The site implements the standard 1C exchange protocol: 1C uploads CommerceML packages with categories, products, prices and stock, and the store applies them in background jobs. I wrote the CommerceML parsing as a separate Composer library so it can be reused on other projects. On top sit a localised catalogue with categories, filters and offers, a basket with LiqPay checkout and signed payment callbacks, a blog, FAQ, delivery and warranty pages, and a Voyager admin. Emails embed images automatically, and layouts adapt to mobile devices.