diff --git a/app/Models/BaseModel.php b/app/Models/BaseModel.php
new file mode 100644
index 0000000..60bbb97
--- /dev/null
+++ b/app/Models/BaseModel.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class BaseModel extends Model
+{
+
+    protected function serializeDate(\DateTimeInterface $date)
+    {
+        return $date->setTimezone('Asia/Shanghai')->format('Y-m-d H:i:s');
+    }
+
+}
diff --git a/app/Models/BillModel.php b/app/Models/BillModel.php
index 1275372..c7c0a30 100644
--- a/app/Models/BillModel.php
+++ b/app/Models/BillModel.php
@@ -3,7 +3,6 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Modules\SystemUser\Models\SysUserModel;
@@ -11,7 +10,7 @@ use Modules\SystemUser\Models\SysUserModel;
 /**
  * 门店账单模型（采购单完成后按门店生成；商品金额由订单汇总快照，生成后不可修改）
  */
-class BillModel extends Model
+class BillModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/CartModel.php b/app/Models/CartModel.php
index 417ff0d..d98c05a 100644
--- a/app/Models/CartModel.php
+++ b/app/Models/CartModel.php
@@ -3,13 +3,12 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 /**
  * 小程序购物车模型（门店订货车：按门店归属，同商品唯一行、加购合并数量）
  */
-class CartModel extends Model
+class CartModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/ContainerReturnModel.php b/app/Models/ContainerReturnModel.php
index d0f3e79..ea484ce 100644
--- a/app/Models/ContainerReturnModel.php
+++ b/app/Models/ContainerReturnModel.php
@@ -3,7 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Modules\SystemUser\Models\SysUserModel;
 
@@ -12,7 +12,7 @@ use Modules\SystemUser\Models\SysUserModel;
  *
  * 数量正数=压筐（附加金额），负数=回筐（抵扣金额）；数量为 0 不写记录
  */
-class ContainerReturnModel extends Model
+class ContainerReturnModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/CustomerLevelModel.php b/app/Models/CustomerLevelModel.php
index 1adc553..5bd3e9e 100644
--- a/app/Models/CustomerLevelModel.php
+++ b/app/Models/CustomerLevelModel.php
@@ -3,7 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\HasOne;
 use Modules\SystemTool\Models\SysFileModel;
@@ -11,7 +11,7 @@ use Modules\SystemTool\Models\SysFileModel;
 /**
  * 客户等级模型（同一商品按等级上浮比例定价：售价 = 成本价 × (100 + percent) / 100）
  */
-class CustomerLevelModel extends Model
+class CustomerLevelModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/HomeBannerModel.php b/app/Models/HomeBannerModel.php
index 45af9f4..4891aab 100644
--- a/app/Models/HomeBannerModel.php
+++ b/app/Models/HomeBannerModel.php
@@ -2,14 +2,14 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\HasOne;
 use Modules\SystemTool\Models\SysFileModel;
 
 /**
  * 小程序首页轮播图
  */
-class HomeBannerModel extends Model
+class HomeBannerModel extends BaseModel
 {
     /** 状态：停用 */
     public const int STATUS_DISABLED = 0;
diff --git a/app/Models/HomeNavModel.php b/app/Models/HomeNavModel.php
index d86b9b3..067f676 100644
--- a/app/Models/HomeNavModel.php
+++ b/app/Models/HomeNavModel.php
@@ -2,14 +2,14 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\HasOne;
 use Modules\SystemTool\Models\SysFileModel;
 
 /**
  * 小程序首页宫格导航
  */
-class HomeNavModel extends Model
+class HomeNavModel extends BaseModel
 {
     /** 状态：停用 */
     public const int STATUS_DISABLED = 0;
diff --git a/app/Models/HomePromoModel.php b/app/Models/HomePromoModel.php
index d910c33..9184083 100644
--- a/app/Models/HomePromoModel.php
+++ b/app/Models/HomePromoModel.php
@@ -2,14 +2,14 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\HasOne;
 use Modules\SystemTool\Models\SysFileModel;
 
