/* Editorial reading system: independent of the wider product demonstrations. */
.book-hero,.book-contents{padding:76px var(--edge)}
.book-hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:100px;background:#edf3f8;border-bottom:1px solid var(--line)}
.book-hero h1{max-width:800px;font-size:clamp(2.7rem,4.2vw,4.2rem);line-height:1.09;margin-bottom:28px}
.book-lede{max-width:680px;font-size:1.1875rem;line-height:1.75;color:#40576d}
.book-byline{font-size:.875rem;color:var(--muted);margin:24px 0}.book-byline span{padding:0 8px;color:#6b7e90}
.book-hero .actions{margin-top:34px}.book-principle{border-left:1px solid #bdcfdd;padding-left:48px;align-self:center}
.book-large-number{font-size:6.5rem;font-weight:450;letter-spacing:-.07em;line-height:1;color:#2868a7}
.book-principle>p{color:#40576d;font-size:1rem;margin:16px 0 26px}.book-principle blockquote{font-size:1.0625rem;color:#40576d;margin:0 0 20px;line-height:1.65;max-width:360px}
.book-section-heading{display:flex;align-items:baseline;gap:40px;justify-content:space-between;margin-bottom:42px}.book-section-heading h2{font-size:2rem}.book-section-heading p{max-width:540px;color:var(--muted);margin:0}
.book-index{display:grid;grid-template-columns:1fr 1fr;column-gap:64px;list-style:none;margin:0;padding:0}.book-index li{border-top:1px solid var(--line)}.book-index a{display:grid;grid-template-columns:96px 1fr;gap:20px;padding:28px 0;height:100%}.chapter-number{font-variant-numeric:tabular-nums;font-size:.75rem;letter-spacing:.02em;color:#547596;padding-top:4px}.book-index h3{font-size:1.3125rem;font-weight:550;line-height:1.4;letter-spacing:-.02em;margin-bottom:10px;text-wrap:initial}.book-index p{font-size:1rem;color:var(--muted);line-height:1.65;margin:0 0 12px}.book-index a:hover h3{color:var(--blue);text-decoration:underline;text-underline-offset:4px}.book-readtime{font-size:.8125rem;color:#547596}.book-readtime span{padding-left:10px}
.book-brand-note{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px var(--edge);background:#eaf2f9;border-bottom:1px solid var(--line);font-size:.8125rem;color:#375c80}.book-brand-note>span{font-weight:550;white-space:nowrap}.book-brand-note a{text-decoration:underline;text-underline-offset:4px}
.book-layout{max-width:1256px;margin:0 auto;padding:48px 40px 64px;display:grid;grid-template-columns:236px minmax(0,740px);gap:80px;justify-content:center}
.book-sidebar{position:sticky;top:122px;align-self:start;max-height:calc(100dvh - 150px);overflow:auto;scrollbar-width:thin;padding-right:16px}.book-toc>summary{font-size:.875rem;font-weight:550;cursor:pointer;padding:0 0 18px;list-style:none;border-bottom:1px solid var(--line)}.book-toc>summary::-webkit-details-marker{display:none}.book-toc>summary:after{content:'−';float:right}.book-toc:not([open])>summary:after{content:'+'}.book-chapter-list{list-style:none;margin:12px 0 0;padding:0}.book-chapter-list a{display:grid;grid-template-columns:22px 1fr;gap:9px;padding:9px 8px;font-size:.8125rem;line-height:1.5;color:#556b7e;border-left:2px solid transparent}.book-chapter-list a:hover{color:#1b568b;background:#edf3f8}.book-chapter-list a[aria-current]{color:#174d7e;border-color:#347cc1;background:#eaf2f9;font-weight:550}.book-chapter-list .chapter-number{font-size:.6875rem;padding:2px 0 0}.book-pdf{display:block;margin-top:20px;font-size:.8125rem;text-decoration:underline;text-underline-offset:4px;color:#315d84}
.book-reading-column{min-width:0}.book-breadcrumbs{font-size:.8125rem;display:flex;flex-wrap:wrap;gap:8px;color:#667a8d;margin-bottom:38px}.book-breadcrumbs a{color:#315d84}.book-breadcrumbs a:hover{text-decoration:underline}.chapter-header{border-bottom:1px solid var(--line);padding-bottom:28px;margin-bottom:36px}.chapter-header .eyebrow{margin-bottom:20px}.chapter-header .eyebrow span{font-size:.75rem;color:#6c8093;font-weight:400;letter-spacing:0}.chapter-header h1{font-size:clamp(2.125rem,3vw,3rem);line-height:1.16;letter-spacing:-.035em;text-wrap:initial;margin-bottom:22px}.chapter-deck{font-size:1.125rem;color:#52677c;line-height:1.75;margin:0}.chapter-header .book-byline{margin-bottom:0}.chapter-outline{font-size:.875rem;margin-top:26px;padding:14px 18px;background:#f0f5f9}.chapter-outline summary{cursor:pointer;font-weight:500}.chapter-outline ul{padding-left:20px;margin:14px 0 0}.chapter-outline li{margin:8px 0}.chapter-outline a{text-decoration:underline;text-underline-offset:3px}
