diff --git a/.gitea/workflows/deploy-pages.yaml b/.gitea/workflows/deploy-pages.yaml
index 1ec3591..187a7bd 100644
--- a/.gitea/workflows/deploy-pages.yaml
+++ b/.gitea/workflows/deploy-pages.yaml
@@ -8,20 +8,23 @@ on:
 jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
+    container:
+      image: node:20-bookworm
     env:
-      CF_PAGES_PROJECT: ${{ vars.CF_PAGES_PROJECT }} # 例: blog
+      CF_PAGES_PROJECT: ${{ vars.CF_PAGES_PROJECT }}
       PROD_BRANCH: "main"
       CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
       CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
 
     steps:
+      - name: Check Node runtime
+        run: node -v && node -e "console.log('crypto?', !!globalThis.crypto)"
+
       - name: Checkout
         uses: https://github.com/actions/checkout@v4
 
       - name: Install cobalt (prebuilt)
-        shell: bash
         run: |
-          set -euo pipefail
           apt-get update && apt-get install -y ca-certificates curl tar git
           curl -fsSL https://zyedidia.github.io/eget.sh | sh
           ./eget cobalt-org/cobalt.rs --to /usr/local/bin/cobalt
@@ -30,7 +33,6 @@ jobs:
       - name: Build site with cobalt
         run: cobalt build # 出力: ./_site
 
-      # --- Wrangler ActionでPagesにデプロイ ---
       - name: Deploy to Cloudflare Pages
         uses: https://github.com/cloudflare/wrangler-action@v3
         with: