:root{--ink:#00293c;--muted:#53636b;--line:#dfe4e5;--teal:#257985;--blue:#00293c;--amber:#272361;--rose:#b9006d;--paper:#f4f7f8;--font:Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 var(--font)}button,input,select{font:inherit}a{color:inherit}button,a,input,summary,select{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{text-underline-offset:3px}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #ec008c;outline-offset:4px}.skip{position:fixed;left:12px;top:-100px;background:white;padding:12px;z-index:9}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.sidebar{background:var(--ink);color:#fff;width:280px;position:fixed;inset:0 auto 0 0;padding:30px 25px;overflow:auto}.brand{display:flex;gap:13px;align-items:center;text-decoration:none;font-size:10px;line-height:1.5;letter-spacing:1px}.brand-mark{font-size:35px;font-weight:800;letter-spacing:-2px}.brand-mark span{color:#ec008c}.collection{margin-top:37px;font-size:12px;letter-spacing:2px;color:#ffffff}.book-name{font:25px/1.2 Georgia,serif;text-decoration:none;display:block;margin-top:11px}.author{font-size:14px;color:#d9e5e9;margin:12px 0 25px}.main-nav{display:grid;gap:4px;margin:0 -10px 24px}.main-nav a{display:flex;gap:12px;padding:10px 12px;text-decoration:none;color:#e1e9ed;font-size:14px;border-radius:5px}.main-nav a.active{background:#17485e;color:#fff}.contents summary{font-size:12px;letter-spacing:1px;cursor:pointer;color:#d7e4e8;margin-bottom:13px}.contents summary span{float:right;letter-spacing:0;color:#c4d5dc}#chapter-nav{display:grid;gap:4px}#chapter-nav a{display:flex;gap:12px;font-size:14px;line-height:1.35;padding:8px 0;text-decoration:none;color:#e1e9ed}#chapter-nav a:hover,#chapter-nav a.active{color:#94e8e5}#chapter-nav .navnum{min-width:21px;color:#c4d5dc;font-size:12px;padding-top:2px}.source-link{display:block;border-top:1px solid #356072;padding-top:20px;margin-top:23px;font-size:14px;color:#fff}.edition{font-size:12px;color:#c7d7de;margin-top:18px}.workspace{margin-left:280px}.topbar{display:flex;align-items:center;gap:24px;justify-content:space-between;padding:20px 42px;border-bottom:1px solid var(--line);background:#fff}.breadcrumb{font-size:13px;color:var(--muted);white-space:nowrap}.breadcrumb strong{font-weight:500;color:var(--ink)}#search-form{display:flex;align-items:center;border:1px solid #c5cfd1;border-radius:6px;max-width:490px;width:100%;padding-left:13px;gap:8px}#search-form>span{font-size:27px;color:var(--teal);line-height:1}input[type=search]{min-width:0;width:100%;padding:9px 0;border:none;background:transparent;font-size:14px;color:var(--ink)}#search-form button{border:0;border-left:1px solid var(--line);background:#f7f9f9;padding:11px 13px;font-size:14px;border-radius:0 5px 5px 0}main{max-width:1360px;margin:0 auto;padding:32px 42px 60px;min-height:80vh}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1.8px;text-transform:uppercase;color:var(--teal);margin:0 0 9px}h1{font:40px/1.1 Georgia,'Times New Roman',serif;margin:0 0 16px;max-width:900px;letter-spacing:-.8px}h2{font:27px/1.2 Georgia,serif;margin:0}h3{line-height:1.3;margin:0}.intro{max-width:770px;color:var(--muted);margin:0 0 23px}.meta{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:27px}.meta span+span{border-left:1px solid #c5cdd0;padding-left:18px}.section-head{display:flex;gap:16px;justify-content:space-between;align-items:center;margin:30px 0 17px}.text-link{color:var(--teal);font-size:14px;font-weight:600}.model{background:#fff;border:1px solid var(--line);border-radius:9px;padding:25px}.model-head{display:flex;justify-content:space-between;gap:15px;margin-bottom:20px}.model-head h2{font-size:24px}.model-head span{font-size:13px;color:var(--muted)}.dimensions{display:grid;grid-template-columns:1fr 1fr;gap:20px}.dimension-label{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:1.2px;font-weight:700;margin-bottom:10px}.dimension-label b{font-size:22px;letter-spacing:0}.dimension-label.me{color:var(--blue)}.dimension-label.us{color:var(--teal)}.element-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.element{display:block;text-decoration:none;padding:17px 15px;border-radius:5px;min-height:133px;border-top:3px