.book-module__nc7tva__page{--book-ink:var(--bcai-bg);--book-paper:var(--bcai-paper);--book-signal:var(--bcai-accent);color:var(--bcai-text);background:var(--book-ink)}.book-module__nc7tva__page a,.book-module__nc7tva__page button{transition:color .18s,background .18s,border-color .18s}.book-module__nc7tva__page a:focus-visible,.book-module__nc7tva__page button:focus-visible{outline:3px solid var(--book-signal);outline-offset:6px}.book-module__nc7tva__page section[id]{scroll-margin-top:7rem}.book-module__nc7tva__container{width:min(100% - 3rem,76rem);margin-inline:auto}.book-module__nc7tva__hero{border-bottom:1px solid var(--bcai-border-strong);padding-top:2rem;overflow:hidden}.book-module__nc7tva__heroGrid{grid-template-columns:1.2fr 1fr;align-items:center;gap:5rem;padding:4.5rem 0 6rem;display:grid}.book-module__nc7tva__eyebrow{font:500 .7rem/1.6 var(--font-geist-mono), monospace;text-transform:uppercase;letter-spacing:.15em;color:var(--book-signal);margin:0 0 1.3rem}.book-module__nc7tva__hero h1{letter-spacing:-.055em;margin:0;font-size:clamp(4.5rem,7.8vw,7.5rem);font-weight:500;line-height:.94}.book-module__nc7tva__hero h1 em{color:var(--book-signal);font-weight:400}.book-module__nc7tva__subtitle{letter-spacing:-.025em;margin:1.6rem 0 0;font-size:clamp(1.4rem,2.5vw,2rem)}.book-module__nc7tva__lede{max-width:32rem;color:var(--bcai-text-muted);margin:1.4rem 0 0;font-size:1.08rem;line-height:1.7}.book-module__nc7tva__byline{color:var(--bcai-text-subtle);margin:1.6rem 0 0;font-size:.84rem;line-height:1.75}.book-module__nc7tva__byline a{color:var(--bcai-text);text-decoration:underline}.book-module__nc7tva__actions{flex-wrap:wrap;align-items:center;gap:1.4rem;margin-top:2rem;display:flex}.book-module__nc7tva__primary{background:var(--book-signal);color:var(--book-ink);justify-content:space-between;align-items:center;gap:2rem;padding:1rem 1.3rem;font-size:.9rem;font-weight:650;display:inline-flex}.book-module__nc7tva__primary:hover{background:var(--bcai-accent-hover)}.book-module__nc7tva__textLink{text-decoration:underline;-webkit-text-decoration-color:var(--bcai-border-strong);text-decoration-color:var(--bcai-border-strong);text-underline-offset:.3em;align-items:center;gap:.8rem;font-size:.9rem;line-height:1.5;display:inline-flex}.book-module__nc7tva__textLink:hover,.book-module__nc7tva__byline a:hover{color:var(--book-signal)}.book-module__nc7tva__coverFigure{background:var(--book-paper);color:var(--book-ink);box-shadow:18px 24px 0 var(--bcai-surface), 0 20px 70px #0006;margin:0;padding:.7rem;transform:rotate(3deg)}.book-module__nc7tva__coverLink{display:block}.book-module__nc7tva__coverFigure img{width:100%;height:auto}.book-module__nc7tva__coverFigure figcaption{font:.55rem/1.6 var(--font-geist-mono), monospace;text-transform:uppercase;letter-spacing:.03em;flex-wrap:wrap;justify-content:space-between;gap:.5rem;margin-top:.8rem;display:flex}.book-module__nc7tva__coverFigure a:focus-visible{outline-color:var(--book-ink)}.book-module__nc7tva__statsBand{background:var(--book-signal);color:var(--book-ink)}.book-module__nc7tva__stats{grid-template-columns:repeat(4,1fr);width:min(100% - 3rem,76rem);margin:auto;padding:1.8rem 0;display:grid}.book-module__nc7tva__stats>div{border-left:1px solid;padding:.2rem 1.5rem}.book-module__nc7tva__stats>div:first-child{border:0;padding-left:0}.book-module__nc7tva__stats dd{font:500 clamp(2.2rem, 4vw, 3.5rem)/1 var(--font-geist-mono), monospace;letter-spacing:-.07em;margin:0}.book-module__nc7tva__stats dt{font:.65rem/1.5 var(--font-geist-mono), monospace;text-transform:uppercase;letter-spacing:.08em;margin-top:.8rem}.book-module__nc7tva__section{border-bottom:1px solid var(--bcai-border-strong);padding:5.5rem 0}.book-module__nc7tva__section h2{letter-spacing:-.035em;margin:0;font-size:clamp(2.6rem,4.5vw,4.3rem);font-weight:500;line-height:1.07}.book-module__nc7tva__introGrid{grid-template-columns:1fr 1fr;gap:5rem;display:grid}.book-module__nc7tva__prose{color:var(--bcai-text-muted);font-size:1rem;line-height:1.8}.book-module__nc7tva__prose>p{margin:0 0 1.2rem}.book-module__nc7tva__prose strong,.book-module__nc7tva__prose h2{color:var(--bcai-text)}.book-module__nc7tva__prose