style(underwriting): 调整提交按钮样式

- 将提交按钮的样式从单独的组件移至容器组件
- 统一设置按钮底部距离为10px
- 设置按钮宽度为90%
- 添加水平居中变换
- 移除重复的样式定义
- 优化样式作用域穿透写法

src/views/ebiz/underwriting/PreliminaryUnderwritingContainer.vue

@@ -16,5 +16,11 @@ export default {
   height: 100vh;
   background: #f5f5f5;
   overflow-x: hidden;
+
+  ::v-deep .submit-btn {
+    bottom: 10px;
+    width: 90%;
+    transform: translateX(5%);
+  }
 }
 </style>

src/views/ebiz/underwriting/SupplementaryInformation.vue

@@ -35,11 +35,5 @@ export default {
   .alert-warning {
     background-color: #fef2d3;
   }
-
-  .submit-btn {
-    bottom: 10px;
-    width: 90%;
-    transform: translateX(5%);
-  }
 }
 </style>

src/views/ebiz/underwriting/UnderwritingDataCollection.vue

@@ -112,11 +112,3 @@ export default {
     <Button block class="bottom-btn submit-btn  mt20" color="#E9322E">提交预核保</Button>
   </div>
 </template>
-
-<style lang="scss" scoped>
-.submit-btn {
-  bottom: 10px;
-  width: 90%;
-  transform: translateX(5%);
-}
-</style>