/* An editorial atlas: warm paper, botanical ink, and restrained scientific contours. */
:root{color-scheme:light;--ink:#173d40;--deep:#0c2c32;--muted:#596863;--blue:#1c655d;--pale:#e8eee8;--line:#d5d8cd;--paper:#f6f3ec;--surface:#fffdf8;--nav:#0c2c32;--accent:#f1ebde;--copper:#915139;--display:Georgia,"Times New Roman",serif;--body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-family:var(--body);font-size:16px;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);line-height:1.65}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}
button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,textarea:focus-visible{outline:3px solid #1c655d;outline-offset:3px}
h1,h2,h3{color:inherit;font-family:var(--display);font-weight:400;letter-spacing:-.035em;line-height:1.15}h1{font-size:3.25rem;margin:0 0 24px}h2{font-size:1.75rem;margin:0 0 20px}h3{font-size:1.25rem;margin:0 0 12px}
p{margin:0 0 20px}small,.small{color:var(--muted);font-size:.875rem;line-height:1.65}[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-80px;left:16px;padding:12px 18px;background:var(--surface);border:2px solid var(--blue);border-radius:4px;z-index:100}.skip-link:focus{top:10px}
.eyebrow{margin:0 0 12px;color:var(--muted);font-size:.75rem;line-height:1.5;font-weight:600;letter-spacing:.085em;text-transform:uppercase}

/* Global navigation replaces the old fixed sidebar. */
.sidebar,.mobile-brand{display:none}
.topbar{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--line);background:rgba(246,243,236,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.global-header-inner{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) minmax(210px,250px);align-items:center;gap:0 20px;width:min(1200px,calc(100% - 64px));min-height:80px;margin:0 auto;padding:8px 0}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;color:var(--ink);font-family:var(--display);font-size:1.5rem;font-weight:400;line-height:1.2;letter-spacing:-.04em;white-space:nowrap}.brand:hover{text-decoration:none}
.brand-mark{display:block;width:36px;height:36px;flex-shrink:0;background:transparent;color:var(--ink)}.brand-mark>svg{display:block;width:36px;height:36px}.brand-name{display:block}.brand-sub{display:block;color:var(--muted);font-size:.65rem;letter-spacing:.1em}
.desktop-nav{display:flex;align-items:center;justify-content:center;gap:2px;min-width:0;flex-wrap:wrap}
.desktop-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 9px;color:var(--ink);font-size:.8125rem;line-height:1.3;white-space:nowrap;border-bottom:1px solid transparent;border-radius:0}
.desktop-nav a:hover{color:var(--ink);background:transparent;text-decoration:none}.desktop-nav a.active{color:var(--ink);font-weight:600;border-bottom-color:var(--copper)}
.header-search{min-width:0}.header-access{display:block;grid-column:3;grid-row:2;color:var(--muted);font-size:.6875rem;line-height:1.2;text-align:center;margin-top:2px}.private-access-note{font-size:.8rem;line-height:1.6;color:var(--muted)}
.mobile-menu{display:none}.mobile-nav{display:none}
.main{width:min(1200px,calc(100% - 64px));min-height:calc(100vh - 190px);margin:0 auto;padding:64px 0 100px}body[data-view="home"] .main{padding-top:0}.main>section{margin-bottom:56px}.main a,.article p{overflow-wrap:break-word}
.footer{display:flex;justify-content:space-between;gap:24px;width:min(1200px,calc(100% - 64px));margin:0 auto;padding:28px 0 36px;border-top:1px solid var(--line);color:var(--muted);font-size:.875rem}.footer span{font-size:.8125rem;line-height:1.65}.footer-brand{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-family:var(--display);font-size:1.375rem;font-weight:400;letter-spacing:-.025em}.footer p{margin:4px 0 0;font-size:.8125rem}.footer-links{display:grid;align-content:start;gap:2px;text-align:right}.footer-links>a{display:inline-flex;align-items:center;justify-content:flex-end;min-height:44px}.footer-links>span{display:block;margin-top:8px}