 /**
  * 小程序首页促销推荐卡片
  */
-class HomePromoModel extends Model
+class HomePromoModel extends BaseModel
 {
     /** 状态：停用 */
     public const int STATUS_DISABLED = 0;
diff --git a/app/Models/HomeSpecialModel.php b/app/Models/HomeSpecialModel.php
index c52f1b5..0a8cf9e 100644
--- a/app/Models/HomeSpecialModel.php
+++ b/app/Models/HomeSpecialModel.php
@@ -2,13 +2,13 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 /**
  * 小程序首页特价推荐商品
  */
-class HomeSpecialModel extends Model
+class HomeSpecialModel extends BaseModel
 {
     /** 状态：停用 */
     public const int STATUS_DISABLED = 0;
diff --git a/app/Models/NoticeModel.php b/app/Models/NoticeModel.php
index 60a4c79..8d18c0b 100644
--- a/app/Models/NoticeModel.php
+++ b/app/Models/NoticeModel.php
@@ -2,13 +2,13 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 /**
  * 通知模型（小程序端消息：订单 / 价格变更 / 系统；store_id=0 为全员广播）
  */
-class NoticeModel extends Model
+class NoticeModel extends BaseModel
 {
     /** 通知类型：订单 */
     public const TYPE_ORDER = 'order';
diff --git a/app/Models/PaymentModel.php b/app/Models/PaymentModel.php
index 5c8d172..cd3fccd 100644
--- a/app/Models/PaymentModel.php
+++ b/app/Models/PaymentModel.php
@@ -4,7 +4,7 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Modules\SystemTool\Models\SysFileModel;
@@ -17,7 +17,7 @@ use Modules\SystemUser\Models\SysUserModel;
  * - 1 线下凭证支付：门店提交汇款凭证，后台审核通过后关联账单批量置已支付
  * - 2 旺铺在线支付：调起微信/支付宝在线支付，网关回调（或主动查询）确认后自动结账
  */
-class PaymentModel extends Model
+class PaymentModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/ProductCategoryModel.php b/app/Models/ProductCategoryModel.php
index 5555c02..704397e 100644
--- a/app/Models/ProductCategoryModel.php
+++ b/app/Models/ProductCategoryModel.php
@@ -2,14 +2,14 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 
 /**
  * 商品分类模型（蔬菜/水果/其他，多级分类自关联）
  */
-class ProductCategoryModel extends Model
+class ProductCategoryModel extends BaseModel
 {
     /** 状态：停用 */
     public const int STATUS_DISABLED = 0;
diff --git a/app/Models/ProductModel.php b/app/Models/ProductModel.php
index 16211da..a656a20 100644
--- a/app/Models/ProductModel.php
+++ b/app/Models/ProductModel.php
@@ -4,7 +4,7 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\SoftDeletes;
 use Modules\SystemTool\Models\SysFileModel;
@@ -12,7 +12,7 @@ use Modules\SystemTool\Models\SysFileModel;
 /**
  * 商品档案模型（品名/规格包规/供应商/成本价；售价按客户等级上浮比例换算）
  */
-class ProductModel extends Model
+class ProductModel extends BaseModel
 {
     use SoftDeletes, HasFactory;
 
diff --git a/app/Models/PurchaseItemCheckModel.php b/app/Models/PurchaseItemCheckModel.php
index dda0871..bc2284b 100644
--- a/app/Models/PurchaseItemCheckModel.php
+++ b/app/Models/PurchaseItemCheckModel.php
@@ -2,14 +2,14 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Modules\SystemUser\Models\SysUserModel;
 
 /**
  * 采购单单品对账标记模型（商品明细「已对账」勾选，入库持久化；存在记录=已标记）
  */
-class PurchaseItemCheckModel extends Model
+class PurchaseItemCheckModel extends BaseModel
 {
     protected $table = 'purchase_item_check';
     protected $primaryKey = 'id';
diff --git a/app/Models/PurchaseOrderModel.php b/app/Models/PurchaseOrderModel.php
index 0bd264c..d43a16a 100644
--- a/app/Models/PurchaseOrderModel.php
+++ b/app/Models/PurchaseOrderModel.php
@@ -3,7 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Modules\SystemUser\Models\SysUserModel;
@@ -11,7 +11,7 @@ use Modules\SystemUser\Models\SysUserModel;
 /**
  * 采购单模型（按门店订单汇总生成；无独立明细表，明细直接溯源订货明细 store_order_item.purchase_id）
  */
-class PurchaseOrderModel extends Model
+class PurchaseOrderModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/StoreModel.php b/app/Models/StoreModel.php
index 9996b03..1ae5e82 100644
--- a/app/Models/StoreModel.php
+++ b/app/Models/StoreModel.php
@@ -96,4 +96,9 @@ class StoreModel extends Authenticatable
     {
         return $this->hasMany(NoticeModel::class, 'store_id', 'id');
     }
+
+    protected function serializeDate(\DateTimeInterface $date)
+    {
+        return $date->setTimezone('Asia/Shanghai')->format('Y-m-d H:i:s');
+    }
 }
diff --git a/app/Models/StoreOrderItemModel.php b/app/Models/StoreOrderItemModel.php
index f491450..ba2e885 100644
--- a/app/Models/StoreOrderItemModel.php
+++ b/app/Models/StoreOrderItemModel.php
@@ -4,14 +4,14 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 /**
  * 门店订单明细模型（下单时快照商品档案：品名/规格/单位/供应商/图文/成本价 + 等级单价，
  * 商品调价或档案变更不影响历史单据）
  */
-class StoreOrderItemModel extends Model
+class StoreOrderItemModel extends BaseModel
 {
     use HasFactory;
 
diff --git a/app/Models/StoreOrderModel.php b/app/Models/StoreOrderModel.php
index 8da6ae9..bdb16c2 100644
--- a/app/Models/StoreOrderModel.php
+++ b/app/Models/StoreOrderModel.php
@@ -3,7 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\SoftDeletes;
@@ -11,7 +11,7 @@ use Illuminate\Database\Eloquent\SoftDeletes;
 /**
  * 门店订单模型（小程序下单，快照等级价；软删除，仅已取消订单可由后台删除）
  */
-class StoreOrderModel extends Model
+class StoreOrderModel extends BaseModel
 {
     use HasFactory, SoftDeletes;
 
diff --git a/app/Models/SupplierModel.php b/app/Models/SupplierModel.php
index c32e194..88f6f1e 100644
--- a/app/Models/SupplierModel.php
+++ b/app/Models/SupplierModel.php
@@ -3,14 +3,14 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
+
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
 /**
  * 供应商模型（采购单接收方）
  */
-class SupplierModel extends Model
+class SupplierModel extends BaseModel
 {
     use SoftDeletes, HasFactory;