/* lock :visited links back to the brand link color so the browser default
   purple cannot leak through (notably on Furo's prev/next pager). */
a:visited {
    color: var(--color-link);
}
a:visited:hover {
    color: var(--color-link--hover);
}

/* In dark mode, render images flagged with :class: light-bg inside a white
   card so their dark axis labels / line art / text stay legible. Applied to
   colored framework figures whose authoring assumed a white page background. */
body[data-theme="dark"] img.light-bg {
    background: #ffffff;
    padding: 0.75rem;
    border-radius: 6px;
}
@media (prefers-color-scheme: dark) {
    body:not([data-theme="light"]) img.light-bg {
        background: #ffffff;
        padding: 0.75rem;
        border-radius: 6px;
    }
}