.page-trangchuok9 {
      font-family: 'Arial', sans-serif;
      background-color: #0a0a0a; /* Đen */
      color: #ffffff; /* Trắng */
      line-height: 1.6;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-trangchuok9__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-trangchuok9__hero-section {
      text-align: center;
      padding-top: 160px; /* Đảm bảo không bị che bởi header cố định */
      padding-bottom: 40px;
      background-color: #1a1a1a;
      position: relative;
      overflow: hidden;
    }

    .page-trangchuok9__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      object-fit: contain; /* Đảm bảo hình ảnh không bị kéo giãn */
      border-radius: 8px;
    }

    .page-trangchuok9__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
    }

    .page-trangchuok9__hero-title {
      font-size: 2.8em;
      color: #FFD700; /* Vàng */
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-trangchuok9__hero-description {
      font-size: 1.2em;
      color: #e0e0e0;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-trangchuok9__cta-button {
      display: inline-block;
      background-color: #FFD700; /* Vàng */
      color: #0a0a0a; /* Đen */
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-trangchuok9__cta-button:hover {
      background-color: #ffe866;
      transform: translateY(-3px);
    }

    .page-trangchuok9__section {
      padding: 50px 0;
      background-color: #1a1a1a;
      margin-top: 20px;
      border-radius: 8px;
    }

    .page-trangchuok9__section-title {
      font-size: 2.2em;
      color: #FFD700; /* Vàng */
      text-align: center;
      margin-bottom: 40px;
      position: relative;
    }

    .page-trangchuok9__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: -10px;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: #FFD700;
      border-radius: 2px;
    }

    .page-trangchuok9__text-content {
      font-size: 1.1em;
      color: #e0e0e0;
      margin-bottom: 20px;
    }

    .page-trangchuok9__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-trangchuok9__grid-item {
      background-color: #2a2a2a;
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-trangchuok9__grid-item:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    }

    .page-trangchuok9__grid-item-image {
      width: 100%;
      max-width: 300px;
      height: auto;
      border-radius: 8px;
      margin-bottom: 15px;
      object-fit: cover;
    }

    .page-trangchuok9__grid-item-title {
      font-size: 1.5em;
      color: #FFD700;
      margin-bottom: 10px;
      text-decoration: none;
    }

    .page-trangchuok9__grid-item-title a {
      color: #FFD700;
      text-decoration: none;
    }

    .page-trangchuok9__grid-item-title a:hover {
      text-decoration: underline;
    }

    .page-trangchuok9__grid-item-description {
      color: #cccccc;
      font-size: 0.95em;
    }

    .page-trangchuok9__game-logo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 20px;
      margin-top: 30px;
      justify-items: center;
      align-items: center;
    }

    .page-trangchuok9__game-logo-item {
      background-color: #2a2a2a;
      border-radius: 8px;
      padding: 15px;
      text-align: center;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease;
      width: 100%;
      max-width: 150px; /* Giới hạn kích thước logo */
      height: 100px; /* Chiều cao cố định cho logo */
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .page-trangchuok9__game-logo-item:hover {
      transform: translateY(-5px);
    }

    .page-trangchuok9__game-logo-image {
      width: 100%;
      max-width: 120px; /* Kích thước logo bên trong */
      height: auto;
      object-fit: contain;
    }

    .page-trangchuok9__promotion-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
    }

    .page-trangchuok9__promotion-item {
      background-color: #2a2a2a;
      border-left: 5px solid #FFD700;
      padding: 20px;
      margin-bottom: 15px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .page-trangchuok9__promotion-image {
      width: 100px;
      height: 100px;
      border-radius: 8px;
      object-fit: cover;
      flex-shrink: 0;
    }

    .page-trangchuok9__promotion-content h3 {
      color: #FFD700;
      margin-top: 0;
      margin-bottom: 10px;
      font-size: 1.6em;
    }

    .page-trangchuok9__promotion-content p {
      color: #e0e0e0;
      margin-bottom: 10px;
    }

    .page-trangchuok9__promotion-content .page-trangchuok9__cta-button {
      padding: 10px 20px;
      font-size: 1em;
    }

    .page-trangchuok9__guide-step {
      background-color: #2a2a2a;
      padding: 25px;
      border-radius: 8px;
      margin-bottom: 20px;
      border-left: 4px solid #FFD700;
    }

