diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 818a9fd..3153d32 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -53,7 +53,7 @@ jobs:
           npm run build
           if [ -f CNAME ] && [ "${{ github.repository_owner }}" = "mume" ]; then cp CNAME dist/CNAME; fi
         env:
-          VITE_BASE: ${{ steps.pages.outputs.base_path }}/
+          VITE_BASE: ${{ env.VITE_BASE || format('{0}/', steps.pages.outputs.base_path) }}
 
       - name: Collect PRs to deploy
         uses: actions/github-script@v9
diff --git a/scripts/ci-env.sh b/scripts/ci-env.sh
index c280ee9..55e9544 100755
--- a/scripts/ci-env.sh
+++ b/scripts/ci-env.sh
@@ -4,18 +4,20 @@
 export VITE_LAST_UPDATED=$(git log -1 --format=%cd --date=format:'%B %Y')
 echo "VITE_LAST_UPDATED=$VITE_LAST_UPDATED" >> $GITHUB_ENV
 
+OWNER="${GITHUB_REPOSITORY_OWNER:-mume}"
+REPO=$(echo "${GITHUB_REPOSITORY:-${OWNER}/mume.github.io}" | cut -d'/' -f2)
+
 # Set VITE_HOSTNAME from CNAME file if it exists
-if [ -f CNAME ] && [ "$GITHUB_REPOSITORY_OWNER" = "mume" ]; then
-  export VITE_HOSTNAME="https://$(cat CNAME)"
+if [ -f CNAME ] && [ "$OWNER" = "mume" ]; then
+  CNAME_VAL=$(tr -d '[:space:]' < CNAME)
+  export VITE_HOSTNAME="https://$CNAME_VAL"
 else
   # Fallback for PR previews if host/prefix are provided via env
   if [ -n "$PREVIEW_HOST" ]; then
     export VITE_HOSTNAME="https://${PREVIEW_HOST}${PREVIEW_PREFIX}"
   else
     # Fallback for forks or main repo without CNAME
-    OWNER="${GITHUB_REPOSITORY_OWNER:-mume}"
-    REPO=$(echo "${GITHUB_REPOSITORY:-${OWNER}/docs}" | cut -d'/' -f2)
-    if [ "$OWNER" = "mume" ] && [ "$REPO" = "docs" ]; then
+    if [ "$OWNER" = "mume" ] && [ "$REPO" = "mume.github.io" ]; then
       export VITE_HOSTNAME="https://docs.mume.org"
     elif [ "$REPO" = "$OWNER.github.io" ]; then
       export VITE_HOSTNAME="https://$OWNER.github.io"
@@ -25,3 +27,9 @@ else
   fi
 fi
 echo "VITE_HOSTNAME=$VITE_HOSTNAME" >> $GITHUB_ENV
+
+# Explicitly set VITE_BASE=/ for the official production environment
+if [ "$OWNER" = "mume" ] && [ "$REPO" = "mume.github.io" ]; then
+  export VITE_BASE="/"
+  echo "VITE_BASE=$VITE_BASE" >> $GITHUB_ENV
+fi