:root{--background:#F5F4F3;--surface:#fff;--text:#000;--blue:#06374A;--brand-orange:#CC4D21;--text-orange:#B8451E;--light-orange:#F28A5B;--secondary:#6B6966;--border:#8A8886;--disabled:#E4E2DF;--danger:#A4161A;--font-family:Aptos,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);color:var(--text);font-family:var(--font-family);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--blue);text-underline-offset:4px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}a,button{touch-action:manipulation}img{max-width:100%;height:auto}button:disabled{background:var(--disabled)!important;color:var(--border)!important;box-shadow:none!important;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--blue);outline-offset:4px}input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}input,select,textarea{background:var(--surface);border:1px solid var(--border);border-radius:3px;color:var(--text);min-height:46px;padding:9px 12px}label{display:block;font-size:15px;font-weight:600;color:var(--blue);margin-bottom:7px}ul{list-style-type:square}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--blue);line-height:1.13;font-weight:600}h1{letter-spacing:-1.9px;font-size:clamp(34px,4.15vw,56px)}h2{letter-spacing:-.7px}h3{letter-spacing:-.3px}[hidden]{display:none!important}.shell{width:min(1224px,calc(100% - 72px));margin-inline:auto}.icon{display:inline-block;width:24px;height:24px;flex-shrink:0;vertical-align:middle}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;z-index:100;top:10px;left:10px;transform:translateY(-150%);background:var(--blue);color:#fff;padding:10px 20px}.skip-link:focus{transform:none}.site-header{display:flex;align-items:center;gap:26px;padding-block:19px 18px;border-bottom:1px solid var(--blue);min-height:108px}.brand{display:block;line-height:0;flex-shrink:0;width:230px;margin-right:auto}.brand img{width:100%;height:auto}.main-nav{display:flex;align-items:center;gap:21px;font-size:14px;white-space:nowrap}.main-nav a,.nav-button{color:var(--blue);background:none;border:0;padding:4px 0;text-decoration:none}.site-header a,.site-header a:hover,.site-header .nav-button,.site-header .nav-button:hover{text-decoration:none}.main-nav [aria-current=page]{font-weight:700}.nav-button{font-size:inherit}.language-switch{display:flex;background:var(--blue);padding:3px;border-radius:9px;align-items:center;flex-shrink:0}.language-switch a{display:inline-flex;text-decoration:none;align-items:center;justify-content:center;border:0;background:transparent;color:#fff;font-size:13px;font-weight:400;line-height:1;letter-spacing:.03em;height:33px;min-height:33px;min-width:35px;padding:0 7px;border-radius:6px}.language-switch a[aria-current=true]{font-weight:400;color:var(--light-orange)}.language-switch a:focus-visible{outline-color:var(--light-orange);outline-offset:-2px}.site-footer{display:flex;justify-content:center;text-align:center;gap:20px;align-items:center;margin-top:62px;padding:22px 0 26px;border-top:10.4px solid var(--blue);font-size:13px;color:var(--secondary)}.site-footer p{margin:0}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:2.3px;font-weight:700;color:var(--text-orange);margin:0 0 15px}.eyebrow:after{content:"";display:block;background:var(--text-orange);width:28px;height:2px;margin-top:10px}.button{display:inline-flex;align-items:center;justify-content:center;gap:18px;text-align:center;background:var(--blue);border:1px solid var(--blue);color:var(--surface);border-radius:3px;min-height:46px;padding:11px 21px;text-decoration:none!important;font-weight:600;font-size:16px;line-height:1.3}.button:hover{filter:brightness(1.1)}.button .icon{width:21px;height:21px}.button-outline{background:var(--surface);color:var(--blue)}.badge-orange{display:inline-block;background:var(--brand-orange);color:#fff;font-weight:700;text-transform:uppercase;letter-spacing:1.8px;border-radius:2px;font-size:11px;padding:8px 13px}.challenge-label{font-size:11px;letter-spacing:1.4px;line-height:1.6;text-transform:uppercase;font-weight:700;color:var(--text-orange);margin:16px 0 9px}.book-subtitle{line-height:1.4;margin-bottom:24px;color:var(--text);font-size:17px}.home-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;padding:42px 0 34px;align-items:center}.hero-intro h1{margin:0 0 22px;line-height:1.08}.hero-lead{font-size:20px;line-height:1.5;margin-bottom:20px}.featured-book{background:var(--background);display:grid;grid-template-columns:minmax(0,1fr) 35%;align-items:center;gap:10px;min-height:330px;padding:22px 20px 24px 