Mind Map
An idea tree laid out around a central topic, with keyboard editing as in XMind and Miro.
Presets
Looks for c2-mind-map. The eight __branch-N--color variables colour the branches, __topic--tint sets how much of that colour a first-level topic takes, the __root, __topic and __subtopic variables shape the three levels, __connector--width and --taper the curves, and __level--gap and __sibling--gap the spacing. A node’s own color wins over the palette.