/* Tổng quan */
    body {
      margin: 0;
      font-family: 'Arial', sans-serif;
      background-color: #1a1a2e; /* Màu nền tối */
      color: #e0e0e0; /* Màu chữ sáng */
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    .page-9vndwin {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
      box-sizing: border-box;
    }

    .page-9vndwin__section-title {
      font-size: 2.5rem;
      color: #e94560; /* Màu nhấn */
      text-align: center;
      margin-bottom: 40px;
      padding-top: 20px;
      font-weight: bold;
    }

    .page-9vndwin__section-intro {
      text-align: center;
      font-size: 1.1rem;
      margin-bottom: 50px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-9vndwin__cta-button {
      display: inline-block;
      background-color: #e94560; /* Màu nhấn */
      color: #ffffff;
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-size: 1.1rem;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      text-align: center;
      border: none;
      cursor: pointer;
    }

    .page-9vndwin__cta-button:hover {
      background-color: #d1324c;
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-9vndwin__hero-section {
      position: relative;
      background-color: #0f0f1d;
      padding-top: 10px; /* Required padding for fixed header */
      text-align: center;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 500px; /* Ensure enough height */
      padding-bottom: 50px;
    }

    .page-9vndwin__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-9vndwin__main-title {
      font-size: 3.2rem;
      color: #ffffff;
      margin-bottom: 20px;
      line-height: 1.2;
    }

    .page-9vndwin__hero-description {
      font-size: 1.3rem;
      color: #cccccc;
      margin-bottom: 40px;
    }

    .page-9vndwin__hero-image-wrapper {
        width: 100%;
        max-width: 100%;
        margin-top: 30px;
        overflow: hidden;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .page-9vndwin__hero-image {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: 10px;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    }

    /* Floating CTA Button (Mobile Only) */
    .page-9vndwin__floating-cta-mobile {
      display: none; /* Hidden by default */
    }

    /* Why Choose Us Section */
    .page-9vndwin__why-choose-us {
      padding: 60px 0;
      background-color: #1f1f3a;
    }

    .page-9vndwin__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 50px;
      max-width: 1000px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-9vndwin__feature-item {
      background-color: #2a2a4a;
      padding: 30px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-9vndwin__feature-item:hover {
      transform: translateY(-5px);
    }

    .page-9vndwin__feature-icon {
      width: 120px; /* Minimum 200px wide, 200px tall */
      height: auto;
      margin-bottom: 20px;
      display: block;
      margin-left: auto;
      margin-right: auto;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-9vndwin__feature-title {
      font-size: 1.8rem;
      color: #e94560;
      margin-bottom: 15px;
    }

    .page-9vndwin__feature-description {
      font-size: 1rem;
      color: #cccccc;
    }

    /* Game Categories Section */
    .page-9vndwin__game-categories {
      padding: 80px 0;
      background-color: #1a1a2e;
    }

    .page-9vndwin__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      margin-top: 50px;
      max-width: 1100px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-9vndwin__game-card {
      background-color: #2a2a4a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      text-align: center;
      box-sizing: border-box;
    }

    .page-9vndwin__game-card:hover {
      transform: translateY(-5px);
    }

    .page-9vndwin__game-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency, will be covered by max-width: 100%; height: auto; on mobile */
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-9vndwin__game-title {
      font-size: 1.5rem;
      color: #e94560;
      margin: 20px 0 10px;
    }

    .page-9vndwin__game-description {
      font-size: 0.95rem;
      color: #cccccc;
      padding: 0 20px 20px;
    }

    .page-9vndwin__section-cta {
      text-align: center;
      margin-top: 60px;
    }

    /* Promotions Section */
    .page-9vndwin__promotions {
      padding: 80px 0;
      background-color: #1f1f3a;
    }

    .page-9vndwin__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 50px;
      max-width: 1100px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-9vndwin__promo-card {
      background-color: #2a2a4a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      text-align: center;
      box-sizing: border-box;
    }

    .page-9vndwin__promo-card:hover {
      transform: translateY(-5px);
    }

    .page-9vndwin__promo-image {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-9vndwin__promo-title {
      font-size: 1.6rem;
      color: #e94560;
      margin: 20px 0 10px;
    }

    .page-9vndwin__promo-description {
      font-size: 1rem;
      color: #cccccc;
      padding: 0 20px 20px;
    }

    /* Registration Guide Section */
    .page-9vndwin__registration-guide {
      padding: 80px 0;
      background-color: #1a1a2e;
    }

    .page-9vndwin__guide-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 50px;
      max-width: 1000px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-9vndwin__guide-step-item {
      background-color: #2a2a4a;
      padding: 30px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-9vndwin__guide-step-item:hover {
      transform: translateY(-5px);
    }

    .page-9vndwin__guide-step-icon {
      width: 120px;
      height: auto;
      margin-bottom: 20px;
      display: block;
      margin-left: auto;
      margin-right: auto;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-9vndwin__guide-step-title {
      font-size: 1.8rem;
      color: #e94560;
      margin-bottom: 15px;
    }

    .page-9vndwin__guide-step-description {
      font-size: 1rem;
      color: #cccccc;
    }

    /* FAQ Section */
    .page-9vndwin__faq-section {
      padding: 80px 0;
      background-color: #1f1f3a;
    }

    .page-9vndwin__faq-container {
      max-width: 900px;
      margin: 50px auto 0;
    }

