.length,
+      );
+      widget.onSubmit(image, traceData);
     }
   }
 
@@ -108,168 +212,282 @@ class _SignaturePadState extends State<SignaturePad> {
     }
   }
 
+  /// 处理笔画开始
+  void _onPanStart(DragStartDetails details) {
+    final now = DateTime.now().millisecondsSinceEpoch;
+
+    // 记录签名开始时间
+    _signatureStartTime ??= now;
+
+    // 记录笔画开始时间
+    _currentStrokeStartTime = now;
+
+    setState(() {
+      _currentStroke = [details.localPosition];
+      _currentTracePoints = [
+        SignaturePoint(
+          x: details.localPosition.dx,
+          y: details.localPosition.dy,
+          timestamp: now,
+        ),
+      ];
+    });
+  }
+
+  /// 处理笔画更新
+  void _onPanUpdate(DragUpdateDetails details) {
+    final now = DateTime.now().millisecondsSinceEpoch;
+
+    setState(() {
+      _currentStroke.add(details.localPosition);
+      _currentTracePoints.add(
+        SignaturePoint(
+          x: details.localPosition.dx,
+          y: details.localPosition.dy,
+          timestamp: now,
+        ),
+      );
+    });
+  }
+
+  /// 处理笔画结束
+  void _onPanEnd(DragEndDetails details) {
+    final now = DateTime.now().millisecondsSinceEpoch;
+
+    setState(() {
+      if (_currentStroke.isNotEmpty) {
+        _strokes.add(List.from(_currentStroke));
+        _currentStroke.clear();
+
+        // 保存轨迹数据
+        if (_currentTracePoints.isNotEmpty && _currentStrokeStartTime != null) {
+          _traceStrokes.add(
+            SignatureStroke(
+              points: List.from(_currentTracePoints),
+              startTime: _currentStrokeStartTime!,
+              endTime: now,
+            ),
+          );
+        }
+        _currentTracePoints.clear();
+        _currentStrokeStartTime = null;
+      }
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Container(
       color: const Color(0xFFFFF7E6),
-      child: Column(
+      child: Row(
         children: [
-          // 标题
+          // 左侧操作区
           Container(
-            padding: const EdgeInsets.all(16),
-            child: const Text(
-              '请在下方区域签名',
-              style: TextStyle(
-                fontSize: 18,
-                fontWeight: FontWeight.bold,
-                color: Color(0xFF5D4037),
-              ),
-            ),
-          ),
-          // 签名区域
-          Expanded(
-            child: Container(
-              margin: const EdgeInsets.symmetric(horizontal: 16),
-              decoration: BoxDecoration(
-                color: Colors.white,
-                borderRadius: BorderRadius.circular(12),
-                border: Border.all(
-                  color: const Color(0xFFD4AF37),
-                  width: 2,
-                ),
-                boxShadow: [
-                  BoxShadow(
-                    color: Colors.black.withValues(alpha: 0.1),
-                    blurRadius: 10,
-                    offset: const Offset(0, 4),
-                  ),
-                ],
-              ),
-              child: ClipRRect(
-                borderRadius: BorderRadius.circular(10),
-                child: GestureDetector(
-                  onPanStart: (details) {
-                    setState(() {
-                      _currentStroke = [details.localPosition];
-                    });
-                  },
-                  onPanUpdate: (details) {
-                    setState(() {
-                      _currentStroke.add(details.localPosition);
-                    });
-                  },
-                  onPanEnd: (details) {
-                    setState(() {
-                      if (_currentStroke.isNotEmpty) {
-                        _strokes.add(List.from(_currentStroke));
-                        _currentStroke.clear();
-                      }
-                    });
-                  },
-                  child: CustomPaint(
-                    painter: _SignaturePainter(
-                      strokes: _strokes,
-                      currentStroke: _currentStroke,
-                    ),
-                    child: Container(),
-                  ),
-                ),
-              ),
-            ),
-          ),
-          // 提示文字
-          Padding(
-            padding: const EdgeInsets.all(16),
-            child: Text(
-              _hasSignature ? '已签名，点击确认提交' : '在白色区域内签名',
-              style: TextStyle(
-                fontSize: 14,
-                color: _hasSignature ? const Color(0xFF4CAF50) : const Color(0xFF999999),
-              ),
-            ),
-          ),
-          // 操作按钮
-          Container(
-            padding: const EdgeInsets.fromLTRB(16, 8, 16, 24),
-            child: Row(
+            width: 100,
+            padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 8),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
               children: [
                 // 取消按钮
-                Expanded(
-                  child: GestureDetector(
-                    onTap: widget.onCancel,
-                    child: Container(
-                      height: 56,
-                      decoration: BoxDecoration(
-                        color: Colors.white,
-                        borderRadius: BorderRadius.circular(12),
-                        border: Border.all(
-                          color: const Color(0xFFD4AF37),
-                          width: 1,
-                        ),
+                GestureDetector(
+                  onTap: widget.onCancel,
+                  child: Container(
+                    width: 80,
+                    height: 48,
+                    decoration: BoxDecoration(
+                      color: Colors.white,
+                      borderRadius: BorderRadius.circular(8),
+                      border: Border.all(
+                        color: const Color(0xFFD4AF37),
+                        width: 1,
                       ),
-                      child: const Center(
-                        child: Text(
-                          '取消',
-                          style: TextStyle(
-                            fontSize: 16,
-                            fontWeight: FontWeight.w600,
-                            color: Color(0xFFD4AF37),
-                          ),
+                    ),
+                    child: const Center(
+                      child: Text(
+                        '取消',
+                        style: TextStyle(
+                          fontSize: 14,
+                          fontWeight: FontWeight.w600,
+                          color: Color(0xFFD4AF37),
                         ),
                       ),
                     ),
                   ),
                 ),
-                const SizedBox(width: 12),
                 // 清除按钮
                 GestureDetector(
                   onTap: _clear,
                   child: Container(
-                    width: 56,
-                    height: 56,
+                    width: 80,
+                    height: 48,
                     decoration: BoxDecoration(
                       color: const Color(0xFFFFEBEE),
-                      borderRadius: BorderRadius.circular(12),
+                      borderRadius: BorderRadius.circular(8),
                     ),
-                    child: const Icon(
-                      Icons.refresh,
-                      color: Color(0xFFE53935),
