:root {
      --page-tr88-primary-color: #e44d26; /* Cam đỏ */
      --page-tr88-secondary-color: #333; /* Đen xám */
      --page-tr88-accent-color: #f7b32b; /* Vàng cam */
      --page-tr88-text-color: #ffffff; /* Trắng */
      --page-tr88-background-color: #1a1a1a; /* Nền tối */
      --page-tr88-card-background: #2a2a2a; /* Nền thẻ */
      --page-tr88-border-color: #444; /* Viền xám */
      --page-tr88-highlight-color: #f0f0f0; /* Nổi bật */
    }

    .page-tr88 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-tr88-text-color);
      background-color: var(--page-tr88-background-color);
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }

    .page-tr88__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-tr88__hero-section {
      position: relative;
      width: 100%;
      min-height: 450px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: var(--page-tr88-text-color);
      overflow: hidden;
      padding-top: 10px; /* Desktop: Account for fixed header */
      box-sizing: border-box;
    }

    .page-tr88__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
      filter: brightness(0.6);
      max-width: 100%; /* Ensure responsiveness */
      height: auto; /* Ensure responsiveness */
      box-sizing: border-box; /* Ensure responsiveness */
    }

    .page-tr88__hero-content {
      position: relative;
      z-index: 2;
      max-width: 800px;
      padding: 20px;
      background-color: rgba(0, 0, 0, 0.4);
      border-radius: 10px;
    }

    .page-tr88__hero-title {
      font-size: 3.2em;
      margin-bottom: 15px;
      color: var(--page-tr88-accent-color);
      line-height: 1.2;
    }

    .page-tr88__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: 30px;
    }

    .page-tr88__button {
      display: inline-block;
      background-color: var(--page-tr88-primary-color);
      color: var(--page-tr88-text-color);
      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-tr88__button:hover {
      background-color: #c93a1b;
      transform: translateY(-2px);
    }

    .page-tr88__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-tr88-accent-color);
      color: var(--page-tr88-secondary-color);
      padding: 15px 25px;
      border-radius: 50px;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-decoration: none;
    }

    .page-tr88__floating-button:hover {
      background-color: #e0a221;
      transform: translateY(-3px);
    }

    .page-tr88__section {
      padding: 60px 0;
      text-align: center;
    }

    .page-tr88__section-dark {
      background-color: var(--page-tr88-secondary-color);
    }

    .page-tr88__section-title {
      font-size: 2.5em;
      margin-bottom: 40px;
      color: var(--page-tr88-accent-color);
    }

    .page-tr88__text-block {
      max-width: 900px;
      margin: 0 auto 40px auto;
      font-size: 1.1em;
      color: var(--page-tr88-highlight-color);
    }

    .page-tr88__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-tr88__game-card {
      background-color: var(--page-tr88-card-background);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: left;
      border: 1px solid var(--page-tr88-border-color);
      box-sizing: border-box; /* Ensure padding/border included in width */
    }

    .page-tr88__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    }

    .page-tr88__game-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-tr88__game-card-content {
      padding: 25px;
    }

    .page-tr88__game-card-title {
      font-size: 1.5em;
      margin-bottom: 10px;
      color: var(--page-tr88-primary-color);
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__game-card-description {
      font-size: 0.95em;
      color: var(--page-tr88-highlight-color);
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__feature-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      list-style: none;
      padding: 0;
      margin-top: 40px;
      text-align: left;
    }

    .page-tr88__feature-item {
      background-color: var(--page-tr88-card-background);
      padding: 30px;
      border-radius: 12px;
      border: 1px solid var(--page-tr88-border-color);
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
      box-sizing: border-box;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__feature-item-title {
      font-size: 1.4em;
      color: var(--page-tr88-accent-color);
      margin-bottom: 15px;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__feature-item-text {
      color: var(--page-tr88-highlight-color);
      font-size: 1em;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__faq-section {
      padding: 60px 0;
      background-color: var(--page-tr88-background-color);
      text-align: center;
    }

    .page-tr88__faq-list {
      max-width: 900px;
      margin: 40px auto 0 auto;
      text-align: left;
    }

    .page-tr88__faq-item {
      background-color: var(--page-tr88-card-background);
      border: 1px solid var(--page-tr88-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      box-sizing: border-box; /* Ensure padding/border included in width */
    }

    .page-tr88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: var(--page-tr88-primary-color);
      color: var(--page-tr88-text-color);
      font-size: 1.2em;
      font-weight: bold;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-tr88-text-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__faq-question:hover {
      background-color: #c93a1b;
    }

    .page-tr88__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent span from blocking click event */
      flex-shrink: 0; /* Prevent icon from shrinking */
      margin-left: 10px; /* Space between text and icon */
    }

    .page-tr88__faq-item.active .page-tr88__faq-toggle {
      transform: rotate(45deg);
    }
    
    .page-tr88__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      background-color: var(--page-tr88-card-background);
      color: var(--page-tr88-highlight-color);
      font-size: 1em;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      word-wrap: break-word; /* Ensure text wraps */
      overflow-wrap: break-word;
      word-break: break-word;
    }

    .page-tr88__faq-item.active .page-tr88__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-tr88__hero-title {
        font-size: 2.8em;
      }
      .page-tr88__hero-subtitle {
        font-size: 1.3em;
      }
      .page-tr88__section-title {
        font-size: 2.2em;
      }
      .page-tr88__game-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      }
      .page-tr88__feature-list {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .page-tr88__hero-section {
        min-height: 350px;
        padding-top: 10px; /* Mobile: Account for fixed header */
      }
      .page-tr88__hero-title {
        font-size: 2.2em;
      }
      .page-tr88__hero-subtitle {
        font-size: 1.1em;
      }
      .page-tr88__section {
        padding: 40px 0;
      }
      .page-tr88__section-title {
        font-size: 2em;
        margin-bottom: 30px;
      }
      .page-tr88__text-block {
        font-size: 1em;
        margin-bottom: 30px;
      }
      .page-tr88__game-grid {
        grid-template-columns: 1fr; /* Stack on mobile */
        gap: 20px;
      }
      .page-tr88__game-card-image {
        height: 180px;
      }
      .page-tr88__game-card-title {
        font-size: 1.3em;
      }
      .page-tr88__feature-list {
        grid-template-columns: 1fr !important; /* Stack on mobile */
        gap: 20px;
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }
      .page-tr88__feature-item {
        padding: 25px;
        width: 100% !important;
        max-width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-tr88__faq-list {
        padding: 0 10px;
      }
      .page-tr88__faq-question {
        padding: 15px 20px;
        font-size: 1.1em;
      }
      .page-tr88__faq-question h3 {
        font-size: 1.1em;
      }
      .page-tr88__faq-answer {
        padding: 0 20px;
      }
      .page-tr88__faq-item.active .page-tr88__faq-answer {
        padding: 15px 20px !important;
      }
      .page-tr88__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
    }

    @media (max-width: 480px) {
      .page-tr88__hero-title {
        font-size: 1.8em;
      }
      .page-tr88__hero-subtitle {
        font-size: 1em;
      }
      .page-tr88__button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-tr88__section-title {
        font-size: 1.8em;
      }
    }