/* Search stays prominent, with one clear action. */
.search-form{position:relative;display:flex;align-items:center;min-width:0;min-height:54px;border:1px solid var(--line);border-radius:6px;background:var(--surface);box-shadow:0 2px 7px #1d1d1f04}
.search-form:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px #1c655d18}
.search-icon{flex-shrink:0;width:20px;height:20px;margin-left:18px;padding:0;color:var(--muted)}
.search-form input{flex:1;width:100%;min-width:0;min-height:44px;padding:12px 13px;border:none;border-radius:6px;background:transparent;color:var(--ink);outline:none}
.search-form input:focus-visible{outline:none}.search-form input::placeholder{color:var(--muted);opacity:1}
.search-form button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 20px;margin:4px;border:0;border-radius:4px;background:var(--blue);color:#fff;font-size:.875rem;font-weight:500;flex-shrink:0}.search-form button:hover{background:#124e48}
.topbar .search-form{min-height:50px;background:var(--surface);box-shadow:none;border-color:var(--line)}.topbar .search-form input{padding:9px 10px;font-size:.8125rem}.topbar .search-icon{margin-left:12px}.topbar .search-form button{padding:8px 10px;font-size:.8125rem}
.search-large{min-height:68px;border-radius:6px}.search-large input{font-size:1.0625rem;padding:18px 14px}.search-large .search-icon{width:22px;height:22px;margin-left:22px}.search-large button{min-height:50px;margin:7px;padding:13px 27px;border-radius:6px;font-size:1rem}
.search-examples{display:flex;flex-wrap:wrap;align-items:center;gap:4px 18px;color:var(--muted);font-size:.875rem;margin:16px 0 0}.search-examples a,.ask-examples a{display:inline-flex;align-items:center;min-height:44px}.search-examples span{color:var(--muted)}
.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:11px 22px;border:1px solid var(--line);border-radius:4px;line-height:1.4;font-size:.9375rem;font-weight:500;text-align:center;max-width:100%}
.primary{background:var(--blue);border-color:var(--blue);color:white;min-height:48px;padding:13px 26px}.primary:hover{background:#124e48;border-color:#124e48;color:white;text-decoration:none}
.secondary{background:var(--surface);color:var(--blue)}.secondary:hover{background:var(--surface);text-decoration:none}
.text-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;font-size:1rem}.text-link>span[aria-hidden]{font-size:1.125em;line-height:1}
.text-button,.icon-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 13px;border:0;border-radius:4px;background:transparent;color:var(--blue);font-size:.875rem;line-height:1.5}.text-button:hover,.icon-button:hover{background:var(--surface);text-decoration:none}

/* Homepage: a living atlas plate, followed by a compact editorial index. */
.home-hero{position:relative;isolation:isolate;overflow:hidden;width:100vw;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);margin-bottom:76px!important;padding:78px max(40px,calc((100vw - 1200px)/2)) 46px;min-height:740px;background:var(--deep);color:var(--paper)}
.home-hero::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,#0c2c32 0%,#0c2c32 40%,rgba(12,44,50,.96) 56%,rgba(12,44,50,.24) 80%,rgba(12,44,50,.08) 100%)}
.atlas-flow{position:absolute;inset:-12% -7% -12% 22%;z-index:0;pointer-events:none;opacity:.95}.atlas-flow>svg{display:block;width:100%;height:100%;overflow:visible}
.flow-ribbons-a,.flow-ribbons-b,.flow-contours{transform-box:fill-box;transform-origin:center;animation:none}.flow-contours{opacity:.6}
.hero-content{position:relative;z-index:2;max-width:710px}.home-hero .eyebrow{display:flex;align-items:center;gap:10px;color:#b4c9bc;font-size:.6875rem;letter-spacing:.15em;margin-bottom:26px}.hero-status-dot{width:6px;height:6px;flex-shrink:0;background:#cf9974;border-radius:50%}
.home-hero h1{margin:0 0 30px;font-size:clamp(4rem,7.5vw,7.25rem);font-weight:400;line-height:.99;letter-spacing:-.065em;max-width:730px}.home-hero h1 em{font-weight:400;color:#dda883}.accent-word{color:var(--copper)}
.hero-description{max-width:535px;margin:0;color:#e0e8de;font-size:1.1875rem;line-height:1.7;letter-spacing:-.012em}.hero-search{max-width:650px;margin-top:36px}.home-hero .search-form{background:var(--paper);border-color:var(--paper);box-shadow:0 10px 30px #061b2026}.home-hero .search-form input{color:var(--ink)}.home-hero .search-form button{background:var(--blue);color:var(--surface)}.home-hero .search-examples{color:#b4c9bc;gap:0 22px;margin-top:16px}.home-hero .search-examples a{color:#e1eadd;text-decoration:underline;text-underline-offset:5px;text-decoration-color:#7d9a8a}.home-hero .search-examples a:hover{color:white;text-decoration-color:white}
.hero-foot{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(230px,340px);align-items:end;gap:38px;margin-top:62px;padding-top:26px;padding-right:160px;border-top:1px solid #b4c9bc38}.hero-stats{display:flex;flex-wrap:wrap;gap:22px 40px}.hero-stat{display:flex;flex-direction:column;gap:6px}.hero-stat strong{color:var(--paper);font-family:var(--display);font-size:2.4375rem;font-weight:400;line-height:1.1;letter-spacing:-.045em;font-variant-numeric:tabular-nums}.hero-stat span{color:#b4c9bc;font-size:.6875rem;letter-spacing:.06em;line-height:1.5}.hero-note{margin:0;color:#b4c9bc;font-size:.75rem;line-height:1.7}
.motion-toggle{position:absolute;z-index:3;right:max(40px,calc((100vw - 1200px)/2));bottom:31px;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 13px;border:1px solid #b4c9bc50;border-radius:4px;background:#12353b;color:#e0e8de;font-size:.75rem;line-height:1.4}.motion-toggle:hover{background:#1b4548}.home-hero a:focus-visible,.motion-toggle:focus-visible{outline-color:var(--paper)}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px;margin-top:28px}.home-meta{color:var(--muted);font-size:.8125rem;line-height:1.7}
.home-section{margin-bottom:74px!important}.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:29px}.section-title h2{font-size:2.875rem;letter-spacing:-.045em;line-height:1.1;margin:0}.section-title .eyebrow{font-size:.6875rem;letter-spacing:.1em;margin-bottom:15px}.section-title .small{margin:14px 0 0;font-size:.875rem}.section-kicker{color:var(--copper);margin-right:8px;font-variant-numeric:tabular-nums}.section-title>a{display:inline-flex;align-items:center;min-height:44px;font-size:.875rem;line-height:1.5}
.subject-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 28px}.subject-tile{position:relative;display:grid;grid-template-columns:42px minmax(0,1fr) 18px;grid-template-rows:auto auto 1fr;gap:6px 11px;min-width:0;min-height:158px;padding:24px 0;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;color:var(--ink)}.subject-tile:hover{background:#eeeadd;text-decoration:none}.subject-glyph{display:block;grid-column:1;grid-row:1/4;width:42px;height:42px;color:var(--blue);align-self:center}.subject-glyph>svg,.subject-glyph svg{display:block;width:42px;height:42px}.subject-number{grid-column:2;grid-row:1;color:var(--copper);font-size:.625rem;letter-spacing:.08em;line-height:1.5;font-variant-numeric:tabular-nums}.subject-name{grid-column:2;grid-row:2;font-family:var(--display);font-size:1.4375rem;line-height:1.15;letter-spacing:-.025em}.subject-description{grid-column:2;grid-row:3;color:var(--muted);font-size:.8125rem;line-height:1.55}.subject-tile .small{grid-column:2;font-size:.75rem}.tile-arrow{grid-column:3;grid-row:1/4;align-self:center;justify-self:end;color:var(--blue);font-size:1.125rem;line-height:1}