25px;border-radius:5px;box-shadow:0 4px 12px #06374a0d,0 1px 2px #06374a0d;border:1.5px solid var(--brand-orange)}.featured-copy{min-width:0}.featured-copy h2{font-size:28px;line-height:1.15;letter-spacing:-.8px;margin-bottom:12px}.featured-copy h2 a,.catalogue-copy h2 a,.starter-copy h3 a{text-decoration-color:#06374a40}.featured-copy h2 a:hover,.catalogue-copy h2 a:hover,.starter-copy h3 a:hover{text-decoration-color:var(--blue)}.featured-cover{display:block;max-width:242px;line-height:0}.featured-cover img{display:block;width:100%;height:275px;object-fit:contain;filter:drop-shadow(7px 8px 6px #06374a25)}.featured-copy .challenge-label{margin-top:20px}.featured-copy .book-subtitle{font-size:16px}.featured-copy .button{font-size:15px;padding-inline:17px}.benefit-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--blue);border-bottom:1px solid var(--blue);padding:23px 0;margin:4px 0 36px}.benefit-strip>div{display:flex;align-items:center;gap:18px;padding:0 25px}.benefit-strip>div+div{border-left:1px solid #06374a60}.benefit-strip .icon{width:34px;height:34px;color:var(--blue)}.benefit-strip p{margin:0;line-height:1.5;font-size:13px}.benefit-strip strong{display:block;font-size:15px;color:var(--blue);font-weight:600}.benefit-strip span{display:block;color:var(--secondary);margin-top:3px}.section-title{font-size:34px;margin:0 0 20px;line-height:1.1}.challenge-section .eyebrow{margin-bottom:10px}.challenge-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}.challenge-card{position:relative;display:flex;align-items:flex-start;flex-direction:column;gap:12px;min-height:150px;background:var(--surface);border:1px solid #e9e6e2;border-radius:4px;padding:18px 16px 20px;color:var(--blue);font-size:16px;line-height:1.27;text-decoration:none}.challenge-card>.icon:first-child{color:var(--text-orange);height:30px;width:30px}.challenge-card span{text-decoration:underline;text-decoration-color:#06374a40;text-underline-offset:3px;padding-right:9px}.challenge-card .challenge-arrow{position:absolute;bottom:13px;right:12px;width:18px;color:var(--text-orange)}.challenge-card:hover{border-color:var(--blue);background:#fbfaf9}.starter-section{margin-top:40px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}.section-heading .eyebrow{margin-bottom:10px}.section-heading .section-title{margin-bottom:0}.text-link{display:inline-flex;align-items:center;gap:9px;font-size:14px;white-space:nowrap}.text-link .icon{width:20px}.section-intro{font-size:17px;margin-top:9px;margin-bottom:25px;color:var(--secondary)}.starter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.starter-book{display:grid;grid-template-columns:36% 1fr;gap:18px;min-width:0}.starter-book+.starter-book{border-left:1px solid #06374a30;padding-left:24px}.starter-cover{display:block;align-self:start;line-height:0}.starter-cover img{width:100%;height:228px;object-fit:contain;object-position:top;filter:drop-shadow(4px 5px 3px #06374a1d)}.starter-copy .challenge-label{font-size:10px;letter-spacing:.8px;margin:0 0 8px;line-height:1.4}.starter-copy h3{font-size:22px;line-height:1.15;margin-bottom:9px}.starter-copy .book-subtitle{font-size:14px;line-height:1.4;margin-bottom:16px}.starter-copy .button{min-height:39px;font-size:13px;padding:9px 12px;gap:14px}.starter-copy .button .icon{width:17px}.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1.3px;color:var(--text-orange);padding:20px 0 22px;line-height:1.4}.breadcrumb a{color:var(--blue)}.breadcrumb>span:last-child{overflow-wrap:anywhere}.catalogue-baseline{font-size:34px;letter-spacing:-.8px;max-width:880px;line-height:1.2;margin:9px 0 30px;white-space:pre-line}.catalogue-filter{display:flex;gap:15px;align-items:center;margin-bottom:32px}.catalogue-filter label{margin:0;font-size:14px;white-space:nowrap}.catalogue-filter select{min-width:270px;max-width:420px;font-size:15px}.clear-filter{font-size:14px}.catalogue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.catalogue-book{display:grid;grid-template-columns:38% minmax(0,1fr);gap:24px;background:var(--background);border:1.5px solid var(--brand-orange);box-shadow:0 4px 12px #06374a0d,0 1px 2px #06374a0d;padding:24px;border-radius:4px;min-height:325px;align-items:center}.catalogue-cover{display:block;line-height:0}.catalogue-cover img{width:100%;height:286px;object-fit:contain;filter:drop-shadow(5px 6px 4px #06374a22)}.catalogue-copy{min-width:0;display:flex;align-items:flex-start;flex-direction:column}.catalogue-copy .challenge-label{font-size:10px;letter-spacing:1.15px;margin:13px 0 7px}.catalogue-copy