:root {
      --page-app-ng-k-nh-n-88k-primary-color: #e44d26; /* Cam đỏ */
      --page-app-ng-k-nh-n-88k-secondary-color: #333;
      --page-app-ng-k-nh-n-88k-accent-color: #f7a000; /* Vàng cam */
      --page-app-ng-k-nh-n-88k-text-light: #fff;
      --page-app-ng-k-nh-n-88k-text-dark: #333;
      --page-app-ng-k-nh-n-88k-bg-light: #f4f4f4;
      --page-app-ng-k-nh-n-88k-bg-dark: #222;
      --page-app-ng-k-nh-n-88k-border-color: #ddd;
    }

    .page-app-ng-k-nh-n-88k {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-app-ng-k-nh-n-88k-text-dark);
      background-color: var(--page-app-ng-k-nh-n-88k-bg-light);
      padding-top: 10px; /* Small padding top for hero/first section */
    }

    .page-app-ng-k-nh-n-88k__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-app-ng-k-nh-n-88k__section {
      background-color: #fff;
      margin-bottom: 30px;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      box-sizing: border-box; /* Ensure padding is included in width */
    }

    .page-app-ng-k-nh-n-88k__section--dark {
      background-color: var(--page-app-ng-k-nh-n-88k-bg-dark);
      color: var(--page-app-ng-k-nh-n-88k-text-light);
      padding: 40px 30px;
    }

    .page-app-ng-k-nh-n-88k__section-title {
      text-align: center;
      color: var(--page-app-ng-k-nh-n-88k-primary-color);
      margin-bottom: 30px;
      font-size: 2.2em;
      font-weight: bold;
      line-height: 1.2;
    }

    .page-app-ng-k-nh-n-88k__section--dark .page-app-ng-k-nh-n-88k__section-title {
      color: var(--page-app-ng-k-nh-n-88k-accent-color);
    }

    .page-app-ng-k-nh-n-88k__hero-section {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, var(--page-app-ng-k-nh-n-88k-primary-color), #ff6f40);
      color: var(--page-app-ng-k-nh-n-88k-text-light);
      border-radius: 8px;
      margin-bottom: 30px;
      box-sizing: border-box;
    }

    .page-app-ng-k-nh-n-88k__hero-title {
      font-size: 3em;
      margin-bottom: 20px;
      color: #fff;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
      line-height: 1.1;
    }

    .page-app-ng-k-nh-n-88k__hero-subtitle {
      font-size: 1.4em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-app-ng-k-nh-n-88k__cta-button {
      display: inline-block;
      background-color: var(--page-app-ng-k-nh-n-88k-accent-color);
      color: var(--page-app-ng-k-nh-n-88k-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;
      cursor: pointer;
      border: none;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-app-ng-k-nh-n-88k__cta-button:hover {
      background-color: #e09000;
      transform: translateY(-2px);
    }

    .page-app-ng-k-nh-n-88k__image-wrapper {
      text-align: center;
      margin: 30px 0;
      box-sizing: border-box;
      width: 100%; /* Ensure wrapper takes full width */
      max-width: 100%; /* Ensure wrapper doesn't exceed parent */
      overflow: hidden; /* Hide overflow if image is too large */
    }

    .page-app-ng-k-nh-n-88k__image {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      display: block; /* Remove extra space below image */
      margin: 0 auto; /* Center image */
    }

    .page-app-ng-k-nh-n-88k__feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-app-ng-k-nh-n-88k__feature-item {
      background-color: var(--page-app-ng-k-nh-n-88k-bg-light);
      padding: 25px;
      border-radius: 8px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      transition: transform 0.2s ease;
      box-sizing: border-box;
      width: 100%; /* Default for grid item */
    }

    .page-app-ng-k-nh-n-88k__feature-item:hover {
      transform: translateY(-5px);
    }

    .page-app-ng-k-nh-n-88k__feature-icon {
      width: 200px; /* Min size */
      height: auto;
      margin-bottom: 15px;
      border-radius: 4px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .page-app-ng-k-nh-n-88k__feature-title {
      font-size: 1.3em;
      color: var(--page-app-ng-k-nh-n-88k-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-app-ng-k-nh-n-88k__step-list {
      list-style: none;
      padding: 0;
      counter-reset: step-counter;
      display: grid;
      grid-template-columns: 1fr; /* Default to single column */
      gap: 20px;
    }

    .page-app-ng-k-nh-n-88k__step-item {
      background-color: #fff;
      padding: 25px;
      border-left: 5px solid var(--page-app-ng-k-nh-n-88k-primary-color);
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      position: relative;
      box-sizing: border-box;
      width: 100%; /* Default for list item */
    }

    .page-app-ng-k-nh-n-88k__step-item::before {
      counter-increment: step-counter;
      content: counter(step-counter);
      position: absolute;
      left: -20px;
      top: 20px;
      background-color: var(--page-app-ng-k-nh-n-88k-primary-color);
      color: var(--page-app-ng-k-nh-n-88k-text-light);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.2em;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-app-ng-k-nh-n-88k__step-title {
      font-size: 1.4em;
      color: var(--page-app-ng-k-nh-n-88k-primary-color);
      margin-bottom: 10px;
      margin-left: 30px; /* Offset for number */
      font-weight: bold;
    }

    .page-app-ng-k-nh-n-88k__step-description {
      margin-left: 30px; /* Offset for number */
    }

    .page-app-ng-k-nh-n-88k__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-app-ng-k-nh-n-88k__game-item {
      background-color: var(--page-app-ng-k-nh-n-88k-bg-dark);
      color: var(--page-app-ng-k-nh-n-88k-text-light);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      transition: transform 0.2s ease;
      box-sizing: border-box;
      width: 100%; /* Default for grid item */
    }

    .page-app-ng-k-nh-n-88k__game-item:hover {
      transform: translateY(-5px);
    }

    .page-app-ng-k-nh-n-88k__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-app-ng-k-nh-n-88k__game-content {
      padding: 20px;
      text-align: center;
    }

    .page-app-ng-k-nh-n-88k__game-title {
      font-size: 1.3em;
      margin-bottom: 10px;
      color: var(--page-app-ng-k-nh-n-88k-accent-color);
      font-weight: bold;
    }

    /* FAQ Section Styles */
    .page-app-ng-k-nh-n-88k__faq-container {
      margin-top: 30px;
    }

    .page-app-ng-k-nh-n-88k__faq-item {
      background-color: #fff;
      border: 1px solid var(--page-app-ng-k-nh-n-88k-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
      box-sizing: border-box;
    }

    .page-app-ng-k-nh-n-88k__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #f9f9f9;
      color: var(--page-app-ng-k-nh-n-88k-secondary-color);
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-app-ng-k-nh-n-88k__faq-question:hover {
      background-color: #eee;
    }

    .page-app-ng-k-nh-n-88k__faq-question h3 {
      margin: 0;
      font-size: 1.1em; /* Adjust to match parent for better consistency */
      color: var(--page-app-ng-k-nh-n-88k-secondary-color);
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-app-ng-k-nh-n-88k__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      line-height: 1;
      transition: transform 0.3s ease;
      color: var(--page-app-ng-k-nh-n-88k-primary-color);
      pointer-events: none; /* Prevent toggle icon from blocking click on parent */
    }

    .page-app-ng-k-nh-n-88k__faq-item.active .page-app-ng-k-nh-n-88k__faq-toggle {
      transform: rotate(45deg); /* Plus to Minus visual effect */
    }

    .page-app-ng-k-nh-n-88k__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px; /* Initial padding */
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.3s ease;
      opacity: 0;
      color: var(--page-app-ng-k-nh-n-88k-text-dark);
      font-size: 0.95em;
    }

    .page-app-ng-k-nh-n-88k__faq-item.active .page-app-ng-k-nh-n-88k__faq-answer {
      max-height: 2000px !important; /* Sufficiently large height */
      padding: 20px 15px !important; /* Expanded padding */
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-app-ng-k-nh-n-88k__container {
        padding: 15px;
      }

      .page-app-ng-k-nh-n-88k__section {
        padding: 20px;
      }

      .page-app-ng-k-nh-n-88k__section-title {
        font-size: 1.8em;
      }

      .page-app-ng-k-nh-n-88k__hero-section {
        padding: 40px 15px;
      }

      .page-app-ng-k-nh-n-88k__hero-title {
        font-size: 2.2em;
      }

      .page-app-ng-k-nh-n-88k__hero-subtitle {
        font-size: 1.2em;
      }

      .page-app-ng-k-nh-n-88k__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      /* Image responsiveness for mobile */
      .page-app-ng-k-nh-n-88k__image-wrapper {
          width: 100% !important;
          max-width: 100% !important;
          overflow: hidden !important;
          box-sizing: border-box !important;
      }
      .page-app-ng-k-nh-n-88k__image {
          max-width: 100% !important;
          height: auto !important;
          box-sizing: border-box !important;
      }

      /* List item mobile responsiveness */
      .page-app-ng-k-nh-n-88k__feature-grid,
      .page-app-ng-k-nh-n-88k__step-list,
      .page-app-ng-k-nh-n-88k__game-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important; /* Ensure no extra padding on container */
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }

      .page-app-ng-k-nh-n-88k__feature-item,
      .page-app-ng-k-nh-n-88k__step-item,
      .page-app-ng-k-nh-n-88k__game-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 20px !important; /* Adjust padding for smaller screens */
        padding-right: 20px !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-app-ng-k-nh-n-88k__step-item::before {
        left: 10px;
        top: 15px;
      }

      .page-app-ng-k-nh-n-88k__step-title,
      .page-app-ng-k-nh-n-88k__step-description {
        margin-left: 40px; /* Adjust for smaller number position */
      }

      .page-app-ng-k-nh-n-88k__faq-question {
        padding: 12px 15px;
        font-size: 1em;
      }

      .page-app-ng-k-nh-n-88k__faq-question h3 {
        font-size: 1em;
      }

      .page-app-ng-k-nh-n-88k__faq-answer {
        font-size: 0.9em;
        padding: 15px 15px !important; /* Adjust padding for mobile */
      }
    }

    @media (min-width: 769px) {
      .page-app-ng-k-nh-n-88k__step-list {
        grid-template-columns: repeat(2, 1fr); /* Two columns on larger screens */
      }
    }