@font-face{font-family:Spectral;src:url(/fonts/spectral-regular.ttf)format("truetype");font-style:normal;font-weight:400;font-display:swap}@font-face{font-family:Spectral;src:url(/fonts/spectral-italic.ttf)format("truetype");font-style:italic;font-weight:400;font-display:swap}@font-face{font-family:"Source Sans 3";src:url(/fonts/source-sans-3.ttf)format("truetype");font-style:normal;font-weight:200 900;font-display:swap}:root{--mist:#edf2f7;--mist-deep:#dfe8f2;--paper:#fff;--ink:#142238;--muted:#526680;--line:#cad6e4;--cobalt:#2b58db;--cobalt-dark:#1d43b6;--violet:#7254a3;--wood-top:#8f6747;--wood-front:#65452f;--wood-dark:#38271e;--display:"Spectral", Georgia, serif;--sans:"Source Sans 3", system-ui, sans-serif;--shadow-soft:0 30px 70px #192e4d24;--shadow-book:20px 26px 38px #0f1a2c40;--radius:5px}*,:before,:after{box-sizing:border-box}html{color:var(--ink);background:var(--mist);font-family:var(--sans);scroll-behavior:smooth;text-rendering:optimizelegibility}body{min-width:320px;margin:0;overflow-x:hidden}body.guide-viewer-page{background:#eaf0f7}img{max-width:100%;display:block}a{color:inherit;text-underline-offset:.18em}button,input,select{font:inherit}button,select{color:inherit}.shell{width:min(100% - 48px,1400px);margin-inline:auto}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:1000;background:var(--ink);color:#fff;padding:12px 16px;position:fixed;top:12px;left:12px;transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}:focus-visible{outline-offset:4px;outline:3px solid #ffbf47}.site-header{z-index:100;border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-height:96px;display:flex;position:relative}.wordmark{color:var(--ink);letter-spacing:-.045em;align-items:center;gap:13px;font-size:clamp(1.45rem,2vw,2rem);font-weight:750;text-decoration:none;display:inline-flex}.wordmark-icon{flex:none;width:42px;height:37px}.footer-brand{align-items:center;gap:8px;display:inline-flex}.footer-brand img{object-fit:contain;width:30px;height:27px}.brand-dot,.title-dot{color:var(--cobalt)}.primary-nav{align-items:center;gap:clamp(22px,4vw,56px);display:flex}.primary-nav a{font-size:1.06rem;text-decoration:none}.primary-nav a[aria-current=page]{color:var(--cobalt)}.nav-button{border:1px solid var(--line);border-radius:var(--radius);padding:16px 24px;font-weight:650;transition:background .2s,color .2s,border-color .2s}.nav-button:hover{color:#fff;background:var(--ink);border-color:var(--ink)}.eyebrow{color:var(--muted);letter-spacing:.19em;text-transform:uppercase;margin:0 0 18px;font-size:.78rem;font-weight:750}h1,h2,h3,.chapter-title{font-family:var(--display);letter-spacing:-.035em;font-weight:400}h1{margin:0;font-size:clamp(3.6rem,7.2vw,7.8rem);line-height:.92}h2{font-size:clamp(2.6rem,5vw,5rem);line-height:.98}h3{font-size:1.75rem;line-height:1.08}em{color:var(--cobalt);font-weight:400}.button{border-radius:var(--radius);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;min-height:54px;padding:14px 25px;font-weight:700;text-decoration:none;display:inline-flex}.button-primary{background:var(--cobalt);color:#fff}.button-primary:hover{background:var(--cobalt-dark)}.button-secondary{border-color:var(--line);background:0 