Add Google Fonts To A Genesis Theme

If you want to use Google Fonts in a Genesis Theme, you can use this snippet:

add_action( 'wp_enqueue_scripts', 'sewid_snippet_load_google_fonts' );
function sewid_snippet_load_google_fonts() {
    wp_enqueue_style( 'google-font-lato', '//fonts.googleapis.com/css?family=Lato:300,700', array(), CHILD_THEME_VERSION );
} 

Now you can use your desired font:

font-family: 'Lato', sans-serif;

Alternative Way

If you desire a CSS import, you can use:

@import url(//fonts.googleapis.com/css?family=Lato:300,700);

If possible, use the upper solution, because of the better performance.