* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #ffffff 0%, #000000 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    padding: 20px;
}
.contenido {
    text-align: center;
    max-width: 600px;
    width: 100%;
    animation: entrada 1.5s ease-out;
}
@keyframes entrada {
    from { 
        opacity: 0; 
        transform: translateY(30px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}
.logo { 
    width: 200px; 
    height: auto; 
    margin-bottom: 30px; 
}
h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}
.subtitulo {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    font-weight: 300;
}
.redes {
    display: flex;
    justify-content: center;
    gap: 25px;
    font-size: 1.8rem;
}
.redes a {
    color: #fff;
    transition: 0.3s;
    opacity: 0.8;
}
.redes a:hover {
    opacity: 1;
    transform: scale(1.2);
}
@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
}