:root {
      --page-678win-primary-color: #e44d26; /* Một màu cam đỏ rực rỡ cho thương hiệu */
      --page-678win-secondary-color: #ff6f61; /* Màu nhạt hơn */
      --page-678win-dark-bg: #1a1a1a; /* Nền tối */
      --page-678win-light-text: #f5f5f5; /* Chữ sáng trên nền tối */
      --page-678win-accent-color: #4CAF50; /* Màu xanh lá cho thành công/CTA */
      --page-678win-border-color: #333;
      --page-678win-card-bg: #282828;
      --page-678win-padding-section: 40px 20px;
      --page-678win-border-radius: 8px;
    }

    .page-678win {
      font-family: 'Arial', sans-serif;
      color: var(--page-678win-light-text);
      background-color: var(--page-678win-dark-bg);
      line-height: 1.6;
      overflow-x: hidden;
      padding-top: var(--header-offset, 122px); /* Đảm bảo khoảng cách với header cố định */
    }

    .page-678win a {
      color: var(--page-678win-secondary-color);
      text-decoration: none;
    }

    .page-678win a:hover {
      text-decoration: underline;
    }

    .page-678win__section-title {
      font-size: 2.2em;
      color: var(--page-678win-primary-color);
      text-align: center;
      margin-bottom: 30px;
      padding: 0 15px;
      line-height: 1.2;
      font-weight: bold;
    }

    /* Nút nổi Đăng Ký/Đăng Nhập */
    .page-678win__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-678win__button {
      background-color: var(--page-678win-primary-color);
      color: var(--page-678win-light-text);
      padding: 12px 20px;
      border-radius: var(--page-678win-border-radius);
      text-align: center;
      font-weight: bold;
      font-size: 1em;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      transition: background-color 0.3s ease;
      white-space: nowrap;
      min-width: 120px;
      display: block;
    }

    .page-678win__button:hover {
      background-color: var(--page-678win-secondary-color);
      text-decoration: none;
    }

    .page-678win__button--login {
      background-color: #555;
    }

    .page-678win__button--login:hover {
      background-color: #777;
    }

    /* Phần Hero */
    .page-678win__hero-section {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      background-color: #000;
      min-height: 500px;
      overflow: hidden;
      padding-bottom: 30px; /* Thêm padding dưới để nội dung không bị sát đáy */
    }

    .page-678win__hero-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      top: 0;
      left: 0;
      z-index: 1;
      opacity: 0.4;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-678win__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px;
      max-width: 900px;
      width: 100%;
      box-sizing: border-box;
    }

    .page-678win__brand-keyword {
      font-size: 3.5em;
      color: var(--page-678win-primary-color);
      margin-bottom: 10px;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: 2px;
    }

    .page-678win__hero-tagline {
      font-size: 1.5em;
      color: var(--page-678win-light-text);
      margin-bottom: 30px;
    }

    .page-678win__cta-button {
      background-color: var(--page-678win-accent-color);
      color: white;
      padding: 15px 30px;
      border-radius: var(--page-678win-border-radius);
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      display: inline-block;
      margin-top: 20px;
    }

    .page-678win__cta-button:hover {
      background-color: #45a049;
      transform: translateY(-2px);
      text-decoration: none;
    }

    .page-678win__cta-button--small {
      padding: 10px 20px;
      font-size: 1em;
      margin-top: 15px;
    }

    .page-678win__cta-button--large {
      padding: 18px 35px;
      font-size: 1.3em;
      margin-top: 25px;
    }

    /* Danh Mục Trò Chơi */
    .page-678win__game-categories {
      padding: var(--page-678win-padding-section);
      background-color: #111;
    }

    .page-678win__category-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-678win__category-item {
      background-color: var(--page-678win-card-bg);
      border-radius: var(--page-678win-border-radius);
      overflow: hidden;
      text-align: center;
      padding-bottom: 20px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-678win__category-item:hover {
      transform: translateY(-5px);
    }

    .page-678win__category-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      margin-bottom: 15px;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-678win__category-title {
      font-size: 1.5em;
      color: var(--page-678win-primary-color);
      margin-bottom: 10px;
      padding: 0 15px;
    }

    .page-678win__category-description {
      font-size: 0.95em;
      color: #ccc;
      padding: 0 15px;
    }

    /* Phần Khuyến Mãi */
    .page-678win__promotions-section {
      padding: var(--page-678win-padding-section);
      background-color: var(--page-678win-dark-bg);
      text-align: center;
    }

    .page-678win__promotion-card {
      background-color: var(--page-678win-card-bg);
      border-radius: var(--page-678win-border-radius);
      margin: 0 auto 30px auto;
      max-width: 600px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
      box-sizing: border-box;
      padding-bottom: 20px;
    }

    .page-678win__promotion-image {
      width: 100%;
      height: 250px;
      object-fit: cover;
      margin-bottom: 15px;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-678win__promotion-title {
      font-size: 1.6em;
      color: var(--page-678win-primary-color);
      margin-bottom: 10px;
      padding: 0 15px;
    }

