/*
  cpt-city: tl/power-0.50 (ggr)

  Nonlinear greyscales

  author: Thomas Lotze
  copyright: Free to use
  year: 2004
  url: https://phillips.shef.ac.uk/pub/cpt-city/tl
*/
linear-gradient(
  0deg,
  rgb(255, 255, 255)   0.000%,
  rgba(255, 255, 255, 0.998)   0.783%,
  rgba(255, 255, 255, 0.996)   1.562%,
  rgba(255, 255, 255, 0.992)   1.562%,
  rgba(255, 255, 255, 0.990)   2.339%,
  rgba(255, 255, 255, 0.988)   3.113%,
  rgba(255, 255, 255, 0.984)   3.113%,
  rgba(255, 255, 255, 0.982)   3.883%,
  rgba(255, 255, 255, 0.980)   4.651%,
  rgba(255, 255, 255, 0.977)   4.651%,
  rgba(255, 255, 255, 0.975)   5.415%,
  rgba(255, 255, 255, 0.973)   6.176%,
  rgba(255, 255, 255, 0.969)   6.176%,
  rgba(255, 255, 255, 0.967)   6.934%,
  rgba(255, 255, 255, 0.965)   7.689%,
  rgba(255, 255, 255, 0.961)   7.689%,
  rgba(255, 255, 255, 0.959)   8.441%,
  rgba(255, 255, 255, 0.957)   9.190%,
  rgba(255, 255, 255, 0.953)   9.190%,
  rgba(255, 255, 255, 0.951)   9.936%,
  rgba(255, 255, 255, 0.949)  10.679%,
  rgba(255, 255, 255, 0.945)  10.679%,
  rgba(255, 255, 255, 0.943)  11.419%,
  rgba(255, 255, 255, 0.941)  12.155%,
  rgba(255, 255, 255, 0.937)  12.155%,
  rgba(255, 255, 255, 0.935)  12.889%,
  rgba(255, 255, 255, 0.933)  13.619%,
  rgba(255, 255, 255, 0.929)  13.619%,
  rgba(255, 255, 255, 0.927)  14.347%,
  rgba(255, 255, 255, 0.925)  15.071%,
  rgba(255, 255, 255, 0.922)  15.071%,
  rgba(255, 255, 255, 0.920)  15.792%,
  rgba(255, 255, 255, 0.918)  16.511%,
  rgba(255, 255, 255, 0.914)  16.511%,
  rgba(255, 255, 255, 0.912)  17.226%,
  rgba(255, 255, 255, 0.910)  17.938%,
  rgba(255, 255, 255, 0.906)  17.938%,
  rgba(255, 255, 255, 0.904)  18.647%,
  rgba(255, 255, 255, 0.902)  19.353%,
  rgba(255, 255, 255, 0.898)  19.353%,
  rgba(255, 255, 255, 0.896)  20.055%,
  rgba(255, 255, 255, 0.894)  20.755%,
  rgba(255, 255, 255, 0.890)  20.755%,
  rgba(255, 255, 255, 0.888)  21.452%,
  rgba(255, 255, 255, 0.886)  22.145%,
  rgba(255, 255, 255, 0.882)  22.145%,
  rgba(255, 255, 255, 0.880)  22.836%,
  rgba(255, 255, 255, 0.878)  23.523%,
  rgba(255, 255, 255, 0.875)  23.523%,
  rgba(255, 255, 255, 0.873)  24.208%,
  rgba(255, 255, 255, 0.871)  24.889%,
  rgba(255, 255, 255, 0.867)  24.889%,
  rgba(255, 255, 255, 0.865)  25.567%,
  rgba(255, 255, 255, 0.863)  26.242%,
  rgba(255, 255, 255, 0.859)  26.242%,
  rgba(255, 255, 255, 0.857)  26.914%,
  rgba(255, 255, 255, 0.855)  27.583%,
  rgba(255, 255, 255, 0.851)  27.583%,
  rgba(255, 255, 255, 0.849)  28.249%,
  rgba(255, 255, 255, 0.847)  28.912%,