h2{font-size:26px;line-height:1.12;letter-spacing:-.6px;margin-bottom:10px}.catalogue-copy .book-subtitle{font-size:16px;margin-bottom:20px}.catalogue-copy .button{font-size:14px;min-height:40px;padding:9px 17px}.language-badge{font-size:10px;letter-spacing:1px;font-weight:600;border:1px solid #06374a55;border-radius:12px;line-height:1.2;padding:5px 9px;color:var(--blue)}.catalogue-intro{max-width:880px;padding-top:10px;margin-bottom:33px}.catalogue-intro h1{font-size:43px;letter-spacing:-1.4px;margin-bottom:16px}.catalogue-intro>p:last-child{font-size:18px;line-height:1.6;max-width:850px}.book-detail{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:24px;padding-top:12px;align-items:start}.detail-cover{padding:0;position:sticky;top:28px}.detail-cover img{display:block;width:auto;max-width:100%;height:auto;max-height:480px;object-fit:contain;object-position:left center;filter:drop-shadow(9px 12px 7px #06374a25)}.detail-content{min-width:0;padding-top:4px}.edition-link{display:inline-flex;gap:12px;align-items:center;font-size:13px;border:1px solid #06374a50;border-radius:20px;padding:5px 12px;line-height:1.2;margin-bottom:6px}.edition-link .icon{width:17px;height:17px}.detail-content>.challenge-label{margin-top:16px;font-size:11px}.detail-content h1{font-size:44px;line-height:1.08;letter-spacing:-1.5px;margin-bottom:19px}.detail-subtitle{font-size:23px;color:var(--blue);line-height:1.35;margin-bottom:25px}.order-button{margin-bottom:30px;font-size:17px;padding:13px 25px}.book-tabs{display:flex;border-bottom:1px solid var(--blue);margin-bottom:25px;gap:4px}.book-tabs a{flex:1;text-align:center;font-size:14px;padding:14px 8px;text-decoration:none;border-radius:3px 3px 0 0;border:1px solid #dedbd7;border-bottom:none;line-height:1.3;color:var(--blue);background:var(--surface)}.book-tabs a[aria-current=page]{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:600}.tab-count{font-size:10px;display:inline-block;margin-left:4px;opacity:.8}.prose{line-height:1.7;overflow-wrap:break-word;font-size:17px}.prose p{margin-bottom:18px}.prose h2{font-size:29px;margin:30px 0 15px}.prose h3{font-size:23px;line-height:1.3;margin:27px 0 14px}.prose h4{font-size:20px;color:var(--blue)}.prose ul{padding-left:22px;margin-bottom:22px}.prose li{margin:8px 0}.prose li::marker{color:var(--blue)}.prose img{max-width:100%;height:auto}.prose blockquote{border-left:3px solid var(--light-orange);margin:24px 0;padding:0 0 0 20px;color:var(--blue)}.prose .color-blue{color:var(--blue)}.prose .color-orange{color:var(--text-orange)}.prose .color-red{color:var(--danger)}.prose .align-center{text-align:center}.prose .align-right{text-align:right}.prose .align-justify{text-align:justify}.prose .text-small{font-size:.85em}.prose .text-large{font-size:1.2em}.review-propose{font-size:14px;margin:0 0 17px}.reader-review{display:grid;grid-template-columns:70px minmax(0,1fr);gap:22px;border-top:1px solid #dcd9d5;padding:25px 0}.review-avatar{width:70px;height:70px;object-fit:cover;border-radius:50%;display:block}.review-avatar-empty{display:flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-size:25px}.review-body{font-size:16px}.review-body p{margin-bottom:12px}.review-name{color:var(--blue);font-size:14px;font-weight:700;margin-bottom:0}.pack-content .prose{margin-bottom:27px}.pack-order{display:flex;align-items:center;gap:24px;border-top:1px solid #dcd9d5;padding-top:25px;margin-bottom:18px}.pack-price{font-size:24px;line-height:1.2;font-weight:600;color:var(--blue);margin:0;white-space:nowrap}.muted{font-size:14px;color:var(--secondary)}.empty-state{padding:25px 0;color:var(--secondary)}.book-reader{border:1px solid #d5d9d8;background:var(--surface);border-radius:5px;padding:22px;margin-top:42px}.reader-heading{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:15px;align-items:center;margin-bottom:20px;color:var(--blue)}.reader-heading-copy{min-width:0}.reader-order-button{justify-self:end;max-width:100%}.reader-heading>.icon{width:37px;height:37px}.reader-heading h2{font-size:29px;line-height:1.2;margin-bottom:2px}.reader-heading p{font-size:15px;margin:0}.reader-stage{position:relative;background:#e8eae9;min-height:480px;display:flex;align-items:center;justify-content:center;overflow:auto;padding:30px 55px;border-radius:3px}.reader-start{display:flex;align-items:center;flex-direction:column;gap:24px}.reader-start .button{background:var(--brand-orange);border-color:var(--brand-orange);color:#fff}.reader-start .button:hover{background:var(--text-orange);border-color:var(--text-orange);filter:none}.reader-start img{height:340px;width:auto;object-fit:contain;filter:drop-shadow(8px 10px 6px #06374a30)}.reader-stage.is-reading{height:min(76vh,740px);height:min(76dvh,740px);min-height:380px;display:block;overflow:hidden}.reader-viewport{width:100%;height:100%;overflow:auto;scroll-behavior:auto;scrollbar-gutter:stable both-edges;touch-action:pan-x pan-y pinch-zoom;overscroll-behavior:auto}.is-zoomed .reader-viewport{cursor:grab;overscroll-behavior:contain}.reader-viewport.is-panning{cursor:grabbing;user-select:none}.reader-pages{display:flex;align-items:center;justify-content:center;gap:2px;min-width:100%;min-height:100%;padding:12px;position:relative}.reader-pan-help{font-size:13px;color:var(--secondary);margin:12px 0 0}.reader-pages canvas{display:block;flex:none;max-width:none;width:auto;height:auto;max-height:none;background:#fff;box-shadow:3px 5px 15px #06374a20}.reader-status.is-loading{color:var(--text-orange)}.reader-status{font-size:14px;position:absolute;bottom:9px;left:12px;right:12px;text-align:center;color:var(--blue);margin:0;pointer-events:none}.reader-turn{position:absolute;top:50%;transform:translateY(-50%);border-radius:50%!important;background:var(--surface)!important;box-shadow:0 2px 9px #06374a20}.reader-previous{left:9px}.reader-next{right:9px}.icon-button{border:1px solid transparent;background:transparent;display:inline-flex;align-items:center;justify-content:center;color:var(--blue);height:42px;width:42px;flex-shrink:0;border-radius:3px;font-size:25px;line-height:1}.icon-button:hover{background:#06374a0c}.reader-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:16px;font-size:14px}.reader-position{display:flex;align-items:center;gap:10px}.reader-position label{margin:0;font-size:14px}.reader-position input{width:70px;min-height:38px;text-align:center;padding:5px}.reader-go{min-height:38px;padding:7px 13px;font-size:13px}.reader-tools{display:flex;align-items:center;gap:5px}.book-reader:fullscreen{padding:16px;width:100%;height:100%;border-radius:0;display:flex;flex-direction:column;overflow:auto;background:var(--background)}.book-reader:fullscreen .reader-stage{flex:1;min-height:0;height:auto}.book-reader:fullscreen .reader-heading{margin-bottom:12px}.modal{border:0;border-radius:7px;color:var(--text);background:var(--surface);width:min(590px,calc(100% - 32px));max-height:calc(100vh - 44px);padding:36px;box-shadow:0 20px 100px #06374a45;overflow:auto}.newsletter-modal{width:min(840px,calc(100% - 32px))}.newsletter-modal h2{text-wrap:balance}.modal.newsletter-modal input[type=email]{margin-bottom:4px}.modal.newsletter-modal form>.button{margin-top:4px}.modal::backdrop{background:#06374a80;backdrop-filter:blur(3px)}.modal-close{position:absolute;right:12px;top:12px}.modal h2{font-size:31px;line-height:1.17;margin:16px 0 25px;letter-spacing:-.5px}.modal-symbol{color:var(--text-orange);margin-bottom:20px}.modal-symbol .icon{height:38px;width:38px}.modal .eyebrow{max-width:calc(100% - 30px)}.modal input[type=email]{width:100%;margin-bottom:18px}.modal form>.button{margin-top:12px}.cf-turnstile{margin-block:5px 12px}.honeypot{position:absolute!important;left:-10000px!important;width:1px;height:1px;overflow:hidden}.order-option{border-top:1px solid #dcd9d5;padding-top:22px;margin-top:23px}.order-option-heading{display:flex;align-items:center;gap:12px}.order-option-heading h3{font-size:21px;margin:0}.order-option-heading>.icon{color:var(--text-orange)}.order-option p{font-size:15px;margin:12px 0 17px}.amazon-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}.amazon-links .button{font-size:14px;justify-content:space-between;padding-inline:14px}.ebook-price{margin-left:auto;white-space:nowrap;font-size:21px;font-weight:600;color:var(--blue)}.notice{margin:22px 0;padding:16px 20px;background:var(--surface);border:1px solid var(--blue);border-left-width:4px;color:var(--blue);border-radius:3px;font-size:15px}.notice ul{margin:0;padding-left:18px}.notice-error{border-color:var(--danger);color:var(--danger)}.error-page{display:grid;grid-template-columns:max-content minmax(0,390px);justify-content:center;gap:24px;align-items:center;min-height:600px;padding:35px 0}.error-page h1{font-size:48px}.error-page p{font-size:18px}.error-page .error-code{font-size:84px;line-height:1;font-weight:600;letter-spacing:-3px;color:var(--text-orange);margin:0 0 18px}.error-art{overflow:hidden;width:100%;aspect-ratio:9/10}.error-art img{height:100%;max-width:none;width:166.6667%;object-fit:cover;object-position:right;transform:translateX(-40%)}.edit-mode [data-text-key]{outline:1px dashed var(--text-orange);outline-offset:4px;cursor:crosshair}
