Headless Shopify Hydrogen storefront with custom product configurator. **Challenge:** A 7-year-old WooCommerce store that couldn't keep up with the brand's editorial ambitions. Page loads averaged 8 seconds on mobile. **Approach:** Rebuilt on Shopify Hydrogen + Next.js, with image CDN, edge-rendered PDPs, and a custom fit-prediction widget. **Outcome:** - 3× mobile conversion rate - LCP dropped from 8.2s to 1.4s - AOV up 18% via smarter product recommendations