:root {
      --primary-color: #e44d26; /* Màu chủ đạo rực rỡ */
      --secondary-color: #333;
      --accent-color: #f0ad4e;
      --background-dark: #1a1a1a;
      --text-light: #f5f5f5;
      --text-dark: #333;
      --border-color: #555;
    }

    /* Phong cách cơ bản cho phạm vi page-c7club */
    .page-c7club {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--text-light);
      background-color: var(--background-dark);
      padding-bottom: 100px; /* Khoảng trống cho các nút nổi */
      padding-top: var(--header-offset, 122px); /* Dự phòng cho khoảng cách với header */
    }

    .page-c7club__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-c7club__section {
      padding: 40px 20px;
      margin-bottom: 30px;
      background-color: #2a2a2a;
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }
    
    .page-c7club__section--dark {
        background-color: #1a1a1a;
    }

    .page-c7club__title {
      text-align: center;
      color: var(--primary-color);
      margin-bottom: 30px;
      font-size: 2.5em;
      font-weight: 700;
      text-transform: uppercase;
    }

    .page-c7club__subtitle {
      text-align: center;
      color: var(--text-light);
      margin-bottom: 20px;
      font-size: 1.8em;
      font-weight: 600;
    }

    .page-c7club__text {
      font-size: 1.1em;
      margin-bottom: 15px;
      color: #ccc;
    }

    /* Phần Hero */
    .page-c7club__hero-section {
      position: relative;
      overflow: hidden;
      padding: 10px 0 60px; /* Đã điều chỉnh cho header offset */
      text-align: center;
      color: #fff;
      background: linear-gradient(135deg, #000000, #3a0000);
      margin-bottom: 30px;
      border-radius: 0 0 8px 8px;
    }

    .page-c7club__hero-image {
      width: 100%;
      height: 400px;
      object-fit: cover;
      opacity: 0.7;
      position: absolute;
      top: 0;
      left: 0;
      z-index: 0;
      max-width: 100%; /* Đảm bảo hình ảnh phản hồi */
      height: auto; /* Đảm bảo tỷ lệ khung hình */
      box-sizing: border-box;
    }

    .page-c7club__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
    }

    .page-c7club__hero-heading {
      font-size: 3em;
      margin-bottom: 15px;
      color: var(--primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-c7club__hero-description {
      font-size: 1.3em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      color: #eee;
    }

    /* Các nút nổi */
    .page-c7club__floating-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: space-around;
      padding: 15px 0;
      background-color: rgba(0, 0, 0, 0.9);
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.5);
      z-index: 1000;
      border-top-left-radius: 15px;
      border-top-right-radius: 15px;
    }

    .page-c7club__button {
      display: inline-block;
      padding: 12px 25px;
      background-color: var(--primary-color);
      color: #fff;
      text-decoration: none;
      border-radius: 30px;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1.1em;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    }

    .page-c7club__button:hover {
      background-color: #ff6f42;
      transform: translateY(-2px);
    }

    .page-c7club__button--secondary {
      background-color: #007bff;
    }

    .page-c7club__button--secondary:hover {
      background-color: #0056b3;
    }

    /* Hiển thị sản phẩm */
    .page-c7club__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-c7club__product-card {
      background-color: #3a3a3a;
      border-radius: 10px;
      overflow: hidden;
      text-align: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1px solid var(--border-color);
    }

    .page-c7club__product-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.6);
    }

    .page-c7club__product-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-bottom: 1px solid var(--border-color);
      max-width: 100%; /* Đảm bảo hình ảnh phản hồi */
      height: auto; /* Đảm bảo tỷ lệ khung hình */
      box-sizing: border-box;
    }

    .page-c7club__product-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-c7club__product-title {
      font-size: 1.5em;
      color: var(--primary-color);
      margin-bottom: 10px;
      font-weight: 600;
    }

    .page-c7club__product-description {
      font-size: 0.95em;
      color: #bbb;
      margin-bottom: 15px;
    }

    /* Phần khuyến mãi */
    .page-c7club__promotion-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 20px;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .page-c7club__promotion-item {
      background-color: #3a3a3a;
      border-radius: 8px;
      padding: 20px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      border-left: 5px solid var(--primary-color);
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Bắt buộc cho các mục danh sách */
    }

    .page-c7club__promotion-item:hover {
      transform: translateX(5px);
    }

    .page-c7club__promotion-title {
      color: var(--primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-c7club__promotion-description {
      color: #ccc;
      font-size: 1em;
    }

    /* Giới thiệu, Thanh toán, Nhà cung cấp */
    .page-c7club__info-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 20px;
    }

    .page-c7club__info-item {
      background-color: #3a3a3a;
      border-radius: 8px;
      padding: 15px;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      box-sizing: border-box; /* Bắt buộc cho các mục danh sách */
    }

    .page-c7club__info-image {
      max-width: 100px;
      height: auto;
      margin-bottom: 10px;
      max-width: 100%; /* Đảm bảo hình ảnh phản hồi */
      height: auto; /* Đảm bảo tỷ lệ khung hình */
      box-sizing: border-box;
    }

    .page-c7club__info-text {
      color: var(--text-light);
      font-weight: 500;
      font-size: 0.95em;
    }

    /* Phần FAQ */
    .page-c7club__faq-container {
      margin-top: 30px;
    }

    .page-c7club__faq-item {
      background-color: #333;
      border: 1px solid var(--border-color);
      margin-bottom: 10px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-c7club__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      user-select: none;
      background-color: #444;
      color: var(--text-light);
      font-weight: 600;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
    }

    .page-c7club__faq-question:hover {
      background-color: #555;
    }

    .page-c7club__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      pointer-events: none; /* Ngăn h3 chặn sự kiện click */
      color: var(--primary-color);
    }

    .page-c7club__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      margin-left: 15px;
      pointer-events: none; /* Ngăn biểu tượng toggle chặn sự kiện click */
      color: var(--accent-color);
      transition: transform 0.3s ease;
    }

    .page-c7club__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      background-color: #3a3a3a;
      color: #ccc;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-c7club__faq-answer p {
      margin: 15px 0;
      font-size: 0.95em;
    }

    .page-c7club__faq-item.active .page-c7club__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa bất kỳ nội dung nào */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-c7club__faq-item.active .page-c7club__faq-toggle {
      transform: rotate(45deg); /* Tùy chọn: biến nó thành dấu X */
    }

    /* Lời kêu gọi hành động */
    .page-c7club__cta-section {
      text-align: center;
      background-color: var(--primary-color);
      padding: 50px 20px;
      border-radius: 8px;
      margin-top: 40px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-c7club__cta-heading {
      color: #fff;
      font-size: 2.2em;
      margin-bottom: 20px;
    }

    .page-c7club__cta-text {
      color: #fff;
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Điều chỉnh phản hồi */
    @media (max-width: 768px) {
      .page-c7club__hero-heading {
        font-size: 2.2em;
      }

      .page-c7club__hero-description {
        font-size: 1.1em;
      }

      .page-c7club__title {
        font-size: 2em;
      }

      .page-c7club__subtitle {
        font-size: 1.5em;
      }

      .page-c7club__product-grid {
        grid-template-columns: 1fr;
      }

      .page-c7club__promotion-list {
        grid-template-columns: 1fr;
      }

      .page-c7club__promotion-item {
        padding: 15px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-c7club__info-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      }
      
      .page-c7club__info-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-c7club__floating-buttons {
        flex-direction: row;
        padding: 10px 0;
      }

      .page-c7club__button {
        padding: 10px 15px;
        font-size: 1em;
      }
      
      .page-c7club__product-image,
      .page-c7club__info-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      
      .page-c7club__faq-question {
        font-size: 1em;
        padding: 12px 15px;
      }
      
      .page-c7club__faq-answer {
        padding: 0 10px;
      }
      
      .page-c7club__faq-item.active .page-c7club__faq-answer {
        padding: 15px 10px !important;
      }
    }

    @media (max-width: 480px) {
      .page-c7club__hero-heading {
        font-size: 1.8em;
      }

      .page-c7club__hero-description {
        font-size: 1em;
      }

      .page-c7club__title {
        font-size: 1.8em;
      }
    }