:root {
  color-scheme: dark;
  --bg: #0a0f1e;
  --card: #131c33;
  --text: #e9eef8;
  --muted: #a3adc4;
  --brand: #2aa6ff;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: radial-gradient(120% 60% at 50% 0%, #0d2a4a, var(--bg) 60%);
  color: var(--text);
  font:
    16px/1.6 system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}
header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
header img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}
header a {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  font-size: 20px;
}
section {
  background: var(--card);
  border: 1px solid #26345a;
  border-radius: 16px;
  padding: 20px;
  margin: 16px 0;
}
h1 {
  font-size: 28px;
  margin: 0 0 8px;
}
h2 {
  font-size: 20px;
  margin: 0 0 8px;
}
h3 {
  font-size: 16px;
  margin: 16px 0 4px;
}
p,
li {
  color: var(--muted);
}
a {
  color: var(--brand);
}
.lang {
  font-size: 14px;
  color: var(--muted);
}