:root {
      --page-tk88-primary-color: #e44d26; /* Một màu cam đỏ nổi bật */
      --page-tk88-secondary-color: #333;
      --page-tk88-background-light: #f9f9f9;
      --page-tk88-text-dark: #1a1a1a;
      --page-tk88-text-light: #ffffff;
      --page-tk88-accent-color: #ffcc00; /* Màu vàng để nhấn mạnh khuyến mãi */
      --page-tk88-border-radius: 8px;
    }

    body {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-tk88-text-dark);
      background-color: var(--page-tk88-background-light);
    }

    .page-tk88 {
      max-width: 100%;
      margin: 0 auto;
      overflow-x: hidden; /* Đảm bảo không có scroll ngang */
    }

    .page-tk88-banner {
      position: relative;
      width: 100%;
      overflow: hidden;
      text-align: center;
      padding-bottom: 20px; /* Khoảng cách với nội dung bên dưới */
      background-color: var(--page-tk88-secondary-color);
      color: var(--page-tk88-text-light);
    }

    .page-tk88-banner-image {
      width: 100%;
      height: auto;
      max-height: 300px; /* Giới hạn chiều cao banner trên di động */
      object-fit: cover;
      display: block; /* Loại bỏ khoảng trắng dưới ảnh */
    }

    .page-tk88-banner-content {
      position: relative;
      z-index: 2;
      padding: 15px 15px 0;
      text-align: center;
    }

    .page-tk88-banner h1 {
      color: var(--page-tk88-accent-color);
      font-size: 2.2em;
      margin-top: 15px;
      margin-bottom: 10px;
      line-height: 1.2;
    }

    .page-tk88-banner p {
      font-size: 1.1em;
      margin-bottom: 20px;
      color: #ccc;
    }

    .page-tk88-floating-buttons {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 15px;
      z-index: 1000;
      width: calc(100% - 30px); /* Đảm bảo nút không quá rộng trên mobile */
      max-width: 400px; /* Giới hạn chiều rộng trên màn hình lớn hơn */
      justify-content: center;
    }

    .page-tk88-btn {
      display: block;
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-align: center;
      white-space: nowrap; /* Ngăn chữ xuống dòng */
      flex-grow: 1; /* Cho phép nút mở rộng */
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }

    .page-tk88-btn-register {
      background-color: var(--page-tk88-primary-color);
      color: var(--page-tk88-text-light);
      border: 2px solid var(--page-tk88-primary-color);
    }

    .page-tk88-btn-register:hover {
      background-color: #c0392b;
      transform: translateY(-2px);
    }

    .page-tk88-btn-login {
      background-color: var(--page-tk88-accent-color);
      color: var(--page-tk88-text-dark);
      border: 2px solid var(--page-tk88-accent-color);
    }

    .page-tk88-btn-login:hover {
      background-color: #e6b800;
      transform: translateY(-2px);
    }

    .page-tk88-section {
      padding: 30px 15px;
      margin-bottom: 20px;
      background-color: var(--page-tk88-text-light);
      border-radius: var(--page-tk88-border-radius);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    }

    .page-tk88-section h2 {
      color: var(--page-tk88-primary-color);
      font-size: 1.8em;
      margin-bottom: 25px;
      text-align: center;
    }

    .page-tk88-section h3 {
      color: var(--page-tk88-secondary-color);
      font-size: 1.4em;
      margin-top: 20px;
      margin-bottom: 15px;
    }

    .page-tk88-text-center {
      text-align: center;
    }

    .page-tk88-game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      justify-content: center;
      margin-top: 20px;
    }

    .page-tk88-game-card {
      background-color: #fff;
      border: 1px solid #eee;
      border-radius: var(--page-tk88-border-radius);
      overflow: hidden;
      text-align: center;
      padding: 15px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .page-tk88-game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    }

    .page-tk88-game-card img {
      width: 100%;
      height: 100px;
      object-fit: contain;
      margin-bottom: 10px;
      border-radius: 5px;
    }

    .page-tk88-game-card h4 {
      font-size: 1.1em;
      color: var(--page-tk88-secondary-color);
      margin-bottom: 5px;
    }

    .page-tk88-game-card a {
      text-decoration: none;
      color: var(--page-tk88-primary-color);
      font-weight: bold;
    }

    .page-tk88-game-card a:hover {
      text-decoration: underline;
    }

    .page-tk88-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-tk88-list li {
      background-color: #f0f0f0;
      margin-bottom: 10px;
      padding: 15px;
      border-radius: 5px;
      border-left: 5px solid var(--page-tk88-primary-color);
      font-size: 1.05em;
    }

    .page-tk88-flex-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 20px;
    }

    .page-tk88-icon-card {
      flex: 1 1 calc(50% - 20px); /* 2 cột trên di động */
      max-width: calc(50% - 20px);
      background-color: #fff;
      padding: 20px;
      border-radius: var(--page-tk88-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-tk88-icon-card img {
      width: 60px;
      height: 60px;
      margin-bottom: 15px;
    }

    .page-tk88-icon-card h4 {
      font-size: 1.2em;
      color: var(--page-tk88-primary-color);
      margin-bottom: 10px;
    }

    .page-tk88-icon-card p {
      font-size: 0.95em;
      color: #555;
    }

    .page-tk88-faq-item {
      background-color: #fff;
      border: 1px solid #e0e0e0;
      border-radius: var(--page-tk88-border-radius);
      margin-bottom: 10px;
      overflow: hidden;
    }

    .page-tk88-faq-question {
      padding: 15px 20px;
      background-color: #f5f5f5;
      cursor: pointer;
      font-weight: bold;
      color: var(--page-tk88-secondary-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background-color 0.3s ease;
    }

    .page-tk88-faq-question:hover {
      background-color: #eee;
    }

    .page-tk88-faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, padding 0.3s ease-out;
      color: #444;
    }

    .page-tk88-faq-answer.active {
      max-height: 200px; /* Adjust as needed */
      padding: 15px 20px;
    }

    .page-tk88-faq-toggle-icon {
      font-size: 1.2em;
      transition: transform 0.3s ease;
    }

    .page-tk88-faq-question.active .page-tk88-faq-toggle-icon {
      transform: rotate(180deg);
    }

    @media (min-width: 768px) {
      .page-tk88-banner {
        max-height: 400px;
      }
      .page-tk88-banner-image {
        max-height: 400px;
      }
      .page-tk88-banner h1 {
        font-size: 3em;
      }
      .page-tk88-banner p {
        font-size: 1.2em;
      }
      .page-tk88-section {
        padding: 40px 30px;
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
      }
      .page-tk88-section h2 {
        font-size: 2.5em;
      }
      .page-tk88-game-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      }
      .page-tk88-icon-card {
        flex: 1 1 calc(33.333% - 20px); /* 3 cột trên desktop */
        max-width: calc(33.333% - 20px);
      }
      .page-tk88-floating-buttons {
        bottom: 30px;
        gap: 20px;
      }
      .page-tk88-btn {
        padding: 15px 30px;
        font-size: 1.2em;
      }
    }

    @media (min-width: 1024px) {
      .page-tk88-game-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      }
      .page-tk88-icon-card {
        flex: 1 1 calc(25% - 20px); /* 4 cột trên desktop lớn */
        max-width: calc(25% - 20px);
      }
    }