:root {
  --green: #5a9c3f;
  --brown: #4a3527;
  --white: #ffffff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--brown);
  background: var(--white);
  line-height: 1.6;
}
header {
  background: var(--brown);
  color: var(--white);
  padding: 2.5rem 1.5rem;
  text-align: center;
}
header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.25rem;
  letter-spacing: 0.02em;
}
header p {
  margin: 0;
  color: var(--white);
  opacity: 0.85;
  font-size: 1.1rem;
}
nav {
  background: var(--green);
  text-align: center;
  padding: 0.75rem 0;
}
nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  margin: 0 1rem;
}
nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem 1.5rem;
}
h2 {
  color: var(--green);
  border-bottom: 3px solid var(--green);
  padding-bottom: 0.3rem;
  margin-top: 2.5rem;
}
h2:first-of-type {
  margin-top: 0;
}
.updated {
  color: #7a7168;
  font-size: 0.9rem;
  margin-top: -0.5rem;
}
ul {
  padding-left: 1.25rem;
}
footer {
  background: var(--brown);
  color: var(--white);
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
}
footer a {
  color: var(--green);
}