0}.button-secondary:hover{border-color:var(--ink)}.text-link{font-weight:680;text-decoration:none}.text-link:hover{color:var(--cobalt)}.hero-track{--intro-opacity:1;--chapter-opacity:0;--shelf-opacity:0;--book-bottom-opacity:1;--book-shadow-x:17px;--book-shadow-y:18px;--book-shadow-blur:14px;--book-shadow-alpha:.24;background:var(--mist);height:300svh;position:relative}.hero-pin{isolation:isolate;height:100svh;min-height:660px;position:sticky;top:0;overflow:hidden}.hero-copy{z-index:12;opacity:var(--intro-opacity);pointer-events:var(--intro-pointer,auto);position:absolute;top:clamp(120px,18vh,190px);left:50%;transform:translate(-50%)}.hero-copy h1{max-width:750px}.hero-intro{color:var(--muted);margin:28px 0 32px;font-size:1.2rem;line-height:1.55}.chapter-copy{z-index:10;text-align:center;width:min(90%,760px);opacity:var(--chapter-opacity);position:absolute;top:clamp(110px,14vh,160px);left:50%;transform:translate(-50%)}.chapter-title{margin:0;font-size:clamp(3rem,5.7vw,6rem);line-height:.95}.book-scene{perspective:1650px;perspective-origin:50% 48%;transform-style:preserve-3d;position:absolute;inset:0}.scene-orbit{aspect-ratio:4;border:1px solid #49648924;border-radius:50%;width:min(94vw,1500px);position:absolute;bottom:18%;left:50%;transform:translate(-50%)rotateX(67deg)}.scene-book{--book-height:clamp(190px, 22.4vw, 352px);--book-depth:clamp(20px, 2.05vw, 32px);z-index:5;bottom:calc(14% + 66px);left:var(--slot-center);width:calc(var(--book-height) * var(--book-ratio));height:var(--book-height);margin-left:calc(var(--book-height) * var(--book-ratio) / -2);transform-style:preserve-3d;transform-origin:50% 100%;will-change:transform;position:absolute}.book-scene[data-book-count="5"] .scene-book,.book-scene[data-book-count="6"] .scene-book{--book-height:clamp(175px, 18vw, 300px)}.scene-book-1{transform:translate3d(42vw,13vh,200px)rotateX(-5deg)rotateY(46deg)rotate(-7deg)}.scene-book-2{transform:translate3d(25vw,-5vh,320px)rotateX(3deg)rotateY(-32deg)rotate(3deg)}.scene-book-3{transform:translate3d(8vw,10vh,150px)rotateX(-3deg)rotateY(30deg)rotate(6deg)}.scene-book-4{transform:translate3d(0,-3vh,240px)rotateX(4deg)rotateY(-44deg)rotate(-4deg)}.scene-book-5{transform:translate3d(-14vw,8vh,180px)rotateX(-2deg)rotateY(36deg)rotate(-4deg)}.scene-book-6{transform:translate3d(-30vw,-4vh,280px)rotateX(3deg)rotateY(-38deg)rotate(5deg)}.scene-book-solid{transform-style:preserve-3d;filter:drop-shadow(var(--book-shadow-x) var(--book-shadow-y) var(--book-shadow-blur) rgba(20, 34, 56, var(--book-shadow-alpha)));position:absolute;inset:0}.scene-cover,.scene-back,.scene-pages,.scene-spine,.scene-page-top,.scene-page-bottom{backface-visibility:hidden;position:absolute}.scene-cover{transform:translateZ(calc(var(--book-depth) / 2));background:#fff;border-radius:2px 3px 3px 2px;inset:0;overflow:hidden;box-shadow:inset 1px 0 #ffffff61,inset -2px 0 #08122129}.scene-cover:after{content:"";pointer-events:none;background:linear-gradient(108deg,#fff3,#0000 18% 72%,#07111f24);position:absolute;inset:0}.scene-cover img{object-fit:fill;width:100%;height:100%}.scene-back{transform:rotateY(180deg) translateZ(calc(var(--book-depth) / 2));background:linear-gradient(135deg,#172439,#080f1c 72%);border-radius:2px;inset:0;box-shadow:inset 0 0 0 1px #ffffff14}.scene-pages,.scene-spine{width:var(--book-depth);height:100%;margin-left:calc(var(--book-depth) / -2);top:0;left:50%}.scene-pages{transform:rotateY(90deg) translateZ(calc(var(--book-height) * var(--book-ratio) / 2));background:repeating-linear-gradient(90deg,#fffdf7 0 2px,#d6ccbe 2px 3px,#f4eee3 3px 5px);box-shadow:inset 0 0 10px #49372338,inset 2px 0 #ffffffb8}.scene-spine{color:#ffffffe6;transform:rotateY(-90deg) translateZ(calc(var(--book-height) * var(--book-ratio) / 