:root:lang(zh-Hant),
:root:lang(zh-Hans) {
    --serif: "Noto Serif CJK TC", "Noto Serif TC", "Noto Serif CJK SC", "Noto Serif SC", "Songti TC", "Songti SC", serif;
    --sans: "Noto Sans CJK TC", "Noto Sans TC", "Noto Sans CJK SC", "Noto Sans SC", system-ui, sans-serif;
}

.language-toggle {
    width: 40px;
    min-width: 40px;
    height: 40px;
    border: 1px solid rgba(39, 76, 65, .24);
    background: rgba(255, 255, 255, .52);
    color: var(--forest);
    font-family: var(--serif);
    font-size: 17px;
    font-weight: 900;
    line-height: 1;
}

.language-toggle:hover,
.language-toggle:focus-visible {
    border-color: var(--red);
    background: var(--white);
    color: var(--red);
}

.language-toggle:focus-visible {
    outline: 3px solid rgba(164, 57, 43, .2);
    outline-offset: 2px;
}

@media (max-width: 700px) {
    .header-actions {
        gap: 6px;
    }

    .language-toggle {
        width: 36px;
        min-width: 36px;
        height: 36px;
        font-size: 16px;
    }
}