feat: 更新网站页面和组件，新增多个页面（关于、专家、会员、政策等）

app/pages/sitemap.vue

@@ -0,0 +1,49 @@
+<template>
+  <section class="py-10">
+    <a-typography-title :level="1" class="!mb-2">站点地图</a-typography-title>
+    <a-typography-paragraph class="!text-gray-600 !mb-6">
+      便捷入口汇总，支持快速定位栏目与服务。
+    </a-typography-paragraph>
+
+    <a-card size="small">
+      <ul class="sitemap">
+        <li v-for="it in nav" :key="it.key">
+          <NuxtLink v-if="it.to" :to="it.to">{{ it.label }}</NuxtLink>
+          <span v-else>{{ it.label }}</span>
+          <ul v-if="it.children?.length">
+            <li v-for="c in it.children" :key="c.key">
+              <NuxtLink v-if="c.to" :to="c.to">{{ c.label }}</NuxtLink>
+              <span v-else>{{ c.label }}</span>
+            </li>
+          </ul>
+        </li>
+      </ul>
+    </a-card>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { mainNav } from '@/config/nav'
+import { usePageSeo } from '@/composables/usePageSeo'
+
+usePageSeo({ title: '站点地图', description: '站点地图与栏目入口汇总。', path: '/sitemap' })
+const nav = mainNav
+</script>
+
+<style scoped>
+.sitemap {
+  margin: 0;
+  padding-left: 18px;
+  color: var(--text-primary);
+}
+
+.sitemap li {
+  padding: 6px 0;
+}
+
+.sitemap ul {
+  margin-top: 6px;
+  padding-left: 18px;
+}
+</style>
+