.bk-like{color:#ffffffeb;height:38px;font-family:var(--font);cursor:pointer;background:0 0;border:1px solid #ffffff47;border-radius:99px;align-items:center;gap:7px;margin-inline-start:auto;padding:0 16px;font-size:12.5px;font-weight:700;transition:background .2s,border-color .2s,color .2s;display:inline-flex}.bk-like:hover{background:#ffffff1f;border-color:#ffffff8c}.bk-like.on{color:#ffb3bd;background:#e0526333;border-color:#e96270ad}.bk-book{aspect-ratio:2/3;perspective:700px;--bk-open:1;display:block;position:relative;container-type:inline-size}.bk-book:is(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)){--bk-open:-1}.bk-pages{top:1.5%;bottom:1.5%;box-shadow:inset calc(var(--bk-open) * 14px) 0 16px -10px #60523673;background:#f2ecdb;border-start-start-radius:3px;border-start-end-radius:2px;border-end-end-radius:2px;border-end-start-radius:3px;position:absolute;inset-inline:-5px 0}.bk-pages:before{content:"";border-radius:inherit;background:repeating-linear-gradient(#ffffffe6 0 2px,#968a7080 2px 3px);width:12px;position:absolute;inset-block:0;inset-inline-start:0}.bk-cover{color:#fff;box-shadow:calc(var(--bk-open) * 10px) 12px 24px #0d141d42;transform:rotateY(calc(var(--bk-open) * 7deg));transform-origin:calc(50% - var(--bk-open) * 50%) 50%;transition:transform .45s var(--ease), box-shadow .45s var(--ease);border-start-start-radius:3px;border-start-end-radius:9px;border-end-end-radius:9px;border-end-start-radius:3px;display:block;position:absolute;inset:0;overflow:hidden}.bk-cover:before{content:"";background:linear-gradient(calc(var(--bk-open) * 90deg), #0000004d, #ffffff12 9%, transparent 14%), linear-gradient(calc(var(--bk-open) * -205deg), #ffffff1a, transparent 45%);pointer-events:none;position:absolute;inset:0}.bk-cover .t-frame{pointer-events:none;border:1px solid #ffffff38;border-start-start-radius:2px;border-start-end-radius:6px;border-end-end-radius:6px;border-end-start-radius:2px;position:absolute;inset:6cqw}.bk-cover-img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.bk-cover:has(.bk-cover-img):before{z-index:1}.bk-word{top:-12cqw;font-family:var(--calli);opacity:.16;white-space:nowrap;pointer-events:none;font-size:40cqw;font-weight:400;line-height:1.5;position:absolute;inset-inline-end:8cqw}.bk-cover-t{inset-inline:11cqw;text-align:center;flex-direction:column;align-items:center;gap:7cqw;display:flex;position:absolute;top:46cqw}.bk-cover-t b{font-size:10.5cqw;font-weight:700;line-height:1.9}.bk-cover-t i{background:#ffffff73;width:26cqw;height:1px}.bk-cover-t>span{opacity:.85;font-size:7.5cqw}.bk-cover-pub{bottom:9cqw;text-align:center;opacity:.65;font-size:6.5cqw;position:absolute;inset-inline:0}.bk-book-mini{flex:none;width:46px}.bk-book-mini .bk-pages{inset-inline:-3px 0}.bk-book-mini .bk-pages:before{width:7px}.bk-cover-mini .bk-cover-t,.bk-cover-mini .bk-cover-pub{display:none}.bk-cover-mini .bk-word{top:6cqw;text-align:center;opacity:.85;font-size:46cqw;inset-inline:0}.bk-hero{color:#fff;background:linear-gradient(155deg,#1e3854,#101c2b);padding:54px 0 66px;position:relative;overflow:hidden}.bk-hero .motif{color:#fff;opacity:.05}.bk-hero-word{font-size:210px}.bk-hero-in{z-index:1;position:relative}.bk-hero-row{grid-template-columns:1fr 1.04fr;align-items:end;gap:46px;display:grid}.bk-hero-row h1{font-size:40px;font-weight:700;line-height:1.5}.bk-shelf{padding-inline:4px;display:block}.bk-shelf-row{perspective:900px;justify-content:center;align-items:flex-end;gap:6px;padding-inline:12px;display:flex}.bk-spine{width:41px;height:var(--h,190px);color:#fff;transition:translate .32s var(--ease), filter .32s;border-radius:4px 4px 2px 2px;flex-direction:column;flex:none;align-items:center;gap:8px;padding-block:14px 