:root {
      --page-66d-co-con-primary-bg: #1a1a2e;
      --page-66d-co-con-secondary-bg: #0f3460;
      --page-66d-co-con-text-color: #e0e0e0;
      --page-66d-co-con-accent-color: #e94560;
      --page-66d-co-con-light-text: #fff;
    }

    .page-66d-co-con {
      font-family: 'Arial', sans-serif;
      color: var(--page-66d-co-con-text-color);
      background-color: var(--page-66d-co-con-primary-bg);
      line-height: 1.6;
      padding-bottom: 80px; /* Dành chỗ cho các nút nổi */
      padding-top: 10px; /* Khoảng cách nhỏ ở trên cùng, giả sử body padding-top xử lý bù đắp header */
    }

    .page-66d-co-con__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-66d-co-con__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: var(--page-66d-co-con-secondary-bg);
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    .page-66d-co-con__section--hero {
      background: linear-gradient(135deg, var(--page-66d-co-con-secondary-bg) 0%, var(--page-66d-co-con-primary-bg) 100%);
      text-align: center;
      padding: 60px 20px;
      border-radius: 0;
      margin-bottom: 0;
      position: relative;
      overflow: hidden;
    }

    .page-66d-co-con__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 0;
      opacity: 0.3;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-66d-co-con__hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-66d-co-con__title {
      font-size: 3em;
      color: var(--page-66d-co-con-accent-color);
      margin-bottom: 15px;
      text-align: center;
      text-shadow: 0 0 10px rgba(233, 69, 96, 0.7);
    }

    .page-66d-co-con__subtitle {
      font-size: 1.5em;
      color: var(--page-66d-co-con-light-text);
      margin-bottom: 25px;
      text-align: center;
    }

    .page-66d-co-con__button {
      display: inline-block;
      background-color: var(--page-66d-co-con-accent-color);
      color: var(--page-66d-co-con-light-text);
      padding: 12px 30px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1.1em;
    }

    .page-66d-co-con__button:hover {
      background-color: #f76d85;
      transform: translateY(-2px);
    }

    .page-66d-co-con__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      left: 20px;
      display: flex;
      justify-content: space-between;
      gap: 15px;
      z-index: 1000;
    }

    .page-66d-co-con__floating-button {
      flex: 1;
      text-align: center;
      padding: 15px 10px;
      border-radius: 8px;
      font-size: 1.2em;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
      text-decoration: none; /* Đảm bảo không có gạch chân */
      color: var(--page-66d-co-con-light-text); /* Đảm bảo màu chữ */
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .page-66d-co-con__floating-button--register {
      background-color: #28a745; /* Màu xanh lá cho đăng ký */
    }

    .page-66d-co-con__floating-button--register:hover {
      background-color: #218838;
      transform: translateY(-2px);
    }

    .page-66d-co-con__floating-button--login {
      background-color: #007bff; /* Màu xanh dương cho đăng nhập */
    }

    .page-66d-co-con__floating-button--login:hover {
      background-color: #0056b3;
      transform: translateY(-2px);
    }

    .page-66d-co-con__heading {
      font-size: 2.2em;
      color: var(--page-66d-co-con-accent-color);
      text-align: center;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
      text-shadow: 0 0 5px rgba(233, 69, 96, 0.5);
    }

    .page-66d-co-con__heading::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-66d-co-con-light-text);
      border-radius: 2px;
    }

    .page-66d-co-con__text-content {
      font-size: 1.1em;
      margin-bottom: 20px;
      text-align: justify;
    }

    .page-66d-co-con__games-grid,
    .page-66d-co-con__promotions-grid,
    .page-66d-co-con__benefits-grid,
    .page-66d-co-con__payment-grid,
    .page-66d-co-con__providers-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-66d-co-con__game-card,
    .page-66d-co-con__promotion-item,
    .page-66d-co-con__benefit-item,
    .page-66d-co-con__payment-item,
    .page-66d-co-con__provider-item {
      background-color: var(--page-66d-co-con-primary-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      padding: 20px; /* Đảm bảo nội dung có khoảng đệm */
      box-sizing: border-box; /* Bao gồm padding trong tính toán chiều rộng */
    }

    .page-66d-co-con__game-card:hover,
    .page-66d-co-con__promotion-item:hover,
    .page-66d-co-con__benefit-item:hover,
    .page-66d-co-con__payment-item:hover,
    .page-66d-co-con__provider-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-66d-co-con__card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: 8px;
      margin-bottom: 15px;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-66d-co-con__card-title {
      font-size: 1.5em;
      color: var(--page-66d-co-con-accent-color);
      margin-bottom: 10px;
    }

    .page-66d-co-con__card-description {
      font-size: 0.95em;
      color: var(--page-66d-co-con-text-color);
    }

    .page-66d-co-con__faq-section {
      background-color: var(--page-66d-co-con-secondary-bg);
    }

    .page-66d-co-con__faq-item {
      margin-bottom: 15px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      overflow: hidden;
      background-color: var(--page-66d-co-con-primary-bg);
    }

    .page-66d-co-con__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      user-select: none;
      background-color: var(--page-66d-co-con-secondary-bg);
      color: var(--page-66d-co-con-light-text);
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-66d-co-con__faq-question h3 {
      margin: 0;
      color: inherit;
      pointer-events: none; /* Ngăn h3 can thiệp vào sự kiện click */
      flex-grow: 1;
      text-align: left;
    }

    .page-66d-co-con__faq-question:hover {
      background-color: #1a4f8a; /* Nền phụ hơi sáng hơn */
    }

    .page-66d-co-con__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn biểu tượng toggle can thiệp vào sự kiện click */
    }

    .page-66d-co-con__faq-item.active .page-66d-co-con__faq-toggle {
      transform: rotate(45deg); /* Thay đổi + thành X (hoặc xoay thành -) */
    }

    .page-66d-co-con__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      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-66d-co-con-text-color);
    }

    .page-66d-co-con__faq-item.active .page-66d-co-con__faq-answer {
      max-height: 2000px !important; /* Giá trị đủ lớn */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-66d-co-con__cta-section {
      text-align: center;
      padding: 50px 20px;
      background-color: var(--page-66d-co-con-accent-color);
      border-radius: 10px;
      margin-top: 40px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    .page-66d-co-con__cta-title {
      font-size: 2.5em;
      color: var(--page-66d-co-con-light-text);
      margin-bottom: 20px;
    }

    .page-66d-co-con__cta-description {
      font-size: 1.2em;
      color: var(--page-66d-co-con-light-text);
      margin-bottom: 30px;
    }

    .page-66d-co-con__social-links {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 15px;
      margin-top: 30px;
    }

    .page-66d-co-con__social-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: var(--page-66d-co-con-primary-bg);
      color: var(--page-66d-co-con-accent-color);
      font-size: 1.5em;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    }

    .page-66d-co-con__social-link:hover {
      background-color: var(--page-66d-co-con-accent-color);
      color: var(--page-66d-co-con-light-text);
      transform: translateY(-3px);
    }

    /* Điều chỉnh Responsive */
    @media (max-width: 768px) {
      .page-66d-co-con__title {
        font-size: 2.5em;
      }

      .page-66d-co-con__subtitle {
        font-size: 1.2em;
      }

      .page-66d-co-con__heading {
        font-size: 1.8em;
      }

      .page-66d-co-con__games-grid,
      .page-66d-co-con__promotions-grid,
      .page-66d-co-con__benefits-grid,
      .page-66d-co-con__payment-grid,
      .page-66d-co-con__providers-grid {
        grid-template-columns: 1fr;
      }

      .page-66d-co-con__game-card,
      .page-66d-co-con__promotion-item,
      .page-66d-co-con__benefit-item,
      .page-66d-co-con__payment-item,
      .page-66d-co-con__provider-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px !important;
      }

      .page-66d-co-con__games-grid,
      .page-66d-co-con__promotions-grid,
      .page-66d-co-con__benefits-grid,
      .page-66d-co-con__payment-grid,
      .page-66d-co-con__providers-grid {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        gap: 15px;
      }

      .page-66d-co-con__card-image {
        height: 180px;
      }

      .page-66d-co-con__faq-question {
        font-size: 1.1em;
        padding: 12px 15px;
      }

      .page-66d-co-con__faq-answer {
        padding: 15px 15px !important;
      }

      .page-66d-co-con__cta-title {
        font-size: 2em;
      }

      .page-66d-co-con__cta-description {
        font-size: 1em;
      }

      .page-66d-co-con__floating-buttons {
        flex-direction: column;
        bottom: 15px;
        right: 15px;
        left: 15px;
        gap: 10px;
      }
      .page-66d-co-con__floating-button {
        padding: 12px 10px;
        font-size: 1.1em;
      }

      .page-66d-co-con__text-content {
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
    }

    @media (max-width: 480px) {
      .page-66d-co-con__title {
        font-size: 2em;
      }

      .page-66d-co-con__subtitle {
        font-size: 1em;
      }

      .page-66d-co-con__heading {
        font-size: 1.6em;
      }

      .page-66d-co-con__button {
        padding: 10px 20px;
        font-size: 1em;
      }
    }