/* Additional layout for YAML-derived Japanese books; shared reader styles stay intact. */
.yaml-book-toc { margin: 2em 0; }
.yaml-book-toc ul { padding-left: 1.3em; }
.yaml-book-toc li { margin: .35em 0; }
.yaml-book-toc details { margin: .35em 0 1em; }
.yaml-book-toc summary { cursor: pointer; color: var(--muted); font-family: var(--ui-font); font-size: .85em; }
.yaml-book-section, .yaml-book-section [id] { scroll-margin-top: calc(var(--header-h) + 24px); }
.yaml-book-section .reader-footnote { color: var(--muted); font-size: .85em; line-height: 1.7; margin: .4em 0 1em; }
.yaml-book-section .reader-footnote-label { margin-right: .4em; font-family: var(--ui-font); }
.yaml-figure-reference small { color: var(--muted); font-family: var(--ui-font); font-size: .75em; }
.yaml-book-figure { margin: 1.6rem auto; max-width: 100%; text-align: center; break-inside: avoid; }
.yaml-book-figure > a { display: block; }
.yaml-book-figure img { display: block; max-width: 100%; height: auto; margin-inline: auto; background: #fff; border: 1px solid var(--line); border-radius: 4px; }
.yaml-book-figure figcaption { margin-top: .6rem; font-size: .875rem; line-height: 1.65; overflow-wrap: anywhere; color: var(--muted); }
.yaml-figure-credit, .yaml-figure-source { display: block; }