:root {
      --page-vuabai9-primary-color: #e44d26; /* Cam đỏ */
      --page-vuabai9-secondary-color: #333;
      --page-vuabai9-accent-color: #f7b731; /* Vàng cam */
      --page-vuabai9-background-light: #f5f5f5;
      --page-vuabai9-text-dark: #333;
      --page-vuabai9-text-light: #fff;
      --page-vuabai9-border-color: #eee;
    }

    .page-vuabai9 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-vuabai9-text-dark);
      background-color: var(--page-vuabai9-background-light);
      padding-bottom: 80px; /* Space for floating button */
    }

    .page-vuabai9__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-vuabai9__hero-section {
      text-align: center;
      background-color: var(--page-vuabai9-secondary-color);
      color: var(--page-vuabai9-text-light);
      padding: 10px 0 40px 0; /* Adjusted padding-top for fixed header */
      position: relative;
      overflow: hidden;
    }

    .page-vuabai9__hero-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 20px;
    }

    .page-vuabai9__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 8px;
    }

    .page-vuabai9__hero-content {
      padding: 0 20px;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-vuabai9__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-vuabai9-accent-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-vuabai9__hero-subtitle {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: var(--page-vuabai9-text-light);
    }

    .page-vuabai9__cta-button {
      display: inline-block;
      background-color: var(--page-vuabai9-primary-color);
      color: var(--page-vuabai9-text-light);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-vuabai9__cta-button:hover {
      background-color: #ff6f40;
      transform: translateY(-2px);
    }

    .page-vuabai9__section {
      background-color: var(--page-vuabai9-text-light);
      padding: 40px 20px;
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-vuabai9__section-title {
      text-align: center;
      font-size: 2em;
      margin-bottom: 30px;
      color: var(--page-vuabai9-primary-color);
      position: relative;
    }

    .page-vuabai9__section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background-color: var(--page-vuabai9-accent-color);
      margin: 10px auto 0;
      border-radius: 2px;
    }

    .page-vuabai9__text-content {
      margin-bottom: 20px;
      font-size: 1.05em;
      line-height: 1.8;
      color: var(--page-vuabai9-secondary-color);
    }

    .page-vuabai9__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-vuabai9__game-card {
      background-color: var(--page-vuabai9-background-light);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      display: flex;
      flex-direction: column;
    }

    .page-vuabai9__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .page-vuabai9__game-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 200px; /* Fixed height for consistency */
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .page-vuabai9__game-image {
      max-width: 100%;
      height: auto;
      object-fit: cover; /* Ensures image covers the area without distortion */
      display: block;
    }

    .page-vuabai9__game-card-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-vuabai9__game-card-title {
      font-size: 1.4em;
      color: var(--page-vuabai9-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-vuabai9__game-card-description {
      font-size: 0.95em;
      color: var(--page-vuabai9-secondary-color);
      margin-bottom: 15px;
      flex-grow: 1;
    }

    .page-vuabai9__game-card-link {
      display: inline-block;
      background-color: var(--page-vuabai9-accent-color);
      color: var(--page-vuabai9-text-dark);
      padding: 10px 20px;
      border-radius: 25px;
      text-decoration: none;
      font-weight: bold;
      font-size: 0.9em;
      transition: background-color 0.3s ease;
    }

    .page-vuabai9__game-card-link:hover {
      background-color: #ffc76b;
    }

    .page-vuabai9__benefits-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }

    .page-vuabai9__benefit-item {
      background-color: var(--page-vuabai9-background-light);
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      text-align: center;
      transition: transform 0.2s ease;
    }

    .page-vuabai9__benefit-item:hover {
      transform: translateY(-3px);
    }

    .page-vuabai9__benefit-icon-wrapper {
      width: 100px;
      height: 100px;
      margin: 0 auto 15px;
      display: flex;
      justify-content: center;
      align-items: center;
      background-color: var(--page-vuabai9-primary-color);
      border-radius: 50%;
      overflow: hidden;
    }

    .page-vuabai9__benefit-icon {
      max-width: 80%;
      max-height: 80%;
      height: auto;
      display: block;
    }

    .page-vuabai9__benefit-title {
      font-size: 1.3em;
      color: var(--page-vuabai9-primary-color);
      margin-bottom: 10px;
    }

    .page-vuabai9__benefit-description {
      font-size: 0.95em;
      color: var(--page-vuabai9-secondary-color);
    }

    .page-vuabai9__how-to-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .page-vuabai9__step-card {
      background-color: var(--page-vuabai9-background-light);
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.07);
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-vuabai9__step-number {
      background-color: var(--page-vuabai9-accent-color);
      color: var(--page-vuabai9-text-dark);
      width: 50px;
      height: 50px;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 1.8em;
      font-weight: bold;
      margin-bottom: 20px;
    }

    .page-vuabai9__step-title {
      font-size: 1.5em;
      color: var(--page-vuabai9-primary-color);
      margin-bottom: 15px;
    }

    .page-vuabai9__step-description {
      font-size: 1em;
      color: var(--page-vuabai9-secondary-color);
    }

    .page-vuabai9__faq-section {
      background-color: var(--page-vuabai9-text-light);
      padding: 40px 20px;
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-vuabai9__faq-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-vuabai9__faq-item {
      border-bottom: 1px solid var(--page-vuabai9-border-color);
      margin-bottom: 10px;
    }

    .page-vuabai9__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
    }

    .page-vuabai9__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      padding: 15px;
      background-color: var(--page-vuabai9-background-light);
      border-radius: 5px;
      margin-bottom: 5px;
      transition: background-color 0.3s ease;
    }

    .page-vuabai9__faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-vuabai9__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-vuabai9-secondary-color);
      flex-grow: 1;
      text-align: left;
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-vuabai9__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-vuabai9-primary-color);
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-vuabai9__faq-item.active .page-vuabai9__faq-toggle {
      transform: rotate(45deg); /* Plus to X/minus for visual effect */
    }

    .page-vuabai9__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: var(--page-vuabai9-secondary-color);
      font-size: 0.95em;
      line-height: 1.7;
    }

    .page-vuabai9__faq-item.active .page-vuabai9__faq-answer {
      max-height: 2000px !important;
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-vuabai9__floating-promo-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-vuabai9-accent-color);
      color: var(--page-vuabai9-text-dark);
      padding: 12px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 10px;
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .page-vuabai9__floating-promo-button:hover {
      background-color: #ffc76b;
      transform: translateX(-50%) translateY(-3px);
    }

    .page-vuabai9__floating-promo-button-icon {
      width: 24px;
      height: 24px;
      vertical-align: middle;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-vuabai9__container {
        padding: 10px;
      }

      .page-vuabai9__hero-section {
        padding-top: 10px; /* Adjusted padding-top for fixed header on mobile */
      }

      .page-vuabai9__hero-title {
        font-size: 2em;
      }

      .page-vuabai9__hero-subtitle {
        font-size: 1em;
      }

      .page-vuabai9__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-vuabai9__section {
        padding: 25px 15px;
      }

      .page-vuabai9__section-title {
        font-size: 1.8em;
      }

      .page-vuabai9__game-grid {
        grid-template-columns: 1fr;
      }

      .page-vuabai9__game-image-wrapper {
        height: 180px;
      }

      .page-vuabai9__game-image {
        max-width: 100% !important;
        height: auto !important;
      }

      .page-vuabai9__benefit-icon {
        max-width: 80% !important;
        height: auto !important;
      }

      .page-vuabai9__benefit-item {
        padding: 20px;
      }

      .page-vuabai9__how-to-steps {
        grid-template-columns: 1fr;
      }

      .page-vuabai9__step-card {
        padding: 25px;
      }

      .page-vuabai9__faq-question h3 {
        font-size: 1em;
      }

      .page-vuabai9__faq-answer {
        font-size: 0.9em;
      }

      .page-vuabai9__floating-promo-button {
        width: calc(100% - 40px);
        bottom: 15px;
        padding: 10px 20px;
        font-size: 1em;
      }
    }