:root {
      --primary-color: #e44d26; /* Màu chủ đạo: cam đỏ */
      --secondary-color: #333; /* Màu phụ: xám đậm */
      --text-color: #f8f8f8; /* Màu chữ chính: trắng nhạt */
      --background-dark: #1a1a1a; /* Nền tối */
      --background-light: #2c2c2c; /* Nền sáng hơn */
      --accent-color: #ffcc00; /* Màu nhấn: vàng */
      --border-radius: 8px; /* Bo tròn góc */
    }

    /* Phong cách cơ bản cho phạm vi page-bl-55 */
    .page-bl-55 {
      font-family: 'Arial', sans-serif;
      color: var(--text-color);
      background-color: var(--background-dark);
      line-height: 1.6;
      overflow-x: hidden; /* Ngăn cuộn ngang do các nút cố định */
      padding-top: 10px; /* Khoảng đệm nhỏ ở trên, dựa vào padding body cho offset header */
    }

    .page-bl-55__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-bl-55__section {
      padding: 60px 0;
      text-align: center;
      position: relative;
    }

    .page-bl-55__section--dark {
      background-color: var(--background-light);
    }

    .page-bl-55__heading {
      font-size: 3em;
      color: var(--primary-color);
      margin-bottom: 20px;
      text-transform: uppercase;
      font-weight: bold;
      line-height: 1.2;
    }

    .page-bl-55__subheading {
      font-size: 1.8em;
      color: var(--accent-color);
      margin-bottom: 40px;
      line-height: 1.3;
    }

    .page-bl-55__paragraph {
      font-size: 1.1em;
      margin-bottom: 20px;
      color: #ccc;
    }

    /* Phần Hero */
    .page-bl-55__hero-section {
      background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('[GALLERY:hero:1920x1080:betting,mobile,bl55,casino]') no-repeat center center / cover;
      padding: 100px 0;
      min-height: 500px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      position: relative;
    }

    .page-bl-55__hero-content {
      z-index: 1;
    }

    .page-bl-55__hero-title {
      font-size: 4.5em;
      color: #fff;
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      text-transform: uppercase;
      font-weight: 900;
      line-height: 1.1;
    }

    .page-bl-55__hero-description {
      font-size: 1.5em;
      color: #eee;
      margin-bottom: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-bl-55__button {
      display: inline-block;
      background-color: var(--primary-color);
      color: #fff;
      padding: 15px 30px;
      border-radius: var(--border-radius);
      text-decoration: none;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      user-select: none; /* Ngăn chọn văn bản khi nhấp */
    }

    .page-bl-55__button:hover {
      background-color: #ff6a00;
      transform: translateY(-3px);
    }

    /* Nút nổi */
    .page-bl-55__floating-buttons {
      position: fixed;
      right: 15px;
      top: 50%;
      transform: translateY(-50%);
      display: flex;
      flex-direction: column;
      gap: 15px;
      z-index: 1000;
    }

    .page-bl-55__floating-button {
      background-color: var(--accent-color);
      color: var(--secondary-color);
      padding: 12px 20px;
      border-radius: 50px;
      text-align: center;
      font-weight: bold;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      transition: background-color 0.3s ease, transform 0.3s ease;
      text-decoration: none;
      cursor: pointer;
      font-size: 1.1em;
      white-space: nowrap; /* Ngăn xuống dòng */
    }

    .page-bl-55__floating-button:hover {
      background-color: #ffd700;
      transform: scale(1.05);
    }

    /* Danh mục trò chơi */
    .page-bl-55__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-bl-55__game-card {
      background-color: var(--background-dark);
      border-radius: var(--border-radius);
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-sizing: border-box;
    }

    .page-bl-55__game-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    }

    .page-bl-55__game-card-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 200px; /* Chiều cao cố định */
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: #000;
    }

    .page-bl-55__game-card-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      max-width: 100% !important;
      height: auto !important;
      box-sizing: border-box !important;
    }

    .page-bl-55__game-card-content {
      padding: 20px;
    }

    .page-bl-55__game-card-title {
      font-size: 1.5em;
      color: var(--accent-color);
      margin-bottom: 10px;
      text-transform: uppercase;
      line-height: 1.2;
    }

    .page-bl-55__game-card-description {
      font-size: 0.95em;
      color: #bbb;
    }

    /* Phần Khuyến mãi */
    .page-bl-55__promotions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-bl-55__promotion-card {
      background-color: var(--background-dark);
      border-radius: var(--border-radius);
      padding: 30px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      text-align: left;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-sizing: border-box;
    }

    .page-bl-55__promotion-card-title {
      font-size: 1.6em;
      color: var(--primary-color);
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-bl-55__promotion-card-description {
      font-size: 1em;
      color: #ccc;
      margin-bottom: 20px;
    }

    /* Tính năng / Lý do chọn */
    .page-bl-55__feature-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
      list-style: none;
      padding: 0;
    }

    .page-bl-55__feature-item {
      background-color: var(--background-dark);
      border-radius: var(--border-radius);
      padding: 25px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      text-align: left;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-sizing: border-box;
    }

