[Theme: Cubic] – Changing Font type?

Hi everyone!

I’m fairly new to the blog world and after installing and successfully posting a few entries on my blog, I’d like to be able to change the font style of my template Cubic to HELVETICA NEU.

Could anyone provide some help on how to do that? This is how my CSS currently looks in this regard:

/*————————————————————–
2.0 Typography
————————————————————–*/
body,
button,
input,
select,
textarea {
font-family: ‘Playfair Display’, serif;
}
h1,
h2,
h3,
h4,
h5,
h6,
.comment-author,
.hentry div#jp-relatedposts h3.jp-relatedposts-headline,
.hentry div.sharedaddy h3.sd-title,
.no-comments,
.page-links {
font-family: Montserrat, sans-serif;
font-weight: normal;
text-transform: uppercase;
letter-spacing: 0.0625em;
}
h1 a,
h2 a,
h3 a,
h4 a,
h5 a,
h6 a {
font-weight: normal;
}
.archive .taxonomy-description,
.comment-reply-title small,
.page-links > .page-links-title,
.search-results .page-title span {
font-family: ‘Playfair Display’, serif;
}

Thanks a lot!!