style.css

/* LXGW WenKai */
@font-face {
    font-family: "LXGW WenKai";
    src: url("../plugins/siyuan-ttf-LXGWWenKaiGB-and-Twemoji/LXGWWenKai-1.510/LXGWWenKaiScreen.woff") format("woff");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: "LXGW WenKai";
    src: url("../../../appearance/fonts/LxgwWenKai-Lite-1.501/LXGWWenKaiLite-Regular.ttf") format("truetype"); /* 思源内置字体 */
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

/* Twemoji */
@font-face {
    font-family: "Twemoji";
    src: url("../plugins/siyuan-ttf-LXGWWenKaiGB-and-Twemoji/Twemoji/Twemoji-15.1.0.ttf") format("truetype");
    font-style: normal;
    font-weight: 400;
    font-display: swap;
}

:root {
    --b3-font-family: "LXGW WenKai", "Twemoji", "Emojis Additional", "Emojis Reset", BlinkMacSystemFont, Helvetica, "Luxi Sans", "DejaVu Sans", "Hiragino Sans", arial, sans-serif, emojis !important;
    --b3-font-family-emoji: "Twemoji", "Emojis Additional", emojis !important;
}