
    /* CSS样式必须内联在<style>标签中，放在<head>标签内 */
    /* 所有CSS类名必须使用BEM命名规则：.page-66b__element-name */
    /* 避免使用!important，除非特定场景如移动端响应式 */

    :root {
      --page-66b-primary-color: #e63946; /* Đỏ rực rỡ */
      --page-66b-secondary-color: #1a1a2e; /* Xanh đậm */
      --page-66b-text-color: #f1faee; /* Trắng ngà */
      --page-66b-background-light: #457b9d; /* Xanh nhạt */
      --page-66b-background-dark: #1d3557; /* Xanh đậm hơn */
      --page-66b-accent-color: #a8dadc; /* Xanh ngọc */
      --page-66b-border-radius: 8px;
      --page-66b-box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-66b {
      font-family: 'Arial', sans-serif;
      color: var(--page-66b-text-color);
      line-height: 1.6;
      background-color: var(--page-66b-background-dark);
      padding-bottom: 50px; /* Adjust for footer */
      min-height: 100vh;
      box-sizing: border-box;
      /* Fallback padding-top if body padding is not set by shared CSS */
      padding-top: var(--header-offset, 122px); 
    }

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

    .page-66b__hero-section {
      background: linear-gradient(135deg, var(--page-66b-background-dark) 0%, var(--page-66b-secondary-color) 100%);
      padding: 60px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
      margin-bottom: 30px;
      /* Small decorative top padding as body should have the main offset from shared CSS */
      padding-top: 10px; 
      box-sizing: border-box;
    }

    .page-66b__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.3;
      z-index: 0;
      max-width: 100%; /* Important for images */
      height: auto; /* Important for images */
    }

    .page-66b__hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      background-color: rgba(0, 0, 0, 0.4);
      border-radius: var(--page-66b-border-radius);
    }

    .page-66b__hero-title {
      font-size: 2.8em;
      color: var(--page-66b-primary-color);
      margin-bottom: 15px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
      font-weight: bold;
    }

    .page-66b__hero-description {
      font-size: 1.2em;
      color: var(--page-66b-text-color);
      margin-bottom: 30px;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
    }

    .page-66b__button {
      display: inline-block;
      background-color: var(--page-66b-primary-color);
      color: var(--page-66b-text-color);
      padding: 15px 30px;
      border-radius: var(--page-66b-border-radius);
      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-66b__button:hover {
      background-color: #d62828;
      transform: translateY(-2px);
    }

    .page-66b__section {
      padding: 40px 0;
      margin-bottom: 30px;
      background-color: var(--page-66b-background-light);
      border-radius: var(--page-66b-border-radius);
      box-shadow: var(--page-66b-box-shadow);
    }

    .page-66b__section--dark {
      background-color: var(--page-66b-secondary-color);
    }

    .page-66b__section-title {
      font-size: 2.2em;
      color: var(--page-66b-primary-color);
      text-align: center;
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }

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

    .page-66b__text-block {
      font-size: 1.1em;
      text-align: justify;
      margin-bottom: 20px;
      color: var(--page-66b-text-color);
      padding: 0 20px;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
    }

    .page-66b__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      padding: 0 20px;
    }

    .page-66b__game-card {
      background-color: var(--page-66b-background-dark);
      border-radius: var(--page-66b-border-radius);
      overflow: hidden;
      box-shadow: var(--page-66b-box-shadow);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box; /* Important for grid items */
    }

    .page-66b__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    }

    .page-66b__game-image-wrapper {
        width: 100%;
        height: 200px; /* Fixed height for consistency */
        overflow: hidden;
        position: relative;
        box-sizing: border-box; /* Ensure padding and border are included in the element's total width and height */
    }

    .page-66b__game-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
      max-width: 100%; /* Important for images */
      height: auto; /* Important for images */
    }

    .page-66b__game-card:hover .page-66b__game-image {
      transform: scale(1.05);
    }

    .page-66b__game-content {
      padding: 20px;
    }

    .page-66b__game-title {
      font-size: 1.5em;
      color: var(--page-66b-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
      word-wrap: break-word; /* Ensure title wraps */
      overflow-wrap: break-word;
    }

    .page-66b__game-description {
      font-size: 0.95em;
      color: var(--page-66b-accent-color);
      margin-bottom: 15px;
      word-wrap: break-word; /* Ensure description wraps */
      overflow-wrap: break-word;
    }

    .page-66b__promo-section {
      background: linear-gradient(90deg, var(--page-66b-primary-color) 0%, #ff6b6b 100%);
      padding: 60px 0;
      text-align: center;
      margin-bottom: 30px;
      border-radius: var(--page-66b-border-radius);
      box-shadow: var(--page-66b-box-shadow);
    }

    .page-66b__promo-title {
      font-size: 2.5em;
      color: var(--page-66b-text-color);
      margin-bottom: 20px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
      word-wrap: break-word; /* Ensure title wraps */
      overflow-wrap: break-word;
    }

    .page-66b__promo-description {
      font-size: 1.2em;
      color: var(--page-66b-text-color);
      margin-bottom: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      padding: 0 20px;
      word-wrap: break-word; /* Ensure description wraps */
      overflow-wrap: break-word;
    }

    .page-66b__why-choose-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      list-style: none;
      padding: 0 20px;
      margin: 0;
    }

    .page-66b__why-choose-item {
      background-color: var(--page-66b-background-dark);
      padding: 25px;
      border-radius: var(--page-66b-border-radius);
      box-shadow: var(--page-66b-box-shadow);
      text-align: center;
      border-left: 5px solid var(--page-66b-primary-color);
      box-sizing: border-box; /* Important for list items */
    }

    .page-66b__why-choose-item-title {
      font-size: 1.3em;
      color: var(--page-66b-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
      word-wrap: break-word; /* Ensure title wraps */
      overflow-wrap: break-word;
    }

    .page-66b__why-choose-item-text {
      font-size: 0.95em;
      color: var(--page-66b-accent-color);
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
    }

    .page-66b__partners-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      padding: 0 20px;
      align-items: center;
      justify-content: center;
    }

    .page-66b__partner-item {
      text-align: center;
      background-color: var(--page-66b-background-dark);
      padding: 15px;
      border-radius: var(--page-66b-border-radius);
      box-shadow: var(--page-66b-box-shadow);
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Important for grid items */
    }

    .page-66b__partner-item:hover {
      transform: scale(1.05);
    }

    .page-66b__partner-image {
      max-width: 100%;
      height: 60px; /* Consistent height for partner logos */
      object-fit: contain;
      max-width: 100%; /* Important for images */
      height: auto; /* Important for images */
    }

    .page-66b__partner-name {
        margin-top: 10px;
        font-size: 0.9em;
        color: var(--page-66b-accent-color);
        font-weight: bold;
        word-wrap: break-word; /* Ensure name wraps */
        overflow-wrap: break-word;
    }

    /* FAQ Section */
    .page-66b__faq-section {
      background-color: var(--page-66b-background-light);
      padding: 40px 0;
      margin-bottom: 30px;
      border-radius: var(--page-66b-border-radius);
      box-shadow: var(--page-66b-box-shadow);
    }

    .page-66b__faq-list {
      list-style: none;
      padding: 0;
      margin: 0;
      padding: 0 20px;
    }

    .page-66b__faq-item {
      background-color: var(--page-66b-background-dark);
      margin-bottom: 15px;
      border-radius: var(--page-66b-border-radius);
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
      box-sizing: border-box; /* Important for list items */
    }

    .page-66b__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: var(--page-66b-secondary-color);
      color: var(--page-66b-text-color);
      cursor: pointer;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-66b__faq-question:hover {
      background-color: #2b2b4a;
    }

    .page-66b__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-66b-text-color);
      pointer-events: none; /* Prevents text selection from interfering with click */
      word-wrap: break-word; /* Ensure question wraps */
      overflow-wrap: break-word;
    }

    .page-66b__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 15px;
      color: var(--page-66b-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevents toggle icon from interfering with click */
      flex-shrink: 0; /* Prevent icon from shrinking */
    }

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

    .page-66b__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px; /* Initial padding for collapsed state */
      color: var(--page-66b-text-color);
      background-color: var(--page-66b-background-dark);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0; /* Initially hidden */
    }

    .page-66b__faq-item.active .page-66b__faq-answer {
      max-height: 2000px !important; /* Sufficiently large height */
      padding: 20px 25px !important; /* Expanded padding */
      opacity: 1; /* Fully visible */
    }

    .page-66b__faq-answer p {
      margin-top: 0;
      margin-bottom: 15px;
      font-size: 0.95em;
      word-wrap: break-word; /* Ensure answer wraps */
      overflow-wrap: break-word;
    }
    .page-66b__faq-answer p:last-child {
      margin-bottom: 0;
    }


    /* Responsive Design */
    @media (max-width: 768px) {
      .page-66b__hero-title {
        font-size: 2em;
      }

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

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

      .page-66b__game-grid {
        grid-template-columns: 1fr;
        padding: 0 10px;
      }

      .page-66b__why-choose-list {
        grid-template-columns: 1fr;
        padding: 0 10px;
      }

      .page-66b__partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        padding: 0 10px;
      }

      .page-66b__game-image-wrapper {
        height: 180px; /* Slightly smaller for mobile */
      }

      .page-66b__faq-list {
        padding: 0 10px;
      }

      .page-66b__faq-question {
        padding: 15px 20px;
        font-size: 1em;
      }

      .page-66b__faq-question h3 {
        font-size: 1em;
      }

      .page-66b__faq-answer {
        padding: 0 20px;
      }

      .page-66b__faq-item.active .page-66b__faq-answer {
        padding: 15px 20px !important;
      }

      /* Ensure all list items and grid items are full width */
      .page-66b__why-choose-item,
      .page-66b__partner-item,
      .page-66b__game-card,
      .page-66b__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-66b__why-choose-list,
      .page-66b__partners-grid,
      .page-66b__game-grid,
      .page-66b__faq-list {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-66b__text-block,
      .page-66b__promo-description {
        padding: 0 10px;
      }
      
      /* Image responsiveness for mobile */
      .page-66b__hero-image,
      .page-66b__game-image,
      .page-66b__partner-image {
          max-width: 100% !important;
          height: auto !important;
          box-sizing: border-box !important;
      }
      .page-66b__game-image-wrapper {
          width: 100% !important;
          max-width: 100% !important;
          overflow: hidden !important;
          box-sizing: border-box !important;
      }
    }
  