.feature-pair{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:24px;margin:74px 0}.feature-story{display:flex;flex-direction:column;min-width:0;padding:40px;border:1px solid var(--line);border-radius:3px}.feature-story h2{font-size:2.8125rem;line-height:1.06;letter-spacing:-.045em;margin:0 0 24px;font-weight:400}.feature-story h2 em{font-weight:400}.feature-story p{font-size:1rem;line-height:1.7}.feature-story .eyebrow{font-size:.625rem;letter-spacing:.13em}.feature-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px 22px}.feature-story>.feature-actions{margin-top:auto;padding-top:25px}.feature-heading{display:flex;align-items:center;gap:16px;margin-bottom:8px}.feature-heading h2{flex:1;min-width:0;margin-bottom:12px}.feature-visual{width:39%;max-width:230px;height:auto;flex-shrink:0;object-fit:contain}
.feature-story-dark{background:#153c3f;color:var(--paper);border-color:#153c3f}.feature-story-dark .eyebrow{color:#b7cbbd}.feature-story-dark h2 em{color:#dda883}.feature-story-dark p{color:#d9e5da}.feature-story-dark .text-link{color:#e3ebdd}.feature-story-dark .primary,.feature-story-dark .secondary{background:var(--paper);border-color:var(--paper);color:var(--ink)}.feature-story-dark .primary:hover,.feature-story-dark .secondary:hover{background:#e2e7d9}.feature-story-dark a:focus-visible{outline-color:var(--paper)}
.feature-story-light{background:#eeeadf}.feature-story-light h2 em{color:var(--copper)}.feature-story-light p{color:var(--muted)}
.nova-preview{list-style:none;padding:0;margin:22px 0 16px;border-top:1px solid #b7cbbd42}.nova-step{display:grid;grid-template-columns:25px minmax(0,1fr);gap:16px;align-items:start;padding:17px 0;border-bottom:1px solid #b7cbbd42}.nova-step>div{min-width:0}.nova-step .number{color:#dda883;font-size:.6875rem;line-height:1.6;letter-spacing:.07em;font-variant-numeric:tabular-nums}.nova-step strong{display:block;color:var(--paper);font-family:var(--display);font-size:1.1875rem;font-weight:400;line-height:1.3;margin-bottom:5px}.nova-step small{display:block;color:#bdcebf;font-size:.8125rem;line-height:1.55}
.reading-path{list-style:none;padding:0;margin:12px 0 28px;border-top:1px solid #c7cbbf}.reading-path li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:16px;padding:20px 0;border-bottom:1px solid #c7cbbf}.reading-path li>span{font-size:.6875rem;color:var(--copper);line-height:1.8;font-variant-numeric:tabular-nums}.reading-path strong{display:block;font-family:var(--display);font-size:1.3125rem;font-weight:400;line-height:1.3;margin-bottom:6px}.reading-path small{display:block;font-size:.8125rem;line-height:1.6;color:var(--muted)}
.question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 50px;border-top:1px solid var(--line)}.question-card{display:flex;flex-direction:column;gap:13px;min-width:0;min-height:175px;padding:29px 0;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;color:var(--ink)}.question-card:hover{background:#eeeadd;text-decoration:none}.question-card .eyebrow{color:var(--copper);font-size:.625rem;letter-spacing:.1em;margin:0}.question-card strong{font-family:var(--display);font-weight:400;font-size:1.625rem;line-height:1.3;letter-spacing:-.025em}.question-card .small{font-size:.75rem;color:var(--blue)}
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.topic-card{min-width:0;padding:29px;border:1px solid var(--line);border-radius:3px;background:var(--surface)}.topic-card h3{font-family:var(--display);font-size:1.625rem;font-weight:400;line-height:1.2;letter-spacing:-.03em}.topic-card h3 a{color:var(--ink)}.topic-card h3 a:hover{color:var(--blue)}.topic-card p:not(.eyebrow){color:var(--muted);font-size:.9375rem;line-height:1.75;margin-bottom:22px}.topic-card .eyebrow{font-size:.625rem;color:var(--copper)}
