:root {
  --bg: #000;
  --fg: #fff;
  --dim: #888;
  --rule: #333;
  --font: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
}

body {
  font: 14px/1.7 var(--font);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--fg); color: var(--bg); }

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 96px 16px;
}

a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 4px;
}

a:hover, a:focus-visible {
  text-decoration-color: var(--fg);
  outline: none;
}

/* ---------- index ---------- */

.index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.index li + li { margin-top: 10px; }

/* ---------- posts ---------- */

nav { margin-bottom: 64px; }

nav a { color: var(--dim); text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--fg); }

header { margin-bottom: 40px; }

h1, h2 {
  font-size: inherit;
  font-weight: 700;
  margin: 0;
}

h1 { margin-top: 40px; font-size: 16px; }

h2 { margin: 48px 0 12px; }

p { margin: 0 0 16px; }

ul, ol {
  margin: 0 0 16px;
  padding-left: 3ch;
}

li + li { margin-top: 4px; }

code {
  font: inherit;
  padding: 0 0.4ch;
  background: #1a1a1a;
}

/* Preformatted blocks scale down to fit narrow screens.
   --cols (set per block) is its widest line in characters. */
pre {
  margin: 0 0 20px;
  font-family: inherit;
  font-size: clamp(8px, calc((min(100vw, 640px) - 56px) / (var(--cols, 60) * 0.62)), 14px);
  line-height: 1.35;
  white-space: pre;
  overflow-x: auto;
}

pre.art { line-height: 1.15; margin: 0; }

pre.code {
  padding: 12px 0 12px 16px;
  border-left: 1px solid var(--rule);
  color: #ddd;
}

@media (max-width: 480px) {
  main { padding: 48px 16px; }
  nav { margin-bottom: 40px; }
}