  rgba(255, 255, 255, 0.843)  28.912%,
  rgba(255, 255, 255, 0.841)  29.572%,
  rgba(255, 255, 255, 0.839)  30.228%,
  rgba(255, 255, 255, 0.835)  30.228%,
  rgba(255, 255, 255, 0.833)  30.882%,
  rgba(255, 255, 255, 0.831)  31.532%,
  rgba(255, 255, 255, 0.828)  31.532%,
  rgba(255, 255, 255, 0.826)  32.180%,
  rgba(255, 255, 255, 0.824)  32.824%,
  rgba(255, 255, 255, 0.820)  32.824%,
  rgba(255, 255, 255, 0.818)  33.466%,
  rgba(255, 255, 255, 0.816)  34.104%,
  rgba(255, 255, 255, 0.812)  34.104%,
  rgba(255, 255, 255, 0.810)  34.739%,
  rgba(255, 255, 255, 0.808)  35.371%,
  rgba(255, 255, 255, 0.804)  35.371%,
  rgba(255, 255, 255, 0.802)  36.000%,
  rgba(255, 255, 255, 0.800)  36.626%,
  rgba(255, 255, 255, 0.796)  36.626%,
  rgba(255, 255, 255, 0.794)  37.249%,
  rgba(255, 255, 255, 0.792)  37.868%,
  rgba(255, 255, 255, 0.788)  37.868%,
  rgba(255, 255, 255, 0.786)  38.485%,
  rgba(255, 255, 255, 0.784)  39.099%,
  rgba(255, 255, 255, 0.780)  39.099%,
  rgba(255, 255, 255, 0.778)  39.709%,
  rgba(255, 255, 255, 0.776)  40.317%,
  rgba(255, 255, 255, 0.772)  40.317%,
  rgba(255, 255, 255, 0.771)  40.921%,
  rgba(255, 255, 255, 0.769)  41.523%,
  rgba(255, 255, 255, 0.765)  41.523%,
  rgba(255, 255, 255, 0.763)  42.121%,
  rgba(255, 255, 255, 0.761)  42.716%,
  rgba(255, 255, 255, 0.757)  42.716%,
  rgba(255, 255, 255, 0.755)  43.308%,
  rgba(255, 255, 255, 0.753)  43.897%,
  rgba(255, 255, 255, 0.749)  43.897%,
  rgba(255, 255, 255, 0.747)  44.483%,
  rgba(255, 255, 255, 0.745)  45.066%,
  rgba(255, 255, 255, 0.741)  45.066%,
  rgba(255, 255, 255, 0.739)  45.645%,
  rgba(255, 255, 255, 0.737)  46.222%,
  rgba(255, 255, 255, 0.733)  46.222%,
  rgba(255, 255, 255, 0.731)  46.796%,
  rgba(255, 255, 255, 0.729)  47.366%,
  rgba(255, 255, 255, 0.726)  47.366%,
  rgba(255, 255, 255, 0.724)  47.934%,
  rgba(255, 255, 255, 0.722)  48.498%,
  rgba(255, 255, 255, 0.718)  48.498%,
  rgba(255, 255, 255, 0.716)  49.060%,
  rgba(255, 255, 255, 0.714)  49.618%,
  rgba(255, 255, 255, 0.710)  49.618%,
  rgba(255, 255, 255, 0.708)  50.173%,
  rgba(255, 255, 255, 0.706)  50.725%,
  rgba(255, 255, 255, 0.702)  50.725%,
  rgba(255, 255, 255, 0.700)  51.274%,
  rgba(255, 255, 255, 0.698)  51.820%,
  rgba(255, 255, 255, 0.694)  51.820%,
  rgba(255, 255, 255, 0.692)  52.363%,
  rgba(255, 255, 255, 0.690)  52.903%,
  rgba(255, 255, 255, 0.686)  52.903%,
  rgba(255, 255, 255, 0.684)  53.439%,
  rgba(255, 255, 255, 0.682)  53.973%,
  rgba(255, 255, 255, 0.678)  53.973%,
  rgba(255, 255, 255, 0.676)  54.504%,
  rgba(255, 255, 255, 0.674)  55.031%,
  rgba(255, 255, 255, 0.671)  55.031%,
  rgba(255, 255, 255, 0.669)  55.556%,
  rgba(255, 255, 255, 0.667)  56.077%,
  rgba(255, 255, 255, 0.663)  56.077%,
  rgba(255, 255, 255, 0.661)  56.595%,
  rgba(255, 255, 255, 0.659)  57.110%,
  rgba(255, 255, 255, 0.655)  57.110%,
  rgba(255, 255, 255, 0.653)  57.623%,
  rgba(255, 255, 255, 0.651)  58.132%,
  rgba(255, 255, 255, 0.647)  58.132%,
  rgba(255, 255, 255, 0.645)  58.637%,
  rgba(255, 255, 255, 0.643)  59.140%,
  rgba(255, 255, 255, 0.639)  59.140%,
  rgba(255, 255, 255, 0.637)  59.640%,
  rgba(255, 255, 255, 0.635)  60.137%,
  rgba(255, 255, 255, 0.631)  60.137%,
  rgba(255, 255, 255, 0.629)  60.630%,
  rgba(255, 255, 255, 0.627)  61.121%,
  rgba(255, 255, 255, 0.624)  61.121%,
  rgba(255, 255, 255, 0.622)  61.609%,
  rgba(255, 255, 255, 0.620)  62.093%,
  rgba(255, 255, 255, 0.616)  62.093%,
  rgba(255, 255, 255, 0.614)  62.574%,
  rgba(255, 255, 255, 0.612)  63.053%,
  rgba(255, 255, 255, 0.608)  63.053%,
  rgba(255, 255, 255, 0.606)  63.528%,
  rgba(255, 255, 255, 0.604)  64.000%,
  rgba(255, 255, 255, 0.600)  64.000%,
  rgba(255, 255, 255, 0.598)  64.469%,
  rgba(255, 255, 255, 0.596)  64.935%,
  rgba(255, 255, 255, 0.592)  64.935%,
  rgba(255, 255, 255, 0.590)  65.398%,
  rgba(255, 255, 255, 0.588)  65.858%,
  rgba(255, 255, 255, 0.584)  65.858%,
  rgba(255, 255, 255, 0.582)  66.314%,
  rgba(255, 255, 255, 0.580)  66.768%,
  rgba(255, 255, 255, 0.577)  66.768%,
  rgba(255, 255, 255, 0.575)  67.219%,
  rgba(255, 255, 255, 0.573)  67.666%,
  rgba(255, 255, 255, 0.569)  67.666%,
  rgba(255, 255, 255, 0.567)  68.111%,
  rgba(255, 255, 255, 0.565)  68.552%,
  rgba(255, 255, 255, 0.561)  68.552%,
  rgba(255, 255, 255, 0.559)  68.990%,
  rgba(255, 255, 255, 0.557)  69.426%,
  rgba(255, 255, 255, 0.553)  69.426%,
  rgba(255, 255, 255, 0.551)  69.858%,
  rgba(255, 255, 255, 0.549)  70.287%,
  rgba(255, 255, 255, 0.545)  70.287%,
  rgba(255, 255, 255, 0.543)  70.713%,
  rgba(255, 255, 255, 0.541)  71.136%,
  rgba(255, 255, 255, 0.537)  71.136%,
  rgba(255, 255, 255, 0.535)  71.556%,
  rgba(255, 255, 255, 0.533)  71.972%,
  rgba(255, 255, 255, 0.529)  71.972%,
  rgba(255, 255, 255, 0.527)  72.386%,
  rgba(255, 255, 255, 0.525)  72.797%,
  rgba(255, 255, 255, 0.522)  72.797%,
  rgba(255, 255, 255, 0.520)  73.204%,
  rgba(255, 255, 255, 0.518)  73.609%,
  rgba(255, 255, 255, 0.514)  73.609%,
  rgba(255, 255, 255, 0.512)  74.010%,
  rgba(255, 255, 255, 0.510)  74.408%,
  rgba(255, 255, 255, 0.506)  74.408%,
