/* Reset và các biến cơ bản */
    :root {
      --page-bong99-primary-color: #e44d26; /* Cam đỏ */
      --page-bong99-secondary-color: #f7931e; /* Cam */
      --page-bong99-dark-color: #333;
      --page-bong99-light-color: #f4f4f4;
      --page-bong99-text-color: #333;
      --page-bong99-white-color: #fff;
      --page-bong99-border-radius: 8px;
      --page-bong99-box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .page-bong99 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-bong99-text-color);
      background-color: var(--page-bong99-light-color);
      overflow-x: hidden; /* Prevent horizontal scroll due to fixed elements */
    }

    /* Fixed Navigation Spacing - Hero Section */
    .page-bong99__hero-section {
      padding-top: 60px; /* Adjust based on actual header height */
      background-color: var(--page-bong99-dark-color);
      color: var(--page-bong99-white-color);
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .page-bong99__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: var(--page-bong99-border-radius);
      object-fit: cover;
    }

    .page-bong99__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-bong99__hero-title {
      font-size: 2.5em;
      margin-bottom: 10px;
      color: var(--page-bong99-white-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-bong99__hero-subtitle {
      font-size: 1.2em;
      margin-bottom: 20px;
      color: var(--page-bong99-light-color);
    }

    .page-bong99__btn {
      display: inline-block;
      background-color: var(--page-bong99-primary-color);
      color: var(--page-bong99-white-color);
      padding: 12px 25px;
      border-radius: var(--page-bong99-border-radius);
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: var(--page-bong99-box-shadow);
      margin: 5px;
      border: none;
      cursor: pointer;
    }

    .page-bong99__btn:hover {
      background-color: #c43b18;
      transform: translateY(-2px);
    }

    .page-bong99__btn--secondary {
      background-color: var(--page-bong99-secondary-color);
    }

    .page-bong99__btn--secondary:hover {
      background-color: #d17a15;
    }

    .page-bong99__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-bong99-primary-color);
      color: var(--page-bong99-white-color);
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      animation: page-bong99__pulse 2s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-bong99__floating-button:hover {
      background-color: #c43b18;
      animation: none;
    }

    @keyframes page-bong99__pulse {
      0% { transform: scale(1); box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3); }
      50% { transform: scale(1.05); box-shadow: 0 12px 20px rgba(0, 0, 0, 0.4); }
      100% { transform: scale(1); box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3); }
    }

    .page-bong99__section {
      padding: 40px 20px;
      margin: 0 auto;
      max-width: 1200px;
      background-color: var(--page-bong99-white-color);
      border-radius: var(--page-bong99-border-radius);
      box-shadow: var(--page-bong99-box-shadow);
      margin-top: 20px;
    }

    .page-bong99__section-title {
      text-align: center;
      font-size: 2em;
      margin-bottom: 30px;
      color: var(--page-bong99-dark-color);
      position: relative;
    }

    .page-bong99__section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background-color: var(--page-bong99-primary-color);
      margin: 10px auto 0;
      border-radius: 2px;
    }

    .page-bong99__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .page-bong99__card {
      background-color: var(--page-bong99-light-color);
      border-radius: var(--page-bong99-border-radius);
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
    }

    .page-bong99__card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    }

    .page-bong99__card-image-wrapper {
      width: 100%;
      height: 200px; /* Fixed height for image consistency */
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 15px;
      background-color: #eee;
    }

    .page-bong99__card-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover; /* Ensure images cover the area without distortion */
      min-height: 200px; /* Enforce minimum height */
      min-width: 200px; /* Enforce minimum width */
    }

    .page-bong99__card-title {
      font-size: 1.3em;
      color: var(--page-bong99-dark-color);
      margin-bottom: 10px;
      padding: 0 15px;
    }

    .page-bong99__card-title a {
      text-decoration: none;
      color: inherit;
      transition: color 0.3s ease;
    }

    .page-bong99__card-title a:hover {
      color: var(--page-bong99-primary-color);
    }

