feat：增加 .page-container 全局样式，并替换相关的 vue 界面

src/pages/user/contact/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-gray-100">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="联系客服"

src/pages/user/faq/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen flex flex-col bg-white">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="常见问题"

src/pages/user/feedback/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-[#f5f5f5]">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="意见反馈"

src/pages/user/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-[#f5f5f5]">
+  <view class="page-container">
     <!-- 顶部背景区域 -->
     <view class="header-bg h-120rpx w-full flex items-center justify-center" />
 

src/pages/user/profile/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-[#f5f5f5]">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="个人资料"

src/pages/user/security/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-[#f5f5f5]">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="账号安全"

src/pages/user/settings/agreement/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-white">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="用户协议"

src/pages/user/settings/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-[#f5f5f5]">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="应用设置"

src/pages/user/settings/privacy/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="min-h-screen bg-white">
+  <view class="page-container">
     <!-- 顶部导航栏 -->
     <wd-navbar
       title="隐私协议"