/*
  cpt-city: tl/power-3.00 (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)   0.131%,
  rgba(255, 255, 255, 0.996)   0.262%,
  rgba(255, 255, 255, 0.992)   0.262%,
  rgba(255, 255, 255, 0.990)   0.394%,
  rgba(255, 255, 255, 0.988)   0.526%,
  rgba(255, 255, 255, 0.984)   0.526%,
  rgba(255, 255, 255, 0.982)   0.658%,
  rgba(255, 255, 255, 0.980)   0.790%,
  rgba(255, 255, 255, 0.977)   0.790%,
  rgba(255, 255, 255, 0.975)   0.923%,
  rgba(255, 255, 255, 0.973)   1.057%,
  rgba(255, 255, 255, 0.969)   1.057%,
  rgba(255, 255, 255, 0.967)   1.191%,
  rgba(255, 255, 255, 0.965)   1.325%,
  rgba(255, 255, 255, 0.961)   1.325%,
  rgba(255, 255, 255, 0.959)   1.459%,
  rgba(255, 255, 255, 0.957)   1.594%,
  rgba(255, 255, 255, 0.953)   1.594%,
  rgba(255, 255, 255, 0.951)   1.729%,
  rgba(255, 255, 255, 0.949)   1.865%,
  rgba(255, 255, 255, 0.945)   1.865%,
  rgba(255, 255, 255, 0.943)   2.001%,
  rgba(255, 255, 255, 0.941)   2.137%,
  rgba(255, 255, 255, 0.937)   2.137%,
  rgba(255, 255, 255, 0.935)   2.273%,
  rgba(255, 255, 255, 0.933)   2.411%,
  rgba(255, 255, 255, 0.929)   2.411%,
  rgba(255, 255, 255, 0.927)   2.548%,
  rgba(255, 255, 255, 0.925)   2.686%,
  rgba(255, 255, 255, 0.922)   2.686%,
  rgba(255, 255, 255, 0.920)   2.824%,
  rgba(255, 255, 255, 0.918)   2.963%,
  rgba(255, 255, 255, 0.914)   2.963%,
  rgba(255, 255, 255, 0.912)   3.102%,
  rgba(255, 255, 255, 0.910)   3.241%,
  rgba(255, 255, 255, 0.906)   3.241%,
  rgba(255, 255, 255, 0.904)   3.381%,
  rgba(255, 255, 255, 0.902)   3.521%,
  rgba(255, 255, 255, 0.898)   3.521%,
  rgba(255, 255, 255, 0.896)   3.662%,
  rgba(255, 255, 255, 0.894)   3.803%,
  rgba(255, 255, 255, 0.890)   3.803%,
  rgba(255, 255, 255, 0.888)   3.944%,
  rgba(255, 255, 255, 0.886)   4.086%,
  rgba(255, 255, 255, 0.882)   4.086%,
  rgba(255, 255, 255, 0.880)   4.229%,
  rgba(255, 255, 255, 0.878)   4.371%,
  rgba(255, 255, 255, 0.875)   4.371%,
  rgba(255, 255, 255, 0.873)   4.514%,
  rgba(255, 255, 255, 0.871)   4.658%,
  rgba(255, 255, 255, 0.867)   4.658%,
  rgba(255, 255, 255, 0.865)   4.802%,
  rgba(255, 255, 255, 0.863)   4.947%,
  rgba(255, 255, 255, 0.859)   4.947%,
  rgba(255, 255, 255, 0.857)   5.091%,
  rgba(255, 255, 255, 0.855)   5.237%,
  rgba(255, 255, 255, 0.851)   5.237%,
  rgba(255, 255, 255, 0.849)   5.383%,
  rgba(255, 255, 255, 0.847)   5.529%,
  rgba(255, 255, 255, 0.843)   5.529%,
  rgba(255, 255, 255, 0.841)   5.676%,
  rgba(255, 255, 255, 0.839)   5.823%,
  rgba(255, 255, 255, 0.835)   5.823%,
  rgba(255, 255, 255, 0.833)   5.970%,
  rgba(255, 255, 255, 0.831)   6.118%,
  rgba(255, 255, 255, 0.828)   6.118%,
  rgba(255, 255, 255, 0.826)   6.267%,
  rgba(255, 255, 255, 0.824)   6.416%,
  rgba(255, 255, 255, 0.820)   6.416%,
  rgba(255, 255, 255, 0.818)   6.565%,
  rgba(255, 255, 255, 0.816)   6.715%,
  rgba(255, 255, 255, 0.812)   6.715%,
  rgba(255, 255, 255, 0.810)   6.866%,
  rgba(255, 255, 255, 0.808)   7.017%,
  rgba(255, 255, 255, 0.804)   7.017%,
  rgba(255, 255, 255, 0.802)   7.168%,
  rgba(255, 255, 255, 0.800)   7.320%,
  rgba(255, 255, 255, 0.796)   7.320%,
  rgba(255, 255, 255, 0.794)   7.473%,
  rgba(255, 255, 255, 0.792)   7.625%,
  rgba(255, 255, 255, 0.788)   7.625%,
  rgba(255, 255, 255, 0.786)   7.779%,
  rgba(255, 255, 255, 0.784)   7.933%,
  rgba(255, 255, 255, 0.780)   7.933%,
  rgba(255, 255, 255, 0.778)   8.087%,
  rgba(255, 255, 255, 0.776)   8.242%,
  rgba(255, 255, 255, 0.772)   8.242%,
  rgba(255, 255, 255, 0.771)   8.398%,
  rgba(255, 255, 255, 0.769)   8.554%,
  rgba(255, 255, 255, 0.765)   8.554%,
  rgba(255, 255, 255, 0.763)   8.711%,
  rgba(255, 255, 255, 0.761)   8.868%,
  rgba(255, 255, 255, 0.757)   8.868%,
  rgba(255, 255, 255, 0.755)   9.025%,
  rgba(255, 255, 255, 0.753)   9.184%,
  rgba(255, 255, 255, 0.749)   9.184%,
  rgba(255, 255, 255, 0.747)   9.342%,
  rgba(255, 255, 255, 0.745)   9.502%,
  rgba(255, 255, 255, 0.741)   9.502%,
  rgba(255, 255, 255, 0.739)   9.662%,
  rgba(255, 255, 255, 0.737)   9.822%,
  rgba(255, 255, 255, 0.733)   9.822%,
  rgba(255, 255, 255, 0.731)   9.983%,
  rgba(255, 255, 255, 0.729)  10.145%,
  rgba(255, 255, 255, 0.726)  10.145%,
  rgba(255, 255, 255, 0.724)  10.307%,
  rgba(255, 255, 255, 0.722)  10.470%,
  rgba(255, 255, 255, 0.718)  10.470%,
  rgba(255, 255, 255, 0.716)  10.633%,
  rgba(255, 255, 255, 0.714)  10.797%,
  rgba(255, 255, 255, 0.710)  10.797%,
  rgba(255, 255, 255, 0.708)  10.962%,
  rgba(255, 255, 255, 0.706)  11.127%,
  rgba(255, 255, 255, 0.702)  11.127%,
  rgba(255, 255, 255, 0.700)  11.293%,
  rgba(255, 255, 255, 0.698)  11.459%,
  rgba(255, 255, 255, 0.694)  11.459%,
  rgba(255, 255, 255, 0.692)  11.626%,
  rgba(255, 255, 255, 0.690)  11.794%,
  rgba(255, 255, 255, 0.686)  11.794%,
  rgba(255, 255, 255, 0.684)  11.962%,
  rgba(255, 255, 255, 0.682)  12.131%,
  rgba(255, 255, 255, 0.678)  12.131%,
  rgba(255, 255, 255, 0.676)  12.301%,
  rgba(255, 255, 255, 0.674)  12.471%,
  rgba(255, 255, 255, 0.671)  12.471%,
  rgba(255, 255, 255, 0.669)  12.642%,
  rgba(255, 255, 255, 0.667)  12.814%,
  rgba(255, 255, 255, 0.663)  12.814%,
  rgba(255, 255, 255, 0.661)  12.986%,
  rgba(255, 255, 255, 0.659)  13.159%,
  rgba(255, 255, 255, 0.655)  13.159%,
  rgba(255, 255, 255, 0.653)  13.333%,
  rgba(255, 255, 255, 0.651)  13.507%,
  rgba(255, 255, 255, 0.647)  13.507%,
  rgba(255, 255, 255, 0.645)  13.682%,
  rgba(255, 255, 255, 0.643)  13.858%,
  rgba(255, 255, 255, 0.639)  13.858%,
  rgba(255, 255, 255, 0.637)  14.034%,
  rgba(255, 255, 255, 0.635)  14.212%,
  rgba(255, 255, 255, 0.631)  14.212%,
  rgba(255, 255, 255, 0.629)  14.390%,
  rgba(255, 255, 255, 0.627)  14.568%,
  rgba(255, 255, 255, 0.624)  14.568%,
  rgba(255, 255, 255, 0.622)  14.748%,
  rgba(255, 255, 255, 0.620)  14.928%,
  rgba(255, 255, 255, 0.616)  14.928%,
  rgba(255, 255, 255, 0.614)  15.109%,
  rgba(255, 255, 255, 0.612)  15.291%,
  rgba(255, 255, 255, 0.608)  15.291%,
  rgba(255, 255, 255, 0.606)  15.473%,
  rgba(255, 255, 255, 0.604)  15.657%,
  rgba(255, 255, 255, 0.600)  15.657%,
  rgba(255, 255, 255, 0.598)  15.841%,
  rgba(255, 255, 255, 0.596)  16.026%,
  rgba(255, 255, 255, 0.592)  16.026%,
  rgba(255, 255, 255, 0.590)  16.212%,
  rgba(255, 255, 255, 0.588)  16.398%,
  rgba(255, 255, 255, 0.584)  16.398%,
  rgba(255, 255, 255, 0.582)  16.586%,
  rgba(255, 255, 255, 0.580)  16.774%,
  rgba(255, 255, 255, 0.577)  16.774%,
  rgba(255, 255, 255, 0.575)  16.963%,
  rgba(255, 255, 255, 0.573)  17.153%,
  rgba(255, 255, 255, 0.569)  17.153%,
  rgba(255, 255, 255, 0.567)  17.344%,
  rgba(255, 255, 255, 0.565)  17.536%,
  rgba(255, 255, 255, 0.561)  17.536%,
  rgba(255, 255, 255, 0.559)  17.729%,
  rgba(255, 255, 255, 0.557)  17.922%,
  rgba(255, 255, 255, 0.553)  17.922%,
  rgba(255, 255, 255, 0.551)  18.117%,
  rgba(255, 255, 255, 0.549)  18.312%,
  rgba(255, 255, 255, 0.545)  18.312%,
  rgba(255, 255, 255, 0.543)  18.508%,
  rgba(255, 255, 255, 0.541)  18.706%,
  rgba(255, 255, 255, 0.537)  18.706%,
  rgba(255, 255, 255, 0.535)  18.904%,
  rgba(255, 255, 255, 0.533)  19.103%,
  rgba(255, 255, 255, 0.529)  19.103%,
  rgba(255, 255, 255, 0.527)  19.303%,
  rgba(255, 255, 255, 0.525)  19.505%,
  rgba(255, 255, 255, 0.522)  19.505%,
  rgba(255, 255, 255, 0.520)  19.707%,
  rgba(255, 255, 255, 0.518)  19.910%,
  rgba(255, 255, 255, 0.514)  19.910%,
  rgba(255, 255, 255, 0.512)  20.114%,
  rgba(255, 255, 255, 0.510)  20.320%,
  rgba(255, 255, 255, 0.506)  20.320%,
  rgba(255, 255, 255, 0.504)  20.526%,
  rgba(255, 255, 255, 0.502)  20.734%,
  rgba(255, 255, 255, 0.498)  20.734%,
  rgba(255, 255, 255, 0.496)  20.942%,
  rgba(255, 255, 255, 0.494)  21.152%,
  rgba(255, 255, 255, 0.490)  21.152%,
  rgba(255, 255, 255, 0.488)  21.363%,
  rgba(255, 255, 255, 0.486)  21.575%,
  rgba(255, 255, 255, 0.482)  21.575%,
  rgba(255, 255, 255, 0.480)  21.788%,
  rgba(255, 255, 255, 0.478)  22.002%,
  rgba(255, 255, 255, 0.474)  22.002%,
  rgba(255, 255, 255, 0.472)  22.218%,
  rgba(255, 255, 255, 0.471)  22.434%,
  rgba(255, 255, 255, 0.467)  22.434%,
  rgba(255, 255, 255, 0.465)  22.652%,
  rgba(255, 255, 255, 0.463)  22.871%,
  rgba(255, 255, 255, 0.459)  22.871%,
  rgba(255, 255, 255, 0.457)  23.092%,
  rgba(255, 255, 255, 0.455)  23.313%,
  rgba(255, 255, 255, 0.451)  23.313%,
  rgba(255, 255, 255, 0.449)  23.536%,
  rgba(255, 255, 255, 0.447)  23.761%,
  rgba(255, 255, 255, 0.443)  23.761%,
  rgba(255, 255, 255, 0.441)  23.986%,
  rgba(255, 255, 255, 0.439)  24.213%,
  rgba(255, 255, 255, 0.435)  24.213%,
  rgba(255, 255, 255, 0.433)  24.441%,
  rgba(255, 255, 255, 0.431)  24.671%,
  rgba(255, 255, 255, 0.427)  24.671%,
  rgba(255, 255, 255, 0.425)  24.902%,
  rgba(255, 255, 255, 0.423)  25.135%,
  rgba(255, 255, 255, 0.420)  25.135%,
  rgba(255, 255, 255, 0.418)  25.369%,
  rgba(255, 255, 255, 0.416)  25.604%,
  rgba(255, 255, 255, 0.412)  25.604%,
  rgba(255, 255, 255, 0.410)  25.841%,
  rgba(255, 255, 255, 0.408)  26.079%,
  rgba(255, 255, 255, 0.404)  26.079%,
  rgba(255, 255, 255, 0.402)  26.319%,
  rgba(255, 255, 255, 0.400)  26.561%,
  rgba(255, 255, 255, 0.396)  26.561%,
  rgba(255, 255, 255, 0.394)  26.804%,
  rgba(255, 255, 255, 0.392)  27.049%,
  rgba(255, 255, 255, 0.388)  27.049%,
  rgba(255, 255, 255, 0.386)  27.295%,
  rgba(255, 255, 255, 0.384)  27.544%,
  rgba(255, 255, 255, 0.380)  27.544%,
  rgba(255, 255, 255, 0.378)  27.793%,
  rgba(255, 255, 255, 0.377)  28.045%,
  rgba(255, 255, 255, 0.372)  28.045%,
  rgba(255, 255, 255, 0.371)  28.298%,
  rgba(255, 255, 255, 0.369)  28.553%,
  rgba(255, 255, 255, 0.365)  28.553%,
  rgba(255, 255, 255, 0.363)  28.811%,
  rgba(255, 255, 255, 0.361)  29.069%,
  rgba(255, 255, 255, 0.357)  29.069%,
  rgba(255, 255, 255, 0.355)  29.330%,
  rgba(255, 255, 255, 0.353)  29.593%,
  rgba(255, 255, 255, 0.349)  29.593%,
  rgba(255, 255, 255, 0.347)  29.858%,
  rgba(255, 255, 255, 0.345)  30.124%,
  rgba(255, 255, 255, 0.341)  30.124%,
  rgba(255, 255, 255, 0.339)  30.393%,
  rgba(255, 255, 255, 0.337)  30.664%,
  rgba(255, 255, 255, 0.333)  30.664%,
