/* Tổng quan */
    .page-hay88app {
      font-family: 'Arial', sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f4f7f6;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-hay88app__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-hay88app__section {
      background-color: #ffffff;
      margin-bottom: 30px;
      padding: 30px;
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    }

    .page-hay88app__heading {
      color: #0056b3; /* Màu xanh đậm cho tiêu đề */
      text-align: center;
      margin-bottom: 25px;
      font-size: 2.2em;
      font-weight: bold;
    }

    .page-hay88app__sub-heading {
      color: #007bff; /* Màu xanh dương */
      text-align: center;
      margin-bottom: 20px;
      font-size: 1.8em;
      font-weight: 600;
    }

    .page-hay88app__text-center {
      text-align: center;
    }

    /* Hero Section */
    .page-hay88app__hero-section {
      background-color: #007bff; /* Nền xanh */
      color: #fff;
      padding: 10px 0 60px; /* padding-top cho fixed header */
      text-align: center;
      position: relative;
      overflow: hidden;
      border-radius: 0 0 20px 20px;
      margin-bottom: 30px;
    }

    .page-hay88app__hero-banner {
      width: 100%;
      height: auto;
      max-width: 100%;
      display: block;
      margin: 0 auto 20px;
      border-radius: 10px;
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    }

    .page-hay88app__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      line-height: 1.2;
      font-weight: 800;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-hay88app__hero-description {
      font-size: 1.3em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.5;
    }

    .page-hay88app__cta-button {
      display: inline-block;
      background-color: #ffc107; /* Màu vàng nổi bật */
      color: #333;
      padding: 15px 35px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
      cursor: pointer; /* Để trông giống nút */
      border: none; /* Đảm bảo không có border mặc định */
    }

    .page-hay88app__cta-button:hover {
      background-color: #e0a800;
      transform: translateY(-3px);
    }

    /* Floating Login Button */
    .page-hay88app__floating-button-wrapper {
      position: fixed;
      bottom: 20px;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: center;
      z-index: 1000;
      padding: 0 20px;
      box-sizing: border-box;
    }

    .page-hay88app__floating-button {
      background-color: #28a745; /* Màu xanh lá cây nổi bật */
      color: #fff;
      padding: 15px 30px;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.2em;
      text-align: center;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: background-color 0.3s ease, transform 0.3s ease;
      max-width: 350px; /* Giới hạn chiều rộng */
      width: 100%;
      cursor: pointer;
    }

    .page-hay88app__floating-button:hover {
      background-color: #218838;
      transform: translateY(-3px);
    }

    /* Game Categories */
    .page-hay88app__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-hay88app__game-card {
      background-color: #f8f9fa;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
      display: flex;
      flex-direction: column;
    }

    .page-hay88app__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .page-hay88app__game-image {
      width: 100%;
      height: 200px; /* Chiều cao cố định cho hình ảnh */
      object-fit: cover;
      display: block;
      border-radius: 10px 10px 0 0;
      max-width: 100%; /* Đảm bảo hình ảnh không tràn ra ngoài */
    }

    .page-hay88app__game-title {
      font-size: 1.5em;
      color: #0056b3;
      margin: 20px 15px 10px;
      font-weight: 700;
    }

    .page-hay88app__game-description {
      font-size: 0.95em;
      color: #555;
      padding: 0 15px 15px;
      flex-grow: 1;
    }

    .page-hay88app__game-cta {
      display: inline-block;
      background-color: #007bff;
      color: #fff;
      padding: 10px 25px;
      border-radius: 30px;
      font-weight: 600;
      transition: background-color 0.3s ease;
      margin-top: auto; /* Đẩy nút xuống dưới cùng */
      cursor: pointer;
      border: none;
    }

    .page-hay88app__game-cta:hover {
      background-color: #0056b3;
    }

    /* Promotion Section */
    .page-hay88app__promo-card {
      background-color: #fff3cd; /* Nền vàng nhạt */
      border: 1px solid #ffeeba;
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    }