    .page-678win__promotion-description {
      color: #ccc;
      padding: 0 15px;
      margin-bottom: 20px;
    }

    /* Phần Giới Thiệu */
    .page-678win__about-section {
      padding: var(--page-678win-padding-section);
      background-color: #111;
      text-align: center;
    }

    .page-678win__about-text {
      max-width: 800px;
      margin: 0 auto 20px auto;
      color: #e0e0e0;
      font-size: 1.1em;
      padding: 0 15px;
    }

    .page-678win__about-text strong {
      color: var(--page-678win-primary-color);
    }

    /* Nhà Cung Cấp & Thanh Toán */
    .page-678win__providers-section,
    .page-678win__payment-methods {
      padding: var(--page-678win-padding-section);
      background-color: var(--page-678win-dark-bg);
      text-align: center;
    }

    .page-678win__provider-grid,
    .page-678win__payment-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-678win__provider-item,
    .page-678win__payment-item {
      background-color: var(--page-678win-card-bg);
      border-radius: var(--page-678win-border-radius);
      padding: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
      box-sizing: border-box;
    }

    .page-678win__provider-logo,
    .page-678win__payment-logo {
      max-width: 100%;
      height: auto;
      max-height: 80px;
      object-fit: contain;
      margin-bottom: 10px;
      box-sizing: border-box;
    }

    .page-678win__provider-name,
    .page-678win__payment-name {
      font-weight: bold;
      color: var(--page-678win-light-text);
      font-size: 1em;
    }

    /* Phần Câu Hỏi Thường Gặp (FAQ) */
    .page-678win__faq-section {
      padding: var(--page-678win-padding-section);
      background-color: #111;
    }

    .page-678win__faq-container {
      max-width: 800px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-678win__faq-item {
      background-color: var(--page-678win-card-bg);
      margin-bottom: 15px;
      border-radius: var(--page-678win-border-radius);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-678win__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #333;
      cursor: pointer;
      user-select: none;
      border-bottom: 1px solid var(--page-678win-border-color);
      box-sizing: border-box;
    }

    .page-678win__faq-question:hover {
      background-color: #444;
    }

    .page-678win__faq-question-text {
      font-size: 1.2em;
      color: var(--page-678win-light-text);
      margin: 0;
      pointer-events: none;
    }

    .page-678win__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-678win-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none;
    }

    .page-678win__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: #ccc;
      box-sizing: border-box;
    }

    .page-678win__faq-item.active .page-678win__faq-answer {
      max-height: 2000px !important;
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-678win__faq-item.active .page-678win__faq-toggle {
      transform: rotate(45deg);
    }
    
    .page-678win__faq-answer p {
      margin: 0 0 10px 0;
    }
    .page-678win__faq-answer p:last-child {
      margin-bottom: 0;
    }

    /* Thiết kế đáp ứng (Responsive Design) */
    @media (max-width: 768px) {
      .page-678win__section-title {
        font-size: 1.8em;
        margin-bottom: 25px;
      }

      .page-678win__hero-section {
        min-height: 400px;
      }

      .page-678win__brand-keyword {
        font-size: 2.8em;
      }

      .page-678win__hero-tagline {
        font-size: 1.2em;
      }

      .page-678win__cta-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      .page-678win__category-grid {
        grid-template-columns: 1fr;
        padding: 0 15px;
      }

      .page-678win__category-item {
        width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important; /* Đảm bảo ngắt từ */
        overflow-wrap: break-word !important;
      }

      .page-678win__category-title {
        font-size: 1.3em;
      }

      .page-678win__promotion-card {
        margin-bottom: 20px;
      }

      .page-678win__promotion-title {
        font-size: 1.4em;
      }

      .page-678win__about-text {
        font-size: 1em;
      }

      .page-678win__providers-section,
      .page-678win__payment-methods {
        padding: 30px 15px;
      }

      .page-678win__provider-grid,
      .page-678win__payment-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 15px;
      }

      .page-678win__provider-item,
      .page-678win__payment-item {
        padding: 15px;
        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-678win__faq-question {
        padding: 12px 15px;
      }

      .page-678win__faq-question-text {
        font-size: 1.1em;
      }

      .page-678win__faq-answer {
        padding: 0 15px;
      }

      .page-678win__faq-item.active .page-678win__faq-answer {
        padding: 15px 15px !important;
      }
    }

    @media (max-width: 480px) {
        .page-678win__brand-keyword {
            font-size: 2.2em;
        }
        .page-678win__hero-tagline {
            font-size: 1em;
        }
        .page-678win__cta-button {
            font-size: 1em;
            padding: 10px 20px;
        }
        .page-678win__floating-buttons {
            bottom: 15px;
            right: 15px;
            gap: 8px;
        }
        .page-678win__button {
            padding: 10px 15px;
            font-size: 0.9em;
            min-width: 100px;
        }
    }