/*
  cpt-city: pm/pm3d12 (cpt)

  Various gradients from Gnuplot: the original default pm3d
  colour gradient by Petr Mikulík from Masaryk University,
  nice rgb schemes listed in “help palette rgbformulae”
  and gradients from the pm3dcolors.dem demo script

  author: Petr Mikulik
  copyright: GPLv2
  year: 2006
  url: https://phillips.shef.ac.uk/pub/cpt-city/pm
*/
linear-gradient(
  0deg,
  rgb(  0,   0,   0)   0.000%,
  rgb( 25,  25,  25)   1.587%,
  rgb( 51,  51,  51)   3.175%,
  rgb( 75,  75,  75)   4.762%,
  rgb( 99,  99,  99)   6.349%,
  rgb(122, 122, 122)   7.936%,
  rgb(144, 144, 144)   9.524%,
  rgb(164, 164, 164)  11.111%,
  rgb(182, 183, 182)  12.698%,
  rgb(199, 199, 199)  14.286%,
  rgb(213, 214, 214)  15.873%,
  rgb(226, 227, 226)  17.460%,
  rgb(236, 237, 237)  19.048%,
  rgb(243, 245, 245)  20.635%,
  rgb(248, 251, 251)  22.222%,
  rgb(251, 254, 254)  23.809%,
  rgb(251, 255, 255)  25.397%,
  rgb(248, 252, 253)  26.984%,
  rgb(243, 247, 249)  28.571%,
  rgb(235, 240, 242)  30.159%,
  rgb(225, 230, 232)  31.746%,
  rgb(213, 217, 221)  33.333%,
  rgb(198, 202, 207)  34.921%,
  rgb(182, 185, 191)  36.508%,
  rgb(164, 167, 173)  38.095%,
  rgb(144, 146, 154)  39.682%,
  rgb(124, 125, 133)  41.270%,
  rgb(102, 103, 111)  42.857%,
  rgb( 80,  80,  87)  44.444%,
  rgb( 57,  57,  63)  46.032%,
  rgb( 34,  34,  38)  47.619%,
  rgb( 12,  11,  13)  49.206%,
  rgb(  0,   0,   0)  50.794%,
  rgb(  0,   0,   0)  52.381%,
  rgb(  0,   0,   0)  53.968%,
  rgb(  0,   0,   0)  55.556%,
  rgb(  0,   0,   0)  57.143%,
  rgb(  0,   0,   0)  58.730%,
  rgb(  0,   0,   0)  60.318%,
  rgb(  0,   0,   0)  61.905%,
  rgb(  0,   0,   0)  63.492%,
  rgb(  0,   0,   0)  65.079%,
  rgb(  0,   0,   0)  66.667%,
  rgb(  0,   0,   0)  68.254%,
  rgb(  0,   0,   0)  69.841%,
  rgb(  0,   0,   0)  71.429%,
  rgb(  0,   0,   0)  73.016%,
  rgb(  0,   0,   0)  74.603%,
  rgb(  0,   0,   0)  76.191%,
  rgb(  0,   0,   0)  77.778%,
  rgb(  0,   0,   0)  79.365%,
  rgb(  0,   0,   0)  80.952%,
  rgb(  0,   0,   0)  82.540%,
  rgb(  0,   0,   0)  84.127%,
  rgb(  0,   0,   0)  85.714%,
  rgb(  0,   0,   0)  87.302%,
  rgb(  0,   0,   0)  88.889%,
  rgb(  0,   0,   0)  90.476%,
  rgb(  0,   0,   0)  92.064%,
  rgb(  0,   0,   0)  93.651%,
  rgb(  0,   0,   0)  95.238%,
  rgb(  0,   0,   0)  96.825%,
  rgb(  0,   0,   0)  98.413%,
  rgb(  0,   0,   0) 100.000%
);