/* Tổng thể */
    .page-tr88 {
      font-family: 'Arial', sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f8f8f8;
    }

    /* Thiết lập padding-top cho phần hero để tránh bị che bởi header cố định */
    .page-tr88__hero-section {
      padding-top: 10px; /* Desktop */
      position: relative;
      overflow: hidden;
      background-color: #0a1f44;
      color: #fff;
      text-align: center;
    }

    .page-tr88__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.5;
      z-index: 0;
    }

    .page-tr88__hero-content {
      position: relative;
      z-index: 1;
      padding: 60px 20px;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-tr88__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #ffcc00; /* Màu vàng nổi bật */
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-tr88__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: #e0e0e0;
    }

    .page-tr88__cta-button {
      display: inline-block;
      background-color: #007bff; /* Màu xanh dương */
      color: #fff;
      padding: 15px 30px;
      border-radius: 8px;
      font-size: 1.2em;
      font-weight: bold;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      border: none;
      cursor: pointer;
    }

    .page-tr88__cta-button:hover {
      background-color: #0056b3;
      transform: translateY(-3px);
    }

    /* Các phần nội dung chung */
    .page-tr88__section {
      padding: 60px 20px;
      max-width: 1200px;
      margin: 0 auto;
      background-color: #fff;
      margin-bottom: 20px;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .page-tr88__section-dark {
      background-color: #f0f2f5;
    }

    .page-tr88__section-title {
      font-size: 2.2em;
      color: #0a1f44;
      text-align: center;
      margin-bottom: 40px;
      position: relative;
    }

    .page-tr88__section-title::after {
      content: '';
      display: block;
      width: 80px;
      height: 4px;
      background-color: #ffcc00;
      margin: 15px auto 0;
      border-radius: 2px;
    }

    .page-tr88__text-block {
      font-size: 1.1em;
      color: #555;
      margin-bottom: 20px;
      text-align: justify;
    }

    /* Hướng dẫn tải app */
    .page-tr88__download-steps {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      justify-content: center;
      margin-top: 40px;
    }

    .page-tr88__step-item {
      background-color: #f9f9f9;
      border: 1px solid #eee;
      border-radius: 10px;
      padding: 30px;
      text-align: center;
      flex: 1;
      min-width: 280px;
      max-width: 350px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box; /* Bắt buộc cho responsive */
    }

    .page-tr88__step-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    }

    .page-tr88__step-icon {
      width: 100px;
      height: 100px;
      object-fit: contain;
      margin-bottom: 20px;
    }

    .page-tr88__step-number {
      font-size: 1.8em;
      font-weight: bold;
      color: #007bff;
      margin-bottom: 15px;
    }

    .page-tr88__step-title {
      font-size: 1.4em;
      color: #0a1f44;
      margin-bottom: 15px;
    }

    .page-tr88__step-description {
      font-size: 1em;
      color: #666;
    }

    /* Danh sách trò chơi */
    .page-tr88__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-tr88__game-card {
      background-color: #fff;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box; /* Bắt buộc cho responsive */
    }

    .page-tr88__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    }

    .page-tr88__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-tr88__game-content {
      padding: 25px;
    }

    .page-tr88__game-title {
      font-size: 1.3em;
      color: #0a1f44;
      margin-bottom: 10px;
    }

    .page-tr88__game-description {
      font-size: 0.95em;
      color: #666;
    }

    /* Ưu đãi khuyến mãi */
    .page-tr88__promo-list {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      justify-content: center;
      margin-top: 40px;
    }

    .page-tr88__promo-item {
      background-color: #e6f7ff; /* Nền xanh nhạt */
      border: 1px solid #b3e0ff;
      border-radius: 10px;
      padding: 25px;
      flex: 1;
      min-width: 300px;
      max-width: 450px;
      display: flex;
      align-items: flex-start;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      box-sizing: border-box; /* Bắt buộc cho responsive */
    }

