:root {
      --page-c7clubs-primary-color: #e44d26; /* Một màu đỏ/cam rực rỡ */
      --page-c7clubs-secondary-color: #333;
      --page-c7clubs-accent-color: #ffcc00; /* Vàng/gold cho các điểm nhấn */
      --page-c7clubs-text-color: #333;
      --page-c7clubs-light-text-color: #f8f8f8;
      --page-c7clubs-background-light: #f4f4f4;
      --page-c7clubs-background-dark: #222;
      --page-c7clubs-border-color: #ddd;
    }

    .page-c7clubs {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-c7clubs-text-color);
      background-color: #fff;
      padding: 0;
      margin: 0;
    }

    /* Đảm bảo khoảng cách cho header cố định */
    .page-c7clubs__hero-section {
      padding-top: 70px; /* Điều chỉnh dựa trên chiều cao header cố định */
      position: relative;
    }

    @media (max-width: 768px) {
      .page-c7clubs__hero-section {
        padding-top: 60px; /* Khoảng cách nhỏ hơn cho thiết bị di động */
      }
    }

    .page-c7clubs__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    @media (max-width: 768px) {
      .page-c7clubs__container {
        padding: 10px;
      }
    }

    /* Phần Hero */
    .page-c7clubs__hero-section {
      background-color: var(--page-c7clubs-background-dark);
      color: var(--page-c7clubs-light-text-color);
      text-align: center;
      padding-bottom: 40px;
      overflow: hidden;
      position: relative;
    }

    .page-c7clubs__hero-image {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      max-height: 500px; /* Giới hạn chiều cao hình ảnh hero */
      margin-bottom: 20px;
      box-sizing: border-box;
    }

    .page-c7clubs__hero-content {
      position: relative;
      z-index: 1;
      padding: 0 20px;
      box-sizing: border-box;
    }

    .page-c7clubs__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-c7clubs-accent-color);
    }

    .page-c7clubs__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Nút Đăng nhập nổi */
    .page-c7clubs__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-c7clubs-primary-color);
      color: #fff;
      padding: 15px 25px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      cursor: pointer;
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease;
      text-decoration: none; /* Đảm bảo trông như một nút, không phải liên kết */
    }

    .page-c7clubs__floating-button:hover {
      background-color: #c0392b; /* Màu đậm hơn khi hover */
      transform: translateY(-3px);
    }

    @media (max-width: 768px) {
      .page-c7clubs__hero-title {
        font-size: 2em;
      }
      .page-c7clubs__hero-description {
        font-size: 1em;
      }
      .page-c7clubs__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
    }

    /* Phong cách Section */
    .page-c7clubs__section {
      padding: 60px 0;
      text-align: center;
    }

    .page-c7clubs__section--light {
      background-color: var(--page-c7clubs-background-light);
    }

    .page-c7clubs__section--dark {
      background-color: var(--page-c7clubs-background-dark);
      color: var(--page-c7clubs-light-text-color);
    }

    .page-c7clubs__section-title {
      font-size: 2.2em;
      margin-bottom: 40px;
      color: var(--page-c7clubs-primary-color);
      position: relative;
      padding-bottom: 10px;
    }

    .page-c7clubs__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-c7clubs-accent-color);
      border-radius: 2px;
    }

    .page-c7clubs__section--dark .page-c7clubs__section-title {
      color: var(--page-c7clubs-accent-color);
    }

    @media (max-width: 768px) {
      .page-c7clubs__section {
        padding: 40px 0;
      }
      .page-c7clubs__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
      }
    }

    /* Tính năng / Tại sao chọn C7clubs */
    .page-c7clubs__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      text-align: left;
    }

    .page-c7clubs__feature-item {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border-top: 5px solid var(--page-c7clubs-primary-color);
      box-sizing: border-box; /* Quan trọng cho responsive */
    }

    .page-c7clubs__feature-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
    }

    .page-c7clubs__feature-icon {
      width: 250px; /* Đảm bảo kích thước tối thiểu 200px */
      height: auto;
      margin-bottom: 20px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }

    .page-c7clubs__feature-title {
      font-size: 1.4em;
      margin-bottom: 15px;
      color: var(--page-c7clubs-primary-color);
    }

    .page-c7clubs__feature-description {
      font-size: 1em;
      color: var(--page-c7clubs-secondary-color);
    }

    /* Danh mục trò chơi */
    .page-c7clubs__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
    }

    .page-c7clubs__game-card {
      background-color: #fff;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      box-sizing: border-box;
    }

    .page-c7clubs__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.12);
    }

    .page-c7clubs__game-image {
      width: 100%;
      height: 200px; /* Đảm bảo chiều cao tối thiểu 200px */
      object-fit: cover;
      display: block;
      box-sizing: border-box;
    }

    .page-c7clubs__game-info {
      padding: 20px;
    }

    .page-c7clubs__game-title {
      font-size: 1.3em;
      margin-bottom: 10px;
      color: var(--page-c7clubs-primary-color);
    }

    .page-c7clubs__game-description {
      font-size: 0.95em;
      color: var(--page-c7clubs-secondary-color);
      margin-bottom: 15px;
    }

    .page-c7clubs__game-button {
      display: inline-block;
      background-color: var(--page-c7clubs-accent-color);
      color: var(--page-c7clubs-secondary-color);
      padding: 10px 20px;
      border-radius: 5px;
      font-weight: bold;
      transition: background-color 0.3s ease;
      text-decoration: none;
      border: none;
      cursor: pointer;
    }

    .page-c7clubs__game-button:hover {
      background-color: #fdd835; /* Màu vàng đậm hơn */
    }

    /* Khuyến mãi */
    .page-c7clubs__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      text-align: left;
    }

    .page-c7clubs__promo-card {
      background-color: #fff;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
      border-left: 5px solid var(--page-c7clubs-accent-color);
      padding: 25px;
      box-sizing: border-box;
    }

    .page-c7clubs__promo-title {
      font-size: 1.5em;
      color: var(--page-c7clubs-primary-color);
      margin-bottom: 10px;
    }

    .page-c7clubs__promo-description {
      font-size: 1em;
      color: var(--page-c7clubs-secondary-color);
      margin-bottom: 15px;
    }

    .page-c7clubs__promo-link {
      display: inline-block;
      background-color: var(--page-c7clubs-primary-color);
      color: var(--page-c7clubs-light-text-color);
      padding: 10px 20px;
      border-radius: 5px;
      font-weight: bold;
      transition: background-color 0.3s ease;
      text-decoration: none;
      border: none;
      cursor: pointer;
    }

    .page-c7clubs__promo-link:hover {
      background-color: #c0392b;
    }

    /* Cách chơi / Tham gia */
    .page-c7clubs__steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .page-c7clubs__step-item {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
      text-align: center;
      box-sizing: border-box;
    }

    .page-c7clubs__step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: var(--page-c7clubs-primary-color);
      color: var(--page-c7clubs-light-text-color);
      font-size: 1.8em;
      font-weight: bold;
      margin-bottom: 20px;
    }

    .page-c7clubs__step-title {
      font-size: 1.3em;
      color: var(--page-c7clubs-secondary-color);
      margin-bottom: 10px;
    }

    .page-c7clubs__step-description {
      font-size: 0.95em;
      color: var(--page-c7clubs-text-color);
    }

    /* Phần Tải ứng dụng */
    .page-c7clubs__app-download {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 30px;
    }

    .page-c7clubs__app-image {
      width: 300px; /* Đảm bảo kích thước tối thiểu 200px */
      height: auto;
      max-width: 100%;
      border-radius: 10px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
      box-sizing: border-box;
    }

    .page-c7clubs__app-info {
      text-align: center;
    }

    .page-c7clubs__app-title {
      font-size: 1.8em;
      color: var(--page-c7clubs-accent-color);
      margin-bottom: 15px;
    }

    .page-c7clubs__app-description {
      font-size: 1.1em;
      color: var(--page-c7clubs-light-text-color);
      margin-bottom: 25px;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-c7clubs__app-buttons {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .page-c7clubs__app-button {
      display: inline-flex;
      align-items: center;
      background-color: var(--page-c7clubs-primary-color);
      color: var(--page-c7clubs-light-text-color);
      padding: 12px 25px;
      border-radius: 8px;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      text-decoration: none;
      border: none;
      cursor: pointer;
      box-sizing: border-box;
    }

    .page-c7clubs__app-button:hover {
      background-color: #c0392b;
    }

    .page-c7clubs__app-button svg {
      margin-right: 10px;
      width: 24px;
      height: 24px;
      fill: currentColor;
    }

    @media (max-width: 768px) {
      .page-c7clubs__app-download {
        flex-direction: column;
      }
      .page-c7clubs__app-image {
        width: 250px;
      }
      .page-c7clubs__app-title {
        font-size: 1.5em;
      }
      .page-c7clubs__app-description {
        font-size: 1em;
      }
      .page-c7clubs__app-buttons {
        flex-direction: column;
        width: 100%;
      }
      .page-c7clubs__app-button {
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
        justify-content: center;
      }
    }

