React Sections · Newsletter
The reference composition:an editorial signup with a compact eyebrow, a strong-but-controlled headline, one short description, a horizontal email form on desktop (stacked on narrow screens), a subtle divider,and a small privacy note. Generous whitespace and hairlines carry the hierarchy — no cards, no shadows. The demo form validates empty/malformed email,and resolves an announced success state — try submitting an invalid address first.