[hidden]{display:none!important}:root{--ink:#23332f;--paper:#faf8f3;--gold:#9a7043;--muted:#56645f;--line:#d9d6cb;--text-scale:1}*{box-sizing:border-box}html{scroll-padding-top:95px;scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-underline-offset:4px}button,select{font:inherit}a,button,select,summary,input{touch-action:manipulation}a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--gold);outline-offset:5px}button,a,select{ -webkit-tap-highlight-color:transparent}.skip{position:fixed;left:16px;top:-100px;padding:15px;background:var(--ink);color:white;z-index:100}.skip:focus{top:12px}.site-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px max(24px,calc((100vw - 1240px)/2));background:rgba(250,248,243,.98);border-bottom:1px solid var(--line);min-height:78px}.brand{display:flex;gap:12px;align-items:center;text-decoration:none}.brand b{font:44px/1 Georgia,serif}.brand span{font-size:10px;letter-spacing:1px;line-height:1.45;border-left:1px solid var(--ink);padding-left:12px}.pdf-link{font-size:14px;padding:12px 0}.progress{position:sticky;top:78px;height:3px;z-index:11;background:var(--line)}.progress span{display:block;height:100%;background:var(--gold);width:0;transition:width .15s linear}main{max-width:1240px;margin:auto;padding:0 30px}.reader-hero{display:grid;grid-template-columns:1fr 235px;align-items:center;gap:70px;padding:62px 0 55px;max-width:1000px;margin:auto}.eyebrow{font-size:11px!important;letter-spacing:1.6px;font-weight:700;color:var(--gold);line-height:1.5!important;margin:0 0 16px!important}h1{font:clamp(38px,4.8vw,63px)/1.06 Georgia,serif;letter-spacing:-1.5px;margin:0 0 22px}h2{font:clamp(32px,3vw,44px)/1.1 Georgia,serif;letter-spacing:-.8px;margin:0 0 24px}h3{font-size:15px;letter-spacing:.3px;margin:28px 0 8px}.deck{font-size:calc(22px * var(--text-scale));line-height:1.45;color:var(--muted);margin:0 0 25px}.reader-hero img{width:100%;height:auto;box-shadow:8px 15px 27px #23332f28;transform:rotate(2deg)}.reader-hero>div>p:not(.eyebrow){font-size:18px;line-height:1.5}.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:14px 21px;text-decoration:none;font-size:15px;font-weight:bold;border:1px solid var(--ink);line-height:1.4}.primary{background:var(--ink);color:white}.secondary{background:transparent}.utility{border-block:1px solid var(--line);padding:18px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:14px}.utility>p{margin:0;font-weight:bold}.utility>div{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.utility button{padding:12px 0;border:0;background:none;color:inherit;text-decoration:underline;text-underline-offset:4px;cursor:pointer}.utility-note{flex-basis:100%;font-size:12px!important;color:var(--muted);font-weight:normal!important;min-height:1.3em}.size-label{display:flex;align-items:center;gap:8px}.size-label select{min-height:44px;background:var(--paper);border:1px solid var(--line);padding:5px 8px;color:var(--ink)}.reader-layout{display:grid;grid-template-columns:240px minmax(0,760px);gap:66px;padding-top:35px;justify-content:center}.contents{position:sticky;top:110px;align-self:start;max-height:calc(100dvh - 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/* Subject-specific diagrams support the reading, without new animation dependencies. */
.opening-photo{grid-column:1/-1;margin:0}
.opening-photo img{display:block;width:100%;aspect-ratio:2.3;object-fit:cover;box-shadow:none;transform:none}
.opening-photo figcaption{margin-top:10px}
.chapter-visual{margin:26px 0 30px;padding:18px 0;border-block:1px solid var(--line)}
.chapter-visual img{display:block;width:100%;height:auto}
.diagram-caption{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:12px;font-size:14px;line-height:1.5;color:var(--ink)}.diagram-caption b{display:block;font-size:12px;margin-bottom:3px;overflow-wrap:anywhere}
.scenario-photo{margin:26px 0}.photo-window{aspect-ratio:2.8;overflow:hidden}.photo-window img{width:100%;height:100%;object-fit:cover;object-position:50% 56%}.scenario-photo.hidden img{object-position:50% 50%}
@media(max-width:650px){.diagram-caption{grid-template-columns:1fr;gap:7px}.diagram-caption b{display:inline;font-size:13px;margin-right:5px}.photo-window{aspect-ratio:2.1}}

@media(max-width:650px){.reader-hero .opening-photo{margin:28px 0 0}.reader-hero .opening-photo img{display:block;aspect-ratio:1.65}.chapter-visual{margin:22px 0;padding:14px 0}}

.eyebrow{color:#805a33}.opening-photo figcaption,.scenario-photo figcaption{font-size:13px;line-height:1.5}