body {
  max-width: 700px;
  margin: auto;
  padding: 2em;
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #fefefe;
}

h1, h2 {
  font-weight: 600;
  line-height: 1.3;
}

h1 { margin-bottom: 0.2em; }
.tagline { color: #666; font-size: 1rem; margin-top: 0; }

a { color: #0645ad; text-decoration: none; }
a:hover { text-decoration: underline; }

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