/* Tổng quan */
    .page-88k {
      font-family: 'Arial', sans-serif;
      background-color: #000000;
      color: #FFFFFF;
      line-height: 1.6;
      padding-bottom: 80px; /* Đảm bảo không bị nút nổi che */
    }

    .page-88k__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    /* Các phần chung */
    .page-88k__section {
      padding: 40px 0;
      text-align: center;
    }

    .page-88k__section-title {
      font-size: 2.5em;
      color: #FFD700;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .page-88k__section-subtitle {
      font-size: 1.2em;
      color: #FFF;
      margin-bottom: 40px;
    }

    .page-88k__button {
      display: inline-block;
      background-color: #FFD700;
      color: #000000;
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-88k__button:hover {
      background-color: #e6c200;
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-88k__hero-section {
      position: relative;
      text-align: center;
      padding-top: 10px; /* Fixed header safety padding for desktop */
      padding-bottom: 40px;
      overflow: hidden;
    }

    .page-88k__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin-bottom: 20px;
      border-radius: 8px;
    }

    .page-88k__hero-logo {
      max-width: 200px;
      height: auto;
      margin-bottom: 20px;
    }

    .page-88k__hero-title {
      font-size: 3.5em;
      color: #FFD700;
      margin-bottom: 15px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      font-weight: bold;
    }

    .page-88k__hero-subtitle {
      font-size: 1.5em;
      color: #FFFFFF;
      margin-bottom: 30px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    /* Giới thiệu */
    .page-88k__intro-section .page-88k__text-block {
      max-width: 800px;
      margin: 0 auto;
      font-size: 1.1em;
    }

    .page-88k__intro-section .page-88k__text-block p {
      margin-bottom: 15px;
      text-align: left;
    }
    
    .page-88k__intro-section .page-88k__text-block strong {
      color: #FFD700;
    }

    /* Danh mục trò chơi */
    .page-88k__game-categories {
      background-color: #111111;
    }

    .page-88k__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 40px;
    }

    .page-88k__game-card {
      background-color: #222222;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
    }

    .page-88k__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    }

    .page-88k__game-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-bottom: 2px solid #FFD700;
    }

    .page-88k__game-card-title {
      font-size: 1.5em;
      color: #FFD700;
      margin: 15px 0 10px;
      padding: 0 15px;
    }

    .page-88k__game-card-description {
      font-size: 0.95em;
      color: #CCCCCC;
      padding: 0 15px;
      margin-bottom: 20px;
    }

    /* Khuyến mãi */
    .page-88k__promotions-section .page-88k__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-88k__promo-card {
      background-color: #222222;
      border-radius: 12px;
      padding: 25px;
      text-align: left;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      border-left: 5px solid #FFD700;
    }

    .page-88k__promo-card:hover {
      transform: scale(1.02);
    }

    .page-88k__promo-card-icon {
      width: 60px;
      height: 60px;
      object-fit: contain;
      margin-bottom: 15px;
    }

    .page-88k__promo-card-title {
      font-size: 1.6em;
      color: #FFD700;
      margin-bottom: 10px;
    }

    .page-88k__promo-card-description {
      font-size: 1em;
      color: #CCCCCC;
      margin-bottom: 20px;
    }

    /* Nhà cung cấp trò chơi */
    .page-88k__providers-section {
      background-color: #111111;
    }

    .page-88k__provider-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 40px;
      align-items: center;
      justify-items: center;
    }

    .page-88k__provider-logo {
      max-width: 150px;
      height: auto;
      filter: grayscale(80%);
      opacity: 0.7;
      transition: filter 0.3s ease, opacity 0.3s ease;
    }

    .page-88k__provider-logo:hover {
      filter: grayscale(0%);
      opacity: 1;
    }

    /* Hướng dẫn */
    .page-88k__guide-section .page-88k__guide-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-88k__guide-item {
      background-color: #222222;
      border-radius: 12px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
    }

    .page-88k__guide-item:hover {
      transform: translateY(-5px);
    }

    .page-88k__guide-icon {
      width: 80px;
      height: 80px;
      object-fit: contain;
      margin-bottom: 15px;
      border-radius: 50%;
      background-color: #FFD700;
      padding: 10px;
    }

