Interface intentions
The supplied interface uses semantic headings, labelled fields, visible keyboard focus, text-based results and responsive layouts. Important states include words, not color alone.
Motion controls
The header Motion control disables decorative movement. A reduced-motion system preference starts without animation. Calculations and text do not require motion, dragging or a pointer-based 3D effect.
Keyboard and smaller screens
Use Tab and standard browser controls to move between links, buttons and inputs. The mobile menu is a labelled button with an expanded state. Results remain in the page reading order below the form on smaller screens.
Printing and exports
Tool results can be printed or downloaded as plain text. Test the actual browser’s print and assistive-technology behavior for your situation. JavaScript is required for calculation and export.
Known limitations and reports
Browser date/time widgets, third-party contact forms, operating systems and assistive technologies can behave differently. This is not a certification of full accessibility compliance. Report barriers through the Contact page with non-sensitive device, browser and reproduction details.