solid var(--blue);background:#eaf3f5;transition:transform .15s}.element:hover{transform:translateY(-3px)}.element.us{border-color:var(--teal);background:#edf7f7}.element small{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}.element strong{display:block;font-size:16px;line-height:1.3}.element p{font-size:14px;line-height:1.45;margin:8px 0 0;color:#405c69}.model-bridge{text-align:center;margin:17px 0 0;padding:13px;background:#231f58;border-radius:4px;color:white;font-size:14px}.model-bridge strong{color:#94e8e5}.caption{font-size:12px;color:var(--muted);margin:10px 0 0}.chapter-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.chapter-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:7px;padding:21px;text-decoration:none;border-left:3px solid var(--accent,var(--teal))}.chapter-card:hover{border-color:var(--accent,var(--teal));box-shadow:0 5px 18px #00293c0d}.card-top{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);margin-bottom:10px}.card-top b{font-size:12px;letter-spacing:1px;color:var(--accent,var(--teal))}.chapter-card h3{font-size:18px;font-weight:600}.chapter-card p{font-size:14px;color:var(--muted);margin:9px 0 14px}.card-bottom{font-size:13px;font-weight:600;color:var(--accent,var(--teal));margin-top:auto}.extras{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.pill,.button{display:inline-block;padding:8px 13px;border:1px solid #bfcacc;border-radius:5px;text-decoration:none;font-size:14px;background:#fff;color:var(--ink)}.button.primary{color:white;background:var(--teal);border-color:var(--teal)}.button:hover,.pill:hover{filter:brightness(.96)}.chapter-summary{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;background:white;border:1px solid var(--line);padding:26px;border-radius:8px;margin-top:22px}.chapter-summary h2{font-size:23px}.chapter-summary ul{padding-left:20px;margin-bottom:0}.chapter-summary li{margin:12px 0;font-size:16px}.reflection{background:#edf7f7;padding:22px;border-radius:5px}.reflection h3{font-size:14px;color:var(--teal)}.reflection p{font:21px/1.45 Georgia,serif}.reflection small{font-size:12px;color:var(--muted)}.read-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:18px;margin:30px 0 24px}.read-toolbar label{font-size:14px}.read-toolbar select{padding:8px 12px;background:white;border:1px solid #b8c6c9;border-radius:4px;font-size:14px}.segmented{display:flex;gap:0;border:1px solid #bcc9ca;border-radius:5px;overflow:hidden}.segmented button{padding:8px 13px;background:white;border:none;font-size:14px}.segmented button[aria-pressed=true]{background:var(--ink);color:white}.page-paper{max-width:820px;background:white;border:1px solid var(--line);border-radius:5px;padding:36px 44px;margin:0 auto}.page-label{display:flex;justify-content:space-between;align-items:center;gap:15px;color:var(--muted);font-size:12px;letter-spacing:1px;text-transform:uppercase;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:25px}.page-text{font:19px/1.75 Georgia,serif;overflow-wrap:anywhere}.page-text p{margin:0 0 22px}.page-text .short-block{font-family:var(--font);font-size:16px;line-height:1.6}.page-image{width:100%;height:auto;display:block}.page-pagination{max-width:820px;display:flex;justify-content:space-between;align-items:center;gap:15px;margin:20px auto 0;font-size:14px}.original-help{max-width:820px;margin:15px auto;font-size:13px;color:var(--muted)}.power-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:19px}.power-card{padding:20px 14px;background:white;border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:5px}.power-card>b{font:48px/1 Georgia,serif;color:var(--accent);display:block;margin-bottom:17px}.power-card h3{font-size:16px;min-height:44px}.power-card p{font-size:14px;color:var(--muted)}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.comparison>div{padding:24px;background:white;border:1px solid var(--line);border-top:4px solid var(--rose);border-radius:5px}.comparison>div+div{border-top-color:var(--teal)}.comparison h3{font:25px Georgia,serif}.tags{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.tags span{background:#fff0f8;color:#a70063;padding:6px 12px;border-radius:4px;font-size:14px}.comparison>div+div .tags span{background:#eaf3f5;color:#216a74}.ripple{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:20px;background:white;border:1px solid var(--line);border-radius:6px;overflow:hidden}.ripple>div{padding:25px;border-right:1px solid var(--line)}.ripple>div:last-child{border:0}.ripple b{color:var(--teal);font:38px Georgia,serif}.ripple h3{margin-top:8px;font-size:18px}.ripple p{font-size:14px;color:var(--muted)}.result-list{display:grid;gap:12px}.result{background:#fff;border:1px solid var(--line);border-radius:5px;padding:20px;text-decoration:none}.result:hover{border-color:var(--teal)}.result small{font-size:12px;color:var(--teal);display:block;margin-bottom:5px}.result h3{font-size:18px}.result p{font-size:15px;color:#405c69;line-height:1.6;margin-bottom:0}mark{background:#f8c3e2;color:#00293c;padding:0 2px;border-radius:2px}.empty{padding:35px;background:white;border:1px solid var(--line);border-radius:7px}.footer{border-top:1px solid var(--line);padding:23px 42px;font-size:12px;color:var(--muted);display:flex;gap:20px;justify-content:space-between}.footer span{max-width:450px}.figure-note{padding:15px;background:#eef5f6;font-size:14px;border-radius:4px}.figure-thumb{width:100%;max-height:700px;object-fit:contain}.backlink{display:inline-block;margin-bottom:18px;font-size:14px;color:var(--teal)}
@media(min-width:1450px){main{padding-top:40px}.chapter-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1150px){.sidebar{width:244px;padding:25px 19px}.workspace{margin-left:244px}.topbar{padding:18px 25px}.breadcrumb{display:none}main{padding:28px 25px 45px}.element-grid{grid-template-columns:1fr}.element{min-height:0}.power-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.sidebar{position:static;width:auto;padding:18px 20px}.brand{float:left}.collection,.book-name,.author,.edition,.source-link{display:none}.main-nav{display:flex;clear:both;gap:4px;margin:0;padding-top:14px}.main-nav a{font-size:13px;padding:8px;flex:1;gap:6px}.contents{margin-top:10px}.contents summary{margin:0}.contents[open] summary{margin-bottom:12px}#chapter-nav{grid-template-columns:1fr 1fr;gap:5px 20px}.workspace{margin-left:0}.topbar{padding:15px 20px}#search-form{max-width:none}main{padding:25px 20px 40px}h1{font-size:34px}.meta{gap:10px;font-size:12px}.meta span+span{padding-left:10px}.model{padding:18px}.model-head{display:block}.model-head span{display:block;margin-top:6px}.dimensions{gap:12px}.dimension-label{display:block;line-height:1.4;font-size:10px;letter-spacing:.7px}.dimension-label b{display:block;font-size:22px}.element{padding:14px 11px}.element p{font-size:13px}.element strong{font-size:15px}.chapter-grid{grid-template-columns:1fr}.section-head h2{font-size:24px}.chapter-summary{grid-template-columns:1fr;padding:21px}.page-paper{padding:22px}.page-text{font-size:18px}.power-grid{grid-template-columns:1fr 1fr}.power-card:last-child{grid-column:1/-1}.power-card h3{min-height:0}.comparison{grid-template-columns:1fr}.ripple{grid-template-columns:1fr}.ripple>div{border-right:0;border-bottom:1px solid var(--line)}.footer{padding:22px 20px;display:block}.footer span{display:block;margin-top:7px}.page-pagination{flex-wrap:wrap}.read-toolbar{align-items:flex-start}.read-toolbar>div{display:flex;gap:6px;align-items:center;flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.sidebar,.topbar,.footer,.read-toolbar,.page-pagination,.backlink{display:none}.workspace{margin:0}main{padding:0}.page-paper{max-width:none;border:0}.chapter-summary,.model{break-inside:avoid}}

/* Authentic Change Solutions: supplied artwork and verified website palette. */
:root{--magenta:#ec008c;--book-navy:#231f58;--brand-pink-text:#b9006d}
.sidebar{border-top:5px solid var(--magenta);padding-top:22px}
.brand{display:block;background:white;padding:8px 9px;border-radius:5px;line-height:0}
.acs-logo{display:block;width:100%;height:auto;max-width:236px;margin:auto}
.collection{margin-top:25px;letter-spacing:2px;color:#94e8e5}
.book-name{font-family:'Arial Narrow',Arial,sans-serif;font-size:23px;font-weight:700;line-height:1.25}
.author{margin-bottom:19px}
.main-nav a{border-left:3px solid transparent;border-radius:0 5px 5px 0}
.main-nav a.active{border-left-color:var(--magenta)}
#chapter-nav a.active{background:#17485e;color:white;margin:0 -8px;padding-left:8px;padding-right:8px;border-radius:4px}
#chapter-nav a.active .navnum{color:#94e8e5}
.breadcrumb{color:var(--ink);text-decoration:none;font-size:14px}
.breadcrumb:hover{text-decoration:underline}
.topbar{border-top:5px solid var(--magenta);padding-top:15px}
h1,h2{font-family:'Arial Narrow',Arial,Helvetica,sans-serif;font-weight:700;color:var(--ink)}
h1{font-size:36px;letter-spacing:-.7px}
h2{font-size:25px}
.book-intro{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(200px,1fr);align-items:center;gap:27px;margin-bottom:20px}
.book-identity{min-width:0}
.book-title{margin:0 0 17px;max-width:570px;background:white;border-radius:5px;padding:13px 14px;line-height:0}
.book-title img{display:block;width:100%;height:auto}
.book-identity .intro{margin:0;font-size:16px}
.flow-art{display:block;width:100%;height:auto;border-radius:6px;border:1px solid var(--book-navy)}
.eyebrow{color:var(--brand-pink-text)}
.model{border-top:4px solid var(--magenta)}
.model-bridge{border-bottom:3px solid var(--magenta)}
.model-bridge strong{color:#fff}
.model-bridge>span:last-child{color:#d9e5e9}
.chapter-card{border-left-width:4px}
.chapter-card h3{color:var(--ink)}
.card-top b{font-size:13px}
.reflection{border-left:4px solid var(--magenta)}
.reflection p{font:21px/1.45 'Arial Narrow',Arial,sans-serif;color:var(--ink)}
.chapter-summary li::marker{color:var(--magenta)}
.button.primary{background:var(--ink);border-color:var(--ink);box-shadow:inset 0 -3px 0 var(--magenta)}
.power-card>b{font-family:'Arial Narrow',Arial,sans-serif;font-weight:700}
.comparison h3{font-family:'Arial Narrow',Arial,sans-serif;font-weight:700}
.ripple b{font-family:'Arial Narrow',Arial,sans-serif;font-weight:700;color:var(--brand-pink-text)}
.page-text{color:#203840}
.footer{border-top:3px solid var(--magenta)}
@media(max-width:1150px){.book-intro{grid-template-columns:1fr}.flow-art{display:none}.book-title{max-width:620px}.acs-logo{max-width:190px}}
@media(max-width:760px){.sidebar{border-top:4px solid var(--magenta);padding:16px 20px}.brand{float:none;width:190px;padding:6px;margin:0 auto}.acs-logo{max-width:178px}.topbar{border-top:0}.main-nav{padding-top:15px}.main-nav a{border-bottom:3px solid transparent;border-left:0;border-radius:4px 4px 0 0}.main-nav a.active{border-bottom-color:var(--magenta)}.book-intro{gap:0;margin-bottom:19px}.book-title{padding:9px;margin-bottom:16px}.collection{display:none}.book-identity .eyebrow{font-size:12px}.book-identity .intro{font-size:16px}h1{font-size:31px}.model-head h2{font-size:22px}.page-text{font-size:18px}.contents summary{font-size:13px}.dimension-label{font-size:12px;letter-spacing:.4px}.element p{font-size:14px}}
@media print{.flow-art{display:none}.book-intro{display:block}.book-title{max-width:500px}}

/* Show the supplied butterfly symbol, with the caption outside its display window. */
.butterfly-window{display:block;aspect-ratio:785 / 430;overflow:hidden;width:100%;line-height:0}
.butterfly-window .acs-logo{display:block;width:100%;height:auto;max-width:none;margin:0}
@media(max-width:760px){.brand{width:150px;margin:0;padding:6px}.butterfly-window .acs-logo{max-width:none}}

/* Resource collection: original artwork, readable explanations and chapter context. */
.resource-shelf{margin:28px 0 32px}.resource-shelf .section-head{margin-top:0}.resource-shelf .eyebrow{margin-bottom:5px}
.resource-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.resource-card{display:flex;flex-direction:column;min-width:0;text-decoration:none;background:white;border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:box-shadow .15s,border-color .15s}
.resource-card:hover{border-color:var(--brand-pink-text);box-shadow:0 5px 20px #231f5810}
.resource-preview{aspect-ratio:16/10;background:#fff;padding:9px;border-bottom:3px solid var(--magenta);display:flex;align-items:center;justify-content:center}
.resource-preview img{display:block;width:100%;height:100%;object-fit:contain}