    .page-88k__guide-title {
      font-size: 1.4em;
      color: #FFD700;
      margin-bottom: 10px;
    }

    .page-88k__guide-description {
      font-size: 0.95em;
      color: #CCCCCC;
    }

    /* Tại sao chọn Okking 88k */
    .page-88k__why-choose-section {
      background-color: #111111;
    }

    .page-88k__advantage-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-88k__advantage-card {
      background-color: #222222;
      border-radius: 12px;
      padding: 25px;
      text-align: left;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      border-right: 5px solid #FFD700;
    }

    .page-88k__advantage-card-title {
      font-size: 1.6em;
      color: #FFD700;
      margin-bottom: 10px;
    }

    .page-88k__advantage-card-description {
      font-size: 1em;
      color: #CCCCCC;
    }

    /* FAQ Section */
    .page-88k__faq-section {
      background-color: #000000;
    }

    .page-88k__faq-list {
      max-width: 800px;
      margin: 40px auto 0;
      text-align: left;
    }

    .page-88k__faq-item {
      background-color: #1a1a1a;
      border-radius: 8px;
      margin-bottom: 15px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .page-88k__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      cursor: pointer;
      user-select: none;
      font-size: 1.15em;
      color: #FFD700;
      border-bottom: 1px solid #333;
      transition: background-color 0.3s ease;
    }

    .page-88k__faq-question:hover {
      background-color: #2a2a2a;
    }

    .page-88k__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      pointer-events: none; /* Prevent h3 from blocking click event */
      color: #FFD700;
      font-size: 1.15em;
    }

    .page-88k__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: #FFD700;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-88k__faq-item.active .page-88k__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' visually, or '-' */
      content: '−'; /* This won't work in CSS, handled by JS */
    }

    .page-88k__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #CCCCCC;
      font-size: 1em;
    }

    .page-88k__faq-item.active .page-88k__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px !important;
      opacity: 1;
    }

    /* Social Media */
    .page-88k__social-section .page-88k__social-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
    }

    .page-88k__social-link {
      color: #FFD700;
      font-size: 1.2em;
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .page-88k__social-link:hover {
      color: #FFFFFF;
    }

    /* Nút đăng nhập nổi */
    .page-88k__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #FFD700;
      color: #000000;
      padding: 15px 25px;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.3s ease;
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      border: none;
      white-space: nowrap; /* Prevent text wrapping */
    }

    .page-88k__floating-button:hover {
      background-color: #e6c200;
      transform: translateY(-3px);
    }
    
    .page-88k__floating-button span {
        margin-right: 8px;
        font-size: 1.5em;
        line-height: 1;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-88k__hero-section {
        padding-top: 10px; /* Fixed header safety padding for mobile */
      }

      .page-88k__section-title {
        font-size: 2em;
      }

      .page-88k__hero-title {
        font-size: 2.5em;
      }

      .page-88k__hero-subtitle {
        font-size: 1.2em;
      }

      .page-88k__game-grid,
      .page-88k__promo-grid,
      .page-88k__provider-grid,
      .page-88k__guide-grid,
      .page-88k__advantage-grid {
        grid-template-columns: 1fr;
      }

      .page-88k__game-card-image {
        height: 180px;
      }

      .page-88k__faq-question, .page-88k__faq-question h3 {
        font-size: 1em;
      }
      .page-88k__faq-answer {
        font-size: 0.9em;
      }
      .page-88k__faq-item.active .page-88k__faq-answer {
        padding: 15px !important;
      }

      .page-88k__floating-button {
        font-size: 1em;
        padding: 12px 20px;
        bottom: 15px;
        right: 15px;
      }
      .page-88k__floating-button span {
        font-size: 1.2em;
      }

      /* Responsive image optimization */
      .page-88k img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-88k__game-card-image,
      .page-88k__promo-card-icon,
      .page-88k__provider-logo,
      .page-88k__guide-icon {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-88k__hero-image {
        max-width: 100% !important;
        height: auto !important;
      }
    }