.books-page{--bk-cover-w:132px;--bk-shelf-h:210px;padding-bottom:8px}.books-page h1{letter-spacing:-.05em;text-wrap:balance;max-width:14ch;margin-bottom:18px;font-size:clamp(36px,6vw,64px);font-weight:500;line-height:1.06}.books-page h2{letter-spacing:-.04em;margin-bottom:12px;font-size:clamp(28px,4vw,44px);line-height:1.1}.books-page #shelf,.books-page .bk-block,.books-page #start,.books-page #on-shelves,.books-page #similar{scroll-margin-top:calc(var(--site-header-height) + 16px)}.bk-hero{position:relative;overflow:hidden}.bk-hero-art{object-fit:cover;object-position:80% 50%;opacity:.9;pointer-events:none;width:100%;height:100%;position:absolute;inset:0}.bk-hero:after{content:"";background:linear-gradient(180deg, #f6f7f81a 0%, #f6f7f84d 70%, var(--paper) 100%);pointer-events:none;position:absolute;inset:0}.bk-hero .wrap{z-index:1;padding-block:56px 40px;position:relative}@media (min-width:900px){.bk-hero .wrap{padding-block:96px 72px}}.bk-crumbs{color:var(--muted);flex-wrap:wrap;gap:8px;margin-bottom:14px;font-size:14px;display:flex}.bk-crumbs>span{gap:8px;display:inline-flex}.bk-crumbs a{color:var(--steel)}.bk-crumbs a:hover{text-underline-offset:3px;text-decoration:underline}.bk-lede{color:#2a313b;max-width:640px;font-size:18px;line-height:28px}.bk-controls{gap:14px;margin:28px 0 24px;display:grid}.bk-controls-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.bk-seg{border:1px solid var(--line);background:var(--white);border-radius:999px;gap:4px;width:max-content;max-width:100%;padding:4px;display:inline-flex}.bk-seg a{min-height:40px;color:var(--muted);white-space:nowrap;border-radius:999px;align-items:center;padding:0 18px;font-size:15px;font-weight:500;display:inline-flex}.bk-seg a[aria-current=page]{background:var(--ink);color:var(--white)}.bk-lang-select select{appearance:none;border:1px solid var(--line);background:var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23171B21' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 18px center / 12px;min-height:50px;font:inherit;color:var(--ink);cursor:pointer;border-radius:999px;padding:0 44px 0 20px;font-size:15px;font-weight:500}.bk-lang-select select:hover{border-color:#c5cfda}.bk-chips{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.bk-chip{border:1px solid var(--line);background:var(--white);border-radius:999px;align-items:center;gap:6px;min-height:36px;padding:0 14px;font-size:14px;transition:background .15s,border-color .15s;display:inline-flex}.bk-chip:hover{border-color:#c5cfda}.bk-chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--white)}.bk-chip .bk-n{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.bk-chip[aria-pressed=true] .bk-n{color:#aeb8c4}.bk-chip-go{background:var(--blue);color:var(--steel);border-color:#b9d7f4}.bk-case{background:radial-gradient(120% 80% at 100% 0,#76b5e859,#0000 60%),radial-gradient(90% 70% at 0 100%,#ffc58d38,#0000 60%),linear-gradient(#e4f0fc,#eef4fa);border-radius:28px;padding:36px clamp(16px,3vw,40px) 12px}.bk-case-client{background:radial-gradient(120% 80% at 100% 0,#bdd6a373,#0000 60%),radial-gradient(90% 70% at 0 100%,#ffc58d4d,#0000 60%),linear-gradient(#eef4e6,#f4f6f1)}.bk-shelf{grid-template-columns:repeat(auto-fill, minmax(var(--bk-cover-w), 1fr));gap:36px clamp(14px,2.4vw,32px);margin-bottom:28px;display:grid}.bk-book{grid-template-columns:minmax(0,1fr);grid-template-rows:var(--bk-shelf-h) auto;min-width:0;display:grid}.bk-stand{justify-content:center;align-items:flex-end;padding-bottom:12px;display:flex;position:relative}.bk-stand:after{content:"";background:linear-gradient(#fffffff2,#dce6f0 