diff --git a/.github/workflows/lint-css.yml b/.github/workflows/lint-css.yml
new file mode 100644
index 000000000..35cef4bf9
--- /dev/null
+++ b/.github/workflows/lint-css.yml
@@ -0,0 +1,74 @@
+name: Lint CSS
+
+on:
+  # Run on direct pushes to integration branches and on all pull requests.
+  push:
+    branches:
+      - develop
+      - main
+      - master
+      - trunk
+  pull_request:
+  # Allow manually triggering the workflow.
+  workflow_dispatch:
+
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    name: "Lint: CSS"
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Cache Node.js modules
+        id: cache-node-modules
+        uses: actions/cache@v4
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-node_modules-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node_modules-
+      # The lint stage doesn't run the unit tests or use code style, so no need for PHPUnit, WPCS or phpcompatibility.
+      - name: 'Install NPM packages'
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: npm ci --prefer-offline --no-audit --ignore-scripts
+
+      - name: Get only files changed in this PR
+        id: changed-files
+        uses: actions/github-script@v6
+        with:
+          script: |
+            if (!context.payload.pull_request) {
+              core.warning("No pull request context available. Skipping changed files retrieval.");
+              core.setOutput('files', '');
+              return '';
+            }
+
+            const changedFiles = await github.paginate(
+              github.rest.pulls.listFiles,
+              {
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: context.payload.pull_request.number,
+              }
+            );
+            const cssFiles = changedFiles
+              .filter(file => file.status !== 'removed')
+              .map(file => file.filename)
+              .filter(filename => filename.endsWith('.scss') || filename.endsWith('.css'))
+              .join(' ');
+
+            core.setOutput('files', cssFiles);
+            return cssFiles;
+
+      # If this is a PR then lint only css/scss changed in the PR, if not a PR then lint them all.
+      - name: Run stylelint
+        run: npx wp-scripts lint-style ${{ steps.changed-files.outputs.files || '' }}
diff --git a/.stylelintignore b/.stylelintignore
new file mode 100644
index 000000000..23cbd831f
--- /dev/null
+++ b/.stylelintignore
@@ -0,0 +1,5 @@
+build
+dist
+vendor
+coverage
+node_modules
diff --git a/.stylelintrc.json b/.stylelintrc.json
new file mode 100644
index 000000000..cb6cd0493
--- /dev/null
+++ b/.stylelintrc.json
@@ -0,0 +1,7 @@
+{
+	"extends": "@wordpress/stylelint-config/scss-stylistic",
+	"rules": {
+		"selector-class-pattern": null,
+		"scss/load-no-partial-leading-underscore": null
+	}
+}
diff --git a/package.json b/package.json
index 0cb1e6217..5772ca5f8 100644
--- a/package.json
+++ b/package.json
@@ -12,12 +12,14 @@
     "dist": "npx webpack --mode production && composer install --no-dev && composer dump-autoload --no-dev -o && ./scripts/dist.sh && composer install",
     "dist:dotorg": "npm run dist:keep-build-folder",
     "dist:keep-build-folder": "npx webpack --mode production && composer install --no-dev && composer dump-autoload --no-dev -o && ./scripts/dist.sh --keep-build-folder",
-    "lint": "./vendor/bin/phpcs && npm run lint:js",
+    "lint": "./vendor/bin/phpcs && npm run lint:js && npm run lint:css",
     "lint-staged-precommit": "lint-staged",
     "lint:php": "./vendor/bin/phpcs",
     "lint:php:fix": "./vendor/bin/phpcbf",
     "lint:js": "wp-scripts lint-js",
     "lint:js:fix": "wp-scripts lint-js --fix",
+    "lint:css": "wp-scripts lint-style",
+    "lint:css:fix": "wp-scripts lint-style --fix",
     "test:php": "./scripts/setup-phpunit.sh",
     "test:php:run": "docker compose exec phpunit vendor/bin/phpunit",
     "test:php:coverage": "docker compose exec phpunit vendor/bin/phpunit  --coverage-clover=./coverage/clover.xml --coverage-html=./coverage/html",
@@ -28,7 +30,8 @@
   },
   "lint-staged": {
     "*.php": "./vendor/bin/phpcs",
-    "*.js": "wp-scripts lint-js"
+    "*.js": "wp-scripts lint-js",
+    "*.scss": "wp-scripts lint-style"
   },
   "files": [
     "LICENSE.txt",