Does anki support unicode private use areas?

Anki Help
1

I have some characters defined in U+F3. I’ve installed the required font, and the characters display correctly in Word.

However, I couldn’t make it work in Anki.

I’ve tried to 1) use the system font-family name and 2) put the font file in the user directory with a leading _ and quote it locally. Neither of them work.

Does anki support unicode private use areas? If so, what should I do to make it work?

Thanks.

UPDATE:
It seems to be a problem generally existed in webkit browsers.

2

To do so, you have to manually instruct each character to use that font, doing so as explained here.

3

Thanks.
I tried both methods provided in the answer but still couldn’t make it work.
The character I tested is 󲪯 U+F2AAF utf-8 character icon | UTF8-Icons.com, with html 󲪯 and CSS \F2AAF.

Following the instruction, I did:
1)put

<span aria-hidden="true" data-icon="&#993967;"></span>

at the template page

and

[data-icon]:before {
    font-family: 'WenQuanYi Zen Hei';
    content: attr(data-icon);
    speak: none;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
}

on the style page.

<span aria-hidden="true" class="icon-pencil">&#993967;</span>

on the template page and

.icon-pencil, .icon-folder {
    font-family: 'WenQuanYi Zen Hei';
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
}
.icon-pencil:before {
    content: "\F2AAF";
}
.icon-folder:before {
    content: "\F2AAF";
}

on the style page.

Neither works. A square box is shown instead.