    .page-tr88__promo-icon {
      width: 60px;
      height: 60px;
      object-fit: contain;
      margin-right: 20px;
      flex-shrink: 0;
    }

    .page-tr88__promo-details {
      flex-grow: 1;
    }

    .page-tr88__promo-title {
      font-size: 1.3em;
      color: #0a1f44;
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-tr88__promo-description {
      font-size: 1em;
      color: #444;
    }

    /* FAQ */
    .page-tr88__faq-container {
      margin-top: 40px;
    }

    .page-tr88__faq-item {
      background-color: #fefefe;
      border: 1px solid #eee;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }

    .page-tr88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: #f0f0f0;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-tr88__faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-tr88__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: #0a1f44;
      pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
      flex-grow: 1;
    }

    .page-tr88__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: #007bff;
      margin-left: 15px;
      pointer-events: none; /* Ngăn chặn toggle chặn sự kiện click */
      transition: transform 0.3s ease;
    }

    .page-tr88__faq-item.active .page-tr88__faq-toggle {
      transform: rotate(45deg);
      color: #dc3545; /* Màu đỏ khi mở */
    }

    .page-tr88__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #555;
    }

    .page-tr88__faq-item.active .page-tr88__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Nút đăng ký/tải app nổi */
    .page-tr88__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: #dc3545; /* Màu đỏ nổi bật */
      color: #fff;
      padding: 15px 25px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      text-align: center;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      white-space: nowrap; /* Đảm bảo văn bản không bị ngắt dòng */
      animation: page-tr88__pulse 2s infinite;
    }

    .page-tr88__floating-button:hover {
      background-color: #c82333;
      transform: translateX(-50%) translateY(-3px);
    }

    @keyframes page-tr88__pulse {
      0% { transform: translateX(-50%) scale(1); }
      50% { transform: translateX(-50%) scale(1.03); }
      100% { transform: translateX(-50%) scale(1); }
    }

    /* Hình ảnh */
    .page-tr88__image-full-width {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 8px;
      margin: 20px auto;
      object-fit: cover;
    }

    /* Responsive cho di động */
    @media (max-width: 768px) {
      .page-tr88__hero-section {
        padding-top: 10px; /* Mobile */
      }

      .page-tr88__hero-content {
        padding: 40px 15px;
      }

      .page-tr88__hero-title {
        font-size: 2em;
      }

      .page-tr88__hero-subtitle {
        font-size: 1em;
      }

      .page-tr88__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-tr88__section {
        padding: 40px 15px;
      }

      .page-tr88__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
      }

      .page-tr88__text-block {
        font-size: 0.95em;
      }

      .page-tr88__download-steps {
        flex-direction: column;
        gap: 20px;
        padding: 0 !important; /* Đảm bảo không có padding thừa */
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .page-tr88__step-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 20px;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-tr88__game-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 !important; /* Đảm bảo không có padding thừa */
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .page-tr88__game-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-tr88__promo-list {
        flex-direction: column;
        gap: 20px;
        padding: 0 !important; /* Đảm bảo không có padding thừa */
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .page-tr88__promo-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 15px;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-tr88__promo-icon {
        width: 40px;
        height: 40px;
        margin-right: 15px;
      }

      .page-tr88__promo-title {
        font-size: 1.1em;
      }

      .page-tr88__promo-description {
        font-size: 0.9em;
      }

      .page-tr88__faq-question {
        padding: 15px 20px;
      }

      .page-tr88__faq-question h3 {
        font-size: 1.1em;
      }

      .page-tr88__faq-toggle {
        font-size: 1.5em;
      }

      .page-tr88__faq-answer {
        padding: 0 20px;
      }

      .page-tr88__faq-item.active .page-tr88__faq-answer {
        padding: 15px 20px !important;
      }

      .page-tr88__floating-button {
        padding: 12px 20px;
        font-size: 1em;
      }

      /* Tất cả hình ảnh phải responsive trên mobile */
      img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }