# Reference Brief — Header 27

## Retrieval metadata

- Family: `headers`; module: `header27`
- Complete source retrieved from authenticated Relume MCP on 2026-07-15.
- Variant: centered email capture followed by one landscape image.

## Retrieved facts

- One content-height section and constrained container centered on one axis.
- Upper finite-width region owns exactly one `h1`, one description, one email
  form, one submit, and one legal line with terms link.
- Form is stacked initially and becomes `1fr + max-content` from small width.
- Lower region is exactly one full-container landscape image, aspect-video,
  rounded and cover-fitted.
- Copy/form precedes image at every width.
- No video, dialog, overlay, navigation, logo, second form/image/CTA, or duplicate tree.

## Interaction and responsive states

- Source controls email in client state and handles submit only with console output.
- Ren10 must add visible label, native validity, one error, live success, real form
  action and terms URL while preserving no-JavaScript submission.
- 320–639: form stacked. From 640: row. Copy-to-image and section gaps increase
  at medium/large bands; image remains full container width.

## Unavailable evidence and exclusions

- No rendered preview or resolved tokens were returned.
- Exclude source text/classes/URLs/assets/framework dependencies/injected HTML,
  placeholder label/action, media extras, primitive palette tokens and raw layout skeletons.