body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background-color: #f4f6f8;
  color: #333;
}

header {
  background: #2c3e50;
  color: white;
  padding: 20px 0;
  text-align: center;
}

nav {
  background: #34495e;
  text-align: center;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 14px 20px;
  display: inline-block;
}

nav a:hover {
  background: #2c3e50;
}

.hero {
  padding: 60px 20px;
  text-align: center;
  background: white;
}

.hero h1 {
  margin-bottom: 10px;
  font-size: 2.5rem;
}

.hero p {
  max-width: 600px;
  margin: auto;
  color: #666;
}

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 40px 20px;
  gap: 20px;
}

.card {
  background: white;
  padding: 20px;
  width: 280px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.card h3 {
  margin-top: 0;
}

.card p {
  color: #666;
}

footer {
  background: #2c3e50;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .container {
    flex-direction: column;
    align-items: center;
  }
}