.book-site{--book-reading-size:20px}.book-nav{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:24px;padding:22px 0;font-size:13px;display:flex}.book-nav-title{letter-spacing:.13em;font-size:11px;font-weight:700}.book-nav>div{align-items:center;gap:25px;display:flex}.book-nav a[aria-current]{color:var(--blue);text-underline-offset:6px;text-decoration:underline}.book-hero{grid-template-columns:minmax(0,1.4fr) minmax(290px,.85fr);align-items:start;gap:64px;padding:74px 0 64px;display:grid}.book-hero h1{letter-spacing:-.055em;font-size:clamp(43px,4.9vw,67px);line-height:1.06}.book-deck{max-width:520px;font-family:Georgia,Times New Roman,serif;font-size:25px;line-height:1.4}.book-description{color:var(--muted);max-width:540px;font-size:17px}.book-format{color:var(--muted);margin:25px 0 0;font-size:12px}.book-journey{background:var(--navy);color:#fff;border-radius:5px;padding:30px 29px 23px;box-shadow:9px 9px #e1e9f2}.book-journey .eyebrow{color:#b0c7df}.book-journey>a{color:#f4f8ff;border-top:1px solid #ffffff30;grid-template-columns:27px 1fr 32px;align-items:center;gap:12px;padding:15px 0;font-size:15px;display:grid}.book-journey>a:hover{color:#acd7ff}.book-journey>a>span{color:#9bbbdc;font:12px ui-monospace,monospace}.book-journey>a>strong{font-weight:500;line-height:1.35}.book-journey small{color:#a9c4dd;text-align:right;font-size:11px}.book-journey>p:last-child{color:#b4c6d8;border-top:1px solid #ffffff30;margin:17px 0 0;padding-top:17px;font-size:12px;line-height:1.6}.book-continue{border-left:3px solid var(--blue);background:#eaf1fb;align-items:center;gap:18px;margin:0 0 35px;padding:17px 22px;font-size:14px;display:flex}.book-continue strong{font-weight:500}.book-continue>span{margin-left:auto}.book-entry-points{border-block:1px solid var(--line);grid-template-columns:1fr 1fr;margin-bottom:72px;display:grid}.book-entry-points>a{padding:28px 28px 22px 0}.book-entry-points>a+a{border-left:1px solid var(--line);padding-left:32px}.book-entry-points .eyebrow{margin-bottom:13px;display:block}.book-entry-points h2{letter-spacing:-.025em;margin-bottom:13px;font-size:25px}.book-entry-points h2 span{color:var(--blue);margin-left:12px;font-size:20px}.book-entry-points p{color:var(--muted);max-width:470px;margin:0;font-size:15px;line-height:1.6}.book-contents>.section-heading{margin-bottom:45px}.book-contents>.section-heading p{font-size:15px}.book-part{border-top:1px solid var(--line);grid-template-columns:260px 1fr;gap:50px;padding:32px 0;display:grid}.book-part .eyebrow{margin:0 0 12px}.book-part h3{max-width:240px;font-size:29px;line-height:1.2}.book-part ol{margin:0;padding:0;list-style:none}.book-part li+li{border-top:1px solid #d5e0ed80}.book-part li a{grid-template-columns:30px 1fr 75px;align-items:start;gap:15px;padding:15px 0;font-size:17px;line-height:1.45;display:grid}.book-chapter-number{color:var(--blue);padding-top:5px;font:12px ui-monospace,monospace}.book-part small{color:var(--muted);text-align:right;white-space:nowrap;padding-top:4px;font-size:12px}.book-part small b{color:var(--blue);margin-left:12px;font-size:18px;font-weight:400}.book-about{border-top:1px solid var(--line);grid-template-columns:1fr 1fr;gap:75px;padding:65px 0 90px;display:grid}.book-about h2{font-size:37px}.book-about>div>p:not(.eyebrow){color:var(--muted);font-size:16px}.book-about a:not(.button){text-underline-offset:4px;color:var(--blue);text-decoration:underline}.book-page-heading{max-width:780px;padding:62px 0 34px}.book-page-heading h1{font-size:clamp(40px,5vw,64px)}.book-page-heading>p:not(.eyebrow){color:var(--muted);max-width:660px;font-size:19px}.book-reading-layout{grid-template-columns:215px minmax(0,1fr) 180px;align-items:start;gap:35px;padding:42px 0 80px;display:grid}.book-chapter-sidebar,.book-section-sidebar{scrollbar-width:thin;max-height:calc(100vh - 40px);position:sticky;top:20px;overflow:auto}.book-side-part{margin-bottom:25px}.book-side-part>p{color:var(--muted);margin-bottom:11px;font-size:10px;font-weight:700;line-height:1.5}.book-side-part ol{margin:0;padding:0;list-style:none}.book-side-part li a{border-left:2px solid #0000;gap:9px;padding:8px 8px 8px 0;font-size:12px;line-height:1.5;display:flex}.book-side-part li a span{color:var(--muted);flex-shrink:0;min-width:17px;margin-top:2px;font-size:10px}.book-side-part li a[aria-current]{color:var(--blue);border-color:var(--blue);background:#eaf1fb;padding-left:8px}.book-section-sidebar a{color:var(--muted);margin:0 0 13px;font-size:11px;line-height:1.6;display:block}.book-section-sidebar a:hover{color:var(--blue)}.book-section-sidebar .book-search-shortcut{border-top:1px solid var(--line);color:var(--blue);padding-top:18px;font-weight:700}.book-chapter-header h1{margin-bottom:20px;font-size:clamp(33px,3.3vw,47px);line-height:1.12}.book-chapter-header .eyebrow{font-size:10px}.book-chapter-label{color:var(--blue);margin:0 0 12px;font-size:15px;font-weight:700}.book-chapter-label>span{color:var(--muted);font-weight:400}.book-edition{color:var(--muted);font-size:12px}.book-reader-tools{border-block:1px solid var(--line);align-items:center;gap:14px;margin:24px 0 35px;padding:7px 0;font:12px Arial,sans-serif;display:flex}.book-reader-tools button{color:var(--muted);cursor:pointer;background:0 0;border:0;min-width:38px;min-height:40px;padding:8px}.book-reader-tools button[aria-pressed=true]{color:var(--blue);background:#eaf1fb;border-radius:3px}.book-progress{color:var(--muted);white-space:nowrap;margin-left:auto;font-size:11px}.book-prose{font-family:Georgia,Times New Roman,serif;font-size:var(--book-reading-size);overflow-wrap:break-word;line-height:1.8}.book-prose h2{letter-spacing:-.025em;margin:48px 0 22px;scroll-margin-top:28px;font:600 28px/1.25 Arial,sans-serif}.book-prose h3{letter-spacing:-.02em;margin:34px 0 18px;scroll-margin-top:28px;font:600 22px/1.35 Arial,sans-serif}.book-prose p{margin-bottom:23px}.book-prose a{color:var(--blue);text-underline-offset:3px;text-decoration:underline}.book-prose em{color:inherit;font-style:italic}.book-prose li{margin-block:8px}.book-prose ul,.book-prose ol{padding-left:25px}.book-prose pre{color:#ecf4ff;background:#102d4b;border-radius:4px;max-width:100%;padding:22px;line-height:1.6;overflow:auto}.book-prose code{overflow-wrap:anywhere;background:#e9eff6;border-radius:2px;padding:2px 4px;font:.76em/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}.book-prose pre code{color:inherit;overflow-wrap:normal;background:0 0;padding:0}.book-prose table{border-collapse:collapse;max-width:100%;margin:25px 0;font:14px/1.55 Arial,sans-serif;display:block;overflow-x:auto}.book-prose th,.book-prose td{border:1px solid var(--line);vertical-align:top;min-width:110px;padding:12px}.book-prose th{text-align:left;background:#edf3fa;font-weight:700}.book-prose blockquote{border-left:3px solid var(--blue);color:#33506e;margin:28px 0;padding:10px 0 1px 24px}.book-prose figure{margin:35px 0}.book-prose figure img{border:1px solid