/* Visual lesson components adapted from the standalone field guide. */

:root{--bg:#f5f7fc;--paper:#ffffff;--ink:#1a273e;--muted:#617089;--soft:#eef2f8;--border:#dfe7f1;--blue:#466cc7;--blue-soft:#e7efff;--teal:#168976;--teal-soft:#e4f6ef;--purple:#7957ad;--amber:#996b29;--shadow:0 15px 45px rgba(25,49,93,.06);--radius:20px;--reading:17px}
:root[data-theme="dark"]{--bg:#0c1425;--paper:#142139;--ink:#edf3ff;--muted:#aab9d0;--soft:#1d2e49;--border:#2a3b59;--blue:#91b1ff;--blue-soft:#223655;--teal:#70dbc2;--teal-soft:#163b39;--purple:#c6aaf5;--amber:#f2c98e;--shadow:0 15px 45px rgba(0,0,0,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-size:var(--reading);line-height:1.72;-webkit-text-size-adjust:100%}button,input,select{font:inherit}button{cursor:pointer}a{color:var(--blue)}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--teal);outline-offset:3px}.shell{display:grid;grid-template-columns:300px minmax(0,1fr);max-width:1640px;margin:auto;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--paper);border-right:1px solid var(--border);padding:27px 17px 40px;scrollbar-width:thin;z-index:50}.brand{padding:4px 12px 20px;border-bottom:1px solid var(--border)}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:14px;color:white;background:linear-gradient(130deg,#476bc5,#36ad9c);font-weight:900;font-size:23px;box-shadow:0 8px 18px #468bb52e}.brand h1{font-size:19px;line-height:1.25;margin:12px 0 4px;letter-spacing:-.04em}.brand p{color:var(--muted);font-size:12px;line-height:1.45;margin:0}.sidebar-label{font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--muted);margin:22px 12px 10px}.nav-link{display:flex;gap:9px;align-items:flex-start;border-radius:11px;padding:8px 9px;text-decoration:none;color:var(--ink);font-size:12px;line-height:1.45;margin:2px 0}.nav-link:hover,.nav-link.active{background:var(--blue-soft);color:var(--blue)}.nav-num{font-weight:850;color:var(--teal);min-width:20px}.nav-link>span:nth-child(2){flex:1}.nav-check{color:var(--muted);font-size:15px;line-height:1}.nav-link.done .nav-check{color:var(--teal);font-weight:800}.sidebar-footer{margin-top:22px;border-top:1px solid var(--border);padding:18px 10px;font-size:12px;color:var(--muted)}.sidebar-footer button{border:1px solid var(--border);background:transparent;color:var(--muted);border-radius:8px;font-size:11px;padding:5px 8px}.workspace{min-width:0}.topbar{position:sticky;top:0;z-index:35;background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(15px);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:13px;min-height:64px;padding:10px clamp(18px,3vw,50px)}.topbar .top-title{font-size:12px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;white-space:nowrap}.topbar .top-spacer{flex:1}.icon-button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--paper);color:var(--ink);width:36px;height:36px;border-radius:11px;font-size:17px}.topbar .toggle-nav{display:none}.progress-track{height:4px;background:var(--soft);position:absolute;bottom:0;left:0;right:0}.progress-track>i{display:block;height:100%;width:0;background:linear-gradient(90deg,#497bc9,#1aa58c);transition:width .25s}.progress-caption{font-size:12px;color:var(--muted);white-space:nowrap}.reading{max-width:1030px;margin:0 auto;padding:0 clamp(20px,4vw,66px) 100px}.hero{padding:74px 0 53px;position:relative}.eyebrow{display:block;font-size:11px;letter-spacing:.16em;font-weight:850;color:var(--teal);text-transform:uppercase}.hero h2{font-size:clamp(48px,6vw,80px);letter-spacing:-.065em;line-height:1.07;max-width:800px;margin:18px 0 19px;font-weight:850}.hero h2 em{font-style:normal;color:var(--blue)}.hero-intro{font-size:21px;color:var(--muted);line-height:1.55;max-width:770px;margin:0 0 27px}.hero-chips{display:flex;gap:9px;flex-wrap:wrap}.hero-chips span,.pill{display:inline-block;padding:5px 10px;border-radius:999px;border:1px solid var(--border);background:var(--paper);color:var(--muted);font-size:11px;font-weight:750}.hero-art{margin-top:43px;min-height:160px;background:linear-gradient(125deg,#16294a,#254679 62%,#167d79);border-radius:24px;padding:26px 