* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 0 20px;
}

.hero {
  background: linear-gradient(135deg, #0a2a43, #133b5c);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
}

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

.nav {
  background: #0a2a43;
}

.nav .container {
  display: flex;
  justify-content: center;
}

.nav a {
  color: #fff;
  text-decoration: none;
  padding: 15px 20px;
  font-weight: 500;
}

.nav a:hover {
  background: #133b5c;
}

.section {
  margin: 50px 0;
}

.section h2 {
  margin-bottom: 20px;
  color: #0a2a43;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.footer {
  background: #0a2a43;
  color: #fff;
  text-align: center;
  padding: 20px;
  margin-top: 60px;
}