:root {
  --demo-hero-image: url('/assets/demo/eu/images/eu-hero.jpg?v=20260820-2');
}

@supports (background-image: image-set(url('image.avif') type('image/avif'))) {
  :root {
    --demo-hero-image: image-set(
      url('/assets/demo/eu/images/eu-hero.avif?v=20260820-2') type('image/avif'),
      url('/assets/demo/eu/images/eu-hero.webp?v=20260820-2') type('image/webp'),
      url('/assets/demo/eu/images/eu-hero.jpg?v=20260820-2') type('image/jpeg')
    );
  }
}