/* Tổng quan */
    .page-mb66 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: #e0e0e0; /* Màu chữ sáng */
      background-color: #1a1a2e; /* Nền tối */
      padding: 20px 0;
      overflow-x: hidden;
    }

    .page-mb66 .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-mb66 h1, .page-mb66 h2, .page-mb66 h3, .page-mb66 h4 {
      color: #e94560; /* Màu tiêu đề nổi bật */
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-mb66 h1 {
      font-size: 2.8em;
      text-align: center;
      margin-bottom: 25px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-mb66 h2 {
      font-size: 2.2em;
      border-bottom: 2px solid #533483; /* Đường kẻ dưới tiêu đề */
      padding-bottom: 10px;
      margin-top: 40px;
    }

    .page-mb66 h3 {
      font-size: 1.8em;
      margin-top: 30px;
      color: #0f3460;
    }

    .page-mb66 p {
      margin-bottom: 15px;
    }

    .page-mb66 a {
      color: #e94560; /* Màu link */
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .page-mb66 a:hover {
      color: #533483; /* Màu link khi hover */
    }

    .page-mb66 .btn {
      display: inline-block;
      background-color: #e94560;
      color: #ffffff;
      padding: 12px 25px;
      border-radius: 8px;
      text-transform: uppercase;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
      text-align: center;
    }

    .page-mb66 .btn:hover {
      background-color: #533483;
      transform: translateY(-2px);
    }

    .page-mb66 .section-hero {
      background: linear-gradient(rgba(26, 26, 46, 0.8), rgba(26, 26, 46, 0.8)), url('[GALLERY:background:mb66,hero,banner]') no-repeat center center/cover;
      padding: 80px 0;
      text-align: center;
      color: #ffffff;
      position: relative;
    }

    .page-mb66 .section-hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('[GALLERY:pattern:abstract,geometric]'); /* Thêm họa tiết nhẹ */
      opacity: 0.1;
      z-index: 0;
    }

    .page-mb66 .hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-mb66 .hero-content h1 {
      font-size: 3.5em;
      margin-bottom: 15px;
      color: #f7f7f7;
      text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
    }

    .page-mb66 .hero-content p {
      font-size: 1.3em;
      margin-bottom: 30px;
      opacity: 0.9;
    }

    .page-mb66 .hero-buttons .btn {
      margin: 10px;
    }

    .page-mb66 .section-advantages,
    .page-mb66 .section-games,
    .page-mb66 .section-guide,
    .page-mb66 .section-promotions,
    .page-mb66 .section-faq,
    .page-mb66 .section-cta {
      padding: 50px 0;
    }

    .page-mb66 .section-advantages .advantage-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-mb66 .advantage-card {
      background-color: #2e2e4a;
      padding: 25px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
    }

    .page-mb66 .advantage-card:hover {
      transform: translateY(-5px);
    }

    .page-mb66 .advantage-card img {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      filter: drop-shadow(0 0 5px rgba(233, 69, 96, 0.7));
    }

    .page-mb66 .advantage-card h3 {
      color: #e94560;
      font-size: 1.5em;
      margin-bottom: 10px;
    }

    .page-mb66 .section-games .game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-mb66 .game-card {
      background-color: #2e2e4a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      text-align: center;
    }

    .page-mb66 .game-card:hover {
      transform: translateY(-5px);
    }

    .page-mb66 .game-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
    }

    .page-mb66 .game-card-content {
      padding: 20px;
    }

    .page-mb66 .game-card h3 {
      font-size: 1.4em;
      margin-bottom: 10px;
      color: #e94560;
    }

    .page-mb66 .game-card .btn {
      width: 100%;
      margin-top: 15px;
    }

    .page-mb66 .section-guide .guide-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-mb66 .guide-step {
      background-color: #2e2e4a;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .page-mb66 .guide-step .step-icon {
      width: 70px;
      height: 70px;
      background-color: #e94560;
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 2em;
      font-weight: bold;
      margin-bottom: 15px;
      box-shadow: 0 0 10px rgba(233, 69, 96, 0.7);
    }