10px;display:flex;position:relative}.bk-spine:before{content:"";border-radius:inherit;pointer-events:none;background:linear-gradient(90deg,#0000004d,#ffffff24 26%,#ffffff05 55%,#0000003d);position:absolute;inset:0}.bk-spine b,.bk-spine>span{writing-mode:vertical-rl;text-orientation:mixed}.bk-spine b{max-height:calc(var(--h,190px) - 92px);white-space:nowrap;text-overflow:ellipsis;font-size:11.5px;font-weight:700;line-height:1;overflow:hidden}.bk-spine>span{opacity:.72;white-space:nowrap;text-overflow:ellipsis;max-height:64px;font-size:9.5px;overflow:hidden}.bk-spine i{border:1.5px solid #ffffff8c;border-radius:50%;width:9px;height:9px;margin-top:auto}.bk-spine:hover,.bk-spine:focus-visible{filter:brightness(1.12);translate:0 -14px}.bk-shelf-face{transform-origin:bottom;width:118px;transition:rotate .4s var(--ease), translate .4s var(--ease);flex:none;margin-inline-start:16px;display:block;translate:0 -4px;rotate:-5deg}.bk-shelf-face:hover{translate:0 -10px;rotate:none}.bk-shelf-face:hover .bk-cover{transform:rotateY(calc(var(--bk-open) * 19deg))}.bk-plank{background:linear-gradient(#ffffff38,#ffffff0f);border-radius:3px;height:11px;margin-top:2px;display:block;box-shadow:0 16px 30px #0006}.bk-arch .tk-tools{margin-top:0}.bk-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:24px;display:grid}.bk-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--bubble);transition:translate .25s var(--ease), box-shadow .25s, border-color .25s;gap:22px;padding:22px;display:flex}.bk-card:hover{translate:0 -4px;box-shadow:0 20px 44px #0d141d1f}.bk-card:hover .bk-cover{transform:rotateY(calc(var(--bk-open) * 19deg))}.bk-card-side{flex:none;align-self:flex-start;width:116px;padding-top:6px}.bk-b{flex-direction:column;flex:1;align-items:flex-start;min-width:0;display:flex}.bk-kicker{color:var(--accent-ink);margin-bottom:6px;font-size:11.5px;font-weight:700}.bk-cat{color:var(--accent-ink);background:var(--accent-soft);border-radius:99px;padding:2px 11px;font-size:11px;font-weight:700}.bk-card h3{margin-top:9px;font-size:16.5px;font-weight:700;line-height:1.9}.bk-subtitle{color:var(--faint);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-top:3px;font-size:13px;line-height:1.95;display:-webkit-box;overflow:hidden}.bk-byline{color:var(--faint);margin-top:2px;font-size:12.5px}.bk-byline i{font-style:normal}.bk-ex{color:var(--faint);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-top:10px;font-size:13px;line-height:2.05;display:-webkit-box;overflow:hidden}.bk-lead-q{color:var(--ink);margin-top:10px;font-size:15px;line-height:2.1}.bk-foot{width:100%;color:var(--faint);align-items:center;gap:14px;margin-top:auto;padding-top:14px;font-size:11.5px;display:flex}.bk-foot .arr{color:var(--accent);transition:translate .25s var(--ease);margin-inline-start:auto}.bk-card:hover .arr{translate:-5px}.bk-lead{grid-column:1/-1}.bk-lead .bk-card-side{width:158px}.bk-lead h3{font-size:21px}.bk-lead .bk-ex{-webkit-line-clamp:2;max-width:68ch}.bk-hero-single{padding:26px 0 156px}.bk-hero-single h1{max-width:760px;margin-bottom:8px;font-size:30px;font-weight:700;line-height:1.75}.bk-hero-single .bk-subtitle{color:#ffffffc7;-webkit-line-clamp:none;max-width:760px;margin:0 0 10px;font-size:17px;line-height:1.95;display:block}.bk-sub{color:#ffffffb8;margin-bottom:12px;font-size:13.5px}.bk-sub b{color:#fff;font-weight:700}.bk-id{z-index:2;background:var(--surface);border:1px solid var(--line);border-radius:var(--bubble);grid-template-columns:172px minmax(0,1fr) auto;align-items:center;gap:30px;margin-top:-84px;padding:22px 30px;display:grid;position:relative;box-shadow:0 30px 60px #0d141d24}.bk-id-cover{margin-top:-76px}.bk-id-cover:hover .bk-cover{transform:rotateY(calc(var(--bk-open) * 19deg))}.bk-id-facts{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px 