.book-detail{--book-detail-gap:28px;--reference-size-hero:44px;--reference-size-section:28px}.book-detail .book-breadcrumb{margin:0 0 14px;font-size:12px}.book-detail .book-hero{grid-template-columns:minmax(0,1fr) 210px;align-items:center;gap:28px;margin:0 0 24px;padding:22px 26px}.book-detail h1{max-width:850px;margin:0 0 12px}.book-detail .book-intro{margin-bottom:12px;font-size:16px;line-height:1.5}.book-detail .book-format{color:var(--text-secondary);margin:0 0 14px;font-size:13px}.book-detail .book-cover-stage{background:var(--surface-subtle);align-self:stretch;padding:12px}.book-detail .book-cover{border-left-width:3px;max-width:170px;transform:none;box-shadow:6px 9px 14px #253d3220}.book-detail .book-download{grid-template-columns:minmax(0,1fr) auto;gap:10px 16px;max-width:680px;padding:14px}.book-detail .book-paper-field{align-items:center;gap:10px;min-width:0;display:flex}.book-detail .book-paper-field label{white-space:nowrap}.book-detail .book-paper-field select{width:100%;min-height:44px;padding:8px}.book-detail .book-download>.book-button{white-space:nowrap;grid-column:auto;min-height:44px;padding:10px 16px}.book-detail .book-download-secondary{justify-content:flex-start;gap:8px 24px}.book-detail .book-section{margin:var(--book-detail-gap) 0}.book-detail .book-preview-heading{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:14px;display:flex}.book-detail h2{margin:0;font-size:28px!important}.book-detail .book-preview-heading>span{color:var(--text-secondary);font-size:12px}.book-detail .book-page-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:20px 16px}.book-detail .book-page-image{background:var(--surface-card);padding:8px 8px 24px}.book-detail .book-page-image img{aspect-ratio:2/3;box-shadow:none}.book-detail .book-page h3{margin:8px 0 0;font-size:15px;line-height:1.4}.book-detail .book-page h3 a{text-decoration:none}.book-detail .book-single-note{color:var(--text-secondary);flex-wrap:wrap;gap:6px 16px;margin:14px 0 0;font-size:13px;display:flex}.book-detail :is(.book-single-note,.book-custom-link) a{align-items:center;gap:5px;display:inline-flex}.book-detail .book-print-guide{background:var(--surface-card);border:1px solid var(--border-soft);border-radius:var(--panel-radius);padding:20px 24px}.book-detail .book-print-guide ul{margin:12px 0;padding-left:20px;font-size:14px}.book-detail .book-print-guide li+li{margin-top:4px}.book-detail .book-related .book-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}.book-detail .book-related .book-card{padding:14px}.book-detail .book-related .book-card-media{height:180px;padding:12px}.book-detail .book-related .book-card :is(h2,h3){margin:12px 0 8px;font-size:18px!important}.book-detail .book-custom-link{margin-top:24px;font-size:14px}@media (max-width:1199px){.book-detail .book-page-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (max-width:900px){.book-detail .book-hero{grid-template-columns:minmax(0,1fr) 160px;gap:20px;padding:20px}.book-detail .book-paper-field{flex-direction:column;align-items:stretch;gap:4px}.book-detail .book-download{align-items:end}.book-detail .book-cover{max-width:140px}.book-detail .book-page-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:650px){.book-detail{--book-detail-gap:24px;--reference-size-hero:30px;--reference-size-section:24px}.book-detail .book-breadcrumb>span:last-child{display:none}.book-detail .book-hero{grid-template-columns:minmax(0,1fr) 76px;align-items:start;gap:12px;padding:16px}.book-detail .book-hero-copy{display:contents}.book-detail h1{grid-area:1/1;margin:0;line-height:1.15;font-size:30px!important}.book-detail .book-cover-stage{grid-area:1/2;align-self:start;margin:0;padding:4px}.book-detail .book-cover{border-left-width:2px;width:100%;max-width:68px}.book-detail .book-intro{grid-column:1/-1;margin:0;font-size:15px}.book-detail .book-format{grid-column:1/-1;margin:0;font-size:12px}.book-detail .book-download{grid-column:1/-1;gap:8px;width:100%;padding:10px}.book-detail .book-paper-field{gap:4px}.book-detail .book-download>.book-button{padding:10px;font-size:13px}.book-detail .book-download-secondary{gap:4px 14px;font-size:11px}.book-detail .book-download-secondary a{min-height:36px}.book-detail .book-preview-heading{flex-direction:column;align-items:start;gap:4px;margin-bottom:12px}.book-detail h2{font-size:24px!important}.book-detail .book-page-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 10px}.book-detail .book-page h3{font-size:13px}.book-detail .book-print-guide{padding:16px}.book-detail .book-related .book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.book-detail .book-related .book-card{padding:10px}.book-detail .book-related .book-card-media{height:150px;padding:8px}.book-detail .book-related .book-card :is(h2,h3){font-size:15px!important}}