:root {
      --page-red88-primary-color: #e44d26; /* Cam đỏ */
      --page-red88-secondary-color: #f7b731; /* Vàng cam */
      --page-red88-text-color: #333; /* Văn bản chính */
      --page-red88-light-text-color: #555; /* Văn bản phụ */
      --page-red88-background-color: #f8f8f8; /* Nền nhẹ */
      --page-red88-card-background: #ffffff; /* Nền thẻ */
      --page-red88-border-color: #eee; /* Đường viền */
      --page-red88-hover-color: #c23b1a; /* Màu hover */
    }

    .page-red88 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--page-red88-text-color);
      background-color: var(--page-red88-background-color);
    }

    .page-red88__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-red88__section {
      background-color: var(--page-red88-card-background);
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      margin-bottom: 30px;
      padding: 30px;
    }

    .page-red88__hero-section {
      text-align: center;
      padding-top: 10px; /* Desktop */
      padding-bottom: 40px;
      background-color: var(--page-red88-primary-color);
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .page-red88__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px;
    }

    .page-red88__hero-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 20px;
    }

    .page-red88__hero-image {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      display: block;
      margin: 0 auto;
    }

    .page-red88__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #fff;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-red88__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: #f0f0f0;
    }

    .page-red88__button {
      display: inline-block;
      background-color: var(--page-red88-secondary-color);
      color: var(--page-red88-text-color);
      padding: 12px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-red88__button:hover {
      background-color: var(--page-red88-hover-color);
      color: #fff;
      transform: translateY(-2px);
    }

    .page-red88__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-red88-primary-color);
      color: #fff;
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      display: none; /* Hidden by default, shown on mobile */
      animation: page-red88-pulse 2s infinite;
      text-align: center;
      font-size: 1.1em;
      line-height: 1.2;
    }

    .page-red88__floating-button span {
        display: block;
        font-size: 0.8em;
        margin-top: 2px;
    }

    .page-red88__floating-button:hover {
      background-color: var(--page-red88-hover-color);
      transform: scale(1.05);
    }

    @keyframes page-red88-pulse {
      0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(228, 77, 38, 0.7); }
      70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(228, 77, 38, 0); }
      100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(228, 77, 38, 0); }
    }

    .page-red88__title {
      font-size: 2em;
      color: var(--page-red88-primary-color);
      margin-bottom: 25px;
      text-align: center;
      position: relative;
      padding-bottom: 10px;
    }

    .page-red88__title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: var(--page-red88-secondary-color);
      border-radius: 2px;
    }

    .page-red88__text-content p {
      margin-bottom: 15px;
      color: var(--page-red88-light-text-color);
    }

    .page-red88__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }

    .page-red88__game-card {
      background-color: var(--page-red88-background-color);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      text-decoration: none;
      color: var(--page-red88-text-color);
      display: flex;
      flex-direction: column;
    }

    .page-red88__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }

    .page-red88__game-card-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        height: 180px; /* Fixed height for consistency */
    }

    .page-red88__game-card-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .page-red88__game-card-content {
      padding: 15px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .page-red88__game-card-title {
      font-size: 1.2em;
      font-weight: bold;
      color: var(--page-red88-primary-color);
      margin-bottom: 10px;
    }

    .page-red88__promo-list {
      list-style: none;
      padding: 0;
    }

    .page-red88__promo-item {
      background-color: var(--page-red88-card-background);
      border: 1px solid var(--page-red88-border-color);
      border-radius: 8px;
      padding: 20px;
      margin-bottom: 15px;
      display: flex;
      align-items: center;
      box-shadow: 0 1px 5px rgba(0, 0, 0, 0.03);
    }

    .page-red88__promo-icon {
      flex-shrink: 0;
      margin-right: 15px;
      width: 80px;
      height: 80px;
      object-fit: contain;
    }

    .page-red88__promo-details h3 {
      color: var(--page-red88-primary-color);
      margin-top: 0;
      margin-bottom: 8px;
      font-size: 1.3em;
    }

    .page-red88__promo-details p {
      margin: 0;
      color: var(--page-red88-light-text-color);
    }

    .page-red88__steps-list {
      list-style: decimal;
      padding-left: 20px;
    }

    .page-red88__steps-list li {
      margin-bottom: 10px;
      color: var(--page-red88-light-text-color);
    }