.book-prose{font-size:1.125rem;line-height:1.85;color:#273a4b}.book-prose p{margin-bottom:1.25em}.book-prose strong{font-weight:600;color:#19364f}.book-prose h2{font-size:1.75rem;line-height:1.35;letter-spacing:-.025em;text-wrap:initial;margin:46px 0 20px}.book-prose h3{font-size:1.3125rem;line-height:1.4;letter-spacing:-.015em;text-wrap:initial;margin:32px 0 16px}.book-prose a:not(.heading-anchor){color:#2365a6;text-decoration:underline;text-underline-offset:3px}.heading-anchor{font-size:.7em;font-weight:400;color:#8098af;margin-left:.5em;opacity:0}.book-prose h2:hover .heading-anchor,.book-prose h3:hover .heading-anchor,.heading-anchor:focus-visible{opacity:1}.book-prose .citation{font-size:.8em;vertical-align:super;line-height:0}.book-table{overflow:auto;max-width:100%;margin:26px 0;font-size:.875rem;line-height:1.6}.book-table table{width:100%;min-width:460px;border-collapse:collapse;text-align:left}.book-table caption{text-align:left;color:#52677c;font-size:.8125rem;margin-bottom:12px}.book-table th,.book-table td{padding:13px 16px;border-bottom:1px solid #cbd8e3;vertical-align:top}.book-table thead{background:#18364f;color:#fff}.book-table tbody th{font-weight:500}.book-table tbody tr:last-child{background:#eaf2f8;font-weight:550}
.chapter-pagination{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);gap:32px;padding:28px 0 0;margin:44px 0 0}.chapter-pagination a{padding:8px 0}.chapter-pagination span{display:block;color:#667d92;font-size:.8125rem;margin-bottom:10px}.chapter-pagination strong{font-size:1rem;font-weight:500;line-height:1.5;display:block}.chapter-pagination a:last-child{text-align:right}.chapter-pagination a:hover strong{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
.book-product{background:#edf3f8;border-top:1px solid #d3dfe9;padding:52px var(--edge);display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.6fr);gap:64px;align-items:center}.book-product .eyebrow{margin-bottom:16px}.book-product h2{font-size:clamp(1.625rem,2.5vw,2.25rem);margin:0 0 18px;text-wrap:initial}.book-product p:not(.eyebrow):not(.micro){max-width:740px;color:#52677c;margin:0}.book-product .micro{margin:16px 0 0;max-width:320px}
.book-promo{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:80px;background:#eaf1f7;border-top:1px solid #d8e2eb}.book-promo h2{margin-bottom:24px}.book-promo .section-lede{font-size:1.0625rem;margin-bottom:28px}.book-promo-index>a{display:grid;grid-template-columns:34px 1fr 20px;gap:16px;padding:24px 0;border-top:1px solid #c6d7e5;align-items:start}.book-promo-index>a>span{font-size:.8125rem;color:#557595}.book-promo-index strong{font-size:1.125rem;line-height:1.5;font-weight:500}.book-promo-index>a:hover strong{color:var(--blue)}.book-promo-index p{font-size:.8125rem;color:#667d92;margin:20px 0 0}
@media(min-width:1025px){.book-toc:not([open]) nav{display:block}.book-toc>summary{pointer-events:none}.book-toc>summary:after{display:none}}
@media(max-width:1100px){.book-hero{gap:50px}.book-layout{gap:44px;grid-template-columns:210px minmax(0,740px);padding-inline:32px}.book-index{column-gap:40px}.book-index a{grid-template-columns:72px 1fr}.book-index .chapter-number{font-size:.6875rem}}
@media(max-width:800px){.book-hero,.book-contents{padding:48px 24px}.book-hero{grid-template-columns:1fr;gap:40px}.book-principle{display:none}.book-section-heading{display:block;margin-bottom:30px}.book-section-heading h2{margin-bottom:16px}.book-index{grid-template-columns:1fr}.book-index a{grid-template-columns:82px 1fr;gap:16px;padding:24px 0}.book-index h3{font-size:1.2rem}.book-brand-note{padding:12px 24px}.book-brand-note>span{display:none}.book-layout{display:flex;flex-direction:column;gap:28px;padding:24px 24px 44px}.book-sidebar{position:static;max-height:none;width:100%;padding:0;overflow:visible}.book-toc{background:#edf3f8;padding:14px 18px}.book-toc>summary{padding:0;border:0}.book-toc[open] nav{max-height:300px;overflow:auto;margin-top:16px}.book-pdf{display:none}.book-breadcrumbs{margin-bottom:26px}.chapter-header{padding-bottom:24px;margin-bottom:30px}.book-prose{font-size:1.0625rem;line-height:1.85}.book-prose h2{font-size:1.5rem}.book-product{grid-template-columns:1fr;gap:24px;padding:36px 24px}.book-product .micro{max-width:none}.book-promo{grid-template-columns:1fr;gap:36px}.book-promo-index>a{padding:20px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.header,.global-footer,.book-sidebar,.book-brand-note,.chapter-outline,.chapter-pagination,.book-product,.skip{display:none!important}.book-layout{display:block;max-width:none;padding:0}.book-prose{font-size:11pt;line-height:1.6}.book-reading-column{width:100%}.book-prose h2,.book-prose h3{break-after:avoid}.book-table{overflow:visible}.chapter-header h1{font-size:24pt}}