:root {
      --page-bong88-primary-color: #e44d26; /* Cam đỏ */
      --page-bong88-secondary-color: #333; /* Xám đen */
      --page-bong88-accent-color: #f7b731; /* Vàng cam */
      --page-bong88-background-color: #f4f4f4; /* Xám nhạt */
      --page-bong88-text-color: #333; /* Xám đen */
      --page-bong88-light-text-color: #fff; /* Trắng */
      --page-bong88-border-radius: 8px;
      --page-bong88-transition-speed: 0.3s;
    }

    .page-bong88 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-bong88-text-color);
      background-color: var(--page-bong88-background-color);
      padding-bottom: 80px; /* Space for floating button */
    }

    .page-bong88__section {
      padding: 40px 15px;
      margin: 0 auto;
      max-width: 1200px;
    }

    .page-bong88__hero-section {
      position: relative;
      text-align: center;
      color: var(--page-bong88-light-text-color);
      padding-top: 10px; /* Desktop */
      padding-bottom: 50px;
      background-color: var(--page-bong88-secondary-color);
      overflow: hidden;
    }

    .page-bong88__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
      filter: brightness(0.6); /* Slightly darken background image */
      max-width: 100%;
      height: auto;
    }
    
    .page-bong88__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-bong88__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-bong88-accent-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-bong88__hero-subtitle {
      font-size: 1.4em;
      margin-bottom: 30px;
      color: var(--page-bong88-light-text-color);
    }

    .page-bong88__cta-button {
      display: inline-block;
      background-color: var(--page-bong88-primary-color);
      color: var(--page-bong88-light-text-color);
      padding: 15px 30px;
      border-radius: var(--page-bong88-border-radius);
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color var(--page-bong88-transition-speed) ease;
      border: none;
      cursor: pointer;
    }

    .page-bong88__cta-button:hover {
      background-color: #c73c1c;
    }

    .page-bong88__floating-cta {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      background-color: var(--page-bong88-accent-color);
      color: var(--page-bong88-text-color);
      padding: 12px 25px;
      border-radius: 50px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      text-align: center;
      animation: page-bong88-pulse 2s infinite;
      transition: background-color var(--page-bong88-transition-speed) ease;
      white-space: nowrap;
    }

    .page-bong88__floating-cta:hover {
      background-color: #e6a020;
    }

    @keyframes page-bong88-pulse {
      0% {
        transform: translateX(-50%) scale(1);
      }
      50% {
        transform: translateX(-50%) scale(1.05);
      }
      100% {
        transform: translateX(-50%) scale(1);
      }
    }

    .page-bong88__heading {
      text-align: center;
      font-size: 2.2em;
      margin-bottom: 30px;
      color: var(--page-bong88-primary-color);
      position: relative;
      padding-bottom: 10px;
    }

    .page-bong88__heading::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-bong88-accent-color);
      border-radius: 2px;
    }

    .page-bong88__text-block {
      background-color: var(--page-bong88-light-text-color);
      padding: 30px;
      border-radius: var(--page-bong88-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      margin-bottom: 30px;
    }

    .page-bong88__text-block p {
      margin-bottom: 15px;
      font-size: 1.05em;
    }

    .page-bong88__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .page-bong88__game-card {
      background-color: var(--page-bong88-light-text-color);
      border-radius: var(--page-bong88-border-radius);
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      text-align: center;
      transition: transform var(--page-bong88-transition-speed) ease, box-shadow var(--page-bong88-transition-speed) ease;
    }

    .page-bong88__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    }

    .page-bong88__game-image-wrapper {
      width: 100%;
      height: 200px;
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center;
      background-color: #eee;
    }

    .page-bong88__game-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      max-width: 100%;
      height: auto;
    }

    .page-bong88__game-content {
      padding: 20px;
    }

    .page-bong88__game-title {
      font-size: 1.5em;
      margin-bottom: 10px;
      color: var(--page-bong88-primary-color);
    }

    .page-bong88__game-description {
      font-size: 0.95em;
      color: #666;
      margin-bottom: 20px;
    }

    .page-bong88__guide-list {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      justify-content: center;
    }

    .page-bong88__guide-item {
      background-color: var(--page-bong88-light-text-color);
      padding: 25px;
      border-radius: var(--page-bong88-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      flex: 1 1 calc(33% - 40px);
      min-width: 280px;
      text-align: center;
    }

    .page-bong88__guide-item-title {
      font-size: 1.4em;
      color: var(--page-bong88-primary-color);
      margin-bottom: 15px;
    }

    .page-bong88__guide-item-text {
      font-size: 1em;
      color: #555;
    }

    .page-bong88__faq-container {
      background-color: var(--page-bong88-light-text-color);
      padding: 30px;
      border-radius: var(--page-bong88-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .page-bong88__faq-item {
      border-bottom: 1px solid #eee;
      margin-bottom: 10px;
    }

    .page-bong88__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
    }

    .page-bong88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 0;
      cursor: pointer;
      user-select: none;
      font-size: 1.1em;
      font-weight: bold;
      color: var(--page-bong88-secondary-color);
      transition: color var(--page-bong88-transition-speed) ease;
    }

    .page-bong88__faq-question:hover {
      color: var(--page-bong88-primary-color);
    }

    .page-bong88__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-bong88__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 10px;
      transition: transform var(--page-bong88-transition-speed) ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-bong88__faq-item.active .page-bong88__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
    }

    .page-bong88__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: #555;
      font-size: 0.95em;
    }

    .page-bong88__faq-item.active .page-bong88__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-bong88__hero-section {
        padding-top: 10px; /* Mobile */
        padding-bottom: 30px;
      }
      .page-bong88__hero-title {
        font-size: 2em;
      }
      .page-bong88__hero-subtitle {
        font-size: 1.1em;
      }
      .page-bong88__section {
        padding: 30px 10px;
      }
      .page-bong88__heading {
        font-size: 1.8em;
      }
      .page-bong88__floating-cta {
        padding: 10px 20px;
        font-size: 1em;
      }
      .page-bong88__game-grid {
        grid-template-columns: 1fr;
      }
      .page-bong88__guide-item {
        flex: 1 1 100%;
      }
      .page-bong88__game-image,
      .page-bong88__hero-background {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-bong88__game-image-wrapper {
        height: 180px;
      }
    }