/* Tổng quan */
    .page-13-win-15 {
      font-family: 'Arial', sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f8f8f8;
      padding-top: 10px; /* Giảm khoảng cách đầu trang, giả định body padding đã được xử lý bởi shared.css */
    }

    .page-13-win-15__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    /* Tiêu đề chính */
    .page-13-win-15__main-title {
      text-align: center;
      color: #007bff;
      margin-top: 20px;
      margin-bottom: 30px;
      font-size: 2.5em;
      font-weight: bold;
      text-transform: uppercase;
    }
    @media (max-width: 768px) {
      .page-13-win-15__main-title {
        font-size: 1.8em;
        margin-top: 15px;
        margin-bottom: 20px;
      }
    }

    /* Phần Hero */
    .page-13-win-15__hero-section {
      position: relative;
      overflow: hidden;
      background-color: #0a1930;
      color: #fff;
      padding: 60px 0;
      text-align: center;
      margin-bottom: 30px;
    }

    .page-13-win-15__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.6;
      z-index: 1;
    }

    .page-13-win-15__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-13-win-15__hero-title {
      font-size: 3.5em;
      margin-bottom: 20px;
      color: #ffc107;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-13-win-15__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: 30px;
      color: #e0e0e0;
    }
    @media (max-width: 768px) {
      .page-13-win-15__hero-title {
        font-size: 2.2em;
      }
      .page-13-win-15__hero-subtitle {
        font-size: 1.1em;
      }
      .page-13-win-15__hero-section {
        padding: 40px 0;
      }
    }

    /* Nút nổi Đăng Ký/Đăng Nhập */
    .page-13-win-15__floating-buttons {
      position: fixed;
      right: 15px;
      bottom: 80px; /* Điều chỉnh để không che footer trên mobile */
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .page-13-win-15__floating-button {
      background-color: #007bff;
      color: #fff;
      padding: 12px 20px;
      border: none;
      border-radius: 50px;
      font-size: 1em;
      font-weight: bold;
      cursor: pointer;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-decoration: none;
      text-align: center;
      white-space: nowrap;
    }

    .page-13-win-15__floating-button:hover {
      background-color: #0056b3;
      transform: translateY(-2px);
    }

    .page-13-win-15__floating-button--register {
      background-color: #28a745;
    }

    .page-13-win-15__floating-button--register:hover {
      background-color: #218838;
    }
    @media (max-width: 768px) {
      .page-13-win-15__floating-buttons {
        right: 10px;
        bottom: 70px; /* Điều chỉnh cho mobile */
        gap: 8px;
      }
      .page-13-win-15__floating-button {
        padding: 10px 15px;
        font-size: 0.9em;
      }
    }

    /* Phần Giới thiệu */
    .page-13-win-15__intro-section {
      background-color: #fff;
      padding: 40px 0;
      margin-bottom: 30px;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .page-13-win-15__section-title {
      font-size: 2em;
      color: #007bff;
      text-align: center;
      margin-bottom: 30px;
      position: relative;
    }

    .page-13-win-15__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: -10px;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: #ffc107;
      border-radius: 2px;
    }

    .page-13-win-15__intro-text {
      font-size: 1.1em;
      color: #555;
      text-align: center;
      max-width: 800px;
      margin: 0 auto;
    }
    @media (max-width: 768px) {
      .page-13-win-15__intro-section {
        padding: 30px 0;
      }
      .page-13-win-15__section-title {
        font-size: 1.6em;
        margin-bottom: 20px;
      }
      .page-13-win-15__intro-text {
        font-size: 1em;
      }
    }

    /* Phần Sản phẩm */
    .page-13-win-15__products-section {
      padding: 40px 0;
      margin-bottom: 30px;
    }

    .page-13-win-15__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-13-win-15__product-card {
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-13-win-15__product-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    }

    .page-13-win-15__product-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 200px; /* Cố định chiều cao cho ảnh */
    }
    .page-13-win-15__product-image {
      width: 100%;
      height: 100%;
      object-fit: cover; /* Đảm bảo ảnh lấp đầy khung mà không bị méo */
      display: block;
      max-width: 100%; /* Bắt buộc */
      height: auto; /* Bắt buộc */
    }

    .page-13-win-15__product-content {
      padding: 20px;
    }

    .page-13-win-15__product-title {
      font-size: 1.4em;
      color: #007bff;
      margin-bottom: 10px;
    }

    .page-13-win-15__product-description {
      font-size: 0.95em;
      color: #666;
      margin-bottom: 15px;
    }
    @media (max-width: 768px) {
      .page-13-win-15__product-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-13-win-15__product-title {
        font-size: 1.2em;
      }
      .page-13-win-15__product-image-wrapper {
        height: 180px;
      }
    }

    /* Phần Khuyến mãi */
    .page-13-win-15__promotions-section {
      background-color: #0a1930;
      color: #fff;
      padding: 40px 0;
      margin-bottom: 30px;
      text-align: center;
    }

    .page-13-win-15__promotions-section .page-13-win-15__section-title {
      color: #ffc107;
    }

    .page-13-win-15__promotion-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-13-win-15__promotion-card {
      background-color: #1a2a40;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      padding: 25px;
      text-align: left;
      transition: transform 0.3s ease;
    }

    .page-13-win-15__promotion-card:hover {
      transform: translateY(-5px);
    }

    .page-13-win-15__promotion-title {
      font-size: 1.5em;
      color: #007bff;
      margin-bottom: 10px;
    }

    .page-13-win-15__promotion-description {
      font-size: 1em;
      color: #ccc;
      margin-bottom: 15px;
    }

