:root{
  --bg:#101719;--shell:#151d20;--paper:#192125;--text:#e7eae5;--muted:#a8b1af;--muted2:#788886;--rule:#2d3a3c;--accent:#d6b875;--accent-deep:#413b2e;--hover:#263134;--shadow:0 24px 66px rgba(0,0,0,.2);
  --sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  --serif:"Iowan Old Style",Georgia,"Times New Roman",serif;
  color-scheme:dark;
}
:root[data-theme="light"]{--bg:#f4f4ef;--shell:#fafaf6;--paper:#fffefa;--text:#26312f;--muted:#526562;--muted2:#71817d;--rule:#e0e5df;--accent:#88662d;--accent-deep:#f2e8d1;--hover:#eef1eb;--shadow:0 24px 66px rgba(26,37,32,.1);color-scheme:light}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:94px}
body{margin:0;min-width:0;background:var(--bg);color:var(--text);font-family:var(--sans);overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button[disabled]{opacity:.4;cursor:default}
.skip-link{position:absolute;z-index:100;left:12px;top:-90px;background:var(--paper);padding:12px}.skip-link:focus{top:12px}
.reading-progress{position:fixed;top:0;left:0;z-index:70;width:0;height:3px;background:var(--accent);transition:width .08s linear}
.site-header{height:70px;position:sticky;top:0;z-index:50;background:var(--shell);background:color-mix(in srgb,var(--shell) 93%,transparent);border-bottom:1px solid var(--rule);display:flex;align-items:center;gap:12px;padding:0 max(14px,env(safe-area-inset-left));backdrop-filter:blur(18px)}
.brand{display:flex;gap:10px;align-items:center;white-space:nowrap;min-width:0}.brand-symbol{width:39px;height:39px;border:1px solid var(--accent);border-radius:10px;display:grid;place-items:center;font:700 26px var(--serif);letter-spacing:-2px;color:var(--accent)}.brand-dot{margin-left:-5px}.brand-name{font-size:15px;letter-spacing:-.4px}.brand-name small{display:block;color:var(--muted2);font-size:8px;font-weight:700;letter-spacing:1.8px;margin-top:2px}.header-spacer{flex:1}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:7px;background:transparent;border:1px solid transparent;border-radius:10px;color:var(--text);font-size:24px}.icon-btn:hover,.search-trigger:hover{background:var(--hover)}.nav-mobile{display:inline-flex}
.search-trigger{min-height:44px;border:1px solid var(--rule);border-radius:12px;background:transparent;color:var(--muted);padding:0 12px;display:flex;align-items:center;gap:9px;font-size:14px}.search-trigger>span:first-child{font-size:24px}.search-trigger-text{display:none}.search-trigger kbd{display:none;border:1px solid var(--rule);border-radius:4px;padding:3px 5px;font-size:10px}
.app-layout{min-width:0;display:grid;grid-template-columns:minmax(0,1fr)}
.overlay{position:fixed;z-index:54;inset:70px 0 0;background:rgba(0,0,0,.6);backdrop-filter:blur(3px)}.overlay[hidden]{display:none}
.sidebar{position:fixed;top:70px;bottom:0;left:0;width:min(89vw,330px);z-index:55;background:var(--shell);border-right:1px solid var(--rule);transform:translateX(-102%);transition:none;overflow-y:auto;overscroll-behavior:contain}.app-ready .sidebar{transition:transform .2s ease}.sidebar.is-open{transform:translateX(0)}.sidebar-top{padding:25px 19px 16px;display:flex;justify-content:space-between;align-items:flex-start}.sidebar-top strong{display:block;margin-top:7px;font-size:15px}.eyebrow,.kicker{font-size:10px;letter-spacing:2px;color:var(--accent);font-weight:750}.toc-group{padding:3px 10px 12px}.toc-group-title{margin:17px 10px 8px;font-size:10px;font-weight:750;color:var(--muted2);letter-spacing:1.7px;text-transform:uppercase}.toc-item{display:flex;align-items:flex-start;gap:9px;text-align:left;border:0;background:transparent;border-radius:9px;color:var(--muted);width:100%;padding:10px 9px;min-height:44px;line-height:1.45;font-size:13px}.toc-item:hover,.toc-item.active{color:var(--text);background:var(--hover)}.toc-item.active{border-left:2px solid var(--accent)}.toc-num{flex:none;font-size:11px;letter-spacing:.5px;color:var(--muted2);padding-top:2px}.toc-item.active .toc-num{color:var(--accent)}.sidebar-foot{padding:20px;color:var(--muted2);font-size:12px;line-height:1.6;border-top:1px solid var(--rule)}
.reader{width:100%;min-width:0;max-width:830px;padding:0 18px 70px;margin:0 auto}
