:root {
      --page-u888vip__primary-color: #e53e3e; /* Đỏ rực rỡ */
      --page-u888vip__secondary-color: #f6ad55; /* Cam ấm */
      --page-u888vip__dark-bg: #1a202c; /* Nền tối */
      --page-u888vip__light-bg: #edf2f7; /* Nền sáng */
      --page-u888vip__text-color: #f7fafc; /* Màu chữ sáng */
      --page-u888vip__dark-text: #2d3748; /* Màu chữ tối */
      --page-u888vip__border-color: #4a5568; /* Màu viền */
      --page-u888vip__hover-color: #c53030; /* Đỏ đậm hơn khi hover */
    }

    .page-u888vip {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-u888vip__dark-text); /* Mặc định chữ tối trên nền sáng */
      background-color: var(--page-u888vip__light-bg);
      overflow-x: hidden;
    }

    .page-u888vip__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: #ffffff;
      border-radius: 8px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      text-align: center;
    }

    .page-u888vip__section--dark {
      background-color: var(--page-u888vip__dark-bg);
      color: var(--page-u888vip__text-color);
    }

    .page-u888vip__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-u888vip__hero-section {
      background-color: var(--page-u888vip__dark-bg);
      color: var(--page-u888vip__text-color);
      padding-top: 10px; /* Adjust for fixed header */
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .page-u888vip__hero-content {
      position: relative;
      z-index: 1;
      padding: 40px 20px;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-u888vip__hero-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 20px;
    }

    .page-u888vip__hero-image {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 8px;
      max-width: 100%; /* Ensure responsiveness */
    }

    .page-u888vip__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-u888vip__primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-u888vip__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: var(--page-u888vip__text-color);
    }

    .page-u888vip__button {
      display: inline-block;
      background-color: var(--page-u888vip__primary-color);
      color: var(--page-u888vip__text-color);
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-u888vip__button:hover {
      background-color: var(--page-u888vip__hover-color);
    }

    .page-u888vip__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      background-color: var(--page-u888vip__primary-color);
      color: var(--page-u888vip__text-color);
      padding: 15px 25px;
      border-radius: 50px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      text-decoration: none;
      font-weight: bold;
      text-align: center;
      animation: page-u888vip__pulse 2s infinite;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1em;
    }

    .page-u888vip__floating-button:hover {
      background-color: var(--page-u888vip__hover-color);
      animation: none;
    }

    @keyframes page-u888vip__pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    .page-u888vip__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-u888vip__game-item {
      background-color: var(--page-u888vip__dark-bg);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      text-align: center;
      padding: 15px;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      color: var(--page-u888vip__text-color);
      text-decoration: none;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-u888vip__game-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
    }

    .page-u888vip__game-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 10px;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 120px; /* Fixed height for game images */
    }

    .page-u888vip__game-image {
      width: 100%;
      height: 100%;
      object-fit: contain; /* Ensure image fits without cropping */
      display: block;
      border-radius: 4px;
      max-width: 100%; /* Ensure responsiveness */
    }

    .page-u888vip__game-title {
      font-size: 1.1em;
      font-weight: bold;
      color: var(--page-u888vip__secondary-color);
      margin-top: 10px;
    }

    .page-u888vip__promo-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-u888vip__promo-card {
      background-color: var(--page-u888vip__light-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
      text-align: left;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      color: var(--page-u888vip__dark-text);
      display: flex;
      flex-direction: column;
    }

    .page-u888vip__promo-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    }

    .page-u888vip__promo-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 200px; /* Fixed height for promo images */
    }

    .page-u888vip__promo-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      max-width: 100%; /* Ensure responsiveness */
    }

    .page-u888vip__promo-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-u888vip__promo-title {
      font-size: 1.4em;
      margin-bottom: 10px;
      color: var(--page-u888vip__primary-color);
    }

    .page-u888vip__promo-description {
      font-size: 0.95em;
      color: var(--page-u888vip__dark-text);
      margin-bottom: 15px;
      flex-grow: 1;
    }

    .page-u888vip__promo-link {
      display: inline-block;
      color: var(--page-u888vip__primary-color);
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
    }

    .page-u888vip__promo-link:hover {
      color: var(--page-u888vip__hover-color);
      text-decoration: underline;
    }

