:root { --bg: #f7f6f2; --card: #fff; --ink: #1f2420; --muted: #6b6a63; --accent: #1d5c3a; --line: #e4e1d8; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #161917; --card: #1f2321; --ink: #e8e6df; --muted: #a09e95; --accent: #7fc49c; --line: #2f3431; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.9 "Segoe UI", Tahoma, "Noto Naskh Arabic", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 60px; }
header { margin-bottom: 24px; }
h1 { font-size: 30px; line-height: 1.4; margin: 0 0 8px; }
h1 span { display: block; font-size: 20px; color: var(--muted); font-weight: 500; }
h2 { font-size: 20px; margin: 0 0 8px; color: var(--accent); }
section { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; margin-bottom: 16px; }
.lead { font-size: 18px; }
.muted { color: var(--muted); font-size: 14px; margin: 0; }
.en { font-family: "Segoe UI", Arial, sans-serif; line-height: 1.7; }
.en h1 { font-size: 24px; }
.en h2 { margin-top: 16px; }
ul { padding-inline-start: 22px; margin: 0; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
code { background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; font-size: 14px; direction: ltr; unicode-bidi: embed; }
footer { text-align: center; margin-top: 24px; font-size: 15px; }