.research-band{position:relative;isolation:isolate;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:44px;padding:47px 48px;border:1px solid var(--deep);border-radius:3px;background:var(--deep);color:var(--paper)}.research-band::before{content:"";position:absolute;z-index:-1;inset:0 0 0 47%;pointer-events:none;opacity:.26;background:repeating-radial-gradient(ellipse at 100% 100%,transparent 0 28px,#90ad962e 29px 30px,transparent 31px 51px)}.research-band .eyebrow{color:#c7ad86;font-size:.625rem;letter-spacing:.15em}.research-band h2{font-size:3rem;line-height:1.04;font-weight:400;letter-spacing:-.045em;margin:0 0 22px}.research-band h2 em{color:#dda883;font-weight:400}.research-band p{max-width:630px;color:#d0dfd2;font-size:1rem;line-height:1.75;margin:0}.research-band>a{flex-shrink:0;gap:15px;background:var(--paper);color:var(--ink);border-color:var(--paper)}.research-band>a:hover{background:#e2e7d9}.research-band a:focus-visible{outline-color:var(--paper)}
.home-search{max-width:780px;padding:14px 0 8px}.home-search h1{font-size:3.5rem;line-height:1.1}.home-search .eyebrow{color:var(--blue)}

/* Topic pages: a readable column, source traceability, and a quiet contents rail. */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 200px;gap:56px;align-items:start;max-width:1016px;margin:0 auto}.article{min-width:0;padding:44px 46px;background:var(--surface);border:1px solid var(--line)}
.breadcrumbs,.map-breadcrumbs{display:flex;flex-wrap:wrap;gap:4px 10px;margin-bottom:24px;color:var(--muted);font-size:.8125rem;line-height:1.6}.breadcrumbs a,.map-breadcrumbs a{display:inline-flex;align-items:center;min-height:44px}.breadcrumbs span,.map-breadcrumbs span{align-content:center}
.article-title h1{margin-bottom:24px;font-size:clamp(2.35rem,4.2vw,3.5rem);line-height:1.1;letter-spacing:-.045em;overflow-wrap:anywhere;text-wrap:balance}.article-title .eyebrow{margin-bottom:14px}
.article-tools{display:flex;align-items:center;flex-wrap:wrap;gap:6px 12px;margin-bottom:32px}.article-tools>span{margin-right:auto;color:var(--muted);font-size:.8125rem;line-height:1.65}.article-tools .secondary{padding:10px 18px;font-size:.875rem}
.article section{margin-top:44px;scroll-margin-top:114px}.article section#overview{margin-top:0}.article p{font-size:1.0625rem;line-height:1.8}.article .small{font-size:.875rem}.intro{margin-top:0}.intro p{font-size:1.1875rem;line-height:1.7;color:var(--ink)}
.article-toc{position:sticky;top:112px;max-height:calc(100vh - 145px);overflow:auto;padding-left:24px;border-left:1px solid var(--line);font-size:.8125rem}.article-toc .eyebrow{color:var(--ink);font-size:.6875rem}.article-toc ol,.mobile-contents ol{list-style:none;padding:0;margin:0}.article-toc a{display:flex;align-items:center;min-height:44px;padding:10px 0;color:var(--muted);line-height:1.45}.article-toc a:hover{color:var(--blue)}.article-toc a[aria-current="location"],.mobile-contents a[aria-current="location"]{color:var(--blue);font-weight:600}
.mobile-contents{display:none;margin:0 0 28px;padding:0;border-color:var(--line);background:var(--surface)}.mobile-contents>summary{min-height:48px;padding:14px 19px;line-height:1.5}.mobile-contents[open]>summary{margin:0;border-bottom:1px solid var(--line)}.mobile-contents nav{max-height:65vh;overflow:auto;overscroll-behavior:contain;padding:8px 19px}
.mobile-contents a{display:flex;align-items:center;min-height:44px;padding:10px 0;line-height:1.45}
.evidence-note{padding:26px 28px;border:1px solid #d8cdb9;border-radius:6px;background:var(--accent)}.evidence-note h2{margin:0 0 14px;color:#715723;font-size:1.0625rem;letter-spacing:-.015em}.evidence-note .eyebrow{color:#715723;margin-bottom:8px}.evidence-note p:not(.eyebrow){margin-bottom:12px;font-size:1rem}.review-status{display:block;color:#705a30;font-size:.875rem;line-height:1.65}
.citations{margin-left:5px;font-size:.8rem;white-space:normal}.citations a{padding:0 3px;font-weight:600}
