/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Georgia, 'Times New Roman', serif;
    background: #b3b7f1;
    color: #000;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    line-height: 1.6;
  }
  
  /* Header */
  header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 3px solid #000;
    margin-bottom: 20px;
  }
  
  header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
  }
  
  .tagline {
    font-style: italic;
    font-size: 1.1em;
  }
  
  /* Navigation */
  nav {
    text-align: center;
    padding: 15px 0;
    background: #9a9ef0;
    border: 2px solid #000;
    margin-bottom: 30px;
    font-weight: bold;
  }
  
  nav a {
    color: #000;
    text-decoration: none;
    padding: 5px 10px;
  }
  
  nav a:hover {
    text-decoration: underline;
    color: #ff0000;
  }
  
  /* Main content */
  main {
    background: #fff;
    padding: 30px;
    border: 2px solid #000;
    box-shadow: 5px 5px 0px #000;
  }
  
  section {
    margin-bottom: 30px;
  }
  
  h2 {
    color: #000;
    border-bottom: 2px solid #000;
    padding-bottom: 5px;
    margin-bottom: 15px;
  }
  
  h3 {
    color: #333;
    margin-bottom: 10px;
  }
  
  /* Links */
  a {
    color: #0000ee;
    text-decoration: underline;
  }
  
  a:visited {
    color: #551a8b;
  }
  
  a:hover {
    color: #ff0000;
  }
  
  /* Lists */
  ul {
    margin-left: 20px;
    margin-top: 10px;
  }
  
  li {
    margin-bottom: 8px;
  }
  
  /* Blockquote */
  blockquote {
    background: #f0f0f0;
    border-left: 4px solid #000;
    padding: 15px;
    margin: 15px 0;
    font-style: italic;
  }
  
  /* Features section */
  .features ul {
    list-style-type: square;
  }
  
  /* Specs */
  .specs p {
    margin-bottom: 8px;
  }
  
  /* Footer */
  footer {
    margin-top: 30px;
    padding-top: 20px;
    text-align: center;
  }
  
  footer hr {
    border: none;
    border-top: 2px solid #000;
    margin-bottom: 15px;
  }
  
  /* Responsive */
  @media (max-width: 600px) {
    body {
      padding: 10px;
    }
    
    header h1 {
      font-size: 1.8em;
    }
    
    main {
      padding: 15px;
    }
  }