/* Digital library: editorial covers, quiet dividers and clear book information. */
#knowledge>.ebook-library{display:block;flex:1;min-height:0;height:auto;max-height:none;aspect-ratio:auto;margin:8px 0 0;padding:0 8px 28px 0;background:none;border:0;border-radius:0;box-shadow:none;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:#a7b5c6 transparent;scrollbar-gutter:stable;overscroll-behavior:contain}
#knowledge .ebook-library .library-zone{display:block;min-height:0;max-height:none;margin:0 0 36px;padding:0;background:none;border:0;border-radius:0;box-shadow:none;overflow:visible}
#knowledge .ebook-library .library-zone>h3{height:auto;margin:0 0 20px;padding:0 0 12px;border-bottom:1px solid #cdd6e1;background:none;color:#26374f;text-shadow:none;box-shadow:none;font-family:var(--site-display-font);font-weight:400;font-size:23px;letter-spacing:0;text-align:left}
#knowledge .ebook-library .library-book-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(128px,1fr));grid-template-rows:none;align-items:start;justify-content:start;gap:24px 24px;flex:none;min-height:0;padding:0;overflow:visible}
#knowledge .ebook-library .library-book,.book-spine-choice .ebook-book{display:block;position:relative;width:100%;max-width:180px;height:auto;min-height:0;max-height:none;padding:0;background:none;border:0;border-radius:0;box-shadow:none;filter:none;transform:none;color:#24354d;text-align:left;justify-self:start;transition:transform .2s ease}
#knowledge .ebook-library .library-book::before,#knowledge .ebook-library .library-book::after,.book-spine-choice .ebook-book::before,.book-spine-choice .ebook-book::after{content:none}
#knowledge .ebook-library .library-book>span,.book-spine-choice .ebook-book>span{position:static;inset:auto;writing-mode:horizontal-tb;filter:none;transform:none;text-shadow:none;letter-spacing:0;color:inherit}
#knowledge .ebook-library .library-book>.ebook-cover,.book-spine-choice .ebook-book>.ebook-cover{position:relative;display:flex;flex-direction:column;align-items:stretch;justify-content:space-between;aspect-ratio:3/4;width:100%;padding:23px 17px 16px;background:var(--cover-color,#294c43);color:var(--cover-ink,#f6f1e5);border-radius:3px 8px 8px 3px;box-shadow:0 8px 14px #25364d18;overflow:hidden;font-family:var(--site-display-font);text-align:left}
.ebook-cover::before{content:"";position:absolute;top:0;bottom:0;left:5px;border-left:1px solid #ffffff1a;pointer-events:none}
.ebook-cover-title{font-size:clamp(21px,calc(2.1 * var(--site-vw,1vw)),28px);font-weight:400;line-height:1.35;overflow-wrap:anywhere;text-wrap:balance}
.ebook-imprint{display:block;margin-top:18px;font:11px/1.5 'PingFang SC',sans-serif;opacity:.86}
#knowledge .ebook-library .library-book>.ebook-meta{display:block;margin:14px 0 0;padding:0;font-family:'PingFang SC',sans-serif;font-size:13px;line-height:1.5}
.ebook-meta strong{display:block;font-weight:550;color:#25364d;overflow-wrap:anywhere}
.ebook-meta small{display:block;margin-top:4px;color:#53657b;font-size:11px}
#knowledge .ebook-library .library-book:hover{transform:translateY(-4px);background:none;box-shadow:none;filter:none}
#knowledge .ebook-library .library-book:focus-visible{outline:none}
#knowledge .ebook-library .library-book:focus-visible .ebook-meta strong{text-decoration:underline;text-underline-offset:4px}
#knowledge>.ebook-library:focus-visible{outline:none;box-shadow:inset 0 -1px var(--focus-ring);scrollbar-color:var(--focus-ring) transparent}
.spine-style-1 .ebook-cover::after{content:"";position:absolute;inset:12px;border:1px solid currentColor;opacity:.35;pointer-events:none}
.spine-style-2 .ebook-cover::after{content:"";position:absolute;top:0;right:17px;width:12px;height:35px;background:currentColor;opacity:.55;clip-path:polygon(0 0,100% 0,100% 100%,50% 82%,0 100%)}
.spine-style-3 .ebook-cover{border-top:9px solid #ffffff25;border-bottom:9px solid #00000016}
.spine-style-4 .ebook-cover-title{border-top:1px solid currentColor;border-bottom:1px solid currentColor;padding:12px 0}
#knowledge .ebook-library .library-zone>h3{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.library-zone-count{font:12px/1.5 'PingFang SC',sans-serif;color:#53657b;white-space:nowrap}
#knowledge .ebook-library .library-empty{margin:0;padding:22px 0;color:#53657b;text-align:left;font-size:13px}
#book-spine-grid .book-spine-choice .ebook-book{width:68px;height:92px;max-width:none}
#book-spine-grid .book-spine-choice .ebook-cover{height:100%;aspect-ratio:auto;padding:12px 9px;font-size:12px;box-shadow:0 3px 7px #25364d16}
#book-spine-grid .book-spine-choice .ebook-cover-title{font-size:15px}
@container(max-width:620px){#knowledge .ebook-library .library-book-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 14px}#knowledge .ebook-library .library-book>.ebook-cover{padding:18px 12px 12px}.ebook-cover-title{font-size:20px}#knowledge .ebook-library .library-zone>h3{font-size:21px;margin-bottom:16px}.ebook-imprint{font-size:10px}}
@media(prefers-reduced-motion:reduce){#knowledge .ebook-library .library-book{transition:none}}
#knowledge>.ebook-library{overflow-anchor:none}
#knowledge #notebook-dialog .reader-download{display:inline-flex;align-items:center;text-decoration:none;line-height:normal;border:0;border-radius:6px}
#knowledge #notebook-dialog .reader-download[hidden]{display:none}
#knowledge #notebook-dialog .reader-download:focus-visible{outline:1px solid var(--focus-ring,#717977);outline-offset:2px}

#knowledge .ebook-library .library-book>.ebook-image-cover{padding:0;background:#dce3ec}
.ebook-image-cover img{display:block;width:100%;height:100%;position:absolute;inset:0;object-fit:cover}
.ebook-image-cover::before,.ebook-image-cover::after{display:none}
#book-cover-preview{width:96px;height:128px;object-fit:cover;border-radius:5px}
#book-cover-preview[hidden]{display:none}
.book-cover-help{margin:0;color:#53657b;font-size:12px}

#knowledge .library-nav{align-items:center}
#knowledge .library-nav #library-home,#knowledge .library-nav .library-search{box-sizing:border-box;height:38px;min-height:38px;margin:0;line-height:normal}
#knowledge .library-nav #library-home{display:inline-flex;align-items:center;justify-content:center;padding:0 12px;background:#243248;color:#fff;font-weight:600}
#knowledge .library-nav .library-search{padding:0 10px}
#knowledge .library-sort{display:flex;align-items:center;gap:4px;margin-left:auto}
#knowledge .library-sort button{height:38px;padding:0 12px;color:#35465d;font-size:12px}
#knowledge .library-sort button[aria-pressed=true]{background:#dce5f0;color:#243248;font-weight:600}
#knowledge .library-sort button:focus-visible{outline:1px solid var(--focus-ring,#717977);outline-offset:2px}
#knowledge .library-search{min-width:120px;max-width:210px;flex:1 1 150px}
#knowledge.book-reading .library-sort{display:none}
.phone-landscape #knowledge .library-sort button{height:28px;min-height:28px;padding:4px 8px;font-size:10px}
.phone-landscape .library-zone-count{font-size:10px}