{{/* readings-vertical.html renders the reading pane fragment in vertical
(side-by-side columns) layout: one per liturgy.Section, all
requested versions laid out in a .display-vertical grid, one .vcol per
version -- the browser equivalent of the CLI `compare` view. Data and
role classes (heading/citation/version-label/vnum/refrain) match
readings.html so theme CSS restyles both identically; base.css owns
the .display-vertical/.vcol layout. */}}
{{range .}}