.bk-hero{grid-template-columns:1fr 1fr;align-items:center;gap:clamp(2rem,5vw,5rem);min-height:100svh;padding-top:clamp(104px,14vh,150px);display:grid}.bk-title{max-width:16ch;margin-top:1rem;font-size:clamp(2rem,3.6vw,3.4rem)}.bk-lead{max-width:40ch;color:var(--muted);margin-top:1.5rem;font-size:clamp(1.05rem,1.4vw,1.2rem);line-height:1.5}.bk-cta{justify-items:start;gap:1rem;margin-top:2.25rem;display:grid}.bk-format{text-transform:none;letter-spacing:0;font-size:.78rem}.bk-buy{background:var(--brass);color:var(--bg);border-color:var(--brass);transition:transform .35s var(--ease-out),background .35s var(--ease-out),box-shadow .35s var(--ease-out);gap:1rem;font-weight:500}.bk-buy:hover{background:#d6b87e;box-shadow:0 10px 30px #c9a96e40}.bk-buy:active{transform:translateY(1px)}.bk-buy>span:first-child{font-weight:700}.bk-buy-price{border-left:1px solid #0a0a0b40;align-items:center;padding-left:1rem;font-size:.95em;display:inline-flex}.bk-buy-big{border-radius:999px;padding:1.2rem 2rem;font-size:1.15rem}.bk-cover{perspective:1600px;justify-self:center;width:min(100%,440px);margin:0;position:relative}.bk-cover:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(closest-side,#c9a96e24,#0000 72%);position:absolute;inset:-25% -35%}.bk-cover:after{content:"";filter:blur(24px);z-index:-1;background:#000000bf;border-radius:50%;height:12%;position:absolute;bottom:-7%;left:10%;right:0}.bk-cover img{transform-origin:60%;width:100%;height:auto;transition:transform .8s var(--ease-out);border-radius:4px 10px 10px 4px;display:block;transform:rotateY(-14deg)rotateX(2deg);box-shadow:0 50px 100px #000000a6,0 0 0 1px #ffffff14,inset 0 0 #0000}.bk-cover picture{display:block;position:relative}.bk-cover picture:after{content:"";transform-origin:60%;pointer-events:none;background:linear-gradient(90deg,#ffffff38,#fff0);border-radius:4px 0 0 4px;width:3%;position:absolute;top:0;bottom:0;left:0;transform:rotateY(-14deg)rotateX(2deg)}.bk-hero:hover .bk-cover img{transform:rotateY(-9deg)rotateX(1deg)}@media (prefers-reduced-motion:reduce){.bk-cover img{transition:none}}.bk-section{padding-block:clamp(56px,9vh,112px)}.bk-body{max-width:62ch;color:var(--muted);margin-top:1.5rem;font-size:1.0625rem;line-height:1.6}.bk-part-list{margin-top:3rem;list-style:none}.bk-part{grid-template-columns:minmax(120px,.7fr) 1.6fr 1.2fr;align-items:start;gap:clamp(1.5rem,4vw,4rem);padding:2.25rem 0;display:grid}.bk-part-meta{align-content:start;gap:.4rem;display:grid}.bk-part-body h3{font-size:clamp(1.5rem,2.4vw,2.2rem);line-height:1.12}.bk-part-body p{max-width:52ch;color:var(--muted);margin-top:1rem;line-height:1.6}.bk-part-chapters{color:var(--muted);gap:.55rem;padding-top:.35rem;font-size:.95rem;line-height:1.4;list-style:none;display:grid}.bk-part-chapters li{padding-left:1.1rem;position:relative}.bk-part-chapters li:before{content:"";background:var(--brass);border-radius:50%;width:5px;height:5px;position:absolute;top:.62em;left:0}.bk-appendix{max-width:62ch;margin-top:2rem;line-height:1.6}.bk-pages .container{margin-bottom:2.5rem}.bk-strip{scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding-inline:clamp(20px,5vw,72px);scrollbar-width:thin;scrollbar-color:#ffffff24 transparent;gap:clamp(1rem,2vw,1.75rem);padding-bottom:1rem;list-style:none;display:flex;overflow-x:auto}@media (min-width:1425px){.bk-strip{padding-inline:calc(50% - 640px)}}.bk-strip li{scroll-snap-align:start;flex:0 0 clamp(260px,26vw,380px)}.bk-strip figure{margin:0}.bk-strip img{width:100%;height:auto;transition:transform .5s var(--ease-out);background:#fff;border-radius:4px;display:block;box-shadow:0 