diff --git a/.github/workflows/preview-pages.yml b/.github/workflows/preview-pages.yml
new file mode 100644
index 0000000..929e4f0
--- /dev/null
+++ b/.github/workflows/preview-pages.yml
@@ -0,0 +1,48 @@
+name: Preview Pages
+on:
+  workflow_dispatch:
+permissions: {}
+concurrency:
+  group: site-data-${{ github.repository }}
+  cancel-in-progress: false
+jobs:
+  build:
+    if: github.repository == 'shendeguize/OrganonCore' && github.ref == 'refs/heads/main'
+    runs-on: ubuntu-24.04
+    timeout-minutes: 30
+    env:
+      ORGANON_SITE_PREVIEW: 'true'
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262
+        with:
+          path: product
+          persist-credentials: false
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020
+        with:
+          node-version: '22.23.2'
+      - name: Install locked site build dependencies
+        working-directory: product/tools/site
+        run: npm ci --ignore-scripts
+      - name: Build and check current site preview
+        working-directory: product
+        env:
+          ORGANON_CORE_ROOT: ${{ github.workspace }}/product
+        run: npm run check:site
+      - uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa
+        with:
+          path: product/dist/site/
+  deploy:
+    needs: build
+    runs-on: ubuntu-24.04
+    timeout-minutes: 10
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e
+        id: deployment
\ No newline at end of file
diff --git a/maintenance/pages-and-stars.md b/maintenance/pages-and-stars.md
index 9ff7ae6..677ca85 100644
--- a/maintenance/pages-and-stars.md
+++ b/maintenance/pages-and-stars.md
@@ -1,6 +1,6 @@
 # Pages and observed GitHub stars
 
-This repository publishes its site from the independent `site-data` branch. `main` CI produces development artifacts. It does not deploy them.
+Verified releases use the independent `site-data` branch. `main` CI produces development artifacts. **Preview Pages** (`preview-pages.yml`) may be dispatched manually from `main` to build, check and deploy the current source without a release receipt. A preview is not a verified release, does not update `site-data` or star history, and may be replaced by a later preview or verified release. Deploying it replaces the site currently served at the public Pages URL until another deployment succeeds.
 
 ## Publish a released site
 
diff --git a/tools/site/build.mjs b/tools/site/build.mjs
index c6fa4e1..e226e18 100644
--- a/tools/site/build.mjs
+++ b/tools/site/build.mjs
@@ -68,7 +68,7 @@ export function prepare(repo) {
     cleanUrls: true, outDir: path.join(repo, 'dist/site'), cacheDir: path.join(repo, 'dist/site-cache'),
     appearance: true, lastUpdated: false,
     locales: { root: { label: 'English', lang: 'en', themeConfig: { nav: nav('') } }, zh: { label: '简体中文', lang: 'zh-Hans', themeConfig: { nav: nav('zh/'), outlineTitle: '本页内容', returnToTopLabel: '返回顶部', sidebarMenuLabel: '目录', darkModeSwitchLabel: '外观' } } },
-    themeConfig: { releaseVersion: config.version, outline: [2, 3], socialLinks: [{ icon: 'github', link: `https://github.com/shendeguize/${role}` }], footer: { message: 'Philosophy · methods · grounds / 哲学 · 方法 · 根据', copyright: 'MIT · Organon' } },
+    themeConfig: { releaseVersion: config.version, preview: process.env.ORGANON_SITE_PREVIEW === 'true', outline: [2, 3], socialLinks: [{ icon: 'github', link: `https://github.com/shendeguize/${role}` }], footer: { message: 'Philosophy · methods · grounds / 哲学 · 方法 · 根据', copyright: 'MIT · Organon' } },
     vite: { resolve: { preserveSymlinks: true } }
   };
   write(path.join(source, '.vitepress/config.mjs'), `export default ${JSON.stringify(vp, null, 2)};\n`);
diff --git a/tools/site/theme/Layout.vue b/tools/site/theme/Layout.vue
index 2463cb4..e1ea8b0 100644
--- a/tools/site/theme/Layout.vue
+++ b/tools/site/theme/Layout.vue
@@ -6,9 +6,11 @@ const { site, lang } = useData();
 const route = useRoute();
 const router = useRouter();
 const chinese = computed(() => lang.value.startsWith('zh'));
-const edition = computed(() => /-rc\./.test(site.value.themeConfig.releaseVersion)
-  ? (chinese.value ? '候选发行版 · 等待审核' : 'Release candidate · awaiting review')
-  : (chinese.value ? '正式发行版' : 'Stable release'));
+const edition = computed(() => site.value.themeConfig.preview
+  ? (chinese.value ? '源码预览 · 非发行版' : 'Source preview · not a release')
+  : /-rc\./.test(site.value.themeConfig.releaseVersion)
+    ? (chinese.value ? '候选发行版 · 等待审核' : 'Release candidate · awaiting review')
+    : (chinese.value ? '正式发行版' : 'Stable release'));
 const peer = computed(() => {
   const base = site.value.base;
   const path = route.path.slice(base.length).replace(/^zh\//, '');
diff --git a/zh/maintenance/pages-and-stars.md b/zh/maintenance/pages-and-stars.md
index 4227ab0..cd0d7ff 100644
--- a/zh/maintenance/pages-and-stars.md
+++ b/zh/maintenance/pages-and-stars.md
@@ -1,6 +1,6 @@
 # Pages 与 GitHub 星标实测
 
-本仓库从独立的 `site-data` 分支发布站点。`main` CI 生成开发产物，不部署这些产物。
+已验证发行版使用独立的 `site-data` 分支。`main` CI 生成开发产物。可以从 `main` 手动运行 **Preview Pages**（`preview-pages.yml`），构建并检查当前源码后直接部署，但不生成发行收据。预览站点不是已验证发行版，不更新 `site-data` 或星标历史，并可被后续预览或已验证发行版替换。部署预览会替换 Pages 公开地址当前提供的站点，直至另一次部署成功。
 
 ## 发布已发行站点