/* Readable fallback when JavaScript is unavailable. */
.seo-book-directory { margin: 0 0 34px; }
.seo-book-directory h3 { margin-bottom: 16px; font-family: var(--display-font); font-size: 22px; }
.seo-book-directory h3 a:hover, .seo-reader-directory a:hover { color: var(--brick); }
.seo-reader-directory { text-align: center; padding: 8px 0 38px; color: var(--reader-muted, var(--muted)); font-size: 14px; }
.chapter-nav [aria-disabled="true"] { opacity: .5; }