A well-made site was audited for what separates it from a competent one, and the
answer was not its ingredients. It runs the default stack, Next and Tailwind and
Geist, with no world and no unusual technique. What it has is attention to the
surfaces a browser renders for you: 29 focus-visible rules, 15 scrollbar rules,
and styled text selection, caret, underline offset and scroll behaviour.
Those are the cheapest signal that a page was built rather than assembled, and
the ones a model skips most reliably, because nobody asks for them and nothing
looks broken without them. The floor already covers contrast, depth, spacing,
measure, motion and states; this is the layer under all of it.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>