* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  line-height: 1.6;
  color: #333;
}

.navbar {
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: #1e293b;
  color: white;
}

.navbar a {
  color: white;
  margin-left: 1rem;
  text-decoration: none;
}

.hero {
  background: linear-gradient(120deg, #2563eb, #1e40af);
  color: white;
  padding: 5rem 2rem;
  text-align: center;
}

.hero button {
  margin-top: 1rem;
  padding: 0.8rem 1.5rem;
  border: none;
  background: white;
  color: #1e40af;
  cursor: pointer;
  font-weight: bold;
}

.section {
  padding: 4rem 2rem;
  text-align: center;
}

.section.alt {
  background: #f1f5f9;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  padding-bottom: 1rem;
}

.card img {
  width: 100%;
  border-radius: 8px 8px 0 0;
}

.card h3 {
  margin: 1rem 0 0.5rem;
}

.center {
  max-width: 600px;
  margin: auto;
}

.secondary {
  margin-top: 1rem;
  padding: 0.7rem 1.3rem;
  background: #2563eb;
  color: white;
  border: none;
  cursor: pointer;
}

.cta {
  background: #1e293b;
  color: white;
  padding: 3rem 2rem;
  text-align: center;
}

footer {
  background: #0f172a;
  color: white;
  text-align: center;
  padding: 1rem;
}