.faq{padding:25px 0;border-bottom:1px solid var(--line);scroll-margin-top:114px}.article .faq{margin-top:0}.faq:target{padding:24px;border:1px solid #b3c9e7;border-radius:5px;background:var(--pale)}
.question-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.question-heading h3{margin:6px 0 12px;line-height:1.45;font-size:1.25rem}.question-heading .icon-button{flex-shrink:0}.faq p{margin-bottom:6px}.faq .faq-boundary{margin:0 0 12px;color:var(--muted);font-size:.8125rem;line-height:1.65}
.scope{margin:24px 0}.scope>div{display:grid;grid-template-columns:160px minmax(0,1fr);gap:20px;padding:13px 0;border-top:1px solid var(--line);font-size:.9375rem;line-height:1.7}.scope dt{font-weight:600}.scope dd{margin:0}
.study{padding:28px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.study h3{font-size:1.5rem;line-height:1.3}.study .eyebrow{color:var(--blue)}.study-limit{padding:17px 20px;border:1px solid #d8cdb9;border-radius:4px;background:var(--accent)}.study .scope>div{grid-template-columns:155px minmax(0,1fr);font-size:.875rem}
.table-wrap{overflow-x:auto;max-width:100%}
.table-wrap:focus-visible{outline:3px solid #1c655d;outline-offset:3px}
table{width:100%;table-layout:fixed;border-collapse:collapse;margin:18px 0;font-size:.875rem;line-height:1.65}caption{text-align:left;padding:0 0 14px;color:var(--ink);font-weight:600}th,td{padding:14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;overflow-wrap:anywhere}thead{background:var(--surface)}tbody th{background:#f6f3ec;font-weight:600}.explanation-table{min-width:28rem}
details{margin:20px 0;padding:16px 20px;border:1px solid var(--line);border-radius:5px;background:var(--surface);font-size:.875rem}summary{cursor:pointer;min-height:44px;font-weight:600;line-height:1.6;align-content:center}summary::marker{color:var(--muted)}details[open]>summary{margin-bottom:14px}details p{margin:13px 0}
.references{padding-left:25px}.references li{padding:12px 0 22px;border-bottom:1px solid var(--line);scroll-margin-top:114px}.references li:target{background:var(--pale);outline:8px solid var(--pale);border-radius:8px}.references li>a{font-size:.9375rem;font-weight:600;line-height:1.55}.references p{margin:8px 0 0;color:var(--muted);font-size:.8125rem;line-height:1.75}
.topic-card h3 a,.references li>a,.backlink-list a,.realm-card li a,.branch li>a{display:inline-flex;align-items:center;min-height:44px;max-width:100%;overflow-wrap:anywhere}.references li>a,.backlink-list a{display:block;padding:9px 0}
.references li p,.source-directory p,.article .scope dd,.article code,.result-question a{overflow-wrap:anywhere}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.related-grid .topic-card{padding:23px}.related-grid h3{font-size:1.125rem}.related-grid p:not(.eyebrow){font-size:.875rem}
.topic-trails{display:flex;flex-wrap:wrap;gap:10px}.topic-trails a{white-space:normal;text-align:left;justify-content:flex-start}
.backlink-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;list-style:none;padding:0}.backlink-list li{border-bottom:1px solid var(--line)}
.article section:focus-visible{outline:3px solid #1c655d;outline-offset:7px;border-radius:8px}
.correction label{display:block;margin:16px 0;font-size:.875rem}.correction input,.correction textarea,.correction select{display:block;width:100%;min-height:48px;margin-top:8px;padding:12px 14px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);font-size:1rem}.correction textarea{min-height:120px;resize:vertical}.correction .secondary{margin:4px 6px 4px 0}
.risk-example{padding:28px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.risk-inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.risk-inputs label{font-size:.875rem;font-weight:600}.risk-inputs input{display:block;width:100%;min-height:48px;margin-top:8px;padding:12px 14px;border:1px solid var(--line);border-radius:4px;background:var(--surface)}
.notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100vw - 40px);padding:14px 23px;border-radius:6px;background:var(--ink);color:#fff;font-size:.875rem;line-height:1.6;z-index:90;box-shadow:0 8px 32px #1d1d1f20}

/* Browse, search and editorial pages share the same typography and controls. */
.page-heading{max-width:780px;margin-bottom:34px}.page-heading h1{font-size:clamp(2.5rem,4vw,3.5rem);letter-spacing:-.05em}.page-heading p:not(.eyebrow){color:var(--muted);font-size:1.0625rem;line-height:1.7}.main>.search-large{max-width:850px}
.search-results-title{margin:36px 0 20px}.result-question{max-width:850px;margin-bottom:20px;padding:28px 30px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.result-question .eyebrow{margin-bottom:12px;color:var(--muted)}.result-question h3{font-size:1.375rem;line-height:1.4}.result-question .question-answer{font-size:1.0625rem;line-height:1.75}.result-context{margin-top:18px;padding:17px 20px;border-radius:5px;background:var(--accent);color:#675536;font-size:.875rem;line-height:1.7}.result-context p{margin:0}.result-question .source-link{display:inline-flex;align-items:center;min-height:44px;margin-top:10px;font-size:.875rem;font-weight:500}.result-question .source-link~button{float:right;margin-top:10px}
.missing-answer{max-width:850px;margin:32px 0;padding:26px 28px;border:1px solid #d8cdb9;border-radius:6px;background:var(--accent)}.missing-answer h2{margin-bottom:12px;font-size:1.25rem}.missing-answer p{margin:0}.empty{max-width:850px;padding:32px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.empty p{margin-bottom:0}.loading{padding:32px 0;color:var(--muted)}.match-label{color:var(--blue);font-size:.8125rem;font-weight:500}
.indexed-results{max-width:850px;list-style:none;margin:0;padding:0}.indexed-results li{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 20px;padding:15px 0;border-bottom:1px solid var(--line)}.indexed-results a{display:inline-flex;align-items:center;min-height:44px;max-width:100%;line-height:1.5}.indexed-results span{color:var(--muted);font-size:.875rem}.ask-examples{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.ask-examples a{padding:9px 16px;border:1px solid var(--line);border-radius:4px;background:var(--surface);font-size:.875rem}
.view-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;padding-bottom:0}.view-tabs button{min-height:44px;padding:11px 19px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--muted);font-size:.875rem}.view-tabs button.active{border-color:var(--ink);background:var(--ink);color:#fff;font-weight:500}
.filter-label{display:flex;align-items:center;gap:14px;margin:20px 0;color:var(--ink);font-size:.875rem}.filter-label select{min-width:220px;min-height:48px;max-width:100%;padding:12px 35px 12px 16px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink)}
.reader-subject-links,.static-subjects>nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin:16px 0 0}.reader-subject-links a,.static-subjects>nav a{display:inline-flex;align-items:center;min-height:44px;max-width:100%;padding:6px 0;font-size:.875rem;overflow-wrap:anywhere}.static-subjects{margin:32px 0}.static-subjects>section{margin:32px 0;scroll-margin-top:130px}.static-subjects ul{columns:2;column-gap:32px;padding-left:20px}.static-subjects li{break-inside:avoid;margin:5px 0}.static-subjects li a{display:inline-flex;align-items:center;min-height:44px;max-width:100%;overflow-wrap:anywhere}@media(max-width:600px){.static-subjects ul{columns:1}}
.browse-subject-context{max-width:850px;margin:28px 0 22px}.browse-subject-context h2,#browse-subject-heading{font-family:var(--display);font-size:clamp(1.875rem,3vw,2.5rem);font-weight:400;line-height:1.15;letter-spacing:-.035em;margin-bottom:14px}#browse-subject-description{max-width:760px;color:var(--muted);line-height:1.7}#browse-introduction{margin:14px 0}#browse-introduction a{display:inline-flex;align-items:center;gap:8px;min-height:44px;max-width:100%;line-height:1.5}.browse-related{margin:6px 0 0}.browse-related a{font-weight:500}
