/* Biến CSS cho màu sắc */
    :root {
      --page-kubet19-primary-color: #FFD700; /* Vàng kim */
      --page-kubet19-secondary-color: #4CAF50; /* Xanh lá */
      --page-kubet19-background-dark: #1a1a1a; /* Nền tối */
      --page-kubet19-text-light: #f0f0f0; /* Chữ sáng */
      --page-kubet19-accent-red: #E74C3C; /* Đỏ nhấn */
      --page-kubet19-border-color: #333; /* Màu viền */
      --page-kubet19-card-bg: #2c2c2c; /* Nền thẻ */
    }

    /* CSS chung cho trang Kubet 19 */
    .page-kubet19 {
      font-family: 'Arial', sans-serif;
      color: var(--page-kubet19-text-light);
      background-color: var(--page-kubet19-background-dark);
      line-height: 1.6;
      overflow-x: hidden;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-kubet19 .page-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 15px;
    }

    .page-kubet19 .section-title {
      text-align: center;
      color: var(--page-kubet19-primary-color);
      margin-bottom: 30px;
      font-size: 2.2em;
      font-weight: bold;
      position: relative;
      padding-bottom: 10px;
    }

    .page-kubet19 .section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-kubet19-secondary-color);
      border-radius: 2px;
    }

    /* Banner Section */
    .page-kubet19 .hero-banner {
      width: 100%;
      position: relative;
      overflow: hidden;
      margin-bottom: 20px;
      text-align: center; /* Đảm bảo hình ảnh banner được căn giữa */
    }

    .page-kubet19 .hero-banner img {
      width: 100%;
      height: auto;
      display: block;
      max-height: 400px; /* Giới hạn chiều cao banner */
      object-fit: cover; /* Đảm bảo ảnh hiển thị đẹp */
      margin: 0 auto; /* Căn giữa hình ảnh */
    }

    .page-kubet19 .hero-content {
      padding: 20px 15px;
      text-align: center;
    }

    .page-kubet19 .hero-content h1 {
      font-size: 2.5em;
      color: var(--page-kubet19-primary-color);
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-kubet19 .hero-content p {
      font-size: 1.1em;
      margin-bottom: 25px;
      color: var(--page-kubet19-text-light);
    }

    /* Nút Đăng Nhập/Đăng Ký Nổi */
    .page-kubet19 .floating-cta {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background-color: var(--page-kubet19-accent-red);
      padding: 15px 10px;
      text-align: center;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      animation: page-kubet19-pulse 2s infinite;
      box-sizing: border-box;
    }

    .page-kubet19 .floating-cta a {
      display: block;
      color: var(--page-kubet19-text-light);
      background-color: var(--page-kubet19-primary-color);
      padding: 12px 20px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      max-width: 300px;
      margin: 0 auto;
    }

    .page-kubet19 .floating-cta a:hover {
      background-color: #e6b800;
      transform: translateY(-2px);
    }

    @keyframes page-kubet19-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.02); }
      100% { transform: scale(1); }
    }

    /* Game List Section */
    .page-kubet19 .game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-bottom: 40px;
    }

    .page-kubet19 .game-card {
      background-color: var(--page-kubet19-card-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
    }

    .page-kubet19 .game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
    }

    .page-kubet19 .game-card img {
      width: 100%;
      height: 120px;
      object-fit: cover;
      display: block;
      border-bottom: 1px solid var(--page-kubet19-border-color);
    }

    .page-kubet19 .game-card h3 {
      font-size: 1.1em;
      color: var(--page-kubet19-primary-color);
      padding: 15px 10px;
      margin: 0;
    }

    .page-kubet19 .game-card h3 a {
      color: inherit;
      text-decoration: none;
      display: block;
    }

    .page-kubet19 .game-card h3 a:hover {
      text-decoration: underline;
    }

    /* Content Sections */
    .page-kubet19 .content-section {
      background-color: var(--page-kubet19-card-bg);
      border-radius: 10px;
      padding: 30px;
      margin-bottom: 30px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    .page-kubet19 .content-section h2 {
      color: var(--page-kubet19-secondary-color);
      font-size: 1.8em;
      margin-bottom: 20px;
      text-align: center;
    }

    .page-kubet19 .content-section p {
      margin-bottom: 15px;
      color: var(--page-kubet19-text-light);
    }

    .page-kubet19 .content-section ul {
      list-style: none;
      padding: 0;
      margin-bottom: 15px;
    }

    .page-kubet19 .content-section ul li {
      background-color: #3a3a3a;
      margin-bottom: 10px;
      padding: 12px 15px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      border-left: 4px solid var(--page-kubet19-primary-color);
    }

    .page-kubet19 .content-section ul li::before {
      content: '👉';
      margin-right: 10px;
    }

    .page-kubet19 .content-section a {
      color: var(--page-kubet19-primary-color);
      text-decoration: none;
      font-weight: bold;
    }

    .page-kubet19 .content-section a:hover {
      text-decoration: underline;
    }

    /* Buttons */
    .page-kubet19 .btn {
      display: inline-block;
      background-color: var(--page-kubet19-primary-color);
      color: var(--page-kubet19-background-dark);
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      margin-top: 20px;
    }

    .page-kubet19 .btn:hover {
      background-color: #e6b800;
      transform: translateY(-2px);
    }

    .page-kubet19 .text-center {
      text-align: center;
    }

    /* Responsive adjustments */
    @media (min-width: 768px) {
      .page-kubet19 .hero-content h1 {
        font-size: 3.5em;
      }
      .page-kubet19 .game-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      }
      .page-kubet19 .game-card img {
        height: 150px;
      }
      .page-kubet19 .game-card h3 {
        font-size: 1.2em;
      }
      .page-kubet19 .floating-cta {
        width: auto;
        left: auto;
        right: 20px;
        bottom: 20px;
        border-radius: 50px;
        padding: 10px 20px;
        max-width: 300px;
      }
      .page-kubet19 .floating-cta a {
        padding: 10px 20px;
      }
    }

    @media (min-width: 1024px) {
      .page-kubet19 .hero-content h1 {
        font-size: 4em;
      }
      .page-kubet19 .game-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      }
      .page-kubet19 .game-card img {
        height: 180px;
      }
    }