body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(135deg, #012b3a, #044a68);
      color: white;
      margin: 0;
      padding: 0;
      line-height: 1.7;
      margin-top: 5rem;
      
    }

    .container {
      max-width: 1000px;
      margin: 0 auto;
      padding: 3rem 1rem;
    }

    h1 {
      text-align: center;

      margin-bottom: 1rem;
      margin-top: 3rem;
      line-height: 3rem;
      color: #ffffff;
    }

    .intro {
      text-align: center;
      margin-bottom: 2rem;
      color: #d0d0d0;
    }

    /* --- Video responsivo --- */
    .video-container {
      position: relative;
      padding-bottom: 56.25%; /* relación 16:9 */
      height: 0;
      overflow: hidden;
      border-radius: 20px;
      margin-bottom: 3rem;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .video-container iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      border: 0;
      border-radius: 20px;
    }

    .section {
      background: rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      padding: 2rem;
      margin-bottom: 2rem;
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      transition: transform 0.3s;
      color: white;
    }

    .section:hover {
      transform: translateY(-4px);
    }
    
    .container p{
        text-decoration: none;
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
        color: #e0e0e0;
    }

    .section h2 {
      font-size: 1.8rem;
      margin-bottom: 1rem;
      color: #ffcc70;
    }

    .section ul {
      list-style: none;
      padding: 0;
      color: white;
    }

    .section ul li {
      margin-bottom: 0.8rem;
      padding-left: 1.5rem;
      position: relative;
      color: white;
    }

    .section ul li::before {
      content: "✔";
      color: #ff3366;
      position: absolute;
      left: 0;
    }

    .highlight {
      font-weight: bold;
      color: #ffcc70;
    }

    .back-btn {
      display: inline-block;
      margin-top: 2rem;
      padding: 0.8rem 1.5rem;
      background: #ff3366;
      color: white;
      border-radius: 10px;
      text-decoration: none;
      transition: background 0.3s;
    }

    .back-btn:hover {
      background: #ff0044;
    }

    /* Responsive mejorado */
@media (max-width: 1024px) {
  .container {
    padding: 2rem 1rem;
  }

  h1 {
    font-size: 2.4rem;
  }

  .intro {
    font-size: 1.1rem;
  }

  .section h2 {
    font-size: 1.6rem;
  }

  ul li {
    font-size: 1rem;
    padding-left: 1.2rem;
  }

  .back-btn {
    padding: 0.7rem 1.3rem;
    font-size: 0.95rem;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  .intro {
    font-size: 1rem;
  }

  .section {
    padding: 1.5rem;
  }

  .section h2 {
    font-size: 1.4rem;
  }

  ul li {
    font-size: 0.95rem;
    padding-left: 1rem;
  }

  .back-btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  body {
    line-height: 1.6;
  }

  h1 {
    font-size: 1.8rem;
  }

  .intro {
    font-size: 0.95rem;
  }

  .section {
    padding: 1rem;
  }

  .section h2 {
    font-size: 1.2rem;
  }

  ul li {
    font-size: 0.9rem;
    padding-left: 0.8rem;
  }

  .back-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}