* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: Arial, Helvetica, sans-serif;
    }

    body {
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        min-height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .contenedor {
        background: white;
        width: 450px;
        padding: 40px;
        border-radius: 15px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        text-align: center;
    }

    h1 {
        color: #1e3c72;
        margin-bottom: 15px;
    }

    p {
        color: #555;
        margin-bottom: 30px;
        line-height: 1.5;
    }

    ul {
        list-style: none;
    }

    li {
        margin-bottom: 15px;
    }

    a {
        display: block;
        text-decoration: none;
        background: #2a5298;
        color: white;
        padding: 15px;
        border-radius: 8px;
        transition: 0.3s;
    }

    a:hover {
        background: #1e3c72;
        transform: scale(1.03);
    }

    footer {
        margin-top: 30px;
        color: #888;
        font-size: 14px;
    }