:root {
  --ink: #111;
  --muted: #555;
  --paper: #fff;
  --rule: #ddd;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f2f2;
    --muted: #a8a8a8;
    --paper: #111;
    --rule: #333;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.page {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 40px;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

nav { display: flex; flex-wrap: wrap; gap: 4px 20px; }

a { color: var(--ink); text-underline-offset: 3px; }

nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }

h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 21px; line-height: 1.3; margin: 40px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }

p, ul { margin: 0 0 16px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }

.lead { font-size: 20px; color: var(--muted); margin-bottom: 32px; }
.updated { color: var(--muted); font-size: 15px; margin-bottom: 32px; }

.hero { padding: 48px 0 24px; }
.hero h1 { font-size: 56px; margin-bottom: 16px; }

address { font-style: normal; margin-bottom: 16px; }

footer {
  margin-top: 64px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 15px;
}
footer a { color: var(--muted); }

@media (max-width: 480px) {
  h1 { font-size: 28px; }
  .hero h1 { font-size: 44px; }
}