:root {
      --page-nohu78-primary-color: #f39c12; /* Màu cam nổi bật */
      --page-nohu78-secondary-color: #2c3e50; /* Màu xanh đậm */
      --page-nohu78-text-color: #ecf0f1; /* Màu chữ sáng */
      --page-nohu78-bg-dark: #34495e; /* Nền tối */
      --page-nohu78-bg-light: #ecf0f1; /* Nền sáng */
      --page-nohu78-accent-color: #e74c3c; /* Màu đỏ nhấn */
      --page-nohu78-border-radius: 8px;
    }

    .page-nohu78 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-nohu78-text-color);
      background-color: var(--page-nohu78-secondary-color);
      overflow-x: hidden; /* Prevent horizontal scroll */
    }

    /* Fixed Header Spacing */
    .page-nohu78__hero-section {
      padding-top: 10px; /* Desktop */
    }
    @media (max-width: 768px) {
      .page-nohu78__hero-section {
        padding-top: 10px; /* Mobile */
      }
    }

    .page-nohu78__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: var(--page-nohu78-bg-dark);
      border-radius: var(--page-nohu78-border-radius);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }
    .page-nohu78__section--light {
      background-color: var(--page-nohu78-bg-light);
      color: var(--page-nohu78-secondary-color);
    }

    .page-nohu78__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-nohu78__title {
      color: var(--page-nohu78-primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-size: 2.5em;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }
    .page-nohu78__title--light {
      color: var(--page-nohu78-secondary-color);
    }

    .page-nohu78__subtitle {
      color: var(--page-nohu78-text-color);
      text-align: center;
      margin-bottom: 20px;
      font-size: 1.5em;
    }
    .page-nohu78__subtitle--light {
      color: var(--page-nohu78-secondary-color);
    }

    .page-nohu78__text {
      font-size: 1.1em;
      text-align: justify;
      margin-bottom: 15px;
    }
    .page-nohu78__text--light {
      color: var(--page-nohu78-secondary-color);
    }

    .page-nohu78__hero-section {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, var(--page-nohu78-secondary-color), #1a2c3b);
      position: relative;
      overflow: hidden;
      border-bottom-left-radius: 20px;
      border-bottom-right-radius: 20px;
    }

    .page-nohu78__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto 20px auto;
      border-radius: var(--page-nohu78-border-radius);
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    }

    .page-nohu78__hero-heading {
      font-size: 3em;
      color: var(--page-nohu78-primary-color);
      margin-bottom: 20px;
      text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
    }

    .page-nohu78__hero-description {
      font-size: 1.3em;
      color: var(--page-nohu78-text-color);
      max-width: 800px;
      margin: 0 auto 30px auto;
    }

    .page-nohu78__button {
      display: inline-block;
      padding: 15px 30px;
      background-color: var(--page-nohu78-primary-color);
      color: white;
      text-decoration: none;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-nohu78__button:hover {
      background-color: #e67e22; /* Slightly darker orange */
      transform: translateY(-3px);
    }

    .page-nohu78__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-nohu78-accent-color);
      color: white;
      padding: 15px 25px;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.1em;
      text-decoration: none;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      animation: pulse 1.5s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-nohu78__floating-button:hover {
      background-color: #c0392b; /* Darker red */
      transform: scale(1.05);
    }

    @keyframes pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    .page-nohu78__floating-button-icon {
      font-size: 1.5em;
    }

    .page-nohu78__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-nohu78__game-card {
      background-color: #2c3e50; /* Slightly different dark background */
      border-radius: var(--page-nohu78-border-radius);
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding: 20px;
    }

    .page-nohu78__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    }

    .page-nohu78__game-card-image {
      width: 100%;
      max-width: 250px; /* Example size, ensuring >200px */
      height: auto;
      display: block;
      margin: 0 auto 15px auto;
      border-radius: var(--page-nohu78-border-radius);
      border: 2px solid var(--page-nohu78-primary-color);
    }

    .page-nohu78__game-card-title {
      font-size: 1.4em;
      color: var(--page-nohu78-primary-color);
      margin-bottom: 10px;
      min-height: 40px; /* Ensure consistent height */
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none; /* For link titles */
    }
    .page-nohu78__game-card-title a {
      color: var(--page-nohu78-primary-color);
      text-decoration: none;
    }
    .page-nohu78__game-card-title a:hover {
      text-decoration: underline;
    }

