/* Tổng quan và biến CSS */
    :root {
      --page-mv66club__primary-color: #e44d26; /* Màu cam đậm */
      --page-mv66club__secondary-color: #f7b731; /* Màu vàng */
      --page-mv66club__text-color: #333;
      --page-mv66club__background-color: #f5f5f5;
      --page-mv66club__dark-background: #2c3e50; /* Màu xanh đen */
      --page-mv66club__light-text: #ffffff;
      --page-mv66club__border-color: #ddd;
      --page-mv66club__box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      --page-mv66club__border-radius: 8px;
    }

    .page-mv66club {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-mv66club__text-color);
      background-color: var(--page-mv66club__background-color);
      overflow-x: hidden;
    }

    .page-mv66club__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    /* Tiêu đề chung */
    .page-mv66club__heading-primary {
      color: var(--page-mv66club__primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-size: 2.5em;
      font-weight: bold;
      line-height: 1.2;
    }

    .page-mv66club__heading-secondary {
      color: var(--page-mv66club__dark-background);
      text-align: center;
      margin-top: 40px;
      margin-bottom: 25px;
      font-size: 2em;
      font-weight: bold;
      border-bottom: 2px solid var(--page-mv66club__primary-color);
      padding-bottom: 10px;
      display: inline-block;
      width: auto;
      max-width: 90%;
      box-sizing: border-box;
    }

    .page-mv66club__heading-tertiary {
      color: var(--page-mv66club__primary-color);
      font-size: 1.5em;
      margin-top: 30px;
      margin-bottom: 15px;
      font-weight: bold;
    }

    /* Nút chung */
    .page-mv66club__button {
      display: inline-block;
      background-color: var(--page-mv66club__primary-color);
      color: var(--page-mv66club__light-text);
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
      text-align: center;
    }

    .page-mv66club__button:hover {
      background-color: #c0392b; /* Màu đỏ đậm hơn */
      transform: translateY(-2px);
    }

    /* Phần Hero Banner */
    .page-mv66club__hero-section {
      position: relative;
      width: 100%;
      text-align: center;
      padding-top: 10px; /* Dành chỗ cho header cố định */
      background-color: var(--page-mv66club__dark-background);
      overflow: hidden;
    }

    .page-mv66club__hero-banner {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-mv66club__hero-content {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: var(--page-mv66club__light-text);
      z-index: 10;
      width: 90%;
      max-width: 800px;
      padding: 20px;
      background-color: rgba(0, 0, 0, 0.6);
      border-radius: var(--page-mv66club__border-radius);
    }

    .page-mv66club__hero-title {
      font-size: 3em;
      margin-bottom: 10px;
      line-height: 1.2;
      color: var(--page-mv66club__secondary-color);
    }

    .page-mv66club__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: 20px;
      color: var(--page-mv66club__light-text);
    }

    /* Nút nổi đăng nhập */
    .page-mv66club__floating-login-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-mv66club__primary-color);
      color: var(--page-mv66club__light-text);
      padding: 15px 25px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      box-shadow: var(--page-mv66club__box-shadow);
      z-index: 100;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      text-decoration: none;
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .page-mv66club__floating-login-button:hover {
      background-color: #c0392b;
      transform: translateY(-3px);
    }

    .page-mv66club__floating-login-button::before {
      content: '🎁'; /* Biểu tượng quà tặng */
      font-size: 1.2em;
    }

    /* Phần giới thiệu */
    .page-mv66club__introduction-section {
      background-color: var(--page-mv66club__light-text);
      padding: 50px 0;
      text-align: center;
    }

    .page-mv66club__introduction-text {
      font-size: 1.1em;
      max-width: 800px;
      margin: 0 auto 30px auto;
      padding: 0 15px;
    }

    /* Phần ưu điểm */
    .page-mv66club__advantages-section {
      background-color: #ecf0f1; /* Màu xám nhạt */
      padding: 50px 0;
    }

    .page-mv66club__advantages-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      padding: 0 20px;
    }

    .page-mv66club__advantage-card {
      background-color: var(--page-mv66club__light-text);
      padding: 25px;
      border-radius: var(--page-mv66club__border-radius);
      box-shadow: var(--page-mv66club__box-shadow);
      text-align: center;
      transition: transform 0.3s ease;
      border: 1px solid var(--page-mv66club__border-color);
    }

    .page-mv66club__advantage-card:hover {
      transform: translateY(-5px);
    }

    .page-mv66club__advantage-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      object-fit: contain;
    }

    .page-mv66club__advantage-title {
      font-size: 1.3em;
      color: var(--page-mv66club__primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-mv66club__advantage-description {
      font-size: 1em;
      color: #555;
    }

    /* Phần trò chơi */
    .page-mv66club__games-section {
      background-color: var(--page-mv66club__light-text);
      padding: 50px 0;
    }

    .page-mv66club__games-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      padding: 0 20px;
    }

    .page-mv66club__game-card {
      background-color: #fcfcfc;
      border-radius: var(--page-mv66club__border-radius);
      box-shadow: var(--page-mv66club__box-shadow);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-mv66club__border-color);
    }

    .page-mv66club__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    }

    .page-mv66club__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-mv66club__game-content {
      padding: 20px;
    }

    .page-mv66club__game-title {
      font-size: 1.4em;
      color: var(--page-mv66club__dark-background);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-mv66club__game-description {
      font-size: 0.95em;
      color: #666;
      margin-bottom: 15px;
    }