  rgba(255, 255, 255, 0.331)  30.937%,
  rgba(255, 255, 255, 0.329)  31.212%,
  rgba(255, 255, 255, 0.326)  31.212%,
  rgba(255, 255, 255, 0.324)  31.489%,
  rgba(255, 255, 255, 0.322)  31.769%,
  rgba(255, 255, 255, 0.318)  31.769%,
  rgba(255, 255, 255, 0.316)  32.051%,
  rgba(255, 255, 255, 0.314)  32.335%,
  rgba(255, 255, 255, 0.310)  32.335%,
  rgba(255, 255, 255, 0.308)  32.622%,
  rgba(255, 255, 255, 0.306)  32.911%,
  rgba(255, 255, 255, 0.302)  32.911%,
  rgba(255, 255, 255, 0.300)  33.203%,
  rgba(255, 255, 255, 0.298)  33.497%,
  rgba(255, 255, 255, 0.294)  33.497%,
  rgba(255, 255, 255, 0.292)  33.794%,
  rgba(255, 255, 255, 0.290)  34.094%,
  rgba(255, 255, 255, 0.286)  34.094%,
  rgba(255, 255, 255, 0.284)  34.396%,
  rgba(255, 255, 255, 0.282)  34.701%,
  rgba(255, 255, 255, 0.278)  34.701%,
  rgba(255, 255, 255, 0.277)  35.009%,
  rgba(255, 255, 255, 0.275)  35.320%,
  rgba(255, 255, 255, 0.271)  35.320%,
  rgba(255, 255, 255, 0.269)  35.634%,
  rgba(255, 255, 255, 0.267)  35.951%,
  rgba(255, 255, 255, 0.263)  35.951%,
  rgba(255, 255, 255, 0.261)  36.271%,
  rgba(255, 255, 255, 0.259)  36.595%,
  rgba(255, 255, 255, 0.255)  36.595%,
  rgba(255, 255, 255, 0.253)  36.922%,
  rgba(255, 255, 255, 0.251)  37.252%,
  rgba(255, 255, 255, 0.247)  37.252%,
  rgba(255, 255, 255, 0.245)  37.586%,
  rgba(255, 255, 255, 0.243)  37.923%,
  rgba(255, 255, 255, 0.239)  37.923%,
  rgba(255, 255, 255, 0.237)  38.264%,
  rgba(255, 255, 255, 0.235)  38.609%,
  rgba(255, 255, 255, 0.231)  38.609%,
  rgba(255, 255, 255, 0.229)  38.958%,
  rgba(255, 255, 255, 0.228)  39.311%,
  rgba(255, 255, 255, 0.224)  39.311%,
  rgba(255, 255, 255, 0.222)  39.668%,
  rgba(255, 255, 255, 0.220)  40.029%,
  rgba(255, 255, 255, 0.216)  40.029%,
  rgba(255, 255, 255, 0.214)  40.395%,
  rgba(255, 255, 255, 0.212)  40.765%,
  rgba(255, 255, 255, 0.208)  40.765%,
  rgba(255, 255, 255, 0.206)  41.140%,
  rgba(255, 255, 255, 0.204)  41.520%,
  rgba(255, 255, 255, 0.200)  41.520%,
  rgba(255, 255, 255, 0.198)  41.904%,
  rgba(255, 255, 255, 0.196)  42.294%,
  rgba(255, 255, 255, 0.192)  42.294%,
  rgba(255, 255, 255, 0.190)  42.690%,
  rgba(255, 255, 255, 0.188)  43.090%,
  rgba(255, 255, 255, 0.184)  43.090%,
  rgba(255, 255, 255, 0.182)  43.497%,
  rgba(255, 255, 255, 0.180)  43.909%,
  rgba(255, 255, 255, 0.176)  43.909%,
  rgba(255, 255, 255, 0.174)  44.328%,
  rgba(255, 255, 255, 0.172)  44.753%,
  rgba(255, 255, 255, 0.169)  44.753%,
  rgba(255, 255, 255, 0.167)  45.184%,
