body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #222;
  line-height: 1.6;
  background: #f4f4f4;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

header {
  background: #111;
  color: white;
  padding: 20px 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
}

.logo {
  margin: 0;
}

.hero {
  background: linear-gradient(to right, #0f172a, #1e293b);
  color: white;
  text-align: center;
  padding: 120px 20px;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background: #2563eb;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  margin-top: 15px;
}

.section {
  padding: 70px 20px;
  background: white;
}

.dark {
  background: #eaeaea;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.card {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.contact {
  text-align: center;
}

footer {
  background: #111;
  color: white;
  text-align: center;
  padding: 20px 0;
}