Accessibility
We target WCAG 2.2 level AA across the site.
What we do
- Contrast is checked programmatically on every build, and the build fails on any AA violation.
- Full keyboard operation, with a visible focus indicator and scroll offsets so a focused target is never hidden under the header.
- Interactive targets are at least 24×24 px, and 44×44 on touch screens.
- No state is carried by colour alone: the safety verdict and the heating/cooling signalling always carry text.
- Every chart ships an equivalent data table.
- Calculator sliders accept typed values and arrow keys.
- We honour
prefers-reduced-motion,prefers-reduced-transparencyandprefers-contrast.
Known gaps
Spanish pages in the question layer are still being written; in the meantime we do not publish a machine translation in their place. Write to [email protected] if you hit a barrier.