Accessibility

Target standard

We work towards WCAG 2.2 level AA. Full conformance is not claimed: there has been no external audit and no certification so far.

Already implemented

• Semantic structure with exactly one main heading and one main content area per page
• Full keyboard operation including visible focus states
• Labelled form fields, error messages and status messages via live regions
• Touch targets of at least 44 pixels on mobile devices
• Light and dark mode with checked contrast values
• Support for prefers-reduced-motion
• Responsive layout from 320 pixels width without horizontal scrolling
• Trilingual page language declaration

Known limitations

• Complex geometric diagrams convey relationships visually; their text alternatives are brief.
• Some interactive simulations are primarily visual and are being complemented with text step by step.
• No independent audit report is available yet.

Last review

Internal review by the project team, last carried out on 28 August 2026, covering keyboard operation, focus order, contrast, zoom, screen reader output and reduced motion.

Feedback

If you encounter a barrier, write to us via the contact route stated in the imprint or through the contact form. We reply and document the reported barrier.

Planned improvements

• More detailed text alternatives for all system diagrams
• External audit before public launch
• Extended contrast and text size options in the terminal concept