    .page-bl-55__feature-icon {
      margin-bottom: 15px;
      display: block;
      max-width: 100%;
      height: auto;
      object-fit: contain;
      margin-left: auto;
      margin-right: auto;
    }

    .page-bl-55__feature-title {
      font-size: 1.4em;
      color: var(--accent-color);
      margin-bottom: 10px;
      line-height: 1.2;
    }

    .page-bl-55__feature-description {
      font-size: 0.95em;
      color: #bbb;
    }

    /* Thanh toán và Nhà cung cấp */
    .page-bl-55__logo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 40px;
      justify-items: center;
      align-items: center;
    }

    .page-bl-55__logo-item {
      background-color: var(--background-dark);
      padding: 15px;
      border-radius: var(--border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
      transition: transform 0.2s ease;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 80px; /* Chiều cao đồng nhất cho logo */
      box-sizing: border-box;
      width: 100%;
    }

    .page-bl-55__logo-item:hover {
      transform: translateY(-5px);
    }

    .page-bl-55__logo-image {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      display: block;
      width: auto !important;
      height: auto !important;
      box-sizing: border-box !important;
    }

    /* Phần FAQ */
    .page-bl-55__faq-list {
      margin-top: 40px;
      text-align: left;
    }

    .page-bl-55__faq-item {
      background-color: var(--background-dark);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-bl-55__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      user-select: none;
      background-color: #2a2a2a;
      transition: background-color 0.3s ease;
    }

    .page-bl-55__faq-question:hover {
      background-color: #3a3a3a;
    }

    .page-bl-55__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--accent-color);
      pointer-events: none; /* Ngăn h3 chặn sự kiện click trên div cha */
    }

    .page-bl-55__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn toggle chặn sự kiện click trên div cha */
    }

    .page-bl-55__faq-item.active .page-bl-55__faq-toggle {
      transform: rotate(45deg); /* Trực quan hóa trạng thái mở */
    }

    .page-bl-55__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px; /* Khoảng đệm ban đầu, sẽ thay đổi khi active */
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #bbb;
      font-size: 1em;
      text-align: left;
    }

    .page-bl-55__faq-item.active .page-bl-55__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Thiết kế đáp ứng */
    @media (max-width: 992px) {
      .page-bl-55__hero-title {
        font-size: 3.5em;
      }
      .page-bl-55__hero-description {
        font-size: 1.2em;
      }
      .page-bl-55__heading {
        font-size: 2.5em;
      }
      .page-bl-55__subheading {
        font-size: 1.5em;
      }
    }

    @media (max-width: 768px) {
      .page-bl-55__hero-section {
        padding: 80px 0;
        min-height: 400px;
      }
      .page-bl-55__hero-title {
        font-size: 2.5em;
      }
      .page-bl-55__hero-description {
        font-size: 1em;
      }
      .page-bl-55__heading {
        font-size: 2em;
      }
      .page-bl-55__subheading {
        font-size: 1.2em;
      }
      .page-bl-55__section {
        padding: 40px 0;
      }

      /* Nút nổi cho thiết bị di động */
      .page-bl-55__floating-buttons {
        right: 10px;
        bottom: 15px; /* Di chuyển xuống góc dưới bên phải cho di động */
        top: auto;
        transform: none;
        flex-direction: row; /* Sắp xếp ngang */
        gap: 10px;
        width: calc(100% - 20px);
        justify-content: center;
      }
      .page-bl-55__floating-button {
        padding: 10px 15px;
        font-size: 0.9em;
        flex-grow: 1;
      }

      /* Khả năng đáp ứng chung cho các mục danh sách */
      .page-bl-55__game-card,
      .page-bl-55__promotion-card,
      .page-bl-55__feature-item,
      .page-bl-55__logo-item,
      .page-bl-55__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-bl-55__game-categories,
      .page-bl-55__promotions-grid,
      .page-bl-55__feature-list,
      .page-bl-55__logo-grid,
      .page-bl-55__faq-list {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 10px !important; /* Điều chỉnh padding cho container */
        margin-left: 0 !important;
        margin-right: 0 !important;
        display: block; /* Xếp chồng các mục */
      }
      .page-bl-55__game-card-image-wrapper {
        height: 150px;
      }
      .page-bl-55__game-card-title,
      .page-bl-55__promotion-card-title,
      .page-bl-55__feature-title {
        font-size: 1.3em;
      }
      .page-bl-55__faq-question {
        padding: 15px 20px;
      }
      .page-bl-55__faq-question h3 {
        font-size: 1.1em;
      }
      .page-bl-55__faq-answer {
        padding: 0 20px;
      }
      .page-bl-55__faq-item.active .page-bl-55__faq-answer {
        padding: 15px 20px !important;
      }

      /* Khả năng đáp ứng hình ảnh */
      .page-bl-55 img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-bl-55__hero-title {
        font-size: 2em;
      }
      .page-bl-55__hero-description {
        font-size: 0.9em;
      }
      .page-bl-55__button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-bl-55__floating-button {
        font-size: 0.85em;
        padding: 8px 12px;
      }
      .page-bl-55__heading {
        font-size: 1.8em;
      }
      .page-bl-55__subheading {
        font-size: 1.1em;
      }
      .page-bl-55__paragraph {
        font-size: 0.95em;
      }
    }