* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f3f3f3;
    color: #222;
}

.contenedor-porque {
    width: 90%;
    max-width: 1100px;
    margin: 50px auto;
    text-align: center;
}

.titulo-porque {
    font-size: 38px;
    margin-bottom: 20px;
    color: #0066ff !important;
}

.texto-intro {
    max-width: 750px;
    margin: 0 auto 45px;
    font-size: 18px;
    line-height: 1.6;
    color: #555;
}

.tarjetas-porque {
    display: flex;
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 30px;
}

.tarjeta-porque {
    width: 300px;
    min-height: 280px;
    padding: 30px 25px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 18px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.12);
    text-align: center;
    transition: 0.3s;
}

.tarjeta-porque:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.20);
}

.icono-porque {
    font-size: 50px;
    margin-bottom: 20px;
}

.tarjeta-porque h2 {
    font-size: 21px;
    margin-bottom: 18px;
    color: #222;
}

.tarjeta-porque p {
    font-size: 16px;
    line-height: 1.7;
    color: #666;
}

.volver-porque {
    display: inline-block;
    margin-top: 45px;
    padding: 12px 25px;
    background-color: #222;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 16px;
}

.volver-porque:hover {
    background-color: #444;
}