/* CSS cho trang 8ket 456 */
    .page-8ket456 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #f9f9f9;
      padding: 20px 0;
    }

    .page-8ket456-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-8ket456-hero {
      background: linear-gradient(135deg, #0056b3, #003d80); /* Dark blue gradient */
      color: #fff;
      padding: 60px 20px;
      text-align: center;
      border-radius: 8px;
      margin-bottom: 40px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-8ket456-hero h1 {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #fff; /* Ensure high contrast */
      font-weight: 700;
    }

    .page-8ket456-hero p {
      font-size: 1.2em;
      max-width: 800px;
      margin: 0 auto 30px;
      color: #e0e0e0; /* Slightly lighter for contrast */
    }

    .page-8ket456-button {
      display: inline-block;
      background-color: #ffc107; /* Bright yellow/gold */
      color: #333; /* Dark text for contrast */
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      border: none;
      cursor: pointer;
    }

    .page-8ket456-button:hover {
      background-color: #e0a800; /* Darker yellow on hover */
      transform: translateY(-2px);
    }

    .page-8ket456-section {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      margin-bottom: 30px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-8ket456-section h2 {
      color: #0056b3; /* Main brand blue */
      font-size: 2em;
      margin-bottom: 20px;
      border-bottom: 2px solid #eee;
      padding-bottom: 10px;
    }

    .page-8ket456-section h3 {
      color: #007bff; /* Lighter blue for subheadings */
      font-size: 1.5em;
      margin-top: 25px;
      margin-bottom: 15px;
    }

    .page-8ket456-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 20px;
    }

    .page-8ket456-card {
      background-color: #f0f8ff; /* Light blue background for cards */
      border: 1px solid #e0e0e0;
      border-radius: 8px;
      padding: 20px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .page-8ket456-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }

    .page-8ket456-card img {
      max-width: 100px;
      height: auto;
      margin-bottom: 15px;
    }

    .page-8ket456-card h4 {
      color: #0056b3;
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-8ket456-card p {
      font-size: 0.95em;
      color: #555;
    }

    .page-8ket456-list {
      list-style-type: disc;
      padding-left: 25px;
      margin-top: 15px;
      color: #444;
    }

    .page-8ket456-list li {
      margin-bottom: 10px;
    }

    .page-8ket456-list li strong {
      color: #0056b3;
    }

    .page-8ket456-faq-item {
      margin-bottom: 15px;
      border-bottom: 1px solid #eee;
      padding-bottom: 15px;
    }

    .page-8ket456-faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }

    .page-8ket456-faq-item h3 {
      color: #007bff;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 0;
      margin-bottom: 0;
    }

    .page-8ket456-faq-item h3 .page-8ket456-toggle-icon {
      font-size: 1.2em;
      transition: transform 0.3s ease;
    }

    .page-8ket456-faq-item h3.active .page-8ket456-toggle-icon {
      transform: rotate(180deg);
    }

    .page-8ket456-faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      padding-left: 10px;
      color: #666;
    }

    .page-8ket456-faq-answer.open {
      max-height: 200px; /* Adjust as needed */
      transition: max-height 0.5s ease-in;
    }

    .page-8ket456-cta-banner {
      background: linear-gradient(90deg, #ffc107, #ffa000); /* Yellow/orange gradient */
      color: #333;
      padding: 40px 20px;
      text-align: center;
      border-radius: 8px;
      margin-top: 40px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-8ket456-cta-banner h2 {
      color: #333;
      font-size: 2.2em;
      margin-bottom: 15px;
    }

    .page-8ket456-cta-banner p {
      font-size: 1.1em;
      margin-bottom: 30px;
    }

    .page-8ket456-floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #dc3545; /* Red for urgency/promotion */
      color: #fff;
      padding: 15px 20px;
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 10px;
      animation: page-8ket456-pulse 2s infinite;
    }

    .page-8ket456-floating-ad a {
      color: #fff;
      font-weight: bold;
      text-decoration: none;
    }

    .page-8ket456-floating-ad-close {
      background: none;
      border: none;
      color: #fff;
      font-size: 1.5em;
      cursor: pointer;
      line-height: 1;
      margin-left: 10px;
    }

    @keyframes page-8ket456-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.03); }
      100% { transform: scale(1); }
    }


    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-8ket456-hero h1 {
        font-size: 2em;
      }
      .page-8ket456-hero p {
        font-size: 1em;
      }
      .page-8ket456-section h2 {
        font-size: 1.8em;
      }
      .page-8ket456-grid {
        grid-template-columns: 1fr;
      }
      .page-8ket456-floating-ad {
        bottom: 10px;
        right: 10px;
        padding: 10px 15px;
        font-size: 0.9em;
      }
    }

    @media (max-width: 480px) {
      .page-8ket456-hero {
        padding: 40px 15px;
      }
      .page-8ket456-section {
        padding: 20px;
      }
      .page-8ket456-cta-banner {
        padding: 30px 15px;
      }
      .page-8ket456-cta-banner h2 {
        font-size: 1.8em;
      }
    }