.book-intro{margin:0 0 21px;padding:17px 0 15px;border-bottom:1px solid var(--rule)}.book-intro-title{font-family:var(--serif);font-size:clamp(21px,4vw,28px);line-height:1.12;letter-spacing:-.5px;margin:9px 0 8px}.book-intro-title em{font-weight:400;color:var(--accent)}.book-intro-text{font-size:clamp(13px,2vw,14px);line-height:1.6;max-width:680px;color:var(--muted);margin:0 0 13px}.book-stats{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 10px}.book-stat{padding:7px 11px;border:1px solid var(--rule);border-radius:20px;color:var(--muted);font-size:12px}.book-stat strong{color:var(--text);font-variant-numeric:tabular-nums}.edition-notice{color:var(--muted2);font-size:11px;line-height:1.55;margin:0}
.chapter{min-height:350px}.chapter-eyebrow{font-size:11px;font-weight:700;letter-spacing:1.8px;color:var(--accent);text-transform:uppercase;margin-bottom:14px}.chapter h1{font-family:var(--serif);font-size:clamp(33px,7vw,45px);line-height:1.13;letter-spacing:-1.4px;margin:0 0 18px;text-wrap:balance;font-weight:700}.chapter-lede{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted2);font-size:12px;padding-bottom:17px;border-bottom:1px solid var(--rule)}.chapter-lede span:before{content:'·';margin-right:12px}.chapter-lede span:first-child:before{display:none}
.local-toc{margin:17px 0 22px;padding:0;border:1px solid var(--rule);border-radius:12px;overflow:hidden}.local-toc>summary{cursor:pointer;padding:13px 15px;font-size:13px;font-weight:700;min-height:44px;color:var(--muted)}.local-toc ol{margin:0;padding:6px 22px 15px 36px;border-top:1px solid var(--rule)}.local-toc li{padding:6px 0;font-size:14px;color:var(--muted)}.local-toc a:hover{color:var(--accent)}
.chapter-text{font-family:var(--serif);font-size:clamp(17px,2.3vw,19px);line-height:1.85;letter-spacing:.07px;overflow-wrap:anywhere}.chapter-text p{margin:0 0 23px}.chapter-text h2{font-family:var(--sans);font-size:clamp(21px,4vw,27px);line-height:1.28;letter-spacing:-.6px;font-weight:720;margin:46px 0 21px;scroll-margin-top:90px}.chapter-text h2:first-child{margin-top:12px}.chapter-text h3{font-family:var(--sans);font-size:20px;margin:35px 0 14px}.chapter-text .table-scroller{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;margin:28px 0 34px;border:1px solid var(--rule);border-radius:10px}.chapter-text table{width:100%;border-collapse:collapse;min-width:520px;font-family:var(--sans);font-size:13px;line-height:1.6}.chapter-text th{text-align:left;background:var(--hover);font-weight:720}.chapter-text td,.chapter-text th{vertical-align:top;padding:13px 14px;border-bottom:1px solid var(--rule)}.chapter-text tr:last-child td{border-bottom:0}.chapter-text td{color:var(--muted)}
.bibliography{margin:52px 0 30px;padding:24px 0 16px;border-top:1px solid var(--rule)}.bibliography h2{font-size:22px;line-height:1.3;letter-spacing:-.5px;margin:0 0 8px}.bibliography>p{font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 22px}.source-entry{border-bottom:1px solid var(--rule);padding:12px 0;display:flex;gap:14px;align-items:baseline}.source-counter{flex:none;color:var(--accent);font-size:12px}.source-entry a{display:block;font-size:14px;line-height:1.5;text-decoration:underline;text-decoration-color:var(--muted2);text-underline-offset:3px}.source-entry a:hover{color:var(--accent)}.source-date{display:block;color:var(--muted2);font-size:12px;margin-top:5px}
.chapter-navigation{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:25px 0 35px}.next-chapter{border:1px solid var(--rule);border-radius:13px;background:var(--paper);text-align:left;min-height:100px;padding:16px;color:var(--text)}.next-chapter:hover{border-color:var(--accent)}.next-chapter span{display:block;color:var(--muted2);font-size:11px;margin-bottom:8px}.next-chapter strong{font-size:13px;line-height:1.5;display:block}.next-chapter:last-child{text-align:right}.reader-footer{padding-top:18px;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;color:var(--muted2);font-size:11px;line-height:1.5}
.section-panel{display:none}.loader{min-height:100px;padding:28px 0;color:var(--muted)}
