:root {
      --page-keo-nha-cai-5--primary-color: #f7b731; /* Màu vàng cam */
      --page-keo-nha-cai-5--secondary-color: #2c3e50; /* Màu xanh đậm */
      --page-keo-nha-cai-5--accent-color: #e74c3c; /* Màu đỏ */
      --page-keo-nha-cai-5--text-color: #333;
      --page-keo-nha-cai-5--light-bg: #f8f8f8;
      --page-keo-nha-cai-5--dark-bg: #222;
      --page-keo-nha-cai-5--white: #ffffff;
      --page-keo-nha-cai-5--border-radius: 8px;
    }

    .page-keo-nha-cai-5 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-keo-nha-cai-5--text-color);
      background-color: var(--page-keo-nha-cai-5--light-bg);
      padding-top: 10px; /* Nhẹ nhàng đẩy xuống dưới header */
    }

    .page-keo-nha-cai-5__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-keo-nha-cai-5__section {
      padding: 40px 0;
      margin-bottom: 20px;
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      background-color: var(--page-keo-nha-cai-5--white);
    }

    .page-keo-nha-cai-5__section--dark {
      background-color: var(--page-keo-nha-cai-5--secondary-color);
      color: var(--page-keo-nha-cai-5--white);
    }

    .page-keo-nha-cai-5__section-title {
      text-align: center;
      color: var(--page-keo-nha-cai-5--secondary-color);
      margin-bottom: 40px;
      font-size: 2.5em;
      font-weight: bold;
    }

    .page-keo-nha-cai-5__section--dark .page-keo-nha-cai-5__section-title {
      color: var(--page-keo-nha-cai-5--primary-color);
    }

    .page-keo-nha-cai-5__hero-section {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, var(--page-keo-nha-cai-5--secondary-color), var(--page-keo-nha-cai-5--dark-bg));
      color: var(--page-keo-nha-cai-5--white);
      margin-bottom: 20px;
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    }

    .page-keo-nha-cai-5__hero-title {
      font-size: 3.5em;
      margin-bottom: 20px;
      color: var(--page-keo-nha-cai-5--primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-keo-nha-cai-5__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-keo-nha-cai-5__button {
      display: inline-block;
      background-color: var(--page-keo-nha-cai-5--primary-color);
      color: var(--page-keo-nha-cai-5--secondary-color);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    }

    .page-keo-nha-cai-5__button:hover {
      background-color: #ffc107; /* Màu vàng sáng hơn */
      transform: translateY(-2px);
    }

    .page-keo-nha-cai-5__features-grid,
    .page-keo-nha-cai-5__games-grid,
    .page-keo-nha-cai-5__providers-grid,
    .page-keo-nha-cai-5__payments-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      padding: 0;
      list-style: none;
      margin: 0;
      justify-content: center;
    }

    .page-keo-nha-cai-5__feature-item,
    .page-keo-nha-cai-5__game-card,
    .page-keo-nha-cai-5__provider-card,
    .page-keo-nha-cai-5__payment-card {
      background-color: var(--page-keo-nha-cai-5--light-bg);
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      padding: 25px;
      text-align: center;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      box-sizing: border-box;
      border: 1px solid #eee;
    }

    .page-keo-nha-cai-5__feature-item:hover,
    .page-keo-nha-cai-5__game-card:hover,
    .page-keo-nha-cai-5__provider-card:hover,
    .page-keo-nha-cai-5__payment-card:hover {
      transform: translateY(-5px);
    }

    .page-keo-nha-cai-5__feature-icon,
    .page-keo-nha-cai-5__game-image,
    .page-keo-nha-cai-5__provider-logo,
    .page-keo-nha-cai-5__payment-logo {
      width: 100%;
      max-width: 250px;
      height: auto;
      margin-bottom: 15px;
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      object-fit: contain;
      box-sizing: border-box;
    }

    .page-keo-nha-cai-5__game-image,
    .page-keo-nha-cai-5__provider-logo,
    .page-keo-nha-cai-5__payment-logo {
        max-width: 180px; /* Slightly smaller for logos */
    }

    .page-keo-nha-cai-5__feature-title,
    .page-keo-nha-cai-5__game-title,
    .page-keo-nha-cai-5__provider-name,
    .page-keo-nha-cai-5__payment-name {
      font-size: 1.3em;
      color: var(--page-keo-nha-cai-5--secondary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-keo-nha-cai-5__feature-description {
      font-size: 0.95em;
      color: #555;
    }

    .page-keo-nha-cai-5__promotions-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      padding: 0;
      list-style: none;
      margin: 0;
    }

    .page-keo-nha-cai-5__promotion-card {
      background-color: var(--page-keo-nha-cai-5--white);
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      width: 100%;
      max-width: 380px;
      overflow: hidden;
      text-align: left;
      transition: transform 0.3s ease;
      box-sizing: border-box;
      border: 1px solid #eee;
    }