2));background:linear-gradient(90deg,#030811,#2a3a50 18%,#111d2f 48%,#060d19 100%);place-items:center;display:grid;overflow:hidden;box-shadow:inset -2px 0 #ffffff24,inset 3px 0 #0000004d,0 0 0 1px #ffffff17}.scene-spine span{letter-spacing:.04em;text-overflow:ellipsis;white-space:nowrap;writing-mode:vertical-rl;max-height:calc(100% - 18px);font-size:clamp(6px,.65vw,10px);font-weight:650;line-height:1;display:block;overflow:hidden;transform:rotate(180deg)}.scene-page-top,.scene-page-bottom{width:100%;height:var(--book-depth);margin-top:calc(var(--book-depth) / -2);background:repeating-linear-gradient(0deg,#f8f3e9 0 2px,#d9d1c4 2px 3px);top:50%;left:0}.scene-page-top{transform:rotateX(90deg) translateZ(calc(var(--book-height) / 2))}.scene-page-bottom{transform:rotateX(-90deg) translateZ(calc(var(--book-height) / 2));opacity:var(--book-bottom-opacity);background:#d1c8b9}.gallery-shelf{z-index:3;height:70px;opacity:var(--shelf-opacity);transform:translateY(var(--shelf-y,34px));transform-style:preserve-3d;position:absolute;bottom:14%;left:2%;right:2%}.shelf-top,.shelf-front,.shelf-rear-edge,.shelf-left-end,.shelf-right-end,.shelf-shadow,.shelf-underside,.shelf-book-shadow{pointer-events:none;display:block;position:absolute}.shelf-top{z-index:2;clip-path:polygon(4.2% 0,95.8% 0,100% 100%,0 100%);background-image:linear-gradient(101deg,#ffdbb42e,#0000 28%,#ffe5c621 55%,#2c160b38),url(/assets/shelf-walnut.webp);background-position:50%,50% 43%;background-size:100% 100%,100%;height:45px;top:3px;left:1.7%;right:1.7%;overflow:hidden;box-shadow:inset 0 3px 2px #fff1da4d,inset 0 -5px 7px #361d1052}.shelf-top:before{content:"";opacity:.62;mix-blend-mode:soft-light;background:linear-gradient(93deg,#0000 0 12%,#ffe7ca21 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9px;height:13px;bottom:0;left:.7%;right:.7%;box-shadow:inset 0 2px #bf845233,0 8px 13px #141b2533}.shelf-shadow{z-index:0;filter:blur(15px);background:#151f2b47;border-radius:50%;height:31px;bottom:-20px;left:2%;right:2%;transform:translateZ(-4px)}.hero-cue{z-index:15;color:var(--muted);align-items:center;gap:14px;display:flex;position:absolute;bottom:24px;left:50%;transform:translate(-50%)}.cue-arrow{color:var(--cobalt);font-size:1.9rem}.collection-section{padding:110px 0 130px}.section-heading{justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px;display:flex}.section-heading h2{margin:0}.category-links,.category-tabs{border-top:1px solid var(--line);flex-wrap:wrap;gap:10px;padding:18px 0 42px;display:flex}.category-links a,.category-tabs button{border:1px solid var(--line);cursor:pointer;background:0 0;border-radius:999px;padding:10px 16px;text-decoration:none}.category-links a:hover,.category-tabs button:hover,.category-tabs button.selected{color:#fff;background:var(--ink);border-color:var(--ink)}.catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:58px 30px;display:grid}.book-card{min-width:0}.cover-well{background:linear-gradient(145deg,#e8eef5,#f8fafc);place-items:end center;height:clamp(360px,40vw,520px);padding:42px 22px 30px;text-decoration:none;display:grid;position:relative;overflow:hidden}.cover-well:after{content:"";filter:blur(12px);background:#192c462e;border-radius:50%;height:25px;position:absolute;bottom:20px;left:18%;right:18%}.book-volume{z-index:1;width:auto;max-width:calc(100% - 44px);height:auto;aspect-ratio:var(--cover-ratio);transform-style:preserve-3d;filter:drop-shadow(16px 20px 