.search-dialog{width:min(94vw,720px);max-height:min(84dvh,760px);padding:0;border:1px solid var(--rule);border-radius:18px;background:var(--paper);color:var(--text);box-shadow:var(--shadow);overscroll-behavior:contain}.search-dialog::backdrop{background:rgba(0,0,0,.7);backdrop-filter:blur(4px)}.search-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px 18px 5px}.search-head h2{font-size:17px;margin:0}.search-field{display:flex;align-items:center;gap:9px;margin:13px 18px 0;padding:0 12px;min-height:49px;border:1px solid var(--rule);border-radius:12px}.search-field span{font-size:24px;color:var(--muted)}.search-field input{background:transparent;border:0;outline:0!important;color:var(--text);width:100%;font-size:16px;min-height:47px}.search-hint{color:var(--muted2);font-size:12px;line-height:1.6;margin:10px 19px 12px}.search-results{padding:0 12px 16px;max-height:52dvh;overflow-y:auto}.search-result{display:block;border:0;background:transparent;color:var(--text);width:100%;text-align:left;border-radius:12px;padding:14px 11px;border-bottom:1px solid var(--rule);min-height:72px}.search-result:hover{background:var(--hover)}.search-result small{display:block;color:var(--accent);font-size:11px;letter-spacing:1px;margin-bottom:4px}.search-result strong{font-size:14px;line-height:1.4}.search-result span{display:block;font-size:12px;line-height:1.5;color:var(--muted);margin-top:5px}.search-empty{padding:25px 12px;color:var(--muted);line-height:1.65}
@media(min-width:650px){.reader{padding:0 34px 80px}.site-header{padding-left:25px;padding-right:25px}.search-trigger-text{display:inline}.search-trigger kbd{display:inline}.book-intro{padding:19px 0 17px}.sidebar{width:300px}}
@media(min-width:980px){.app-layout{grid-template-columns:268px minmax(0,1fr)}.nav-mobile,.overlay{display:none!important}.sidebar{position:sticky;top:70px;align-self:start;height:calc(100dvh - 70px);width:auto;transform:none;overflow-y:auto}.reader{padding:0 40px 90px;max-width:920px}.site-header{padding-left:30px;padding-right:30px}.chapter-text{font-size:18px}}
@media(min-width:1350px){.app-layout{grid-template-columns:280px minmax(0,1fr) 215px}.section-panel{display:block;position:sticky;align-self:start;top:70px;height:calc(100dvh - 70px);overflow-y:auto;padding:45px 22px 22px 5px}.section-panel nav{margin:15px 0 28px;display:grid;gap:5px}.section-panel a{display:block;font-size:12px;line-height:1.5;border-left:1px solid var(--rule);padding:8px 9px;color:var(--muted)}.section-panel a:hover{color:var(--accent);border-left-color:var(--accent)}.utility-btn{display:block;width:100%;text-align:left;min-height:44px;padding:10px 8px;border:0;border-top:1px solid var(--rule);background:transparent;color:var(--muted);font-size:12px}.utility-btn:hover{color:var(--text)}.reader{max-width:870px}}
@media print{*{box-shadow:none!important}.site-header,.sidebar,.section-panel,.reading-progress,.search-dialog,.chapter-navigation,.local-toc,.book-intro,.reader-footer{display:none!important}.app-layout{display:block}.reader{max-width:none;padding:0 8mm}.chapter-text{font-size:11pt;line-height:1.5;color:#111}.chapter h1{font-size:25pt;color:#111}.chapter-text h2{font-size:16pt;break-after:avoid}.chapter-text p{orphans:3;widows:3}.chapter-text .table-scroller{overflow:visible}.chapter-text table{min-width:0;font-size:9pt}.bibliography{color:#111}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* Separate, lazily loaded coverage report; no raw transcript text on public pages. */
.text-link{background:none;border:0;color:var(--accent);text-decoration:underline;text-underline-offset:4px;min-height:44px;text-align:left;padding:8px 0;cursor:pointer}
.coverage-dialog{width:min(96vw,760px);max-height:min(92dvh,850px)}
.coverage-intro{font-size:14px;line-height:1.7;color:var(--text);margin:8px 0 10px}
.coverage-results{max-height:min(48dvh,460px);overflow-y:auto;overscroll-behavior:contain;margin:14px 0}
.coverage-row{border-top:1px solid var(--rule);padding:12px 2px;min-width:0}
.coverage-row-text{display:grid;gap:5px;overflow-wrap:anywhere}
.coverage-row-text>a{font-weight:600;line-height:1.4;color:var(--text)}
.coverage-row-text>a:hover{text-decoration:underline;color:var(--accent)}
.coverage-row-text>small{font-size:11px;color:var(--muted2);line-height:1.45}
.coverage-count{font-size:12px;color:var(--muted)}
.more-button{display:block;min-height:44px;border:1px solid var(--rule);border-radius:10px;background:var(--hover);color:var(--text);width:100%;font-weight:600;margin-top:12px}
.more-button[hidden]{display:none}
/* Science editorial notes: keep references readable on narrow screens. */
.bibliography h2:not(:first-child){margin-top:32px}
.source-entry>div{min-width:0;overflow-wrap:anywhere}
.source-entry .research-summary,.source-entry .research-limits{font-size:13px;line-height:1.75;color:var(--muted);margin:9px 0 0;max-width:74ch}
.source-entry .research-limits{color:var(--muted2)}