    .page-nohu78__game-card-description {
      font-size: 1em;
      color: var(--page-nohu78-text-color);
      margin-bottom: 15px;
    }

    .page-nohu78__steps-list {
      list-style: none;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 25px;
      margin-top: 30px;
    }

    .page-nohu78__step-item {
      background-color: var(--page-nohu78-bg-dark);
      padding: 25px;
      border-radius: var(--page-nohu78-border-radius);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      display: flex;
      align-items: flex-start;
      gap: 20px;
    }

    .page-nohu78__step-number {
      font-size: 2em;
      font-weight: bold;
      color: var(--page-nohu78-primary-color);
      background-color: var(--page-nohu78-secondary-color);
      border-radius: 50%;
      width: 50px;
      height: 50px;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-shrink: 0;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-nohu78__step-content h3 {
      font-size: 1.5em;
      color: var(--page-nohu78-primary-color);
      margin-top: 0;
      margin-bottom: 10px;
    }

    .page-nohu78__step-content p {
      font-size: 1.1em;
      color: var(--page-nohu78-text-color);
    }

    .page-nohu78__app-download {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 20px;
      margin-top: 30px;
    }

    .page-nohu78__app-download-button {
      display: flex;
      align-items: center;
      gap: 15px;
      padding: 15px 30px;
      background-color: var(--page-nohu78-primary-color);
      color: white;
      text-decoration: none;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-nohu78__app-download-button:hover {
      background-color: #e67e22;
      transform: translateY(-3px);
    }

    .page-nohu78__app-download-icon {
      font-size: 1.8em;
    }

    /* FAQ Section */
    .page-nohu78__faq-section {
      background-color: var(--page-nohu78-bg-light);
      color: var(--page-nohu78-secondary-color);
    }
    .page-nohu78__faq-title {
      color: var(--page-nohu78-secondary-color);
    }
    .page-nohu78__faq-subtitle {
      color: var(--page-nohu78-secondary-color);
    }

    .page-nohu78__faq-item {
      background-color: #fff;
      margin-bottom: 15px;
      border-radius: var(--page-nohu78-border-radius);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      overflow: hidden;
    }

    .page-nohu78__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #f8f8f8;
      border-bottom: 1px solid #eee;
      cursor: pointer;
      font-weight: bold;
      font-size: 1.1em;
      color: var(--page-nohu78-secondary-color);
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-nohu78__faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-nohu78__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-nohu78-secondary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-nohu78__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      color: var(--page-nohu78-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-nohu78__faq-item.active .page-nohu78__faq-toggle {
      transform: rotate(45deg); /* Plus to X (minus) */
    }

    .page-nohu78__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: var(--page-nohu78-secondary-color);
    }

    .page-nohu78__faq-item.active .page-nohu78__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to show content */
      padding: 20px !important;
      opacity: 1;
    }
    .page-nohu78__faq-answer p {
        margin-bottom: 10px;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-nohu78__hero-heading {
        font-size: 2.2em;
      }
      .page-nohu78__hero-description {
        font-size: 1.1em;
      }
      .page-nohu78__button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-nohu78__floating-button {
        font-size: 0.9em;
        padding: 12px 20px;
        bottom: 15px;
        right: 15px;
      }
      .page-nohu78__floating-button-icon {
        font-size: 1.2em;
      }
      .page-nohu78__game-grid {
        grid-template-columns: 1fr;
      }
      .page-nohu78__section {
        padding: 30px 15px;
      }
      .page-nohu78__title {
        font-size: 2em;
      }
      .page-nohu78__subtitle {
        font-size: 1.3em;
      }
      .page-nohu78__text {
        font-size: 1em;
      }
      .page-nohu78__step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .page-nohu78__step-number {
        margin-bottom: 15px;
      }
      .page-nohu78__faq-question {
        padding: 12px 15px;
        font-size: 1em;
      }
      .page-nohu78__faq-question h3 {
        font-size: 1.1em;
      }
      .page-nohu78__faq-answer {
        padding: 15px !important; /* Important for mobile responsive FAQ */
      }
      /* Responsive image optimization */
      .page-nohu78 img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-nohu78__game-card-image {
        max-width: 100% !important; /* Ensure images in cards are responsive */
      }
      .page-nohu78__app-download-button {
        max-width: 90%;
        text-align: center;
        justify-content: center;
      }
    }