/* Tổng thể */
    :root {
      --page-789club-primary-color: #007bff;
      --page-789club-secondary-color: #6c757d;
      --page-789club-accent-color: #ffc107;
      --page-789club-dark-bg: #1a1a1a;
      --page-789club-light-bg: #f8f9fa;
      --page-789club-text-color: #343a40;
      --page-789club-white: #ffffff;
      --page-789club-border-radius: 8px;
      --page-789club-transition: all 0.3s ease-in-out;
    }

    .page-789club {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--page-789club-text-color);
      background-color: var(--page-789club-light-bg);
      padding: 0;
      margin: 0;
    }

    .page-789club__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-789club__section {
      padding: 40px 0;
      margin-bottom: 20px;
      background-color: var(--page-789club-white);
      border-radius: var(--page-789club-border-radius);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

    .page-789club__section-title {
      font-size: 2.5em;
      color: var(--page-789club-primary-color);
      text-align: center;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 15px;
    }

    .page-789club__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-789club-accent-color);
      border-radius: 2px;
    }

    .page-789club__text-center {
      text-align: center;
    }

    /* Hero Section */
    .page-789club__hero-section {
      position: relative;
      background-color: var(--page-789club-dark-bg);
      color: var(--page-789club-white);
      text-align: center;
      padding: 60px 20px 40px; /* Adjusted padding-top for fixed header */
      overflow: hidden;
      border-radius: 0 0 var(--page-789club-border-radius) var(--page-789club-border-radius);
    }

    .page-789club__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.4;
      z-index: 0;
    }

    .page-789club__hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-789club__hero-title {
      font-size: 3em;
      margin-bottom: 15px;
      color: var(--page-789club-accent-color);
      line-height: 1.2;
    }

    .page-789club__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: var(--page-789club-white);
    }

    .page-789club__download-buttons {
      display: flex;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
    }

    .page-789club__download-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--page-789club-primary-color);
      color: var(--page-789club-white);
      padding: 15px 30px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      text-decoration: none;
      transition: var(--page-789club-transition);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-789club__download-button:hover {
      background-color: #0056b3;
      transform: translateY(-3px);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    }

    .page-789club__download-button svg {
      margin-right: 10px;
      width: 24px;
      height: 24px;
      fill: var(--page-789club-white);
    }
    
    /* Floating Login Button */
    .page-789club__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #dc3545; /* Red for urgency/promotion */
      color: var(--page-789club-white);
      padding: 15px 25px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      text-decoration: none;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      animation: page-789club__pulse 2s infinite;
      border: none;
      transition: var(--page-789club-transition);
    }

    .page-789club__floating-button:hover {
      background-color: #c82333;
      transform: scale(1.05);
    }

    @keyframes page-789club__pulse {
      0% {
        transform: scale(1);
      }
      50% {
        transform: scale(1.05);
      }
      100% {
        transform: scale(1);
      }
    }

    /* Overview Section */
    .page-789club__overview-content {
      display: flex;
      align-items: center;
      gap: 30px;
      padding: 0 20px;
      flex-wrap: wrap;
    }

    .page-789club__overview-text {
      flex: 1;
      min-width: 300px;
    }

    .page-789club__overview-image {
      flex: 1;
      min-width: 300px;
      text-align: center;
    }

    .page-789club__overview-image img {
      max-width: 100%;
      height: auto;
      border-radius: var(--page-789club-border-radius);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    /* Download Guide */
    .page-789club__guide-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      padding: 0 20px;
    }

    .page-789club__guide-item {
      background-color: var(--page-789club-light-bg);
      padding: 25px;
      border-radius: var(--page-789club-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      text-align: center;
      transition: var(--page-789club-transition);
      border: 1px solid #e0e0e0;
    }

    .page-789club__guide-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    .page-789club__guide-item h3 {
      font-size: 1.5em;
      color: var(--page-789club-primary-color);
      margin-bottom: 15px;
    }

    .page-789club__guide-item img {
      max-width: 100%;
      height: auto;
      border-radius: var(--page-789club-border-radius);
      margin-bottom: 20px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .page-789club__guide-item ol {
      text-align: left;
      margin-left: 20px;
      list-style-type: decimal;
      color: var(--page-789club-text-color);
    }

    .page-789club__guide-item ol li {
      margin-bottom: 10px;
    }

    .page-789club__guide-item .page-789club__download-button {
      margin-top: 20px;
      width: fit-content;
      font-size: 0.95em;
      padding: 10px 20px;
    }

    /* Featured Games */
    .page-789club__games-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      padding: 0 20px;
    }

    .page-789club__game-card {
      background-color: var(--page-789club-light-bg);
      border-radius: var(--page-789club-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      overflow: hidden;
      text-align: center;
      transition: var(--page-789club-transition);
      border: 1px solid #e0e0e0;
    }

    .page-789club__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    .page-789club__game-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-789club__game-card-content {
      padding: 20px;
    }

