:root {
  color-scheme: dark;
  --bg: #090b10;
  --card: #121621;
  --text: #f5f7fb;
  --muted: #aab2c0;
  --border: #252c39;
  --accent: #7db8ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}
.brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 {
  font-size: clamp(34px, 7vw, 52px);
  line-height: 1.08;
  margin: 10px 0 14px;
}
h2 {
  margin-top: 34px;
  font-size: 22px;
}
p, li { color: var(--muted); }
.card {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
}
a { color: var(--accent); }
nav {
  display: flex;
  gap: 18px;
  margin-top: 26px;
}
nav a { text-decoration: none; font-weight: 600; }
footer {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}