body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', sans-serif;
  background-color: #fff;
  color: #222;
}

header, main, footer {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  text-align: center;
}

img {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, p {
  margin: 15px 0;
}

button, .cta {
  font-size: 18px;
  padding: 15px 25px;
  border: none;
  border-radius: 8px;
  background-color: #0033cc;
  color: white;
  font-weight: bold;
  cursor: pointer;
  margin-top: 20px;
  width: 90%;
  max-width: 350px;
}

.cta span {
  display: block;
  font-size: 22px;
  color: yellow;
  margin-top: 5px;
}

.section {
  padding: 20px 10px;
}

.numeros {
  font-size: 18px;
  line-height: 1.6;
  letter-spacing: 1px;
}

@media (max-width: 480px) {
  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
  p { font-size: 16px; }
  button, .cta {
    font-size: 16px;
    padding: 12px 18px;
  }
}