-                      size: 24,
+                    child: const Row(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Icon(
+                          Icons.refresh,
+                          color: Color(0xFFE53935),
+                          size: 18,
+                        ),
+                        SizedBox(width: 4),
+                        Text(
+                          '清除',
+                          style: TextStyle(
+                            fontSize: 14,
+                            color: Color(0xFFE53935),
+                          ),
+                        ),
+                      ],
                     ),
                   ),
                 ),
-                const SizedBox(width: 12),
-                // 确认按钮
-                Expanded(
-                  child: GestureDetector(
-                    onTap: _submit,
-                    child: Container(
-                      height: 56,
-                      decoration: BoxDecoration(
-                        color: _hasSignature
-                            ? const Color(0xFFD4AF37)
-                            : const Color(0xFFD4AF37).withValues(alpha: 0.5),
-                        borderRadius: BorderRadius.circular(12),
-                        boxShadow: _hasSignature
-                            ? [
-                                BoxShadow(
-                                  color: const Color(0xFFD4AF37).withValues(alpha: 0.3),
-                                  blurRadius: 15,
-                                  offset: const Offset(0, 8),
-                                ),
-                              ]
-                            : null,
+              ],
+            ),
+          ),
+          // 中间签名区域
+          Expanded(
+            child: Column(
+              children: [
+                // 顶部提示和姓名显示
+                Container(
+                  padding: const EdgeInsets.symmetric(vertical: 8),
+                  child: Column(
+                    children: [
+                      // 主提示文字
+                      const Text(
+                        '请使用正楷书写您的真实姓名',
+                        style: TextStyle(
+                          fontSize: 16,
+                          fontWeight: FontWeight.bold,
+                          color: Color(0xFFE53935),
+                        ),
                       ),
-                      child: const Center(
-                        child: Text(
-                          '确认签名',
+                      const SizedBox(height: 4),
+                      // 显示用户姓名供参照
+                      if (widget.userName != null && widget.userName!.isNotEmpty)
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: [
+                            const Text(
+                              '请签署：',
+                              style: TextStyle(
+                                fontSize: 14,
+                                color: Color(0xFF666666),
+                              ),
+                            ),
+                            Text(
+                              widget.userName!,
+                              style: const TextStyle(
+                                fontSize: 18,
+                                fontWeight: FontWeight.bold,
+                                color: Color(0xFF5D4037),
+                              ),
+                            ),
+                          ],
+                        ),
+                    ],
+                  ),
+                ),
+                // 签名区域
+                Expanded(
+                  child: Container(
+                    margin: const EdgeInsets.fromLTRB(0, 0, 0, 8),
+                    decoration: BoxDecoration(
+                      color: Colors.white,
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(
+                        color: const Color(0xFFD4AF37),
+                        width: 2,
+                      ),
+                      boxShadow: [
+                        BoxShadow(
+                          color: Colors.black.withValues(alpha: 0.1),
+                          blurRadius: 10,
+                          offset: const Offset(0, 4),
+                        ),
+                      ],
+                    ),
+                    child: ClipRRect(
+                      borderRadius: BorderRadius.circular(10),
+                      child: GestureDetector(
+                        onPanStart: _onPanStart,
+                        onPanUpdate: _onPanUpdate,
+                        onPanEnd: _onPanEnd,
+                        child: CustomPaint(
+                          painter: _SignaturePainter(
+                            strokes: _strokes,
+                            currentStroke: _currentStroke,
+                          ),
+                          child: Container(),
+                        ),
+                      ),
+                    ),
+                  ),
+                ),
+                // 底部状态提示
+                Container(
+                  padding: const EdgeInsets.only(bottom: 8),
+                  child: Text(
+                    _hasSignature ? '已签名，点击右侧确认提交' : '在白色区域内签名',
+                    style: TextStyle(
+                      fontSize: 12,
+                      color: _hasSignature
+                          ? const Color(0xFF4CAF50)
+                          : const Color(0xFF999999),
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ),
+          // 右侧确认按钮
+          Container(
+            width: 100,
+            padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 8),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                GestureDetector(
+                  onTap: _submit,
+                  child: Container(
+                    width: 80,
+                    height: 80,
+                    decoration: BoxDecoration(
+                      color: _hasSignature
+                          ? const Color(0xFFD4AF37)
+                          : const Color(0xFFD4AF37).withValues(alpha: 0.5),
+                      borderRadius: BorderRadius.circular(40),
+                      boxShadow: _hasSignature
+                          ? [
+                              BoxShadow(
+                                color:
+                                    const Color(0xFFD4AF37).withValues(alpha: 0.3),
+                                blurRadius: 15,
+                                offset: const Offset(0, 8),
+                              ),
+                            ]
+                          : null,
+                    ),
+                    child: const Column(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Icon(
+                          Icons.check,
+                          color: Colors.white,
+                          size: 32,
+                        ),
+                        Text(
+                          '确认',
                           style: TextStyle(
-                            fontSize: 16,
+                            fontSize: 14,
                             fontWeight: FontWeight.w600,
                             color: Colors.white,
                           ),
                         ),
-                      ),
+                      ],
                     ),
                   ),
                 ),