# Learnings — Accessibility

## What works
- `rel="noopener noreferrer"` on all external links — privacy best practice, prevents referrer leakage (2026-03-15)
- Lighthouse Accessibility score of 100 achievable with: skip link, aria-labels on icon buttons, aria-hidden on decorative SVGs, correct heading hierarchy (2026-03-15)

## Anti-Patterns
