/*
  cpt-city: jm/ad/ad-a (cpt)

  Abysmal Deep

  From teal colored shallows through darker and darker blues
  until all detail is lost in the black stygian depths.

  author: Jim Mossman
  copyright: Attribution required
  year: 2005
  url: https://phillips.shef.ac.uk/pub/cpt-city/jm/ad
*/
linear-gradient(
  0deg,
  rgb(  0,   0,  80)   0.000%,
  rgb(  0,   0,  80)   1.695%,
  rgb(  0,   0,  85)   1.695%,
  rgb(  0,   0,  85)   3.390%,
  rgb(  0,   0,  90)   3.390%,
  rgb(  0,   0,  90)   5.085%,
  rgb(  0,   1,  95)   5.085%,
  rgb(  0,   1,  95)   6.780%,
  rgb(  2,   6, 100)   6.780%,
  rgb(  2,   6, 100)   8.475%,
  rgb(  7,  11, 105)   8.475%,
  rgb(  7,  11, 105)  10.169%,
  rgb( 12,  26, 110)  10.169%,
  rgb( 12,  26, 110)  11.864%,
  rgb( 17,  31, 115)  11.864%,
  rgb( 17,  31, 115)  13.559%,
  rgb( 22,  36, 120)  13.559%,
  rgb( 22,  36, 120)  15.254%,
  rgb( 27,  41, 125)  15.254%,
  rgb( 27,  41, 125)  16.949%,
  rgb( 32,  46, 130)  16.949%,
  rgb( 32,  46, 130)  18.644%,
  rgb( 37,  51, 135)  18.644%,
  rgb( 37,  51, 135)  20.339%,
  rgb( 42,  56, 140)  20.339%,
  rgb( 42,  56, 140)  22.034%,
  rgb( 47,  61, 145)  22.034%,
  rgb( 47,  61, 145)  23.729%,
  rgb( 52,  66, 150)  23.729%,
  rgb( 52,  66, 150)  25.424%,
  rgb( 57,  71, 155)  25.424%,
  rgb( 57,  71, 155)  27.119%,
  rgb( 62,  76, 160)  27.119%,
  rgb( 62,  76, 160)  28.814%,
  rgb( 67,  81, 165)  28.814%,
  rgb( 67,  81, 165)  30.509%,
  rgb( 72,  86, 170)  30.509%,
  rgb( 72,  86, 170)  32.203%,
  rgb( 77,  91, 175)  32.203%,
  rgb( 77,  91, 175)  33.898%,
  rgb( 82,  96, 180)  33.898%,
  rgb( 82,  96, 180)  35.593%,
  rgb( 87, 101, 185)  35.593%,
  rgb( 87, 101, 185)  37.288%,
  rgb( 92, 106, 190)  37.288%,
  rgb( 92, 106, 190)  38.983%,
  rgb( 94, 108, 195)  38.983%,
  rgb( 94, 108, 195)  40.678%,
  rgb( 97, 111, 200)  40.678%,
  rgb( 97, 111, 200)  42.373%,
  rgb( 97, 111, 205)  42.373%,
  rgb( 97, 111, 205)  44.068%,
  rgb( 97, 111, 209)  44.068%,
  rgb( 97, 111, 209)  45.763%,
  rgb( 97, 111, 213)  45.763%,
  rgb( 97, 111, 213)  47.458%,
  rgb( 97, 111, 217)  47.458%,
  rgb( 97, 111, 217)  49.153%,
  rgb( 97, 111, 221)  49.153%,
  rgb( 97, 111, 221)  50.847%,
  rgb( 97, 111, 225)  50.847%,
  rgb( 97, 111, 225)  52.542%,
  rgb(102, 116, 230)  52.542%,
  rgb(102, 116, 230)  54.237%,
  rgb(107, 121, 235)  54.237%,
  rgb(107, 121, 235)  55.932%,
  rgb(112, 126, 240)  55.932%,
  rgb(112, 126, 240)  57.627%,
  rgb(117, 131, 245)  57.627%,
  rgb(117, 131, 245)  59.322%,
  rgb(122, 136, 250)  59.322%,
  rgb(122, 136, 250)  61.017%,
  rgb(127, 141, 255)  61.017%,
  rgb(127, 141, 255)  62.712%,
  rgb(127, 149, 255)  62.712%,
  rgb(127, 149, 255)  64.407%,
  rgb(127, 152, 255)  64.407%,
  rgb(127, 152, 255)  66.102%,
  rgb(127, 159, 255)  66.102%,
  rgb(127, 159, 255)  67.797%,
  rgb(127, 162, 255)  67.797%,
  rgb(127, 162, 255)  69.492%,
  rgb(127, 169, 255)  69.492%,
  rgb(127, 169, 255)  71.186%,
  rgb(127, 176, 255)  71.186%,
  rgb(127, 176, 255)  72.881%,
  rgb(127, 183, 255)  72.881%,
  rgb(127, 183, 255)  74.576%,
  rgb(127, 190, 255)  74.576%,
  rgb(127, 190, 255)  76.271%,
  rgb(127, 197, 255)  76.271%,
  rgb(127, 197, 255)  77.966%,
  rgb(127, 204, 255)  77.966%,
  rgb(127, 204, 255)  79.661%,
  rgb(127, 211, 255)  79.661%,
  rgb(127, 211, 255)  81.356%,
  rgb(127, 218, 255)  81.356%,
  rgb(127, 218, 255)  83.051%,
  rgb(127, 225, 255)  83.051%,
  rgb(127, 225, 255)  84.746%,
  rgb(127, 232, 255)  84.746%,
  rgb(127, 232, 255)  86.441%,
  rgb(123, 240, 255)  86.441%,
  rgb(123, 240, 255)  88.136%,
  rgb(119, 247, 255)  88.136%,
  rgb(119, 247, 255)  89.831%,
  rgb(115, 255, 255)  89.831%,
  rgb(115, 255, 255)  91.525%,
  rgb(115, 255, 247)  91.525%,
  rgb(115, 255, 247)  93.220%,
  rgb(115, 255, 240)  93.220%,
  rgb(115, 255, 240)  94.915%,
  rgb(115, 255, 232)  94.915%,
  rgb(115, 255, 232)  96.610%,
  rgb(115, 255, 224)  96.610%,
  rgb(115, 255, 224)  98.305%,
  rgb(115, 255, 217)  98.305%,
  rgb(115, 255, 217) 100.000%
);