    .page-trangchuok9__guide-step h3 {
      color: #FFD700;
      margin-top: 0;
      margin-bottom: 10px;
      font-size: 1.8em;
    }

    .page-trangchuok9__guide-step p {
      color: #e0e0e0;
      margin-bottom: 10px;
    }

    .page-trangchuok9__guide-step ol {
      color: #cccccc;
      margin-left: 20px;
      padding-left: 0;
    }

    .page-trangchuok9__guide-step li {
      margin-bottom: 8px;
      font-size: 1em;
    }

    .page-trangchuok9__faq-section {
      padding: 50px 0;
      background-color: #1a1a1a;
      margin-top: 20px;
      border-radius: 8px;
    }

    .page-trangchuok9__faq-item {
      background-color: #2a2a2a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    }

    .page-trangchuok9__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: #333333;
      color: #FFD700;
      cursor: pointer;
      font-size: 1.2em;
      font-weight: bold;
      border-bottom: 1px solid #444444;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-trangchuok9__faq-question:hover {
      background-color: #444444;
    }

    .page-trangchuok9__faq-question h3 {
      margin: 0;
      color: #FFD700;
      font-size: 1.2em;
      pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
    }

    .page-trangchuok9__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      color: #FFD700;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn toggle chặn sự kiện click */
    }

    .page-trangchuok9__faq-item.active .page-trangchuok9__faq-toggle {
      transform: rotate(45deg); /* Biến '+' thành 'x' hoặc '-' */
    }
    .page-trangchuok9__faq-item.active .page-trangchuok9__faq-toggle::before {
      content: '−' !important; /* Đổi '+' thành '-' khi active */
    }

    .page-trangchuok9__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      background-color: #2a2a2a;
      color: #e0e0e0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      font-size: 1.1em;
    }

    .page-trangchuok9__faq-item.active .page-trangchuok9__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-trangchuok9__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #FFD700; /* Vàng */
      color: #0a0a0a; /* Đen */
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      animation: page-trangchuok9__pulse 2s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-trangchuok9__floating-button:hover {
      background-color: #ffe866;
    }

    @keyframes page-trangchuok9__pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-trangchuok9__hero-section {
        padding-top: 160px; /* Giữ khoảng cách an toàn cho mobile */
      }

      .page-trangchuok9__hero-title {
        font-size: 2em;
      }

      .page-trangchuok9__hero-description {
        font-size: 1em;
      }

      .page-trangchuok9__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-trangchuok9__section-title {
        font-size: 1.8em;
      }

      .page-trangchuok9__grid {
        grid-template-columns: 1fr;
      }

      .page-trangchuok9__grid-item {
        padding: 20px;
      }

      .page-trangchuok9__grid-item-title {
        font-size: 1.3em;
      }

      .page-trangchuok9__promotion-item {
        flex-direction: column;
        text-align: center;
      }

      .page-trangchuok9__promotion-image {
        margin-bottom: 15px;
      }

      .page-trangchuok9__promotion-content h3 {
        font-size: 1.4em;
      }

      .page-trangchuok9__guide-step h3 {
        font-size: 1.5em;
      }

      .page-trangchuok9__faq-question {
        font-size: 1.1em;
        padding: 15px 20px;
      }

      .page-trangchuok9__faq-question h3 {
        font-size: 1.1em;
      }

      .page-trangchuok9__faq-answer {
        padding: 0 20px;
      }

      .page-trangchuok9__faq-item.active .page-trangchuok9__faq-answer {
        padding: 15px 20px !important;
      }

      .page-trangchuok9__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 0.95em;
      }

      /* Responsive images for all images */
      .page-trangchuok9 img {
        max-width: 100% !important;
        height: auto !important;
        display: block !important; /* Ensure block level for margin auto */
        margin-left: auto !important;
        margin-right: auto !important;
      }

      .page-trangchuok9__grid-item-image,
      .page-trangchuok9__promotion-image,
      .page-trangchuok9__game-logo-image {
        max-width: 100% !important;
        height: auto !important;
      }

      .page-trangchuok9__hero-image {
        max-width: 100% !important;
        height: auto !important;
      }

      .page-trangchuok9__game-logo-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
      }
      .page-trangchuok9__game-logo-item {
        height: 80px;
        max-width: 120px;
      }
      .page-trangchuok9__game-logo-image {
        max-width: 90px;
      }
    }