* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box;
}
body { 
    font-family: Arial, sans-serif; 
    background-color: #f4f4f4; 
    color: #333; 
    line-height: 1.6;
}
header { 
    background-color: #1f4e79; 
    color: white; 
    padding: 15px 8%; 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
}
.logo h1 { 
    font-size: 24px;
}
nav a { 
    color: white; 
    text-decoration: none; 
    margin-left: 20px; 
    font-weight: bold;
}
nav a:hover { 
    text-decoration: underline;
}
.portada { 
    min-height: 420px; 
    background-image: linear-gradient(rgba(0,0,0,0.45), rgba(0,0,0,0.45)), url("../multimedia/portada.jpg"); 
    background-size: cover; 
    background-position: center; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    text-align: center; 
    color: white;
}
.contenido-portada { 
    padding: 20px;
}
.contenido-portada h2 { 
    font-size: 42px; 
    margin-bottom: 10px;
}
.contenido-portada p { 
    font-size: 20px; 
    margin-bottom: 25px;
}
.boton { 
    display: inline-block; 
    background-color: white;
    color: #1f4e79; 
    padding: 12px 24px; 
    text-decoration: none; 
    border-radius: 5px; 
    font-weight: bold;
}
.boton:hover { 
    background-color: #e6e6e6;
}
.bienvenida { 
    max-width: 900px; 
    margin: 0 auto; 
    padding: 50px 20px; 
    text-align: center;
}
.bienvenida h2 { 
    font-size: 32px; 
    margin-bottom: 20px; 
    color: #1f4e79;
}
.bienvenida p { 
    margin-bottom: 15px;
}
.nosotros { 
    max-width: 1100px; 
    margin: 0 auto; 
    padding: 50px 20px; 
    display: flex; 
    gap: 40px; 
    align-items: center;
}
.imagen-nosotros,.texto-nosotros {
     flex: 1;
    }
.imagen-nosotros img { 
    width: 100%; 
    border-radius: 8px;
}
.texto-nosotros h2 { 
    color: #1f4e79; 
    font-size: 32px; 
    margin-bottom: 15px;
}
.texto-nosotros h3 { 
    color: #1f4e79; 
    margin-top: 20px; 
    margin-bottom: 5px;
}
footer { 
    background-color: #1f4e79; 
    color: white; 
    text-align: center; 
    padding: 20px;
}
@media (max-width: 700px) { 
    header { 
        flex-direction: column; 
        gap: 10px; 
        text-align: center; 
    } 
    nav a { 
        margin: 0 8px; 
    } 
    .contenido-portada h2 { 
        font-size: 30px; 
    } 
    .contenido-portada p { 
        font-size: 17px; 
    } 
    .nosotros { 
        flex-direction: column; 
    }
}