body {
      font-family: "Segoe UI", Arial, sans-serif;
      margin: 0;
      background-color: #f7f9fc;
      color: #333;
    }

    nav {
      background-color: #1e293b;
      padding: 10px 0;
    }

    nav ul {
      list-style: none;
      display: flex;
      justify-content: center;
      margin: 0;
      padding: 0;
    }

    nav ul li {
      position: relative;
      margin: 0 20px;
    }

    nav a {
      text-decoration: none;
      color: #fff;
      font-weight: 600;
      padding: 8px 14px;
      display: block;
      transition: background 0.3s ease;
    }

    nav a:hover {
      background: #334155;
      border-radius: 5px;
    }

    .dropdown-menu {
      display: none;
      position: absolute;
      background: #fff;
      min-width: 220px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      border-radius: 6px;
      top: 38px;
      z-index: 1000;
    }

    .dropdown-menu a {
      color: #333;
      padding: 10px 15px;
      font-weight: normal;
    }

    .dropdown-menu a:hover {
      background-color: #f1f5f9;
    }

    .dropdown:hover .dropdown-menu {
      display: block;
    }

    header {
      display: flex;
      align-items: center;
      justify-content: flex-start;
      background-color: #fff;
      border-bottom: 2px solid #e5e7eb;
      padding: 20px 40px;
    }

    header img {
      width: 100px;
      height: auto;
      margin-right: 20px;
      border-radius: 8px;
    }

    header h1 {
      color: #1e293b;
      font-size: 28px;
      margin: 0;
    }

    main {
      max-width: 1100px;
      margin: 40px auto;
      padding: 0 20px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
    }

    .card {
      background-color: #fff;
      padding: 25px;
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
    }

    .card img {
      width: 80%;
      max-width: 280px;
      height: auto;
      border-radius: 10px;
      margin-bottom: 15px;
      box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
    }

    .card h2 {
      color: #1e293b;
      font-size: 22px;
      margin-bottom: 10px;
    }

    .card p {
      line-height: 1.6;
      font-size: 16px;
      color: #475569;
    }
   
    footer {
      text-align: center;
      padding: 20px;
      background: #1e293b;
      color: #fff;
      font-size: 14px;
      margin-top: 40px;
    }