Core Text element override. Layout "200" (Content Intro) renders the design's
content-only-intro component; other layouts fall back to fluid_styled_content
default markup — same markup as before, just CSS-styled to match
content-only-intro's look (see .frame-type-text in _typography.scss).
Field convention on layout 200: header = title, bodytext = body,
header_link = CTA target; subheader = CTA button label when a link is set,
otherwise it renders as the eyebrow line (design never uses both at once).