:root {
      --page-win-18-primary-color: #ffcc00; /* Vàng sáng */
      --page-win-18-secondary-color: #007bff; /* Xanh dương */
      --page-win-18-dark-bg: #0a192f; /* Nền tối */
      --page-win-18-text-color: #e0e0e0; /* Màu chữ sáng */
      --page-win-18-card-bg: #1a2a40; /* Nền thẻ */
      --page-win-18-border-color: #33475b; /* Màu viền */
      --page-win-18-hover-color: #ffd700; /* Vàng đậm khi hover */
    }

    .page-win-18 {
      font-family: 'Arial', sans-serif;
      background-color: var(--page-win-18-dark-bg);
      color: var(--page-win-18-text-color);
      line-height: 1.6;
      padding-top: 10px; /* Adjust for fixed header, small decorative top padding */
    }

    .page-win-18__keyword-highlight {
      color: var(--page-win-18-primary-color);
      font-weight: bold;
    }

    .page-win-18__strong-keyword {
      color: var(--page-win-18-primary-color);
      font-weight: bold;
    }

    /* Floating Buttons */
    .page-win-18__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
      pointer-events: none; /* Allow clicks through default */
    }

    .page-win-18__register-button,
    .page-win-18__login-button {
      background-color: var(--page-win-18-primary-color);
      color: var(--page-win-18-dark-bg);
      border: none;
      padding: 12px 20px;
      border-radius: 25px;
      font-weight: bold;
      cursor: pointer;
      font-size: 16px;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      pointer-events: auto; /* Re-enable clicks for buttons */
      min-width: 120px; /* Ensure buttons are not too small */
      text-align: center;
    }

    .page-win-18__register-button:hover,
    .page-win-18__login-button:hover {
      background-color: var(--page-win-18-hover-color);
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-win-18__hero-section {
      text-align: center;
      padding: 40px 20px;
      background-color: var(--page-win-18-card-bg);
      margin-bottom: 30px;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .page-win-18__hero-title {
      font-size: 2.5em;
      margin-bottom: 15px;
      color: var(--page-win-18-text-color);
      line-height: 1.2;
    }

    .page-win-18__hero-subtitle {
      font-size: 1.2em;
      margin-bottom: 25px;
      color: #b0b0b0;
    }

    .page-win-18__hero-image {
      max-width: 100%;
      height: auto;
      border-radius: 10px;
      margin-bottom: 30px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-win-18__hero-cta {
      background-color: var(--page-win-18-dark-bg);
      padding: 20px;
      border-radius: 8px;
      display: inline-block;
      max-width: 600px;
    }

    .page-win-18__hero-cta p {
      font-size: 1.1em;
      color: var(--page-win-18-text-color);
      margin: 0;
    }

    /* General Section Styling */
    .page-win-18__section-title {
      font-size: 2em;
      text-align: center;
      margin-bottom: 40px;
      color: var(--page-win-18-text-color);
      position: relative;
      padding-bottom: 10px;
    }

    .page-win-18__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-win-18-primary-color);
      border-radius: 2px;
    }

    /* Product Display */
    .page-win-18__product-display {
      padding: 50px 20px;
    }

    .page-win-18__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-win-18__product-item {
      background-color: var(--page-win-18-card-bg);
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box;
    }

    .page-win-18__product-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
    }

    .page-win-18__product-image {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      margin-bottom: 15px;
      box-sizing: border-box;
    }

    .page-win-18__product-name {
      font-size: 1.4em;
      color: var(--page-win-18-primary-color);
      margin-bottom: 10px;
    }

    .page-win-18__product-description {
      font-size: 0.95em;
      color: #c0c0c0;
    }

    /* Promotions Section */
    .page-win-18__promotion-section {
      padding: 50px 20px;
      background-color: var(--page-win-18-dark-bg);
    }

    .page-win-18__promotion-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-win-18__promotion-card {
      background-color: var(--page-win-18-card-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box;
    }

    .page-win-18__promotion-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
    }

    .page-win-18__promotion-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      box-sizing: border-box;
    }

    .page-win-18__promotion-card h3 {
      font-size: 1.3em;
      color: var(--page-win-18-primary-color);
      padding: 15px 20px 10px;
      margin: 0;
    }

    .page-win-18__promotion-description {
      padding: 0 20px 20px;
      font-size: 0.9em;
      color: #c0c0c0;
      margin: 0;
    }

    .page-win-18__promotion-more {
      text-align: center;
      margin-top: 40px;
      font-size: 1.1em;
      color: var(--page-win-18-text-color);
    }

    /* Why Choose Section */
    .page-win-18__why-choose-section {
      padding: 50px 20px;
    }

    .page-win-18__feature-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-win-18__feature-item {
      background-color: var(--page-win-18-card-bg);
      border-radius: 10px;
      padding: 30px;
      text-align: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
      box-sizing: border-box;
    }

    .page-win-18__feature-icon {
      width: 100px;
      height: 100px;
      object-fit: contain;
      margin-bottom: 20px;
      box-sizing: border-box;
    }

    .page-win-18__feature-title {
      font-size: 1.5em;
      color: var(--page-win-18-primary-color);
      margin-bottom: 10px;
    }

