/* Tổng thể */
    .page-tr88 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f5f7fa;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-tr88__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    /* Tiêu đề */
    .page-tr88__heading-primary {
      color: #0056b3;
      text-align: center;
      margin-bottom: 25px;
      font-size: 2.5em;
      font-weight: bold;
    }

    .page-tr88__heading-secondary {
      color: #0056b3;
      margin-top: 40px;
      margin-bottom: 20px;
      font-size: 2em;
      border-bottom: 2px solid #0056b3;
      padding-bottom: 10px;
    }

    .page-tr88__heading-tertiary {
      color: #0056b3;
      margin-top: 30px;
      margin-bottom: 15px;
      font-size: 1.5em;
    }

    /* Phần Hero */
    .page-tr88__hero-section {
      position: relative;
      background-color: #003366;
      color: #fff;
      text-align: center;
      padding: 10px 0 50px 0; /* padding-top cho header cố định */
      overflow: hidden;
      border-radius: 8px;
      margin-bottom: 30px;
    }

    .page-tr88__hero-image {
      width: 100%;
      height: 400px;
      object-fit: cover;
      display: block;
      margin-bottom: 20px;
      border-radius: 8px;
    }

    .page-tr88__hero-content {
      position: relative;
      z-index: 1;
      padding: 0 20px;
    }

    .page-tr88__hero-content h1 {
      font-size: 3.2em;
      margin-bottom: 15px;
      color: #ffe000;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-tr88__hero-content p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-tr88__hero-button {
      display: inline-block;
      background-color: #ff4500;
      color: #fff;
      padding: 15px 30px;
      font-size: 1.2em;
      font-weight: bold;
      border-radius: 50px;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      cursor: pointer;
      border: none;
    }

    .page-tr88__hero-button:hover {
      background-color: #e03e00;
      transform: translateY(-3px);
    }

    /* Phần Giới thiệu */
    .page-tr88__intro-section {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      margin-bottom: 30px;
    }

    .page-tr88__intro-section p {
      margin-bottom: 15px;
      font-size: 1.1em;
    }

    /* Phần Danh mục trò chơi */
    .page-tr88__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
      margin-bottom: 30px;
    }

    .page-tr88__game-card {
      background-color: #fff;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .page-tr88__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

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

    .page-tr88__game-card-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-tr88__game-card-content h3 {
      font-size: 1.4em;
      color: #0056b3;
      margin-bottom: 10px;
    }

    .page-tr88__game-card-content p {
      font-size: 0.95em;
      color: #555;
      margin-bottom: 15px;
      flex-grow: 1;
    }

    .page-tr88__game-card-button {
      display: inline-block;
      background-color: #007bff;
      color: #fff;
      padding: 10px 20px;
      border-radius: 25px;
      text-decoration: none;
      font-size: 0.9em;
      font-weight: bold;
      transition: background-color 0.3s ease;
      cursor: pointer;
      border: none;
      margin-top: auto;
    }

    .page-tr88__game-card-button:hover {
      background-color: #0056b3;
    }

    /* Phần Tải và Đăng ký */
    .page-tr88__download-section {
      background-color: #e9f5ff;
      padding: 40px;
      border-radius: 8px;
      text-align: center;
      margin-bottom: 30px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .page-tr88__download-section p {
      font-size: 1.1em;
      margin-bottom: 25px;
    }

    .page-tr88__download-button {
      display: inline-block;
      background-color: #28a745;
      color: #fff;
      padding: 18px 35px;
      font-size: 1.3em;
      font-weight: bold;
      border-radius: 50px;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
    }

    .page-tr88__download-button:hover {
      background-color: #218838;
      transform: translateY(-3px);
    }

    /* Phần Ưu đãi */
    .page-tr88__promo-section {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      margin-bottom: 30px;
    }

    .page-tr88__promo-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-tr88__promo-item {
      display: flex;
      align-items: flex-start;
      margin-bottom: 20px;
      padding-bottom: 20px;
      border-bottom: 1px dashed #eee;
    }

    .page-tr88__promo-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }

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

    .page-tr88__promo-content h3 {
      font-size: 1.3em;
      color: #0056b3;
      margin-top: 0;
      margin-bottom: 8px;
    }

    .page-tr88__promo-content p {
      font-size: 1em;
      color: #555;
    }

    /* Phần FAQ */
    .page-tr88__faq-section {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      margin-bottom: 30px;
    }

    .page-tr88__faq-item {
      margin-bottom: 15px;
      border: 1px solid #ddd;
      border-radius: 5px;
      overflow: hidden;
    }

    .page-tr88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px;
      background-color: #f0f8ff;
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      color: #0056b3;
      transition: background-color 0.3s ease;
    }

    .page-tr88__faq-question:hover {
      background-color: #e0f0ff;
    }

    .page-tr88__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-tr88__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click on parent */
    }

    .page-tr88__faq-item.active .page-tr88__faq-toggle {
      transform: rotate(45deg);
    }

    .page-tr88__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      opacity: 0;
      background-color: #fcfdff;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: #555;
    }

    .page-tr88__faq-item.active .page-tr88__faq-answer {
      max-height: 2000px !important;
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Nút đăng nhập nổi */
    .page-tr88__floating-button-wrapper {
      position: fixed;
      bottom: 20px;
      left: 0;
      width: 100%;
      z-index: 1000;
      text-align: center;
      padding: 0 10px;
      box-sizing: border-box;
    }

    .page-tr88__floating-button {
      display: inline-block;
      background-image: linear-gradient(45deg, #ff6b6b, #ff4757);
      color: #fff;
      padding: 15px 30px;
      font-size: 1.2em;
      font-weight: bold;
      border-radius: 50px;
      text-decoration: none;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      white-space: nowrap; /* Prevent text wrapping */
      overflow: hidden; /* Hide overflow if any */
      text-overflow: ellipsis; /* Add ellipsis if text overflows */
      max-width: 90%; /* Limit width for mobile */
      box-sizing: border-box;
    }

    .page-tr88__floating-button:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-tr88__container {
        padding: 15px;
      }

      .page-tr88__hero-section {
        padding-top: 10px; /* Điều chỉnh cho mobile header */
      }

      .page-tr88__hero-image {
        height: 250px;
      }

      .page-tr88__hero-content h1 {
        font-size: 2.2em;
      }

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

      .page-tr88__hero-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      .page-tr88__heading-primary {
        font-size: 2em;
      }

      .page-tr88__heading-secondary {
        font-size: 1.6em;
      }

      .page-tr88__heading-tertiary {
        font-size: 1.3em;
      }

      .page-tr88__game-categories {
        grid-template-columns: 1fr;
      }

      .page-tr88__game-card-image {
        height: 180px;
      }

      .page-tr88__download-section {
        padding: 30px 20px;
      }

      .page-tr88__download-button {
        padding: 15px 25px;
        font-size: 1.1em;
      }

      .page-tr88__promo-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }

      .page-tr88__promo-icon {
        margin-right: 0;
        margin-bottom: 15px;
      }

      /* Mobile list specific styles */
      .page-tr88__promo-list,
      .page-tr88__game-categories {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }

      .page-tr88__promo-item,
      .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;
        word-break: break-word !important;
      }

      .page-tr88__faq-answer {
        padding: 0 10px;
      }

      .page-tr88__faq-item.active .page-tr88__faq-answer {
        padding: 15px 10px !important;
      }

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