<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">% ĺ°é˘
\startMPinclusions
vardef hilbert(expr sidelength, n) = 
  numeric u; u := 0.5sidelength;
  pair a, b, c, d;
  a := (-0.5, -0.5) * u;
  b := (-0.5, 0.5) * u;
  c := (0.5, 0.5) * u;
  d := (0.5, -0.5) * u;
  path p; 
  p := a -- b -- c -- d;
  transform sw, nw, ne, se;
  sw := identity
        scaled 0.5
        reflectedabout ((0, 0), (1, 1))
        shifted (-0.5u, -0.5u);
  nw := identity
        scaled 0.5
        shifted (-0.5u, 0.5u);
  ne := identity
        scaled 0.5
        shifted (0.5u, 0.5u);
  se := identity
        scaled 0.5
        reflectedabout ((0, 0), (1, -1))
        shifted (0.5u, -0.5u);

  for i := 2 upto n:
    p := p transformed sw for j := nw, ne, se: -- p transformed j endfor;
  endfor;
  p
enddef;
\stopMPinclusions
\startuseMPgraphic{TitleGraphic}
path p; p := hilbert(OverlayWidth, 5) randomized 1mm;
pickup pencircle scaled 1mm;
draw p yscaled(OverlayHeight / OverlayWidth) withcolor transparent(1, .5, darkgray); %\MPcolor{tan};
\stopuseMPgraphic
\defineoverlay[TitleGraphic][\useMPgraphic{TitleGraphic}]

%% é´ĺ˝ąç
\startuniqueMPgraphic{shade box}
numeric u, w, h, roundcorner, offset;
path p, q;
color shade;
u := 1cm; w := \overlaywidth; h := \overlayheight;
p := unitsquare xyscaled (w, h);
offset := 7pt;
shade := darkgray;
pickup pencircle scaled offset;
for i = 0 step .1 until 1:
    q := unitsquare xyscaled (w, h) shifted (i * offset, -i * offset);
    fill q withcolor transparent (1, .1, shade);
    draw q withcolor transparent (1, .1, shade);
endfor;
q := p shifted (-offset, offset);
draw q withcolor transparent (1, 0, white);
fill p withcolor \MPcolor{dimgray};
draw p withcolor \MPcolor{lightsteelblue};
\stopuniqueMPgraphic
\defineoverlay[shade box][\uniqueMPgraphic{shade box}]
\defineframedtext[coverbox][frame=off,background={shade box}]

\setupbackgrounds[page][background=TitleGraphic]
\startstandardmakeup
  \startcolor[white]
    \startcoverbox[middle][width=.6\textwidth,height=5cm,toffset=.8cm]
      \strut
      \hfil \bfd\ConTeXt\ čšĺž\hfil
      \blank[1cm]
      \hfil\bfa ćĺťśç\hfil
      \blank[.25cm]
      \hfil\bf 2023 ĺš´ 3 ć 31 ćĽ\hfil
    \stopcoverbox
  \stopcolor
  \blank[14cm]
\stopstandardmakeup
\setupbackgrounds[page][background=]</pre></body></html>