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PROTEUS Visual Language — brand guide

The written brand guide. For the interactive version see the Pages site (source in ../site/); a PDF is at brand-guide.pdf.

Thermocline encodes one story: a rocky planet's transition from a magma ocean to a water world. Red = hot state, black = deep time, blue = cool state. Dark-first, instrument-grade, editorial.

Contents

  • Colour — palette, surfaces, the phase ramp, light/dark.
  • Typography — Sora · Instrument Sans · Spline Sans Mono.
  • Logo — the glyph, wordmark, colorways, clear space, file matrix.
  • Motifs — the glyph motif, phase band, hairline structure.
  • Module colours — the domain colours (CVD-checked).
  • Figure conventions — data-viz rules for papers.
  • Applications — web, docs, decks, poster, figures, community.

The five rules

  1. One story: every surface reads hot → cold, inside → out. Never reverse the phase gradient.
  2. Dark-first: Void #05070B is the default surface; Paper #F2F5F7 is the mirror. Never pure black/white.
  3. Magma is scarce: one hot moment per surface. Blue (Ocean/Azure) is the interactive/living layer.
  4. Type does the work: tight Sora display, Instrument Sans body, Spline Sans Mono for every label and number.
  5. Homogeneity over novelty: a docs page and a poster must read as one product. Everything traces to ../tokens/tokens.css.