02 / DESIGN SYSTEMS
Design systems
Reusable patterns reduce repeated decisions and make quality easier to maintain.
02. Reuse with intention.
- Document reusable components, their states and accessible behaviour.
- Prefer native HTML and CSS where they meet the need. Add JavaScript for a clear interaction requirement.
- Share design tokens and remove unused variants, styles and dependencies.
- Make maintenance part of delivery: clear naming, concise documentation and ownership.
Standards & resources
These references inform the approach. They are not certifications or claims that every criterion has been audited on this site.
- RGESN: ecodesign of digital services, a framework for examining the service throughout its lifecycle.
- W3C Web Content Accessibility Guidelines 2.2, testable accessibility requirements.
- Core Web Vitals, user-experience performance metrics and thresholds.