70%,#c9d6e3);height:12px;position:absolute;bottom:0;left:calc(-1*clamp(7px,1.2vw,16px));right:calc(-1*clamp(7px,1.2vw,16px));box-shadow:0 10px 18px -8px #171b2159}.bk-cover-link{width:100%;max-width:132px;transition:transform .2s;display:block;position:relative}.bk-cover-link:hover{transform:translateY(-6px)}.bk-cover-link:focus-visible{outline:2px solid var(--cobalt);outline-offset:4px;box-shadow:none}.bk-cover{background:var(--white);border-radius:2px 5px 5px 2px;width:100%;display:block;position:relative;overflow:hidden;box-shadow:0 1px 1px #171b2126,0 12px 22px -10px #171b218c}.bk-cover img{width:100%;height:auto;max-height:calc(var(--bk-shelf-h) - 16px);object-fit:cover}.bk-cover:after{content:"";pointer-events:none;background:linear-gradient(90deg,#00000038 0,#ffffff47 2.5%,#0000000d 5%,#0000 9%);position:absolute;inset:0}.bk-rank{z-index:1;background:var(--ink);min-width:28px;height:28px;color:var(--white);font-variant-numeric:tabular-nums;border-radius:999px;place-items:center;padding:0 7px;font-size:13px;font-weight:600;display:grid;position:absolute;top:-8px;left:-8px;box-shadow:0 2px 6px #171b2140}.bk-tcover{aspect-ratio:330/474;min-height:0;color:var(--white);flex-direction:column;justify-content:space-between;gap:6px;padding:14px 12px;display:flex}.bk-stand .bk-tcover{max-height:calc(var(--bk-shelf-h) - 16px)}.bk-tc-a,.bk-tc-t{-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.bk-tc-a{-webkit-line-clamp:2;letter-spacing:.04em;text-transform:uppercase;opacity:.85;font-size:11px}.bk-tc-t{-webkit-line-clamp:6;letter-spacing:-.01em;text-wrap:balance;overflow-wrap:anywhere;-webkit-hyphens:auto;hyphens:auto;font-size:14px;font-weight:600;line-height:1.15}.bk-tc-steel{background:linear-gradient(160deg,#4a77a6,#2b4c6e)}.bk-tc-blue{background:linear-gradient(160deg,#3c7be0,#1f4e9e)}.bk-tc-apricot{background:linear-gradient(160deg,#f6b072,#d9824a)}.bk-tc-sage{background:linear-gradient(160deg,#94bc79,#5f8a4a)}.bk-tc-lav{background:linear-gradient(160deg,#9c8fd8,#6a5db0)}.bk-cap{grid-template-columns:minmax(0,1fr);align-content:start;gap:3px;min-width:0;padding:14px 2px 0;display:grid}.bk-title{-webkit-line-clamp:2;overflow-wrap:anywhere;-webkit-hyphens:auto;hyphens:auto;-webkit-box-orient:vertical;font-size:14px;font-weight:500;line-height:18px;display:-webkit-box;overflow:hidden}.bk-title:hover{text-underline-offset:3px;text-decoration:underline}.bk-author{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.bk-meter{max-width:100%;color:var(--steel);font-variant-numeric:tabular-nums;flex-wrap:wrap;justify-self:start;align-items:center;gap:4px 6px;margin-top:4px;font-size:12px;display:flex}.bk-meter:hover span:last-child{text-underline-offset:3px;text-decoration:underline}.bk-dots{gap:2px;display:inline-flex}.bk-dots i{background:#c7d5e3;border-radius:50%;width:5px;height:5px}.bk-dots i.on{background:var(--cobalt)}.bk-tag-client{color:#4d6b33;background:#bdd6a38c;border-radius:999px;justify-self:start;max-width:100%;margin-top:4px;padding:1px 8px;font-size:12px}.bk-empty{text-align:center;color:var(--muted);padding:48px 0 60px}.bk-block{padding-top:72px}.bk-sub{max-width:640px;color:var(--muted);margin-bottom:28px;font-size:17px;line-height:26px}.bk-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;display:grid}.bk-mcard{border:1px solid var(--line);background:var(--white);border-radius:20px;grid-template-columns:auto 1fr;align-items:center;gap:14px;padding:18px;transition:border-color .15s,transform .2s;display:grid}a.bk-mcard:hover{border-color:#b9c7d6;transform:translateY(-2px)}.bk-mcard b{font-size:16px;font-weight:600;display:block}.bk-mcard small{color:var(--muted);font-size:13px}.bk-soon{opacity:.6}.bk-stack{padding-right:14px;display:flex}.bk-stack img,.bk-stack span{background-position:50%;background-size:cover;border:1px solid #fff9;border-radius:2px 3px 3px 2px;width:34px;height:50px;margin-right:-14px;box-shadow:0 6px 12px -6px #171b2180}.bk-note{color:var(--muted);margin-top:16px;font-size:14px}.bk-how{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.bk-how>div{border:1px solid var(--line);background:var(--white);border-radius:20px;align-content:start;gap:8px;padding:24px;display:grid}.bk-ico{background:var(--blue);width:48px;height:48px;color:var(--steel);border-radius:14px;place-items:center;margin-bottom:12px;display:grid}.bk-ico-1{color:#9a5a1e;background:#ffe6cc}.bk-ico-2{color:#4d6b33;background:#e3eed8}.bk-ico svg{stroke-width:1.8px;width:24px;height:24px}.bk-how b{font-size:17px;font-weight:600;line-height:24px;display:block}.bk-how p{color:var(--muted);font-size:15px;line-height:24px}@media (max-width:860px){.bk-how{grid-template-columns:1fr}}.bk-path{counter-reset:step;gap:12px;margin:0;padding:0;list-style:none;display:grid}.bk-path li{border:1px solid var(--line);background:var(--white);counter-increment:step;border-radius:20px;grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:16px;padding:16px 18px;display:grid}.bk-path li:before{content:counter(step);background:var(--blue);width:36px;height:36px;color:var(--steel);border-radius:50%;place-items:center;font-weight:600;display:grid}.bk-path b{font-weight:600;display:block}.bk-path span{color:var(--muted);font-size:15px}.bk-mini{gap:6px;display:flex}.bk-mini a{background-position:50%;background-size:cover;border-radius:2px 3px 3px 2px;width:36px;height:54px;overflow:hidden;box-shadow:0 6px 12px -6px #171b2180}.bk-mini img,.bk-stack img{object-fit:cover}.bk-mini img{width:100%;height:100%}@media (max-width:640px){.bk-path li{grid-template-columns:36px minmax(0,1fr)}.bk-mini{grid-column:2}}.bk-foot{color:var(--muted);padding-block:72px 56px;font-size:14px}.bk-sheet{background:var(--white);width:min(480px,100%);max-width:100%;height:100%;max-height:100%;color:var(--ink);border:0;margin:0 0 0 auto;padding:0;overflow:hidden;box-shadow:-20px 0 60px #171b212e}.bk-sheet::backdrop{background:#171b2159}.bk-sheet[open]{animation:.25s bk-slide}@keyframes bk-slide{0%{opacity:.4;transform:translate(24px)}}.bk-sheet-in{flex-direction:column;height:100%;display:flex;position:relative}.bk-sheet-body{min-height:0;padding:32px max(32px, env(safe-area-inset-right,0px)) 32px 32px;flex:1;align-content:start;gap:28px;display:grid;overflow-y:auto}.bk-close{top:16px;right:max(16px, env(safe-area-inset-right,0px));z-index:1;background:var(--paper);width:36px;height:36px;color:var(--ink);border:0;border-radius:50%;place-items:center;padding:0;display:grid;position:absolute}.bk-close:hover{background:var(--line)}.bk-sheet-head{grid-template-columns:112px minmax(0,1fr);align-items:end;gap:20px;display:grid}.bk-sheet-head .bk-cover img,.bk-bp-side .bk-cover img,.bk-similar .bk-cover img{max-height:none}.bk-sheet-title{gap:8px;padding-right:32px;display:grid}.bk-sheet h2{letter-spacing:-.02em;margin:0;font-size:22px;font-weight:600;line-height:28px}.bk-tags{flex-wrap:wrap;gap:6px;display:flex}.bk-tag{background:var(--blue);color:var(--steel);border-radius:999px;padding:0 