32px;color:white;display:flex;align-items:center;gap:24px;box-shadow:var(--shadow);overflow:hidden}.hero-art>div:first-child{flex:1}.hero-art h3{font-size:24px;margin:0 0 7px;line-height:1.25;letter-spacing:-.04em}.hero-art p{font-size:14px;color:#d8e9ff;margin:0;max-width:480px}.orbit{width:150px;height:120px;position:relative;flex-shrink:0}.orbit span{position:absolute;display:flex;align-items:center;justify-content:center;border:1px solid #a4c4ec;background:#ffffff24;border-radius:50%;font-size:11px;font-weight:900;letter-spacing:.03em;box-shadow:0 0 0 6px #ffffff12}.orbit span:nth-child(1){width:72px;height:72px;top:20px;left:38px}.orbit span:nth-child(2){width:49px;height:49px;top:0;left:0}.orbit span:nth-child(3){width:53px;height:53px;top:7px;right:0}.orbit span:nth-child(4){width:52px;height:52px;bottom:0;left:0}.orbit span:nth-child(5){width:50px;height:50px;bottom:0;right:0}.section-header{margin-top:35px;border-top:1px solid var(--border);padding-top:27px}.section-header h2{font-size:31px;letter-spacing:-.045em;line-height:1.2;margin:6px 0 8px}.section-header p{color:var(--muted);margin:0}.roadmap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin:23px 0 45px}.roadmap-card{display:flex;flex-direction:column;gap:8px;text-decoration:none;background:var(--paper);border:1px solid var(--border);border-radius:17px;padding:19px 20px;min-height:168px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s}.roadmap-card:hover{transform:translateY(-3px);border-color:var(--blue)}.roadmap-card span{font-size:10px;font-weight:850;letter-spacing:.12em;color:var(--teal)}.roadmap-card b{font-size:18px;letter-spacing:-.03em;line-height:1.26;color:var(--ink)}.roadmap-card small{font-size:12px;line-height:1.45;color:var(--muted)}.roadmap-card i{font-style:normal;font-size:11px;color:var(--blue);font-weight:800;margin-top:auto}.chapter{scroll-margin-top:90px;padding:44px 0 62px;border-top:1px solid var(--border)}.chapter-kicker{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--teal);font-size:10px;font-weight:850;letter-spacing:.15em}.chapter-kicker span:last-child{color:var(--muted)}.chapter h2{font-size:clamp(36px,4.8vw,55px);line-height:1.1;letter-spacing:-.06em;margin:15px 0 10px;font-weight:850;max-width:850px}.chapter-subtitle{font-size:19px;color:var(--muted);line-height:1.5;margin:0 0 42px;max-width:710px}.chapter-content h3{font-size:23px;letter-spacing:-.035em;line-height:1.3;margin:41px 0 12px}.chapter-content p{margin:12px 0 18px;max-width:800px}.chapter-content strong{font-weight:760}.chapter-content code{font-size:.85em;background:var(--soft);padding:2px 5px;border-radius:4px}.chapter-content a.source{font-size:12px;font-weight:800;text-decoration:none}.graphic,.interactive,.note,.try,.myth,.takeaway,.checkpoint,.specimen{margin:25px 0;background:var(--paper);border:1px solid var(--border);border-radius:18px;padding:23px 24px;box-shadow:var(--shadow)}.graphic-title{font-size:13px;font-weight:800;margin-bottom:16px;letter-spacing:-.01em}.graphic small,.micro{display:block;color:var(--muted);font-size:11px;line-height:1.55;margin-top:10px}.graphic svg{display:block;width:100%;height:auto;max-height:270px}.barline{display:flex;align-items:center;gap:12px;margin:11px 0;font-size:12px}.barline>span{min-width:55px;font-weight:800}.barline>b{width:70px;text-align:right;font-size:12px;font-variant-numeric:tabular-nums}.track{height:12px;border-radius:999px;background:var(--soft);flex:1;overflow:hidden}.track i{display:block;height:100%;background:linear-gradient(90deg,#507acc,#28a78e);border-radius:999px}.concept-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0}.concept{border:1px solid var(--border);background:var(--paper);padding:20px;border-radius:16px}.concept-icon{display:block;width:32px;height:32px;border-radius:10px;background:var(--blue-soft);color:var(--blue);font-size:11px;font-weight:900;text-align:center;line-height:32px;margin-bottom:12px}.concept strong{display:block;font-size:16px}.concept p{font-size:13px;color:var(--muted);line-height:1.55;margin:6px 0 