:root {
      --page-12brt--primary-color: #e74c3c; /* Đỏ rực */
      --page-12brt--secondary-color: #f39c12; /* Cam */
      --page-12brt--dark-bg: #1a1a2e; /* Nền tối */
      --page-12brt--light-bg: #21213e; /* Nền sáng hơn */
      --page-12brt--text-color: #ecf0f1; /* Trắng xám */
      --page-12brt--text-light: #ffffff; /* Trắng tinh */
      --page-12brt--accent-color: #3498db; /* Xanh dương */
      --page-12brt--border-color: rgba(255, 255, 255, 0.1);
      --header-offset: 122px; /* Fallback value for header height */
    }

    .page-12brt {
      font-family: 'Arial', sans-serif;
      background-color: var(--page-12brt--dark-bg);
      color: var(--page-12brt--text-color);
      line-height: 1.6;
      padding-top: var(--header-offset, 122px); /* Fallback for header offset */
    }

    .page-12brt__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-12brt__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: var(--page-12brt--light-bg);
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      text-align: center;
    }

    .page-12brt__section--hero {
      background: linear-gradient(135deg, var(--page-12brt--dark-bg) 0%, #0f0f1a 100%);
      padding: 60px 20px;
      text-align: center;
      position: relative;
      overflow: hidden;
      margin-top: 10px; /* Small decorative top margin */
    }

    .page-12brt__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.3;
      z-index: 0;
    }

    .page-12brt__hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-12brt__title {
      color: var(--page-12brt--primary-color);
      font-size: 2.8em;
      margin-bottom: 15px;
      text-shadow: 0 0 10px rgba(231, 76, 60, 0.7);
      text-align: center; /* Brand keyword centered */
      word-wrap: break-word;
    }

    .page-12brt__subtitle {
      color: var(--page-12brt--text-light);
      font-size: 1.5em;
      margin-bottom: 30px;
      word-wrap: break-word;
    }

    .page-12brt__button {
      display: inline-block;
      background-color: var(--page-12brt--primary-color);
      color: var(--page-12brt--text-light);
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      cursor: pointer;
      border: none;
      font-size: 1em;
    }

    .page-12brt__button:hover {
      background-color: #c0392b;
      transform: translateY(-2px);
    }

    .page-12brt__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-12brt__floating-button {
      background-color: var(--page-12brt--secondary-color);
      color: var(--page-12brt--text-light);
      padding: 10px 20px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
      transition: background-color 0.3s ease, transform 0.2s ease;
      cursor: pointer;
      border: none;
      font-size: 1em;
    }

    .page-12brt__floating-button:hover {
      background-color: #e67e22;
      transform: translateY(-3px);
    }

    .page-12brt__heading {
      color: var(--page-12brt--secondary-color);
      font-size: 2em;
      margin-bottom: 25px;
      text-shadow: 0 0 8px rgba(243, 156, 18, 0.5);
      word-wrap: break-word;
    }

    .page-12brt__text {
      color: var(--page-12brt--text-color);
      font-size: 1.1em;
      margin-bottom: 15px;
      word-wrap: break-word;
    }

    .page-12brt__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
      justify-content: center;
      align-items: stretch;
    }

    .page-12brt__feature-card {
      background-color: var(--page-12brt--dark-bg);
      padding: 25px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      align-items: center;
      word-wrap: break-word;
    }

    .page-12brt__feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    }

    .page-12brt__feature-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      object-fit: contain;
      max-width: 100%;
      height: auto;
    }

    .page-12brt__feature-title {
      color: var(--page-12brt--primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
      word-wrap: break-word;
    }

    .page-12brt__feature-description {
      color: var(--page-12brt--text-color);
      font-size: 0.95em;
      word-wrap: break-word;
    }

    .page-12brt__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 30px;
      justify-content: center; /* Product display centered */
    }

    .page-12brt__game-card {
      background-color: var(--page-12brt--dark-bg);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
    }

    .page-12brt__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    }

    .page-12brt__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%;
      height: auto;
    }

    .page-12brt__game-info {
      padding: 20px;
    }

    .page-12brt__game-title {
      color: var(--page-12brt--secondary-color);
      font-size: 1.2em;
      margin-bottom: 10px;
      word-wrap: break-word;
    }

    .page-12brt__promo-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
      justify-content: center;
    }

    .page-12brt__promo-item {
      background-color: var(--page-12brt--dark-bg);
      padding: 20px;
      border-radius: 8px;
      text-align: left;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
      border-left: 5px solid var(--page-12brt--accent-color);
      word-wrap: break-word;
      box-sizing: border-box; /* Required for list items */
    }

    .page-12brt__promo-title {
      color: var(--page-12brt--text-light);
      font-size: 1.3em;
      margin-bottom: 10px;
      word-wrap: break-word;
    }

    .page-12brt__promo-description {
      color: var(--page-12brt--text-color);
      font-size: 0.95em;
      word-wrap: break-word;
    }

    .page-12brt__faq-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
      text-align: left;
    }

    .page-12brt__faq-item {
      background-color: var(--page-12brt--dark-bg);
      margin-bottom: 10px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .page-12brt__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--page-12brt--light-bg);
      color: var(--page-12brt--text-light);
      font-size: 1.1em;
      font-weight: bold;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
      word-wrap: break-word;
    }

    .page-12brt__faq-question:hover {
      background-color: #2c2c4a;
    }

    .page-12brt__faq-question h3 {
      margin: 0;
      color: inherit;
      pointer-events: none; /* Prevent h3 from blocking click */
      flex-grow: 1;
      word-wrap: break-word;
    }

    .page-12brt__faq-toggle {
      font-size: 1.5em;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
      color: var(--page-12brt--primary-color);
    }

    .page-12brt__faq-item.active .page-12brt__faq-toggle {
      transform: rotate(45deg);
    }

    .page-12brt__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      background-color: var(--page-12brt--dark-bg);
      color: var(--page-12brt--text-color);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      text-align: left;
      word-wrap: break-word;
    }

    .page-12brt__faq-item.active .page-12brt__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-12brt__image {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      display: block;
      margin: 20px auto;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      object-fit: cover;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-12brt__title {
        font-size: 2.2em;
      }

      .page-12brt__subtitle {
        font-size: 1.2em;
      }

      .page-12brt__heading {
        font-size: 1.8em;
      }

      .page-12brt__section {
        padding: 30px 15px;
      }

      .page-12brt__features-grid,
      .page-12brt__game-grid,
      .page-12brt__promo-list {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      
      /* List items mobile responsive */
      .page-12brt__promo-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 15px !important; /* Adjust padding for smaller screens */
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-12brt__promo-list {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-12brt__faq-question {
        padding: 12px 15px;
        font-size: 1em;
      }

      .page-12brt__faq-answer {
        padding: 15px !important;
      }

      .page-12brt__floating-buttons {
        flex-direction: row;
        width: calc(100% - 40px);
        left: 20px;
        right: 20px;
        bottom: 15px;
        justify-content: space-around;
      }

      .page-12brt__floating-button {
        flex: 1;
        text-align: center;
        padding: 10px 15px;
      }
      
      .page-12brt__image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
    }

    @media (max-width: 480px) {
      .page-12brt__title {
        font-size: 1.8em;
      }

      .page-12brt__subtitle {
        font-size: 1em;
      }

      .page-12brt__heading {
        font-size: 1.5em;
      }

      .page-12brt__floating-button {
        font-size: 0.9em;
        padding: 8px 10px;
      }
    }