10px;font-size:12px;font-weight:500;line-height:22px}.bk-tag-green{color:#4d6b33;background:#bdd6a38c}.bk-by{color:var(--muted);font-size:15px;line-height:22px}.bk-page-link{width:max-content;color:var(--steel);font-size:14px;font-weight:500;line-height:20px}.bk-page-link:hover{text-underline-offset:3px;text-decoration:underline}.bk-stats{background:var(--paper);border-radius:16px}.bk-stats>summary{cursor:pointer;border-radius:16px;grid-template-columns:1fr 1fr;list-style:none;display:grid}.bk-stats>summary::-webkit-details-marker{display:none}.bk-stat{align-content:start;gap:4px;padding:16px 20px;display:grid}.bk-stat+.bk-stat{border-left:1px solid var(--line)}.bk-stat b{letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-size:28px;font-weight:600;line-height:32px}.bk-stat b small{color:var(--muted);font-size:16px;font-weight:500}.bk-stat>span{color:var(--muted);font-size:13px;line-height:18px}.bk-stat .bk-dots{margin-top:4px}.bk-stat .bk-dots i{width:6px;height:6px}.bk-which{align-items:center;gap:6px;margin-top:6px;font-size:13px;font-weight:500;line-height:18px;display:inline-flex;color:var(--cobalt)!important}.bk-which:after{content:"";border-bottom:1.6px solid;border-right:1.6px solid;width:6px;height:6px;transition:transform .16s;transform:translateY(-2px)rotate(45deg)}.bk-stats[open] .bk-which:after{transform:translateY(1px)rotate(-135deg)}.bk-src-list{border-top:1px solid var(--line);gap:8px;margin:0;padding:14px 20px 0;font-size:14px;line-height:20px;list-style:none;display:grid}.bk-src-list li{grid-template-columns:16px minmax(0,1fr);gap:8px;display:grid}.bk-src-list li.on>span:first-child{color:var(--cobalt);font-weight:600}.bk-src-list li.off{color:#98a2ae}.bk-src-note{color:var(--muted);padding:12px 20px 16px;font-size:12px;line-height:16px}.bk-vh{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.bk-txt h3,.bk-bp .bk-txt h2{letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin:0 0 8px;font-size:13px;font-weight:600;line-height:16px}.bk-txt p{font-size:16px;line-height:26px}.bk-langs{flex-wrap:wrap;gap:6px;display:flex}.bk-langs span{border:1px solid var(--line);border-radius:999px;padding:0 12px;font-size:13px;line-height:26px}.bk-langs span.off{color:#a3acb7;text-decoration:line-through}.bk-sheet-foot{padding:16px max(32px, env(safe-area-inset-right,0px)) max(20px, env(safe-area-inset-bottom,0px)) 32px;border-top:1px solid var(--line);background:var(--white)}.bk-acts{gap:8px;display:grid}.bk-buy{background:var(--ink);min-height:48px;color:var(--white);border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 24px;font-weight:500;display:flex}.bk-buy:hover{background:#2a313b}.bk-buy-note{text-align:center;color:var(--muted);margin-top:8px;font-size:13px;line-height:18px}.bk-send{border:1px solid var(--line);background:var(--white);border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 24px;font-weight:500;transition:border-color .15s;display:flex}.bk-send:hover{border-color:#c5cfda}.bk-copy-fb{color:var(--muted);gap:6px;font-size:13px;display:grid}.bk-copy-fb textarea{border:1px solid var(--line);font:inherit;color:var(--ink);resize:vertical;border-radius:12px;padding:10px 12px;font-size:14px;line-height:20px}.bk-similar{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.bk-similar>a,.bk-similar>button{text-align:left;background:0 0;border:0;align-content:start;gap:8px;min-width:0;padding:0;display:grid}.bk-similar .bk-cover{transition:transform .2s}.bk-similar>:hover .bk-cover{transform:translateY(-3px)}.bk-similar .bk-tcover{padding:8px 6px}.bk-similar .bk-tc-t{-webkit-line-clamp:5;font-size:10px}.bk-similar .bk-tc-a{font-size:8px}.bk-t-cap{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:13px;line-height:17px;display:-webkit-box;overflow:hidden}.bk-client-view .bk-pro{display:none}.bk-bp{padding-top:24px}.bk-bp .bk-crumbs{margin-bottom:24px}.bk-bp-grid{grid-template-columns:240px minmax(0,640px);grid-template-areas:"side head""side main";align-items:start;gap:28px 56px;display:grid}.bk-bp-head{grid-area:head;gap:12px;display:grid}.bk-bp-side{top:calc(var(--site-header-height) + 24px);grid-area:side;gap:16px;display:grid;position:sticky}.bk-bp-main{grid-area:main;gap:32px;display:grid}.books-page .bk-bp h1{letter-spacing:-.04em;max-width:none;margin:0;font-size:clamp(30px,4vw,44px);line-height:1.1}.bk-bp .bk-by{font-size:16px;line-height:24px}.bk-bp .bk-by a{color:var(--steel);text-underline-offset:3px;text-decoration:underline}.bk-bp-orig{color:var(--muted);font-size:14px;line-height:20px}.bk-shelf-links{gap:8px;display:grid}.bk-shelf-links a{border:1px solid var(--line);background:var(--white);border-radius:14px;justify-content:space-between;align-items:center;gap:16px;min-height:52px;padding:12px 16px;font-weight:500;display:flex}.bk-shelf-links a:hover{border-color:#c5cfda}.bk-shelf-links a span+span{color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums;font-size:14px;font-weight:400}.bk-start{border:1px solid var(--line);background:var(--white);border-radius:20px;gap:6px;max-width:760px;margin:28px 0 24px;padding:20px 24px;display:grid}.bk-start b{font-weight:600}.bk-start p{color:#2a313b;font-size:16px;line-height:26px}.bk-cta{border:1px solid var(--line);background:var(--white);border-radius:24px;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:16px 20px;margin-top:72px;padding:20px 24px;display:grid}.bk-cta p{color:#2a313b;font-size:16px;line-height:24px}.bk-cta b{color:var(--ink);font-weight:600}@media (max-width:760px){.bk-bp-grid{grid-template-columns:minmax(0,1fr);grid-template-areas:"head""side""main";row-gap:24px}.bk-bp-side{position:static}.bk-bp-side>.bk-cover{width:150px}}@media (max-width:640px){.books-page{--bk-cover-w:92px;--bk-shelf-h:150px}.bk-lede{font-size:17px;line-height:26px}.bk-shelf{column-gap:12px}.bk-title{font-size:13px;line-height:17px}.bk-tc-t{-webkit-line-clamp:5;font-size:12px}.bk-tc-a{font-size:9px}.bk-tcover{padding:10px 8px}.bk-rank{min-width:24px;height:24px;font-size:12px;top:-6px;left:-6px}.bk-dots i{width:4px;height:4px}.bk-sheet{border-radius:24px 24px 0 0;width:100%;height:auto;max-height:90dvh;margin:auto 0 0;box-shadow:0 -20px 60px #171b212e}.bk-sheet[open]{animation-name:bk-rise}.bk-sheet-in{height:auto;max-height:90dvh}.bk-sheet-in:before{content:"";background:var(--line);border-radius:2px;width:36px;height:4px;margin-left:-18px;position:absolute;top:8px;left:50%}.bk-sheet-body{gap:24px;padding:32px 20px 24px}.bk-sheet-head{grid-template-columns:88px minmax(0,1fr);gap:16px}.bk-sheet-title{padding-right:24px}.bk-sheet h2{font-size:20px;line-height:26px}.bk-stat{padding:14px 16px}.bk-sheet-foot{padding:12px 20px max(16px, env(safe-area-inset-bottom,0px))}.bk-cta{grid-template-columns:44px minmax(0,1fr);padding:20px}.bk-cta .button{grid-column:1/-1}}@keyframes bk-rise{0%{opacity:.4;transform:translateY(24px)}}@media (max-width:420px){.bk-similar{grid-template-columns:repeat(3,minmax(0,1fr))}.bk-similar>:nth-child(4){display:none}}@media (prefers-reduced-motion:reduce){.books-page *,.bk-sheet,.bk-sheet *{transition:none!important;animation:none!important}}