18px 44px #00000080,0 0 0 1px #ffffff0f}.bk-strip li:hover img{transform:translateY(-4px)}.bk-strip figcaption{text-transform:none;letter-spacing:0;gap:.2rem;margin-top:.9rem;font-size:.78rem;line-height:1.4;display:grid}.bk-strip figcaption .mono-num{color:var(--brass);text-transform:uppercase;letter-spacing:.04em;font-size:.72rem}.bk-toolkit{grid-template-columns:1fr 1.15fr;align-items:center;gap:clamp(2rem,6vw,6rem);display:grid}.bk-toolkit-image{justify-self:center;width:min(100%,440px);margin:0;transform:rotate(-1.5deg)}.bk-toolkit-image img{border-radius:4px;width:100%;height:auto;display:block;box-shadow:0 30px 70px #0009,0 0 0 1px #ffffff0f}.bk-counts{grid-template-columns:repeat(3,auto);justify-content:start;gap:clamp(1.5rem,4vw,3.5rem);margin-top:2.5rem;display:grid}.bk-counts div{gap:.35rem;display:grid}.bk-counts dd{color:var(--text);font-size:clamp(2rem,3.4vw,3rem);line-height:1}.bk-evidence-head{max-width:64ch}.bk-tags{grid-template-columns:1fr 1fr;gap:2.5rem clamp(2rem,5vw,5rem);margin-top:3rem;display:grid}.bk-tag{border-top:1px solid var(--hairline);gap:.6rem;padding-top:1.1rem;display:grid}.bk-tag dd{color:var(--muted);max-width:40ch;line-height:1.55}.bk-offer{border:1px solid var(--hairline);background:linear-gradient(#141416eb,#0e0e10eb);border-radius:18px;grid-template-columns:1.2fr 1fr;gap:clamp(2rem,5vw,5rem);padding:clamp(1.75rem,4vw,3.5rem);display:grid}.bk-included{color:var(--muted);gap:.9rem;margin-top:2rem;line-height:1.5;list-style:none;display:grid}.bk-included li{padding-left:1.2rem;position:relative}.bk-included li:before{content:"";background:var(--brass);border-radius:50%;width:6px;height:6px;position:absolute;top:.62em;left:0}.bk-offer-buy{align-content:start;gap:1rem;padding-top:.4rem;display:grid}.bk-offer-price{font-size:clamp(3rem,5vw,4.5rem);line-height:1}.bk-offer-buy .btn{justify-self:start;margin-top:.5rem}.bk-terms{gap:.75rem;margin-top:1.25rem;font-size:.9rem;line-height:1.5;list-style:none;display:grid}.bk .guide-faq{padding-block:clamp(56px,9vh,112px)}.bk .book{padding-top:clamp(64px,10vh,120px)}@media (max-width:900px){.bk-hero{grid-template-columns:1fr;align-content:start;align-items:start;gap:1.25rem;min-height:0;padding-top:clamp(88px,12vh,112px)}.bk-cover{perspective:none;order:-1;justify-self:start;width:min(44%,190px)}.bk-cover:before{inset:-20% -40%}.bk-cover:after{height:10%;bottom:-6%;left:8%;right:8%}.bk-cover picture:after{display:none}.bk-cover img{border-radius:4px;transform:none;box-shadow:0 20px 44px #0009,0 0 0 1px #ffffff14}.bk-hero:hover .bk-cover img{transform:none}.bk-title{max-width:none;margin-top:.5rem;font-size:clamp(1.8rem,7vw,2.5rem)}.bk-lead{max-width:none;margin-top:.9rem;font-size:.95rem;line-height:1.45}.bk-cta{justify-items:stretch;gap:.6rem;margin-top:1.1rem}.bk-cta .bk-buy{justify-content:center;width:100%;padding:1.1rem 1.5rem;font-size:1.1rem}.bk-format{text-align:center}.bk-part{grid-template-columns:1fr;gap:1rem}.bk-part-meta{grid-auto-flow:column;justify-content:start;gap:1rem}.bk-toolkit{grid-template-columns:1fr;gap:2.5rem}.bk-toolkit-image{justify-self:start;width:min(90%,360px);transform:none}.bk-tags{grid-template-columns:1fr;gap:1.75rem}.bk-offer{grid-template-columns:1fr;gap:2rem}}@media (max-width:599.98px){.bk-section{padding-block:clamp(40px,7vh,64px)}.bk-strip{padding-inline:16px}.bk-strip li{flex-basis:78vw}.bk-counts{grid-template-columns:repeat(3,auto);gap:1.25rem}.bk-counts dd{font-size:1.9rem}.bk-offer{padding:1.5rem}.bk-offer-price{font-size:2.75rem}.bk-offer-buy .btn{justify-content:center;width:100%}}