0}.token-showcase{display:flex;gap:5px;flex-wrap:wrap}.token-showcase span{border-radius:8px;padding:8px 11px;font-weight:800;font-size:15px;color:#22364e}.token-showcase span:nth-child(5n+1){background:#cce3fb}.token-showcase span:nth-child(5n+2){background:#cdf0e6}.token-showcase span:nth-child(5n+3){background:#f4e4c5}.token-showcase span:nth-child(5n+4){background:#e8dcf7}.token-showcase span:nth-child(5n){background:#f7dce3}.note{border-left:4px solid var(--blue);background:var(--blue-soft)}.note strong,.try strong,.myth strong{display:block;font-size:14px;margin-bottom:5px}.note p,.try p,.myth p{font-size:14px;line-height:1.65;margin:4px 0}.try{background:var(--teal-soft);border-left:4px solid var(--teal)}.myth{background:var(--soft);border-left:4px solid var(--purple)}.pipeline{margin:26px auto;max-width:570px;display:flex;flex-direction:column;gap:6px;text-align:center}.pipeline>div{padding:13px 18px;border:1px solid var(--border);background:var(--paper);border-radius:13px;box-shadow:var(--shadow)}.pipeline>div em{display:block;font-size:10px;font-style:normal;font-weight:900;color:var(--teal);letter-spacing:.15em}.pipeline>div strong{display:block;font-size:14px;line-height:1.45;margin-top:4px}.pipeline>span{color:var(--teal);font-size:20px;line-height:1}.interactive-head{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:19px}.interactive-head>strong{font-size:17px}.interactive label{display:block;font-size:13px;font-weight:800;margin:12px 0 7px}.interactive output{float:right;font-variant-numeric:tabular-nums;color:var(--teal)}input[type=range]{width:100%;accent-color:var(--blue);cursor:pointer}.choice-row{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:10px}.prompt-chip{display:inline-block;background:var(--soft);border-radius:8px;padding:7px 10px;font-size:13px}.demo-bar{display:flex;align-items:center;gap:10px;font-size:12px;margin:9px 0}.demo-bar span:first-child{min-width:110px}.demo-bar .track{height:10px}.demo-bar b{width:44px;text-align:right}.fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.fields label{margin:0;font-size:12px}.fields select{display:block;margin-top:8px;padding:10px;border-radius:9px;border:1px solid var(--border);background:var(--paper);color:var(--ink);width:100%;font-size:13px}.fields label input{display:block;margin-top:9px}.result-panel{background:var(--soft);padding:19px;margin-top:17px;border-radius:13px}.result-panel small{display:block;color:var(--muted);font-size:12px}.result-panel strong{display:block;font-size:37px;line-height:1.2;letter-spacing:-.06em;margin:3px 0 13px}.result-panel p{font-size:12px;line-height:1.5;margin:8px 0 0;color:var(--muted)}.memory-track{height:11px;background:var(--border);border-radius:20px;overflow:hidden}.memory-track i{display:block;height:100%;background:linear-gradient(90deg,#52a98a,#caa75c);width:0}.comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin:24px 0}.comparison>div{background:var(--paper);border:1px solid var(--border);border-radius:15px;padding:19px;min-width:0}.comparison h4{font-size:17px;line-height:1.3;margin:10px 0 8px}.comparison p{font-size:13px;color:var(--muted);line-height:1.55;margin:0}.expert-row{display:flex;gap:5px;flex-wrap:wrap;margin:11px 0}.expert-row i{font-style:normal;border:1px solid var(--border);border-radius:5px;padding:6px;font-size:11px;background:var(--soft);color:var(--muted)}.expert-row i.active{background:var(--teal-soft);color:var(--teal);border-color:var(--teal)}.steps{margin:24px 0}.steps>div{display:flex;gap:15px;margin:15px 0;align-items:flex-start}.steps>div>b{display:flex;align-items:center;justify-content:center;border-radius:11px;background:var(--blue-soft);color:var(--blue);width:35px;height:35px;flex-shrink:0;font-size:12px}.steps>div>section{border-bottom:1px solid var(--border);padding-bottom:13px;flex:1}.steps h4{font-size:16px;margin:0 0 3px}.steps p{color:var(--muted);font-size:13px;line-height:1.6;margin:0}.layers{display:grid;gap:11px;margin:24px 0}.layers>div{display:flex;gap:16px;padding:17px;border:1px solid