/* CSS Styles for 99ok4 page */
    :root {
      --page-99ok4__primary-color: #f7b32b; /* Vàng cam */
      --page-99ok4__secondary-color: #333; /* Đen xám */
      --page-99ok4__text-color: #fff; /* Trắng */
      --page-99ok4__dark-bg: #1a1a1a; /* Nền tối */
      --page-99ok4__light-bg: #2b2b2b; /* Nền sáng hơn */
      --page-99ok4__accent-color: #e74c3c; /* Đỏ nhấn */
    }

    .page-99ok4 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-99ok4__text-color);
      background-color: var(--page-99ok4__dark-bg);
      overflow-x: hidden;
    }

    .page-99ok4__section {
      padding: 40px 15px;
      margin-bottom: 20px;
      border-radius: 8px;
      background-color: var(--page-99ok4__light-bg);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-99ok4__section--dark {
      background-color: var(--page-99ok4__dark-bg);
    }

    .page-99ok4__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-99ok4__h1,
    .page-99ok4__h2,
    .page-99ok4__h3 {
      color: var(--page-99ok4__primary-color);
      text-align: center;
      margin-bottom: 25px;
      font-weight: bold;
    }

    .page-99ok4__h1 {
      font-size: 2.2em;
      margin-top: 0;
      line-height: 1.2;
    }

    .page-99ok4__h2 {
      font-size: 1.8em;
      color: var(--page-99ok4__primary-color);
    }

    .page-99ok4__h3 {
      font-size: 1.4em;
      color: var(--page-99ok4__text-color);
    }

    .page-99ok4__p {
      margin-bottom: 15px;
      color: #ccc;
      text-align: justify;
    }

    .page-99ok4__button {
      display: inline-block;
      background-color: var(--page-99ok4__primary-color);
      color: var(--page-99ok4__dark-bg);
      padding: 12px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      text-align: center;
      border: none;
      cursor: pointer;
      font-size: 1em;
    }

    .page-99ok4__button:hover {
      background-color: #e0a325;
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-99ok4__hero-section {
      position: relative;
      text-align: center;
      padding: 10px 0 40px 0; /* Adjusted padding-top for fixed header */
      overflow: hidden;
      background-color: var(--page-99ok4__dark-bg);
    }

    .page-99ok4__hero-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 20px;
    }

    .page-99ok4__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 8px;
    }

    .page-99ok4__hero-content {
      position: relative;
      z-index: 2;
      padding: 0 15px;
    }

    .page-99ok4__hero-cta-group {
      display: flex;
      flex-direction: column;
      gap: 15px;
      margin-top: 30px;
      align-items: center;
    }

    /* Floating Login Button */
    .page-99ok4__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      background-color: var(--page-99ok4__accent-color);
      color: var(--page-99ok4__text-color);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
      transition: background-color 0.3s ease, transform 0.3s ease;
      white-space: nowrap;
      border: 2px solid var(--page-99ok4__primary-color);
      animation: pulse 2s infinite;
    }

    .page-99ok4__floating-button:hover {
      background-color: #c0392b;
      transform: translateX(-50%) translateY(-3px);
    }

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

    /* Game Categories */
    .page-99ok4__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-99ok4__game-card {
      background-color: var(--page-99ok4__dark-bg);
      border-radius: 10px;
      padding: 15px;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid #444;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 200px; /* Ensure cards have minimum height */
    }

    .page-99ok4__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    }

    .page-99ok4__game-card-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 10px;
    }

    .page-99ok4__game-card-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 5px;
    }

    .page-99ok4__game-card-title {
      font-size: 1.1em;
      font-weight: bold;
      color: var(--page-99ok4__primary-color);
      margin-bottom: 10px;
    }

    .page-99ok4__game-card-description {
      font-size: 0.9em;
      color: #bbb;
      flex-grow: 1;
      text-align: left;
    }

    /* Promotions Section */
    .page-99ok4__promo-item {
      background-color: var(--page-99ok4__dark-bg);
      border-radius: 10px;
      padding: 20px;
      margin-bottom: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
      border: 1px solid #444;
    }

    .page-99ok4__promo-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 15px;
    }

    .page-99ok4__promo-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 8px;
    }

    .page-99ok4__promo-title {
      font-size: 1.5em;
      color: var(--page-99ok4__primary-color);
      margin-bottom: 10px;
    }

    .page-99ok4__promo-description {
      color: #ccc;
      margin-bottom: 20px;
    }

    /* Guides Section */
    .page-99ok4__guide-steps {
      list-style: none;
      padding: 0;
    }

    .page-99ok4__guide-step {
      background-color: var(--page-99ok4__dark-bg);
      border-radius: 10px;
      padding: 20px;
      margin-bottom: 15px;
      display: flex;
      align-items: flex-start;
      gap: 15px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
      border: 1px solid #444;
    }

    .page-99ok4__guide-icon-wrapper {
      flex-shrink: 0;
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: var(--page-99ok4__primary-color);
      border-radius: 50%;
    }

    .page-99ok4__guide-icon {
      font-size: 2em;
      color: var(--page-99ok4__dark-bg);
      font-weight: bold;
    }

    .page-99ok4__guide-content {
      flex-grow: 1;
    }

    .page-99ok4__guide-title {
      font-size: 1.2em;
      color: var(--page-99ok4__primary-color);
      margin-top: 0;
      margin-bottom: 5px;
    }

    .page-99ok4__guide-description {
      font-size: 0.95em;
      color: #bbb;
    }

    /* FAQ Section */
    .page-99ok4__faq-list {
      margin-top: 30px;
    }

    .page-99ok4__faq-item {
      background-color: var(--page-99ok4__dark-bg);
      border: 1px solid #444;
      border-radius: 8px;
      margin-bottom: 10px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-99ok4__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--page-99ok4__light-bg);
      color: var(--page-99ok4__primary-color);
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-99ok4__faq-question:hover {
      background-color: #3a3a3a;
    }

    .page-99ok4__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-99ok4__primary-color);
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-99ok4__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      color: var(--page-99ok4__primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-99ok4__faq-item.active .page-99ok4__faq-toggle {
      transform: rotate(45deg); /* Plus to Minus */
    }

    .page-99ok4__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: var(--page-99ok4__dark-bg);
      color: #ccc;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-99ok4__faq-item.active .page-99ok4__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-99ok4__h1 {
        font-size: 1.8em;
      }

      .page-99ok4__h2 {
        font-size: 1.5em;
      }

      .page-99ok4__h3 {
        font-size: 1.2em;
      }

      .page-99ok4__section {
        padding: 30px 10px;
      }

      .page-99ok4__game-grid {
        grid-template-columns: 1fr 1fr; /* Two columns on mobile */
      }

      .page-99ok4__floating-button {
        width: calc(100% - 40px);
        bottom: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      .page-99ok4__hero-section {
        padding-top: 10px; /* Adjust for mobile fixed header */
      }

      .page-99ok4__guide-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }

      .page-99ok4__guide-icon-wrapper {
        margin-bottom: 10px;
      }

      .page-99ok4__game-card-image-wrapper,
      .page-99ok4__promo-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }

      .page-99ok4__game-card-image,
      .page-99ok4__promo-image,
      .page-99ok4__hero-image {
        max-width: 100% !important;
        height: auto !important;
        display: block !important;
      }
    }

    @media (max-width: 480px) {
      .page-99ok4__game-grid {
        grid-template-columns: 1fr; /* Single column on very small screens */
      }
    }