@font-face {
  font-family: "Vazirmatn";
  src: url("fonts/Vazirmatn-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("fonts/Vazirmatn-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #1b2430;
  --muted: #5b6878;
  --primary: #1f4e79;
  --primary-soft: #e3edf7;
  --border: #dde4ec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161d;
    --surface: #1a212b;
    --text: #e6ebf1;
    --muted: #a3afbd;
    --primary: #8fb8e3;
    --primary-soft: #22303f;
    --border: #2b3542;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Vazirmatn", Tahoma, sans-serif;
  line-height: 1.9;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { background: var(--surface); border-bottom: 1px solid var(--border); }
header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 12px; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
nav a { color: var(--primary); text-decoration: none; margin-inline-start: 16px; }
main { padding: 32px 0 48px; }
h1 { font-size: 1.7rem; line-height: 1.5; margin: 0 0 12px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
p, li { color: var(--text); }
.lead { color: var(--muted); font-size: 1.05rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin: 20px 0;
}
.note {
  background: var(--primary-soft);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 0.95rem;
}
.badge {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 12px;
  font-size: 0.85rem;
  margin-bottom: 8px;
}
ul { padding-inline-start: 22px; }
a { color: var(--primary); }
footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; padding: 20px 0 32px; }
footer a { margin-inline-end: 16px; }