:root {
  --bg: #0b1020;
  --card: #161f3d;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e8ecf8;
  --muted: #9aa5c4;
  --primary: #6d5efc;
  --primary-2: #22c1a6;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-2); }
.nav { border-bottom: 1px solid var(--line); }
.nav-inner, main, footer { width: min(820px, 92vw); margin: 0 auto; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 800; font-size: 19px; color: var(--text); text-decoration: none; display: flex; gap: 10px; align-items: center; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font-size: 15px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
main { padding: 48px 0 32px; }
h1 { font-size: clamp(30px, 4vw, 40px); line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 21px; margin: 36px 0 8px; }
p, li { color: #cdd4ea; }
.updated { color: var(--muted); font-size: 14px; margin-bottom: 32px; }
.box { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 22px; }
footer { padding: 28px 0 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }