:root {
  --bg:  #000000;
  --fg:  #e8e8e8;
  --dim: #ffffff;
}
* { box-sizing: border-box; }
 
body {
  background: var(--bg);
  color: var(--dim);
  font-family: ui-monospace, 'Courier New', monospace;
  font-size: 20px;
  line-height: 1.6;
  margin: 0;
  padding: 48px 20px;
}
 
main {
  max-width: 90ch;
  margin: 0 auto;
}
 
h1, h2, h3 {
  font-size: inherit;
  font-weight: bold;
  line-height: 1.3;
  margin: 2em 0 0.6em;
}
h1 { 
  margin-top: 0;
  font-size: 24px;
}
 
p { margin: 0 0 1em; }
 
a { color: inherit; }
a:hover { background: var(--fg); color: var(--bg); }
 
pre {
  white-space: pre;
  overflow-x: auto;
  margin: 1.2em 0;
}
code { font-family: inherit; }
 
hr { border: 0; border-top: 1px solid var(--dim); margin: 1em 0; }
 
blockquote {
  margin: 1em 0;
  padding-left: 1em;
  border-left: 2px solid var(--dim);
  color: var(--dim);
}
 
table { border-collapse: collapse; margin: 1.2em 0; }
th, td { text-align: left; padding: 2px 24px 2px 0; }
th { font-weight: bold; }
 
ul, ol { padding-left: 1.5em; }
li { margin: 0.2em 0; }
 
.meta {
    color: var(--dim);
    font-weight: bold;
}
 
.nav {
  margin-bottom: 2em;
  color: var(--dim);
}
.nav a { margin-right: 1.4em; }

.highlight { position: relative; }
.copy-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  font-family: inherit;
  font-size: 12px;
  background: transparent;
  color: var(--dim);
  border: 1px solid var(--dim);
  padding: 1px 7px;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
}
.highlight:hover .copy-btn,
.copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
  outline: none;
}