Two levels you cannot separate
The technical part is the foundation: markup with meaningful semantics, sufficient contrast, operation without a mouse, a visible focus, tap targets you can hit on a phone. That can be laid down correctly once in the sitepackage.
The editorial part is created afresh every day. Every image calls for a decision about its alternative text, every heading one about its level, every link a text that makes sense outside its sentence. Without that level, the best technical foundation is used up again within six months.
Contrast is a decision about colour, not about taste
The most common conflict in these projects: a house colour that fails the required contrast on a light background. The reflex is to adjust the brand, which meets understandable resistance.
The better route is a second colour value for body text that keeps the same saturation and is only darker. The brand colour stays where it works: on filled areas, at large type sizes, and on dark backgrounds. The identity stays recognisable and the text stays readable.
Document it honestly
An accessibility statement includes a note of known limitations. That feels uncomfortable and is still the better route: a statement claiming completeness does not survive the first audit.
So we record what has been reached, what is still open, and when it will be tackled. That can be checked, which makes it more solid than a blanket claim.