You now understand frontend accessibility.
WCAG: Target Level AA. Four principles: Perceivable, Operable, Understandable, Robust.
Semantic HTML: Use native elements. They're accessible by default.
Keyboard: Everything operable via keyboard. Visible focus indicators.
ARIA: Only when native HTML isn't enough.
Focus management: Move focus for modals and route changes.
Color: Meet contrast ratios. Don't rely on color alone.
Testing: Automated tools plus manual testing with keyboard and screen reader.