:root {
  --text: #1c1c1e;
  --muted: #6b7280;
  --accent: #0d9488;
  --background: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f2f7;
    --muted: #a1a1aa;
    --accent: #2dd4bf;
    --background: #000000;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

header a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  font-size: 20px;
}

nav { margin-top: 8px; }
nav a { color: var(--muted); margin-right: 16px; }

h1 { font-size: 32px; line-height: 1.2; margin: 32px 0 4px; }
h2 { color: var(--accent); font-size: 19px; margin: 32px 0 8px; }
.updated { color: var(--muted); margin: 0 0 16px; font-size: 15px; }
.intro { color: var(--muted); }
p { margin: 0 0 10px; }
p.bullet { padding-left: 18px; position: relative; }
p.bullet::before { content: "•"; position: absolute; left: 2px; color: var(--accent); }