/* CSS cho trang https ok9aa com */
    :root {
      --page-ok9aaa-primary-color: #007bff; /* Xanh dương */
      --page-ok9aaa-secondary-color: #6c757d; /* Xám */
      --page-ok9aaa-accent-color: #ffc107; /* Vàng */
      --page-ok9aaa-background-light: #f8f9fa; /* Nền sáng */
      --page-ok9aaa-background-dark: #343a40; /* Nền tối */
      --page-ok9aaa-text-dark: #212529; /* Chữ tối */
      --page-ok9aaa-text-light: #ffffff; /* Chữ sáng */
      --page-ok9aaa-border-color: #dee2e6; /* Màu viền */
      --page-ok9aaa-success-color: #28a745; /* Xanh lá */
      --page-ok9aaa-info-color: #17a2b8; /* Xanh ngọc */
    }

    .page-ok9aaa {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-ok9aaa-text-dark);
      background-color: var(--page-ok9aaa-background-light);
    }

    .page-ok9aaa-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-ok9aaa-hero {
      background: linear-gradient(to right, var(--page-ok9aaa-primary-color), #0056b3);
      color: var(--page-ok9aaa-text-light);
      padding: 60px 20px;
      text-align: center;
      border-radius: 8px;
      margin-bottom: 40px;
      position: relative;
      overflow: hidden;
    }

    .page-ok9aaa-hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: url('[GALLERY:background:abstract,pattern,geometric]') no-repeat center center/cover;
      opacity: 0.1;
      z-index: 0;
    }

    .page-ok9aaa-hero-content {
      position: relative;
      z-index: 1;
    }

    .page-ok9aaa-hero h1 {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-ok9aaa-text-light);
      font-weight: bold;
    }

    .page-ok9aaa-hero p {
      font-size: 1.2em;
      margin-bottom: 30px;
    }

    .page-ok9aaa-btn {
      display: inline-block;
      background-color: var(--page-ok9aaa-accent-color);
      color: var(--page-ok9aaa-text-dark);
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
    }

    .page-ok9aaa-btn:hover {
      background-color: #e0a800;
      transform: translateY(-2px);
    }
    
    .page-ok9aaa-btn-primary {
      background-color: var(--page-ok9aaa-primary-color);
      color: var(--page-ok9aaa-text-light);
    }

    .page-ok9aaa-btn-primary:hover {
      background-color: #0056b3;
    }

    .page-ok9aaa-section {
      background-color: var(--page-ok9aaa-text-light);
      padding: 40px;
      margin-bottom: 30px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

    .page-ok9aaa-section h2 {
      font-size: 2em;
      color: var(--page-ok9aaa-primary-color);
      margin-bottom: 25px;
      text-align: center;
      position: relative;
      padding-bottom: 10px;
    }

    .page-ok9aaa-section h2::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: var(--page-ok9aaa-accent-color);
    }

    .page-ok9aaa-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-ok9aaa-card {
      background-color: var(--page-ok9aaa-background-light);
      border-radius: 8px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-ok9aaa-border-color);
    }

    .page-ok9aaa-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    }

    .page-ok9aaa-card img {
      max-width: 80px;
      margin-bottom: 15px;
      height: auto;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }

    .page-ok9aaa-card h3 {
      font-size: 1.4em;
      color: var(--page-ok9aaa-primary-color);
      margin-bottom: 10px;
    }

    .page-ok9aaa-features-list {
      list-style: none;
      padding: 0;
      text-align: left;
      margin-top: 20px;
    }

    .page-ok9aaa-features-list li {
      margin-bottom: 10px;
      padding-left: 30px;
      position: relative;
      color: var(--page-ok9aaa-text-dark);
    }

    .page-ok9aaa-features-list li::before {
      content: '✓';
      color: var(--page-ok9aaa-success-color);
      font-weight: bold;
      position: absolute;
      left: 0;
      top: 0;
    }

    .page-ok9aaa-game-gallery {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-ok9aaa-game-item {
      text-align: center;
      border: 1px solid var(--page-ok9aaa-border-color);
      border-radius: 8px;
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      background-color: var(--page-ok9aaa-background-light);
    }

    .page-ok9aaa-game-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    }

    .page-ok9aaa-game-item img {
      width: 100%;
      height: 120px;
      object-fit: cover;
      display: block;
    }

    .page-ok9aaa-game-item p {
      padding: 10px;
      font-weight: bold;
      color: var(--page-ok9aaa-text-dark);
      margin: 0;
      font-size: 0.95em;
    }

    .page-ok9aaa-cta-banner {
      background: var(--page-ok9aaa-info-color);
      color: var(--page-ok9aaa-text-light);
      padding: 30px;
      text-align: center;
      border-radius: 8px;
      margin-bottom: 40px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .page-ok9aaa-cta-banner h3 {
      font-size: 2em;
      margin-bottom: 15px;
      color: var(--page-ok9aaa-text-light);
    }

    .page-ok9aaa-cta-banner p {
      font-size: 1.1em;
      margin-bottom: 25px;
    }

    .page-ok9aaa-floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-ok9aaa-success-color);
      color: var(--page-ok9aaa-text-light);
      padding: 15px 20px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 15px;
      transition: transform 0.3s ease, opacity 0.3s ease;
      opacity: 0; /* Hidden by default */
      transform: translateX(100%); /* Off-screen by default */
    }
    .page-ok9aaa-floating-ad.page-ok9aaa-show-ad {
      opacity: 1;
      transform: translateX(0);
    }

    .page-ok9aaa-floating-ad p {
      margin: 0;
      font-size: 1.1em;
      font-weight: bold;
    }

    .page-ok9aaa-floating-ad .page-ok9aaa-btn {
      background-color: var(--page-ok9aaa-accent-color);
      color: var(--page-ok9aaa-text-dark);
      padding: 8px 18px;
      font-size: 0.95em;
    }

    .page-ok9aaa-close-ad {
      background: none;
      border: none;
      color: var(--page-ok9aaa-text-light);
      font-size: 1.5em;
      cursor: pointer;
      padding: 0 5px;
      line-height: 1;
      opacity: 0.7;
      transition: opacity 0.2s ease;
    }
    .page-ok9aaa-close-ad:hover {
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-ok9aaa-hero h1 {
        font-size: 2.2em;
      }
      .page-ok9aaa-hero p {
        font-size: 1em;
      }
      .page-ok9aaa-section {
        padding: 25px;
      }
      .page-ok9aaa-section h2 {
        font-size: 1.8em;
      }
      .page-ok9aaa-grid {
        grid-template-columns: 1fr;
      }
      .page-ok9aaa-game-gallery {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
      }
      .page-ok9aaa-floating-ad {
        flex-direction: column;
        bottom: 10px;
        right: 10px;
        left: 10px;
        width: auto;
        padding: 12px 15px;
        text-align: center;
      }
      .page-ok9aaa-floating-ad p {
        font-size: 1em;
      }
      .page-ok9aaa-floating-ad .page-ok9aaa-btn {
        width: 100%;
        margin-top: 10px;
      }
      .page-ok9aaa-close-ad {
        position: absolute;
        top: 5px;
        right: 10px;
      }
    }