/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: #f7f7f7;
  color: #333;
  padding: 20px;
}

header, main, footer {
  max-width: 960px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

header h1 {
  font-size: 2rem;
  color: #0a0a0a;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1rem;
  color: #555;
}

main img {
  max-width: 100%;
  height: auto;
  margin: 20px 0;
  border-radius: 8px;
}

section {
  background-color: #fff;
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 30px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

section h2 {
  font-size: 1.5rem;
  color: #0d47a1;
  margin-bottom: 15px;
}

section h3 {
  font-size: 1.2rem;
  margin-top: 15px;
  color: #1a237e;
}

section p,
section li {
  font-size: 1rem;
  color: #444;
  margin-bottom: 10px;
}

ul {
  list-style: disc;
  padding-left: 20px;
}

a {
  color: #1565c0;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.btn {
  display: inline-block;
  background-color: #0d47a1;
  color: #fff;
  padding: 12px 20px;
  margin: 10px 5px 0 0;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #1565c0;
}

footer {
  text-align: center;
  font-size: 0.9rem;
  color: #777;
  margin-top: 30px;
}

/* Responsividade */
@media (max-width: 768px) {
  header h1 {
    font-size: 1.5rem;
  }

  section {
    padding: 15px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}