    .page-789club__game-card-content h3 {
      font-size: 1.3em;
      color: var(--page-789club-primary-color);
      margin-bottom: 10px;
    }

    .page-789club__game-card-content p {
      font-size: 0.95em;
      color: var(--page-789club-secondary-color);
      margin-bottom: 15px;
    }

    /* Advantages Section */
    .page-789club__advantages-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      padding: 0 20px;
    }

    .page-789club__advantage-item {
      background-color: var(--page-789club-light-bg);
      padding: 25px;
      border-radius: var(--page-789club-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      text-align: center;
      transition: var(--page-789club-transition);
      border: 1px solid #e0e0e0;
    }

    .page-789club__advantage-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    .page-789club__advantage-item img {
      width: 80px; /* Ensure images are >200x200px. This is just an example for sizing */
      height: 80px;
      object-fit: contain;
      margin-bottom: 15px;
    }

    .page-789club__advantage-item h3 {
      font-size: 1.4em;
      color: var(--page-789club-primary-color);
      margin-bottom: 10px;
    }

    .page-789club__advantage-item p {
      font-size: 0.95em;
      color: var(--page-789club-text-color);
    }

    /* FAQ Section */
    .page-789club__faq-list {
      max-width: 800px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .page-789club__faq-item {
      background-color: var(--page-789club-light-bg);
      border: 1px solid #ddd;
      border-radius: var(--page-789club-border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
    }

    .page-789club__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #e9ecef;
      color: var(--page-789club-text-color);
      cursor: pointer;
      font-weight: bold;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-789club__faq-question:hover {
      background-color: #dee2e6;
    }

    .page-789club__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-789club-primary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-789club__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-789club-primary-color);
      pointer-events: none; /* Prevent toggle from blocking click event */
      transition: transform 0.3s ease;
    }

    .page-789club__faq-item.active .page-789club__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' or similar effect */
    }
    
    .page-789club__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px; /* Initial padding */
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      background-color: var(--page-789club-white);
      color: var(--page-789club-text-color);
    }

    .page-789club__faq-item.active .page-789club__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to show all content */
      padding: 20px 15px !important; /* Expanded padding */
      opacity: 1;
    }

    /* Call to Action */
    .page-789club__cta-section {
      background-color: var(--page-789club-primary-color);
      color: var(--page-789club-white);
      text-align: center;
      padding: 50px 20px;
      border-radius: var(--page-789club-border-radius);
      margin-top: 40px;
    }

    .page-789club__cta-title {
      font-size: 2.2em;
      margin-bottom: 20px;
      color: var(--page-789club-accent-color);
    }

    .page-789club__cta-description {
      font-size: 1.1em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Responsive adjustments */
    @media (max-width: 992px) {
      .page-789club__hero-title {
        font-size: 2.5em;
      }
      .page-789club__section-title {
        font-size: 2em;
      }
      .page-789club__overview-content {
        flex-direction: column;
      }
    }

    @media (max-width: 768px) {
      .page-789club__hero-section {
        padding-top: 60px; /* Adjust padding-top for mobile fixed header */
      }
      .page-789club__hero-title {
        font-size: 2em;
      }
      .page-789club__hero-subtitle {
        font-size: 1em;
      }
      .page-789club__download-buttons {
        flex-direction: column;
        gap: 15px;
      }
      .page-789club__download-button {
        width: 100%;
        padding: 12px 20px;
      }
      .page-789club__section {
        padding: 30px 0;
      }
      .page-789club__section-title {
        font-size: 1.8em;
      }
      .page-789club__container {
        padding: 15px;
      }
      .page-789club__guide-steps,
      .page-789club__games-grid,
      .page-789club__advantages-grid {
        grid-template-columns: 1fr;
        padding: 0 15px;
      }
      .page-789club__game-card img {
        height: 180px;
      }
      .page-789club__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
      .page-789club__faq-question {
        padding: 12px 15px;
      }
      .page-789club__faq-question h3 {
        font-size: 1em;
      }
      .page-789club__faq-answer {
        padding: 0 10px; /* Initial padding */
      }
      .page-789club__faq-item.active .page-789club__faq-answer {
        padding: 15px 10px !important; /* Expanded padding */
      }
      .page-789club__cta-title {
        font-size: 1.8em;
      }
      .page-789club__cta-description {
        font-size: 0.95em;
      }

      /* Responsive image styles */
      .page-789club img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-789club__overview-image img,
      .page-789club__guide-item img,
      .page-789club__game-card img,
      .page-789club__advantage-item img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
    }

    @media (max-width: 480px) {
      .page-789club__hero-title {
        font-size: 1.8em;
      }
      .page-789club__section-title {
        font-size: 1.5em;
      }
      .page-789club__download-button {
        font-size: 0.9em;
        padding: 10px 15px;
      }
      .page-789club__floating-button {
        font-size: 0.9em;
        padding: 10px 15px;
      }
    }