:root {
      --page-j88-primary-color: #f0b400; /* Vàng sáng */
      --page-j88-secondary-color: #1a1a1a; /* Gần đen */
      --page-j88-accent-color: #ff4d4d; /* Đỏ nhấn */
      --page-j88-text-color: #ffffff; /* Trắng */
      --page-j88-light-text-color: #cccccc; /* Xám nhạt */
      --page-j88-dark-bg: #0a0a0a;
      --page-j88-medium-bg: #1e1e1e;
      --page-j88-border-color: #333333;
    }

    .page-j88 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      color: var(--page-j88-text-color);
      background-color: var(--page-j88-dark-bg);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .page-j88-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-j88-section {
      padding: 40px 0;
      text-align: center;
    }

    .page-j88-section-dark {
      background-color: var(--page-j88-medium-bg);
    }

    .page-j88-section h1,
    .page-j88-section h2,
    .page-j88-section h3 {
      color: var(--page-j88-primary-color);
      margin-bottom: 20px;
      font-weight: bold;
    }

    .page-j88-section h1 {
      font-size: 2.5em;
    }
    .page-j88-section h2 {
      font-size: 2em;
    }
    .page-j88-section h3 {
      font-size: 1.5em;
      color: var(--page-j88-text-color);
    }

    .page-j88-paragraph {
      margin-bottom: 15px;
      color: var(--page-j88-light-text-color);
      font-size: 1.1em;
    }

    .page-j88-banner {
      position: relative;
      background-color: #000;
      padding-top: 56.25%; /* 16:9 Aspect Ratio for banner image */
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      align-items: center;
      text-align: center;
      min-height: 300px; /* fallback height */
    }

    .page-j88-banner-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
    }

    .page-j88-banner-content {
      position: relative;
      z-index: 2;
      padding: 20px 15px;
      background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
      width: 100%;
      box-sizing: border-box;
    }

    .page-j88-banner-content h1 {
      color: var(--page-j88-primary-color);
      font-size: 2.2em;
      margin-bottom: 10px;
      text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
    }

    .page-j88-banner-content p {
      font-size: 1.2em;
      color: var(--page-j88-text-color);
      margin-bottom: 20px;
      text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    }

    .page-j88-btn {
      display: inline-block;
      background-color: var(--page-j88-accent-color);
      color: var(--page-j88-text-color);
      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;
    }

    .page-j88-btn:hover {
      background-color: #e63946;
      transform: translateY(-2px);
    }

    .page-j88-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-j88-card {
      background-color: var(--page-j88-secondary-color);
      border-radius: 10px;
      overflow: hidden;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      border: 1px solid var(--page-j88-border-color);
    }

    .page-j88-card:hover {
      transform: translateY(-5px);
    }

    .page-j88-card-image {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-bottom: 1px solid var(--page-j88-border-color);
    }

    .page-j88-card-content {
      padding: 20px;
    }

    .page-j88-card-content h3 {
      margin-top: 0;
      font-size: 1.3em;
      color: var(--page-j88-primary-color);
    }

    .page-j88-card-content p {
      font-size: 0.95em;
      color: var(--page-j88-light-text-color);
    }

    .page-j88-game-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 15px;
      margin-top: 30px;
    }

    .page-j88-game-item {
      background-color: var(--page-j88-secondary-color);
      border-radius: 8px;
      padding: 15px;
      text-align: center;
      border: 1px solid var(--page-j88-border-color);
      transition: transform 0.2s ease;
    }
    .page-j88-game-item:hover {
        transform: scale(1.03);
    }

    .page-j88-game-item img {
      width: 80px;
      height: 80px;
      object-fit: contain;
      margin-bottom: 10px;
    }

    .page-j88-game-item p {
      font-weight: bold;
      color: var(--page-j88-primary-color);
      margin: 0;
      font-size: 0.9em;
    }

    .page-j88-list {
      list-style: none;
      padding: 0;
      margin: 30px auto;
      max-width: 800px;
      text-align: left;
    }

    .page-j88-list li {
      background-color: var(--page-j88-secondary-color);
      margin-bottom: 10px;
      padding: 15px 20px;
      border-radius: 8px;
      border-left: 5px solid var(--page-j88-primary-color);
      color: var(--page-j88-text-color);
      font-size: 1.1em;
    }

    .page-j88-faq-item {
      background-color: var(--page-j88-secondary-color);
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--page-j88-border-color);
      text-align: left;
    }

    .page-j88-faq-question {
      padding: 15px 20px;
      cursor: pointer;
      font-weight: bold;
      color: var(--page-j88-primary-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.1em;
    }

    .page-j88-faq-answer {
      padding: 0 20px 15px;
      color: var(--page-j88-light-text-color);
      display: none;
      font-size: 1em;
    }

    .page-j88-faq-question::after {
      content: '+';
      font-size: 1.5em;
      transition: transform 0.3s ease;
    }

    .page-j88-faq-item.active .page-j88-faq-question::after {
      content: '-';
      transform: rotate(180deg);
    }

    .page-j88-floating-buttons {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 15px;
      z-index: 1000;
      width: calc(100% - 40px); /* Adjust for padding on small screens */
      max-width: 400px; /* Limit width on larger mobiles */
    }

    .page-j88-floating-buttons .page-j88-btn {
      flex: 1;
      padding: 15px 10px;
      font-size: 1.1em;
      border-radius: 30px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.5);
      white-space: nowrap; /* Prevent text wrapping */
    }

    .page-j88-btn-register {
      background-color: var(--page-j88-accent-color);
    }
    .page-j88-btn-register:hover {
      background-color: #e63946;
    }

    .page-j88-btn-login {
      background-color: #007bff; /* Blue for login */
    }
    .page-j88-btn-login:hover {
      background-color: #0056b3;
    }

    @media (min-width: 768px) {
      .page-j88-banner-content h1 {
        font-size: 3.5em;
      }
      .page-j88-banner-content p {
        font-size: 1.4em;
      }
      .page-j88-section {
        padding: 60px 0;
      }
      .page-j88-section h1 {
        font-size: 3em;
      }
      .page-j88-section h2 {
        font-size: 2.5em;
      }
      .page-j88-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .page-j88-game-list {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      }
      .page-j88-floating-buttons {
        bottom: 30px;
        right: 30px;
        left: auto;
        flex-direction: column;
        width: auto;
        max-width: 200px;
        transform: translateX(0);
      }
      .page-j88-floating-buttons .page-j88-btn {
        width: 180px;
        padding: 15px 20px;
      }
    }