:root {
      --page-win18-primary-color: #e44d26; /* Màu cam đỏ */
      --page-win18-secondary-color: #f7931e; /* Màu cam */
      --page-win18-dark-color: #333;
      --page-win18-light-color: #f8f8f8;
      --page-win18-text-color: #333;
      --page-win18-white: #ffffff;
      --page-win18-gray: #666;
      --page-win18-accent-color: #ffcc00; /* Màu vàng nhấn */
      --header-offset: 122px; /* Fallback value, actual value from shared.css */
    }

    .page-win18 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-win18-text-color);
      background-color: var(--page-win18-light-color);
      padding-top: var(--header-offset, 122px); /* Fallback if shared.css doesn't set body padding-top */
    }

    .page-win18__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: var(--page-win18-white);
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      box-sizing: border-box;
    }

    .page-win18__hero-section {
      background: linear-gradient(135deg, var(--page-win18-primary-color) 0%, var(--page-win18-secondary-color) 100%);
      color: var(--page-win18-white);
      text-align: center;
      padding: 60px 20px;
      border-radius: 0;
      margin-bottom: 0;
      box-shadow: none;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 300px;
      padding-top: 10px; /* Small decorative top padding, body handles main offset */
    }

    .page-win18__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      font-weight: bold;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
      color: var(--page-win18-white);
    }

    .page-win18__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      color: var(--page-win18-white);
    }

    .page-win18__promo-button {
      display: inline-block;
      background-color: var(--page-win18-accent-color);
      color: var(--page-win18-dark-color);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      cursor: pointer;
      border: none;
    }

    .page-win18__promo-button:hover {
      background-color: #ffdb4d;
      transform: translateY(-2px);
    }

    .page-win18__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-win18__floating-button {
      background-color: var(--page-win18-primary-color);
      color: var(--page-win18-white);
      border: none;
      border-radius: 50px;
      padding: 12px 25px;
      font-size: 1em;
      font-weight: bold;
      cursor: pointer;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-align: center;
    }

    .page-win18__floating-button:hover {
      background-color: var(--page-win18-secondary-color);
      transform: translateY(-2px);
    }

    .page-win18__section-title {
      font-size: 2.2em;
      color: var(--page-win18-primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-weight: bold;
    }

    .page-win18__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      justify-content: center;
      align-items: stretch;
    }

    .page-win18__card {
      background-color: var(--page-win18-white);
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .page-win18__card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }

    .page-win18__card-image-wrapper {
      width: 100%;
      max-height: 200px;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: #eee;
    }

    .page-win18__card-image {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    .page-win18__card-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-win18__card-title {
      font-size: 1.5em;
      color: var(--page-win18-dark-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-win18__card-description {
      font-size: 0.95em;
      color: var(--page-win18-gray);
      margin-bottom: 15px;
      flex-grow: 1;
    }

    .page-win18__card-button {
      display: inline-block;
      background-color: var(--page-win18-primary-color);
      color: var(--page-win18-white);
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-size: 0.9em;
      font-weight: bold;
      transition: background-color 0.3s ease;
      cursor: pointer;
      border: none;
    }

    .page-win18__card-button:hover {
      background-color: var(--page-win18-secondary-color);
    }

    .page-win18__provider-list,
    .page-win18__payment-list,
    .page-win18__social-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-win18__provider-item,
    .page-win18__payment-item,
    .page-win18__social-item {
      background-color: #f0f0f0;
      border-radius: 8px;
      padding: 15px 25px;
      text-align: center;
      min-width: 120px;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      box-sizing: border-box;
      flex: 1 1 auto; /* Allow items to grow and shrink */
      max-width: 200px; /* Limit max width for larger screens */
    }

    .page-win18__provider-item:hover,
    .page-win18__payment-item:hover,
    .page-win18__social-item:hover {
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .page-win18__provider-name,
    .page-win18__payment-name,
    .page-win18__social-name {
      font-weight: bold;
      color: var(--page-win18-dark-color);
      font-size: 1.1em;
    }

    .page-win18__faq-section {
      background-color: var(--page-win18-white);
      padding: 40px 20px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
      box-sizing: border-box;
    }

    .page-win18__faq-item {
      border-bottom: 1px solid #eee;
      padding: 15px 0;
    }

    .page-win18__faq-item:last-child {
      border-bottom: none;
    }

    .page-win18__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      padding: 10px 0;
      transition: background-color 0.3s ease;
    }

    .page-win18__faq-question:hover {
      background-color: #f9f9f9;
    }

    .page-win18__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-win18-dark-color);
      flex-grow: 1;
      text-align: left;
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-win18__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-win18-primary-color);
      margin-left: 15px;
      pointer-events: none; /* Prevent span from blocking click on parent */
      transition: transform 0.3s ease;
    }

    .page-win18__faq-item.active .page-win18__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' visually, or '-' */
    }

    .page-win18__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-win18-gray);
      font-size: 0.95em;
      text-align: left;
    }

    .page-win18__faq-item.active .page-win18__faq-answer {
      max-height: 2000px !important; /* Sufficiently large value */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-win18__hero-title {
        font-size: 2.5em;
      }
      .page-win18__hero-description {
        font-size: 1.1em;
      }
      .page-win18__section-title {
        font-size: 2em;
      }
      .page-win18__grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .page-win18 {
        padding-top: var(--header-offset, 122px); /* Ensure padding for smaller screens */
      }
      .page-win18__hero-section {
        padding: 40px 15px;
      }
      .page-win18__hero-title {
        font-size: 2em;
      }
      .page-win18__hero-description {
        font-size: 1em;
      }
      .page-win18__promo-button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-win18__section {
        padding: 30px 15px;
      }
      .page-win18__section-title {
        font-size: 1.8em;
      }
      .page-win18__grid {
        grid-template-columns: 1fr; /* Single column layout for cards */
      }
      .page-win18__card-image-wrapper {
        max-height: 180px;
      }
      .page-win18__card-title {
        font-size: 1.3em;
      }
      .page-win18__card-description {
        font-size: 0.9em;
      }
      .page-win18__provider-list,
      .page-win18__payment-list,
      .page-win18__social-list {
        flex-direction: column;
        align-items: center;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding: 0;
        margin: 0;
      }
      .page-win18__provider-item,
      .page-win18__payment-item,
      .page-win18__social-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px 10px;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }
      .page-win18__faq-section {
        padding: 30px 15px;
      }
      .page-win18__faq-question h3 {
        font-size: 1.1em;
      }
      .page-win18__faq-answer {
        padding: 15px 10px !important;
        font-size: 0.9em;
      }
      .page-win18__floating-buttons {
        bottom: 15px;
        right: 15px;
      }
      .page-win18__floating-button {
        padding: 10px 20px;
        font-size: 0.9em;
      }
    }

    @media (max-width: 480px) {
      .page-win18__hero-title {
        font-size: 1.8em;
      }
      .page-win18__hero-description {
        font-size: 0.9em;
      }
      .page-win18__promo-button {
        padding: 10px 20px;
        font-size: 0.9em;
      }
      .page-win18__section-title {
        font-size: 1.6em;
      }
      .page-win18__card-title {
        font-size: 1.2em;
      }
      .page-win18__card-description {
        font-size: 0.85em;
      }
    }