/* CSS cho trang vn888 */
    .page-vn888 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #f5f7fa;
      padding: 20px 0;
    }

    .page-vn888 .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-vn888 h1,
    .page-vn888 h2,
    .page-vn888 h3 {
      color: #2c3e50;
      margin-bottom: 15px;
      line-height: 1.3;
    }

    .page-vn888 h1 {
      font-size: 2.8em;
      text-align: center;
      margin-bottom: 30px;
      color: #007bff; /* Primary blue for main heading */
    }

    .page-vn888 h2 {
      font-size: 2.2em;
      border-bottom: 2px solid #ddd;
      padding-bottom: 10px;
      margin-top: 40px;
      margin-bottom: 25px;
      color: #007bff;
    }

    .page-vn888 h3 {
      font-size: 1.8em;
      color: #4a69bd; /* Secondary blue */
      margin-top: 30px;
      margin-bottom: 15px;
    }

    .page-vn888 p {
      margin-bottom: 15px;
      font-size: 1.05em;
    }

    .page-vn888 .section-hero {
      background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
      color: #fff;
      padding: 60px 0;
      text-align: center;
      margin-bottom: 40px;
      border-radius: 10px;
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    }

    .page-vn888 .section-hero p {
      font-size: 1.3em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-vn888 .btn {
      display: inline-block;
      background-color: #ffc107; /* Gold/yellow accent */
      color: #333;
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1.1em;
      margin: 10px;
    }

    .page-vn888 .btn:hover {
      background-color: #e0a800;
      transform: translateY(-2px);
      color: #000;
    }

    .page-vn888 .btn-primary {
      background-color: #28a745; /* Green for primary action */
      color: #fff;
    }

    .page-vn888 .btn-primary:hover {
      background-color: #218838;
      color: #fff;
    }

    .page-vn888 .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
      margin-bottom: 40px;
    }

    .page-vn888 .card {
      background-color: #fff;
      border-radius: 10px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      padding: 25px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-vn888 .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    }

    .page-vn888 .card img {
      max-width: 100%;
      height: 150px;
      object-fit: cover;
      border-radius: 8px;
      margin-bottom: 15px;
    }

    .page-vn888 .card h4 {
      font-size: 1.4em;
      color: #007bff;
      margin-bottom: 10px;
    }

    .page-vn888 .card p {
      font-size: 0.95em;
      color: #555;
    }

    .page-vn888 .card .btn {
      margin-top: 15px;
      font-size: 0.9em;
      padding: 8px 18px;
    }

    .page-vn888 .feature-list {
      list-style: none;
      padding: 0;
    }

    .page-vn888 .feature-list li {
      background-color: #e9ecef;
      margin-bottom: 10px;
      padding: 15px 20px;
      border-left: 5px solid #007bff;
      border-radius: 5px;
      font-size: 1.1em;
      color: #333;
    }

    .page-vn888 .guide-steps {
      counter-reset: step-counter;
      list-style: none;
      padding: 0;
    }

    .page-vn888 .guide-steps li {
      margin-bottom: 20px;
      padding-left: 50px;
      position: relative;
      font-size: 1.1em;
    }

    .page-vn888 .guide-steps li::before {
      content: counter(step-counter);
      counter-increment: step-counter;
      position: absolute;
      left: 0;
      top: 0;
      background-color: #007bff;
      color: #fff;
      width: 35px;
      height: 35px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.2em;
    }

    .page-vn888 .cta-banner {
      background: linear-gradient(45deg, #28a745 0%, #218838 100%);
      color: #fff;
      padding: 40px 20px;
      text-align: center;
      border-radius: 10px;
      margin-top: 40px;
      margin-bottom: 40px;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    }

    .page-vn888 .cta-banner h2 {
      color: #fff;
      font-size: 2.5em;
      margin-bottom: 20px;
      border-bottom: none;
    }

    .page-vn888 .cta-banner p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-vn888 .faq-item {
      background-color: #fff;
      border: 1px solid #ddd;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
    }

    .page-vn888 .faq-question {
      padding: 18px 25px;
      background-color: #e9ecef;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: bold;
      color: #333;
      font-size: 1.1em;
    }

    .page-vn888 .faq-question:hover {
      background-color: #dee2e6;
    }

    .page-vn888 .faq-answer {
      padding: 15px 25px;
      background-color: #fcfdff;
      border-top: 1px solid #eee;
      display: none;
      color: #555;
    }

    .page-vn888 .faq-answer.active {
      display: block;
    }

    .page-vn888 .faq-question .icon {
      font-size: 1.2em;
      transition: transform 0.3s ease;
    }

    .page-vn888 .faq-question.active .icon {
      transform: rotate(180deg);
    }

    /* Floating Ad Menu */
    .page-vn888 .floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #dc3545; /* Red accent for urgency */
      color: #fff;
      padding: 15px 20px;
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      text-align: center;
      z-index: 1000;
      font-weight: bold;
      font-size: 1.1em;
      animation: pulse 2s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-vn888 .floating-ad a {
      color: #fff;
      text-decoration: none;
    }

    .page-vn888 .floating-ad:hover {
      background-color: #c82333;
      transform: scale(1.05);
      animation: none;
    }

    @keyframes pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-vn888 h1 {
        font-size: 2.2em;
      }
      .page-vn888 h2 {
        font-size: 1.8em;
      }
      .page-vn888 h3 {
        font-size: 1.5em;
      }
      .page-vn888 .section-hero {
        padding: 40px 0;
      }
      .page-vn888 .section-hero p {
        font-size: 1.1em;
      }
      .page-vn888 .card-grid {
        grid-template-columns: 1fr;
      }
      .page-vn888 .cta-banner h2 {
        font-size: 2em;
      }
      .page-vn888 .cta-banner p {
        font-size: 1em;
      }
      .page-vn888 .floating-ad {
        bottom: 15px;
        right: 15px;
        padding: 12px 18px;
        font-size: 1em;
      }
    }