h2{margin-bottom:1.6rem}.book-module__nc7tva__prose .book-module__nc7tva__textLink{color:var(--bcai-text)}.book-module__nc7tva__sectionHeading{justify-content:space-between;align-items:end;gap:2rem;display:flex}.book-module__nc7tva__sectionIntro{color:var(--bcai-text-muted);max-width:41rem;margin:1.4rem 0 2.8rem;line-height:1.7}.book-module__nc7tva__picker{border-top:1px solid var(--bcai-border-strong);grid-template-columns:17rem minmax(0,1fr);display:grid}.book-module__nc7tva__choices{flex-direction:column;padding-top:1.2rem;display:flex}.book-module__nc7tva__choices button{cursor:pointer;text-align:left;border-bottom:1px solid var(--bcai-border);align-items:center;gap:1rem;min-height:4rem;padding:1rem;font-size:.9rem;display:flex}.book-module__nc7tva__choices button>span:last-child{margin-left:auto}.book-module__nc7tva__choiceNumber{color:var(--bcai-text-subtle);font:.65rem var(--font-geist-mono), monospace}.book-module__nc7tva__choices button[aria-pressed=true]{background:var(--book-signal);color:var(--book-ink)}.book-module__nc7tva__choices button[aria-pressed=true] .book-module__nc7tva__choiceNumber{color:var(--book-ink)}.book-module__nc7tva__choices button:hover:not([aria-pressed=true]){background:var(--bcai-surface-hover)}.book-module__nc7tva__pathway{min-height:29rem;padding:2rem 0 0 3rem}.book-module__nc7tva__pathway h3{letter-spacing:-.03em;margin:0;font-size:1.65rem;font-weight:550;line-height:1.25}.book-module__nc7tva__pathway>p{color:var(--bcai-text-muted);max-width:43rem;margin:1rem 0 1.8rem;font-size:.9rem;line-height:1.7}.book-module__nc7tva__chapters{margin:0;padding:0;list-style:none}.book-module__nc7tva__chapters li{border-top:1px solid var(--bcai-border-strong)}.book-module__nc7tva__chapters a{grid-template-columns:2.2rem 1fr 1rem;align-items:start;gap:1rem;padding:1.1rem 0;display:grid}.book-module__nc7tva__chapters a:hover{color:var(--book-signal)}.book-module__nc7tva__chapterNumber{font:.9rem/1.5 var(--font-geist-mono), monospace;color:var(--book-signal)}.book-module__nc7tva__chapters strong{font-size:.96rem;font-weight:550;display:block}.book-module__nc7tva__chapters small{color:var(--bcai-text-subtle);margin-top:.4rem;font-size:.8rem;line-height:1.5;display:block}.book-module__nc7tva__labSection{background:var(--book-paper);color:var(--book-ink)}.book-module__nc7tva__labSection .book-module__nc7tva__eyebrow,.book-module__nc7tva__labSection .book-module__nc7tva__sectionIntro{color:var(--bcai-text-muted-light)}.book-module__nc7tva__labList{border-top:1px solid var(--bcai-text-subtle-light);grid-template-columns:repeat(3,1fr);display:grid}.book-module__nc7tva__lab{border-left:1px solid var(--bcai-text-subtle-light);flex-direction:column;align-items:start;padding:2rem 2rem 0;display:flex}.book-module__nc7tva__lab:first-child{border:0;padding-left:0}.book-module__nc7tva__lab:last-child{padding-right:0}.book-module__nc7tva__labNumber{font:.75rem var(--font-geist-mono), monospace;margin-bottom:2rem}.book-module__nc7tva__lab h3{letter-spacing:-.04em;max-width:15rem;margin:0 0 1rem;font-size:1.7rem;font-weight:550;line-height:1.2}.book-module__nc7tva__lab p{color:var(--bcai-text-muted-light);margin:0 0 1.8rem;font-size:.9rem;line-height:1.7}.book-module__nc7tva__labAction{text-underline-offset:.3em;margin-top:auto;font-size:.8rem;text-decoration:underline}.book-module__nc7tva__lab:hover{background:var(--bcai-border)}.book-module__nc7tva__lab:focus-visible{outline-color:var(--book-ink)!important}.book-module__nc7tva__hardwareGrid{grid-template-columns:1fr 1.2fr;align-items:center;gap:5rem;display:grid}.book-module__nc7tva__memoryMark{color:var(--book-signal);flex-direction:column;display:flex}.book-module__nc7tva__memoryMark>span:first-child{font:500 clamp(8rem, 23vw, 22rem)/.9 var(--font-geist-mono), monospace;letter-spacing:-.12em;margin-left:-.06em}.book-module__nc7tva__memoryMark>span:last-child{font:.65rem var(--font-geist-mono), monospace;letter-spacing:.2em;margin-top:1.7rem}.book-module__nc7tva__authorSection{background:var(--bcai-bg-elevated)}.book-module__nc7tva__authorSection h2{font-size:clamp(2.4rem,3.5vw,3.7rem)}.book-module__nc7tva__authorSection