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

.preg-contenedor {
    max-width: 1300px!important;
    margin: 0 auto;
    padding: 40px 20px;
    font-family: 'Montserrat', sans-serif;
    color: #333;
    margin-top: 80px;
}

.preg-titulo-principal {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.2;
    color: #222;
    margin: 0 0 40px;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
}

.preg-titulo-principal::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: #3d6e6e;
    transition: all 0.4s ease;
}

.preg-titulo-principal:hover::after {
    width: 200px;
    background: #2a4e4e;
}

.preg-lista {
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
}

.preg-item {
    border-bottom: 1px solid #eaeaea;
    transition: all 0.3s ease;
}

.preg-item:last-child {
    border-bottom: none;
}

.preg-cabecera {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preg-cabecera:hover {
    background-color: #f5f5f5;
}

.preg-cabecera span {
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: -0.1px;
    line-height: 1.5;
    color: #333;
    flex: 1;
    margin-right: 20px;
    transition: all 0.3s ease;
}

.preg-icono {
    color: #3d6e6e;
    transition: all 0.3s ease;
    font-size: 1.2rem;
    min-width: 20px;
    text-align: center;
}

.preg-respuesta {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    background-color: #fafafa;
}

.preg-respuesta p {
    padding: 20px 0;
    margin: 0;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: 0.1px;
    color: #555;
}

.preg-item.activo .preg-cabecera {
    background-color: #f1f1f1;
}

.preg-item.activo .preg-cabecera span {
    color: #000;
    font-weight: 500;
}

.preg-item.activo .preg-icono {
    transform: rotate(45deg);
    color: #000;
}

.preg-cabecera:hover span {
    color: #000;
    position: relative;
}

@media (max-width: 768px) {
    .preg-contenedor {
        padding: 30px 15px;
    }

    .preg-titulo-principal {
        font-size: 1.8rem;
        letter-spacing: -0.3px;
        margin-bottom: 30px;
        padding-bottom: 15px;
    }

    .preg-titulo-principal::after {
        height: 3px;
    }

    .preg-cabecera {
        padding: 18px 20px;
    }

    .preg-cabecera span {
        font-size: 1rem;
        line-height: 1.4;
    }

    .preg-respuesta p {
        font-size: 0.95rem;
        line-height: 1.6;
        padding: 15px 0;
    }
}

@media (max-width: 480px) {
    .preg-titulo-principal {
        font-size: 1.6rem;
    }

    .preg-cabecera {
        padding: 15px 18px;
    }

    .preg-cabecera span {
        font-size: 0.95rem;
    }

    .preg-respuesta {
        padding: 0 18px;
    }

    .preg-respuesta p {
        font-size: 0.9rem;
    }
}