var(--line);background:#fff;border-radius:4px;width:100%;height:auto;display:block}.book-prose figcaption{color:var(--muted);margin-top:12px;font:12px/1.6 Arial,sans-serif}.book-related{border-top:1px solid var(--line);margin-top:45px;padding-top:28px}.book-related a{border:1px solid var(--line);color:var(--blue);border-radius:3px;margin:0 8px 9px 0;padding:8px 12px;font-size:13px;display:inline-block}.book-prev-next{border-top:1px solid var(--line);grid-template-columns:1fr 1fr;gap:28px;margin-top:32px;padding-top:28px;display:grid}.book-prev-next a{min-width:0}.book-prev-next small{color:var(--muted);letter-spacing:.06em;margin-bottom:13px;font-size:10px;display:block}.book-prev-next strong{font-size:17px;font-weight:500;line-height:1.45;display:block}.book-prev-next a:last-child{text-align:right}.book-mobile-chapters{display:none}.book-search{max-width:920px;margin-bottom:85px}.book-search form>label{margin-bottom:10px;font-size:13px;font-weight:700;display:block}.book-search-input{background:#fff;border:1px solid #95aec8;border-radius:4px;align-items:center;gap:13px;padding:8px 12px;display:flex}.book-search-input>span{color:var(--blue);font-size:35px;line-height:1}.book-search-input input{min-width:0;color:var(--ink);background:0 0;border:0;flex:1;padding:12px 5px;font-size:18px}.book-search-input button{color:var(--blue);cursor:pointer;background:#eef3fa;border:0;border-radius:3px;padding:10px 15px;font-size:13px}.book-search-input button:disabled{opacity:.5;cursor:default}.book-filters{grid-template-columns:1fr 1fr;gap:24px;margin:22px 0;display:grid}.book-filters label{font-size:12px;font-weight:700}.book-filters select{border:1px solid var(--line);width:100%;color:var(--ink);text-overflow:ellipsis;background:#fff;border-radius:3px;margin-top:8px;padding:12px 30px 12px 12px;font:14px Arial,sans-serif;display:block}.book-result-count{color:var(--muted);padding-top:8px;font-size:14px}.book-results{margin:25px 0;padding:0;list-style:none}.book-results li{border-top:1px solid var(--line);padding:25px 0 12px}.book-results .eyebrow{margin-bottom:12px;font-size:10px}.book-results h2{margin-bottom:12px;font-size:26px;line-height:1.25}.book-results h2 span[aria-hidden]{color:var(--blue);font-size:18px}.book-results li>p:last-child{color:var(--muted);font-size:16px;line-height:1.75}.book-results mark{color:#102d4b;background:#f9e4a7;padding:0 2px}.book-empty{padding:35px 0}.book-empty h2{font-size:29px}.book-search-suggestions{border-top:1px solid var(--line);margin-top:35px;padding-top:30px}.book-search-suggestions h2{font-size:25px}.book-search-suggestions button{border:0;border-top:1px solid var(--line);text-align:left;width:100%;color:var(--blue);cursor:pointer;background:0 0;justify-content:space-between;gap:20px;padding:17px 0;font-size:16px;display:flex}.book-concept-jumps{flex-wrap:wrap;gap:9px;padding:0 0 40px;display:flex}.book-concept-jumps a{border:1px solid var(--line);background:#fff;border-radius:3px;padding:8px 12px;font-size:13px}.book-concepts{grid-template-columns:1fr 1fr;gap:0 55px;padding-bottom:65px;display:grid}.book-concepts>section{border-top:1px solid var(--line);padding:28px 0 35px;scroll-margin-top:30px}.book-concepts h2{font-size:28px}.book-concepts .eyebrow{margin-bottom:13px;font-size:10px}.book-concepts p{color:var(--muted);font-size:16px}.book-concepts details{margin-top:20px;font-size:14px}.book-concepts summary{cursor:pointer;min-height:40px}.book-concepts li{margin-bottom:11px}.book-concept-search{color:var(--blue);margin-top:12px;font-size:13px;display:inline-block}.book-companion-copy{max-width:800px;margin:0 