    .page-win-18__feature-description {
      font-size: 0.95em;
      color: #c0c0c0;
    }

    /* Payment and Provider Sections */
    .page-win-18__payment-section,
    .page-win-18__game-provider-section {
      padding: 50px 20px;
      background-color: var(--page-win-18-card-bg);
      margin-top: 30px;
      border-radius: 10px;
    }

    .page-win-18__payment-list,
    .page-win-18__provider-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .page-win-18__payment-item,
    .page-win-18__provider-item {
      text-align: center;
      padding: 15px;
      background-color: var(--page-win-18-dark-bg);
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
      box-sizing: border-box;
    }

    .page-win-18__payment-logo,
    .page-win-18__provider-logo {
      max-width: 100px;
      height: auto;
      object-fit: contain;
      margin-bottom: 10px;
      box-sizing: border-box;
    }

    .page-win-18__payment-name,
    .page-win-18__provider-name {
      font-size: 0.9em;
      color: var(--page-win-18-text-color);
      margin: 0;
    }

    /* FAQ Section */
    .page-win-18__faq-section {
      padding: 50px 20px;
    }

    .page-win-18__faq-container {
      max-width: 800px;
      margin: 0 auto;
    }

    .page-win-18__faq-item {
      background-color: var(--page-win-18-card-bg);
      border-radius: 8px;
      margin-bottom: 15px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-win-18__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px;
      cursor: pointer;
      user-select: none;
      background-color: #2a3a50;
      transition: background-color 0.3s ease;
    }

    .page-win-18__faq-question:hover {
      background-color: #3a4a60;
    }

    .page-win-18__faq-title {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-win-18-text-color);
      pointer-events: none; /* Prevent h3 from blocking click on parent div */
    }

    .page-win-18__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-win-18-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent span from blocking click on parent div */
    }

    .page-win-18__faq-item.active .page-win-18__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' visually */
    }

    .page-win-18__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;
      background-color: var(--page-win-18-card-bg);
    }

    .page-win-18__faq-item.active .page-win-18__faq-answer {
      max-height: 2000px !important; /* Sufficiently large value */
      padding: 20px !important;
      opacity: 1;
    }

    .page-win-18__faq-answer p {
      margin: 0;
      color: #c0c0c0;
    }

    /* Final CTA Section */
    .page-win-18__cta-final {
      text-align: center;
      padding: 50px 20px;
      background-color: var(--page-win-18-card-bg);
      margin-top: 30px;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .page-win-18__cta-title {
      font-size: 2.2em;
      color: var(--page-win-18-primary-color);
      margin-bottom: 20px;
    }

    .page-win-18__cta-description {
      font-size: 1.1em;
      color: var(--page-win-18-text-color);
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-win-18__cta-buttons {
      display: flex;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
    }

    .page-win-18__cta-button {
      background-color: var(--page-win-18-primary-color);
      color: var(--page-win-18-dark-bg);
      border: none;
      padding: 15px 30px;
      border-radius: 30px;
      font-weight: bold;
      font-size: 1.1em;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      display: inline-block;
    }

    .page-win-18__cta-button:hover {
      background-color: var(--page-win-18-hover-color);
      transform: translateY(-3px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-win-18__hero-title {
        font-size: 2em;
      }

      .page-win-18__hero-subtitle {
        font-size: 1em;
      }

      .page-win-18__section-title {
        font-size: 1.8em;
      }

      .page-win-18__product-grid,
      .page-win-18__promotion-grid,
      .page-win-18__feature-list,
      .page-win-18__payment-list,
      .page-win-18__provider-list {
        grid-template-columns: 1fr;
      }

      .page-win-18__product-item,
      .page-win-18__promotion-card,
      .page-win-18__feature-item,
      .page-win-18__payment-item,
      .page-win-18__provider-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 15px !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }
      
      .page-win-18__product-grid,
      .page-win-18__promotion-grid,
      .page-win-18__feature-list,
      .page-win-18__payment-list,
      .page-win-18__provider-list {
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .page-win-18__hero-section,
      .page-win-18__product-display,
      .page-win-18__promotion-section,
      .page-win-18__why-choose-section,
      .page-win-18__payment-section,
      .page-win-18__game-provider-section,
      .page-win-18__faq-section,
      .page-win-18__cta-final {
        padding-left: 15px;
        padding-right: 15px;
      }

      .page-win-18__floating-buttons {
        bottom: 15px;
        right: 15px;
      }

      .page-win-18__register-button,
      .page-win-18__login-button {
        padding: 10px 15px;
        font-size: 14px;
        min-width: 100px;
      }

      .page-win-18__faq-question {
        padding: 15px;
      }

      .page-win-18__faq-answer {
        padding: 0 15px;
      }
      
      .page-win-18__faq-item.active .page-win-18__faq-answer {
        padding: 15px !important;
      }
    }

    @media (max-width: 480px) {
      .page-win-18__hero-title {
        font-size: 1.8em;
      }

      .page-win-18__section-title {
        font-size: 1.6em;
      }

      .page-win-18__cta-title {
        font-size: 1.8em;
      }

      .page-win-18__cta-button {
        padding: 12px 20px;
        font-size: 1em;
      }
    }