/* Reset và các biến cơ bản */
    .page-mb66app {
      font-family: 'Arial', sans-serif;
      background-color: #000000;
      color: #FFFFFF;
      line-height: 1.6;
      overflow-x: hidden;
      max-width: 100vw;
    }

    .page-mb66app__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-mb66app__section {
      padding: 40px 0;
    }

    .page-mb66app__section--dark {
      background-color: #1a1a1a;
    }

    .page-mb66app__heading {
      color: #FFD700;
      text-align: center;
      margin-bottom: 30px;
      font-size: 2.5em;
      font-weight: bold;
    }

    .page-mb66app__sub-heading {
      color: #FFFFFF;
      text-align: center;
      margin-bottom: 20px;
      font-size: 1.8em;
      font-weight: bold;
    }

    .page-mb66app__text {
      color: #FFFFFF;
      margin-bottom: 15px;
      text-align: justify;
    }

    .page-mb66app__text--center {
      text-align: center;
    }

    .page-mb66app__button {
      display: inline-block;
      background-color: #FFD700;
      color: #000000;
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      font-size: 1.1em;
    }

    .page-mb66app__button:hover {
      background-color: #e6c200;
      transform: translateY(-2px);
    }

    .page-mb66app__button-group {
      text-align: center;
      margin-top: 30px;
    }

    /* Hero Section */
    .page-mb66app__hero-section {
      text-align: center;
      padding-top: 10px; /* For desktop and mobile to clear fixed header */
      padding-bottom: 50px;
      background-color: #000000; /* Ensure black background */
    }

    .page-mb66app__hero-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 20px;
    }

    .page-mb66app__hero-image {
      max-width: 100%;
      height: auto;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(255, 215, 0, 0.2);
      min-width: 200px; /* Ensure minimum size */
      min-height: 200px; /* Ensure minimum size */
    }

    .page-mb66app__hero-title {
      font-size: 3em;
      color: #FFD700;
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-mb66app__hero-description {
      font-size: 1.2em;
      color: #FFFFFF;
      max-width: 800px;
      margin: 0 auto 30px;
    }

    /* Game Categories Section */
    .page-mb66app__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-mb66app__game-card {
      background-color: #1a1a1a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      padding-bottom: 20px;
    }

    .page-mb66app__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(255, 215, 0, 0.3);
    }

    .page-mb66app__game-card-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        height: 180px; /* Fixed height for consistency */
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #2a2a2a;
        margin-bottom: 15px;
    }

    .page-mb66app__game-card-image {
      max-width: 100%;
      height: auto;
      object-fit: cover;
      min-height: 200px; /* Ensure minimum size */
      min-width: 200px; /* Ensure minimum size */
    }

    .page-mb66app__game-card-title {
      font-size: 1.4em;
      color: #FFD700;
      margin-bottom: 10px;
      padding: 0 15px;
    }

    .page-mb66app__game-card-description {
      font-size: 0.95em;
      color: #CCCCCC;
      padding: 0 15px;
    }

    /* Features Section */
    .page-mb66app__features-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-mb66app__feature-item {
      background-color: #1a1a1a;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
      text-align: center;
    }

    .page-mb66app__feature-icon-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 15px;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100px; /* Ensure icon area is large enough */
    }

    .page-mb66app__feature-icon {
      max-width: 100px;
      height: auto;
      margin-bottom: 15px;
      min-width: 200px; /* Ensure minimum size */
      min-height: 200px; /* Ensure minimum size */
    }

    .page-mb66app__feature-title {
      font-size: 1.5em;
      color: #FFD700;
      margin-bottom: 10px;
    }

    .page-mb66app__feature-description {
      color: #CCCCCC;
    }

    /* Download Guide Section */
    .page-mb66app__download-steps {
      margin-top: 30px;
    }

    .page-mb66app__step-item {
      background-color: #1a1a1a;
      padding: 25px;
      border-radius: 10px;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 20px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    }

    .page-mb66app__step-number {
      background-color: #FFD700;
      color: #000000;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5em;
      font-weight: bold;
      flex-shrink: 0;
    }

    .page-mb66app__step-content h3 {
      color: #FFD700;
      margin-top: 0;
      margin-bottom: 10px;
      font-size: 1.3em;
    }

    .page-mb66app__step-content p {
      color: #CCCCCC;
      margin-bottom: 0;
    }

    /* Game Providers Section */
    .page-mb66app__providers-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-mb66app__provider-logo-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        background-color: #1a1a1a;
        border-radius: 8px;
        padding: 15px;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 120px; /* Consistent height for logos */
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-mb66app__provider-logo-wrapper:hover {
      transform: translateY(-3px);
      box-shadow: 0 4px 10px rgba(255, 215, 0, 0.3);
    }

    .page-mb66app__provider-logo {
      max-width: 100%;
      max-height: 90px;
      height: auto;
      object-fit: contain;
      min-width: 200px; /* Ensure minimum size */
      min-height: 200px; /* Ensure minimum size */
    }

    /* FAQ Section */
    .page-mb66app__faq-list {
      margin-top: 30px;
    }

    .page-mb66app__faq-item {
      background-color: #1a1a1a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    }

    .page-mb66app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      user-select: none;
      background-color: #2a2a2a;
      transition: background-color 0.3s ease;
    }

    .page-mb66app__faq-question:hover {
      background-color: #3a3a3a;
    }

    .page-mb66app__faq-question h3 {
      color: #FFD700;
      margin: 0;
      font-size: 1.2em;
      pointer-events: none; /* Prevent text selection interfering with click */
    }

    .page-mb66app__faq-toggle {
      color: #FFD700;
      font-size: 1.8em;
      font-weight: bold;
      pointer-events: none; /* Prevent icon selection interfering with click */
      transition: transform 0.3s ease;
    }

    .page-mb66app__faq-item.active .page-mb66app__faq-toggle {
      transform: rotate(45deg); /* Plus to X for active */
    }

    .page-mb66app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
    }

    .page-mb66app__faq-item.active .page-mb66app__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-mb66app__faq-answer p {
      color: #CCCCCC;
      margin: 0;
    }

    /* Social Media Section */
    .page-mb66app__social-links {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      flex-wrap: wrap; /* Allow wrapping on small screens */
    }

    .page-mb66app__social-link {
      color: #FFFFFF;
      font-size: 2.5em;
      transition: color 0.3s ease, transform 0.3s ease;
      text-decoration: none; /* Ensure no underline */
    }

    .page-mb66app__social-link:hover {
      color: #FFD700;
      transform: translateY(-3px);
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-mb66app__hero-section {
        padding-top: 10px; /* For mobile */
      }

      .page-mb66app__hero-title {
        font-size: 2.2em;
      }

      .page-mb66app__hero-description {
        font-size: 1em;
      }

      .page-mb66app__heading {
        font-size: 2em;
      }

      .page-mb66app__sub-heading {
        font-size: 1.5em;
      }

      .page-mb66app__game-categories,
      .page-mb66app__features-list,
      .page-mb66app__providers-grid {
        grid-template-columns: 1fr;
      }

      .page-mb66app__step-item {
        flex-direction: column;
        text-align: center;
      }

      .page-mb66app__step-number {
        margin-bottom: 15px;
      }

      .page-mb66app__faq-question {
        padding: 15px 20px;
      }

      .page-mb66app__faq-question h3 {
        font-size: 1.1em;
      }

      .page-mb66app__faq-answer {
        padding: 0 20px;
      }

      .page-mb66app__faq-item.active .page-mb66app__faq-answer {
        padding: 15px 20px !important;
      }

      /* Image responsive optimization for mobile */
      .page-mb66app img {
          max-width: 100% !important;
          height: auto !important;
      }
      .page-mb66app__hero-image-wrapper,
      .page-mb66app__game-card-image-wrapper,
      .page-mb66app__feature-icon-wrapper,
      .page-mb66app__provider-logo-wrapper {
          width: 100% !important;
          max-width: 100% !important;
          overflow: hidden !important;
          box-sizing: border-box !important;
      }
      .page-mb66app__social-link {
        font-size: 2em;
      }
    }