Access for every chapter

Accessibility

Commitment

The site supports keyboard navigation, visible focus, semantic headings, labeled controls, reduced-motion preferences, readable contrast, inline form errors, and text alternatives for meaningful imagery.

Media

Selected video controls are keyboard accessible. Captions and transcripts will be attached only when verified source materials are available; contact us if you need an accessible alternative for a specific item.

Feedback

Use the contact form to report a barrier and describe the page, device, browser, and assistance needed.