/* Tổng quan */
    .page-18win11 {
      font-family: 'Arial', sans-serif;
      color: #e0e0e0;
      background-color: #1a1a1a;
      line-height: 1.6;
      overflow-x: hidden;
    }

    .page-18win11__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-18win11__section {
      padding: 40px 0;
      text-align: center;
    }

    .page-18win11__title {
      color: #fdd835; /* Vàng sáng */
      font-size: 2.5em;
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-18win11__subtitle {
      color: #ffffff;
      font-size: 1.8em;
      margin-bottom: 25px;
    }

    .page-18win11__text {
      font-size: 1.1em;
      margin-bottom: 20px;
    }

    .page-18win11__button {
      display: inline-block;
      background-color: #f44336; /* Đỏ */
      color: #ffffff;
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-18win11__button:hover {
      background-color: #e53935;
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-18win11__hero-section {
      position: relative;
      width: 100%;
      height: 60vh; /* Chiều cao tương đối */
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      color: #ffffff;
      padding-top: 60px; /* Cho mobile */
      overflow: hidden;
    }

    .page-18win11__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: -1;
      filter: brightness(0.7); /* Làm tối ảnh nền */
    }

    .page-18win11__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
      background-color: rgba(0, 0, 0, 0.4);
      border-radius: 10px;
      max-width: 90%;
    }

    .page-18win11__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #fdd835;
      text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
    }

    .page-18win11__hero-slogan {
      font-size: 1.3em;
      margin-bottom: 30px;
      font-weight: normal;
    }

    /* Floating Login Button */
    .page-18win11__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: #4CAF50; /* Xanh lá */
      color: #ffffff;
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease;
      white-space: nowrap;
    }

    .page-18win11__floating-button:hover {
      background-color: #45a049;
      transform: translateX(-50%) translateY(-3px);
    }

    /* Game Categories */
    .page-18win11__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-18win11__game-card {
      background-color: #2a2a2a;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: left;
    }

    .page-18win11__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-18win11__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-18win11__game-content {
      padding: 20px;
    }

    .page-18win11__game-title {
      font-size: 1.4em;
      color: #fdd835;
      margin-bottom: 10px;
    }

    .page-18win11__game-description {
      font-size: 0.95em;
      color: #cccccc;
      margin-bottom: 15px;
    }

    .page-18win11__game-button {
      background-color: #f44336;
      color: #ffffff;
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      font-size: 0.9em;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-18win11__game-button:hover {
      background-color: #e53935;
    }

    /* Promotion Section */
    .page-18win11__promotion-card {
      background: linear-gradient(135deg, #3f51b5, #2196f3); /* Xanh dương gradient */
      border-radius: 15px;
      padding: 30px;
      margin-top: 30px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
      color: #ffffff;
      text-align: center;
    }

    .page-18win11__promotion-title {
      font-size: 2em;
      margin-bottom: 15px;
      color: #fdd835;
    }

    .page-18win11__promotion-text {
      font-size: 1.15em;
      margin-bottom: 25px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Call to Action */
    .page-18win11__cta-section {
      background-color: #2a2a2a;
      padding: 50px 0;
      text-align: center;
    }

    .page-18win11__cta-title {
      color: #fdd835;
      font-size: 2.2em;
      margin-bottom: 20px;
    }

    .page-18win11__cta-text {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: #cccccc;
    }

    /* FAQ Section */
    .page-18win11__faq-section {
      background-color: #1a1a1a;
      padding: 50px 0;
      text-align: center;
    }

    .page-18win11__faq-list {
      max-width: 800px;
      margin: 30px auto 0 auto;
      text-align: left;
    }

    .page-18win11__faq-item {
      background-color: #2a2a2a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }

    .page-18win11__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #333333;
      cursor: pointer;
      user-select: none;
      border-bottom: 1px solid #444444;
      transition: background-color 0.3s ease;
    }

    .page-18win11__faq-question:hover {
      background-color: #444444;
    }

    .page-18win11__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: #ffffff;
      pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
    }

    .page-18win11__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: #fdd835;
      pointer-events: none; /* Ngăn chặn toggle chặn sự kiện click */
      transition: transform 0.3s ease;
    }

    .page-18win11__faq-item.active .page-18win11__faq-toggle {
      transform: rotate(45deg);
    }

    .page-18win11__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #cccccc;
      background-color: #2a2a2a;
    }

    .page-18win11__faq-item.active .page-18win11__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px !important;
      opacity: 1;
    }
    
    .page-18win11__faq-answer p {
        margin: 0;
        padding-bottom: 10px;
    }
    .page-18win11__faq-answer p:last-child {
        padding-bottom: 0;
    }


    /* Responsive Design */
    @media (max-width: 768px) {
      .page-18win11__hero-section {
        height: 50vh;
        padding-top: 60px; /* Adjust for mobile header */
      }
      .page-18win11__hero-title {
        font-size: 2em;
      }
      .page-18win11__hero-slogan {
        font-size: 1em;
      }
      .page-18win11__title {
        font-size: 2em;
      }
      .page-18win11__subtitle {
        font-size: 1.5em;
      }
      .page-18win11__text {
        font-size: 1em;
      }
      .page-18win11__button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-18win11__floating-button {
        padding: 10px 20px;
        font-size: 0.9em;
      }
      .page-18win11__game-grid {
        grid-template-columns: 1fr;
      }
      .page-18win11__game-card {
        margin: 0 10px;
      }
      .page-18win11__promotion-title {
        font-size: 1.6em;
      }
      .page-18win11__promotion-text {
        font-size: 1em;
      }
      .page-18win11__cta-title {
        font-size: 1.8em;
      }
      .page-18win11__cta-text {
        font-size: 1.1em;
      }
      .page-18win11__faq-question {
          padding: 12px 15px;
      }
      .page-18win11__faq-question h3 {
          font-size: 1.1em;
      }
      .page-18win11__faq-answer {
          padding: 0 15px;
      }
      .page-18win11__faq-item.active .page-18win11__faq-answer {
          padding: 15px !important;
      }

      /* Image responsiveness for mobile */
      .page-18win11 img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-18win11__game-card img {
        max-width: 100% !important;
        height: 180px !important; /* Adjust height for mobile game cards */
      }
      .page-18win11__hero-background {
        max-width: 100% !important;
        height: 100% !important;
      }
      .page-18win11__image-container {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    @media (min-width: 769px) {
      .page-18win11__hero-section {
        padding-top: 70px; /* Adjust for desktop header */
      }
      .page-18win11__floating-button {
        bottom: 30px;
      }
    }