* {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }
      body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background: #f0f0f0;
        color: #333;
      }
      header {
        background: #003366;
        color: white;
        padding: 1rem 2rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
      }
      header h1 {
        font-size: 1.8rem;
      }
      nav a {
        color: white;
        text-decoration: none;
        margin-left: 1rem;
        font-size: 1rem;
      }
      .main {
        padding: 2rem;
        max-width: 1200px;
        margin: auto;
      }
      .main h2 {
        margin-bottom: 1rem;
      }
      select {
        width: 100%;
        padding: 0.5rem;
        margin-bottom: 1rem;
        font-size: 1rem;
      }
      .results {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
      }
      .card {
        background: white;
        padding: 1rem;
        border-radius: 8px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        transition: transform 0.2s;
      }
      .card:hover {
        transform: scale(1.02);
      }
      .card img {
        width: 75%;
        display: block;
        margin: 0 auto 0.5rem auto;
        border-radius: 6px;
      }
      .card h3 {
        text-align: center;
      }
      footer {
        background: #003366;
        color: white;
        text-align: center;
        padding: 1rem;
        margin-top: 2rem;
      }
      @media (max-width: 600px) {
        nav {
          width: 100%;
          margin-top: 1rem;
        }
        nav a {
          display: block;
          margin: 0.5rem 0;
        }
      }