:root {
      --page-567tv-apk-primary-color: #e44d26; /* Cam đỏ */
      --page-567tv-apk-secondary-color: #333; /* Xám đậm */
      --page-567tv-apk-accent-color: #f0ad4e; /* Vàng cam */
      --page-567tv-apk-text-color: #fff; /* Trắng */
      --page-567tv-apk-bg-color: #1a1a1a; /* Nền đen xám */
      --page-567tv-apk-card-bg: #2a2a2a; /* Nền thẻ xám */
      --page-567tv-apk-border-color: #444; /* Viền xám */
    }

    .page-567tv-apk {
      font-family: 'Arial', sans-serif;
      color: var(--page-567tv-apk-text-color);
      background-color: var(--page-567tv-apk-bg-color);
      line-height: 1.6;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-567tv-apk__section {
      padding: 40px 15px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-567tv-apk__hero-section {
      text-align: center;
      padding-top: 10px; /* Minimal top padding, relies on body padding-top for header offset */
      padding-bottom: 40px;
      background: linear-gradient(135deg, var(--page-567tv-apk-secondary-color) 0%, var(--page-567tv-apk-bg-color) 100%);
    }

    .page-567tv-apk__hero-title {
      font-size: 2.8em;
      color: var(--page-567tv-apk-primary-color);
      margin-bottom: 15px;
      line-height: 1.2;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-567tv-apk__hero-subtitle {
      font-size: 1.3em;
      color: #ccc;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-567tv-apk__download-button-group {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      margin-bottom: 40px;
    }

    .page-567tv-apk__download-button {
      background-color: var(--page-567tv-apk-primary-color);
      color: var(--page-567tv-apk-text-color);
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-size: 1.1em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .page-567tv-apk__download-button:hover {
      background-color: #c0392b;
      transform: translateY(-3px);
    }

    .page-567tv-apk__hero-image {
      max-width: 100%;
      height: auto;
      border-radius: 15px;
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
      margin-top: 30px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }

    .page-567tv-apk__section-title {
      font-size: 2.2em;
      color: var(--page-567tv-apk-primary-color);
      text-align: center;
      margin-bottom: 30px;
      padding-bottom: 10px;
      position: relative;
    }

    .page-567tv-apk__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-567tv-apk-accent-color);
      border-radius: 2px;
    }

    .page-567tv-apk__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-567tv-apk__feature-card {
      background-color: var(--page-567tv-apk-card-bg);
      padding: 25px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-567tv-apk-border-color);
      box-sizing: border-box;
    }

    .page-567tv-apk__feature-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-567tv-apk__feature-icon {
      max-width: 120px;
      height: auto;
      margin-bottom: 15px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }

    .page-567tv-apk__feature-title {
      font-size: 1.4em;
      color: var(--page-567tv-apk-primary-color);
      margin-bottom: 10px;
    }

    .page-567tv-apk__feature-description {
      color: #bbb;
      font-size: 0.95em;
    }

    .page-567tv-apk__steps-list {
      display: flex;
      flex-direction: column;
      gap: 25px;
      margin-top: 30px;
    }

    .page-567tv-apk__step-item {
      display: flex;
      align-items: flex-start;
      gap: 20px;
      background-color: var(--page-567tv-apk-card-bg);
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--page-567tv-apk-border-color);
      box-sizing: border-box;
    }

    .page-567tv-apk__step-number {
      font-size: 2em;
      font-weight: bold;
      color: var(--page-567tv-apk-accent-color);
      flex-shrink: 0;
      width: 40px;
      height: 40px;
      display: flex;
      justify-content: center;
      align-items: center;
      border: 2px solid var(--page-567tv-apk-accent-color);
      border-radius: 50%;
      background-color: rgba(240, 173, 78, 0.1);
    }

    .page-567tv-apk__step-content h3 {
      font-size: 1.3em;
      color: var(--page-567tv-apk-primary-color);
      margin-top: 0;
      margin-bottom: 8px;
    }

    .page-567tv-apk__step-content p {
      color: #bbb;
      margin-bottom: 0;
    }

    .page-567tv-apk__product-gallery {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-567tv-apk__product-item {
      background-color: var(--page-567tv-apk-card-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-567tv-apk-border-color);
      text-align: center;
      box-sizing: border-box;
    }

