:root {
      --page-winvn11-primary-color: #e44d26; /* Màu cam đỏ */
      --page-winvn11-secondary-color: #f7931e; /* Màu cam */
      --page-winvn11-text-color: #333;
      --page-winvn11-light-text-color: #666;
      --page-winvn11-bg-light: #f9f9f9;
      --page-winvn11-bg-dark: #eee;
      --page-winvn11-white: #fff;
      --page-winvn11-border-color: #ddd;
    }

    .page-winvn11 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--page-winvn11-text-color);
      background-color: var(--page-winvn11-bg-light);
    }

    .page-winvn11__hero-section {
      position: relative;
      width: 100%;
      height: 60vh; /* Điều chỉnh chiều cao cho phù hợp */
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      color: var(--page-winvn11-white);
      overflow: hidden;
      padding-top: 10px; /* Cho khoảng trống để tránh bị header cố định che */
      box-sizing: border-box;
    }

    .page-winvn11__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: -1;
      filter: brightness(0.7); /* Làm tối nền để chữ dễ đọc hơn */
    }

    .page-winvn11__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
      max-width: 900px;
    }

    .page-winvn11__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      line-height: 1.2;
      color: var(--page-winvn11-white);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-winvn11__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: var(--page-winvn11-white);
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
    }

    .page-winvn11__main-button {
      display: inline-block;
      padding: 15px 30px;
      background-color: var(--page-winvn11-secondary-color);
      color: var(--page-winvn11-white);
      text-decoration: none;
      border-radius: 8px;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      border: none; /* Sử dụng button tag, không cần border */
      cursor: pointer;
    }

    .page-winvn11__main-button:hover {
      background-color: var(--page-winvn11-primary-color);
      transform: translateY(-2px);
    }

    .page-winvn11__section {
      padding: 60px 20px;
      max-width: 1200px;
      margin: 0 auto;
      text-align: center;
    }

    .page-winvn11__section--alt {
      background-color: var(--page-winvn11-bg-dark);
    }

    .page-winvn11__section-title {
      font-size: 2.2em;
      color: var(--page-winvn11-primary-color);
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 15px;
    }

    .page-winvn11__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-winvn11-secondary-color);
      border-radius: 2px;
    }

    .page-winvn11__text-content {
      font-size: 1.1em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      color: var(--page-winvn11-light-text-color);
    }

    .page-winvn11__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-winvn11__game-card {
      background-color: var(--page-winvn11-white);
      border-radius: 12px;
      box-shadow: 0 6px 20px 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;
      box-sizing: border-box;
      max-width: 100%;
    }

    .page-winvn11__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }

    .page-winvn11__game-card-image {
      width: 100%;
      height: 200px; /* Kích thước tối thiểu 200x200px */
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-winvn11__game-card-content {
      padding: 25px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-winvn11__game-card-title {
      font-size: 1.5em;
      color: var(--page-winvn11-primary-color);
      margin-bottom: 15px;
    }

    .page-winvn11__game-card-description {
      font-size: 0.95em;
      color: var(--page-winvn11-light-text-color);
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .page-winvn11__promotion-card {
      background-color: var(--page-winvn11-primary-color);
      color: var(--page-winvn11-white);
      padding: 40px;
      border-radius: 15px;
      margin-top: 50px;
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    }

    .page-winvn11__promotion-card-title {
      font-size: 2.5em;
      margin-bottom: 20px;
    }

    .page-winvn11__promotion-card-text {
      font-size: 1.2em;
      margin-bottom: 30px;
      line-height: 1.5;
    }

    .page-winvn11__steps-list {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 30px;
      margin-top: 40px;
      list-style: none;
      padding: 0;
    }

    .page-winvn11__step-item {
      background-color: var(--page-winvn11-white);
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
      padding: 30px;
      width: 300px;
      text-align: left;
      position: relative;
      box-sizing: border-box;
    }

    .page-winvn11__step-number {
      font-size: 2.5em;
      color: var(--page-winvn11-secondary-color);
      font-weight: bold;
      margin-bottom: 15px;
      display: block;
    }

    .page-winvn11__step-title {
      font-size: 1.3em;
      color: var(--page-winvn11-primary-color);
      margin-bottom: 10px;
    }

    .page-winvn11__step-description {
      font-size: 1em;
      color: var(--page-winvn11-light-text-color);
    }

    .page-winvn11__faq-section {
      background-color: var(--page-winvn11-bg-light);
      padding: 60px 20px;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-winvn11__faq-item {
      background-color: var(--page-winvn11-white);
      border: 1px solid var(--page-winvn11-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .page-winvn11__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      background-color: var(--page-winvn11-white);
      color: var(--page-winvn11-primary-color);
      font-weight: bold;
      font-size: 1.15em;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-winvn11__faq-question:hover {
      background-color: var(--page-winvn11-bg-dark);
    }

    .page-winvn11__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      text-align: left;
      pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
      color: inherit;
    }

    .page-winvn11__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn dấu +/- chặn sự kiện click */
    }

    .page-winvn11__faq-item.active .page-winvn11__faq-toggle {
      transform: rotate(45deg); /* Biến + thành X hoặc - */
    }

    .page-winvn11__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: var(--page-winvn11-text-color);
      text-align: left;
    }

    .page-winvn11__faq-item.active .page-winvn11__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-winvn11__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-winvn11-primary-color);
      color: var(--page-winvn11-white);
      padding: 15px 25px;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      cursor: pointer;
      border: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .page-winvn11__floating-button:hover {
      background-color: #c0392b; /* Màu đỏ đậm hơn */
      transform: translateY(-3px);
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-winvn11__hero-section {
        height: 50vh;
        padding-top: 10px; /* Giữ khoảng trống cho header */
      }

      .page-winvn11__hero-title {
        font-size: 2em;
      }

      .page-winvn11__hero-subtitle {
        font-size: 1em;
      }

      .page-winvn11__main-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-winvn11__section {
        padding: 40px 15px;
      }

      .page-winvn11__section-title {
        font-size: 1.8em;
      }

      .page-winvn11__text-content {
        font-size: 1em;
      }

      .page-winvn11__game-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .page-winvn11__game-card {
        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;
        word-break: break-word !important;
      }

      .page-winvn11__game-card-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      .page-winvn11__promotion-card {
        padding: 30px 20px;
      }

      .page-winvn11__promotion-card-title {
        font-size: 2em;
      }

      .page-winvn11__promotion-card-text {
        font-size: 1em;
      }

      .page-winvn11__steps-list {
        flex-direction: column;
        align-items: center;
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }

      .page-winvn11__step-item {
        width: 100% !important;
        max-width: 100% !important;
        padding: 20px !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-winvn11__faq-section {
        padding: 40px 15px;
      }

      .page-winvn11__faq-question {
        font-size: 1em;
        padding: 15px 20px;
      }

      .page-winvn11__faq-answer {
        padding: 15px 20px !important;
        font-size: 0.95em;
      }

      .page-winvn11__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
    }