  rgba(255, 255, 255, 0.504)  74.803%,
  rgba(255, 255, 255, 0.502)  75.196%,
  rgba(255, 255, 255, 0.498)  75.196%,
  rgba(255, 255, 255, 0.496)  75.585%,
  rgba(255, 255, 255, 0.494)  75.971%,
  rgba(255, 255, 255, 0.490)  75.971%,
  rgba(255, 255, 255, 0.488)  76.354%,
  rgba(255, 255, 255, 0.486)  76.734%,
  rgba(255, 255, 255, 0.482)  76.734%,
  rgba(255, 255, 255, 0.480)  77.110%,
  rgba(255, 255, 255, 0.478)  77.484%,
  rgba(255, 255, 255, 0.474)  77.484%,
  rgba(255, 255, 255, 0.472)  77.855%,
  rgba(255, 255, 255, 0.471)  78.222%,
  rgba(255, 255, 255, 0.467)  78.222%,
  rgba(255, 255, 255, 0.465)  78.587%,
  rgba(255, 255, 255, 0.463)  78.948%,
  rgba(255, 255, 255, 0.459)  78.948%,
  rgba(255, 255, 255, 0.457)  79.306%,
  rgba(255, 255, 255, 0.455)  79.662%,
  rgba(255, 255, 255, 0.451)  79.662%,
  rgba(255, 255, 255, 0.449)  80.014%,
  rgba(255, 255, 255, 0.447)  80.363%,
  rgba(255, 255, 255, 0.443)  80.363%,
  rgba(255, 255, 255, 0.441)  80.709%,
  rgba(255, 255, 255, 0.439)  81.052%,
  rgba(255, 255, 255, 0.435)  81.052%,
  rgba(255, 255, 255, 0.433)  81.392%,
  rgba(255, 255, 255, 0.431)  81.729%,
  rgba(255, 255, 255, 0.427)  81.729%,
  rgba(255, 255, 255, 0.425)  82.062%,
  rgba(255, 255, 255, 0.423)  82.393%,
  rgba(255, 255, 255, 0.420)  82.393%,
  rgba(255, 255, 255, 0.418)  82.721%,
  rgba(255, 255, 255, 0.416)  83.045%,
  rgba(255, 255, 255, 0.412)  83.045%,
  rgba(255, 255, 255, 0.410)  83.366%,
  rgba(255, 255, 255, 0.408)  83.685%,
  rgba(255, 255, 255, 0.404)  83.685%,
  rgba(255, 255, 255, 0.402)  84.000%,
  rgba(255, 255, 255, 0.400)  84.312%,
  rgba(255, 255, 255, 0.396)  84.312%,
  rgba(255, 255, 255, 0.394)  84.621%,
  rgba(255, 255, 255, 0.392)  84.927%,
  rgba(255, 255, 255, 0.388)  84.927%,
  rgba(255, 255, 255, 0.386)  85.230%,
  rgba(255, 255, 255, 0.384)  85.530%,
  rgba(255, 255, 255, 0.380)  85.530%,
  rgba(255, 255, 255, 0.378)  85.827%,
  rgba(255, 255, 255, 0.377)  86.121%,
  rgba(255, 255, 255, 0.372)  86.121%,
  rgba(255, 255, 255, 0.371)  86.411%,
  rgba(255, 255, 255, 0.369)  86.699%,
  rgba(255, 255, 255, 0.365)  86.699%,
  rgba(255, 255, 255, 0.363)  86.984%,
  rgba(255, 255, 255, 0.361)  87.265%,
  rgba(255, 255, 255, 0.357)  87.265%,
  rgba(255, 255, 255, 0.355)  87.543%,
  rgba(255, 255, 255, 0.353)  87.819%,
  rgba(255, 255, 255, 0.349)  87.819%,
  rgba(255, 255, 255, 0.347)  88.091%,
  rgba(255, 255, 255, 0.345)  88.360%,
  rgba(255, 255, 255, 0.341)  88.360%,
  rgba(255, 255, 255, 0.339)  88.626%,