    .page-red88__app-download-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
        margin-top: 20px;
        text-align: center;
    }

    .page-red88__app-download-card {
        background-color: var(--page-red88-card-background);
        border-radius: 8px;
        padding: 25px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: transform 0.3s ease;
    }

    .page-red88__app-download-card:hover {
        transform: translateY(-5px);
    }

    .page-red88__app-icon-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 15px;
        max-width: 150px;
    }

    .page-red88__app-icon {
        width: 100%;
        height: auto;
        border-radius: 15px;
        display: block;
    }

    .page-red88__app-title {
        font-size: 1.4em;
        color: var(--page-red88-primary-color);
        margin-bottom: 10px;
    }

    .page-red88__app-description {
        color: var(--page-red88-light-text-color);
        margin-bottom: 20px;
    }

    .page-red88__provider-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 20px;
        justify-items: center;
        align-items: center;
        margin-top: 20px;
    }

    .page-red88__provider-logo-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        max-width: 150px; /* Adjust based on desired logo size */
        height: 80px; /* Fixed height for consistency */
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #f0f0f0;
        border-radius: 8px;
        padding: 10px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .page-red88__provider-logo {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
        display: block;
    }

    .page-red88__faq-list {
      list-style: none;
      padding: 0;
    }

    .page-red88__faq-item {
      background-color: var(--page-red88-card-background);
      border: 1px solid var(--page-red88-border-color);
      border-radius: 8px;
      margin-bottom: 10px;
      overflow: hidden;
      box-shadow: 0 1px 5px rgba(0, 0, 0, 0.03);
    }

    .page-red88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #fff;
      border-bottom: 1px solid transparent;
      transition: background-color 0.3s ease, border-bottom-color 0.3s ease;
      color: var(--page-red88-primary-color);
      font-weight: bold;
    }

    .page-red88__faq-question:hover {
      background-color: #f5f5f5;
      border-bottom-color: var(--page-red88-border-color);
    }

    .page-red88__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-red88-primary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-red88__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
      color: var(--page-red88-secondary-color);
    }

    .page-red88__faq-item.active .page-red88__faq-toggle {
      transform: rotate(45deg); /* Change + to X or - */
    }

    .page-red88__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;
      color: var(--page-red88-light-text-color);
      opacity: 0;
    }

    .page-red88__faq-item.active .page-red88__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px !important;
      opacity: 1;
    }

    /* Mobile responsiveness */
    @media (max-width: 768px) {
      .page-red88__container {
        padding: 15px;
      }

      .page-red88__hero-section {
        padding-top: 10px; /* Mobile */
        padding-bottom: 30px;
      }

      .page-red88__hero-title {
        font-size: 2em;
      }

      .page-red88__hero-subtitle {
        font-size: 1em;
      }

      .page-red88__title {
        font-size: 1.6em;
        margin-bottom: 20px;
      }

      .page-red88__section {
        padding: 20px;
        margin-bottom: 20px;
      }

      .page-red88__game-grid {
        grid-template-columns: 1fr;
      }

      .page-red88__promo-item {
        flex-direction: column;
        text-align: center;
        padding: 15px;
      }

      .page-red88__promo-icon {
        margin-right: 0;
        margin-bottom: 15px;
      }

      .page-red88__promo-details h3 {
        font-size: 1.1em;
      }

      .page-red88__floating-button {
        display: block; /* Show on mobile */
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      .page-red88__app-download-grid {
        grid-template-columns: 1fr;
      }

      .page-red88__provider-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
      }

      .page-red88__faq-question {
        padding: 12px 15px;
      }

      .page-red88__faq-question h3 {
        font-size: 1em;
      }

      .page-red88__faq-answer {
        padding: 0 15px;
      }

      .page-red88__faq-item.active .page-red88__faq-answer {
        padding: 15px !important;
      }

      /* Ensure all images are responsive on mobile */
      .page-red88__hero-image,
      .page-red88__game-card-image,
      .page-red88__promo-icon,
      .page-red88__app-icon,
      .page-red88__provider-logo {
        max-width: 100% !important;
        height: auto !important;
      }

      .page-red88__hero-image-wrapper,
      .page-red88__game-card-image-wrapper,
      .page-red88__app-icon-wrapper,
      .page-red88__provider-logo-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }