/* History / Chapter 01. Additive presentation: original journal layouts retained. */
.main-nav{gap:17px}.main-nav a[data-history-link]{color:var(--rose);font-weight:600}.nada .main-nav a[data-history-link]{color:var(--ink)}
.history-hero{display:grid;grid-template-columns:1.04fr 1fr;gap:6%;align-items:center;padding-block:64px 38px}.history-hero h1{font-size:clamp(44px,5.4vw,82px);line-height:1.06;margin:20px 0 28px}.history-hero h1 em{color:var(--rose)}.nada .history-hero h1 em{color:#526e5e}.history-hero .lede{font-size:16px;line-height:1.9;color:var(--muted);max-width:540px}.history-art{position:relative;background:var(--soft);overflow:hidden;border:1px solid var(--line);padding:0}.history-art svg{display:block;width:100%;height:auto}.history-art figcaption{font-size:10px;line-height:1.8;padding:13px 20px;border-top:1px solid var(--line);color:var(--muted);background:var(--paper)}.history-art .diagram-label{font:10px Arial,sans-serif;letter-spacing:1.5px}.history-art .diagram-number{font:50px Georgia,serif}.history-art .diagram-note{font:14px Georgia,serif}.history-art .svg-plain{font:12px Arial,sans-serif;letter-spacing:.3px}
.history-intro-band{display:grid;grid-template-columns:.55fr 1fr;gap:7%;padding-block:28px;margin-bottom:15px;border-block:1px solid var(--line)}.history-intro-band p{font-size:13px;color:var(--muted)}.history-intro-band strong{font:25px/1.4 var(--serif);font-weight:400}.history-feature{margin-block:34px 12px;border-block:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:8%;padding-block:32px}.history-feature h2{font-size:39px;margin-top:12px}.history-feature p:not(.eyebrow){font-size:14px;color:var(--muted)}.history-feature .actions{margin-top:17px}.history-feature small{font-size:11px;color:var(--muted)}
.history-series{padding-block:62px}.history-series .section-head{margin-bottom:32px}.history-chapters{display:grid;grid-template-columns:1fr 1fr;gap:20px}.history-chapter{border:1px solid var(--line);padding:30px;position:relative;min-width:0;background:var(--white)}.history-chapter:first-child{grid-column:1/-1;background:var(--dark);color:var(--paper);display:grid;grid-template-columns:.12fr 1fr .44fr;gap:32px;align-items:center}.history-chapter .number{font:36px/1.2 var(--serif);color:var(--accent);margin-bottom:14px}.history-chapter h3{font-size:31px;letter-spacing:-.03em;margin:8px 0 14px}.history-chapter p{font-size:13px;color:var(--muted)}.history-chapter:first-child p{color:#dbdfd3}.history-chapter:first-child .eyebrow,.history-chapter:first-child .number{color:#dbc393}.history-chapter:first-child .button{background:var(--paper);color:var(--ink);border-color:var(--paper)}.chapter-state{font-size:9px;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted)}.history-chapter:first-child .chapter-state{color:#e3d5b8}.history-chapter.planned{background:transparent}.history-path{display:flex;gap:18px;flex-wrap:wrap;align-items:center;padding-block:22px;font-size:11px;letter-spacing:.4px;color:var(--muted)}.history-path a{border-bottom:1px solid var(--line);padding:6px 0}.history-path strong{color:var(--ink);font-weight:400}
.history-cover-strip{background:var(--soft);padding:28px 32px;display:flex;gap:27px;align-items:center;margin-bottom:20px}.history-cover-strip img{width:78px;height:92px;object-fit:cover;object-position:72% 30%;flex-shrink:0;border:4px solid var(--paper)}.nada .history-cover-strip img{object-position:60% 30%}.history-cover-strip p{font-size:13px;max-width:750px;color:var(--muted)}.history-cover-strip .lead-question{font:23px/1.45 var(--serif);margin-bottom:8px;color:var(--ink)}.history-article .article-side{max-height:calc(100vh - 130px);overflow:auto}.history-article .article-body h2{font-size:clamp(32px,3.1vw,44px)}.history-article .article-body p{font-size:15px;line-height:1.95}.history-article .article-body .eyebrow{font-size:10px;margin-bottom:13px}.history-article .article-body sup{white-space:nowrap}.history-article .source-list li{font-size:12px;line-height:1.8;padding:8px 0}.history-article .source-list a{text-decoration:underline}.history-article .source-list small{display:block;color:var(--muted);margin-top:4px}.history-article .source-list{border-top:1px solid var(--line);margin-top:50px}.history-article section:target{scroll-margin-top:130px}.history-divider{margin:40px 0;padding:21px 25px;border-left:2px solid var(--accent);background:var(--soft);font:24px/1.5 var(--serif)}
.history-model{margin:28px 0 10px;border:1px solid var(--line);background:var(--white);padding:24px}.history-model h3{font:25px/1.25 var(--serif);margin-bottom:14px}.history-model p{font:12px/1.8 var(--sans)!important;margin:12px 0}.history-model svg{display:block;width:100%;height:auto}.history-model label{display:block;font-size:12px;margin-block:14px 6px}.history-model input[type=range]{width:100%;accent-color:var(--rose);min-height:44px}.history-model output{display:block;font-size:12px;min-height:48px;line-height:1.8}.history-model .model-scale{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:var(--muted)}.history-model .model-caveat{font-size:11px!important;color:var(--muted);padding-top:12px;border-top:1px solid var(--line)}.history-model .model-buttons{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}.history-model button{background:transparent;color:var(--ink);border:1px solid var(--line);min-height:44px;padding:10px 14px;font-size:12px}.history-model button[aria-pressed=true]{background:var(--ink);color:var(--paper);border-color:var(--ink)}.formation-panel{background:var(--soft);padding:22px}.formation-panel h4{font:26px/1.35 var(--serif);letter-spacing:-.4px;margin:0 0 10px}.formation-panel .text-link{font-size:9px}.formation-heading{display:flex;align-items:center;gap:16px}.formation-number{font:48px var(--serif);color:var(--accent)}
.history-check{margin-block:28px;border-top:1px solid var(--line);padding-top:28px}.history-check summary{font:22px/1.4 var(--serif);cursor:pointer;min-height:44px}.history-check p{font-size:14px;color:var(--muted);margin-top:16px}.history-next{display:grid;grid-template-columns:1fr 1fr;gap:35px;margin-block:45px;padding:30px;background:var(--soft)}.history-next h3{font-size:29px;margin:12px 0 18px}.history-next p{font-size:13px;color:var(--muted)}.history-reference{font-size:12px;padding:20px;border:1px solid var(--line);margin-top:26px}.history-reference strong{font:23px/1.4 var(--serif);display:block;margin:10px 0}.history-reference a{text-decoration:underline}.history-section-link{display:block;margin-top:25px;padding:18px 20px;border:1px solid var(--line);font-size:13px;line-height:1.8;color:var(--muted)}.history-section-link strong{font:23px var(--serif);display:block;margin-bottom:5px;color:var(--ink)}
@media(min-width:1151px) and (max-width:1400px){.header-inner{gap:16px}.main-nav{gap:12px}.main-nav a{font-size:9px}.nav-search{font-size:9px}}
@media(max-width:1000px){.history-hero{gap:4%;padding-top:42px}.history-hero h1{font-size:50px}.history-hero .lede{font-size:14px}.history-chapter:first-child{grid-template-columns:.1fr 1fr;gap:20px}.history-chapter:first-child .chapter-open{grid-column:2}.history-article .article-side{max-height:none;overflow:visible}.history-chapter h3{font-size:28px}}
@media(max-width:650px){.history-hero{grid-template-columns:1fr;gap:30px;padding-top:33px;padding-bottom:28px}.history-hero h1{font-size:clamp(40px,10vw,58px);margin:18px 0 23px}.history-hero .lede{font-size:14px}.history-intro-band{grid-template-columns:1fr;gap:14px;padding-block:22px}.history-intro-band strong{font-size:24px}.history-intro-band p{font-size:12px}.history-art{max-width:480px;width:100%;margin:auto}.history-chapters{grid-template-columns:1fr;gap:16px}.history-chapter{padding:24px}.history-chapter:first-child{grid-template-columns:1fr;gap:9px}.history-chapter:first-child .chapter-open{grid-column:auto;margin-top:12px}.history-chapter:first-child .number{margin:0}.history-series{padding-block:39px}.history-cover-strip{padding:18px;gap:17px;align-items:flex-start}.history-cover-strip img{width:55px;height:70px}.history-cover-strip .lead-question{font-size:20px}.history-cover-strip p{font-size:11px}.history-article .article-body p{font-size:14px}.history-next{grid-template-columns:1fr;padding:24px;gap:28px}.history-feature{grid-template-columns:1fr;gap:18px;margin-top:24px}.history-feature h2{font-size:35px}.history-model{padding:18px}.history-model .model-buttons{display:grid;grid-template-columns:1fr 1fr}.history-model button{padding:10px 7px;font-size:11px}.formation-panel{padding:18px}.history-path{gap:9px;font-size:10px}.history-model output{min-height:64px}.history-model .svg-plain{font-size:13px}.history-reference strong{font-size:21px}}
@media(prefers-reduced-motion:reduce){.history-art *,.history-model *{animation:none!important;transition:none!important}}
@media print{.history-hero{display:block}.history-art{max-width:430px;break-inside:avoid}.history-model{break-inside:avoid}.model-buttons,.history-model input,.history-model label,.history-model output,.history-path,.history-next,.chapter-open{display:none!important}.history-chapter{break-inside:avoid}.history-chapter:first-child{display:block;background:white;color:black}.history-chapter:first-child p,.history-chapter:first-child .eyebrow,.history-chapter:first-child .number{color:black}.formation-panel[hidden]{display:block!important;margin-block:12px}}