Any card can carry an extra panel that opens in a centered popup. The popup is built from blocks — headings, paragraphs, images and a link button — so you can put a whole appendix behind one button.

1. 1Open a card and turn on the extra detail.
2. 2Name the button — "Learn more", "Specs", "Buy the part", whatever fits.
3. 3Add heading, text, image and link blocks in the order you want them read.
4. 4Check the popup in Live preview; it matches what the visitor sees.

Most people need the short version. A few need the warning, the torque spec or the spare-part link. This serves both without turning the page into a wall of text.