:root {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #1a1a1a;
  background: #fff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-size: 1.125rem;
  line-height: 1.6;
}

.site-header, main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.site-header { border-bottom: 1px solid #d4d4d4; }
main { padding-top: 2rem; padding-bottom: 2rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 1rem; }
.lead { font-size: 1.25rem; color: #4a4a4a; }
nav ul { padding-left: 1.5rem; }
nav li { margin: 0.5rem 0; }
a { color: #0b4f8a; text-underline-offset: 0.15em; }
a:hover { color: #073761; }
a:focus-visible { outline: 3px solid #0b4f8a; outline-offset: 2px; }