:root {
  --bg: #0a0e27;
  --card: #12183a;
  --card-elevated: #161b3d;
  --border: rgba(78, 233, 214, 0.15);
  --cyan: #4ee9d6;
  --pink-deep: #ff4b81;
  --orange: #ff8c42;
  --text: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.45);
  --grad-warm: linear-gradient(90deg, #ff8c42, #ff4b81);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Tajawal', sans-serif;
  background: var(--bg); color: var(--text);
  line-height: 1.9;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 820px; margin: 0 auto; padding: 0 22px; }
header {
  border-bottom: 1px solid var(--border);
  background: rgba(10,14,39,0.85); backdrop-filter: blur(12px);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 70px; max-width: 820px; margin: 0 auto; padding: 0 22px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo { width: 38px; height: 38px; border-radius: 11px; background: var(--grad-warm); display: grid; place-items: center; font-weight: 800; font-size: 19px; }
.brand .name { font-weight: 800; font-size: 21px; }
.back { color: var(--text-secondary); font-size: 14px; font-weight: 500; }
.doc { padding: 48px 0 80px; }
.doc h1 { font-size: 36px; font-weight: 800; margin-bottom: 8px; }
.doc .updated { color: var(--text-muted); font-size: 14px; margin-bottom: 36px; }
.doc h2 {
  font-size: 21px; font-weight: 700; margin: 34px 0 10px;
  padding-inline-start: 14px; border-inline-start: 4px solid var(--pink-deep);
}
.doc p { color: var(--text-secondary); font-size: 16px; margin-bottom: 8px; }
.intro {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 20px 24px; margin-bottom: 10px;
}
footer { border-top: 1px solid var(--border); padding: 28px 0; text-align: center; color: var(--text-muted); font-size: 13px; }
footer a { margin: 0 8px; }
@media (max-width: 520px) {
  .doc h1 { font-size: 28px; }
  .doc h2 { font-size: 18px; }
}