:root {
      --page-66king-primary-color: #e44d26; /* Một màu cam đỏ nổi bật */
      --page-66king-secondary-color: #f7a000; /* Một màu vàng cam */
      --page-66king-dark-background: #1a1a1a;
      --page-66king-light-background: #2a2a2a;
      --page-66king-text-color: #ffffff;
      --page-66king-accent-color: #4CAF50; /* Màu xanh lá cho nút */
      --page-66king-border-radius: 8px;
      --page-66king-padding-section: 40px 20px;
      --page-66king-gap: 20px;
    }

    /* Base styles for the page container */
    .page-66king {
      font-family: 'Arial', sans-serif;
      color: var(--page-66king-text-color);
      background-color: var(--page-66king-dark-background);
      line-height: 1.6;
      overflow-x: hidden;
      padding-bottom: 80px; /* Space for floating buttons */
    }

    .page-66king__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    /* Hero Section */
    .page-66king__hero-section {
      position: relative;
      background-color: var(--page-66king-dark-background);
      color: var(--page-66king-text-color);
      text-align: center;
      padding: 10px 0 60px 0; /* Small padding-top as body handles header offset */
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 400px;
    }

    .page-66king__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.4;
      z-index: 1;
    }

    .page-66king__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px;
      max-width: 900px;
    }

    .page-66king__hero-title {
      font-size: 2.8em;
      margin-bottom: 10px;
      color: var(--page-66king-primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: #ccc;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    /* Floating Buttons */
    .page-66king__floating-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(0, 0, 0, 0.8);
      padding: 10px 15px;
      display: flex;
      justify-content: space-around;
      align-items: center;
      z-index: 1000;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.5);
      box-sizing: border-box;
    }

    .page-66king__floating-button {
      flex: 1;
      margin: 0 5px;
      padding: 12px 10px;
      border: none;
      border-radius: var(--page-66king-border-radius);
      font-size: 1.1em;
      font-weight: bold;
      cursor: pointer;
      text-align: center;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-sizing: border-box;
      white-space: nowrap; /* Prevent text wrapping */
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .page-66king__floating-button--register {
      background-color: var(--page-66king-primary-color);
      color: var(--page-66king-text-color);
    }

    .page-66king__floating-button--register:hover {
      background-color: #c0392b;
      transform: translateY(-2px);
    }

    .page-66king__floating-button--login {
      background-color: var(--page-66king-secondary-color);
      color: var(--page-66king-text-color);
    }

    .page-66king__floating-button--login:hover {
      background-color: #e67e22;
      transform: translateY(-2px);
    }

    /* Game Categories Section */
    .page-66king__game-categories {
      padding: var(--page-66king-padding-section);
      background-color: var(--page-66king-light-background);
      text-align: center;
    }

    .page-66king__section-title {
      font-size: 2.2em;
      color: var(--page-66king-primary-color);
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-66king-secondary-color);
      border-radius: 2px;
    }

    .page-66king__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--page-66king-gap);
      margin-top: 30px;
    }

    .page-66king__game-card {
      background-color: var(--page-66king-dark-background);
      border-radius: var(--page-66king-border-radius);
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      text-align: left;
    }

    .page-66king__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-66king__game-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 200px; /* Fixed height for consistency */
    }

    .page-66king__game-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      max-width: 100%;
    }

    .page-66king__game-info {
      padding: 15px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .page-66king__game-title {
      font-size: 1.4em;
      color: var(--page-66king-primary-color);
      margin-bottom: 10px;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__game-description {
      font-size: 0.95em;
      color: #ccc;
      flex-grow: 1;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    /* Promotions Section */
    .page-66king__promotions-section {
      padding: var(--page-66king-padding-section);
      background-color: var(--page-66king-dark-background);
      text-align: center;
    }

    .page-66king__promotion-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: var(--page-66king-gap);
      margin-top: 30px;
    }

    .page-66king__promotion-item {
      background-color: var(--page-66king-light-background);
      border-radius: var(--page-66king-border-radius);
      padding: 25px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      text-align: left;
      transition: background-color 0.3s ease;
    }

    .page-66king__promotion-item:hover {
      background-color: #3a3a3a;
    }

    .page-66king__promotion-title {
      font-size: 1.5em;
      color: var(--page-66king-secondary-color);
      margin-bottom: 10px;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__promotion-description {
      color: #ddd;
      font-size: 1em;
      margin-bottom: 15px;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    /* Why Choose 66king Section */
    .page-66king__why-choose-section {
      padding: var(--page-66king-padding-section);
      background-color: var(--page-66king-light-background);
      text-align: center;
    }

    .page-66king__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--page-66king-gap);
      margin-top: 30px;
    }

    .page-66king__feature-card {
      background-color: var(--page-66king-dark-background);
      border-radius: var(--page-66king-border-radius);
      padding: 25px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
    }

    .page-66king__feature-card:hover {
      transform: translateY(-5px);
    }

    .page-66king__feature-icon {
      margin-bottom: 15px;
      width: 100px;
      height: auto;
      display: block;
      margin-left: auto;
      margin-right: auto;
      max-width: 100%;
    }

    .page-66king__feature-title {
      font-size: 1.3em;
      color: var(--page-66king-primary-color);
      margin-bottom: 10px;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__feature-description {
      color: #ccc;
      font-size: 0.95em;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    /* Payment & Providers Section */
    .page-66king__partners-section {
      padding: var(--page-66king-padding-section);
      background-color: var(--page-66king-dark-background);
      text-align: center;
    }

    .page-66king__partners-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: var(--page-66king-gap);
      margin-top: 30px;
      align-items: center;
      justify-items: center;
    }

    .page-66king__partner-logo-wrapper {
      background-color: var(--page-66king-light-background);
      padding: 15px;
      border-radius: var(--page-66king-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      width: 100%;
      height: 100px; /* Fixed height for logos */
      display: flex;
      align-items: center;
      justify-content: center;
      box-sizing: border-box;
      max-width: 200px; /* Max width for individual logo item */
    }

    .page-66king__partner-logo-wrapper:hover {
      transform: scale(1.05);
    }

    .page-66king__partner-logo {
      max-width: 100%;
      max-height: 70px; /* Adjust based on wrapper height */
      height: auto;
      display: block;
    }

    /* FAQ Section */
    .page-66king__faq-section {
      padding: var(--page-66king-padding-section);
      background-color: var(--page-66king-light-background);
    }

    .page-66king__faq-list {
      margin-top: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-66king__faq-item {
      background-color: var(--page-66king-dark-background);
      border-radius: var(--page-66king-border-radius);
      margin-bottom: 15px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
      overflow: hidden;
    }

    .page-66king__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--page-66king-primary-color);
      color: var(--page-66king-text-color);
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      pointer-events: none; /* Prevent h3 from blocking click */
      color: var(--page-66king-text-color); /* Ensure contrast */
    }

    .page-66king__faq-question:hover {
      background-color: #c0392b;
    }

    .page-66king__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-66king__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      background-color: var(--page-66king-light-background);
      color: #ddd;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      box-sizing: border-box;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__faq-item.active .page-66king__faq-answer {
      max-height: 2000px !important; /* Sufficiently large value */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-66king__faq-item.active .page-66king__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
    }

    /* Call to Action Section */
    .page-66king__cta-section {
      padding: var(--page-66king-padding-section);
      background-color: var(--page-66king-dark-background);
      text-align: center;
    }

    .page-66king__cta-title {
      font-size: 2em;
      color: var(--page-66king-secondary-color);
      margin-bottom: 20px;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__cta-description {
      font-size: 1.1em;
      color: #ccc;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    .page-66king__cta-button {
      display: inline-block;
      background-color: var(--page-66king-accent-color);
      color: var(--page-66king-text-color);
      padding: 15px 30px;
      border-radius: var(--page-66king-border-radius);
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .page-66king__cta-button:hover {
      background-color: #4CAF50; /* Slightly darker green */
      transform: translateY(-3px);
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-66king__hero-title {
        font-size: 2.2em;
      }

      .page-66king__hero-subtitle {
        font-size: 1.1em;
      }

      .page-66king__section-title {
        font-size: 1.8em;
      }

      .page-66king__game-grid,
      .page-66king__promotion-list,
      .page-66king__features-grid,
      .page-66king__partners-grid {
        grid-template-columns: 1fr;
      }

      .page-66king__floating-buttons {
        flex-direction: column;
        padding: 10px;
      }

      .page-66king__floating-button {
        width: 100% !important;
        margin: 5px 0;
        padding: 12px 10px; /* Adjust padding for smaller screens */
      }

      .page-66king__game-card,
      .page-66king__promotion-item,
      .page-66king__feature-card,
      .page-66king__partner-logo-wrapper,
      .page-66king__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px !important; /* Adjust padding for smaller screens */
      }

      .page-66king__game-image-wrapper {
        height: 180px; /* Adjust image height for mobile */
      }

      .page-66king__game-title,
      .page-66king__promotion-title,
      .page-66king__feature-title {
        font-size: 1.2em;
      }

      .page-66king__game-description,
      .page-66king__promotion-description,
      .page-66king__feature-description {
        font-size: 0.9em;
      }

      .page-66king__faq-question {
        padding: 12px 15px;
        font-size: 1em;
      }

      .page-66king__faq-answer {
        padding: 15px !important;
      }

      .page-66king__cta-title {
        font-size: 1.8em;
      }

      .page-66king__cta-description {
        font-size: 1em;
      }

      .page-66king__cta-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      /* Image responsive for mobile */
      .page-66king img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-66king__game-image-wrapper,
      .page-66king__feature-icon,
      .page-66king__partner-logo-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-66king__hero-title {
        font-size: 1.8em;
      }

      .page-66king__hero-subtitle {
        font-size: 1em;
      }
      .page-66king__floating-button {
        font-size: 1em; /* Further reduce font size for very small screens */
      }
    }