:root {
      --page-b52clubapk-primary-color: #007bff; /* Xanh dương */
      --page-b52clubapk-secondary-color: #6c757d; /* Xám */
      --page-b52clubapk-accent-color: #ffc107; /* Vàng */
      --page-b52clubapk-text-color: #343a40; /* Đen xám */
      --page-b52clubapk-background-color: #f8f9fa; /* Trắng xám */
      --page-b52clubapk-light-gray: #e9ecef;
      --page-b52clubapk-white: #ffffff;
      --page-b52clubapk-dark-blue: #0056b3;
      --page-b52clubapk-green: #28a745;
      --page-b52clubapk-dark-green: #218838;
    }

    .page-b52clubapk {
      font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
      line-height: 1.6;
      color: var(--page-b52clubapk-text-color);
      background-color: var(--page-b52clubapk-background-color);
      padding: 20px 0;
    }

    .page-b52clubapk-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-b52clubapk-section {
      background-color: var(--page-b52clubapk-white);
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      margin-bottom: 30px;
      padding: 30px;
    }

    .page-b52clubapk-hero {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, var(--page-b52clubapk-primary-color) 0%, var(--page-b52clubapk-dark-blue) 100%);
      color: var(--page-b52clubapk-white);
      border-radius: 8px;
      margin-bottom: 30px;
    }

    .page-b52clubapk-hero h1 {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-b52clubapk-white);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-b52clubapk-hero p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-b52clubapk-btn {
      display: inline-block;
      background-color: var(--page-b52clubapk-accent-color);
      color: var(--page-b52clubapk-dark-blue);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-b52clubapk-btn:hover {
      background-color: #ffda6a;
      transform: translateY(-2px);
      color: var(--page-b52clubapk-dark-blue);
    }

    .page-b52clubapk h2 {
      color: var(--page-b52clubapk-primary-color);
      font-size: 2em;
      margin-bottom: 25px;
      border-bottom: 3px solid var(--page-b52clubapk-accent-color);
      padding-bottom: 10px;
      text-align: center;
    }

    .page-b52clubapk h3 {
      color: var(--page-b52clubapk-dark-blue);
      font-size: 1.5em;
      margin-top: 25px;
      margin-bottom: 15px;
    }

    .page-b52clubapk p {
      margin-bottom: 15px;
      color: var(--page-b52clubapk-text-color);
    }

    .page-b52clubapk ul {
      list-style-type: disc;
      padding-left: 25px;
      margin-bottom: 15px;
    }

    .page-b52clubapk ol {
      list-style-type: decimal;
      padding-left: 25px;
      margin-bottom: 15px;
    }

    .page-b52clubapk li {
      margin-bottom: 8px;
      color: var(--page-b52clubapk-text-color);
    }

    .page-b52clubapk-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 20px;
    }

    .page-b52clubapk-card {
      background-color: var(--page-b52clubapk-light-gray);
      border-radius: 8px;
      padding: 25px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-b52clubapk-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    }

    .page-b52clubapk-card img {
      max-width: 100px;
      height: auto;
      margin-bottom: 15px;
    }

    .page-b52clubapk-card h4 {
      color: var(--page-b52clubapk-primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-b52clubapk-cta-banner {
      background-color: var(--page-b52clubapk-green);
      color: var(--page-b52clubapk-white);
      text-align: center;
      padding: 40px 20px;
      border-radius: 8px;
      margin-top: 30px;
      margin-bottom: 30px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .page-b52clubapk-cta-banner h3 {
      color: var(--page-b52clubapk-white);
      font-size: 2em;
      margin-bottom: 20px;
    }

    .page-b52clubapk-cta-banner .page-b52clubapk-btn {
      background-color: var(--page-b52clubapk-accent-color);
      color: var(--page-b52clubapk-dark-blue);
    }

    .page-b52clubapk-cta-banner .page-b52clubapk-btn:hover {
      background-color: #ffda6a;
      color: var(--page-b52clubapk-dark-blue);
    }

    .page-b52clubapk-faq-item {
      margin-bottom: 20px;
      border-bottom: 1px solid var(--page-b52clubapk-light-gray);
      padding-bottom: 15px;
    }

    .page-b52clubapk-faq-item h4 {
      color: var(--page-b52clubapk-dark-blue);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.2em;
      margin-bottom: 0;
    }

    .page-b52clubapk-faq-item h4::after {
      content: '+';
      font-size: 1.5em;
      transition: transform 0.3s ease;
    }

    .page-b52clubapk-faq-item.active h4::after {
      content: '-';
      transform: rotate(180deg);
    }

    .page-b52clubapk-faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.5s ease-out;
      padding-top: 0;
      color: var(--page-b52clubapk-text-color);
    }

    .page-b52clubapk-faq-item.active .page-b52clubapk-faq-content {
      max-height: 200px; /* Adjust as needed */
      padding-top: 15px;
    }

    .page-b52clubapk-floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-b52clubapk-accent-color);
      color: var(--page-b52clubapk-dark-blue);
      padding: 15px 20px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 15px;
    }

    .page-b52clubapk-floating-ad p {
      margin: 0;
      font-weight: bold;
      font-size: 1.1em;
      color: var(--page-b52clubapk-dark-blue);
    }

    .page-b52clubapk-floating-ad .page-b52clubapk-btn {
      padding: 10px 20px;
      font-size: 1em;
      background-color: var(--page-b52clubapk-primary-color);
      color: var(--page-b52clubapk-white);
    }

    .page-b52clubapk-floating-ad .page-b52clubapk-btn:hover {
      background-color: var(--page-b52clubapk-dark-blue);
      color: var(--page-b52clubapk-white);
    }

    @media (max-width: 768px) {
      .page-b52clubapk-hero h1 {
        font-size: 2em;
      }
      .page-b52clubapk-hero p {
        font-size: 1em;
      }
      .page-b52clubapk-btn {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-b52clubapk h2 {
        font-size: 1.8em;
      }
      .page-b52clubapk h3 {
        font-size: 1.3em;
      }
      .page-b52clubapk-section {
        padding: 20px;
      }
      .page-b52clubapk-floating-ad {
        flex-direction: column;
        bottom: 10px;
        right: 10px;
        left: 10px;
        width: auto;
        padding: 10px 15px;
        text-align: center;
      }
      .page-b52clubapk-floating-ad p {
        font-size: 0.9em;
      }
      .page-b52clubapk-floating-ad .page-b52clubapk-btn {
        width: 100%;
      }
    }