```css
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: white;
    overflow-x: hidden;
}

/* BARRA SUPERIOR */
.top-bar {
    background-color: black;
    color: white;
    text-align: center;
    padding: 30px;
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
}

/* NAVBAR */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: white;
    padding: 15px 30px;
}

/* LOGO */
.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: 50px;
    height: auto;
    margin-right: 10px;
}

.logo h1 {
    font-size: 22px;
}

/* MENÚ */
nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

nav ul li a {
    text-decoration: none;
    color: black;
    font-weight: bold;
    padding: 12px 18px;
    display: block;
    transition: 0.3s;
}

nav ul li a:hover {
    background-color: #d6ecff;
    border-radius: 8px;
}

/* DROPDOWN */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    list-style: none;
    padding: 10px 0;
    margin: 0;
    width: 180px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    display: none;
    z-index: 100;
}

.dropdown-menu li a {
    padding: 10px 15px;
    display: block;
    color: black;
}

.dropdown-menu li a:hover {
    background-color: #d6ecff;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

/* WHATSAPP */
.whatsapp {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 60px;
    height: 60px;
    z-index: 1000;
}

.whatsapp img {
    width: 100%;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: 0.3s;
}

.whatsapp img:hover {
    transform: scale(1.1);
}

/* BANNER */
.banner-hover {
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 30px 0;
}

.banner-hover img {
    width: 80%;
    max-width: 1100px;
    height: 500px;
    object-fit: cover;
    border-radius: 25px;
    transition: transform 0.4s ease;
}

/* ================= SECCIÓN QUIENES ================= */

.quienes {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px;
    background: white;
    gap: 20px;
}

/* TEXTO */
.contenido {
    width: 55%;
    max-width: 650px;
}

.contenido h1 {
    font-size: 40px;
}

.contenido p {
    line-height: 1.6;
}

/* ================= IMÁGENES QUIENES SOMOS ================= */

.fotos-lado {
    display: grid;
    grid-template-columns: 280px 280px;
    grid-template-rows: auto auto;
    gap: 20px;
    justify-content: center;
}

.fotos-lado img {
    width: 280px;
    height: 220px;
    object-fit: cover;
    border-radius: 14px;
    transition: 0.3s;
}

.fotos-lado img:hover {
    transform: scale(1.08);
}

/* POSICIÓN */
.fotos-lado img:nth-child(1) {
    grid-column: 1;
    grid-row: 1;
}

.fotos-lado img:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
}

.fotos-lado img:nth-child(3) {
    grid-column: 1 / 3;
    grid-row: 2;
    justify-self: center;
    width: 280px;
}

/* ================= ARREGLOS / PRODUCTOS ================= */

.seccion-lado {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 60px;
    gap: 40px;
}

.texto-lado {
    width: 50%;
}

.imagenes-lado {
    width: 50%;
    display: flex;
    flex-direction: row;
    gap: 20px;
    justify-content: center;
    align-items: center;
}

.imagenes-lado img {
    width: 45%;
    height: 550px;
    object-fit: cover;
    border-radius: 12px;
    transition: 0.3s;
}

.imagenes-lado img:hover {
    transform: scale(1.05);
}

/* ================= PRODUCTOS GRID ================= */

.productos {
    display: grid;
    gap: 20px;
    padding: 30px;
    margin: auto;
    justify-content: center;
}

.productos-2x2 {
    grid-template-columns: repeat(2, 1fr);
    max-width: 500px;
}

.productos-3x2 {
    grid-template-columns: repeat(3, 1fr);
    max-width: 800px;
}

.productos-4x2 {
    grid-template-columns: repeat(4, 1fr);
    max-width: 1100px;
}

.producto {
    text-align: center;
}

.producto img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    transition: 0.3s;
}

.producto img:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.titulo-seccion {
    grid-column: 1 / -1;
    font-weight: bold;
    margin: 10px 0;
}

/* ================= PRODUCTOS INTRO ================= */

.fotos-arreglos {
    display: flex;
    gap: 20px;
    width: 60%;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.fotos-arreglos img {
    width: 48%;
    height: 520px;
    object-fit: cover;
    border-radius: 12px;
}

/* ================= BARRA FINAL ================= */

.barra-info {
    display: flex;
    justify-content: space-around;
    background-color: #6c8bbd;
    color: white;
    padding: 15px;
}

/* ================= RESPONSIVE TABLETS ================= */

@media screen and (max-width: 1024px){

    .navbar{
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    nav ul{
        flex-wrap: wrap;
        justify-content: center;
    }

    .quienes{
        flex-direction: column;
        padding: 30px;
    }

    .contenido{
        width: 100%;
        text-align: center;
    }

    .fotos-lado{
        grid-template-columns: 1fr;
    }

    .fotos-lado img{
        width: 100%;
        height: auto;
    }

    .fotos-lado img:nth-child(3){
        width: 100%;
    }

    .seccion-lado{
        flex-direction: column;
        padding: 30px;
    }

    .texto-lado{
        width: 100%;
        text-align: center;
    }

    .imagenes-lado{
        width: 100%;
    }

    .imagenes-lado img{
        height: auto;
    }

    .fotos-arreglos{
        width: 100%;
    }

    .fotos-arreglos img{
        width: 100%;
        height: auto;
    }

    .productos-4x2{
        grid-template-columns: repeat(2,1fr);
    }

}

/* ================= RESPONSIVE CELULARES ================= */

@media screen and (max-width: 768px){

    .top-bar{
        font-size: 16px;
        padding: 20px;
    }

    .navbar{
        flex-direction: column;
        gap: 20px;
    }

    .logo{
        flex-direction: column;
        text-align: center;
    }

    .logo img{
        margin-right: 0;
        margin-bottom: 10px;
    }

    .logo h1{
        font-size: 18px;
    }

    nav ul{
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    nav ul li a{
        padding: 10px;
    }

    .dropdown-menu{
        position: static;
        width: 100%;
        box-shadow: none;
    }

    .banner-hover img{
        width: 95%;
        height: auto;
    }

    .productos-2x2,
    .productos-3x2,
    .productos-4x2{
        grid-template-columns: 1fr;
    }

    .producto img{
        height: auto;
    }

    .barra-info{
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .whatsapp{
        width: 55px;
        height: 55px;
    }

}
```