:root {
  color-scheme: light dark;
  --ink: #1a1a1a;
  --muted: #5c5c5c;
  --rule: #d8d3c8;
  --accent: #0b5d3b;
  --bg: #fbfaf7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ecebe6;
    --muted: #a4a29b;
    --rule: #3a3a36;
    --accent: #6fc79c;
    --bg: #16181a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2.5rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--ink);
  font-family: Tahoma, "Segoe UI", Vazirmatn, "Noto Naskh Arabic", sans-serif;
  font-size: 1.0625rem;
  line-height: 2;
  max-width: 46rem;
}

header { border-bottom: 1px solid var(--rule); padding-bottom: 1.5rem; margin-bottom: 2rem; }

h1 { font-size: 1.9rem; line-height: 1.5; margin: 0 0 .5rem; font-weight: 700; }
h2 { font-size: 1.2rem; margin: 2.5rem 0 .75rem; font-weight: 700; }

p, li { max-width: 68ch; }
p { margin: 0 0 1rem; }

.lead { color: var(--muted); font-size: 1.05rem; margin: 0; }

nav { margin-top: 1.25rem; display: flex; flex-wrap: wrap; gap: .25rem 1.5rem; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { text-decoration: none; }

ul { padding-inline-start: 1.4rem; margin: 0 0 1.25rem; }
li { margin-bottom: .5rem; }

code {
  direction: ltr;
  display: inline-block;
  font-family: "Consolas", "DejaVu Sans Mono", monospace;
  font-size: .9em;
  background: rgba(127, 127, 127, .12);
  padding: .1rem .4rem;
  border-radius: 4px;
}

footer { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: .95rem; }