diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33bbfa3..755490b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,6 +54,7 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 
+- **Page-Specific SEO Descriptions**: Add metadata for CLA, security, community values, and blog tag pages, with bilingual policy-page descriptions
 - **Astro 6 → 7 Major Upgrade**: `astro` ^6.4.8 → ^7.1.3, `@astrojs/vercel` ^10.0.8 → ^11.0.3, `@astrojs/mdx` ^6.0.3 → ^7.0.3 (Astro 7 ships with Vite 8 + Rolldown, stricter SSR static-build validation)
 - **astro-compress Upgrade**: ^2.3.8 → ^2.4.1 (picks up svgo 4.x, sharp 0.34.x)
 - **npm overrides Update**: Added `"svgo": ">=4.0.2"` and `"sharp": "^0.35.3"` overrides to force transitive dependencies to safe versions; removed conflicting `"vite": "^7"` override (Astro 7 requires Vite 8)
diff --git a/src/layouts/MarkdownLayout.astro b/src/layouts/MarkdownLayout.astro
index 49ba81c..c7199a0 100644
--- a/src/layouts/MarkdownLayout.astro
+++ b/src/layouts/MarkdownLayout.astro
@@ -7,13 +7,17 @@ export interface Props {
   frontmatter: {
     title?: string;
     titleEn?: string;
+    description?: string;
+    descriptionEn?: string;
   };
 }
 
 const { frontmatter } = Astro.props;
+const description = [frontmatter?.description, frontmatter?.descriptionEn].filter(Boolean).join(' - ');
 
 const metadata: MetaData = {
   title: frontmatter?.title,
+  description: description || undefined,
 };
 ---
 
diff --git a/src/pages/[...blog]/[tag]/[...page].astro b/src/pages/[...blog]/[tag]/[...page].astro
index fac3b5b..e5db30b 100644
--- a/src/pages/[...blog]/[tag]/[...page].astro
+++ b/src/pages/[...blog]/[tag]/[...page].astro
@@ -20,6 +20,7 @@ const lastPage = page.lastPage ?? 1;
 const total = page.total ?? page.data.length;
 
 const metadata = {
+  description: `Posts tagged '${tag.title}' - articles from the iFLYTEK open source blog.`,
   title: `标签：${tag.title}${currentPage > 1 ? ` — 第 ${currentPage} 页` : ''}`,
   robots: {
     index: blogTagRobots?.index,
diff --git a/src/pages/cla.astro b/src/pages/cla.astro
index 390f346..55addd2 100644
--- a/src/pages/cla.astro
+++ b/src/pages/cla.astro
@@ -2,7 +2,15 @@
 import MarkdownLayout from '~/layouts/MarkdownLayout.astro';
 ---
 
-<MarkdownLayout frontmatter={{ title: '贡献者许可协议', titleEn: 'Contributor License Agreement' }}>
+<MarkdownLayout
+  frontmatter={{
+    title: '贡献者许可协议',
+    titleEn: 'Contributor License Agreement',
+    description: '科大讯飞开源社区贡献者许可协议（CLA），涵盖贡献相关的版权与专利许可授予。',
+    descriptionEn:
+      'The iFLYTEK Open Source Community Contributor License Agreement covering copyright and patent license grants for contributions.',
+  }}
+>
   <!-- Chinese Content -->
   <div class="i18n-zh">
     <p>
diff --git a/src/pages/security.astro b/src/pages/security.astro
index 6a4d643..eeff4f5 100644
--- a/src/pages/security.astro
+++ b/src/pages/security.astro
@@ -2,7 +2,14 @@
 import MarkdownLayout from '~/layouts/MarkdownLayout.astro';
 ---
 
-<MarkdownLayout frontmatter={{ title: '安全策略', titleEn: 'Security Policy' }}>
+<MarkdownLayout
+  frontmatter={{
+    title: '安全策略',
+    titleEn: 'Security Policy',
+    description:
+      '科大讯飞开源安全策略 — How to responsibly report security vulnerabilities in iFLYTEK open source projects and what to expect from the disclosure process.',
+  }}
+>
   <!-- Chinese Content -->
   <div class="i18n-zh">
     <p>如果你在本项目中发现安全问题，请遵循以下指南。</p>
diff --git a/src/pages/values.astro b/src/pages/values.astro
index 7151f27..d5ae409 100644
--- a/src/pages/values.astro
+++ b/src/pages/values.astro
@@ -2,7 +2,14 @@
 import MarkdownLayout from '~/layouts/MarkdownLayout.astro';
 ---
 
-<MarkdownLayout frontmatter={{ title: '社区价值观', titleEn: 'Community Values' }}>
+<MarkdownLayout
+  frontmatter={{
+    title: '社区价值观',
+    titleEn: 'Community Values',
+    description:
+      '科大讯飞开源社区价值观 — The shared values of the iFLYTEK open source community: openness, inclusion, respect and collaboration.',
+  }}
+>
   <!-- Chinese Content -->
   <div class="i18n-zh">
     <p>科大讯飞开源社区建立在我们共同遵循的价值观之上，这些价值观指引着我们的互动、决策与成长。</p>