:root {
      --page-nohu64-primary-color: #e44d26; /* Cam đỏ */
      --page-nohu64-secondary-color: #ff8c00; /* Cam đậm */
      --page-nohu64-accent-color: #4CAF50; /* Xanh lá */
      --page-nohu64-text-color: #333333; /* Đen xám */
      --page-nohu64-light-text-color: #ffffff; /* Trắng */
      --page-nohu64-background-color: #f8f9fa; /* Xám nhạt */
      --page-nohu64-dark-background-color: #2c3e50; /* Xanh đậm */
      --page-nohu64-border-color: #e0e0e0; /* Xám viền */
      --page-nohu64-box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .page-nohu64 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-nohu64-text-color);
      background-color: var(--page-nohu64-background-color);
      overflow-x: hidden;
    }

    .page-nohu64__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-nohu64__hero-section {
      position: relative;
      width: 100%;
      min-height: 400px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      color: var(--page-nohu64-light-text-color);
      background: var(--page-nohu64-dark-background-color);
      padding-top: 10px; /* Adjusted for fixed header */
      box-sizing: border-box;
      overflow: hidden;
    }

    .page-nohu64__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 0;
      opacity: 0.6;
    }

    .page-nohu64__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
      background-color: rgba(0, 0, 0, 0.5);
      border-radius: 10px;
      max-width: 90%;
    }

    .page-nohu64__hero-title {
      font-size: 2.5em;
      margin-bottom: 15px;
      color: var(--page-nohu64-secondary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-nohu64__hero-subtitle {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: var(--page-nohu64-light-text-color);
    }

    .page-nohu64__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-nohu64__button {
      display: inline-block;
      padding: 12px 25px;
      border-radius: 50px;
      font-size: 1em;
      font-weight: bold;
      text-align: center;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
      cursor: pointer;
      border: none;
      box-shadow: var(--page-nohu64-box-shadow);
      color: var(--page-nohu64-light-text-color);
    }

    .page-nohu64__button--primary {
      background-color: var(--page-nohu64-primary-color);
    }

    .page-nohu64__button--primary:hover {
      background-color: #c73e1f;
      transform: translateY(-2px);
    }

    .page-nohu64__button--secondary {
      background-color: var(--page-nohu64-accent-color);
    }

    .page-nohu64__button--secondary:hover {
      background-color: #408c43;
      transform: translateY(-2px);
    }

    .page-nohu64__section {
      padding: 40px 20px;
      text-align: center;
      background-color: var(--page-nohu64-light-text-color);
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: var(--page-nohu64-box-shadow);
    }

    .page-nohu64__section--dark {
      background-color: var(--page-nohu64-dark-background-color);
      color: var(--page-nohu64-light-text-color);
    }

    .page-nohu64__section-title {
      font-size: 2em;
      color: var(--page-nohu64-primary-color);
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-nohu64__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: var(--page-nohu64-secondary-color);
    }

    .page-nohu64__text-content {
      max-width: 800px;
      margin: 0 auto 30px auto;
      font-size: 1.1em;
      color: var(--page-nohu64-text-color);
    }

    .page-nohu64__text-content p {
      margin-bottom: 15px;
    }

    .page-nohu64__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-nohu64__game-item {
      background-color: var(--page-nohu64-background-color);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: var(--page-nohu64-box-shadow);
      transition: transform 0.3s ease;
      text-align: center;
      padding-bottom: 15px;
      border: 1px solid var(--page-nohu64-border-color);
    }

    .page-nohu64__game-item:hover {
      transform: translateY(-5px);
    }

    .page-nohu64__game-image {
      width: 100%;
      height: 200px; /* Min 200x200 requirement */
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-nohu64__game-title {
      font-size: 1.3em;
      color: var(--page-nohu64-dark-background-color);
      margin: 15px 10px 10px 10px;
      font-weight: bold;
    }

    .page-nohu64__promo-card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-nohu64__promo-card {
      background-color: var(--page-nohu64-light-text-color);
      border-radius: 10px;
      box-shadow: var(--page-nohu64-box-shadow);
      overflow: hidden;
      text-align: left;
      transition: transform 0.3s ease;
      border: 1px solid var(--page-nohu64-border-color);
    }

    .page-nohu64__promo-card:hover {
      transform: translateY(-5px);
    }

    .page-nohu64__promo-image {
      width: 100%;
      height: 220px; /* Min 200x200 requirement */
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-nohu64__promo-content {
      padding: 20px;
    }

    .page-nohu64__promo-title {
      font-size: 1.4em;
      color: var(--page-nohu64-primary-color);
      margin-bottom: 10px;
    }

    .page-nohu64__promo-description {
      font-size: 1em;
      color: var(--page-nohu64-text-color);
      margin-bottom: 15px;
    }

    .page-nohu64__faq-section {
      text-align: left;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-nohu64__faq-item {
      background-color: var(--page-nohu64-light-text-color);
      border: 1px solid var(--page-nohu64-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .page-nohu64__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #f0f0f0;
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      color: var(--page-nohu64-dark-background-color);
      transition: background-color 0.3s ease;
    }

    .page-nohu64__faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-nohu64__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      pointer-events: none; /* Prevents text selection from interfering with click */
      color: var(--page-nohu64-primary-color);
    }

    .page-nohu64__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      pointer-events: none; /* Prevents icon from interfering with click */
      transition: transform 0.3s ease;
    }

    .page-nohu64__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      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-nohu64-text-color);
    }

    .page-nohu64__faq-item.active .page-nohu64__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to accommodate content */
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-nohu64__faq-item.active .page-nohu64__faq-toggle {
      transform: rotate(45deg); /* Change + to X-like or - */
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-nohu64__hero-title {
        font-size: 2em;
      }

      .page-nohu64__hero-subtitle {
        font-size: 1em;
      }

      .page-nohu64__section-title {
        font-size: 1.8em;
      }

      .page-nohu64__text-content {
        font-size: 1em;
        margin: 0 auto 20px auto;
      }

      .page-nohu64__game-grid {
        grid-template-columns: 1fr;
      }

      .page-nohu64__promo-card-grid {
        grid-template-columns: 1fr;
      }

      .page-nohu64__floating-buttons {
        bottom: 15px;
        right: 15px;
        flex-direction: row;
        width: calc(100% - 30px);
        justify-content: space-around;
        gap: 5px;
      }

      .page-nohu64__button {
        padding: 10px 15px;
        font-size: 0.9em;
        flex: 1;
      }

      /* List item mobile responsiveness */
      .page-nohu64__game-item,
      .page-nohu64__promo-card,
      .page-nohu64__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 0 !important; /* Adjust if item itself has padding */
      }

      .page-nohu64__game-image,
      .page-nohu64__promo-image {
        max-width: 100% !important;
        height: auto !important; /* Allow height to adjust proportionally */
        box-sizing: border-box !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }
      .page-nohu64__container {
        padding: 10px;
      }
      .page-nohu64__faq-question,
      .page-nohu64__faq-answer {
        padding-left: 15px !important;
        padding-right: 15px !important;
      }
      .page-nohu64__faq-question h3 {
        font-size: 1em;
      }
      .page-nohu64__faq-item.active .page-nohu64__faq-answer {
        padding: 15px 15px !important;
      }
    }

    @media (max-width: 480px) {
      .page-nohu64__hero-title {
        font-size: 1.8em;
      }
      .page-nohu64__hero-subtitle {
        font-size: 0.9em;
      }
      .page-nohu64__button {
        font-size: 0.8em;
        padding: 8px 10px;
      }
    }