/* Reset và cơ bản */
    .page-13win20 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #f9f9f9;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-13win20__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-13win20__section {
      padding: 40px 0;
      text-align: center;
    }

    .page-13win20__section-title {
      font-size: 2.5em;
      color: #1a2a6c;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-13win20__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      bottom: 0;
      width: 60px;
      height: 4px;
      background-color: #f0a500;
      border-radius: 2px;
    }

    .page-13win20__section-subtitle {
      font-size: 1.2em;
      color: #555;
      margin-bottom: 40px;
    }

    /* Hero Section */
    .page-13win20__hero-section {
      position: relative;
      width: 100%;
      overflow: hidden;
      padding-top: 10px; /* Để tránh bị header cố định che mất */
      padding-bottom: 30px;
      background: linear-gradient(135deg, #1a2a6c 0%, #b21f1f 100%);
      color: #fff;
      text-align: center;
    }

    .page-13win20__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.3;
      z-index: 0;
      max-width: 100%;
      height: auto;
    }

    .page-13win20__hero-content {
      position: relative;
      z-index: 1;
      padding: 60px 15px;
    }

    .page-13win20__hero-title {
      font-size: 3em;
      margin-bottom: 15px;
      line-height: 1.2;
      color: #fff;
    }

    .page-13win20__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: 30px;
      color: #f0f0f0;
    }

    .page-13win20__cta-button {
      display: inline-block;
      background-color: #f0a500;
      color: #fff;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      border: none;
      cursor: pointer;
    }

    .page-13win20__cta-button:hover {
      background-color: #e09500;
      transform: translateY(-3px);
    }

    /* Floating Button */
    .page-13win20__floating-button {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background-color: #f0a500;
      padding: 15px 0;
      text-align: center;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      display: none; /* Mặc định ẩn trên desktop */
    }

    .page-13win20__floating-button a {
      color: #fff;
      font-size: 1.3em;
      font-weight: bold;
      text-decoration: none;
      display: block;
      padding: 5px 10px;
    }

    /* Giới thiệu */
    .page-13win20__intro-text {
      font-size: 1.1em;
      max-width: 800px;
      margin: 0 auto 40px auto;
      color: #444;
    }

    /* Product Grid */
    .page-13win20__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      padding: 20px 0;
      text-align: left;
    }

    .page-13win20__product-card {
      background-color: #fff;
      border-radius: 12px;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .page-13win20__product-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }

    .page-13win20__product-image-wrapper {
      width: 100%;
      height: 200px; /* Kích thước cố định cho hình ảnh sản phẩm */
      overflow: hidden;
      position: relative;
      border-bottom: 1px solid #eee;
    }

    .page-13win20__product-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
      max-width: 100%;
      height: auto;
    }

    .page-13win20__product-card:hover .page-13win20__product-image {
      transform: scale(1.05);
    }

    .page-13win20__product-content {
      padding: 25px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      width: 100%;
    }

    .page-13win20__product-title {
      font-size: 1.5em;
      color: #1a2a6c;
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-13win20__product-description {
      font-size: 0.95em;
      color: #666;
      margin-bottom: 20px;
    }

    .page-13win20__product-button {
      background-color: #f0a500;
      color: #fff;
      padding: 10px 20px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      display: block;
      width: fit-content;
      margin: 0 auto;
      border: none;
      cursor: pointer;
    }

    .page-13win20__product-button:hover {
      background-color: #e09500;
    }

    /* Hướng dẫn */
    .page-13win20__steps-container {
      display: flex;
      flex-direction: column;
      gap: 30px;
      max-width: 900px;
      margin: 0 auto;
      text-align: left;
    }

    .page-13win20__step-item {
      background-color: #fff;
      border-radius: 12px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
      padding: 30px;
      display: flex;
      align-items: flex-start;
      gap: 25px;
    }

    .page-13win20__step-icon-wrapper {
      flex-shrink: 0;
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background-color: #1a2a6c;
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 2.5em;
      color: #f0a500;
      font-weight: bold;
    }

