:root {
  --bg: #ffffff;
  --text: #1c2430;
  --muted: #5b6676;
  --brand: #1E6FD9;
  --navy: #0C447C;
  --line: #e3e8ef;
  --card: #f5f8fc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161d;
    --text: #e6ebf2;
    --muted: #9aa6b6;
    --brand: #6aa7f0;
    --navy: #9cc4f5;
    --line: #2a3340;
    --card: #18202a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Arabic", Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
header img { width: 48px; height: 48px; border-radius: 12px; }
header strong { font-size: 22px; color: var(--navy); }
h1 { font-size: 28px; line-height: 1.25; margin: 24px 0 4px; }
h2 { font-size: 20px; margin: 32px 0 8px; color: var(--navy); }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--brand); }
nav.lang { display: flex; gap: 16px; margin: 8px 0 24px; }
section[dir="rtl"] { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 8px; }
.box { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
ul { padding-inline-start: 22px; }