Refactor customsData.vue and googleads.vue for improved layout and data handling

- Updated customsData.vue to enhance the layout of origin and destination country analysis components by organizing them into a responsive grid format.
- Modified googleads.vue to ensure that the balance displays as '0' instead of a dash when no balance is available, improving clarity in customer stats.

src/views/adweb/data/customsData.vue

@@ -255,16 +255,22 @@
                             :hs-code-data="hsCodeData" 
                         />
                     </div>
-                    <div class="analysis-item">
-                        <OriginCountryAnalysis 
-                            :origin-country-data="originCountryData"
-                        />
-                    </div>
-                    <div class="analysis-item">
-                        <DestinationCountryAnalysis 
-                            :destination-country-data="destinationCountryData"
-                        />
-                    </div>
+                    <a-row :gutter="16"> <!-- 新增行 -->
+                        <a-col :span="12"> <!-- 左侧列 -->
+                            <div class="analysis-item">
+                                <OriginCountryAnalysis 
+                                    :origin-country-data="originCountryData"
+                                />
+                            </div>
+                        </a-col>
+                        <a-col :span="12"> <!-- 右侧列 -->
+                            <div class="analysis-item">
+                                <DestinationCountryAnalysis 
+                                    :destination-country-data="destinationCountryData"
+                                />
+                            </div>
+                        </a-col>
+                    </a-row>
                     <div class="analysis-item">
                         <SupplierList :supplierData="supplierData"/>
                     </div>

src/views/adweb/marketing/googleads.vue

@@ -478,7 +478,7 @@ const getCustomerStats = async () => {
       customerId: stats.customerId ?? '-',
       descriptiveName: stats.descriptiveName ?? '-',
       currency: stats.currencyCode ?? '',
-      balance: stats.balance ? formatNumber(stats.balance) : '-',
+      balance: stats.balance ? formatNumber(stats.balance) : '0',
       cost: stats.cost ? formatNumber(stats.cost) : '-',
       conversions: stats.conversions ? formatNumber(stats.conversions) : '-',
       optiScore: stats.optiScore ? stats.optiScore * 100 : 0