  rgba(255, 255, 255, 0.165)  45.623%,
  rgba(255, 255, 255, 0.161)  45.623%,
  rgba(255, 255, 255, 0.159)  46.069%,
  rgba(255, 255, 255, 0.157)  46.522%,
  rgba(255, 255, 255, 0.153)  46.522%,
  rgba(255, 255, 255, 0.151)  46.983%,
  rgba(255, 255, 255, 0.149)  47.452%,
  rgba(255, 255, 255, 0.145)  47.452%,
  rgba(255, 255, 255, 0.143)  47.930%,
  rgba(255, 255, 255, 0.141)  48.417%,
  rgba(255, 255, 255, 0.137)  48.417%,
  rgba(255, 255, 255, 0.135)  48.913%,
  rgba(255, 255, 255, 0.133)  49.419%,
  rgba(255, 255, 255, 0.129)  49.419%,
  rgba(255, 255, 255, 0.128)  49.935%,
  rgba(255, 255, 255, 0.126)  50.462%,
  rgba(255, 255, 255, 0.122)  50.462%,
  rgba(255, 255, 255, 0.120)  51.000%,
  rgba(255, 255, 255, 0.118)  51.551%,
  rgba(255, 255, 255, 0.114)  51.551%,
  rgba(255, 255, 255, 0.112)  52.114%,
  rgba(255, 255, 255, 0.110)  52.691%,
  rgba(255, 255, 255, 0.106)  52.691%,
  rgba(255, 255, 255, 0.104)  53.283%,
  rgba(255, 255, 255, 0.102)  53.889%,
  rgba(255, 255, 255, 0.098)  53.889%,
  rgba(255, 255, 255, 0.096)  54.513%,
  rgba(255, 255, 255, 0.094)  55.153%,
  rgba(255, 255, 255, 0.090)  55.153%,
  rgba(255, 255, 255, 0.088)  55.813%,
  rgba(255, 255, 255, 0.086)  56.493%,
  rgba(255, 255, 255, 0.082)  56.493%,
  rgba(255, 255, 255, 0.080)  57.195%,
  rgba(255, 255, 255, 0.078)  57.920%,
  rgba(255, 255, 255, 0.074)  57.920%,
  rgba(255, 255, 255, 0.072)  58.672%,
  rgba(255, 255, 255, 0.071)  59.452%,
  rgba(255, 255, 255, 0.067)  59.452%,
  rgba(255, 255, 255, 0.065)  60.263%,
  rgba(255, 255, 255, 0.063)  61.109%,
  rgba(255, 255, 255, 0.059)  61.109%,
  rgba(255, 255, 255, 0.057)  61.993%,
  rgba(255, 255, 255, 0.055)  62.920%,
  rgba(255, 255, 255, 0.051)  62.920%,
  rgba(255, 255, 255, 0.049)  63.897%,
  rgba(255, 255, 255, 0.047)  64.929%,
  rgba(255, 255, 255, 0.043)  64.929%,
  rgba(255, 255, 255, 0.041)  66.025%,
  rgba(255, 255, 255, 0.039)  67.198%,
  rgba(255, 255, 255, 0.035)  67.198%,
  rgba(255, 255, 255, 0.033)  68.461%,
  rgba(255, 255, 255, 0.031)  69.834%,
  rgba(255, 255, 255, 0.028)  69.834%,
  rgba(255, 255, 255, 0.025)  71.345%,
  rgba(255, 255, 255, 0.024)  73.034%,
  rgba(255, 255, 255, 0.020)  73.034%,
  rgba(255, 255, 255, 0.018)  74.967%,
  rgba(255, 255, 255, 0.016)  77.256%,
  rgba(255, 255, 255, 0.012)  77.256%,
  rgba(255, 255, 255, 0.010)  80.132%,
  rgba(255, 255, 255, 0.008)  84.230%,
  rgba(255, 255, 255, 0.004)  84.230%,
  rgba(255, 255, 255, 0.004) 100.000%,
  rgba(255, 255, 255, 0.004) 100.000%
);