  rgba(255, 255, 255, 0.337)  88.889%,
  rgba(255, 255, 255, 0.333)  88.889%,
  rgba(255, 255, 255, 0.331)  89.149%,
  rgba(255, 255, 255, 0.329)  89.406%,
  rgba(255, 255, 255, 0.326)  89.406%,
  rgba(255, 255, 255, 0.324)  89.659%,
  rgba(255, 255, 255, 0.322)  89.910%,
  rgba(255, 255, 255, 0.318)  89.910%,
  rgba(255, 255, 255, 0.316)  90.158%,
  rgba(255, 255, 255, 0.314)  90.402%,
  rgba(255, 255, 255, 0.310)  90.402%,
  rgba(255, 255, 255, 0.308)  90.644%,
  rgba(255, 255, 255, 0.306)  90.882%,
  rgba(255, 255, 255, 0.302)  90.882%,
  rgba(255, 255, 255, 0.300)  91.117%,
  rgba(255, 255, 255, 0.298)  91.350%,
  rgba(255, 255, 255, 0.294)  91.350%,
  rgba(255, 255, 255, 0.292)  91.579%,
  rgba(255, 255, 255, 0.290)  91.805%,
  rgba(255, 255, 255, 0.286)  91.805%,
  rgba(255, 255, 255, 0.284)  92.028%,
  rgba(255, 255, 255, 0.282)  92.248%,
  rgba(255, 255, 255, 0.278)  92.248%,
  rgba(255, 255, 255, 0.277)  92.464%,
  rgba(255, 255, 255, 0.275)  92.678%,
  rgba(255, 255, 255, 0.271)  92.678%,
  rgba(255, 255, 255, 0.269)  92.889%,
  rgba(255, 255, 255, 0.267)  93.097%,
  rgba(255, 255, 255, 0.263)  93.097%,
  rgba(255, 255, 255, 0.261)  93.301%,
  rgba(255, 255, 255, 0.259)  93.502%,
  rgba(255, 255, 255, 0.255)  93.502%,
  rgba(255, 255, 255, 0.253)  93.701%,
  rgba(255, 255, 255, 0.251)  93.896%,
  rgba(255, 255, 255, 0.247)  93.896%,
  rgba(255, 255, 255, 0.245)  94.088%,
  rgba(255, 255, 255, 0.243)  94.278%,
  rgba(255, 255, 255, 0.239)  94.278%,
  rgba(255, 255, 255, 0.237)  94.464%,
  rgba(255, 255, 255, 0.235)  94.647%,
  rgba(255, 255, 255, 0.231)  94.647%,
  rgba(255, 255, 255, 0.229)  94.827%,
  rgba(255, 255, 255, 0.228)  95.004%,
  rgba(255, 255, 255, 0.224)  95.004%,
  rgba(255, 255, 255, 0.222)  95.177%,
  rgba(255, 255, 255, 0.220)  95.348%,
  rgba(255, 255, 255, 0.216)  95.348%,
  rgba(255, 255, 255, 0.214)  95.516%,
  rgba(255, 255, 255, 0.212)  95.680%,
  rgba(255, 255, 255, 0.208)  95.680%,
  rgba(255, 255, 255, 0.206)  95.842%,
  rgba(255, 255, 255, 0.204)  96.000%,
  rgba(255, 255, 255, 0.200)  96.000%,
  rgba(255, 255, 255, 0.198)  96.155%,
  rgba(255, 255, 255, 0.196)  96.308%,
  rgba(255, 255, 255, 0.192)  96.308%,
  rgba(255, 255, 255, 0.190)  96.457%,
  rgba(255, 255, 255, 0.188)  96.603%,
  rgba(255, 255, 255, 0.184)  96.603%,
  rgba(255, 255, 255, 0.182)  96.746%,
  rgba(255, 255, 255, 0.180)  96.886%,
  rgba(255, 255, 255, 0.176)  96.886%,
  rgba(255, 255, 255, 0.174)  97.023%,
  rgba(255, 255, 255, 0.172)  97.156%,
  rgba(255, 255, 255, 0.169)  97.156%,