    /* Phần Câu hỏi thường gặp (FAQ) */
    .page-c7clubs__faq-list {
      max-width: 800px;
      margin: 0 auto;
      text-align: left;
    }

    .page-c7clubs__faq-item {
      background-color: #fff;
      border: 1px solid var(--page-c7clubs-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      box-sizing: border-box;
    }

    .page-c7clubs__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: #fdfdfd;
      cursor: pointer;
      user-select: none;
      border-bottom: 1px solid transparent;
      transition: background-color 0.3s ease;
    }

    .page-c7clubs__faq-question:hover {
      background-color: #f5f5f5;
    }

    .page-c7clubs__faq-item.active .page-c7clubs__faq-question {
      border-bottom-color: var(--page-c7clubs-border-color);
    }

    .page-c7clubs__faq-question h3 {
      margin: 0;
      font-size: 1.15em;
      color: var(--page-c7clubs-secondary-color);
      pointer-events: none; /* Ngăn h3 chặn sự kiện click */
    }

    .page-c7clubs__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-c7clubs-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn nút chuyển đổi chặn sự kiện click */
    }

    .page-c7clubs__faq-item.active .page-c7clubs__faq-toggle {
      transform: rotate(45deg); /* Thay đổi + thành X hoặc tương tự */
    }

    .page-c7clubs__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px; /* Padding ban đầu */
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: var(--page-c7clubs-text-color);
      font-size: 0.95em;
      text-align: left;
    }

    .page-c7clubs__faq-item.active .page-c7clubs__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important; /* Padding cuối cùng */
      opacity: 1;
    }

    @media (max-width: 768px) {
      .page-c7clubs__faq-question,
      .page-c7clubs__faq-answer {
        padding-left: 15px;
        padding-right: 15px;
      }
      .page-c7clubs__faq-question h3 {
        font-size: 1em;
      }
      .page-c7clubs__faq-toggle {
        font-size: 1.5em;
      }
      .page-c7clubs__faq-answer {
        padding: 0 15px;
      }
      .page-c7clubs__faq-item.active .page-c7clubs__faq-answer {
        padding: 15px 15px !important;
      }
    }

    /* Điều chỉnh responsive chung */
    @media (max-width: 768px) {
      /* Đảm bảo các mục danh sách có chiều rộng 100% và box-sizing border-box */
      .page-c7clubs__features-grid,
      .page-c7clubs__game-categories,
      .page-c7clubs__promo-grid,
      .page-c7clubs__steps-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .page-c7clubs__feature-item,
      .page-c7clubs__game-card,
      .page-c7clubs__promo-card,
      .page-c7clubs__step-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 20px; /* Điều chỉnh padding cho di động nếu cần */
      }

      .page-c7clubs__feature-item p,
      .page-c7clubs__game-card p,
      .page-c7clubs__promo-card p,
      .page-c7clubs__step-item p,
      .page-c7clubs__faq-answer p {
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      /* Hình ảnh responsive */
      .page-c7clubs__hero-image,
      .page-c7clubs__feature-icon,
      .page-c7clubs__game-image,
      .page-c7clubs__app-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      
      .page-c7clubs__app-download {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    /* Kêu gọi hành động */
    .page-c7clubs__cta-section {
      background-color: var(--page-c7clubs-primary-color);
      color: var(--page-c7clubs-light-text-color);
      padding: 60px 20px;
      text-align: center;
    }

    .page-c7clubs__cta-title {
      font-size: 2.5em;
      margin-bottom: 20px;
      color: var(--page-c7clubs-accent-color);
    }

    .page-c7clubs__cta-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-c7clubs__cta-button {
      display: inline-block;
      background-color: var(--page-c7clubs-accent-color);
      color: var(--page-c7clubs-primary-color);
      padding: 15px 30px;
      border-radius: 50px;
      font-size: 1.2em;
      font-weight: bold;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-c7clubs__cta-button:hover {
      background-color: #fdd835;
      transform: translateY(-3px);
    }

    @media (max-width: 768px) {
      .page-c7clubs__cta-title {
        font-size: 2em;
      }
      .page-c7clubs__cta-description {
        font-size: 1em;
      }
      .page-c7clubs__cta-button {
        font-size: 1em;
        padding: 12px 25px;
      }
    }