#11 Accessibility pass: verify contrast, focus states, and keyboard navigation

The redesign looks good visually, but it should get an accessibility pass before it is considered finished. Suggested checks: - Confirm color contrast in navbar, mastheads, buttons, and muted text - Add a visible keyboard focus style for links and controls - Provide a skip-to-content link - Verify headings are in logical order - Ensure overlay text remains readable over all hero images Why this matters: - Better experience for keyboard and screen-reader users - Reduces accessibility regressions as more styles are added - Improves overall quality and usability