/* CSS cho trang manclup */
    :root {
      --page-manclup-primary-bg: #1a1a1a;
      --page-manclup-secondary-bg: #2a2a2a;
      --page-manclup-text-color: #f0f0f0;
      --page-manclup-accent-color: #ffcc00;
      --page-manclup-dark-accent-color: #e6b800;
      --page-manclup-border-color: #444;
      --page-manclup-button-hover-bg: #ffdd33;
    }

    .page-manclup {
      font-family: 'Arial', sans-serif;
      background-color: var(--page-manclup-primary-bg);
      color: var(--page-manclup-text-color);
      line-height: 1.6;
      padding-bottom: 80px; /* Để tránh nút đăng nhập nổi bị che */
    }

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

    /* Banner chính */
    .page-manclup .hero-banner {
      width: 100%;
      text-align: center;
      margin-bottom: 20px;
    }

    .page-manclup .hero-banner img {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    }

    /* Tiêu đề */
    .page-manclup h1,
    .page-manclup h2,
    .page-manclup h3 {
      color: var(--page-manclup-accent-color);
      text-align: center;
      margin-bottom: 20px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
    }

    .page-manclup h1 {
      font-size: 2.2em;
      padding: 10px 0;
    }

    .page-manclup h2 {
      font-size: 1.8em;
      border-bottom: 2px solid var(--page-manclup-accent-color);
      display: inline-block;
      padding-bottom: 5px;
      margin-top: 30px;
    }

    .page-manclup h3 {
      font-size: 1.4em;
      margin-top: 25px;
      color: var(--page-manclup-text-color);
    }

    /* Đoạn văn bản */
    .page-manclup p {
      margin-bottom: 15px;
      text-align: justify;
    }

    /* Nút đăng nhập nổi */
    .page-manclup .floating-login-btn {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-manclup-accent-color);
      color: var(--page-manclup-primary-bg);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
      white-space: nowrap; /* Ngăn nút bị xuống dòng */
    }

    .page-manclup .floating-login-btn:hover {
      background-color: var(--page-manclup-dark-accent-color);
      transform: translateX(-50%) scale(1.05);
    }

    /* Các phần nội dung */
    .page-manclup section {
      background-color: var(--page-manclup-secondary-bg);
      padding: 25px 15px;
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    }

    .page-manclup .grid-container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 15px;
      margin-top: 20px;
    }

    .page-manclup .grid-item {
      background-color: var(--page-manclup-primary-bg);
      border-radius: 8px;
      overflow: hidden;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      padding: 10px;
    }

    .page-manclup .grid-item:hover {
      transform: translateY(-5px);
    }

    .page-manclup .grid-item img {
      max-width: 100%;
      height: auto;
      border-radius: 4px;
      margin-bottom: 10px;
    }

    .page-manclup .grid-item a {
      text-decoration: none;
      color: var(--page-manclup-text-color);
      font-weight: bold;
      display: block;
    }

    .page-manclup .grid-item a:hover {
      color: var(--page-manclup-accent-color);
    }

    /* Danh sách */
    .page-manclup ul {
      list-style-type: disc;
      padding-left: 25px;
      margin-bottom: 15px;
    }

    .page-manclup ul li {
      margin-bottom: 8px;
    }

    .page-manclup .button {
      display: inline-block;
      background-color: var(--page-manclup-accent-color);
      color: var(--page-manclup-primary-bg);
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      margin-top: 10px;
    }

    .page-manclup .button:hover {
      background-color: var(--page-manclup-dark-accent-color);
    }

    .page-manclup .game-provider-logo {
      max-width: 80px; /* Kích thước phù hợp cho logo nhà cung cấp */
      height: auto;
      margin: 5px;
      filter: grayscale(100%); /* Làm mờ logo */
      opacity: 0.7;
      transition: filter 0.3s ease, opacity 0.3s ease;
    }

    .page-manclup .game-provider-logo:hover {
      filter: grayscale(0%); /* Hiển thị màu khi hover */
      opacity: 1;
    }

    /* Responsive */
    @media (min-width: 768px) {
      .page-manclup h1 {
        font-size: 2.8em;
      }

      .page-manclup h2 {
        font-size: 2.2em;
      }

      .page-manclup .grid-container {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      }

      .page-manclup .floating-login-btn {
        padding: 18px 40px;
        font-size: 1.2em;
      }
    }

    @media (min-width: 1024px) {
      .page-manclup .container {
        padding: 20px;
      }

      .page-manclup h1 {
        font-size: 3.2em;
      }

      .page-manclup h2 {
        font-size: 2.5em;
      }

      .page-manclup .grid-container {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      }
    }