body {
  margin: 0;
  font-family: Arial;
  background: #f6f8fc;
  color: #0f172a;
}

.nav {
  display: flex;
  justify-content: space-between;
  padding: 20px;
  background: white;
  border-bottom: 1px solid #eee;
}

.nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #0f172a;
}

.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg,#fff,#eef2ff);
}

.btn {
  display: inline-block;
  padding: 12px 18px;
  background: #10b981;
  color: white;
  border-radius: 8px;
  text-decoration: none;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: #666;
}