body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background-color: #f0f7f4; /* Fondo celadón muy suave */
        margin: 0;
        padding: 40px 20px;
        display: flex;
        flex-direction: column;
        align-items: center;
        color: #2c3e50;
      }

      h1 {
        color: #557a6b; 
        margin-bottom: 30px;
        font-weight: 600;
      }

      .carta {
        background-color: #ffffff;
        border-radius: 12px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        padding: 24px;
        width: 100%;
        max-width: 450px;
        box-sizing: border-box;
      }

      ul {
        list-style: none;
        padding: 0;
        margin: 0;
      }

      .item {
        margin-bottom: 12px;
      }

      .item:last-child {
        margin-bottom: 0; 
      }

      .item a {
        display: block;
        background-color: #9FE2BF; 
        color: #1c3d27; 
        text-decoration: none;
        padding: 14px 20px;
        border-radius: 8px;
        font-weight: 500;
        transition: all 0.3s ease;
        text-align: center;
      }

      .item a:hover {
        background-color: #8ecfa1; 
        transform: translateY(-2px); 
        box-shadow: 0 4px 10px rgba(142, 207, 161, 0.3);
      }