auto 65px}@media (min-width:1450px){.book-site .section-wrap{width:min(1380px,100% - 96px)}.book-reading-layout{grid-template-columns:240px minmax(0,750px) 200px;gap:50px}}@media (max-width:1100px){.book-reading-layout{grid-template-columns:195px minmax(0,1fr);gap:32px}.book-section-sidebar{display:none}.book-hero{gap:35px}.book-hero h1{font-size:50px}.book-part{grid-template-columns:230px 1fr;gap:25px}}@media (max-width:760px){.book-nav{flex-direction:column;align-items:flex-start;gap:13px;padding:20px 0}.book-nav>div{flex-wrap:wrap;gap:20px;width:100%;font-size:12px}.book-hero{grid-template-columns:1fr;gap:30px;padding:42px 0}.book-hero h1{font-size:46px}.book-deck{font-size:23px}.book-journey{padding:25px;box-shadow:5px 5px #e1e9f2}.book-journey>a{padding:13px 0}.book-entry-points{grid-template-columns:1fr;margin-bottom:45px}.book-entry-points>a,.book-entry-points>a+a{border-left:0;padding:25px 0}.book-entry-points>a+a{border-top:1px solid var(--line)}.book-part{grid-template-columns:1fr;gap:10px;padding:27px 0}.book-part h3{max-width:none;font-size:27px}.book-part li a{grid-template-columns:23px 1fr 52px;gap:9px;font-size:16px}.book-part small{font-size:10px}.book-part small b{margin-left:3px}.book-about{grid-template-columns:1fr;gap:15px;padding:42px 0}.book-about h2{font-size:33px}.book-reading-layout{padding-top:28px;display:block}.book-chapter-sidebar{display:none}.book-mobile-chapters{border-bottom:1px solid var(--line);padding:15px 0;display:block}.book-mobile-chapters summary{cursor:pointer;min-height:32px;font-size:14px}.book-mobile-chapters nav{padding:22px 0 0}.book-mobile-chapters .book-side-part li a{min-height:44px;font-size:14px}.book-chapter-header h1{font-size:37px}.book-prose{font-size:var(--book-reading-size)}.book-prose h2{font-size:26px}.book-prose pre{padding:16px;font-size:16px}.book-reader-tools{gap:7px}.book-reader-tools button{min-width:40px;min-height:44px}.book-progress{font-size:10px}.book-prev-next{gap:20px}.book-prev-next strong{font-size:16px}.book-page-heading{padding:40px 0 25px}.book-page-heading h1{font-size:43px}.book-filters{grid-template-columns:1fr;gap:15px}.book-search-input{gap:6px;padding:6px}.book-search-input input{font-size:16px}.book-search-input>span{font-size:28px}.book-concepts{grid-template-columns:1fr}.book-continue{display:block}.book-continue strong{margin-top:7px;display:block}.book-continue>span{display:none}.book-results h2{font-size:24px}}@media print{.site-header,.site-footer,.book-nav,.book-chapter-sidebar,.book-section-sidebar,.book-mobile-chapters,.book-reader-tools,.book-prev-next,.book-related{display:none!important}.book-site .section-wrap{width:100%}.book-reading-layout{padding:0;display:block}.book-prose{color:#000;font-size:11pt}.book-prose h2{break-after:avoid}.book-prose pre{white-space:pre-wrap;color:#000;background:#eee}.book-prose table{width:100%;font-size:9pt;display:table}.book-prose th,.book-prose td{min-width:0;padding:5px}.book-prose figure{break-inside:avoid}.book-chapter-header h1{font-size:28pt}.book-prose a{color:#000}}.book-prose .book-visual{break-inside:avoid;background:#fff;border:1px solid #b8c9db;border-radius:8px;margin:2rem 0;overflow:hidden}.book-visual-heading{padding:1.1rem 1.25rem .25rem}.book-visual-heading>span{letter-spacing:.12em;color:#225fce;font:700 .7rem/1.4 Arial,sans-serif}.book-prose .book-visual-heading h3{margin:.4rem 0;font:600 1.25rem/1.3 