Teaching Elements' tabs swap a paragraph — parallel, comparable facts about one thing. Tab Lab swaps a result — named fields plus a stated boundary — for a decision with real consequences per option. If the panel underneath is prose, use plain tabs. If it's fields and a tradeoff, use this.
Markup shape: a .tl-tabs button row (each button carries the label and a short kicker), a .tl-result panel with a summary line, a four-cell dl, and one .tl-boundary aside whose accent color can shift per option via a CSS custom property (--tlc) the same way the section-accent token on the index cards works.