Case Study

Custom Theme & Checkout Experience

Hyvä-grade performance with a design system that keeps brand, accessibility, and Core Web Vitals in lockstep across seasonal drops.

Metric: 95+ PageSpeed, mobile-first
HyväTailwindAlpine.jsRedisCheckout UX
Magento custom theme screens

What we were solving

Legacy theme debt slowed releases and hurt mobile conversion. The brand needed a fast, accessible checkout and a design system that could refresh without rewrites.

Approach

We rebuilt with Hyvä and a token-driven design system so UX, speed, and accessibility stay aligned. Every component shipped with performance budgets and analytics hooks.

  • Atomic components mapped to design tokens for rapid seasonal updates.
  • Performance gates for LCP/CLS on every PR; strict image and font loading budgets.
  • Checkout UX experiments with A/B-friendly toggles and analytics events pre-wired.
  • Accessibility baked in: ARIA, focus states, color contrast, and keyboard flows.

Results & lessons

Reduced mobile drop-off, improved checkout completion, and delivered a theme ready for continuous deployment without sacrificing UX or speed. Schema, alt text, and heading hierarchy kept SEO healthy while performance stayed green.

  • Token-driven UI library for product cards, PDP modules, and checkout steps.
  • Lean markup, defer/async scripts, and optimized hydration for Hyvä.
  • Schema-ready blocks for PDP, breadcrumbs, and FAQs; internal linking patterns.
  • Keyboard-first flows with visible focus and reduced-motion options.