Arial,sans-serif}.book-visual-canvas{overflow-x:auto}.book-visual-canvas svg{width:100%;min-width:440px;height:auto;display:block}.book-visual .visual-node{transition:opacity .5s}.book-visual .node-frame{transition:stroke-width .5s,stroke .5s}.book-visual.is-focused .visual-node{opacity:.72}.book-visual.focus-0 .node-0,.book-visual.focus-1 .node-1,.book-visual.focus-2 .node-2,.book-visual.focus-3 .node-3,.book-visual.focus-4 .node-4,.book-visual.focus-5 .node-5{opacity:1}.book-visual.focus-0 .node-0 .node-frame,.book-visual.focus-1 .node-1 .node-frame,.book-visual.focus-2 .node-2 .node-frame,.book-visual.focus-3 .node-3 .node-frame,.book-visual.focus-4 .node-4 .node-frame,.book-visual.focus-5 .node-5 .node-frame{stroke:#225fce;stroke-width:4px}.book-visual-controls{background:#f4f7fb;border-top:1px solid #d7e0eb;padding:1rem 1.25rem;font-family:Arial,sans-serif}.book-visual-actions,.book-visual-steps{flex-wrap:wrap;gap:.5rem;display:flex}.book-visual-controls button{cursor:pointer;color:#102d4b;background:#fff;border:1px solid #8097b0;border-radius:4px;min-height:40px;padding:.55rem .7rem;font-size:.8rem;line-height:1.3}.book-visual-actions>button:first-child{color:#fff;background:#102d4b}.book-visual-steps{margin-top:.8rem}.book-visual-controls button[aria-pressed=true]{outline-offset:2px;outline:2px solid #225fce}.book-visual-controls button:focus-visible{outline-offset:3px;outline:3px solid #225fce}.book-prose .book-visual-explanation{min-height:4.8em;margin:.9rem 0 0;font-size:.9rem;line-height:1.6}.book-prose .book-visual figcaption{margin:0;padding:.8rem 1.25rem;font-size:.85rem;line-height:1.5}.book-visual-download{padding:0 1.25rem 1rem;font:500 .8rem/1.5 Arial,sans-serif;display:block}@media (prefers-reduced-motion:reduce){.book-visual .visual-node,.book-visual .node-frame{transition:none}}@media print{.book-visual-controls,.book-visual-download{display:none!important}.book-visual .visual-node{opacity:1!important}.book-visual .node-frame{stroke:#102d4b!important;stroke-width:2px!important}.book-visual-canvas svg{min-width:0}.book-prose .book-visual{border:0}}.book-visual-pan-hint{display:none}@media (max-width:520px){.book-prose .book-visual-pan-hint{color:#4e6279;margin:.5rem 1.25rem;font:400 .8rem/1.5 Arial,sans-serif;display:block}}@media print{.book-visual-pan-hint{display:none!important}}.book-launch{grid-template-columns:minmax(230px,.7fr) minmax(0,1.3fr);align-items:center;gap:clamp(2rem,6vw,6rem);padding:4rem 0 5rem;scroll-margin-top:2rem;display:grid}.book-launch-cover{aspect-ratio:3/4;color:#fff;background:#102d4b;border-left:9px solid #225fce;flex-direction:column;justify-content:space-between;max-width:360px;padding:2rem;display:flex;transform:rotate(-2deg);box-shadow:12px 14px #d8e2ef}.book-launch-cover>span,.book-launch-cover>small{letter-spacing:.2em;font:600 .75rem/1.5 Arial,sans-serif}.book-launch-cover>div{margin:1.5rem 0;font:500 clamp(1.8rem,3vw,2.8rem)/1.12 Georgia,serif}.book-launch-cover em{color:#adcaff;font-weight:400}.book-launch-cover p{color:#dce6f2;font-size:.95rem;line-height:1.5}.book-launch-copy h1,.book-launch-copy h2{letter-spacing:-.035em;margin:.7rem 0 1.5rem;font:500 clamp(2.4rem,4vw,4rem)/1.08 Georgia,serif}.book-launch-copy h1 em,.book-launch-copy h2 em{color:#225fce;font-weight:400}.book-launch-copy>p{max-width:600px;line-height:1.7}.book-launch-chapter{color:#536c87;font-size:.9rem}.book-launch-offers{border-block:1px solid #c4d2e2;grid-template-columns:1fr 1fr;gap:1.5rem;margin:1.75rem 