:root{--lib-ink:#172033;--lib-muted:#667085;--lib-line:#e4e7ec;--lib-surface:#fff;--lib-soft:#f5f7fa;--lib-brand:#155eef;--lib-brand-dark:#004eeb;--lib-radius:14px;--lib-shadow:0 10px 30px rgba(16,24,40,.08)}
.lib-site-main{color:var(--lib-ink);font-size:16px;line-height:1.65}.lib-site-main *{box-sizing:border-box}.lib-shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}.lib-hero{padding:64px 0 58px;background:linear-gradient(135deg,#eff4ff 0%,#f8f9fc 52%,#f0f9ff 100%);border-bottom:1px solid #dfe7f5;text-align:center}.lib-eyebrow{margin:0 0 8px;color:var(--lib-brand);font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.lib-hero h1{margin:0;color:var(--lib-ink);font-size:clamp(34px,5vw,56px);line-height:1.08;letter-spacing:-.035em}.lib-hero-copy{max-width:600px;margin:14px auto 0;color:var(--lib-muted);font-size:18px}.lib-search-form{display:flex;max-width:760px;margin:30px auto 0;padding:7px;background:#fff;border:1px solid rgba(21,94,239,.16);border-radius:14px;box-shadow:0 14px 35px rgba(16,24,40,.12)}.lib-search-form input{flex:1;min-width:0;height:48px;padding:0 15px!important;border:0!important;background:transparent!important;box-shadow:none!important;color:var(--lib-ink)}.lib-search-form input:focus{outline:2px solid transparent}.lib-search-form button,.lib-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:46px;padding:10px 20px;border:1px solid var(--lib-brand);border-radius:9px;background:var(--lib-brand);color:#fff!important;font-weight:700;line-height:1.2;text-decoration:none!important;cursor:pointer;transition:background .18s,border-color .18s,transform .18s}.lib-search-form button:hover,.lib-button:hover{background:var(--lib-brand-dark);border-color:var(--lib-brand-dark);transform:translateY(-1px)}.lib-catalog-body{padding-top:34px;padding-bottom:70px}.lib-filters{display:flex;align-items:end;gap:12px;padding:18px;border:1px solid var(--lib-line);border-radius:var(--lib-radius);background:var(--lib-surface)}.lib-filter-field{flex:1;min-width:120px}.lib-filter-field label{display:block;margin:0 0 5px;color:#344054;font-size:12px;font-weight:700;text-transform:uppercase}.lib-filter-field input{width:100%;height:44px;margin:0!important;padding:8px 12px!important;border:1px solid #d0d5dd!important;border-radius:8px!important;background:#fff!important;box-shadow:none!important}.lib-button-secondary{min-height:44px}.lib-clear{padding:10px 5px;color:var(--lib-muted);font-weight:600}.lib-results-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:38px 0 18px}.lib-results-heading h2{margin:0;font-size:25px;line-height:1.3}.lib-backend,.lib-badge{display:inline-flex;padding:4px 9px;border-radius:999px;background:#eff4ff;color:#004eeb;font-size:11px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.lib-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.lib-book{overflow:hidden;border:1px solid var(--lib-line);border-radius:var(--lib-radius);background:var(--lib-surface);box-shadow:0 1px 2px rgba(16,24,40,.04);transition:transform .2s,box-shadow .2s}.lib-book:hover{transform:translateY(-4px);box-shadow:var(--lib-shadow)}.lib-book-cover{display:block;aspect-ratio:3/4;background:#e9edf3;overflow:hidden}.lib-book-cover img,.lib-detail-cover img{display:block;width:100%;height:100%;object-fit:cover}.lib-cover-placeholder{display:flex;width:100%;height:100%;align-items:center;justify-content:center;padding:20px;background:linear-gradient(145deg,#253858,#101828);color:rgba(255,255,255,.72);font:800 13px/1.2 sans-serif;letter-spacing:.2em;text-align:center}.lib-cover-placeholder span{padding:13px 10px;border-block:1px solid rgba(255,255,255,.3)}.lib-book-info{padding:17px}.lib-book h3{display:-webkit-box;overflow:hidden;margin:0 0 8px;font-size:17px;line-height:1.35;-webkit-box-orient:vertical;-webkit-line-clamp:2}.lib-book h3 a{color:var(--lib-ink);text-decoration:none}.lib-book-facts{overflow:hidden;margin:0 0 