var(--border);border-radius:12px;background:var(--paper)}.layer-number{font-weight:900;color:var(--teal);font-size:12px}.layers h4{margin:0;font-size:16px}.layers p{margin:4px 0 0;font-size:13px;line-height:1.55;color:var(--muted)}.agent-loop{background:var(--paper);border:1px solid var(--border);border-radius:16px;padding:20px;display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:10px;margin:25px 0}.loop-step{border-radius:9px;padding:9px 12px;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:800}.agent-loop>span{color:var(--teal)}.agent-loop>p{width:100%;text-align:center;margin:5px 0 0;font-size:12px;color:var(--muted)}.evidence-ladder,.term-table{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:20px 0}.evidence-ladder>div,.term-table>div{background:var(--paper);border:1px solid var(--border);border-radius:11px;padding:15px}.evidence-ladder b,.term-table b{display:block;font-size:13px;color:var(--teal)}.evidence-ladder span,.term-table p{display:block;font-size:12px;color:var(--muted);margin:4px 0 0;line-height:1.5}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:20px}.stats-grid>div{background:var(--soft);padding:12px;border-radius:10px}.stats-grid small{display:block;color:var(--muted);font-size:11px}.stats-grid strong{font-size:22px;letter-spacing:-.04em}.specimen{background:linear-gradient(125deg,var(--paper),var(--soft))}.specimen-top{display:flex;justify-content:space-between;color:var(--teal);font-size:10px;font-weight:900;letter-spacing:.09em}.specimen h4{font-size:25px;letter-spacing:-.04em;margin:14px 0 17px}.specimen-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}.specimen-grid>div{background:var(--paper);border-radius:10px;padding:12px}.specimen-grid small{display:block;font-size:10px;color:var(--muted)}.specimen-grid b{font-size:19px}.capstones{display:grid;gap:12px;margin:25px 0}.capstones>div{padding:18px;border:1px solid var(--border);background:var(--paper);border-radius:13px}.capstones span{font-size:10px;color:var(--teal);font-weight:900;letter-spacing:.1em}.capstones h4{font-size:16px;margin:6px 0}.capstones p{font-size:13px;color:var(--muted);line-height:1.58;margin:0}.final-framework{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:25px 0}.final-framework>div{padding:9px 11px;flex:1 1 118px;border:1px solid var(--border);border-radius:10px;background:var(--paper)}.final-framework b{display:block;font-size:11px;color:var(--teal)}.final-framework small{display:block;font-size:10px;color:var(--muted)}.final-framework>span{color:var(--teal);font-weight:900}.takeaway{background:var(--teal-soft);border-color:var(--teal);padding:18px 22px;margin:28px 0}.takeaway span{color:var(--teal);font-size:10px;letter-spacing:.15em;font-weight:900}.takeaway p{margin:4px 0 0;font-weight:700;font-size:16px;line-height:1.5}.checkpoint{margin:27px 0}.checkpoint-title{display:flex;justify-content:space-between;gap:12px;align-items:center;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:15px}.checkpoint-title h3{font-size:20px;margin:2px 0}.quiz-question{padding:7px 0 14px;border-bottom:1px solid var(--border)}.quiz-question:last-of-type{border-bottom:0}.question-text{font-weight:750;font-size:14px;line-height:1.55}.options{display:grid;gap:7px}.option{display:flex;align-items:center;text-align:left;gap:9px;width:100%;border:1px solid var(--border);border-radius:10px;background:var(--paper);color:var(--ink);padding:10px 12px;font-size:13px;line-height:1.45}.option:hover{border-color:var(--blue)}.option .option-letter{font-weight:900;color:var(--muted);background:var(--soft);min-width:23px;height:23px;text-align:center;line-height:23px;border-radius:6px;font-size:11px}.option.correct{border-color:var(--teal);background:var(--teal-soft)}.option.incorrect{border-color:#d58579;background:color-mix(in srgb,#e37b68 9%,var(--paper))}.feedback{font-size:12px;line-height:1.55;margin:7px 0 0;color:var(--muted);min-height:0}.feedback[data-status="right"]{color:var(--teal)}.feedback[data-status="wrong"]{color:var(--amber)}.print-answer{display:none}.complete-btn{margin-top:20px;padding:11px 17px;border-radius:12px;background:var(--blue);border:1px solid var(--blue);color:#fff;font-size:13px;font-weight:800}.complete-btn[aria-pressed="true"]{background:var(--teal);border-color:var(--teal);color:#fff}.