    .page-13-win-15__promotion-link {
      display: inline-block;
      background-color: #28a745;
      color: #fff;
      padding: 8px 15px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-13-win-15__promotion-link:hover {
      background-color: #218838;
    }
    @media (max-width: 768px) {
      .page-13-win-15__promotion-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-13-win-15__promotion-title {
        font-size: 1.3em;
      }
      .page-13-win-15__promotion-card {
        padding: 20px;
      }
    }

    /* Phần Nhà cung cấp game */
    .page-13-win-15__providers-section {
      padding: 40px 0;
      margin-bottom: 30px;
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .page-13-win-15__provider-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      padding: 0;
      list-style: none;
    }

    .page-13-win-15__provider-item {
      background-color: #f0f0f0;
      padding: 15px 25px;
      border-radius: 5px;
      font-weight: bold;
      color: #333;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
      transition: background-color 0.3s ease;
      box-sizing: border-box; /* Bắt buộc cho list item */
      width: auto; /* Điều chỉnh cho mobile */
      max-width: 100%; /* Điều chỉnh cho mobile */
      text-align: center; /* Điều chỉnh cho mobile */
    }

    .page-13-win-15__provider-item:hover {
      background-color: #e0e0e0;
    }
    @media (max-width: 768px) {
      .page-13-win-15__provider-list {
        flex-direction: column;
        align-items: center;
        gap: 15px;
      }
      .page-13-win-15__provider-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 12px 15px;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-13-win-15__providers-section .page-13-win-15__container {
        padding: 0 10px !important;
      }
      .page-13-win-15__provider-list {
        padding: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
    }

    /* Phần Thanh toán */
    .page-13-win-15__payment-section {
      padding: 40px 0;
      margin-bottom: 30px;
    }

    .page-13-win-15__payment-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
    }

    .page-13-win-15__payment-method {
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      padding: 20px;
      text-align: center;
      min-width: 150px;
      flex: 1 1 auto;
      box-sizing: border-box;
      transition: transform 0.3s ease;
    }

    .page-13-win-15__payment-method:hover {
      transform: translateY(-5px);
    }

    .page-13-win-15__payment-logo-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 80px; /* Cố định chiều cao cho logo */
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;
    }
    .page-13-win-15__payment-logo {
      max-width: 100%;
      max-height: 100%;
      height: auto;
      object-fit: contain;
      display: block;
    }

    .page-13-win-15__payment-name {
      font-weight: bold;
      color: #333;
      font-size: 1.1em;
    }
    @media (max-width: 768px) {
      .page-13-win-15__payment-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 15px;
      }
      .page-13-win-15__payment-method {
        min-width: unset;
        width: calc(50% - 10px); /* 2 cột trên mobile */
        padding: 15px;
      }
      .page-13-win-15__payment-logo-wrapper {
        height: 60px;
      }
      .page-13-win-15__payment-name {
        font-size: 1em;
      }
    }

    /* Phần FAQ */
    .page-13-win-15__faq-section {
      background-color: #fff;
      padding: 40px 0;
      margin-bottom: 30px;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .page-13-win-15__faq-list {
      margin-top: 30px;
    }

    .page-13-win-15__faq-item {
      border: 1px solid #ddd;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
    }

    .page-13-win-15__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #f0f0f0;
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      color: #333;
      transition: background-color 0.3s ease;
    }

    .page-13-win-15__faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-13-win-15__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: #007bff;
      pointer-events: none; /* Ngăn chặn sự kiện click trên h3 */
    }

    .page-13-win-15__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: #007bff;
      pointer-events: none; /* Ngăn chặn sự kiện click trên toggle icon */
      transition: transform 0.3s ease;
    }

    .page-13-win-15__faq-item.active .page-13-win-15__faq-toggle {
      transform: rotate(45deg); /* Biến '+' thành 'x' hoặc '-' */
      color: #dc3545;
    }

    .page-13-win-15__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      background-color: #fdfdfd;
      color: #555;
    }

    .page-13-win-15__faq-item.active .page-13-win-15__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 15px !important;
      opacity: 1;
    }
    @media (max-width: 768px) {
      .page-13-win-15__faq-question {
        padding: 12px 15px;
      }
      .page-13-win-15__faq-question h3 {
        font-size: 1em;
      }
      .page-13-win-15__faq-toggle {
        font-size: 1.2em;
      }
      .page-13-win-15__faq-answer {
        padding: 0 10px;
      }
      .page-13-win-15__faq-item.active .page-13-win-15__faq-answer {
        padding: 15px 10px !important;
      }
    }

    /* Phần Về chúng tôi */
    .page-13-win-15__about-section {
      background-color: #0a1930;
      color: #fff;
      padding: 40px 0;
      text-align: center;
    }

    .page-13-win-15__about-section .page-13-win-15__section-title {
      color: #ffc107;
    }

    .page-13-win-15__about-text {
      font-size: 1.1em;
      color: #e0e0e0;
      max-width: 800px;
      margin: 0 auto;
      margin-top: 20px;
    }

    .page-13-win-15__about-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }

    .page-13-win-15__about-item {
      background-color: #1a2a40;
      padding: 15px 20px;
      border-radius: 5px;
      font-weight: bold;
      color: #007bff;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
      box-sizing: border-box; /* Bắt buộc cho list item */
      width: auto; /* Điều chỉnh cho mobile */
      max-width: 100%; /* Điều chỉnh cho mobile */
      text-align: center; /* Điều chỉnh cho mobile */
    }
    @media (max-width: 768px) {
      .page-13-win-15__about-text {
        font-size: 1em;
      }
      .page-13-win-15__about-list {
        flex-direction: column;
        align-items: center;
        gap: 15px;
      }
      .page-13-win-15__about-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 12px 15px;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-13-win-15__about-section .page-13-win-15__container {
        padding: 0 10px !important;
      }
      .page-13-win-15__about-list {
        padding: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
    }