/*
  cpt-city: bgs/radon (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(254, 240, 217)   0.000%,
  rgb(254, 240, 217)   1.000%,
  rgb(231, 188, 159)   1.000%,
  rgb(231, 188, 159)   3.000%,
  rgb(197, 162, 159)   3.000%,
  rgb(197, 162, 159)   5.000%,
  rgb(176, 108, 114)   5.000%,
  rgb(176, 108, 114)  10.000%,
  rgb(154,  60,  82)  10.000%,
  rgb(154,  60,  82)  30.000%,
  rgb(118,  46,  63)  30.000%,
  rgb(118,  46,  63) 100.000%
);