/* Tổng quan */
    .page-u888 {
      font-family: 'Arial', sans-serif;
      color: #333;
      background-color: #f8f8f8;
      line-height: 1.6;
      padding-bottom: 80px; /* Đủ chỗ cho nút nổi */
    }

    .page-u888-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    /* Tiêu đề chính */
    .page-u888-h1 {
      text-align: center;
      color: #b00000; /* Màu đỏ đậm cho sự nổi bật */
      margin-top: 20px;
      margin-bottom: 30px;
      font-size: 2.2em;
      font-weight: bold;
    }
    @media (max-width: 768px) {
      .page-u888-h1 {
        font-size: 1.8em;
      }
    }

    /* Các tiêu đề phụ */
    .page-u888-h2 {
      color: #0056b3; /* Màu xanh dương */
      margin-top: 40px;
      margin-bottom: 20px;
      font-size: 1.8em;
      border-bottom: 2px solid #eee;
      padding-bottom: 10px;
    }
    @media (max-width: 768px) {
      .page-u888-h2 {
        font-size: 1.5em;
      }
    }

    .page-u888-h3 {
      color: #007bff;
      margin-top: 30px;
      margin-bottom: 15px;
      font-size: 1.4em;
    }

    /* Banner */
    .page-u888-banner {
      position: relative;
      width: 100%;
      overflow: hidden;
      background-color: #000; /* Nền đen cho banner */
      text-align: center;
      padding: 20px 0;
    }

    .page-u888-banner-image {
      width: 100%;
      height: auto;
      max-height: 300px; /* Giới hạn chiều cao banner */
      object-fit: cover;
      display: block;
      margin: 0 auto; /* Căn giữa hình ảnh */
    }

    .page-u888-banner-content {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: #fff;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      width: 90%;
      max-width: 600px;
    }

    .page-u888-banner-title {
      font-size: 2.5em;
      margin-bottom: 10px;
      font-weight: bold;
      color: #ffc107; /* Màu vàng nổi bật */
    }

    .page-u888-banner-description {
      font-size: 1.2em;
      margin-bottom: 20px;
    }
    @media (max-width: 768px) {
      .page-u888-banner-title {
        font-size: 1.8em;
      }
      .page-u888-banner-description {
        font-size: 1em;
      }
    }

    /* Nút */
    .page-u888-button {
      display: inline-block;
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      font-size: 1.1em;
      margin: 5px;
    }

    .page-u888-button-primary {
      background-color: #dc3545; /* Màu đỏ */
      color: #fff;
      border: 1px solid #dc3545;
    }
    .page-u888-button-primary:hover {
      background-color: #c82333;
      color: #fff;
    }

    .page-u888-button-secondary {
      background-color: #007bff; /* Màu xanh */
      color: #fff;
      border: 1px solid #007bff;
    }
    .page-u888-button-secondary:hover {
      background-color: #0056b3;
      color: #fff;
    }

    /* Nút nổi */
    .page-u888-floating-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: space-around;
      padding: 10px 0;
      background-color: rgba(0, 0, 0, 0.85);
      z-index: 1000;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    }

    .page-u888-floating-button {
      flex: 1;
      text-align: center;
      margin: 0 5px;
      padding: 12px 0;
      border-radius: 8px;
      font-size: 1.1em;
      font-weight: bold;
      text-decoration: none;
      color: #fff;
      transition: background-color 0.3s ease;
    }

    .page-u888-floating-button-register {
      background-color: #ffc107; /* Màu vàng khuyến mãi */
      color: #333;
    }
    .page-u888-floating-button-register:hover {
      background-color: #e0a800;
      color: #333;
    }

    .page-u888-floating-button-login {
      background-color: #17a2b8; /* Màu xanh lam */
    }
    .page-u888-floating-button-login:hover {
      background-color: #138496;
    }

    /* Sản phẩm/Trò chơi */
    .page-u888-game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      margin-top: 30px;
      text-align: center;
    }
    @media (max-width: 480px) {
      .page-u888-game-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
      }
    }

    .page-u888-game-card {
      background-color: #fff;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-decoration: none;
      color: #333;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 15px;
    }
    .page-u888-game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }

    .page-u888-game-image {
      width: 100%;
      max-width: 150px;
      height: 120px;
      object-fit: contain; /* Đảm bảo hình ảnh không bị cắt */
      border-radius: 5px;
      margin-bottom: 10px;
    }

    .page-u888-game-title {
      font-weight: bold;
      font-size: 1.1em;
      color: #0056b3;
      margin-bottom: 5px;
    }

    .page-u888-game-description {
      font-size: 0.9em;
      color: #666;
    }

    /* Phần văn bản chung */
    .page-u888-section {
      background-color: #fff;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      margin-bottom: 30px;
    }

    .page-u888-section p {
      margin-bottom: 15px;
    }

    .page-u888-section ul {
      list-style-type: disc;
      margin-left: 20px;
      margin-bottom: 15px;
    }

    .page-u888-section li {
      margin-bottom: 8px;
    }

    /* Nhà cung cấp */
    .page-u888-providers-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 15px;
      margin-top: 20px;
    }

    .page-u888-provider-item {
      background-color: #e9ecef;
      padding: 8px 15px;
      border-radius: 5px;
      font-weight: bold;
      color: #495057;
      font-size: 0.9em;
    }

    /* Bảng xếp hạng */
    .page-u888-leaderboard-list {
      list-style: none;
      padding: 0;
      margin-top: 20px;
    }

    .page-u888-leaderboard-item {
      background-color: #f1f1f1;
      margin-bottom: 10px;
      padding: 12px 15px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      font-size: 1.1em;
      font-weight: bold;
      color: #333;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }

    .page-u888-leaderboard-item:nth-child(1) { background-color: #ffeb3b; color: #000; } /* Vàng */
    .page-u888-leaderboard-item:nth-child(2) { background-color: #c0c0c0; color: #000; } /* Bạc */
    .page-u888-leaderboard-item:nth-child(3) { background-color: #cd7f32; color: #000; } /* Đồng */

    .page-u888-leaderboard-item span {
      margin-right: 10px;
      font-size: 1.2em;
      color: #b00000;
    }

    /* SEO Tối ưu */
    .page-u888 strong {
      color: #b00000;
    }