    .page-567tv-apk__product-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .page-567tv-apk__product-item:hover .page-567tv-apk__product-image {
      transform: scale(1.05);
    }

    .page-567tv-apk__product-info {
      padding: 15px;
    }

    .page-567tv-apk__product-title {
      font-size: 1.2em;
      color: var(--page-567tv-apk-primary-color);
      margin-bottom: 8px;
    }

    .page-567tv-apk__product-description {
      font-size: 0.9em;
      color: #bbb;
    }

    /* FAQ Section */
    .page-567tv-apk__faq-section {
      background-color: var(--page-567tv-apk-secondary-color);
    }

    .page-567tv-apk__faq-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
    }

    .page-567tv-apk__faq-item {
      background-color: var(--page-567tv-apk-card-bg);
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--page-567tv-apk-border-color);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
    }

    .page-567tv-apk__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #3a3a3a;
      border-bottom: 1px solid var(--page-567tv-apk-border-color);
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-567tv-apk__faq-question:hover {
      background-color: #4a4a4a;
    }

    .page-567tv-apk__faq-question h3 {
      margin: 0;
      font-size: 1.15em;
      color: var(--page-567tv-apk-text-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-567tv-apk__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-567tv-apk-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-567tv-apk__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: #ccc;
      font-size: 0.95em;
    }

    .page-567tv-apk__faq-item.active .page-567tv-apk__faq-question {
      border-bottom: 1px solid transparent;
    }

    .page-567tv-apk__faq-item.active .page-567tv-apk__faq-answer {
      max-height: 2000px !important; /* Sufficiently large value */
      padding: 20px !important;
      opacity: 1;
    }

    .page-567tv-apk__faq-item.active .page-567tv-apk__faq-toggle {
      transform: rotate(45deg); /* + to X, or simply rotate to - */
      content: '−'; /* This will be handled by JS */
    }

    /* Floating buttons */
    .page-567tv-apk__floating-buttons {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 15px;
      z-index: 1000;
    }

    .page-567tv-apk__floating-button {
      background-color: var(--page-567tv-apk-primary-color);
      color: var(--page-567tv-apk-text-color);
      padding: 12px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-size: 1em;
      font-weight: bold;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .page-567tv-apk__floating-button:hover {
      background-color: #c0392b;
      transform: translateY(-3px);
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-567tv-apk__hero-title {
        font-size: 2em;
      }

      .page-567tv-apk__hero-subtitle {
        font-size: 1.1em;
      }

      .page-567tv-apk__download-button-group {
        flex-direction: column;
        gap: 15px;
      }

      .page-567tv-apk__download-button {
        width: 80%;
        max-width: 300px;
        margin: 0 auto;
      }

      .page-567tv-apk__section {
        padding: 30px 10px;
      }

      .page-567tv-apk__section-title {
        font-size: 1.8em;
      }

      .page-567tv-apk__features-grid,
      .page-567tv-apk__product-gallery {
        grid-template-columns: 1fr;
      }

      .page-567tv-apk__feature-card,
      .page-567tv-apk__step-item,
      .page-567tv-apk__product-item,
      .page-567tv-apk__faq-item {
        box-sizing: border-box !important;
        width: 100% !important;
        max-width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px !important;
      }

      .page-567tv-apk__faq-question {
        padding: 15px;
      }

      .page-567tv-apk__faq-answer {
        padding: 15px !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-567tv-apk__faq-question h3 {
        font-size: 1em;
      }

      .page-567tv-apk__faq-toggle {
        font-size: 1.5em;
      }

      .page-567tv-apk__floating-buttons {
        gap: 10px;
        bottom: 15px;
      }

      .page-567tv-apk__floating-button {
        padding: 10px 20px;
        font-size: 0.9em;
      }

      .page-567tv-apk__hero-image,
      .page-567tv-apk__feature-icon,
      .page-567tv-apk__product-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-567tv-apk__hero-title {
        font-size: 1.8em;
      }

      .page-567tv-apk__hero-subtitle {
        font-size: 1em;
      }

      .page-567tv-apk__download-button {
        font-size: 1em;
        padding: 12px 25px;
      }
    }