:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #666666;
  --border: #e5e5e5;
  --link: #1a1a1a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111111;
    --text: #ededed;
    --muted: #9a9a9a;
    --border: #2a2a2a;
    --link: #ededed;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  border-bottom: 1px solid var(--border);
}

header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--text);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 20px;
  font-size: 15px;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--text);
}

main {
  padding: 48px 0 64px;
}

h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 20px;
  margin: 40px 0 8px;
}

h3 {
  font-size: 17px;
  margin: 24px 0 4px;
}

p,
ul {
  margin: 0 0 16px;
}

a {
  color: var(--link);
}

.muted {
  color: var(--muted);
}

.hero {
  padding-top: 64px;
  padding-bottom: 64px;
}

.hero p {
  font-size: 18px;
  color: var(--muted);
  max-width: 520px;
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  font-size: 14px;
  color: var(--muted);
}

footer a {
  color: var(--muted);
}