body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #001f3f;
  color: white;
  padding: 15px 40px;
  position: sticky;
  top: 0;
}

.nav-links {
  list-style: none;
  display: flex;
}

.nav-links li {
  margin-left: 25px;
}

.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 500;
}

/* Hero */
#hero {
  background: linear-gradient(to right, #003366, #00509e);
  color: white;
  text-align: center;
  padding: 120px 20px;
}

.btn {
  background: white;
  color: #003366;
  padding: 12px 25px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

/* Sections */
section {
  padding: 70px 20px;
  text-align: center;
}

/* Cards */
.cards {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.card {
  background: #f5f7fa;
  margin: 15px;
  padding: 25px;
  width: 260px;
  border-radius: 10px;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

/* Footer */
footer {
  background: #001f3f;
  color: white;
  text-align: center;
  padding: 20px;
}