.book-main{max-width:1120px;margin:0 auto;padding:22px 18px 80px}
.book-head{margin:6px 0 18px;border-bottom:1px solid var(--line,#e8e4da);padding-bottom:16px}
.book-head h1{font-family:var(--font-serif,Georgia,serif);font-size:1.9em;line-height:1.3;margin:0 0 8px}
.book-sub{color:#8a8478;font-size:13.5px}
.book-desc{margin:10px 0 0;color:#57503e;font-size:14.5px}
.book-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.btn-link{display:inline-block;border:1px solid #d9d2c3;border-radius:8px;padding:5px 12px;font-size:13px;color:#7a5a2b;text-decoration:none;background:#fffdf7}
.btn-link:hover{border-color:#b9a98a}
.reader-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:14px 0 12px}
.rbtn{background:#fffdf7;border:1px solid #d9d2c3;border-radius:8px;padding:5px 12px;font-size:13px;color:#4b4436;cursor:pointer;font-family:inherit}
.rbtn:hover{border-color:#b9a98a}
.rpos{font-size:13px;color:#8a8478;min-width:64px;text-align:center}
.rsp{flex:1}
.rhint{font-size:12px;color:#a39b8b}
.pdf-view{background:#8d877a;border-radius:12px;padding:14px;overflow:auto;max-height:calc(100vh - 250px);min-height:360px;text-align:center}
.pdf-view canvas{background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.25);border-radius:2px;max-width:100%}
.epub-wrap{background:#fff;border:1px solid #e2ddd1;border-radius:12px;height:calc(100vh - 290px);min-height:420px;overflow:hidden}
#epubView{width:100%;height:100%}
.epub-toc{margin-top:16px;font-size:14px}
.epub-toc summary{cursor:pointer;color:#8a6d3b}
.epub-toc ol{list-style:none;padding:0;margin:10px 0}
.epub-toc li{margin:4px 0}
.epub-toc li.toc-d1{padding-left:16px}.epub-toc li.toc-d2{padding-left:32px}
.epub-toc a{color:#4b4436;text-decoration:none;font-size:13.5px}
.epub-toc a:hover{text-decoration:underline}
.sr-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:2px}
.tag{font-size:11px;padding:1px 8px;border-radius:10px;background:#f3efe6;color:#8a7d62}
.tag-ok{background:#eaf4ec;color:#3f7a52}
.sr-empty{color:#8a8478;font-size:14px;padding:20px 0}
@media (max-width:640px){.book-head h1{font-size:1.5em}.pdf-view{padding:8px;max-height:none}.epub-wrap{height:70vh}}