body {
  margin:0;
  font-family: Arial, sans-serif;
  color:#222;
}

header {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:15px 40px;
  background:#0b3d91;
  color:white;
}

.logo {
  font-weight:bold;
  font-size:20px;
}

nav a {
  margin:0 10px;
  color:white;
  text-decoration:none;
}

.actions .btn {
  margin-left:10px;
}

.hero {
  background:url('https://images.unsplash.com/photo-1512917774080-9991f1c4c750?auto=format&fit=crop&w=1600&q=80') center/cover;
  height:500px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.hero .overlay {
  background:rgba(0,0,0,0.5);
  color:white;
  padding:40px;
  text-align:center;
}

section {
  padding:60px 40px;
}

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

.card {
  background:white;
  padding:20px;
  border-radius:10px;
  box-shadow:0 5px 15px rgba(0,0,0,0.1);
}

.card img {
  width:100%;
  border-radius:10px;
}

.btn {
  padding:10px 15px;
  border-radius:5px;
  background:white;
  color:#0b3d91;
  text-decoration:none;
}

.btn.primary {
  background:#0b3d91;
  color:white;
}

.whatsapp-float {
  position:fixed;
  bottom:20px;
  right:20px;
  background:#25D366;
  color:white;
  padding:15px;
  border-radius:50px;
  text-decoration:none;
}

footer {
  text-align:center;
  padding:20px;
  background:#0b3d91;
  color:white;
}