h2 em{color:var(--bcai-text-muted);font-weight:400}.book-module__nc7tva__authorCredit{color:var(--bcai-text-subtle);font-size:.8rem}.book-module__nc7tva__downloads{border-top:1px solid var(--bcai-border-strong);border-bottom:1px solid var(--bcai-border-strong);grid-template-columns:1fr 1fr;margin-top:3rem;display:grid}.book-module__nc7tva__downloads a{padding:2rem 2rem 2rem 0;display:block}.book-module__nc7tva__downloads a+a{border-left:1px solid var(--bcai-border-strong);padding-left:2rem}.book-module__nc7tva__downloads a>span{font:.65rem var(--font-geist-mono), monospace;text-transform:uppercase;letter-spacing:.1em;color:var(--bcai-text-subtle)}.book-module__nc7tva__downloads strong{letter-spacing:-.03em;justify-content:space-between;gap:1rem;margin:1.4rem 0 1rem;font-size:1.5rem;font-weight:500;display:flex}.book-module__nc7tva__downloads p{color:var(--bcai-text-muted);max-width:29rem;margin:0;font-size:.9rem;line-height:1.7}.book-module__nc7tva__downloads a:hover strong{color:var(--book-signal)}.book-module__nc7tva__course{justify-content:space-between;align-items:center;gap:3rem;padding:2.5rem 0;display:flex}.book-module__nc7tva__course .book-module__nc7tva__eyebrow{margin-bottom:.7rem}.book-module__nc7tva__course h3{letter-spacing:-.03em;margin:0 0 .8rem;font-size:1.5rem}.book-module__nc7tva__course p:last-child{max-width:36rem;color:var(--bcai-text-muted);margin:0;font-size:.9rem;line-height:1.7}.book-module__nc7tva__sourceNote{border-top:1px solid var(--bcai-border);color:var(--bcai-text-subtle);padding-top:1.5rem;font-size:.7rem;line-height:1.7}@media (prefers-reduced-motion:no-preference){.book-module__nc7tva__coverFigure{animation:.7s ease-out both book-module__nc7tva__settle}@keyframes book-module__nc7tva__settle{0%{opacity:0;transform:translateY(1.5rem)rotate(0)}to{opacity:1;transform:translateY(0)rotate(3deg)}}}@media (max-width:1023px){.book-module__nc7tva__heroGrid{gap:3rem}.book-module__nc7tva__hero h1{font-size:clamp(4rem,8vw,6rem)}.book-module__nc7tva__introGrid,.book-module__nc7tva__hardwareGrid{gap:3rem}.book-module__nc7tva__picker{grid-template-columns:14rem minmax(0,1fr)}.book-module__nc7tva__pathway{padding-left:2rem}}@media (max-width:767px){.book-module__nc7tva__heroGrid{grid-template-columns:1fr;gap:3.5rem;padding:3rem 0 4rem}.book-module__nc7tva__hero h1{font-size:clamp(4.2rem,14vw,6.7rem)}.book-module__nc7tva__coverFigure{justify-self:center;width:min(100% - 1.5rem,26rem)}.book-module__nc7tva__stats{grid-template-columns:repeat(2,1fr);row-gap:1.8rem}.book-module__nc7tva__stats>div:nth-child(3){border-left:0;padding-left:0}.book-module__nc7tva__section{padding:3.5rem 0}.book-module__nc7tva__introGrid,.book-module__nc7tva__hardwareGrid{grid-template-columns:1fr;gap:2rem}.book-module__nc7tva__sectionHeading{display:block}.book-module__nc7tva__sectionHeading>a{margin-top:1.5rem}.book-module__nc7tva__picker{grid-template-columns:1fr}.book-module__nc7tva__choices{flex-flow:wrap;gap:.5rem;padding-bottom:1.5rem}.book-module__nc7tva__choices button{border:1px solid var(--bcai-border-strong);min-height:2.8rem;padding:.7rem .85rem;font-size:.8rem}.book-module__nc7tva__choiceNumber,.book-module__nc7tva__choices button>span:last-child{display:none}.book-module__nc7tva__pathway{min-height:29rem;padding:1rem 0 0}.book-module__nc7tva__labList{grid-template-columns:1fr}.book-module__nc7tva__lab,.book-module__nc7tva__lab:first-child,.book-module__nc7tva__lab:last-child{border-left:0;border-bottom:1px solid var(--bcai-text-subtle-light);padding:1.8rem 0}.book-module__nc7tva__labNumber{margin-bottom:1rem}.book-module__nc7tva__lab h3{max-width:none}.book-module__nc7tva__lab p{margin-bottom:1rem}.book-module__nc7tva__memoryMark>span:first-child{font-size:10rem}.book-module__nc7tva__memoryMark>span:last-child{margin-top:1rem}.book-module__nc7tva__downloads{grid-template-columns:1fr}.book-module__nc7tva__downloads a,.book-module__nc7tva__downloads a+a{border-left:0;padding:1.8rem 0}.book-module__nc7tva__downloads a+a{border-top:1px solid var(--bcai-border-strong)}.book-module__nc7tva__course{display:block}.book-module__nc7tva__course>a{margin-top:1.5rem}}