    .page-9vndwin__faq-item {
      background-color: #2a2a4a;
      border-radius: 8px;
      margin-bottom: 15px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
      overflow: hidden;
    }

    .page-9vndwin__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      background-color: #2a2a4a;
      color: #e0e0e0;
      font-size: 1.2rem;
      font-weight: bold;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-9vndwin__faq-question:hover {
      background-color: #3a3a5a;
    }

    .page-9vndwin__faq-question-title {
      margin: 0;
      color: #e0e0e0;
      font-size: 1.2rem;
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-9vndwin__faq-toggle {
      font-size: 1.8rem;
      font-weight: bold;
      color: #e94560;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent span from blocking click event */
    }

    .page-9vndwin__faq-item.active .page-9vndwin__faq-toggle {
      transform: rotate(45deg); /* Rotate for minus sign effect */
    }

    .page-9vndwin__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      background-color: #3a3a5a;
      color: #cccccc;
      font-size: 1rem;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-9vndwin__faq-item.active .page-9vndwin__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-9vndwin__faq-answer p {
      margin: 0;
    }

    /* Final CTA Section */
    .page-9vndwin__final-cta {
      padding: 80px 0;
      background-color: #0f0f1d;
      text-align: center;
    }

    .page-9vndwin__cta-button--large {
      padding: 18px 40px;
      font-size: 1.3rem;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-9vndwin__main-title {
        font-size: 2.8rem;
      }
      .page-9vndwin__hero-description {
        font-size: 1.2rem;
      }
      .page-9vndwin__section-title {
        font-size: 2rem;
      }
    }

    @media (max-width: 768px) {
      .page-9vndwin {
        padding: 0 15px;
      }

      .page-9vndwin__hero-section {
        min-height: 400px;
        padding-top: 10px; /* Required padding for fixed header */
        padding-bottom: 30px;
      }

      .page-9vndwin__main-title {
        font-size: 2.2rem;
      }

      .page-9vndwin__hero-description {
        font-size: 1.1rem;
      }

      .page-9vndwin__cta-button {
        padding: 12px 25px;
        font-size: 1rem;
      }

      .page-9vndwin__section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
      }

      .page-9vndwin__section-intro {
        font-size: 1rem;
        margin-bottom: 40px;
      }

      .page-9vndwin__why-choose-us,
      .page-9vndwin__game-categories,
      .page-9vndwin__promotions,
      .page-9vndwin__registration-guide,
      .page-9vndwin__faq-section,
      .page-9vndwin__final-cta {
        padding: 40px 0;
      }

      .page-9vndwin__features-grid,
      .page-9vndwin__game-grid,
      .page-9vndwin__promo-grid,
      .page-9vndwin__guide-steps {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
      }

      .page-9vndwin__feature-item,
      .page-9vndwin__game-card,
      .page-9vndwin__promo-card,
      .page-9vndwin__guide-step-item {
        padding: 20px;
        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-9vndwin__feature-icon,
      .page-9vndwin__guide-step-icon {
        width: 100px; /* Adjusted for mobile */
      }

      .page-9vndwin__feature-title,
      .page-9vndwin__game-title,
      .page-9vndwin__promo-title,
      .page-9vndwin__guide-step-title {
        font-size: 1.5rem;
      }

      .page-9vndwin__faq-question {
        padding: 15px 20px;
        font-size: 1.1rem;
      }

      .page-9vndwin__faq-question-title {
        font-size: 1.1rem;
      }

      .page-9vndwin__faq-toggle {
        font-size: 1.5rem;
      }

      .page-9vndwin__faq-answer {
        padding: 0 20px;
      }

      .page-9vndwin__faq-item.active .page-9vndwin__faq-answer {
        padding: 15px 20px !important;
      }

      .page-9vndwin__cta-button--large {
        padding: 15px 30px;
        font-size: 1.1rem;
      }

      /* Floating CTA Button - Mobile specific */
      .page-9vndwin__floating-cta-mobile {
        display: block; /* Show on mobile */
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1000;
        width: calc(100% - 40px); /* Account for padding on sides */
        max-width: 400px;
        box-sizing: border-box;
      }

      .page-9vndwin__floating-button {
        display: block;
        background-color: #e94560; /* Accent color */
        color: #ffffff;
        padding: 15px 20px;
        border-radius: 8px;
        text-decoration: none;
        font-size: 1.1rem;
        font-weight: bold;
        text-align: center;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
        transition: background-color 0.3s ease;
        width: 100%;
        box-sizing: border-box;
      }

      .page-9vndwin__floating-button:hover {
        background-color: #d1324c;
      }
      
      /* Image responsive styles for mobile */
      .page-9vndwin__hero-image,
      .page-9vndwin__feature-icon,
      .page-9vndwin__game-image,
      .page-9vndwin__promo-image,
      .page-9vndwin__guide-step-icon {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-9vndwin__hero-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-9vndwin__main-title {
        font-size: 1.8rem;
      }
      .page-9vndwin__hero-description {
        font-size: 1rem;
      }
      .page-9vndwin__cta-button {
        font-size: 0.9rem;
        padding: 10px 20px;
      }
      .page-9vndwin__section-title {
        font-size: 1.5rem;
      }
      .page-9vndwin__floating-button {
        font-size: 1rem;
        padding: 12px 15px;
      }
    }