    .page-bong99__card-description {
      font-size: 0.9em;
      color: #666;
      padding: 0 15px;
      margin-bottom: 15px;
    }

    .page-bong99__game-providers-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); /* Smaller grid for logos */
      gap: 20px;
      justify-items: center;
      align-items: center;
      padding: 20px 0;
    }

    .page-bong99__provider-logo {
      width: 100%;
      max-width: 200px; /* Max width for logos */
      height: auto;
      object-fit: contain;
      border-radius: var(--page-bong99-border-radius);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
      transition: transform 0.2s ease;
      min-height: 100px; /* Ensure logos are not too small */
      min-width: 100px; /* Ensure logos are not too small */
    }

    .page-bong99__provider-logo:hover {
      transform: scale(1.05);
    }

    .page-bong99__text-content {
      padding: 0 15px;
      margin-bottom: 20px;
    }

    .page-bong99__text-content h2,
    .page-bong99__text-content h3 {
      color: var(--page-bong99-dark-color);
      margin-top: 25px;
      margin-bottom: 15px;
    }

    .page-bong99__text-content p {
      margin-bottom: 15px;
      color: #555;
    }

    .page-bong99__text-content ul {
      list-style: disc;
      padding-left: 25px;
      margin-bottom: 15px;
    }

    .page-bong99__text-content ol {
      list-style: decimal;
      padding-left: 25px;
      margin-bottom: 15px;
    }

    .page-bong99__text-content li {
      margin-bottom: 8px;
      color: #555;
    }

    .page-bong99__text-link {
      color: var(--page-bong99-primary-color);
      text-decoration: none;
      font-weight: bold;
    }

    .page-bong99__text-link:hover {
      text-decoration: underline;
    }

    /* FAQ Section */
    .page-bong99__faq-section {
      padding: 40px 20px;
      margin: 0 auto;
      max-width: 1200px;
      background-color: var(--page-bong99-white-color);
      border-radius: var(--page-bong99-border-radius);
      box-shadow: var(--page-bong99-box-shadow);
      margin-top: 20px;
    }

    .page-bong99__faq-item {
      border-bottom: 1px solid #eee;
      margin-bottom: 10px;
    }

    .page-bong99__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
    }

    .page-bong99__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px;
      background-color: #f9f9f9;
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      color: var(--page-bong99-dark-color);
      border-radius: var(--page-bong99-border-radius);
      transition: background-color 0.3s ease;
    }

    .page-bong99__faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-bong99__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: inherit;
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-bong99__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click on parent */
    }

    .page-bong99__faq-item.active .page-bong99__faq-toggle {
      transform: rotate(45deg); /* Visually indicate open state (plus to cross) */
    }

    .page-bong99__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;
    }

    .page-bong99__faq-item.active .page-bong99__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-bong99__hero-section {
        padding-top: 60px; /* Ensure content is below fixed header on mobile */
      }

      .page-bong99__hero-title {
        font-size: 1.8em;
      }

      .page-bong99__hero-subtitle {
        font-size: 1em;
      }

      .page-bong99__btn {
        padding: 10px 20px;
        font-size: 0.9em;
      }

      .page-bong99__section {
        padding: 20px 15px;
      }

      .page-bong99__section-title {
        font-size: 1.8em;
      }

      .page-bong99__grid {
        grid-template-columns: 1fr;
      }

      .page-bong99__card-image-wrapper {
        height: 180px;
      }

      .page-bong99__card-image {
        min-height: 180px;
        min-width: 180px;
      }

      .page-bong99__provider-logo {
        max-width: 150px;
        min-height: 80px;
        min-width: 80px;
      }

      .page-bong99__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 0.9em;
      }

      /* Image responsive optimization for mobile */
      img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-bong99__card-image,
      .page-bong99__hero-image,
      .page-bong99__provider-logo {
        width: 100% !important;
        height: auto !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
      .page-bong99__card-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
    }