:root {
  color-scheme: light dark;
  --bg: #fbfaf8;
  --text: #1d1c1a;
  --muted: #5b5a56;
  --line: #e2dfd9;
  --accent: #2a52d4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161715;
    --text: #ecebe6;
    --muted: #a4a29b;
    --line: #2d2e2a;
    --accent: #8fa8ff;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 'Segoe UI Variable Text', 'Segoe UI', system-ui, -apple-system, sans-serif;
}
main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}
header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
header img {
  width: 48px;
  height: 48px;
}
h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.015em;
  line-height: 1.2;
}
h2 {
  margin: 2.2rem 0 0.4rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.muted {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}
a {
  color: var(--accent);
}
ul {
  padding-left: 1.2rem;
}
nav {
  display: flex;
  gap: 1.25rem;
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}