* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  background: #f8f9fa;
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, #1b4332, #2d6a4f);
  color: #fff;
  padding: 3rem 1.5rem;
  text-align: center;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
}

header .tagline {
  margin-top: 0.5rem;
  font-size: 1.1rem;
  opacity: 0.9;
}

main {
  max-width: 720px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

main > p {
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.4rem;
  margin: 2rem 0 0.75rem;
  color: #1b4332;
}

h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
  color: #2d6a4f;
}

ul {
  margin: 0.5rem 0 1rem 1.5rem;
}

li {
  margin-bottom: 0.35rem;
}

a {
  color: #2d6a4f;
}

nav.links {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
}

nav.links a {
  padding: 0.6rem 1.2rem;
  background: #2d6a4f;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
}

nav.links a:hover {
  background: #1b4332;
}

section {
  margin-bottom: 1.5rem;
}

footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: #666;
  font-size: 0.9rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}