    .page-u888vip__how-to-guide {
      text-align: left;
      padding: 20px;
    }

    .page-u888vip__guide-step {
      display: flex;
      align-items: flex-start;
      margin-bottom: 25px;
      background-color: var(--page-u888vip__light-bg);
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .page-u888vip__guide-icon-wrapper {
      flex-shrink: 0;
      margin-right: 20px;
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: var(--page-u888vip__secondary-color);
      border-radius: 50%;
      color: var(--page-u888vip__dark-bg);
      font-size: 1.8em;
      font-weight: bold;
    }
    
    .page-u888vip__guide-icon {
        width: 100%;
        height: 100%;
        object-fit: contain;
        max-width: 100%;
        border-radius: 50%; /* Make icons circular */
    }

    .page-u888vip__guide-content {
      flex-grow: 1;
    }

    .page-u888vip__guide-title {
      font-size: 1.3em;
      color: var(--page-u888vip__primary-color);
      margin-bottom: 5px;
    }

    .page-u888vip__guide-description {
      font-size: 1em;
      color: var(--page-u888vip__dark-text);
    }

    .page-u888vip__faq-section {
      text-align: left;
      background-color: var(--page-u888vip__dark-bg);
      color: var(--page-u888vip__text-color);
    }

    .page-u888vip__faq-item {
      background-color: #2d3748;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-u888vip__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      user-select: none;
      background-color: #2d3748;
      border-bottom: 1px solid var(--page-u888vip__border-color);
      transition: background-color 0.3s ease;
    }

    .page-u888vip__faq-question:hover {
      background-color: #4a5568;
    }

    .page-u888vip__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-u888vip__secondary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-u888vip__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-u888vip__primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-u888vip__faq-item.active .page-u888vip__faq-toggle {
      transform: rotate(45deg); /* Change + to X (or -) */
    }

    .page-u888vip__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: var(--page-u888vip__text-color);
      background-color: #2d3748;
    }

    .page-u888vip__faq-item.active .page-u888vip__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-u888vip__faq-answer p {
      margin-top: 0;
      margin-bottom: 10px;
    }
    .page-u888vip__faq-answer ul {
        margin-top: 0;
        margin-bottom: 10px;
        padding-left: 20px;
    }
    .page-u888vip__faq-answer li {
        margin-bottom: 5px;
    }

    .page-u888vip__h2 {
      font-size: 2em;
      color: var(--page-u888vip__primary-color);
      margin-bottom: 30px;
      text-align: center;
    }

    .page-u888vip__h3 {
      font-size: 1.5em;
      color: var(--page-u888vip__secondary-color);
      margin-bottom: 20px;
      text-align: center;
    }

    @media (max-width: 768px) {
      .page-u888vip__hero-title {
        font-size: 2em;
      }

      .page-u888vip__hero-description {
        font-size: 1em;
      }

      .page-u888vip__h2 {
        font-size: 1.6em;
      }

      .page-u888vip__h3 {
        font-size: 1.3em;
      }

      .page-u888vip__section {
        padding: 30px 15px;
      }

      .page-u888vip__game-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      }

      .page-u888vip__promo-cards {
        grid-template-columns: 1fr;
      }

      .page-u888vip__guide-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }

      .page-u888vip__guide-icon-wrapper {
        margin-right: 0;
        margin-bottom: 15px;
      }

      .page-u888vip__faq-question {
        padding: 12px 15px;
      }

      .page-u888vip__faq-question h3 {
        font-size: 1em;
      }

      .page-u888vip__faq-answer {
        padding: 0 15px;
      }

      .page-u888vip__faq-item.active .page-u888vip__faq-answer {
        padding: 15px 15px !important;
      }

      .page-u888vip__floating-button {
        padding: 12px 20px;
        font-size: 1em;
        bottom: 15px;
        right: 15px;
      }

      /* Mobile image responsive optimization */
      .page-u888vip__hero-image,
      .page-u888vip__game-image,
      .page-u888vip__promo-image,
      .page-u888vip__guide-icon {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-u888vip__hero-image-wrapper,
      .page-u888vip__game-image-wrapper,
      .page-u888vip__promo-image-wrapper,
      .page-u888vip__guide-icon-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }