What has been done deliberately
Text is set in Trebuchet at a base size of 17 pixels with a line height of 1.65, and every colour pairing on the site was checked against the 4.5:1 contrast ratio for body text and 3:1 for large text. Every interactive element is reachable and operable by keyboard alone, and the focus indicator is a visible three-pixel outline rather than the browser default.
The map is not an image with data trapped inside it. Each place is a focusable element with an accessible name, and the same information appears underneath as a legend and, on the consortium and fieldwork pages, as a table. The animated hero draws a single static frame for anyone whose system asks for reduced motion, and stops entirely when it is off screen.
The site loads no third-party scripts, so no external widget can override the page's keyboard behaviour or contrast.
