/* Tổng quan */
    .page-789et-body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      margin: 0;
      padding: 0;
      background-color: #f0f2f5;
      color: #333;
    }

    /* Vùng nội dung chính */
    .page-789et {
      max-width: 1200px;
      margin: 0 auto;
      padding: 15px;
      line-height: 1.6;
    }

    /* Tiêu đề chính */
    .page-789et-hero {
      text-align: center;
      margin-bottom: 30px;
      background-color: #ffffff;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .page-789et-hero-banner {
      width: 100%;
      height: auto;
      max-height: 300px; /* Giới hạn chiều cao cho banner */
      object-fit: contain; /* Đảm bảo hình ảnh không bị kéo dãn */
      margin-bottom: 20px;
      border-radius: 8px;
    }

    .page-789et-hero h1 {
      color: #CC0000;
      font-size: 2.2em;
      margin-top: 0;
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-789et-hero p {
      font-size: 1.1em;
      color: #555;
      max-width: 800px;
      margin: 0 auto 20px auto;
    }

    /* Nút đăng nhập nổi */
    .page-789et-floating-login {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      background: linear-gradient(90deg, #FF6F00, #FF0000); /* Màu đỏ cam nổi bật */
      border-radius: 50px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      padding: 10px 25px;
      animation: page-789et-pulse 1.5s infinite;
      text-align: center;
    }

    .page-789et-floating-login a {
      color: #ffffff;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      display: block;
    }

    @keyframes page-789et-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    /* Các phần nội dung */
    .page-789et-section {
      background-color: #ffffff;
      padding: 25px;
      margin-bottom: 25px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
    }

    .page-789et-section h2 {
      color: #CC0000;
      font-size: 1.8em;
      margin-bottom: 20px;
      text-align: center;
      position: relative;
      padding-bottom: 10px;
    }

    .page-789et-section h2::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: #FF6F00;
      border-radius: 2px;
    }

    .page-789et-section h3 {
      color: #0056b3;
      font-size: 1.4em;
      margin-top: 20px;
      margin-bottom: 10px;
    }

    .page-789et-section p {
      margin-bottom: 15px;
      color: #444;
    }

    .page-789et-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      text-align: center;
    }

    .page-789et-card {
      background-color: #f9f9f9;
      border: 1px solid #eee;
      border-radius: 8px;
      padding: 15px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
      transition: transform 0.2s ease-in-out;
    }

    .page-789et-card:hover {
      transform: translateY(-5px);
    }

    .page-789et-card img {
      max-width: 100%;
      height: 100px;
      object-fit: contain;
      margin-bottom: 10px;
      border-radius: 4px;
    }

    .page-789et-card h4 {
      color: #333;
      font-size: 1.1em;
      margin: 10px 0 5px 0;
    }

    .page-789et-card a {
      text-decoration: none;
      color: #CC0000;
      font-weight: bold;
    }

    .page-789et-card a:hover {
      text-decoration: underline;
      color: #FF6F00;
    }

    .page-789et-list {
      list-style: none;
      padding: 0;
    }

    .page-789et-list li {
      background-color: #f0f8ff;
      margin-bottom: 10px;
      padding: 12px 15px;
      border-left: 5px solid #007bff;
      border-radius: 4px;
      color: #333;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-789et-hero h1 {
        font-size: 1.8em;
      }
      .page-789et-section h2 {
        font-size: 1.5em;
      }
      .page-789et-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      }
      .page-789et-floating-login {
        bottom: 15px;
        right: 15px;
        padding: 8px 20px;
      }
      .page-789et-floating-login a {
        font-size: 1em;
      }
    }

    @media (max-width: 480px) {
      .page-789et-hero h1 {
        font-size: 1.5em;
      }
      .page-789et-section h2 {
        font-size: 1.3em;
      }
      .page-789et-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
      }
      .page-789et-card img {
        height: 80px;
      }
      .page-789et-floating-login {
        bottom: 10px;
        right: 10px;
        padding: 6px 15px;
      }
      .page-789et-floating-login a {
        font-size: 0.9em;
      }
    }