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

body {
  background: #f5f5f5;
  color: #333;
}

/* Header */
.hero {
  background: linear-gradient(135deg, #000000, #444444);
  color: white;
  text-align: center;
  padding: 100px 20px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 15px;
}

.hero p {
  font-size: 1.2rem;
}

/* Grid de Landings */
.landings {
  padding: 60px 20px;
  text-align: center;
}

.landings h2 {
  font-size: 2rem;
  margin-bottom: 40px;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.card {
  background: white;
  border: 2px solid #333;
  border-radius: 10px;
  padding: 20px;
  width: 250px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  font-size: 0.95rem;
  margin-bottom: 15px;
}

.card .btn {
  display: inline-block;
  padding: 10px 15px;
  background: #333;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

.card .btn:hover {
  background: #555;
}

/* Footer */
footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 15px;
}

/* Responsive */
@media (max-width: 800px) {
  .cards {
    flex-direction: column;
    align-items: center;
  }

  .card {
    width: 80%;
  }
}