@media(min-width:1450px){.shell{width:min(1320px,calc(100% - 100px))}.home-hero{gap:48px;padding-block:45px 40px}.featured-book{padding:26px 24px 28px 28px;min-height:350px}.featured-cover img{height:310px}.hero-intro h1{font-size:58px}.featured-copy h2{font-size:34px}.catalogue-cover img{height:315px}.catalogue-book{min-height:360px}.catalogue-copy h2{font-size:29px}}
@media(max-width:1100px){.shell{width:calc(100% - 48px)}.site-header{gap:18px}.brand{width:190px}.main-nav{gap:14px;font-size:13px}.home-hero{gap:27px}.hero-intro h1{font-size:43px}.hero-lead{font-size:18px}.featured-book{gap:10px;padding:22px 18px;grid-template-columns:minmax(0,1fr) 39%}.featured-copy h2{font-size:27px}.featured-cover img{height:285px}.featured-copy .book-subtitle{font-size:15px}.benefit-strip>div{padding-inline:16px;gap:13px}.benefit-strip strong{font-size:14px}.benefit-strip p{font-size:12px}.challenge-grid{grid-template-columns:repeat(3,1fr)}.challenge-card{min-height:122px;gap:9px}.challenge-card span{max-width:85%}.starter-grid{gap:15px}.starter-book{grid-template-columns:35% 1fr;gap:13px}.starter-book+.starter-book{padding-left:15px}.starter-copy h3{font-size:20px}.starter-copy .book-subtitle{font-size:13px}.starter-cover img{height:205px}.catalogue-book{gap:20px;padding:20px;grid-template-columns:36% minmax(0,1fr)}.catalogue-copy h2{font-size:24px}.catalogue-copy .book-subtitle{font-size:15px}.catalogue-cover img{height:275px}.book-detail{gap:20px;grid-template-columns:28% minmax(0,1fr)}.detail-content h1{font-size:38px}.detail-subtitle{font-size:21px}}
@media(max-width:850px){.reader-heading{grid-template-columns:auto minmax(0,1fr)}.reader-order-button{grid-column:2/-1}.site-header{flex-wrap:wrap;justify-content:space-between;padding-bottom:14px;gap:13px}.brand{width:195px;margin-right:0;order:0}.language-switch{order:1}.main-nav{order:2;width:100%;justify-content:space-between;gap:12px;font-size:14px;padding-top:3px}.home-hero{grid-template-columns:1fr 1fr;gap:24px;padding-top:30px}.hero-intro h1{font-size:37px}.hero-lead{font-size:17px}.featured-book{grid-template-columns:1fr;position:relative;padding:19px;align-items:start}.featured-cover{position:absolute;right:15px;top:14px;width:30%}.featured-cover img{height:137px}.featured-copy .badge-orange{font-size:9px;padding:7px 8px;letter-spacing:1px}.featured-copy>.challenge-label{max-width:64%;min-height:52px;font-size:10px;margin-top:20px;margin-bottom:30px}.featured-copy h2{font-size:27px}.featured-copy .book-subtitle{font-size:15px}.featured-copy .button{padding-block:9px;min-height:40px}.benefit-strip>div{padding:0 12px;gap:10px;align-items:flex-start}.benefit-strip .icon{height:27px;width:27px;margin-top:2px}.benefit-strip strong{font-size:13px}.benefit-strip span{font-size:11px}.starter-grid{grid-template-columns:1fr;gap:25px}.starter-book{grid-template-columns:115px minmax(0,1fr);gap:25px;max-width:100%;align-items:center}.starter-book+.starter-book{padding:24px 0 0;border-left:0;border-top:1px solid #06374a30}.starter-cover img{height:170px}.starter-copy h3{font-size:25px}.starter-copy .book-subtitle{font-size:16px;margin-bottom:12px}.starter-copy .challenge-label{font-size:10px}.starter-copy .button{font-size:14px}.catalogue-grid{gap:15px}.catalogue-book{grid-template-columns:1fr;gap:18px;align-items:start;padding:22px}.catalogue-cover img{height:270px}.catalogue-copy h2{font-size:26px}.catalogue-copy .book-subtitle{font-size:16px}.catalogue-filter{flex-wrap:wrap;gap:12px}.catalogue-filter select{min-width:230px;flex:1}.book-detail{grid-template-columns:25% minmax(0,1fr);gap:18px}.detail-cover{padding:0}.detail-content h1{font-size:32px}.detail-subtitle{font-size:19px}.book-tabs a{font-size:12px}.prose{font-size:16px}.reader-stage{min-height:430px;padding-inline:45px}.error-page{gap:20px}.error-page h1{font-size:37px}}
@media(max-width:580px){.reader-order-button{grid-column:1/-1;font-size:14px}body{font-size:16px}.shell{width:calc(100% - 32px)}.site-header{min-height:auto;padding-top:12px}.brand{width:175px}.main-nav{font-size:12px;gap:9px;flex-wrap:wrap;justify-content:flex-start;column-gap:17px;row-gap:6px}.main-nav a,.nav-button{padding:5px 0}.language-switch{padding:2px}.language-switch a{min-width:32px;height:30px;min-height:30px}.home-hero{grid-template-columns:1fr;gap:25px;padding:28px 0}.hero-intro h1,.hero-lead{max-width:440px}.hero-intro h1{font-size:42px;letter-spacing:-1.6px;margin-bottom:18px}.hero-lead{font-size:18px;margin-bottom:17px}.eyebrow{font-size:10px;letter-spacing:1.9px}.featured-book{grid-template-columns:minmax(0,1fr) 40%;gap:15px;padding:22px 18px;min-height:280px}.featured-cover{position:static;width:auto}.featured-cover img{height:245px}.featured-copy>.challenge-label{max-width:none;min-height:0;font-size:9px;margin:17px 0 9px}.featured-copy h2{font-size:25px;letter-spacing:-.6px}.featured-copy .book-subtitle{font-size:14px;margin-bottom:16px}.featured-copy .button{font-size:13px;padding-inline:12px;gap:10px}.badge-orange{font-size:9px}.benefit-strip{grid-template-columns:1fr;margin:0 0 28px;padding-block:5px}.benefit-strip>div{padding:15px 0;gap:17px;align-items:center}.benefit-strip>div+div{border-left:0;border-top:1px solid #06374a25}.benefit-strip .icon{width:29px;height:29px;margin-left:3px}.benefit-strip strong{font-size:15px}.benefit-strip span{font-size:13px}.section-title{font-size:29px}.challenge-grid{grid-template-columns:repeat(2,1fr);gap:10px}.challenge-card{font-size:15px;padding:17px 14px;min-height:143px;gap:13px}.challenge-card span{max-width:92%}.challenge-card .challenge-arrow{bottom:9px;right:9px}.section-heading{align-items:flex-start;gap:15px}.section-heading .text-link{font-size:12px;white-space:normal;max-width:105px;line-height:1.3;margin-top:32px;gap:4px}.section-heading .text-link .icon{width:16px}.section-intro{font-size:15px;margin-bottom:23px}.starter-section{margin-top:32px}.starter-book{grid-template-columns:100px minmax(0,1fr);gap:19px}.starter-cover img{height:162px}.starter-copy h3{font-size:22px}.starter-copy .book-subtitle{font-size:14px}.site-footer{font-size:11px;margin-top:40px;padding-top:18px;gap:9px;flex-wrap:wrap}.breadcrumb{font-size:9px;letter-spacing:.8px;gap:7px;padding-block:18px}.catalogue-baseline{font-size:29px;letter-spacing:-.8px;margin:10px 0 24px}.catalogue-filter{gap:9px;margin-bottom:23px}.catalogue-filter label{font-size:13px}.catalogue-filter select{width:calc(100% - 80px);min-width:180px;font-size:13px;flex:auto}.clear-filter{font-size:13px}.catalogue-grid{grid-template-columns:1fr;gap:16px}.catalogue-book{grid-template-columns:35% minmax(0,1fr);gap:19px;padding:19px 15px;min-height:240px}.catalogue-cover img{height:218px}.catalogue-copy h2{font-size:22px}.catalogue-copy .book-subtitle{font-size:14px;margin-bottom:16px}.catalogue-copy .button{font-size:13px;padding:8px 14px;min-height:38px}.catalogue-copy .challenge-label{font-size:9px;line-height:1.3;letter-spacing:.7px;margin:10px 0 7px}.catalogue-intro h1{font-size:34px}.catalogue-intro>p:last-child{font-size:16px}.book-detail{display:block;padding-top:5px}.detail-cover{position:static;margin:0 0 30px;width:55%;max-width:230px}.detail-cover img{max-height:340px}.detail-content h1{font-size:36px;letter-spacing:-1.2px}.detail-subtitle{font-size:21px}.detail-content>.challenge-label{font-size:10px}.order-button{font-size:16px;min-height:46px;margin-bottom:25px}.book-tabs{gap:3px;margin-bottom:22px}.book-tabs a{font-size:12px;padding:12px 6px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:3px}.tab-count{font-size:9px;margin:0}.reader-review{grid-template-columns:48px minmax(0,1fr);gap:14px;padding-block:20px}.review-avatar{width:48px;height:48px}.review-body{font-size:15px}.review-propose{font-size:13px;padding:10px 13px;gap:12px}.pack-order{flex-wrap:wrap;gap:16px}.pack-order .button{font-size:14px}.book-reader{padding:14px 10px;margin-top:26px}.reader-heading{gap:11px;margin:0 4px 17px;align-items:flex-start}.reader-heading>.icon{width:29px;height:29px;margin-top:3px}.reader-heading h2{font-size:25px}.reader-heading p{font-size:13px}.reader-stage{min-height:380px;padding:22px 28px 32px}.reader-start img{height:280px}.reader-start .button{font-size:14px}.reader-turn{height:31px;width:31px}.reader-turn .icon{height:20px;width:20px}.reader-previous{left:3px}.reader-next{right:3px}.reader-status{font-size:11px;bottom:8px;left:4px;right:4px}.reader-pages canvas{max-height:none;width:100%}.reader-toolbar{gap:10px;flex-wrap:wrap;padding:13px 4px 0}.reader-position{gap:7px;font-size:12px}.reader-position label{font-size:12px}.reader-position input{min-height:35px;width:52px;font-size:12px;padding:5px 3px}.reader-go{font-size:11px;min-height:35px;padding:7px 10px}.reader-tools{margin-left:auto;gap:2px}.reader-tools .icon-button{width:32px;height:35px;font-size:22px}.reader-tools .icon{height:21px;width:21px}.modal{padding:30px 23px;max-height:calc(100dvh - 24px)}.modal h2{font-size:27px}.modal .eyebrow{font-size:10px}.modal-close{right:7px;top:7px}.modal-symbol{margin-bottom:16px}.amazon-links{gap:8px}.amazon-links .button{font-size:12px;padding:10px;gap:5px}.amazon-links .icon{width:16px}.order-option-heading{gap:9px}.order-option-heading h3{font-size:18px}.ebook-price{font-size:18px}.order-option p{font-size:14px}.error-page{grid-template-columns:1fr;min-height:auto;gap:18px;padding:40px 0 10px;text-align:center}.error-page h1{font-size:39px}.error-page p{font-size:16px}.error-art{max-width:340px;justify-self:center}}

