* { box-sizing: border-box; }

body {
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem;
  color: #1a1a1a;
}

header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #e0e0e0;
}

h1 { font-size: 1.75rem; font-weight: 700; margin: 0 0 0.25rem 0; }

.tagline { margin: 0; color: #555; font-size: 1rem; }

main section { margin-bottom: 2rem; }

h2 { font-size: 1.1rem; font-weight: 600; margin: 0 0 0.5rem 0; }

a { color: #0a5; text-decoration: none; }
a:hover { text-decoration: underline; }

.links { list-style: none; padding: 0; margin: 0; }
.links li { margin-bottom: 0.5rem; }

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid #e0e0e0;
  font-size: 0.9rem;
  color: #666;
}