Academia's sections are block patterns. Insert one from the + button in the
editor, or from Appearance → Editor → Patterns, then edit it like any other
blocks — a pattern is a starting point, not a locked component.
Everything below is generated from the theme itself, so this list cannot drift
from what you actually have installed.
Section grounds
Sections alternate their background: explanation on the page ground, proof,
prices and answers on the tinted one, with a full-bleed band to close. That is
deliberate, and it is what makes a long page read as a sequence of sections
rather than one column. If you insert several patterns of the same kind in a
row, set one of them to the Soft background style from the block inspector
to keep the alternation going.
Block styles
Alongside the patterns there are style variations you can apply to core blocks: