Implemented accessibility features
- Keyboard-operable native controls and visible focus indicators.
- Skip link to the main analysis result.
- Programmatic labels, headings, landmarks and live status announcements.
- Tabular alternative for chart data and textual summaries for candidate events.
- Responsive layouts without intentional horizontal page scrolling.
- Reduced-motion handling for users who request it.
- 3D orbit context is supplemental; no decision depends on the graphic alone.
Internal review status
An automated semantic and responsive smoke test and a manual code review were completed against a WCAG 2.2 AA-oriented checklist. The package contains the test matrix and results.
This is an internal engineering review. It is not a formal Section 508 certification, third-party Accessibility Conformance Report or completed VPAT.
Known limitations
- Interactive Plotly graphics may require additional screen-reader testing across specific browser and assistive-technology combinations.
- The date-picker experience varies by browser and operating system.
- Colour contrast and zoom were checked programmatically and manually for the supplied interface, but formal procurement review may require an external assessor.
- Downloaded PNG charts are images; the JSON, CSV and chart-data table provide the machine-readable alternatives.
Reporting a problem
Report the affected page, browser, assistive technology and the action you were trying to complete through the contact route on Sylvester Kaczmarek's website.