0 2rem;padding:1.25rem 0;display:grid}.book-launch-offers>div+div{border-left:1px solid #c4d2e2;padding-left:1.5rem}.book-launch-offers strong{color:#102d4b;font:600 2rem/1.2 Georgia,serif;display:block}.book-launch-offers span{margin-top:.5rem;font-size:.9rem;line-height:1.6;display:block}.book-launch-note,.book-waitlist-pending p{color:#536c87;font-size:.8rem}.book-waitlist-pending button:disabled{cursor:default;opacity:.65}.book-launch-back{padding-bottom:3rem}@media (max-width:700px){.book-launch{grid-template-columns:1fr;gap:2.5rem;padding-top:2rem}.book-launch-cover{justify-self:center;max-width:220px;padding:1.4rem}.book-launch-cover>div{font-size:1.8rem}.book-launch-cover p{font-size:.8rem}.book-launch-offers{gap:1rem}.book-launch-offers>div+div{padding-left:1rem}}.book-launch-dialog{color:#102d4b;background:#fffaf3;border:1px solid #b8c9db;border-radius:12px;width:min(1060px,100% - 2rem);max-height:calc(100dvh - 2rem);padding:2rem 3rem;overflow:auto}.book-launch-dialog::backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#081a2fa6}.book-launch-dialog .book-launch{gap:3rem;padding:2rem 0}.book-dialog-close{color:#102d4b;cursor:pointer;background:#fff;border:1px solid #b8c9db;border-radius:4px;margin-left:auto;padding:.55rem .85rem;display:block}.book-dialog-close:focus-visible{outline-offset:3px;outline:3px solid #225fce}@media (max-width:700px){.book-launch-dialog{padding:1rem 1.25rem}.book-launch-dialog .book-launch-cover{display:none}.book-launch-dialog .book-launch{gap:1rem;padding:1.5rem 0}}.book-launch-dialog{margin:auto}.book-part li a{grid-template-columns:30px minmax(0,1fr) max-content}@media (max-width:760px){.book-part li a{grid-template-columns:23px minmax(0,1fr) max-content}}.book-promo{color:#225fce;margin:1.3rem 0 .8rem;font-size:clamp(1.1rem,2vw,1.4rem);font-weight:650;line-height:1.4}.book-hero-cover{perspective:1400px;justify-self:center;max-width:390px;padding:1rem 1rem 2rem}.book-hero-cover img,.book-cover-display img{border-radius:1px 4px 4px 1px;width:100%;height:auto;display:block;transform:rotateY(-8deg)rotate(-2deg);box-shadow:9px 8px #d1d7db,13px 11px #102d4b,22px 30px 40px #102d4b30}.book-cover-display{max-width:340px;padding:1rem}.book-waitlist-form{margin:1.5rem 0}.book-waitlist-fields{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.book-waitlist-fields label{gap:.4rem;font-size:.85rem;font-weight:600;display:grid}.book-waitlist-fields input{color:#102d4b;background:#fff;border:1px solid #8c9eb1;border-radius:5px;width:100%;min-width:0;padding:.8rem;font:400 16px/1.4 Arial,sans-serif}.book-waitlist-fields input:focus-visible{outline-offset:2px;outline:3px solid #225fce}.book-waitlist-consent{align-items:flex-start;gap:.7rem;margin:1rem 0;font-size:.83rem;line-height:1.5;display:flex}.book-waitlist-consent input{accent-color:#225fce;flex-shrink:0;width:18px;height:18px;margin-top:.2rem}.book-form-trap{width:1px;height:1px;position:absolute;left:-10000px;overflow:hidden}.book-form-privacy{color:#52677f;max-width:540px;margin:.8rem 0;font-size:.75rem;line-height:1.6}.book-form-status{font-size:.95rem;line-height:1.6}.book-form-status.error{color:#9e2424;padding:.8rem 0}.book-form-status.done{color:#124c42;background:#edf6f2;border-left:3px solid #156c66;padding:1rem}@media (max-width:700px){.book-hero-cover{max-width:260px}.book-cover-display{justify-self:center;max-width:230px}.book-launch-dialog .book-cover-display{display:none}.book-waitlist-fields{grid-template-columns:1fr}}