body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #f8fafc;
  color: #1e293b;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 20px 60px;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
  font-weight: bold;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #333;
}

.section {
  padding: 80px 60px;
  max-width: 1100px;
  margin: auto;
}

.hero {
  text-align: center;
  padding: 100px 20px;
  background: linear-gradient(135deg, #1e90ff, #00c6ff);
  color: white;
}

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

.card {
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

footer {
  background: #0f172a;
  color: white;
  text-align: center;
  padding: 20px;
}