.resource-card-copy{padding:19px;display:flex;flex:1;flex-direction:column}.resource-card-copy small{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--brand-pink-text);margin-bottom:9px}.resource-card h3{font-size:18px}.resource-card p{font-size:14px;line-height:1.55;color:var(--muted);margin:9px 0 18px}.resource-card .text-link{margin-top:auto}
.resource-filters{display:flex;gap:9px;flex-wrap:wrap;margin:25px 0 12px}.resource-filters .selected{background:var(--book-navy);color:white;border-color:var(--book-navy);box-shadow:inset 0 -3px 0 var(--magenta)}.collection-count{margin:14px 0 20px}
.chapter-resources{margin:32px 0}.chapter-resource{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:center;gap:24px;background:white;border:1px solid var(--line);border-left:4px solid var(--magenta);border-radius:7px;padding:20px;margin:16px 0}.chapter-resource-image img{display:block;width:100%;height:auto}.chapter-resource h3{font-size:22px;margin:8px 0}.chapter-resource p{font-size:15px;color:var(--muted)}.chapter-resource .eyebrow{font-size:11px}.wording-note{border-left:3px solid var(--magenta);padding-left:12px}
.resource-actions{display:flex;gap:10px;flex-wrap:wrap}.source-caption{margin:13px 0 30px;overflow-wrap:anywhere}
.resource-concepts{padding:23px;background:var(--book-navy);border-radius:8px;color:white;margin:25px 0}.resource-concepts h2{color:white;font-size:22px}.concept-list{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.concept-list li{display:flex;align-items:center;gap:12px;line-height:1.4;padding:15px;background:#ffffff0e;border:1px solid #ffffff36;border-left:3px solid var(--magenta);border-radius:4px}.concept-list span{color:#ff90d0;font-size:12px}.concept-list strong{font-size:16px;font-weight:600}.resource-concepts .caption{color:#e1dff2}.hierarchy-list{display:flex;flex-direction:column}.hierarchy-list li:nth-child(2n){background:#ffffff18}
.resource-explanation{background:#fff;padding:24px;border:1px solid var(--line);border-radius:7px;margin:25px 0}.resource-explanation h2{font-size:22px}.resource-explanation ul{margin-bottom:0;padding-left:22px}.resource-explanation li{padding-left:3px;margin:12px 0}.resource-explanation li::marker{color:var(--brand-pink-text)}
.source-figures>h2{margin:32px 0 18px}.source-figure{margin:0 0 22px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:15px}.source-figure img{display:block;width:100%;height:auto;max-height:1100px;object-fit:contain}.source-figure figcaption{font-size:13px;color:var(--muted);padding:13px 2px 2px}.resource-transcript{background:#fff;border:1px solid var(--line);border-radius:6px;padding:18px 22px;margin:20px 0}.resource-transcript summary{cursor:pointer;font-weight:700}.resource-transcript>div{max-width:750px;padding-top:9px}.resource-transcript p{margin:14px 0;overflow-wrap:anywhere}.resource-reflection{margin-top:28px}.resource-reflection h2{font-size:16px;text-transform:uppercase;letter-spacing:1px;color:var(--brand-pink-text)}
.wording-comparison{padding:24px;background:#fff4fb;border:1px solid #ebc5dc;border-left:4px solid var(--magenta);border-radius:6px;margin:26px 0}.wording-comparison h2{font-size:23px}.table-scroll{overflow-x:auto}.wording-comparison table{border-collapse:collapse;width:100%;background:#fff;font-size:14px}.wording-comparison caption{text-align:left;font-weight:700;padding:8px 0}.wording-comparison th,.wording-comparison td{padding:12px;text-align:left;border:1px solid #e2d8e2}.wording-comparison thead{background:var(--book-navy);color:white}.wording-comparison th[scope=row]{color:var(--brand-pink-text);font-size:19px}
.related-reading{max-width:820px;margin:26px auto;padding:20px;border:1px solid var(--line);border-left:4px solid var(--magenta);border-radius:6px;background:white}.related-reading h2{font-size:19px}.related-reading .extras{margin-top:12px}
.visual-resources-callout{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px;margin:26px 0;background:#fbe8f4;border-left:4px solid var(--magenta);border-radius:6px}.visual-resources-callout h2{font-size:22px}.visual-resources-callout p{font-size:15px;margin-bottom:0;max-width:570px}.visual-resources-callout .button{flex-shrink:0}
