.butter-container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
  }

  .butter-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.07);
    padding: 30px;
    margin-bottom: 40px;
    transition: transform 0.2s ease;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }

  .butter-card:hover {
    transform: scale(1.01);
  }

  .butter-card h2 {
    color: #004e92;
    font-size: 1.6em;
    border-left: 5px solid #ffa500;
    padding-left: 12px;
    margin-bottom: 20px;
  }

  .butter-card h3 {
    color: #e85d04;
    margin-top: 15px;
    margin-bottom: 10px;
  }

  .butter-card p, .butter-card ul, .butter-card ol {
    margin-bottom: 15px;
    line-height: 1.5em;
    color: #333;
  }

  .butter-card ul, .butter-card ol {
    padding-left: 20px;
  }

  .butter-card ul li, .butter-card ol li {
    margin-bottom: 10px;
  }

  .butter-card strong {
    color: #e85d04;
  }

  .butter-card.references ul {
    list-style: none;
    padding-left: 0;
  }

  .butter-card.references ul li {
    margin-bottom: 8px;
    font-size: 0.9em;
    color: #555;
  }

  @media (max-width: 600px) {
    .butter-card {
      padding: 20px;
    }

    .butter-card h2 {
      font-size: 1.3em;
    }
  }

  .butter-heading-card {
    font-family: Arial, sans-serif;
    max-width: 900px;
    margin: 40px auto;
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
    padding: 40px 30px;
    text-align: center;
    border-left: 8px solid #ff6600;
    border-right: 8px solid #004e92;
  }

  .butter-heading-card h1 {
    font-size: 2.2em;
    font-weight: bold;
    color: #004e92;
    margin-bottom: 10px;
  }

  .butter-heading-card p {
    font-size: 1.2em;
    color: #e85d04;
    font-weight: bold;
    margin: 0;
  }

  @media (max-width: 600px) {
    .butter-heading-card {
      padding: 30px 20px;
      margin: 20px 15px;
    }

    .butter-heading-card h1 {
      font-size: 1.6em;
    }

    .butter-heading-card p {
      font-size: 1em;
    }
  }