fix(frontend): 保单管理页居中+控件高度

- insurance-add/planning/list 三页 .container 加 width:100%/box-sizing/overflow-x:hidden
- insurance-add .form-input height 80rpx->88rpx 增大触控区

Ultraworked with [Sisyphus](https://github.com/OhMyOpenCode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

cfc-frontend/pages/wealth-sub/insurance-add.vue

@@ -211,11 +211,14 @@ export default {
 </script>
 
 <style>
-.container {
-  min-height: 100vh;
-  background: #f5f7fa;
-  padding: 20rpx 30rpx 120rpx;
-}
+  .container {
+    min-height: 100vh;
+    background: #f5f7fa;
+    padding: 20rpx 30rpx 120rpx;
+    width: 100%;
+    box-sizing: border-box;
+    overflow-x: hidden;
+  }
 
 .form-card {
   background: #fff;
@@ -242,8 +245,8 @@ export default {
 
 .form-input {
   width: 100%;
-  height: 80rpx;
-  line-height: 80rpx;
+  height: 88rpx;
+  line-height: 88rpx;
   background: #F5F7FA;
   border-radius: 12rpx;
   padding: 0 20rpx;

cfc-frontend/pages/wealth-sub/insurance-list.vue

@@ -140,6 +140,9 @@ export default {
   min-height: 100vh;
   background: #f5f7fa;
   padding: 20rpx 30rpx 120rpx;
+  width: 100%;
+  box-sizing: border-box;
+  overflow-x: hidden;
 }
 
 .filter-tabs {

cfc-frontend/pages/wealth-sub/insurance-planning.vue

@@ -297,11 +297,14 @@ export default {
 </script>
 
 <style scoped>
-.container {
-  min-height: 100vh;
-  background: #f5f7fa;
-  padding: 20rpx 30rpx 120rpx;
-}
+  .container {
+    min-height: 100vh;
+    background: #f5f7fa;
+    padding: 20rpx 30rpx 120rpx;
+    width: 100%;
+    box-sizing: border-box;
+    overflow-x: hidden;
+  }
 
 /* 加载 */
 .loading-state {