.common-image-lightbox {padding:0;border:0;background:transparent;color:#fff4dc;width:fit-content;max-width:min(94vw,1400px);max-height:calc(100dvh - 48px);overflow:visible;}
.common-image-lightbox::backdrop {background:radial-gradient(circle at top,rgba(255,228,152,.16),transparent 32%),rgba(11,21,18,.86);backdrop-filter:blur(8px);}
.common-image-lightbox img {display:block;width:auto;height:auto;max-width:min(94vw,1400px);max-height:calc(100dvh - 48px);object-fit:contain;border-radius:22px;box-shadow:0 24px 70px #0006;background:#fff9e8;}
.common-image-lightbox > button {position:absolute;z-index:1;top:14px;right:14px;width:46px;height:46px;min-height:46px;padding:0;border:1px solid #ffecd247;border-radius:50%;background:#111d18e6;color:#fff4dc;font-size:1.9rem;line-height:1;cursor:pointer;}

/* Scoped to the reader, including the portal reader nested inside its page. */
.reader-night .reader-toolbar {background:#20362b;color:#f4eedc;border-color:#728a7b;}
.reader-night .reader-toolbar :is(button,.reader-font-label) {background:#20362b;color:#f4eedc;border-color:#728a7b;}
.reader-night .reader-toolbar button[aria-pressed="true"] {background:#d9edc8;color:#15251f;border-color:#d9edc8;}
.reader-night .reader-toolbar button:hover:not(:disabled) {background:#385744;color:#fff9e8;}
.reader-night .reader-toolbar button:disabled {background:#283c31;color:#c5cebf;opacity:1;}
.reader-night .reader-toolbar button:focus-visible {outline:3px solid #ffe39c;outline-offset:3px;}