.bk-page{--bk-maxw:var(--maxw);--bk-gutter:var(--gutter);font-family:var(--v4-font-body);color:var(--v4-ink)}.bk-wrap{width:100%;max-width:var(--bk-maxw);margin:0 auto;padding:0 var(--bk-gutter);position:relative;z-index:2;box-sizing:border-box}.bk-section{padding:clamp(48px,6vw,84px) 0}.bk-page *,.bk-page :after,.bk-page :before{box-sizing:border-box}.bk-hero-col{display:flex;flex-direction:column;align-items:center;text-align:center;max-width:820px;margin:0 auto}.bk-hero-title{font-size:clamp(34px,4.4vw,60px);font-weight:800;line-height:1.08;margin:0 0 18px;text-wrap:balance}.bk-hero-sub,.bk-hero-title{font-family:var(--v4-font-display);color:var(--v4-peri-ink)}.bk-hero-sub{font-size:clamp(20px,2.4vw,32px);line-height:1.5;margin:0 0 36px;text-wrap:pretty}.bk-hero-visual{width:100%;max-width:540px;margin:0 auto 36px}.bk-hero-visual img{width:100%;height:auto;display:block;filter:drop-shadow(0 8px 28px rgba(39,66,192,.1))}.bk-hero-body{font-family:var(--v4-font-body);font-size:clamp(19px,2.2vw,30px);color:var(--v4-ink);line-height:1.6;margin:0 0 40px;text-wrap:pretty}.bk-ctas{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:center}.bk-intro{font-family:var(--v4-font-display);font-size:clamp(20px,2vw,26px);color:var(--v4-peri-ink);text-align:center;line-height:1.5;max-width:780px;margin:0 auto 56px;text-wrap:pretty}.bk-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:clamp(28px,5vw,64px);gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(24px,3.5vw,48px) 0}.bk-row-flip .bk-img-wrap{order:2}.bk-img-wrap{display:flex;align-items:center;justify-content:center}.bk-cover{width:100%;max-width:370px;height:auto;display:block;transition:transform .3s ease}.bk-cover:hover{transform:translateY(-8px) rotate(-1deg)}.bk-cover-blend{mix-blend-mode:multiply}.bk-cover-blend:hover{transform:translateY(-8px)}.bk-info{display:flex;flex-direction:column;gap:16px;align-items:flex-start}.bk-title{font-family:var(--v4-font-display);font-size:clamp(30px,3.6vw,48px);font-weight:800;line-height:1.1;color:var(--v4-peri-ink);margin:0}.bk-desc{font-family:var(--v4-font-body);font-size:clamp(19px,2vw,28px);color:var(--v4-ink);line-height:1.6;margin:0;text-wrap:pretty}.bk-meta{display:flex;flex-direction:column;gap:8px}.bk-meta-item{font-family:var(--v4-font-body);font-size:clamp(17px,1.7vw,24px);color:var(--v4-ink);display:flex;align-items:center;gap:10px}.bk-meta-item:before{content:"";display:inline-block;flex-shrink:0;width:20px;height:20px;background:url(/media/v4/books-meta-bullet.svg) 50%/contain no-repeat}.bk-featured-col{display:flex;flex-direction:column;align-items:center;text-align:center;max-width:780px;margin:0 auto}.bk-featured-title{font-family:var(--v4-font-display);font-size:clamp(34px,4.4vw,60px);font-weight:800;line-height:1.08;color:var(--v4-peri-ink);margin:0 0 36px;text-wrap:balance}.bk-featured-img{width:100%;max-width:370px;height:auto;margin:0 auto 40px;display:block;filter:drop-shadow(0 12px 36px rgba(39,66,192,.14));animation:bkFeatFloat 5s ease-in-out infinite}.bk-featured-img:hover{animation-play-state:paused}@keyframes bkFeatFloat{0%,to{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-14px) rotate(1deg)}}.bk-featured-desc{font-family:var(--v4-font-body);font-size:clamp(19px,2.2vw,30px);color:var(--v4-ink);line-height:1.65;margin:0 0 40px;text-wrap:pretty}.bk-companion-head{text-align:center;max-width:760px;margin:0 auto 48px}.bk-companion-head h2{font-size:clamp(30px,3.8vw,52px);font-weight:800;line-height:1.08;margin:0 0 16px}.bk-companion-head h2,.bk-companion-head p{font-family:var(--v4-font-display);color:var(--v4-peri-ink)}.bk-companion-head p{font-size:clamp(19px,1.9vw,24px);line-height:1.5;margin:0}.bk-companion-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:48px;gap:48px;align-items:start}.bk-companion-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:20px}.bk-companion-img-wrap{width:100%;min-height:320px;display:flex;align-items:center;justify-content:center}.bk-companion-img{width:100%;height:auto;display:block;margin:0 auto;transition:transform .3s ease}.bk-companion-img:hover{transform:translateY(-8px)}.bk-companion-img-box,.bk-companion-img-sm{max-width:450px}.bk-companion-title{font-family:var(--v4-font-display);font-size:clamp(26px,2.7vw,36px);font-weight:800;line-height:1.1;color:var(--v4-peri-ink);margin:0}.bk-companion-desc{font-family:var(--v4-font-body);font-size:clamp(19px,2vw,26px);color:var(--v4-ink);line-height:1.6;margin:0;max-width:380px;text-wrap:pretty}@media (max-width:820px){.bk-row{grid-template-columns:1fr;gap:28px}.bk-row-flip .bk-img-wrap{order:0}.bk-img-wrap{justify-content:center}.bk-cover{max-width:260px}.bk-info{align-items:center;text-align:center}.bk-companion-grid{grid-template-columns:1fr;gap:48px}.bk-companion-img-wrap{min-height:240px}}