add_action( 'woocommerce_after_main_content', 'insert_image_after_categories', 15 );
function insert_image_after_categories() {
    if ( is_front_page() ) {
        echo '<div class="custom-banner" style="margin: 40px auto; text-align: center;">
                <img src="https://firstidea.in/wp-content/uploads/2025/06/WhatsApp-Image-2025-06-06-at-13.34.24.jpeg" alt="First Idea Banner" style="width:100%; max-width:1200px; height:auto;" />
              </div>';
    }
}