26px;margin:0;display:grid}.bk-id-row dt{color:var(--faint);align-items:center;gap:5px;font-size:11px;display:flex}.bk-id-row dd{margin:3px 0 0;font-size:13.5px;font-weight:700}.bk-id-acts{flex-direction:column;align-items:stretch;gap:10px;display:flex}.bk-id-acts .cs-cta{justify-content:center}.bk-thinker-link{color:var(--accent-ink);justify-content:center;align-items:center;gap:3px;font-size:12px;font-weight:700;display:inline-flex}.bk-thinker-link:hover{text-decoration:underline}.bk-thinker-name{color:var(--ink);font-size:12px;font-weight:700}.bk-thinkers{flex-direction:column;align-items:center;gap:4px;display:flex}.bk-thinkers-h{color:var(--faint);font-size:11px}.bk-notes{grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:12px;margin:14px 0 0;padding:0;list-style:none;display:grid}.bk-note{--nk:var(--faint);background:linear-gradient(235deg, color-mix(in srgb, var(--nk) 10%, var(--surface)) 0, var(--surface) 230px);border:1px solid var(--line);border-radius:16px 16px 16px 4px;align-items:flex-start;gap:13px;padding:14px 18px 14px 16px;display:flex;position:relative;overflow:hidden}[dir=ltr] .bk-note{background:linear-gradient(125deg, color-mix(in srgb, var(--nk) 10%, var(--surface)) 0, var(--surface) 230px)}.bk-note:before{content:"";background:linear-gradient(180deg, var(--nk), color-mix(in srgb, var(--nk) 8%, transparent));width:3px;position:absolute;inset-block:0;inset-inline-start:0}.bk-note:only-child{max-width:760px}.bk-note-seal{width:34px;height:34px;color:var(--nk);background:color-mix(in srgb, var(--nk) 11%, var(--surface));box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--nk) 26%, transparent), 0 0 0 3px color-mix(in srgb, var(--nk) 7%, transparent);border-radius:50%;flex:none;place-items:center;display:grid;position:relative}.bk-note-tx{min-width:0;position:relative}.bk-note-tx b{color:var(--nk);margin-bottom:2px;font-size:10.5px;font-weight:700;display:block}.bk-note-tx p{color:var(--body-c);margin:0;font-size:13.5px;line-height:1.95}.bk-note[data-kind=award]{--nk:#8f6410}.bk-note[data-kind=foreword]{--nk:var(--accent-ink)}.bk-note[data-kind=translation]{--nk:#35688f}.bk-note[data-kind=award]:after{content:"";pointer-events:none;background:radial-gradient(circle,#d8a83c38,#0000 62%);width:190px;height:190px;position:absolute;inset-block-start:-74px;inset-inline-start:-46px}[data-theme=dark] .bk-note[data-kind=award]{--nk:#e0b355}[data-theme=dark] .bk-note[data-kind=translation]{--nk:#7fb0dc}.bk-buy{margin-top:30px}.bk-buys{gap:10px;margin:0;padding:0;list-style:none;display:grid}.bk-buy-row{--bkk:var(--accent-ink);background:var(--surface);border:1px solid var(--line);border-radius:16px 16px 16px 4px;align-items:center;gap:13px;min-height:60px;padding:12px 16px;transition:border-color .18s,background .18s,box-shadow .18s;display:flex}.bk-buy-row:hover{border-color:color-mix(in srgb, var(--bkk) 42%, var(--line));background:color-mix(in srgb, var(--bkk) 4%, var(--surface));box-shadow:0 8px 22px #0d141d12}.bk-buy-seal{width:38px;height:38px;color:var(--bkk);background:color-mix(in srgb, var(--bkk) 11%, var(--surface));box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--bkk) 26%, transparent);border-radius:50%;flex:none;place-items:center;display:grid}.bk-buy-tx{flex:1;min-width:0;line-height:1.9}.bk-buy-tx b{flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;font-weight:700;display:flex}.bk-buy-row:hover .bk-buy-tx b{color:var(--bkk)}.bk-buy-kind{color:var(--bkk);background:color-mix(in srgb, var(--bkk) 12%, transparent);border-radius:99px;padding:1px 9px;font-size:10.5px;font-weight:700}.bk-buy-note{color:var(--body-c);font-size:12.5px;display:block}.bk-buy-host{color:var(--faint);font-size:11px;display:inline-block}.bk-buy-go{color:var(--faint);transition:color .18s, translate .2s var(--ease);flex:none}.bk-buy-row:hover .bk-buy-go{color:var(--bkk);translate:-2px -2px}[dir=ltr] .bk-buy-row:hover .bk-buy-go{translate:2px -2px}.bk-buy-row[data-kind=ebook]{--bkk:#35688f}.bk-buy-row[data-kind=audio]{--bkk:#7a4c8c}.bk-buy-row[data-kind=free]{--bkk:#2f7d5b}[data-theme=dark] .bk-buy-row[data-kind=ebook]{--bkk:#7fb0dc}[data-theme=dark] .bk-buy-row[data-kind=audio]{--bkk:#c7a0dc}[data-theme=dark] .bk-buy-row[data-kind=free]{--bkk:#6fc39b}.bk-buy-legal{color:var(--faint);margin:12px 2px 0;font-size:11.5px;line-height:2}.bk-body{grid-template-columns:minmax(0,1fr) 332px;gap:48px;display:grid}.bk-main>div+div{margin-top:38px}.bk-why{gap:10px;padding:0;list-style:none;display:grid}.bk-why li{gap:10px;font-size:14px;line-height:2;display:flex}.bk-why svg{color:#1fa671;flex:none;margin-top:7px}.bk-page{background:var(--tint-sand-bg);border:1px solid var(--line);border-radius:4px;border-start-end-radius:0;margin:0;padding:26px 32px 24px;position:relative;box-shadow:0 14px 30px #0d141d12}.bk-page:after{content:"";top:0;background:linear-gradient(225deg, var(--paper) 50%, #0000001f 50%);filter:drop-shadow(-2px 2px 2px #0d141d1f);border-end-start-radius:10px;width:36px;height:36px;position:absolute;inset-inline-end:0}.bk-page figcaption{color:var(--accent-ink);align-items:center;gap:6px;margin-bottom:10px;font-size:11.5px;font-weight:700;display:flex}.bk-page blockquote{font-family:"Noto Naskh Arabic", var(--font);color:var(--ink);margin:0;font-size:19px;line-height:2.2}.bk-page-from{color:var(--faint);margin-top:8px;font-size:12.5px;display:block}.bk-toc{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;margin:0;padding:0;list-style:none;display:grid}.bk-toc li{border-bottom:1px dashed var(--line);align-items:baseline;gap:10px;padding:10px 0;font-size:13.5px;display:flex}.bk-toc b{color:var(--accent-ink);font-size:11.5px}.bk-side{align-self:start;position:sticky;top:80px}.bk-rel{gap:10px;display:grid}.bk-rel-row{background:var(--surface);border:1px solid var(--line);transition:border-color .2s, translate .2s var(--ease);border-radius:16px;align-items:center;gap:14px;padding:10px 14px;display:flex}.bk-rel-row:hover{border-color:var(--accent);translate:0 -2px}.bk-rel-row:hover .bk-cover{transform:rotateY(calc(var(--bk-open) * 17deg))}.bk-rel-row .tk-row-tx h4{font-size:13px;line-height:1.8}@media (max-width:1080px){.bk-body{grid-template-columns:1fr;gap:38px}.bk-side{position:static}.bk-id{grid-template-columns:150px minmax(0,1fr)}.bk-id-acts{flex-direction:row;grid-column:1/-1;align-items:center}}@media (max-width:900px){.bk-hero{padding:40px 0 56px}.bk-hero-row{grid-template-columns:1fr;gap:40px}.bk-shelf-row{scrollbar-width:thin;justify-content:flex-start;padding-bottom:4px;overflow-x:auto}.bk-grid{grid-template-columns:1fr}.bk-hero-word{font-size:150px}}@media (max-width:640px){.bk-card{gap:16px;padding:16px}.bk-card-side,.bk-lead .bk-card-side{width:88px}.bk-card h3,.bk-lead h3{font-size:15px}.bk-subtitle{-webkit-line-clamp:1;font-size:12.5px}.bk-hero-single .bk-subtitle{font-size:15px}.bk-lead-q{display:none}.bk-id{grid-template-columns:1fr;gap:20px;margin-top:-66px;padding:20px}.bk-id-cover{width:132px;margin:-70px auto 0}.bk-id-facts{grid-template-columns:repeat(2,minmax(0,1fr))}.bk-id-acts{flex-direction:column}.bk-toc{grid-template-columns:1fr}.bk-page{padding:20px 22px 18px}.bk-page blockquote{font-size:17px}.bk-hero-single{padding-bottom:136px}}.bk-grid>div{min-width:0}.bk-grid .bk-card{height:100%}.bk-cell-lead{grid-column:1/-1}@media (prefers-reduced-motion:no-preference){.bk-spine{animation:bk-lean 30s ease-in-out calc(2.5s + var(--i,0) * 2.3s) infinite}}