Meridian: a design system for SaaS products people use all day: admin consoles, CRMs and internal tools. Calm, neutral and precise: Manrope headlines over Inter, Meridian Teal with one Burnt Amber accent, tone rather than shadow. Each is an original design system (not a brand look-alike) in the open DESIGN.md format that Claude Code, Cursor and Codex read before building UI: DESIGN.md, W3C DTCG to