16px #1422382e);transition:transform .35s;display:block;position:absolute;top:42px;bottom:30px;left:50%;transform:translate(-50%)rotateY(-7deg)rotate(-1deg)}.book-volume picture,.book-volume img{object-fit:contain;width:100%;height:100%;display:block}.book-page-edge{transform-origin:0;background:repeating-linear-gradient(90deg,#f3ede3 0 2px,#d6ccbd 2px 3px);width:10px;position:absolute;top:3px;bottom:3px;right:-9px;transform:skewY(-18deg)}.cover-well:hover .book-volume{transform:translate(-50%)rotateY(0)translateY(-8px)}.book-card-copy{padding:24px 4px 0}.book-card-copy .eyebrow{margin-bottom:9px}.book-card-copy h3{margin:0 0 8px}.book-card-copy h3 a{text-decoration:none}.book-card-copy>p:not(.eyebrow){color:var(--muted);margin:0;font-size:1.04rem}.book-card-actions{flex-wrap:wrap;gap:12px 22px;margin-top:19px;display:flex}.book-card-actions a{color:var(--cobalt-dark);font-weight:680;text-decoration:none}.guide-promo{background:#dfe7f2;grid-template-columns:1.1fr .9fr;align-items:center;gap:7vw;margin-bottom:120px;padding:80px clamp(36px,7vw,100px);display:grid}.guide-promo h2{margin:0 0 26px}.guide-promo p:not(.eyebrow){max-width:540px;color:var(--muted);margin-bottom:30px;font-size:1.18rem;line-height:1.55}.guide-promo-card{background:#fff;justify-self:center;width:min(100%,380px);padding:24px;transform:rotate(5deg);box-shadow:20px 28px 40px #1d2e4638}.page-intro{padding:92px 0 64px}.page-intro h1{max-width:1000px}.page-intro>p:last-child{max-width:680px;color:var(--muted);font-size:1.22rem;line-height:1.6}.breadcrumb{color:var(--muted);margin-bottom:38px}.breadcrumb a{text-decoration:none}.catalog-react{padding-bottom:130px}.catalog-controls{grid-template-columns:minmax(260px,1fr) auto auto;align-items:end;gap:14px;display:grid}.search-control{border:1px solid var(--line);background:#fff;align-items:center;gap:10px;min-height:52px;padding:0 16px;display:flex}.search-control svg{fill:none;width:20px;stroke:var(--muted);stroke-width:1.6px}.search-control input{width:100%;color:var(--ink);background:0 0;border:0;outline:0}.select-control{color:var(--muted);gap:5px;font-size:.82rem;display:grid}.select-control select,.reader-toolbar select{border:1px solid var(--line);background:#fff;border-radius:0;min-height:52px;padding:0 38px 0 14px}.results-heading{justify-content:space-between;align-items:center;margin:6px 0 28px;display:flex}.results-heading h2{font-family:var(--sans);letter-spacing:0;margin:0;font-size:1rem;font-weight:700}.text-button{color:var(--cobalt-dark);cursor:pointer;background:0 0;border:0;text-decoration:underline}.empty-state{text-align:center;border:1px solid var(--line);background:#fff;padding:80px 24px}.empty-state h3{margin:0 0 8px;font-size:2rem}.empty-state p:not(.eyebrow){color:var(--muted)}.no-script-grid{margin-top:34px}.catalog-react:has(.catalog-browser) noscript{display:none}.book-detail{padding:58px 0 130px}.book-detail-layout{grid-template-columns:minmax(360px,.9fr) minmax(440px,1.1fr);align-items:center;gap:clamp(60px,9vw,150px);display:grid}.detail-cover-stage{perspective:1100px;place-items:center;min-height:720px;display:grid;position:relative}.detail-plinth{clip-path:polygon(12% 0,88% 0,100% 100%,0 100%);background:linear-gradient(145deg,#d8e3ef,#c5d4e4);height:26%;position:absolute;bottom:8%;left:5%;right:5%}.detail-book{z-index:1;width:min(68%,390px);aspect-ratio:var(--detail-ratio);filter:drop-shadow(28px 34px 28px #192a423d);position:relative;transform:rotateY(-10deg)rotate(-1.5deg)}.detail-book picture,.detail-book img{object-fit:contain;width:100%;height:100%}.detail-pages{background:repeating-linear-gradient(90deg,#f1eadf 0 2px,#d7cdbd 2px 3px);width:16px;position:absolute;top:3px;bottom:3px;right:-14px;transform:skewY(-17deg)}.detail-copy h1{font-size:clamp(3.3rem,5.5vw,6rem)}.detail-subtitle{color:var(--muted);margin:18px 0 8px;font-size:1.22rem}.detail-author{margin:0 0 34px;font-weight:650}.detail-summary{color:#32445c;max-width:720px;font-family:var(--display);font-size:1.25rem;line-height:1.62}.detail-actions{flex-wrap:wrap;gap:12px;margin:34px 0;display:flex}.availability-label{min-height:48px;color:var(--muted);background:#e4eaf1;align-items:center;padding:10px 16px;font-weight:700;display:inline-flex}.book-facts{border-top:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.book-facts div{padding:20px 16px 0 0}.book-facts dt{color:var(--muted);text-transform:uppercase;letter-spacing:.12em;font-size:.78rem}.book-facts dd{margin:5px 0 0}.theme-grid{padding-bottom:130px}.theme-card{box-shadow:var(--shadow-soft);background:#fff;grid-template-columns:minmax(260px,430px) 1fr;align-items:center;gap:clamp(42px,8vw,130px);padding:clamp(34px,6vw,82px);display:grid}.theme-cover{background:var(--mist);place-items:center;min-height:450px;display:grid}.theme-cover img{filter:drop-shadow(18px 24px 20px #15243a33);width:auto;max-height:390px}.theme-card h2{margin:0 0 20px}.theme-card p:not(.eyebrow){max-width:560px;color:var(--muted);font-size:1.15rem;line-height:1.55}.level-grid{grid-template-columns:repeat(3,1fr);gap:24px;padding-bottom:130px;display:grid}.level-card{border:1px solid var(--line);background:#fff;flex-direction:column;align-items:flex-start;padding:24px 24px 30px;display:flex}.level-image{background:var(--mist);place-items:center;width:100%;height:380px;margin-bottom:25px;display:grid;overflow:hidden}.level-image img{width:auto;height:88%;box-shadow:12px 18px 28px #16253c29}.level-card h2{margin:0 0 10px;font-size:2.25rem}.level-card>p:not(.eyebrow){color:var(--muted);flex:1}.guide-viewer-intro{padding:50px 0 32px}.guide-viewer-intro .breadcrumb{margin-bottom:45px}.guide-viewer-intro>div{justify-content:space-between;align-items:end;gap:30px;display:flex}.guide-viewer-intro h1{font-size:clamp(3rem,5vw,5.4rem)}.guide-viewer-intro>div>p:last-child{color:var(--muted);font-size:1.12rem}.staging-tag{border:1px solid var(--line);letter-spacing:.1em;text-transform:uppercase;margin-left:12px;padding:5px 8px;font-size:.72rem;display:inline-block}.guide-shell{padding-bottom:90px}.guide-app{grid-template-columns:180px minmax(0,1fr);gap:20px;min-height:760px;display:grid}.reference-rail,.reader-panel{border:1px solid var(--line);background:#ffffff70}.reference-rail{padding:24px 16px;overflow:hidden}.reference-thumbs{scrollbar-width:thin;flex-direction:column;gap:16px;max-height:820px;display:flex;overflow-y:auto}.reference-thumbs button{cursor:pointer;background:0 0;border:1px solid #0000;width:100%;padding:9px}.reference-thumbs button.current{border-color:var(--cobalt);background:#2b58db14}.reference-thumbs img{aspect-ratio:17/22;object-fit:contain;background:#fff;width:100%}.reference-thumbs span{margin-top:7px;font-size:.78rem;display:block}.reader-panel{min-width:0;padding:20px}.reader-toolbar{grid-template-columns:1fr auto auto;align-items:center;gap:16px;margin-bottom:20px;display:grid}.mode-switch{background:#dce4ef;border-radius:7px;padding:5px;display:inline-flex}.mode-switch