:root {
  color-scheme: light dark;
}
body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  max-width: 720px;
  margin: 60px auto;
  padding: 0 20px 60px;
  line-height: 1.65;
  color: #1a1a1a;
  background: #ffffff;
}
h1 {
  margin-bottom: 4px;
}
h2 {
  margin-top: 28px;
  font-size: 1.1rem;
}
a {
  color: #5b4bd6;
}
.muted {
  color: #666;
}
nav {
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid #ececf2;
  font-size: 0.9rem;
}
nav a {
  margin-right: 14px;
}
@media (prefers-color-scheme: dark) {
  body {
    color: #e8e8ee;
    background: #0f0f14;
  }
  a {
    color: #a78bfa;
  }
  .muted {
    color: #9a9aa6;
  }
  nav {
    border-color: #2a2a35;
  }
}