:root {
      --page-8k8-app4-primary-color: #ffcc00; /* Gold/Yellow */
      --page-8k8-app4-secondary-color: #333333; /* Dark Grey */
      --page-8k8-app4-background-dark: #1a1a1a; /* Very Dark Grey */
      --page-8k8-app4-background-light: #2c2c2c; /* Slightly Lighter Dark Grey */
      --page-8k8-app4-text-light: #ffffff; /* White */
      --page-8k8-app4-text-dark: #000000; /* Black */
      --page-8k8-app4-border-color: #555555; /* Medium Grey */
      --page-8k8-app4-accent-color: #007bff; /* Blue for external links/buttons */
    }

    .page-8k8-app4 {
      font-family: 'Arial', sans-serif;
      color: var(--page-8k8-app4-text-light);
      background-color: var(--page-8k8-app4-background-dark);
      line-height: 1.6;
      padding-top: 10px; /* Small top padding, assuming body has header offset */
    }

    .page-8k8-app4__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-8k8-app4__hero-section {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('[GALLERY:hero:1920x1080:mobile_gaming,app_interface]') no-repeat center center / cover;
      margin-bottom: 40px;
      border-radius: 10px;
    }

    .page-8k8-app4__hero-title {
      color: var(--page-8k8-app4-primary-color);
      font-size: 3em;
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-8k8-app4__hero-subtitle {
      color: var(--page-8k8-app4-text-light);
      font-size: 1.5em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-8k8-app4__cta-button {
      display: inline-block;
      background-color: var(--page-8k8-app4-primary-color);
      color: var(--page-8k8-app4-text-dark);
      padding: 15px 30px;
      border-radius: 5px;
      font-weight: bold;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    .page-8k8-app4__cta-button:hover {
      background-color: #ffd700; /* Slightly brighter gold */
      transform: translateY(-2px);
    }

    .page-8k8-app4__section-title {
      color: var(--page-8k8-app4-primary-color);
      font-size: 2.5em;
      text-align: center;
      margin-bottom: 30px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    .page-8k8-app4__content-section {
      background-color: var(--page-8k8-app4-background-light);
      padding: 40px 20px;
      margin-bottom: 40px;
      border-radius: 10px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    }

    .page-8k8-app4__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-8k8-app4__feature-card {
      background-color: var(--page-8k8-app4-background-dark);
      padding: 25px;
      border-radius: 8px;
      text-align: center;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
      border: 1px solid var(--page-8k8-app4-border-color);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-8k8-app4__feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-8k8-app4__feature-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      object-fit: contain;
      border-radius: 5px;
    }

    .page-8k8-app4__feature-title {
      color: var(--page-8k8-app4-primary-color);
      font-size: 1.4em;
      margin-bottom: 10px;
    }

    .page-8k8-app4__feature-description {
      color: var(--page-8k8-app4-text-light);
      font-size: 0.95em;
    }

    .page-8k8-app4__image-full {
      width: 100%;
      height: auto;
      border-radius: 10px;
      margin: 30px 0;
      object-fit: cover;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    }

    .page-8k8-app4__text-block {
      margin-bottom: 20px;
      color: var(--page-8k8-app4-text-light);
    }

    .page-8k8-app4__text-block h3 {
      color: var(--page-8k8-app4-primary-color);
      font-size: 1.8em;
      margin-bottom: 15px;
    }

    .page-8k8-app4__text-block p {
      margin-bottom: 10px;
    }

    .page-8k8-app4__list {
      list-style: none;
      padding: 0;
      margin-top: 20px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 15px;
    }

    .page-8k8-app4__list-item {
      background-color: var(--page-8k8-app4-background-dark);
      padding: 15px 20px;
      border-radius: 8px;
      border-left: 5px solid var(--page-8k8-app4-primary-color);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      display: flex;
      align-items: center;
      box-sizing: border-box;
    }

    .page-8k8-app4__list-item::before {
      content: "✓";
      color: var(--page-8k8-app4-primary-color);
      font-weight: bold;
      margin-right: 10px;
      font-size: 1.2em;
    }

    .page-8k8-app4__faq-section {
      background-color: var(--page-8k8-app4-background-light);
      padding: 40px 20px;
      margin-bottom: 40px;
      border-radius: 10px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    }

    .page-8k8-app4__faq-item {
      background-color: var(--page-8k8-app4-background-dark);
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--page-8k8-app4-border-color);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-8k8-app4__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      cursor: pointer;
      user-select: none;
      background-color: var(--page-8k8-app4-background-dark);
      color: var(--page-8k8-app4-primary-color);
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-8k8-app4__faq-question:hover {
      background-color: #2a2a2a;
    }

    .page-8k8-app4__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      pointer-events: none; /* Prevent h3 from blocking click on parent div */
      color: var(--page-8k8-app4-primary-color);
    }

    .page-8k8-app4__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click on parent div */
    }

    .page-8k8-app4__faq-item.active .page-8k8-app4__faq-toggle {
      transform: rotate(45deg);
    }

    .page-8k8-app4__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: #222222;
      color: var(--page-8k8-app4-text-light);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      box-sizing: border-box;
    }

    .page-8k8-app4__faq-item.active .page-8k8-app4__faq-answer {
      max-height: 2000px !important; /* Sufficiently large value */
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-8k8-app4__external-link {
      color: var(--page-8k8-app4-accent-color);
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
    }

    .page-8k8-app4__external-link:hover {
      color: #0056b3;
      text-decoration: underline;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-8k8-app4__hero-section {
        padding: 40px 15px;
      }

      .page-8k8-app4__hero-title {
        font-size: 2.2em;
      }

      .page-8k8-app4__hero-subtitle {
        font-size: 1.2em;
      }

      .page-8k8-app4__section-title {
        font-size: 2em;
      }

      .page-8k8-app4__features-grid {
        grid-template-columns: 1fr;
      }

      .page-8k8-app4__list {
        padding: 0;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-8k8-app4__list-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 12px 15px;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-8k8-app4__faq-question {
        font-size: 1.1em;
        padding: 15px 15px;
      }

      .page-8k8-app4__faq-answer {
        padding: 15px 15px;
      }

      .page-8k8-app4__feature-icon {
        width: 60px;
        height: 60px;
      }
      
      .page-8k8-app4__image-full {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
    }

    @media (max-width: 480px) {
      .page-8k8-app4__hero-title {
        font-size: 1.8em;
      }

      .page-8k8-app4__hero-subtitle {
        font-size: 1em;
      }

      .page-8k8-app4__section-title {
        font-size: 1.8em;
      }

      .page-8k8-app4__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }
    }