body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #e8f6ff;
  color: #003f66;
}

header {
  background: #0a6ebd;
  padding: 20px;
  text-align: center;
}

.logo {
  width: 180px;
  display: block;
  margin: 0 auto 20px;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
  font-weight: bold;
}

.hero {
  text-align: center;
  padding: 40px 20px;
  background: #bfe6ff;
}

.section {
  padding: 20px;
}

.card {
  background: white;
  padding: 20px;
  margin: 20px 0;
  border-radius: 14px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.1);
}

.price {
  font-size: 18px;
  margin: 10px 0 20px;
}

.btn {
  display: block;
  text-align: center;
  background: #0a6ebd;
  color: white;
  padding: 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: bold;
}

@media (min-width: 700px) {
  .section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .section h2 {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1100px) {
  .section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
}