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

body {
  background-color: #f8fbfd;
  color: #222;
  line-height: 1.6;
}

header {
  background: linear-gradient(90deg, #ff9933, #ff9900);
  color: #fff;
  text-align: center;
  padding: 2rem 1rem;
  box-shadow: 0 3px 8px rgba(0,0,0,0.08);
}

header h1 {
  font-size: 1.9rem;
  margin-bottom: 0.4rem;
}

header p {
  font-size: 1rem;
  opacity: 0.95;
}

main {
  max-width: 1000px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

section {
  background: #ffffff;
  border-radius: 10px;
  padding: 1.1rem;
  margin-bottom: 1.2rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

section h2 {
  color: #fd7a0f;
  margin-bottom: 0.6rem;
  font-size: 1.25rem;
}

ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.5rem;
}

.imagen-redonda {
  display: block;
  margin: 1rem auto;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #df7e24;
  box-shadow: 0 6px 18px rgba(3, 37, 65, 0.06);
}

video {
  display: block;
  margin: 0.8rem auto;
  width: 100%;
  max-width: 640px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

iframe {
  display: block;
  margin: 20px auto;
  max-width: 100%;
  border-radius: 10px;
}

.articulo p {
  text-align: justify;
  white-space: pre-wrap;
}

footer {
  background: #ffa500;
  color: #fff;
  text-align: center;
  padding: 1rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  box-shadow: 0 -2px 6px rgba(0,0,0,0.03);
}

@media (max-width: 768px) {
  header h1 {
    font-size: 1.6rem;
  }

  .imagen-redonda {
    width: 140px;
    height: 140px;
  }

  section {
    padding: 0.9rem;
  }
}

@media (max-width: 480px) {
  header {
    padding: 1.2rem 0.6rem;
  }

  header h1 {
    font-size: 1.4rem;
  }

  header p {
    font-size: 0.95rem;
  }

  .imagen-redonda {
    width: 120px;
    height: 120px;
  }

  main {
    padding: 0 0.8rem;
  }

  section h2 {
    font-size: 1.05rem;
  }
}