/* CODIGO CSS DE LA TERC. EDICION */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', sans-serif;
  line-height: 1.7;
  background-color: #fefefe;
  color: #1a1a1a;
  padding: 2rem 1rem;
  max-width: 800px;
  margin: auto;
}

h1, h2, h3, h4 {
  font-family: 'Georgia', serif;
  color: #111;
  margin-top: 2rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

h1 {
  font-size: 2.25rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 2px solid #ccc;
  padding-bottom: 0.5rem;
}

h2 {
  font-size: 1.75rem;
  color: #222;
}

h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-top: 1.5rem;
}

h4 {
  font-size: 1.1rem;
  font-weight: 500;
}

p {
  margin-bottom: 1.25rem;
}

ul, ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

strong {
  font-weight: 700;
}

em {
  font-style: italic;
}

a {
  color: #0047ab;
  text-decoration: underline;
}

a:hover {
  color: #002d72;
}

blockquote {
  border-left: 4px solid #ccc;
  padding-left: 1rem;
  margin: 1rem 0;
  color: #555;
  font-style: italic;
  background-color: #f9f9f9;
}

code {
  font-family: monospace;
  background-color: #f4f4f4;
  padding: 0.2em 0.4em;
  border-radius: 4px;
}

pre code {
  display: block;
  padding: 1rem;
  background-color: #272822;
  color: #f8f8f2;
  overflow-x: auto;
  border-radius: 6px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

th, td {
  border: 1px solid #ddd;
  padding: 0.75rem;
  text-align: left;
}

th {
  background-color: #f0f0f0;
  font-weight: bold;
}

.note, .important {
  padding: 1rem;
  border-left: 5px solid #0077cc;
  background-color: #eef6fc;
  margin: 1.5rem 0;
  color: #003355;
  font-size: 0.95rem;
}

hr {
  margin: 3rem 0;
  border: none;
  border-top: 1px solid #ccc;
}

@media (max-width: 600px) {
  body {
    padding: 1.5rem 1rem;
    font-size: 15px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  h3 {
    font-size: 1.2rem;
  }
}