/* CSS dành riêng cho trang hi8823 com */
    .page-hi8823 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #f8f9fa;
      padding: 20px 0;
    }

    .page-hi8823-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-hi8823-section {
      background-color: #ffffff;
      padding: 30px;
      margin-bottom: 25px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

    .page-hi8823 h1, .page-hi8823 h2, .page-hi8823 h3 {
      color: #0056b3; /* Darker blue for headings */
      margin-bottom: 15px;
      line-height: 1.3;
    }

    .page-hi8823 h1 {
      font-size: 2.5em;
      text-align: center;
      margin-bottom: 30px;
      color: #007bff; /* Primary blue for H1 */
    }

    .page-hi8823 h2 {
      font-size: 2em;
      border-bottom: 2px solid #e9ecef;
      padding-bottom: 10px;
      margin-top: 30px;
    }

    .page-hi8823 h3 {
      font-size: 1.5em;
      color: #007bff;
      margin-top: 20px;
    }

    .page-hi8823 p {
      margin-bottom: 15px;
    }

    .page-hi8823 ul {
      list-style-type: disc;
      margin-left: 20px;
      margin-bottom: 15px;
    }

    .page-hi8823 ol {
      list-style-type: decimal;
      margin-left: 20px;
      margin-bottom: 15px;
    }

    .page-hi8823 li {
      margin-bottom: 8px;
    }

    .page-hi8823-button {
      display: inline-block;
      background-color: #007bff;
      color: #ffffff;
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      margin-top: 20px;
      text-align: center;
    }

    .page-hi8823-button:hover {
      background-color: #0056b3;
      color: #ffffff;
    }

    .page-hi8823-cta-banner {
      background-color: #e9f7ff;
      border: 1px solid #007bff;
      padding: 25px;
      border-radius: 8px;
      text-align: center;
      margin-top: 30px;
      margin-bottom: 30px;
    }

    .page-hi8823-cta-banner p {
      font-size: 1.2em;
      color: #0056b3;
      margin-bottom: 15px;
    }

    .page-hi8823-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-top: 20px;
    }

    .page-hi8823-card {
      background-color: #f1f7ff;
      border: 1px solid #d0e7ff;
      border-radius: 8px;
      padding: 20px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }

    .page-hi8823-card img {
      max-width: 100%;
      height: auto;
      border-radius: 5px;
      margin-bottom: 15px;
    }

    .page-hi8823-card h3 {
      margin-top: 0;
      color: #007bff;
      font-size: 1.3em;
    }

    .page-hi8823-card p {
      font-size: 0.95em;
      color: #555;
    }

    .page-hi8823-highlight {
      background-color: #fff3cd;
      border-left: 5px solid #ffc107;
      padding: 15px;
      margin: 20px 0;
      border-radius: 5px;
      color: #664d03;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-hi8823 h1 {
        font-size: 2em;
      }
      .page-hi8823 h2 {
        font-size: 1.7em;
      }
      .page-hi8823 h3 {
        font-size: 1.3em;
      }
      .page-hi8823-section {
        padding: 20px;
      }
    }

    @media (max-width: 480px) {
      .page-hi8823 h1 {
        font-size: 1.8em;
      }
      .page-hi8823 h2 {
        font-size: 1.5em;
      }
      .page-hi8823-button {
        width: 100%;
        padding: 10px 15px;
      }
    }

    /* Floating CTA */
    .page-hi8823-floating-cta {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #ffc107;
      color: #333;
      padding: 15px 20px;
      border-radius: 50px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
      text-decoration: none;
      font-weight: bold;
      z-index: 1000;
      transition: background-color 0.3s ease;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-hi8823-floating-cta:hover {
      background-color: #e0a800;
      color: #333;
    }

    .page-hi8823-floating-cta img {
      width: 24px;
      height: 24px;
    }