Symmetric spacing around headings
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Rule · bucket: judgment · severity: note · detector: none · since: v0.1.0
Section: Things to avoid
Group: Spacing and layout

Forbidden:
  Equal margin above and below a section heading

Instead:
  A heading belongs to the content beneath it. Space above must exceed space below, usually by 2–3×. This one rule fixes more "it looks off and I can't say why" than any other in this file.