body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  color: #0f172a;
  background: #ffffff;
}

header {
  background: #0f172a;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 1rem;
  font-size: 0.9rem;
}

nav a:hover {
  text-decoration: underline;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 2rem;
}

section {
  padding: 2rem 0;
  border-bottom: 1px solid #e2e8f0;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.4rem;
  margin-top: 0;
}

ul {
  padding-left: 1.25rem;
}

p {
  line-height: 1.5;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: #0f766e;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 1rem;
}

.btn:hover {
  background: #0d5c56;
}

footer {
  margin-top: 2rem;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: #6b7280;
  border-top: 1px solid #e2e8f0;
}