    .page-13win20__step-content {
      flex-grow: 1;
    }

    .page-13win20__step-title {
      font-size: 1.8em;
      color: #1a2a6c;
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-13win20__step-description {
      font-size: 1em;
      color: #555;
    }

    /* Ưu đãi */
    .page-13win20__promotion-card {
      background: linear-gradient(45deg, #b21f1f 0%, #1a2a6c 100%);
      color: #fff;
      padding: 40px;
      border-radius: 15px;
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
      max-width: 800px;
      margin: 0 auto;
      position: relative;
      overflow: hidden;
    }

    .page-13win20__promotion-card::before {
      content: '✨';
      position: absolute;
      top: -10px;
      left: -10px;
      font-size: 6em;
      opacity: 0.1;
      transform: rotate(-20deg);
    }
    .page-13win20__promotion-card::after {
      content: '💰';
      position: absolute;
      bottom: -10px;
      right: -10px;
      font-size: 6em;
      opacity: 0.1;
      transform: rotate(20deg);
    }

    .page-13win20__promotion-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #f0a500;
      text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    }

    .page-13win20__promotion-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: #f0f0f0;
    }

    /* FAQ Section */
    .page-13win20__faq-section {
      background-color: #f0f0f0;
      padding: 60px 0;
    }

    .page-13win20__faq-container {
      max-width: 900px;
      margin: 0 auto;
      text-align: left;
    }

    .page-13win20__faq-item {
      background-color: #fff;
      border-radius: 10px;
      margin-bottom: 15px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      overflow: hidden;
    }

    .page-13win20__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      background-color: #fff;
      border-bottom: 1px solid #eee;
      transition: background-color 0.3s ease;
    }

    .page-13win20__faq-question:hover {
      background-color: #f5f5f5;
    }

    .page-13win20__faq-title {
      font-size: 1.2em;
      color: #1a2a6c;
      margin: 0;
      font-weight: bold;
      pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
      flex-grow: 1;
    }

    .page-13win20__faq-toggle {
      font-size: 1.8em;
      color: #f0a500;
      font-weight: bold;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn span chặn sự kiện click */
      width: 25px;
      text-align: center;
    }

    .page-13win20__faq-item.active .page-13win20__faq-toggle {
      transform: rotate(45deg); /* Biến đổi '+' thành 'x' hoặc '-' */
    }

    .page-13win20__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #555;
    }

    .page-13win20__faq-item.active .page-13win20__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-13win20__faq-answer p {
      margin: 0 0 10px 0;
      line-height: 1.8;
    }
    .page-13win20__faq-answer p:last-child {
        margin-bottom: 0;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-13win20__hero-section {
        padding-top: 10px; /* Cần điều chỉnh cho mobile */
      }
      .page-13win20__hero-content {
        padding: 40px 15px;
      }
      .page-13win20__hero-title {
        font-size: 2em;
      }
      .page-13win20__hero-subtitle {
        font-size: 1.1em;
      }
      .page-13win20__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-13win20__section-title {
        font-size: 2em;
      }

      .page-13win20__intro-text {
        font-size: 1em;
      }

      .page-13win20__product-grid {
        grid-template-columns: 1fr;
      }

      .page-13win20__step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .page-13win20__step-icon-wrapper {
        margin-bottom: 20px;
      }

      .page-13win20__promotion-card {
        padding: 30px 20px;
      }
      .page-13win20__promotion-title {
        font-size: 2em;
      }
      .page-13win20__promotion-description {
        font-size: 1em;
      }

      .page-13win20__faq-question {
        padding: 15px 20px;
      }
      .page-13win20__faq-title {
        font-size: 1.1em;
      }
      .page-13win20__faq-answer {
        padding: 0 20px;
      }
      .page-13win20__faq-item.active .page-13win20__faq-answer {
        padding: 15px 20px !important;
      }

      .page-13win20__floating-button {
        display: block; /* Hiển thị trên mobile */
      }

      /* Image responsive adjustments for mobile */
      .page-13win20 img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-13win20__product-image-wrapper,
      .page-13win20__hero-image {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }