Looks like engineering output. Not B2B SaaS.
Drafting-grid backgrounds. Drawing-tick rules. IBM Plex Sans / Mono / Serif. Canonical orange register colour. No gradient blobs, no stock hard-hat photos, no abstract tech imagery. The visual language signals: this is software that knows what a culvert is.
§ 01 · Marks
Monogram + Wordmark · theme-aware via currentColor§ 02 · Palette
Single accent · charcoal anchors · paper light theme- Orange-500#F08A1ECanonical accent
CTA fill, eyebrows, dim ticks, monogram bracket
- Charcoal-900#0A0A0ADefault page background
Body surface in theme-black
- Charcoal-825#1A1A1ACAD canvas
Drawing surface — dim lines + orange register cleanly
- Ink-900#000000Type extreme
Hero headlines, primary text on paper
- Paper-50#FAF7F2Light surface
Default page background in theme-paper
§ 03 · Typography
IBM Plex tri-family · Sans + Mono + Serif- 400 / 500 / 600 / 700
IBM Plex Sans
UI · body · headingsTabular numerics on every numeric column. Letter-spacing -0.024em on hero headlines.
- 400 / 500 / 600
IBM Plex Mono
Eyebrows · numerics · codeMono caps for section labels with leading-rule treatment. Letter-spacing 0.06–0.16em depending on size.
- 600
IBM Plex Serif
Editorial emphasis onlyItalic emphasis word in marketing-page headlines (the 'one accent word' pattern). Not for body copy.
§ 04 · Watermark — free-tier deliverables
- Diagonal text
- FREE — NOT FOR CONSTRUCTION
- Angle
- 30°
- Pitch
- 180px between repeats
- Colour
- 8% black on paper-50 · rgba(10,10,10,0.08)
- Font
- IBM Plex Mono 600 · 14pt · 0.18em letter-spacing
- Cover banner
- Every page top edge · 32px tall · charcoal #0A0A0A fill · paper-50 text “FREE TIER OUTPUT — NOT VALID FOR CONSTRUCTION OR PROCUREMENT — civilquants.com/upgrade”
The watermark is advertising, not DRM. Determined users defeat it; we don't pretend otherwise. The friction is sufficient for casual stripping; converters self-select into the paid tier.
Press · partner · embed.
Press kit assets land at /brand once Phase 3.4 deploys. Until then, reach out directly and we'll send you the SVG / PNG bundle and the latest brand guidelines.