body {
  font-family: 'Arial', sans-serif;
  background: #f8f8f8;
  margin: 0;
  padding: 0;
  color: #333;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

header {
  background: #2c3e50;
  color: #fff;
  text-align: center;
  padding: 40px 20px;
}

header h1 {
  font-size: 2em;
  margin-bottom: 10px;
}

header p {
  margin-bottom: 20px;
}

.cta-button {
  background: #e67e22;
  color: #fff;
  padding: 12px 25px;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
}

.main-nav {
  background: #34495e;
}

.main-nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0;
  padding: 10px;
}

.main-nav a {
  color: #fff;
  padding: 10px 15px;
  text-decoration: none;
}

.main-nav a:hover {
  background: #2c3e50;
  border-radius: 3px;
}

main h2 {
  color: #2c3e50;
  margin-top: 20px;
}

article {
  margin-bottom: 20px;
}

ul {
  padding-left: 20px;
}

footer {
  text-align: center;
  background: #2c3e50;
  color: #fff;
  padding: 15px;
  margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
  header h1 {
    font-size: 1.5em;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: center;
  }

  .main-nav a {
    padding: 10px;
  }
}