    /* Phần hướng dẫn */
    .page-mv66club__instructions-section {
      background-color: #ecf0f1;
      padding: 50px 0;
    }

    .page-mv66club__instructions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      padding: 0 20px;
    }

    .page-mv66club__instruction-step {
      background-color: var(--page-mv66club__light-text);
      padding: 30px;
      border-radius: var(--page-mv66club__border-radius);
      box-shadow: var(--page-mv66club__box-shadow);
      text-align: center;
      border: 1px solid var(--page-mv66club__border-color);
    }

    .page-mv66club__instruction-number {
      display: inline-block;
      width: 50px;
      height: 50px;
      line-height: 50px;
      background-color: var(--page-mv66club__primary-color);
      color: var(--page-mv66club__light-text);
      border-radius: 50%;
      font-size: 1.8em;
      font-weight: bold;
      margin-bottom: 15px;
    }

    .page-mv66club__instruction-title {
      font-size: 1.3em;
      color: var(--page-mv66club__dark-background);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-mv66club__instruction-description {
      font-size: 1em;
      color: #555;
    }

    /* Phần khuyến mãi */
    .page-mv66club__promotions-section {
      background-color: var(--page-mv66club__dark-background);
      padding: 50px 0;
      text-align: center;
      color: var(--page-mv66club__light-text);
    }

    .page-mv66club__promotions-heading {
      color: var(--page-mv66club__secondary-color);
    }

    .page-mv66club__promotion-item {
      max-width: 800px;
      margin: 30px auto;
      background-color: rgba(255, 255, 255, 0.1);
      padding: 25px;
      border-radius: var(--page-mv66club__border-radius);
      border: 1px dashed var(--page-mv66club__secondary-color);
    }

    .page-mv66club__promotion-title {
      font-size: 1.6em;
      color: var(--page-mv66club__secondary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-mv66club__promotion-description {
      font-size: 1.1em;
      margin-bottom: 20px;
    }

    /* Phần FAQ */
    .page-mv66club__faq-section {
      background-color: var(--page-mv66club__light-text);
      padding: 50px 0;
    }

    .page-mv66club__faq-container {
      max-width: 900px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .page-mv66club__faq-item {
      background-color: #fcfcfc;
      border: 1px solid var(--page-mv66club__border-color);
      border-radius: var(--page-mv66club__border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .page-mv66club__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 25px;
      background-color: #eee;
      cursor: pointer;
      font-weight: bold;
      color: var(--page-mv66club__dark-background);
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-mv66club__faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-mv66club__faq-question h3 {
      margin: 0;
      font-size: 1.15em;
      flex-grow: 1;
      text-align: left;
      color: var(--page-mv66club__dark-background);
      pointer-events: none; /* Ngăn chặn sự kiện click trên h3 */
    }

    .page-mv66club__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 15px;
      color: var(--page-mv66club__primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn sự kiện click trên toggle icon */
    }

    .page-mv66club__faq-item.active .page-mv66club__faq-toggle {
      transform: rotate(45deg); /* Biến + thành X hoặc - */
    }

    .page-mv66club__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      background-color: var(--page-mv66club__light-text);
      color: #555;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      font-size: 1em;
    }

    .page-mv66club__faq-item.active .page-mv66club__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Phần kết luận */
    .page-mv66club__conclusion-section {
      background-color: var(--page-mv66club__dark-background);
      padding: 50px 0;
      text-align: center;
      color: var(--page-mv66club__light-text);
    }

    .page-mv66club__conclusion-text {
      font-size: 1.1em;
      max-width: 800px;
      margin: 0 auto 30px auto;
      padding: 0 15px;
    }

    /* Responsive cho di động */
    @media (max-width: 768px) {
      .page-mv66club__hero-section {
        padding-top: 10px; /* Dành chỗ cho header cố định trên di động */
      }

      .page-mv66club__hero-title {
        font-size: 2em;
      }

      .page-mv66club__hero-subtitle {
        font-size: 1.2em;
      }

      .page-mv66club__floating-login-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      .page-mv66club__heading-primary {
        font-size: 2em;
      }

      .page-mv66club__heading-secondary {
        font-size: 1.6em;
        width: 100%;
        padding-left: 10px;
        padding-right: 10px;
      }

      .page-mv66club__heading-tertiary {
        font-size: 1.3em;
      }

      .page-mv66club__container,
      .page-mv66club__advantages-grid,
      .page-mv66club__games-grid,
      .page-mv66club__instructions-grid,
      .page-mv66club__faq-container {
        padding: 0 15px;
      }

      /* Đảm bảo hình ảnh không tràn màn hình */
      .page-mv66club__hero-banner,
      .page-mv66club__advantage-icon,
      .page-mv66club__game-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      /* Danh sách và các phần tử tương tự */
      .page-mv66club__advantages-grid,
      .page-mv66club__games-grid,
      .page-mv66club__instructions-grid {
        grid-template-columns: 1fr; /* Một cột trên di động */
      }

      .page-mv66club__advantage-card,
      .page-mv66club__game-card,
      .page-mv66club__instruction-step,
      .page-mv66club__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 20px 15px !important; /* Giảm padding để phù hợp màn hình nhỏ hơn */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-mv66club__faq-question {
        padding: 15px 20px;
      }
      .page-mv66club__faq-question h3 {
        font-size: 1em;
      }
      .page-mv66club__faq-answer {
        padding: 15px 20px !important;
      }
    }