diff --git a/src/app/sitemap.ts b/src/app/sitemap.ts
index c4b9d1b..a2a6849 100644
--- a/src/app/sitemap.ts
+++ b/src/app/sitemap.ts
@@ -7,10 +7,15 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
   const staticPages: MetadataRoute.Sitemap = [
     { url: `${BASE_URL}/`, lastModified: new Date(), changeFrequency: 'daily', priority: 1 },
     { url: `${BASE_URL}/about`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.8 },
+    // 品牌故事（正规内容页，此前站内零入口且不在 sitemap）
+    { url: `${BASE_URL}/about/brand`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.6 },
     { url: `${BASE_URL}/services`, lastModified: new Date(), changeFrequency: 'weekly', priority: 0.9 },
     { url: `${BASE_URL}/products`, lastModified: new Date(), changeFrequency: 'weekly', priority: 0.9 },
+    // ERP升级专题（正规营销页，此前为孤儿页面：站内无入口且不进 sitemap）
+    { url: `${BASE_URL}/products/erp-upgrade`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.7 },
     { url: `${BASE_URL}/solutions`, lastModified: new Date(), changeFrequency: 'weekly', priority: 0.9 },
-    { url: `${BASE_URL}/cases`, lastModified: new Date(), changeFrequency: 'weekly', priority: 0.8 },
+    // 案例列表页：数据库 case-study 暂无已发布内容，空列表页不收录（页面保留，待产品补数据后恢复）。
+    // { url: `${BASE_URL}/cases`, lastModified: new Date(), changeFrequency: 'weekly', priority: 0.8 },
     { url: `${BASE_URL}/news`, lastModified: new Date(), changeFrequency: 'daily', priority: 0.7 },
     { url: `${BASE_URL}/team`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.6 },
     { url: `${BASE_URL}/methodology`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.6 },