body {
  margin: 0;
  background: #f7f8f7;
  color: #171917;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 40px;
}

a {
  color: #16883a;
  font-weight: 600;
  text-decoration: none;
}

nav a {
  background: white;
  border: 1px solid #dce4dc;
  border-radius: 8px;
  padding: 9px 12px;
}

a:hover {
  text-decoration: underline;
}

h1 {
  font-size: clamp(34px, 7vw, 58px);
  line-height: 1;
  margin: 0 0 14px;
}

h2 {
  margin-top: 34px;
}

.card {
  background: white;
  border: 1px solid #e4e7e4;
  border-radius: 8px;
  padding: 24px;
}

.muted {
  color: #646a64;
}

.notice {
  background: #eaf8ee;
  border: 1px solid #c7ebd0;
  border-radius: 8px;
  padding: 16px;
}

footer {
  margin-top: 48px;
  border-top: 1px solid #e4e7e4;
  padding-top: 18px;
  color: #6b706b;
  font-size: 14px;
}