button{cursor:pointer;background:0 0;border:0;min-height:42px;padding:8px 15px}.mode-switch button.active{background:#fff;box-shadow:0 2px 8px #1b2b4214}.zoom-controls{align-items:center;display:flex}.zoom-controls button{cursor:pointer;background:0 0;border:0;width:38px;height:42px}.zoom-controls output{text-align:center;font-variant-numeric:tabular-nums;width:56px}.guide-stage{background:#dce4ef;place-items:start center;min-height:660px;display:grid;position:relative;overflow:auto}.guide-stage-book{place-items:center;padding:20px}.guide-stage-scroll{overscroll-behavior:contain;align-content:start;height:min(76vh,820px);min-height:560px}.viewer-mode{width:100%;display:none}.viewer-mode.active{display:block}.guide-stage-book .viewer-mode.active{place-items:center;display:grid}.page-flip-root{width:min(100%,1080px);height:min(70vw,720px);transform:scale(var(--guide-zoom));transform-origin:50%;transition:transform .2s}.guide-page{background:#fff;place-items:center;height:100%;display:grid;position:relative;overflow:hidden;box-shadow:inset 0 0 24px #232d3c14}.guide-page img{object-fit:contain;width:100%;height:100%}.single-page-book{aspect-ratio:17/22;width:min(100%,550px);transform:scale(var(--guide-zoom));transform-origin:50%;background:#fff;position:relative;overflow:hidden;box-shadow:0 18px 38px 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.button{font-family:var(--sans);margin-top:26px;font-size:1rem}.prose-page .privacy-date{font-family:var(--sans);margin-top:60px;font-size:.95rem}.not-found{text-align:center;align-content:center;place-items:center;min-height:68vh;display:grid}.not-found h1{max-width:900px}.not-found>p:not(.eyebrow){color:var(--muted);font-size:1.2rem}.not-found>div{gap:12px;margin-top:22px;display:flex}.site-footer{border-top:1px solid var(--line);min-height:135px;color:var(--muted);grid-template-columns:1fr 1fr 1fr auto;align-items:center;gap:28px;display:grid}.site-footer p{margin:0}.footer-brand{color:var(--ink);letter-spacing:-.035em;font-size:1.4rem;font-weight:750;text-decoration:none}.site-footer nav{gap:18px;display:flex}@media (width<=1000px){.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.book-detail-layout{grid-template-columns:.85fr 1.15fr;gap:48px}.detail-cover-stage{min-height:580px}.level-grid{grid-template-columns:1fr}.level-card{grid-template-columns:210px 1fr 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3.8vw, 19px);bottom:calc(18% + 48px)}.book-scene[data-book-count="5"] .scene-book,.book-scene[data-book-count="6"] .scene-book{--book-height:clamp(96px, 26vw, 145px)}.gallery-shelf{height:52px;bottom:18%;left:1.5%;right:1.5%}.shelf-top{height:34px}.shelf-front{border-radius:2px 2px 6px 6px;height:19px;bottom:3px}.shelf-front:before{height:5px}.shelf-front:after{inset-block-start:5px}.shelf-left-end,.shelf-right-end{width:6px;height:15px;bottom:5px}.shelf-underside{height:10px}.shelf-book-shadow{width:clamp(54px,16vw,92px);height:10px}.shelf-shadow{height:22px;bottom:-16px}.hero-cue{font-size:.85rem;bottom:15px}.collection-section,.page-intro{padding-top:72px}.section-heading{flex-direction:column;align-items:start}.category-links{flex-wrap:nowrap;overflow-x:auto}.category-links a{white-space:nowrap}.catalog-grid{grid-template-columns:1fr;gap:50px}.cover-well{height:min(118vw,520px)}.guide-promo{grid-template-columns:1fr;padding:54px 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