@heydon I just went in a delightful circle:
Earlier my feed gave me a Marijke Luttekes post on buttons vs links:
https://marijkeluttekes.dev/blog/articles/2024/11/04/html-link-or-button-that-is-the-question/
Then I got this button article, which made me question a good full approach for lightboxes and similar, so I remembered Adrian Roselli's https://adrianroselli.com/2020/02/block-links-cards-clickable-regions-etc.html
And re-reading that led back to Heydon Pickering's own: https://inclusive-components.design/cards/
Now I want to skip my actual work for the day so I can experiment combining the collective advice into demonstrations.