diff --git a/scripts/sync_styleguide_to_webapp_aktienberater.sh b/scripts/sync_styleguide_to_webapp_aktienberater.sh
index 7d986c8..31249ba 100755
--- a/scripts/sync_styleguide_to_webapp_aktienberater.sh
+++ b/scripts/sync_styleguide_to_webapp_aktienberater.sh
@@ -6,7 +6,8 @@ STYLEGUIDE_REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 SOURCE_CSS="$STYLEGUIDE_REPO_ROOT/styleguide.css"
 VERSION_FILE="$STYLEGUIDE_REPO_ROOT/VERSION"
 
-PORTAL_REPO_PATH="/Users/mathias/Documents/Dokumente Chouchou/Codebases/WebApp_Aktienberater"
+PORTAL_KEY="vsf"
+PORTAL_REPO_PATH=""
 PORTAL_CSS_REL="public/assets/styleguide.upstream.css"
 PORTAL_BUILT_CSS_REL="public/assets/styles.css"
 PORTAL_META_REL="public/assets/styleguide.upstream.meta.json"
@@ -17,9 +18,10 @@ COMMIT_IN_PORTAL="false"
 usage() {
   cat <<USAGE
 Usage:
-  $(basename "$0") [--portal-repo <path>] [--commit-portal]
+  $(basename "$0") [--portal <vsf|naurua>] [--portal-repo <path>] [--commit-portal]
 
 Options:
+  --portal <name>       Portal target. Defaults to vsf.
   --portal-repo <path>   Optional override for portal repository root.
   --commit-portal        Create commit in portal repo after sync.
   -h, --help             Show this help.
@@ -28,6 +30,10 @@ USAGE
 
 while [[ $# -gt 0 ]]; do
   case "$1" in
+    --portal)
+      PORTAL_KEY="${2:-}"
+      shift 2
+      ;;
     --portal-repo)
       PORTAL_REPO_PATH="${2:-}"
       shift 2
@@ -48,6 +54,24 @@ while [[ $# -gt 0 ]]; do
   esac
 done
 
+case "$PORTAL_KEY" in
+  vsf)
+    if [[ -z "$PORTAL_REPO_PATH" ]]; then
+      PORTAL_REPO_PATH="/Users/mathias/Documents/Dokumente Chouchou/Codebases/WebApp_Aktienberater"
+    fi
+    ;;
+  naurua)
+    if [[ -z "$PORTAL_REPO_PATH" ]]; then
+      PORTAL_REPO_PATH="/Users/mathias/Documents/Dokumente Chouchou/Codebases/erp_naurua"
+    fi
+    ;;
+  *)
+    echo "Unknown portal: $PORTAL_KEY" >&2
+    usage
+    exit 1
+    ;;
+esac
+
 if [[ ! -f "$SOURCE_CSS" ]]; then
   echo "Source CSS not found: $SOURCE_CSS" >&2
   exit 1
@@ -94,6 +118,31 @@ flatten_css() {
   done < "$source_file"
 }
 
+transform_portal_css() {
+  local source_file="$1"
+  local output_file="$2"
+
+  case "$PORTAL_KEY" in
+    vsf)
+      awk '
+        BEGIN { skip=0 }
+        /^:root\[data-portal="naurua"\] \{/ { skip=1; next }
+        skip && /^}/ { skip=0; next }
+        skip { next }
+        { print }
+      ' "$source_file" > "$output_file"
+      ;;
+    naurua)
+      awk '
+        BEGIN { in_override=0 }
+        /^:root\[data-portal="naurua"\] \{/ { print ":root {"; in_override=1; next }
+        in_override && /^}/ { print "}"; in_override=0; next }
+        { print }
+      ' "$source_file" > "$output_file"
+      ;;
+  esac
+}
+
 assert_no_unimported_styles() {
   local source_file="$1"
   local source_root="$2"
@@ -125,7 +174,7 @@ TMP_UPSTREAM_CSS="$(mktemp)"
 trap 'rm -f "$TMP_UPSTREAM_CSS"' EXIT
 assert_no_unimported_styles "$SOURCE_CSS" "$STYLEGUIDE_REPO_ROOT"
 flatten_css "$SOURCE_CSS" "$STYLEGUIDE_REPO_ROOT" "$TMP_UPSTREAM_CSS"
-cp "$TMP_UPSTREAM_CSS" "$PORTAL_CSS_PATH"
+transform_portal_css "$TMP_UPSTREAM_CSS" "$PORTAL_CSS_PATH"
 
 rsync -a --delete \
   --exclude ".git/" \
@@ -149,12 +198,19 @@ cat > "$PORTAL_META_PATH" <<META
 }
 META
 
-if [[ ! -f "$PORTAL_BUILD_SCRIPT_PATH" ]]; then
-  echo "Portal build script not found: $PORTAL_BUILD_SCRIPT_PATH" >&2
-  exit 1
-fi
-
-bash "$PORTAL_BUILD_SCRIPT_PATH"
+case "$PORTAL_KEY" in
+  vsf)
+    PORTAL_BUILD_SCRIPT_PATH="$PORTAL_REPO_PATH/$PORTAL_BUILD_SCRIPT_REL"
+    if [[ ! -f "$PORTAL_BUILD_SCRIPT_PATH" ]]; then
+      echo "Portal build script not found: $PORTAL_BUILD_SCRIPT_PATH" >&2
+      exit 1
+    fi
+    bash "$PORTAL_BUILD_SCRIPT_PATH"
+    ;;
+  naurua)
+    cp "$PORTAL_CSS_PATH" "$PORTAL_BUILT_CSS_PATH"
+    ;;
+esac
 
 if [[ "$COMMIT_IN_PORTAL" == "true" ]]; then
   git -C "$PORTAL_REPO_PATH" add -A \