* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2937;
  background: #f9fafb;
}

.hero {
  min-height: 80vh;
  background: linear-gradient(135deg, #0f172a, #1d4ed8);
  color: white;
  padding: 32px;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: bold;
}

.menu a {
  color: white;
  text-decoration: none;
  margin-left: 24px;
  font-weight: 500;
}

.hero-content {
  max-width: 900px;
  margin: 140px auto 0;
  text-align: center;
}

.hero-content h1 {
  font-size: 48px;
  margin-bottom: 24px;
}

.hero-content p {
  font-size: 20px;
  line-height: 1.6;
  margin-bottom: 32px;
}

.button {
  display: inline-block;
  background: white;
  color: #1d4ed8;
  padding: 14px 28px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: bold;
}

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 32px;
  text-align: center;
}

.section h2 {
  font-size: 36px;
  margin-bottom: 16px;
}

.section p {
  font-size: 18px;
  line-height: 1.6;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: left;
}

.card {
  background: white;
  padding: 32px;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.card h3 {
  font-size: 24px;
  margin-top: 0;
}

.contato {
  background: white;
  border-radius: 24px;
  margin-bottom: 48px;
}

footer {
  text-align: center;
  padding: 32px;
  background: #0f172a;
  color: white;
}

@media (max-width: 800px) {
  .navbar {
    flex-direction: column;
    gap: 20px;
  }

  .menu a {
    margin: 0 8px;
  }

  .hero-content {
    margin-top: 80px;
  }

  .hero-content h1 {
    font-size: 34px;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}