.simple-book-panel{margin-top:14px;padding-top:14px;border-top:1px solid var(--line,#d4c9ba)}
.simple-book-panel>header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.simple-book-panel>header p{margin:4px 0;color:var(--muted,#70675d);font-size:12px}
.simple-book-panel .class-textbook-list details{margin-top:8px;font-size:12px}
.simple-book-note{display:flex;align-items:center;gap:10px;margin-top:6px;flex-wrap:wrap}
.simple-book-error{color:#a33120;grid-column:1/-1}
.simple-page-history{padding:14px;border:1px solid var(--line,#d4c9ba);border-radius:12px;margin-top:12px;background:var(--surface,#fffdf9)}
.simple-page-history h3{margin:0 0 10px;font-size:14px}
.simple-page-history article{padding:10px 0;border-top:1px solid var(--line,#d4c9ba)}
.simple-page-history small{display:block;color:var(--muted,#70675d);margin-top:3px}
.simple-page-history p{margin:5px 0;font-size:12px}
@media(max-width:520px){.simple-book-panel>header{align-items:start;flex-direction:column}.simple-book-panel .class-textbook-list article{grid-template-columns:50px minmax(0,1fr)}.simple-book-panel .class-textbook-list article>div:last-child{grid-column:1/-1;display:flex;gap:6px;flex-wrap:wrap}}