    .page-keo-nha-cai-5__promotion-card:hover {
      transform: translateY(-5px);
    }

    .page-keo-nha-cai-5__promotion-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      box-sizing: border-box;
    }

    .page-keo-nha-cai-5__promotion-content {
      padding: 20px;
    }

    .page-keo-nha-cai-5__promotion-title {
      font-size: 1.5em;
      color: var(--page-keo-nha-cai-5--primary-color);
      margin-bottom: 10px;
    }

    .page-keo-nha-cai-5__promotion-description {
      font-size: 1em;
      color: var(--page-keo-nha-cai-5--text-color);
      margin-bottom: 15px;
    }

    .page-keo-nha-cai-5__promotion-link {
      color: var(--page-keo-nha-cai-5--accent-color);
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
    }

    .page-keo-nha-cai-5__promotion-link:hover {
      color: #c0392b;
    }

    .page-keo-nha-cai-5__faq-section {
      background-color: var(--page-keo-nha-cai-5--light-bg);
    }

    .page-keo-nha-cai-5__faq-item {
      background-color: var(--page-keo-nha-cai-5--white);
      border: 1px solid #ddd;
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    }

    .page-keo-nha-cai-5__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 25px;
      cursor: pointer;
      background-color: var(--page-keo-nha-cai-5--white);
      border-bottom: 1px solid #eee;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-keo-nha-cai-5__faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-keo-nha-cai-5__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-keo-nha-cai-5--secondary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-keo-nha-cai-5__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-keo-nha-cai-5--primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
      line-height: 1;
    }

    .page-keo-nha-cai-5__faq-item.active .page-keo-nha-cai-5__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
    }

    .page-keo-nha-cai-5__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-keo-nha-cai-5--text-color);
    }

    .page-keo-nha-cai-5__faq-item.active .page-keo-nha-cai-5__faq-answer {
      max-height: 2000px !important; /* Sufficiently large value */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-keo-nha-cai-5__cta-section {
      text-align: center;
      padding: 60px 20px;
      background-color: var(--page-keo-nha-cai-5--secondary-color);
      color: var(--page-keo-nha-cai-5--white);
      border-radius: var(--page-keo-nha-cai-5--border-radius);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .page-keo-nha-cai-5__cta-title {
      font-size: 2.5em;
      margin-bottom: 20px;
      color: var(--page-keo-nha-cai-5--primary-color);
    }

    .page-keo-nha-cai-5__cta-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    @media (max-width: 768px) {
      .page-keo-nha-cai-5__hero-title {
        font-size: 2.5em;
      }

      .page-keo-nha-cai-5__hero-subtitle {
        font-size: 1.2em;
      }

      .page-keo-nha-cai-5__section-title {
        font-size: 2em;
      }

      .page-keo-nha-cai-5__features-grid,
      .page-keo-nha-cai-5__games-grid,
      .page-keo-nha-cai-5__providers-grid,
      .page-keo-nha-cai-5__payments-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 15px !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-keo-nha-cai-5__feature-item,
      .page-keo-nha-cai-5__game-card,
      .page-keo-nha-cai-5__provider-card,
      .page-keo-nha-cai-5__payment-card,
      .page-keo-nha-cai-5__promotion-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 20px !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-keo-nha-cai-5__feature-description,
      .page-keo-nha-cai-5__promotion-description {
          font-size: 0.9em;
      }

      .page-keo-nha-cai-5__game-image,
      .page-keo-nha-cai-5__provider-logo,
      .page-keo-nha-cai-5__payment-logo,
      .page-keo-nha-cai-5__promotion-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      .page-keo-nha-cai-5__promotions-list {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        padding: 0 15px !important;
      }

      .page-keo-nha-cai-5__faq-question {
        padding: 15px 20px;
      }

      .page-keo-nha-cai-5__faq-question h3 {
        font-size: 1.1em;
      }

      .page-keo-nha-cai-5__faq-answer {
        padding: 0 20px;
      }

      .page-keo-nha-cai-5__faq-item.active .page-keo-nha-cai-5__faq-answer {
        padding: 15px 20px !important;
      }

      .page-keo-nha-cai-5__cta-title {
        font-size: 2em;
      }

      .page-keo-nha-cai-5__cta-description {
        font-size: 1em;
      }
    }

    @media (max-width: 480px) {
        .page-keo-nha-cai-5__hero-title {
            font-size: 2em;
        }
        .page-keo-nha-cai-5__section-title {
            font-size: 1.8em;
        }
        .page-keo-nha-cai-5__button {
            padding: 12px 25px;
            font-size: 1em;
        }
    }