13px;color:var(--lib-muted);font-size:13px;white-space:nowrap;text-overflow:ellipsis}.lib-text-link{color:var(--lib-brand);font-size:14px;font-weight:700;text-decoration:none}.lib-empty{margin:30px 0;padding:60px 20px;border:1px dashed #cbd5e1;border-radius:var(--lib-radius);background:var(--lib-soft);text-align:center}.lib-empty>span{display:block;color:#98a2b3;font-size:48px;line-height:1}.lib-empty h2{margin:14px 0 5px}.lib-empty p{margin:0;color:var(--lib-muted)}.lib-pagination{display:flex;justify-content:center;margin-top:38px}.lib-single{padding:34px 0 80px;background:#f8fafc}.lib-breadcrumb{display:flex;overflow:hidden;align-items:center;gap:9px;margin-bottom:26px;color:var(--lib-muted);font-size:13px;white-space:nowrap}.lib-breadcrumb a{color:var(--lib-brand);text-decoration:none}.lib-breadcrumb span:last-child{overflow:hidden;text-overflow:ellipsis}.lib-detail{display:grid;grid-template-columns:minmax(220px,300px) minmax(0,1fr);gap:48px;align-items:start}.lib-cover-column{position:sticky;top:32px}.lib-detail-cover{overflow:hidden;aspect-ratio:3/4;border-radius:var(--lib-radius);background:#e9edf3;box-shadow:var(--lib-shadow)}.lib-title-block{padding-bottom:26px;border-bottom:1px solid var(--lib-line)}.lib-title-block h1{margin:10px 0 8px;color:var(--lib-ink);font-size:clamp(32px,4vw,50px);line-height:1.12;letter-spacing:-.035em}.lib-subtitle{margin:0;color:var(--lib-muted);font-size:20px}.lib-byline{margin:16px 0 0;color:#344054;font-weight:650}.lib-info-panel,.lib-description{margin-top:30px}.lib-info-panel h2,.lib-description h2,.lib-file-panel h2{margin:0 0 14px;font-size:20px}.lib-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:0;border:1px solid var(--lib-line);border-radius:12px;background:#fff}.lib-meta>div{padding:14px 16px;border-bottom:1px solid var(--lib-line)}.lib-meta>div:nth-last-child(-n+2){border-bottom:0}.lib-meta dt{color:var(--lib-muted);font-size:12px;font-weight:700;text-transform:uppercase}.lib-meta dd{margin:3px 0 0;color:var(--lib-ink);font-weight:600;overflow-wrap:anywhere}.lib-subjects{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.lib-subjects span{padding:5px 10px;border:1px solid #d1e0ff;border-radius:999px;background:#f5f8ff;color:#1849a9;font-size:13px}.lib-description{font-size:17px}.lib-description p:last-child{margin-bottom:0}.lib-file-panel{margin-top:18px;padding:18px;border:1px solid var(--lib-line);border-radius:12px;background:#fff}.lib-file-panel h2{font-size:16px}.lib-file-panel ul{list-style:none;margin:0;padding:0}.lib-file-panel li{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-top:1px solid #eef0f3;font-size:13px}.lib-file-panel li:first-child{border-top:0}.lib-file-panel li span{color:var(--lib-muted)}
@media(max-width:960px){.lib-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lib-detail{grid-template-columns:220px minmax(0,1fr);gap:32px}}
@media(max-width:720px){.lib-shell{width:min(100% - 28px,1180px)}.lib-hero{padding:46px 0}.lib-search-form{padding:5px}.lib-search-form button{padding-inline:14px}.lib-filters{align-items:stretch;flex-wrap:wrap}.lib-filter-field{flex-basis:calc(50% - 8px)}.lib-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.lib-detail{grid-template-columns:1fr}.lib-cover-column{position:static;width:min(260px,82vw);margin-inline:auto}.lib-detail-content{min-width:0}.lib-meta{grid-template-columns:1fr}.lib-meta>div:nth-last-child(2){border-bottom:1px solid var(--lib-line)}}
@media(max-width:440px){.lib-search-form{display:block;background:transparent;border:0;box-shadow:none;padding:0}.lib-search-form input{height:48px!important;border:1px solid #d0d5dd!important;border-radius:9px!important;background:#fff!important}.lib-search-form button{width:100%;margin-top:8px}.lib-filter-field{flex-basis:100%}.lib-filters .lib-button{width:100%}.lib-clear{text-align:center}.lib-results-heading{align-items:flex-start}.lib-grid{grid-template-columns:1fr}.lib-book{display:grid;grid-template-columns:112px 1fr}.lib-book-cover{height:100%;min-height:158px}.lib-book-info{padding:15px}.lib-title-block h1{font-size:32px}}