    .page-hay88app__promo-title {
      color: #856404; /* Màu vàng đậm */
      font-size: 1.8em;
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-hay88app__promo-text {
      color: #856404;
      font-size: 1.1em;
      margin-bottom: 20px;
    }

    /* Steps Section */
    .page-hay88app__steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-hay88app__step-item {
      background-color: #f0f8ff; /* Nền xanh nhạt */
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.07);
      transition: transform 0.3s ease;
    }

    .page-hay88app__step-item:hover {
      transform: translateY(-5px);
    }

    .page-hay88app__step-icon {
      width: 100px; /* Kích thước icon lớn hơn */
      height: 100px;
      object-fit: contain;
      margin-bottom: 15px;
      max-width: 100%;
      height: auto;
    }

    .page-hay88app__step-number {
      font-size: 2.5em;
      color: #007bff;
      font-weight: bold;
      margin-bottom: 10px;
    }

    .page-hay88app__step-title {
      font-size: 1.4em;
      color: #0056b3;
      margin-bottom: 10px;
      font-weight: 700;
    }

    .page-hay88app__step-description {
      font-size: 1em;
      color: #555;
    }

    /* FAQ Section */
    .page-hay88app__faq-list {
      margin-top: 30px;
    }

    .page-hay88app__faq-item {
      background-color: #f8f9fa;
      border: 1px solid #e0e0e0;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    }

    .page-hay88app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      background-color: #e9ecef;
      cursor: pointer;
      user-select: none;
      font-size: 1.15em;
      font-weight: 600;
      color: #343a40;
      transition: background-color 0.3s ease;
    }

    .page-hay88app__faq-question:hover {
      background-color: #dee2e6;
    }

    .page-hay88app__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      text-align: left;
      color: #343a40;
      font-size: 1.15em; /* Đảm bảo kích thước chữ nhất quán */
      pointer-events: none; /* Ngăn chặn sự kiện click trên h3 */
    }

    .page-hay88app__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn sự kiện click trên toggle */
      color: #007bff;
    }

    .page-hay88app__faq-item.active .page-hay88app__faq-toggle {
      transform: rotate(45deg);
      color: #dc3545; /* Màu đỏ khi mở */
    }

    .page-hay88app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px; /* Ban đầu padding 0 */
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: #495057;
      background-color: #fdfdfd;
      border-top: 1px solid #e0e0e0;
    }

    .page-hay88app__faq-item.active .page-hay88app__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 20px !important; /* Padding khi mở */
      opacity: 1;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-hay88app__hero-section {
        padding-top: 10px; /* Adjust for mobile fixed header */
        padding-bottom: 40px;
      }

      .page-hay88app__hero-title {
        font-size: 2em;
      }

      .page-hay88app__hero-description {
        font-size: 1em;
      }

      .page-hay88app__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-hay88app__floating-button {
        padding: 12px 20px;
        font-size: 1em;
        max-width: 90%;
      }

      .page-hay88app__container {
        padding: 15px;
      }

      .page-hay88app__section {
        padding: 20px;
      }

      .page-hay88app__heading {
        font-size: 1.8em;
      }

      .page-hay88app__sub-heading {
        font-size: 1.5em;
      }

      .page-hay88app__game-grid {
        grid-template-columns: 1fr;
      }

      .page-hay88app__step-item {
        padding: 20px;
      }

      .page-hay88app__step-number {
        font-size: 2em;
      }

      .page-hay88app__step-title {
        font-size: 1.2em;
      }

      .page-hay88app__faq-question {
        font-size: 1em;
        padding: 15px;
      }

      .page-hay88app__faq-question h3 {
        font-size: 1em;
      }

      .page-hay88app__faq-answer {
        padding: 0 15px;
      }

      .page-hay88app__faq-item.active .page-hay88app__faq-answer {
        padding: 15px 15px !important;
      }

      /* Responsive image optimization */
      .page-hay88app img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-hay88app__game-image {
        max-width: 100% !important;
        height: auto !important; /* allow auto height for smaller screens */
      }
      .page-hay88app__step-icon {
        max-width: 100% !important;
        height: auto !important;
      }
    }