diff --git a/backend/app/services/order.go b/backend/app/services/order.go
index e47bb53..26a14b7 100644
--- a/backend/app/services/order.go
+++ b/backend/app/services/order.go
@@ -70,7 +70,11 @@ func (s *order) GetUserOrder(ctx context.Context, userID int64, id string) (*use
 	return &dto, nil
 }
 
-func (s *order) Create(ctx context.Context, userID int64, form *transaction_dto.OrderCreateForm) (*transaction_dto.OrderCreateResponse, error) {
+func (s *order) Create(
+	ctx context.Context,
+	userID int64,
+	form *transaction_dto.OrderCreateForm,
+) (*transaction_dto.OrderCreateResponse, error) {
 	if userID == 0 {
 		return nil, errorx.ErrUnauthorized
 	}
@@ -166,7 +170,12 @@ func (s *order) Create(ctx context.Context, userID int64, form *transaction_dto.
 	}, nil
 }
 
-func (s *order) Pay(ctx context.Context, userID int64, id string, form *transaction_dto.OrderPayForm) (*transaction_dto.OrderPayResponse, error) {
+func (s *order) Pay(
+	ctx context.Context,
+	userID int64,
+	id string,
+	form *transaction_dto.OrderPayForm,
+) (*transaction_dto.OrderPayResponse, error) {
 	if userID == 0 {
 		return nil, errorx.ErrUnauthorized
 	}
@@ -174,7 +183,9 @@ func (s *order) Pay(ctx context.Context, userID int64, id string, form *transact
 	oid := cast.ToInt64(id)
 
 	// Fetch Order
-	o, err := models.OrderQuery.WithContext(ctx).Where(models.OrderQuery.ID.Eq(oid), models.OrderQuery.UserID.Eq(uid)).First()
+	o, err := models.OrderQuery.WithContext(ctx).
+		Where(models.OrderQuery.ID.Eq(oid), models.OrderQuery.UserID.Eq(uid)).
+		First()
 	if err != nil {
 		return nil, errorx.ErrRecordNotFound
 	}
@@ -253,7 +264,9 @@ func (s *order) settleOrder(ctx context.Context, o *models.Order, method, extern
 		items, _ := tx.OrderItem.WithContext(ctx).Where(tx.OrderItem.OrderID.Eq(o.ID)).Find()
 		for _, item := range items {
 			// Check if access already exists (idempotency)
-			exists, _ := tx.ContentAccess.WithContext(ctx).Where(tx.ContentAccess.UserID.Eq(o.UserID), tx.ContentAccess.ContentID.Eq(item.ContentID)).Exists()
+			exists, _ := tx.ContentAccess.WithContext(ctx).
+				Where(tx.ContentAccess.UserID.Eq(o.UserID), tx.ContentAccess.ContentID.Eq(item.ContentID)).
+				Exists()
 			if exists {
 				continue
 			}
diff --git a/backend/app/services/wallet.go b/backend/app/services/wallet.go
index 36fa978..f4cdc30 100644
--- a/backend/app/services/wallet.go
+++ b/backend/app/services/wallet.go
@@ -45,10 +45,11 @@ func (s *wallet) GetWallet(ctx context.Context, userID int64) (*user_dto.WalletR
 	for _, o := range orders {
 		var txType string
 		var title string
-		if o.Type == consts.OrderTypeContentPurchase {
+		switch o.Type {
+		case consts.OrderTypeContentPurchase:
 			txType = "expense"
 			title = "购买内容"
-		} else if o.Type == consts.OrderTypeRecharge {
+		case consts.OrderTypeRecharge:
 			txType = "income"
 			title = "钱包充值"
 		}
@@ -68,7 +69,11 @@ func (s *wallet) GetWallet(ctx context.Context, userID int64) (*user_dto.WalletR
 	}, nil
 }
 
-func (s *wallet) Recharge(ctx context.Context, userID int64, form *user_dto.RechargeForm) (*user_dto.RechargeResponse, error) {
+func (s *wallet) Recharge(
+	ctx context.Context,
+	userID int64,
+	form *user_dto.RechargeForm,
+) (*user_dto.RechargeResponse, error) {
 	amount := int64(form.Amount * 100)
 	if amount <= 0 {
 		return nil, errorx.ErrBadRequest.WithMsg("金额无效")