body {
  margin: 0;
  font-family: system-ui, Arial, sans-serif;
  background: #f7f9fb;
  color: #222;
}

.hero {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(135deg, #0f766e, #115e59);
  color: #fff;
}

.hero .btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: #22c55e;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
}

section {
  padding: 60px 20px;
  max-width: 900px;
  margin: auto;
}

footer {
  text-align: center;
  padding: 20px;
  background: #0f172a;
  color: #cbd5f5;
}