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:27px}.lesson-nav a{font-size:12px;font-weight:800;text-decoration:none}.glossary-section,.sources-section{border-top:1px solid var(--border);padding:52px 0 45px;scroll-margin-top:90px}.glossary-section h2,.sources-section h2{font-size:39px;letter-spacing:-.05em;line-height:1.2;margin:6px 0 11px}.glossary-section>p,.sources-section>p{color:var(--muted);font-size:15px}.glossary-search{width:100%;border:1px solid var(--border);background:var(--paper);color:var(--ink);padding:14px 15px;border-radius:12px;margin:15px 0 21px;font-size:14px}.glossary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.glossary-item{background:var(--paper);border:1px solid var(--border);padding:14px;border-radius:11px}.glossary-item strong{font-size:13px}.glossary-item p{margin:4px 0 0;color:var(--muted);font-size:12px;line-height:1.5}.glossary-item.hidden,.chapter.hidden{display:none}.sources-section ol{padding:0;list-style:none}.sources-section li{display:flex;gap:15px;border-bottom:1px solid var(--border);padding:14px 0}.ref-number{font-size:13px;font-weight:900;color:var(--teal)}.sources-section li strong{font-size:13px}.sources-section li p{font-size:12px;color:var(--muted);margin:4px 0}.sources-section li a{display:block;font-size:11px;overflow-wrap:anywhere;line-height:1.45}.course-end{padding:33px 0 50px;color:var(--muted);font-size:12px;border-top:1px solid var(--border)}.course-end strong{color:var(--ink)}.floating-top{position:fixed;right:20px;bottom:18px;display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:50%;background:var(--paper);color:var(--ink);box-shadow:var(--shadow);z-index:45}.floating-top.visible{display:block}.no-results{display:none;color:var(--muted);font-size:13px}.mobile-overlay{display:none}
@media(max-width:1050px){.shell{grid-template-columns:255px minmax(0,1fr)}.sidebar{padding-left:10px;padding-right:10px}.reading{padding-left:28px;padding-right:28px}.hero h2{font-size:53px}}
@media(max-width:760px){.shell{display:block}.sidebar{position:fixed;left:0;top:0;bottom:0;width:min(325px,85vw);height:100dvh;transform:translateX(-105%);transition:transform .22s;z-index:100;box-shadow:var(--shadow)}body.nav-open .sidebar{transform:translateX(0)}.mobile-overlay{position:fixed;inset:0;background:#0713239e;z-index:90}body.nav-open .mobile-overlay{display:block}.topbar{padding:9px 16px;min-height:60px;padding-top:max(9px,env(safe-area-inset-top))}.topbar .toggle-nav{display:inline-flex}.topbar .top-title{font-size:10px;letter-spacing:.06em}.progress-caption{font-size:10px}.reading{padding:0 18px 70px}.hero{padding:45px 0 30px}.hero h2{font-size:47px}.hero-intro{font-size:17px}.hero-art{padding:22px;gap:8px}.hero-art h3{font-size:20px}.hero-art p{font-size:12px}.orbit{transform:scale(.7);transform-origin:center right;margin-left:-45px;margin-right:-20px}.roadmap{gap:9px}.roadmap-card{padding:14px;min-height:164px}.roadmap-card b{font-size:15px}.chapter{padding-top:33px}.chapter h2{font-size:37px}.chapter-subtitle{font-size:16px;margin-bottom:32px}.chapter-content h3{font-size:21px}.graphic,.interactive,.note,.try,.myth,.takeaway,.checkpoint,.specimen{padding:18px}.concept-grid,.comparison,.glossary-grid{grid-template-columns:1fr}.fields{grid-template-columns:1fr}.specimen-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stats-grid strong{font-size:19px}.agent-loop{gap:6px}.loop-step{font-size:10px}.lesson-nav{gap:15px}.final-framework>div{flex:1 1 120px}.final-framework>span{display:none}.graphic svg{max-height:240px}.chapter-kicker{font-size:9px}}
@media(max-width:380px){.hero h2{font-size:42px}.orbit{display:none}.roadmap{grid-template-columns:1fr}.topbar .top-title{font-size:9px}}
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@page{size:A4;margin:16mm 15mm 17mm}
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