/* Align the opaque spine of the original cover mockups; keep uploaded covers at their natural origin. */
.detail-cover img[src$="/assets/catalogue/14.webp"]{transform:translateX(-10.30769%)}.detail-cover img[src$="/assets/catalogue/15.webp"]{transform:translateX(-10.15385%)}.detail-cover img[src$="/assets/catalogue/19.webp"]{transform:translateX(-8.92308%)}.detail-cover img[src$="/assets/catalogue/20.webp"]{transform:translateX(-10.46154%)}.detail-cover img[src$="/assets/catalogue/22.webp"]{transform:translateX(-11.07692%)}.detail-cover img[src$="/assets/catalogue/23.webp"]{transform:translateX(-9.38462%)}.detail-cover img[src$="/assets/catalogue/25.webp"]{transform:translateX(-9.23077%)}.detail-cover img[src$="/assets/catalogue/26.webp"]{transform:translateX(-8.92308%)}.detail-cover img[src$="/assets/catalogue/27.webp"]{transform:translateX(-8.15385%)}.detail-cover img[src$="/assets/catalogue/28.webp"]{transform:translateX(-10.46154%)}.detail-cover img[src$="/assets/catalogue/29.webp"]{transform:translateX(-9.69231%)}.detail-cover img[src$="/assets/catalogue/30.webp"]{transform:translateX(-8.76923%)}.detail-cover img[src$="/assets/catalogue/31.webp"]{transform:translateX(-10.61538%)}.detail-cover img[src$="/assets/catalogue/32.webp"]{transform:translateX(-10.61538%)}.detail-cover img[src$="/assets/catalogue/33.webp"]{transform:translateX(-9.07692%)}.detail-cover img[src$="/assets/catalogue/34.webp"]{transform:translateX(-6.30769%)}.detail-cover img[src$="/assets/catalogue/35.webp"]{transform:translateX(-8.61538%)}.detail-cover img[src$="/assets/catalogue/36.webp"]{transform:translateX(-8.46154%)}.detail-cover img[src$="/assets/catalogue/37.webp"]{transform:translateX(-10.00000%)}.detail-cover img[src$="/assets/catalogue/38.webp"]{transform:translateX(-8.30769%)}.detail-cover img[src$="/assets/catalogue/39.webp"]{transform:translateX(-9.38462%)}.detail-cover img[src$="/assets/catalogue/40.webp"]{transform:translateX(-10.30769%)}.detail-cover img[src$="/assets/catalogue/41.webp"]{transform:translateX(-9.07692%)}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{.site-header,.site-footer,.book-reader,.book-tabs,.order-button,.modal,.breadcrumb{display:none!important}.book-detail{display:block}.detail-cover{max-width:180px;position:static;float:left;margin-right:25px}.shell{width:100%}}

/* Catalogue challenge picker: native keyboard and form behavior, branded presentation. */
.catalogue-filter{gap:22px;margin-bottom:34px;flex-wrap:wrap}
.catalogue-filter>label{display:flex;align-items:center;gap:12px;margin:0;font-size:18px;font-weight:700;line-height:1.3;letter-spacing:1.4px;text-transform:uppercase;color:var(--blue)}
.catalogue-filter>label::before{content:"";width:4px;height:22px;border-radius:3px;background:var(--brand-orange)}
.catalogue-select{position:relative;display:block;flex:0 1 420px;max-width:100%;min-width:0}
.catalogue-filter .catalogue-select select{display:block;appearance:none;-webkit-appearance:none;width:100%;max-width:none;min-width:0;min-height:58px;padding:15px 66px 15px 20px;border:1.5px solid var(--brand-orange);border-radius:12px;background:var(--background);color:var(--blue);font-size:17px;font-weight:600;line-height:1.4;cursor:pointer;box-shadow:0 3px 0 #cc4d2110,0 5px 14px #06374a08;transition:border-color .18s,box-shadow .18s,background-color .18s}
.catalogue-filter .catalogue-select select:hover{background:#fbf8f5;box-shadow:0 4px 0 #cc4d2115,0 8px 18px #06374a0d}
.catalogue-filter .catalogue-select select:focus-visible{outline:3px solid var(--blue);outline-offset:4px;box-shadow:none}
.catalogue-select-arrow{pointer-events:none;position:absolute;right:10px;top:50%;display:grid;place-items:center;width:36px;height:36px;transform:translateY(-50%);border-radius:8px;color:var(--text-orange);background:#cc4d2110}
.catalogue-select-arrow svg{transition:transform .18s}
.catalogue-select:has(select:open) .catalogue-select-arrow svg{transform:rotate(180deg)}
.catalogue-filter .clear-filter{font-size:15px;color:var(--text-orange);text-decoration-thickness:1px;text-underline-offset:5px}
@supports (appearance:base-select){
    .catalogue-filter .catalogue-select select,.catalogue-filter select::picker(select){appearance:base-select}
    .catalogue-filter select::picker-icon{display:none}
    .catalogue-filter select::picker(select){border:1px solid var(--brand-orange);border-radius:12px;padding:6px;background:var(--background);color:var(--blue);box-shadow:0 12px 30px #06374a26;margin-block-start:8px;max-height:min(440px,70dvh);max-width:calc(100vw - 32px);overflow:auto}
    .catalogue-filter select option{display:flex;align-items:center;gap:12px;min-height:46px;margin:2px 0;padding:11px 14px;border-radius:7px;font-size:16px;font-weight:400;line-height:1.4;white-space:normal;cursor:pointer}
    .catalogue-filter select option:first-child{margin-bottom:6px;font-weight:600}
    .catalogue-filter select option:hover,.catalogue-filter select option:focus-visible{background:#cc4d2114;color:var(--blue);outline:2px solid var(--brand-orange);outline-offset:-2px}
    .catalogue-filter select option:checked{background:#cc4d2114;color:var(--text-orange);font-weight:600}
    .catalogue-filter select option::checkmark{color:var(--text-orange)}
}
@media(max-width:580px){
    .catalogue-filter{align-items:stretch;gap:12px;margin-bottom:26px}
    .catalogue-filter>label{width:100%;font-size:17px;letter-spacing:1.3px}
    .catalogue-select{flex-basis:100%;width:100%}
    .catalogue-filter .catalogue-select select{font-size:16px;padding-left:16px;padding-right:58px;min-height:56px}
    .catalogue-filter .clear-filter{margin-top:2px}
}
@media(prefers-reduced-motion:reduce){.catalogue-filter .catalogue-select select,.catalogue-select-arrow svg{transition:none}}

/* Formatting classes saved by the shared rich-text editor. */
.public-site .text-default{color:var(--text)}
.public-site .text-blue{color:var(--blue)}
.public-site .text-orange{color:var(--text-orange)}
.public-site .text-muted{color:var(--secondary)}
.public-site .text-small{font-size:.85em}
.public-site .text-normal{font-size:1em}
.public-site .text-large{font-size:1.2em}
.public-site .align-left{text-align:left}
.public-site .align-center{text-align:center}
.public-site .align-right{text-align:right}
.public-site .align-justify{text-align:justify}
.contact-modal{width:min(900px,calc(100% - 32px));padding:40px;max-height:calc(100dvh - 40px);background:var(--background);border:1px solid var(--brand-orange);border-top-width:4px;border-radius:12px}
.contact-author{display:grid;grid-template-columns:180px minmax(0,1fr);align-items:start;gap:32px}
.contact-portrait{margin-top:3px;border-radius:8px;overflow:hidden;box-shadow:7px 8px 0 #06374a0d}
.contact-portrait img{display:block;width:100%;height:auto;aspect-ratio:3/4;object-fit:cover;object-position:50% 35%}
.contact-bio{min-width:0}.contact-bio .eyebrow{margin-bottom:12px}.contact-modal h2{font-size:34px;margin:0 0 20px}.contact-modal h2:focus{outline:none}.contact-bio p:not(.eyebrow){font-size:16px;line-height:1.65;margin-bottom:14px}
.contact-linkedin{display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:600;margin-top:3px;text-decoration:none}.contact-linkedin span:first-child{text-decoration:underline;text-decoration-color:#06374a55;text-underline-offset:4px}.contact-linkedin .icon{width:19px;height:19px;color:var(--text-orange)}
.contact-email{display:flex;align-items:center;gap:18px;margin-top:30px;border:1px solid #06374a22;border-left:4px solid var(--brand-orange);border-radius:6px;padding:20px 24px;background:#06374a06}.contact-email-symbol{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid #06374a20;border-radius:50%;color:var(--text-orange);flex-shrink:0}.contact-email h3{font-size:16px;line-height:1.5;margin:0 0 2px;font-weight:400}.contact-email a{font-size:20px;font-weight:600;overflow-wrap:anywhere;text-decoration-color:#06374a55}
@media(max-width:640px){.contact-modal{padding:28px 22px;max-height:calc(100dvh - 24px)}.contact-author{grid-template-columns:1fr;gap:24px}.contact-portrait{width:130px;max-width:55%;margin:0}.contact-modal h2{font-size:30px;margin-bottom:16px}.contact-bio p:not(.eyebrow){font-size:15px;line-height:1.6}.contact-email{padding:16px 14px;gap:12px;margin-top:24px}.contact-email-symbol{width:34px;height:34px}.contact-email-symbol .icon{width:20px;height:20px}.contact-email h3{font-size:14px}.contact-email a{font-size:17px}}