  rgba(255, 255, 255, 0.167)  97.287%,
  rgba(255, 255, 255, 0.165)  97.415%,
  rgba(255, 255, 255, 0.161)  97.415%,
  rgba(255, 255, 255, 0.159)  97.539%,
  rgba(255, 255, 255, 0.157)  97.661%,
  rgba(255, 255, 255, 0.153)  97.661%,
  rgba(255, 255, 255, 0.151)  97.779%,
  rgba(255, 255, 255, 0.149)  97.895%,
  rgba(255, 255, 255, 0.145)  97.895%,
  rgba(255, 255, 255, 0.143)  98.007%,
  rgba(255, 255, 255, 0.141)  98.116%,
  rgba(255, 255, 255, 0.137)  98.116%,
  rgba(255, 255, 255, 0.135)  98.222%,
  rgba(255, 255, 255, 0.133)  98.325%,
  rgba(255, 255, 255, 0.129)  98.325%,
  rgba(255, 255, 255, 0.128)  98.425%,
  rgba(255, 255, 255, 0.126)  98.522%,
  rgba(255, 255, 255, 0.122)  98.522%,
  rgba(255, 255, 255, 0.120)  98.616%,
  rgba(255, 255, 255, 0.118)  98.707%,
  rgba(255, 255, 255, 0.114)  98.707%,
  rgba(255, 255, 255, 0.112)  98.794%,
  rgba(255, 255, 255, 0.110)  98.879%,
  rgba(255, 255, 255, 0.106)  98.879%,
  rgba(255, 255, 255, 0.104)  98.960%,
  rgba(255, 255, 255, 0.102)  99.039%,
  rgba(255, 255, 255, 0.098)  99.039%,
  rgba(255, 255, 255, 0.096)  99.114%,
  rgba(255, 255, 255, 0.094)  99.186%,
  rgba(255, 255, 255, 0.090)  99.186%,
  rgba(255, 255, 255, 0.088)  99.256%,
  rgba(255, 255, 255, 0.086)  99.322%,
  rgba(255, 255, 255, 0.082)  99.322%,
  rgba(255, 255, 255, 0.080)  99.385%,
  rgba(255, 255, 255, 0.078)  99.445%,
  rgba(255, 255, 255, 0.074)  99.445%,
  rgba(255, 255, 255, 0.072)  99.502%,
  rgba(255, 255, 255, 0.071)  99.556%,
  rgba(255, 255, 255, 0.067)  99.556%,
  rgba(255, 255, 255, 0.065)  99.606%,
  rgba(255, 255, 255, 0.063)  99.654%,
  rgba(255, 255, 255, 0.059)  99.654%,
  rgba(255, 255, 255, 0.057)  99.699%,
  rgba(255, 255, 255, 0.055)  99.740%,
  rgba(255, 255, 255, 0.051)  99.740%,
  rgba(255, 255, 255, 0.049)  99.778%,
  rgba(255, 255, 255, 0.047)  99.814%,
  rgba(255, 255, 255, 0.043)  99.814%,
  rgba(255, 255, 255, 0.041)  99.846%,
  rgba(255, 255, 255, 0.039)  99.875%,
  rgba(255, 255, 255, 0.035)  99.875%,
  rgba(255, 255, 255, 0.033)  99.902%,
  rgba(255, 255, 255, 0.031)  99.925%,
  rgba(255, 255, 255, 0.028)  99.925%,
  rgba(255, 255, 255, 0.025)  99.945%,
  rgba(255, 255, 255, 0.024)  99.962%,
  rgba(255, 255, 255, 0.020)  99.962%,
  rgba(255, 255, 255, 0.018)  99.975%,
  rgba(255, 255, 255, 0.016)  99.986%,
  rgba(255, 255, 255, 0.012)  99.986%,
  rgba(255, 255, 255, 0.010)  99.994%,
  rgba(255, 255, 255, 0.008)  99.999%,
  rgba(255, 255, 255, 0.004)  99.999%,
  rgba(255, 255, 255, 0.004) 100.000%,
  rgba(255, 255, 255, 0.004) 100.000%
);