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small{color:var(--sub);font-size:12px}.site-sidebar-ebook-list{display:grid;gap:0}.site-sidebar-ebook{display:grid;grid-template-columns:82px 1fr;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);color:var(--ink)}.site-sidebar-ebook:last-child{border-bottom:0}.site-sidebar-ebook-cover{display:grid;place-items:center;width:82px;height:82px;background:#f3f4f6;border-radius:2px;overflow:hidden}.site-sidebar-ebook-cover img{display:block;width:100%;height:100%;object-fit:cover}.site-sidebar-ebook-cover span{display:grid;place-items:center;width:56px;height:56px;border-radius:14px;background:var(--brand);color:#fff;font-size:28px;font-weight:900}.site-sidebar-ebook-body{display:grid;gap:8px;min-width:0}.site-sidebar-ebook-title{font-size:15px;line-height:1.45;color:var(--ink);display:-webkit-box;-webkit-line-clamp:1;line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}.site-sidebar-ebook small{font-size:12px;line-height:1.6;color:var(--sub);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.site-sidebar-tags{display:flex;flex-wrap:wrap;gap:8px}.site-sidebar-tags a{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:#f3f8ff;border:1px solid #d6e8ff;color:var(--brand);font-size:12px;font-weight:700}@media(max-width:980px){.with-site-sidebar{grid-template-columns:1fr}.site-sidebar{position:static}}@media(max-width:980px){.ebook-reader,.hero,.ebook-system-grid{grid-template-columns:1fr}.ebook-edu-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reader-sidebar{position:static;max-height:none}.reader-directory nav{grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}.reader-anchors{display:none}.ebook-intro-grid{grid-template-columns:1fr}.ebook-outline-row,.ebook-chapter-row{grid-template-columns:44px 1fr}.ebook-outline-row small,.ebook-chapter-row small{grid-column:2;white-space:normal}.ebook-subcategory-head{display:block}.ebook-subcategory-head .text-link{display:inline-block;margin-top:10px}}@media(max-width:760px){.topbar{display:none}.nav{flex-wrap:wrap;padding:10px 0;gap:12px}.nav-links{order:3;width:100%;overflow:auto}.nav-links a{padding:10px 12px;white-space:nowrap}.search{margin-left:0;flex:1;width:auto}.search input{width:auto}.section-head{display:block}.content{padding:20px}.hero h1,.content h1,.list-header h1{font-size:28px}.grid,.ebook-edu-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-qrs{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-friends-inner{align-items:flex-start;flex-direction:column;padding:10px 16px}.ebook-system-intro{padding:24px 20px}.ebook-outline-section{padding:18px}.error-page{padding:30px 20px}.error-page h1{font-size:32px}}
        .reader-sidebar nav,.reader-sidebar nav a{min-width:0}.reader-sidebar nav a{overflow-wrap:anywhere}
        .ebook-home-subcategory{padding-top:18px;border-top:1px solid var(--line);margin-top:18px}.ebook-home-subcategory:first-of-type{padding-top:0;border-top:0;margin-top:0}.compact-head{margin-bottom:14px}.compact-head h4{margin:4px 0 0;font-size:18px}.ebook-edu-card-body img{display:block;width:100%;height:132px;object-fit:cover;border-radius:4px;margin:0 0 14px;background:#eaf3ff}.ebook-edu-card-body{min-height:342px}.ebook-edu-card h3,.ebook-edu-card h4{margin-top:0}.ebook-edu-card:not(:has(img)) .ebook-edu-card-body:before{content:"";display:block;width:100%;height:132px;border-radius:4px;margin:0 0 14px;background:linear-gradient(135deg,#eaf3ff,#f3f4f6)}
        .error-search{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;max-width:560px;margin:26px auto}.error-search input{min-width:0;height:42px;border:1px solid var(--line);border-radius:4px;padding:0 14px;font:inherit;background:#fff}.error-search input:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,119,255,.1)}.error-categories{margin:0 auto 26px;max-width:640px}.error-categories-title{margin-bottom:14px;font-size:17px;font-weight:800}.error-categories .category-cloud{justify-content:center}.error-page>.btn{display:inline-flex}
        .brand-title{margin:0}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
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        @media(max-width:760px){
            .header{position:relative}
            .nav{width:100%;min-height:0;padding:10px 16px 0;gap:10px 12px}
            .brand{flex:0 0 auto;min-width:0}
            .brand-logo{width:auto;height:34px;max-width:132px}
            .search{flex:1 1 0;min-width:140px;width:auto;height:38px}
            .search input{width:100%;height:36px;padding:0 10px}
            .search button{flex:0 0 52px;width:52px;height:36px;padding:0}
            .nav-links{display:flex;flex-wrap:wrap;justify-content:space-between;width:100%;min-width:0;gap:0;padding:0;overflow:visible}
            .nav-links a{display:flex;flex:0 0 auto;align-items:center;justify-content:center;min-width:0;min-height:44px;padding:0 4px}
            .main{padding:20px}
            .section{margin:16px 0;padding:24px 20px}
            .ebook-family{padding:0!important}
            .reader-directory{display:none}
            .ebook-reader-main{overflow-wrap:anywhere}
            .content table{width:100%!important;max-width:100%;height:auto!important}
            .footer-main{padding:32px 0 28px}
            .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 24px}
            .footer-grid>div:first-child,.footer-qrs{grid-column:1 / -1}
            .footer-brand{margin-bottom:14px}
            .footer-qrs{gap:18px}
            .footer-friends-list{max-width:100%;overflow-x:auto;scrollbar-width:none}
            .footer-friends-list::-webkit-scrollbar{display:none}
            .footer-bottom-inner{min-height:0;padding-top:12px;padding-bottom:12px;gap:8px 16px;line-height:1.7}
        }
        .tag-content-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
        .tag-pagination{margin-top:22px;text-align:center}
        .tag-pagination-summary{margin:0 0 10px;font-size:13px;color:var(--sub)}
        .tag-pagination .pagination-wrap{margin-top:0}
        @media(max-width:1100px){.tag-content-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
        @media(max-width:760px){.tag-content-grid{grid-template-columns:1fr}}