/* Tổng quan */
    .page-999okbet {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f4f7f6;
    }

    .page-999okbet__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-999okbet__section {
      background-color: #ffffff;
      margin-bottom: 30px;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    }

    .page-999okbet__section-title {
      font-size: 2.2em;
      color: #0056b3; /* Dark blue for titles */
      text-align: center;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-999okbet__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: #007bff; /* Bright blue underline */
      border-radius: 2px;
    }

    .page-999okbet__text-center {
      text-align: center;
    }

    .page-999okbet__button {
      display: inline-block;
      background-color: #007bff; /* Primary button color */
      color: #ffffff;
      padding: 12px 25px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
      min-width: 150px; /* Ensure button is not too small */
    }

    .page-999okbet__button:hover {
      background-color: #0056b3;
      transform: translateY(-2px);
    }

    .page-999okbet__button--large {
      padding: 15px 30px;
      font-size: 1.1em;
      min-width: 200px;
    }

    /* Hero Section */
    .page-999okbet__hero-section {
      position: relative;
      text-align: center;
      color: #ffffff;
      padding-top: 10px; /* For fixed header */
      margin-bottom: 30px;
      overflow: hidden;
      border-radius: 10px;
    }

    .page-999okbet__hero-image {
      width: 100%;
      height: auto;
      max-width: 100%;
      display: block;
      object-fit: cover;
      border-radius: 10px;
    }
    
    .page-999okbet__hero-content {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      z-index: 2;
      width: 90%;
      max-width: 800px;
      background: rgba(0, 0, 0, 0.6);
      padding: 20px 30px;
      border-radius: 10px;
    }

    .page-999okbet__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #ffc107; /* Yellow for emphasis */
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-999okbet__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 25px;
      color: #e0e0e0;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    /* Floating Login Button */
    .page-999okbet__floating-login-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #dc3545; /* Red for urgency/promo */
      color: #ffffff;
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      animation: page-999okbet__pulse 2s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.1em;
      line-height: 1;
    }

    .page-999okbet__floating-login-button:hover {
      background-color: #c82333;
      transform: scale(1.05);
    }

    @keyframes page-999okbet__pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    /* Game Categories */
    .page-999okbet__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-999okbet__game-card {
      background-color: #ffffff;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .page-999okbet__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .page-999okbet__game-card-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      height: 200px; /* Fixed height for consistency */
    }

    .page-999okbet__game-card-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .page-999okbet__game-card-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-999okbet__game-card-title {
      font-size: 1.5em;
      color: #007bff;
      margin-bottom: 10px;
      text-decoration: none; /* Ensure link text is styled */
    }

    .page-999okbet__game-card-title a {
      color: #007bff;
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .page-999okbet__game-card-title a:hover {
      color: #0056b3;
    }

    .page-999okbet__game-card-description {
      font-size: 0.95em;
      color: #555;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    /* Why Choose Section */
    .page-999okbet__feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-999okbet__feature-card {
      background-color: #e9f7fe; /* Light blue background */
      border-left: 5px solid #007bff;
      padding: 25px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      text-align: left;
    }

    .page-999okbet__feature-card-title {
      font-size: 1.4em;
      color: #0056b3;
      margin-bottom: 10px;
    }

    .page-999okbet__feature-card-text {
      font-size: 1em;
      color: #444;
    }

    /* FAQ Section */
    .page-999okbet__faq-section {
      background-color: #ffffff;
      margin-bottom: 30px;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    }

    .page-999okbet__faq-item {
      border-bottom: 1px solid #eee;
      margin-bottom: 10px;
    }

    .page-999okbet__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
    }

    .page-999okbet__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px;
      cursor: pointer;
      background-color: #f9f9f9;
      border-radius: 5px;
      margin-bottom: 5px;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-999okbet__faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-999okbet__faq-question h3 {
      margin: 0;
      font-size: 1.15em;
      color: #333;
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-999okbet__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: #007bff;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click on parent */
    }

    .page-999okbet__faq-item.active .page-999okbet__faq-toggle {
      transform: rotate(45deg); /* Change + to X or - */
    }

    .page-999okbet__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;
      background-color: #fff;
      border-radius: 0 0 5px 5px;
    }

    .page-999okbet__faq-item.active .page-999okbet__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-999okbet__container {
        padding: 15px;
      }

      .page-999okbet__section {
        padding: 20px;
      }

      .page-999okbet__section-title {
        font-size: 1.8em;
      }

      .page-999okbet__hero-title {
        font-size: 2em;
      }

      .page-999okbet__hero-subtitle {
        font-size: 1em;
      }

      .page-999okbet__floating-login-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      .page-999okbet__game-grid {
        grid-template-columns: 1fr;
      }

      .page-999okbet__feature-grid {
        grid-template-columns: 1fr;
      }
      
      .page-999okbet__game-card-image-wrapper {
        height: 180px;
      }

      /* Image responsive optimization for mobile */
      .page-999okbet img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-999okbet__game-card-image-wrapper,
      .page-999okbet__hero-section {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-999okbet__hero-content {
        padding: 15px 20px;
      }

      .page-999okbet__hero-title {
        font-size: 1.8em;
      }

      .page-999okbet__hero-subtitle {
        font-size: 0.9em;
      }

      .page-999okbet__floating-login-button {
        padding: 10px 18px;
        font-size: 0.9em;
      }
    }