:root {
  --bg: #f4f2ec;
  --text: #1c2430;
  --accent: #8a8a85;
  --accent-dark: #1f3a5f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171b22;
    --text: #eef1f6;
    --accent: #8b93a0;
    --accent-dark: #9ec4f0;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.95rem;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  overflow-wrap: anywhere;
}
main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}
a { color: var(--accent-dark); }
.back { margin: 0 0 2rem; font-size: 0.85rem; }
h1, h2, h3 {
  font-weight: 400;
  color: var(--accent-dark);
  line-height: 1.3;
}
h1 { font-size: 1.5rem; margin: 0 0 1.5rem; }
h2 {
  font-size: 1.3rem;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--accent);
}
h3 { font-size: 1.05rem; margin: 2rem 0 0.75rem; }
p { white-space: pre-line; margin: 0 0 1rem; }
ul { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin-bottom: 0.5rem; }
hr { border: none; border-top: 1px solid var(--accent); margin: 2rem 0; }