@media(max-width:1150px){.resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.resource-shelf .resource-card:last-child{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr}.resource-shelf .resource-card:last-child .resource-preview{height:100%;border-bottom:0;border-right:3px solid var(--magenta)}.chapter-resource{gap:18px;padding:18px}.visual-resources-callout{display:block}.visual-resources-callout .button{margin-top:16px}}
@media(max-width:760px){.main-nav{display:grid;grid-template-columns:1fr 1fr}.main-nav a{font-size:14px;padding:10px}.resource-grid{grid-template-columns:1fr}.resource-shelf .resource-card:last-child{display:flex;grid-column:auto}.resource-shelf .resource-card:last-child .resource-preview{border-right:0;border-bottom:3px solid var(--magenta)}.resource-preview{aspect-ratio:16/9}.chapter-resource{grid-template-columns:1fr}.chapter-resource-image{max-height:320px;overflow:hidden}.chapter-resource-image img{max-height:320px;object-fit:contain}.section-head{flex-wrap:wrap}.resource-concepts{padding:19px}.concept-list{grid-template-columns:1fr}.resource-explanation{padding:20px}.source-figure{padding:8px}.wording-comparison{padding:18px}.wording-comparison th,.wording-comparison td{padding:8px;min-width:90px}.wording-comparison th:first-child{min-width:0}.resource-filters{gap:8px}.resource-filters .pill{font-size:13px}.resource-reflection p{font-size:20px}}
@media print{.resource-filters,.resource-actions,.visual-resources-callout,.resource-shelf{display:none}.resource-grid{grid-template-columns:1fr 1fr}.source-figure,.chapter-resource{break-inside:avoid}.resource-concepts{color:#00293c;background:#fff;border:1px solid #ccc}.resource-concepts h2,.resource-concepts .caption{color:#00293c}.concept-list span{color:#b9006d}}

.book-quotation{font-style:italic}
.book-quotation mark{font-style:inherit}

/* Author and illustrations at the supplied book-page positions. */
.author-introduction{display:grid;grid-template-columns:128px minmax(0,1fr);gap:25px;align-items:center;padding:22px;background:white;border:1px solid var(--line);border-left:4px solid var(--magenta);border-radius:7px;margin:26px 0}.author-intro-photo{display:block;line-height:0}.author-intro-photo img{width:128px;height:auto;display:block;border-radius:4px}.author-introduction h2{font-size:25px}.author-introduction p:not(.eyebrow){color:var(--muted);max-width:660px;margin:9px 0 12px}.author-introduction .eyebrow{font-size:12px}.author-page-photo{max-width:270px;margin:0 auto 28px}.author-page-photo img{display:block;width:100%;height:auto;border-radius:5px}.author-page-photo figcaption{text-align:center;font-size:14px;color:var(--muted);margin-top:8px}
.inserted-illustration{margin:28px -18px 0;padding-top:22px;border-top:3px solid var(--magenta)}.inserted-illustration img{display:block;width:100%;height:auto}.inserted-illustration figcaption{display:grid;gap:7px;font-size:14px;line-height:1.5;padding:12px 14px;background:#f4f7f8;border-radius:4px}.inserted-illustration figcaption strong{font-size:16px}.inserted-illustration figcaption span{color:var(--muted)}.inserted-illustration figcaption a{color:var(--teal);font-weight:600}
.footer{display:block}.footer-identity{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px}.footer .author-rights{max-width:960px;font-size:14px;line-height:1.65;margin:15px 0 12px}.footer .companion-credit{font-size:12px;margin:10px 0}.footer .book-isbn{font-size:14px;font-weight:700;letter-spacing:.3px;color:var(--ink);margin:16px 0 0;padding-top:13px;border-top:1px solid var(--line)}
@media(max-width:760px){.author-introduction{grid-template-columns:88px minmax(0,1fr);padding:17px;gap:16px;align-items:start}.author-intro-photo img{width:88px}.author-introduction h2{font-size:22px}.author-introduction p:not(.eyebrow){font-size:16px}.author-page-photo{max-width:220px}.inserted-illustration{margin-left:-10px;margin-right:-10px}.footer .footer-identity span{margin:0}.footer-identity{display:grid;gap:6px}.footer .author-rights{font-size:14px}}
@media print{.author-introduction{break-inside:avoid}.author-page-photo{max-width:170px}.inserted-illustration{break-inside:avoid}.footer{display:block;padding:16px 0}.footer .companion-credit{display:none}}