/* CSS cho trang fun88 chính thức */
    :root {
      --page-fun88chinhthuc-primary-color: #e44d26; /* Màu cam đậm */
      --page-fun88chinhthuc-secondary-color: #2c3e50; /* Màu xanh đen */
      --page-fun88chinhthuc-accent-color: #f39c12; /* Màu vàng cam */
      --page-fun88chinhthuc-text-color: #333; /* Màu chữ chính */
      --page-fun88chinhthuc-light-text-color: #f8f8f8; /* Màu chữ sáng */
      --page-fun88chinhthuc-background-light: #f5f5f5; /* Nền sáng */
      --page-fun88chinhthuc-background-dark: #222; /* Nền tối */
      --page-fun88chinhthuc-border-color: #ddd; /* Màu viền */
    }

    .page-fun88chinhthuc {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-fun88chinhthuc-text-color);
      background-color: var(--page-fun88chinhthuc-background-light);
      display: flex;
      flex-direction: column;
      align-items: center;
      padding-bottom: 80px; /* Để tránh nút nổi bị che */
    }

    .page-fun88chinhthuc-container {
      max-width: 1200px;
      width: 100%;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-fun88chinhthuc-section {
      background-color: #fff;
      margin-bottom: 20px;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
      width: 100%;
    }

    .page-fun88chinhthuc-hero {
      text-align: center;
      padding: 0;
      background-color: var(--page-fun88chinhthuc-secondary-color);
      color: var(--page-fun88chinhthuc-light-text-color);
      border-radius: 0;
      box-shadow: none;
      margin-bottom: 20px;
    }

    .page-fun88chinhthuc-hero-banner {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 0;
      object-fit: cover;
    }

    .page-fun88chinhthuc-hero-content {
      padding: 20px;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-fun88chinhthuc-hero h1 {
      color: var(--page-fun88chinhthuc-accent-color);
      margin-top: 20px;
      margin-bottom: 10px;
      font-size: 2em;
      line-height: 1.2;
    }

    .page-fun88chinhthuc-hero p {
      font-size: 1.1em;
      margin-bottom: 20px;
      color: var(--page-fun88chinhthuc-light-text-color);
    }

    .page-fun88chinhthuc-buttons-wrapper {
      display: flex;
      justify-content: center;
      gap: 15px;
      margin-top: 20px;
    }

    .page-fun88chinhthuc-btn {
      display: inline-block;
      padding: 12px 25px;
      border-radius: 25px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      font-size: 1em;
      text-align: center;
      white-space: nowrap;
      cursor: pointer;
    }

    .page-fun88chinhthuc-btn-primary {
      background-color: var(--page-fun88chinhthuc-primary-color);
      color: var(--page-fun88chinhthuc-light-text-color);
      border: 2px solid var(--page-fun88chinhthuc-primary-color);
    }

    .page-fun88chinhthuc-btn-primary:hover {
      background-color: #c0392b; /* Darker primary */
      transform: translateY(-2px);
    }

    .page-fun88chinhthuc-btn-secondary {
      background-color: transparent;
      color: var(--page-fun88chinhthuc-primary-color);
      border: 2px solid var(--page-fun88chinhthuc-primary-color);
    }

    .page-fun88chinhthuc-btn-secondary:hover {
      background-color: var(--page-fun88chinhthuc-primary-color);
      color: var(--page-fun88chinhthuc-light-text-color);
      transform: translateY(-2px);
    }

    .page-fun88chinhthuc h2 {
      color: var(--page-fun88chinhthuc-primary-color);
      text-align: center;
      margin-bottom: 25px;
      font-size: 1.8em;
      border-bottom: 2px solid var(--page-fun88chinhthuc-border-color);
      padding-bottom: 10px;
    }

    .page-fun88chinhthuc h3 {
      color: var(--page-fun88chinhthuc-secondary-color);
      margin-top: 20px;
      margin-bottom: 15px;
      font-size: 1.4em;
    }

    .page-fun88chinhthuc-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-top: 20px;
      justify-items: center;
    }

    .page-fun88chinhthuc-card {
      background-color: var(--page-fun88chinhthuc-background-light);
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.1);
      overflow: hidden;
      text-align: center;
      padding: 15px;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      width: 100%;
      max-width: 350px; /* Giới hạn chiều rộng cho card */
    }

    .page-fun88chinhthuc-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px rgba(0,0,0,0.15);
    }

    .page-fun88chinhthuc-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 4px;
      margin-bottom: 15px;
    }

    .page-fun88chinhthuc-card h4 {
      font-size: 1.2em;
      color: var(--page-fun88chinhthuc-primary-color);
      margin-bottom: 10px;
    }

    .page-fun88chinhthuc-card p {
      font-size: 0.95em;
      color: var(--page-fun88chinhthuc-text-color);
      margin-bottom: 15px;
    }

    .page-fun88chinhthuc-card .page-fun88chinhthuc-btn {
      padding: 8px 15px;
      font-size: 0.9em;
      border-radius: 20px;
    }

    .page-fun88chinhthuc-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-fun88chinhthuc-list li {
      background-color: #fefefe;
      margin-bottom: 10px;
      padding: 15px;
      border-left: 5px solid var(--page-fun88chinhthuc-primary-color);
      border-radius: 4px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.08);
      color: var(--page-fun88chinhthuc-text-color);
    }

    .page-fun88chinhthuc-list li strong {
      color: var(--page-fun88chinhthuc-secondary-color);
    }

    /* Floating Register/Login Buttons */
    .page-fun88chinhthuc-sticky-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: space-around;
      padding: 10px 0;
      background-color: var(--page-fun88chinhthuc-secondary-color);
      box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
      z-index: 1000;
      gap: 10px;
    }

    .page-fun88chinhthuc-sticky-buttons .page-fun88chinhthuc-btn {
      flex: 1;
      margin: 0 5px;
      padding: 12px 10px;
      font-size: 1.05em;
      max-width: 180px;
    }

    @media (max-width: 768px) {
      .page-fun88chinhthuc-hero h1 {
        font-size: 1.8em;
      }
      .page-fun88chinhthuc-hero p {
        font-size: 1em;
      }
      .page-fun88chinhthuc h2 {
        font-size: 1.6em;
      }
      .page-fun88chinhthuc-btn {
        padding: 10px 20px;
        font-size: 0.95em;
      }
      .page-fun88chinhthuc-grid {
        grid-template-columns: 1fr;
      }
      .page-fun88chinhthuc-card {
        max-width: 90%; /* On mobile, cards can take more width */
      }
      .page-fun88chinhthuc-sticky-buttons .page-fun88chinhthuc-btn {
        font-size: 0.95em;
        padding: 10px 8px;
      }
    }

    @media (max-width: 480px) {
      .page-fun88chinhthuc-hero h1 {
        font-size: 1.6em;
      }
      .page-fun88chinhthuc-hero p {
        font-size: 0.9em;
      }
      .page-fun88chinhthuc h2 {
        font-size: 1.4em;
      }
      .page-fun88chinhthuc-btn {
        padding: 8px 15px;
        font-size: 0.9em;
      }
      .page-fun88chinhthuc-sticky-buttons {
        flex-direction: row;
        gap: 5px;
        padding: 8px 0;
      }
      .page-fun88chinhthuc-sticky-buttons .page-fun88chinhthuc-btn {
        padding: 8px 5px;
        font-size: 0.85em;
      }
    }