    .page-mb66 .guide-step h3 {
      color: #e94560;
      margin-bottom: 10px;
    }

    .page-mb66 .section-promotions {
      background-color: #0f3460;
      padding: 60px 0;
      text-align: center;
    }

    .page-mb66 .section-promotions h2 {
      color: #ffffff;
      border-bottom-color: #e94560;
    }

    .page-mb66 .promotion-card {
      background-color: #2e2e4a;
      padding: 30px;
      border-radius: 10px;
      margin-top: 30px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-mb66 .promotion-card img {
      max-width: 150px;
      margin-bottom: 20px;
      filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
    }

    .page-mb66 .promotion-card h3 {
      color: #e94560;
      font-size: 2em;
      margin-bottom: 15px;
    }

    .page-mb66 .promotion-card p {
      font-size: 1.1em;
      margin-bottom: 25px;
      color: #cccccc;
    }

    .page-mb66 .section-faq .faq-item {
      background-color: #2e2e4a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    }

    .page-mb66 .faq-question {
      padding: 18px 25px;
      background-color: #3e3e6e;
      color: #ffffff;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
    }

    .page-mb66 .faq-question:hover {
      background-color: #533483;
    }

    .page-mb66 .faq-question .arrow {
      transition: transform 0.3s ease;
    }

    .page-mb66 .faq-question.active .arrow {
      transform: rotate(180deg);
    }

    .page-mb66 .faq-answer {
      padding: 0 25px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease-out, padding 0.4s ease-out;
      color: #cccccc;
    }

    .page-mb66 .faq-answer.active {
      max-height: 200px; /* Adjust as needed */
      padding: 15px 25px 25px;
    }

    .page-mb66 .section-cta {
      text-align: center;
      background-color: #1a1a2e;
      padding-top: 60px;
      padding-bottom: 80px;
    }

    .page-mb66 .section-cta h2 {
      color: #e94560;
      font-size: 2.5em;
      margin-bottom: 20px;
      border-bottom: none;
    }

    .page-mb66 .section-cta p {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: #cccccc;
    }

    /* Floating Ad */
    .page-mb66 .floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #e94560;
      color: #ffffff;
      padding: 10px 15px;
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 10px;
      animation: page-mb66-pulse 2s infinite;
      text-decoration: none;
      font-weight: bold;
      font-size: 0.95em;
      max-width: 250px;
      text-align: center;
    }

    .page-mb66 .floating-ad:hover {
      background-color: #533483;
      animation: none;
    }

    .page-mb66 .floating-ad img {
      width: 30px;
      height: 30px;
      object-fit: contain;
    }

    @keyframes page-mb66-pulse {
      0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(233, 69, 96, 0.7); }
      70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(233, 69, 96, 0); }
      100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(233, 69, 96, 0); }
    }


    /* Responsive */
    @media (max-width: 768px) {
      .page-mb66 h1 {
        font-size: 2.5em;
      }
      .page-mb66 h2 {
        font-size: 1.8em;
      }
      .page-mb66 .hero-content h1 {
        font-size: 2.8em;
      }
      .page-mb66 .hero-content p {
        font-size: 1.1em;
      }
      .page-mb66 .advantage-grid,
      .page-mb66 .game-grid,
      .page-mb66 .guide-steps {
        grid-template-columns: 1fr;
      }
      .page-mb66 .floating-ad {
        bottom: 15px;
        right: 15px;
        font-size: 0.85em;
        max-width: 200px;
        padding: 8px 12px;
      }
      .page-mb66 .floating-ad img {
        width: 25px;
        height: 25px;
      }
    }

    @media (max-width: 480px) {
      .page-mb66 h1 {
        font-size: 2em;
      }
      .page-mb66 .hero-content h1 {
        font-size: 2.2em;
      }
      .page-mb66 .hero-buttons .btn {
        display: block;
        width: calc(100% - 20px);
        margin: 10px auto;
      }
      .page-mb66 .faq-question {
        font-size: 1em;
      }
    }