Inter SemiBold 600 — Subheadline (22–26px desktop)
Subheadline Sample
Inter Regular 400 — Body Text (18px minimum — floor never smaller)
Body text sample. Line height 1.65×. Max line length 65 characters. Audience is 44–58. Small type equals brand failure. Never use Inter Light or Thin at body size.
Inter SemiBold 600 — CTA Button (17px) — Amber Gold bg, Deep Navy text
Inter Medium 500 — Nav / UI (15px)
Nav Label Sample
IBM Plex Mono Regular — Data / Lab Labels (15–16px) — data labels ONLY
TESTOSTERONE: 412 ng/dL · FREE T: 8.2 pg/mL
Inter Regular 400 — Trust Bar / Disclaimers (13–14px) — Slate Gray
Physician-reviewed | Evidence-tiered | Zero clinical claims | Built for men who think
Spacing Scale — 8px Base Unit
--space-10.5rem / 8px
--space-21rem / 16px
--space-31.5rem / 24px
--space-42rem / 32px
--space-52.5rem / 40px
--space-63rem / 48px
--space-84rem / 64px
--space-105rem / 80px
--space-126rem / 96px
--space-168rem / 128px
CHECKPOINT_A3 — Design system applied. No site content. Phase B sections to be built task-by-task per operator approval.