:root {
      --page-pg66app__primary-color: #e04e2a; /* Màu cam đỏ */
      --page-pg66app__secondary-color: #2a2a2a; /* Màu đen đậm */
      --page-pg66app__accent-color: #f7b731; /* Màu vàng cam */
      --page-pg66app__text-color: #ffffff;
      --page-pg66app__background-dark: #1a1a1a;
      --page-pg66app__background-light: #2c2c2c;
      --page-pg66app__border-color: #444444;
    }

    .page-pg66app {
      font-family: 'Arial', sans-serif;
      color: var(--page-pg66app__text-color);
      background-color: var(--page-pg66app__background-dark);
      line-height: 1.6;
      padding-bottom: 80px; /* Space for fixed floating button */
    }

    .page-pg66app__hero-section {
      position: relative;
      width: 100%;
      background-color: var(--page-pg66app__background-dark);
      text-align: center;
      padding-top: 10px; /* For fixed header */
    }

    .page-pg66app__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      object-fit: contain; /* Ensure image is not stretched and visible */
      border-radius: 8px;
    }

    .page-pg66app__hero-content {
      position: relative;
      z-index: 10;
      padding: 20px;
      text-align: center;
    }

    .page-pg66app__hero-title {
      font-size: 2.5em;
      color: var(--page-pg66app__primary-color);
      margin-bottom: 15px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-pg66app__hero-description {
      font-size: 1.1em;
      color: #ccc;
      margin-bottom: 25px;
    }

    .page-pg66app__cta-button {
      display: inline-block;
      background-color: var(--page-pg66app__accent-color);
      color: var(--page-pg66app__secondary-color);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-pg66app__cta-button:hover {
      background-color: var(--page-pg66app__primary-color);
      color: var(--page-pg66app__text-color);
      transform: translateY(-3px);
    }

    .page-pg66app__section {
      padding: 40px 20px;
      max-width: 1200px;
      margin: 0 auto;
      background-color: var(--page-pg66app__background-light);
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      margin-bottom: 30px;
      border: 1px solid var(--page-pg66app__border-color);
    }

    .page-pg66app__section-title {
      font-size: 2em;
      color: var(--page-pg66app__primary-color);
      text-align: center;
      margin-bottom: 30px;
      text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    }

    .page-pg66app__content-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
    }

    .page-pg66app__card {
      background-color: var(--page-pg66app__secondary-color);
      border-radius: 8px;
      padding: 25px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-pg66app__border-color);
    }

    .page-pg66app__card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
    }

    .page-pg66app__card-icon {
      width: 100%;
      max-width: 250px;
      height: auto;
      margin-bottom: 15px;
      border-radius: 5px;
    }

    .page-pg66app__card-title {
      font-size: 1.4em;
      color: var(--page-pg66app__accent-color);
      margin-bottom: 10px;
    }

    .page-pg66app__card-text {
      font-size: 0.95em;
      color: #ccc;
    }

    .page-pg66app__how-to-list {
      list-style: none;
      padding: 0;
    }

    .page-pg66app__how-to-item {
      display: flex;
      align-items: flex-start;
      margin-bottom: 20px;
      background-color: var(--page-pg66app__secondary-color);
      padding: 20px;
      border-radius: 8px;
      border: 1px solid var(--page-pg66app__border-color);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
    }

    .page-pg66app__how-to-step-number {
      background-color: var(--page-pg66app__primary-color);
      color: var(--page-pg66app__text-color);
      border-radius: 50%;
      width: 40px;
      height: 40px;
      min-width: 40px;
      display: flex;
      justify-content: center;
      align-items: center;
      font-weight: bold;
      font-size: 1.2em;
      margin-right: 15px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    }

    .page-pg66app__how-to-content h3 {
      color: var(--page-pg66app__accent-color);
      margin-top: 0;
      margin-bottom: 8px;
      font-size: 1.3em;
    }

    .page-pg66app__how-to-content p {
      color: #ccc;
      margin-bottom: 0;
    }

    .page-pg66app__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 15px;
      margin-top: 20px;
    }

    .page-pg66app__game-item {
      text-align: center;
      background-color: var(--page-pg66app__background-dark);
      padding: 10px;
      border-radius: 8px;
      border: 1px solid var(--page-pg66app__border-color);
      transition: transform 0.2s ease;
    }

    .page-pg66app__game-item:hover {
      transform: translateY(-3px);
    }

    .page-pg66app__game-image {
      width: 100%;
      max-width: 250px;
      height: auto;
      border-radius: 5px;
      margin-bottom: 8px;
    }

    .page-pg66app__game-name {
      color: var(--page-pg66app__text-color);
      font-weight: bold;
      font-size: 0.9em;
    }

    .page-pg66app__floating-button-wrapper {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      width: 90%;
      max-width: 400px;
      text-align: center;
    }

    .page-pg66app__floating-button {
      background-color: var(--page-pg66app__primary-color);
      color: var(--page-pg66app__text-color);
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
      transition: background-color 0.3s ease, transform 0.3s ease;
      display: block;
      width: 100%;
      border: none;
      cursor: pointer;
    }

    .page-pg66app__floating-button:hover {
      background-color: var(--page-pg66app__accent-color);
      color: var(--page-pg66app__secondary-color);
      transform: translateY(-3px);
    }

    .page-pg66app__faq-container {
      margin-top: 30px;
    }

    .page-pg66app__faq-item {
      margin-bottom: 10px;
      border: 1px solid var(--page-pg66app__border-color);
      border-radius: 8px;
      overflow: hidden;
      background-color: var(--page-pg66app__secondary-color);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    }

    .page-pg66app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--page-pg66app__background-light);
      color: var(--page-pg66app__text-color);
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-pg66app__faq-question:hover {
      background-color: #3a3a3a;
    }

    .page-pg66app__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-pg66app__accent-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-pg66app__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click event */
      color: var(--page-pg66app__primary-color);
    }

    .page-pg66app__faq-item.active .page-pg66app__faq-toggle {
      transform: rotate(45deg);
    }

    .page-pg66app__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: #ccc;
      font-size: 0.95em;
    }

    .page-pg66app__faq-item.active .page-pg66app__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-pg66app__hero-title {
        font-size: 1.8em;
      }

      .page-pg66app__hero-description {
        font-size: 1em;
      }

      .page-pg66app__cta-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      .page-pg66app__section {
        padding: 30px 15px;
        margin-bottom: 20px;
      }

      .page-pg66app__section-title {
        font-size: 1.8em;
        margin-bottom: 25px;
      }

      .page-pg66app__how-to-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 15px;
      }

      .page-pg66app__how-to-step-number {
        margin-right: 0;
        margin-bottom: 10px;
      }

      .page-pg66app__how-to-content h3 {
        font-size: 1.2em;
      }

      .page-pg66app__game-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      }

      .page-pg66app__floating-button {
        font-size: 1em;
        padding: 12px 20px;
      }

      .page-pg66app__card-icon,
      .page-pg66app__game-image,
      .page-pg66app__hero-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
    }

    @media (max-width: 480px) {
      .page-pg66app__hero-title {
        font-size: 1.5em;
      }

      .page-pg66app__hero-description {
        font-size: 0.9em;
      }

      .page-pg66app__section-title {
        font-size: 1.5em;
      }

      .page-pg66app__game-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }