/*
  cpt-city: bgs/buried-valley (cpt)

  British Geological Survey, schemes from the GeoIndex site

  author: British Geological Survey
  copyright: Crown Copyright, UK Open Government Licence for Public Sector Information v3.0
  year: 2026
  url: https://phillips.shef.ac.uk/pub/cpt-city/bgs
*/
linear-gradient(
  0deg,
  rgb( 40, 146, 199)   0.000%,
  rgb( 40, 146, 199)  33.333%,
  rgb(191, 212, 138)  33.333%,
  rgb(191, 212, 138)  66.667%,
  rgb(252, 179,  68)  66.667%,
  rgb(252, 179,  68) 100.000%
);