.browse-controls{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;margin:26px 0 16px}.browse-controls .filter-label{display:block;flex:1 1 210px;min-width:0;max-width:100%;margin:0}.browse-controls .filter-label select,.browse-controls .filter-label input{display:block;width:100%;min-width:0;margin-top:8px}.browse-controls .secondary{min-height:48px;flex:0 0 auto}#category-filter,#browse-group-filter{min-width:0;min-height:48px;max-width:100%}#browse-query{width:100%;min-width:0;min-height:48px;max-width:100%;padding:12px 16px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);font-size:1rem}#browse-clear{min-height:48px}#browse-count{margin:20px 0}
#browse-featured{margin:22px 0 26px}#browse-featured>.eyebrow{margin-bottom:12px;color:var(--copper)}.browse-featured-links{display:flex;flex-wrap:wrap;gap:8px 12px}.browse-featured-links a{display:inline-flex;align-items:center;justify-content:space-between;gap:14px;min-height:44px;max-width:100%;padding:10px 14px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);font-size:.875rem;line-height:1.4;overflow-wrap:anywhere}.browse-featured-links a:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}.browse-featured-links a>span{color:var(--blue);flex:0 0 auto}.browse-card .eyebrow{line-height:1.5}.browse-card h3 a{max-width:100%;overflow-wrap:anywhere}#article-grid>.empty,#article-grid>.loading{grid-column:1/-1}
.realm-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:28px 0}.realm-card{padding:26px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.realm-card h3{font-size:1.25rem;line-height:1.35}.realm-card ul{list-style:none;padding:0;margin-bottom:0}.realm-card li a{padding:8px 0;font-size:.9375rem;line-height:1.5}
.domain-intro{max-width:800px;margin-bottom:28px}.domain-intro>p{color:var(--muted)}.branch{max-width:900px;margin:14px 0;padding:18px 23px;border:1px solid var(--line);border-radius:5px}.branch>summary{font-size:1.0625rem}.branch summary span{display:block;margin:6px 0 0 17px;color:var(--muted);font-size:.8125rem;font-weight:400}.branch ul{list-style:none;padding:0;margin:18px 0 0}.branch li{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px 20px;padding:12px 0;border-top:1px solid var(--line);font-size:.9375rem}.branch li span{color:var(--muted);font-size:.8125rem}.branch li .topic-scope-note{flex-basis:100%;max-width:70ch;line-height:1.5;margin:0}
.coverage-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:30px 0}.coverage-stats>div{padding:24px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.coverage-stats strong{display:block;font-size:2.5rem;font-weight:650;letter-spacing:-.05em;line-height:1.2}.coverage-stats span{display:block;margin-top:8px;color:var(--muted);font-size:.8125rem;line-height:1.5}
.coverage-domain{margin:14px 0;padding:20px 24px;border:1px solid var(--line);border-radius:6px;scroll-margin-top:114px}.coverage-domain summary span{display:block;margin:7px 0 0;color:var(--muted);font-size:.875rem;font-weight:400}.coverage-domain table{min-width:630px}.coverage-domain th:first-child{min-width:155px}.coverage-domain td:last-child{min-width:220px}.coverage-domain .table-wrap{margin-top:20px}.coverage-domain a{overflow-wrap:anywhere}#article-inventory table{min-width:760px}
#coverage-filter-form{display:flex;flex-wrap:wrap;align-items:center;gap:12px}#coverage-filter-form label{width:100%;font-weight:600;font-size:.9375rem}#coverage-filter{flex:1;min-width:140px;max-width:480px;min-height:48px;padding:12px 16px;border:1px solid var(--line);border-radius:4px;background:var(--surface)}
.about{max-width:850px;margin:0 auto}.label-guide>div{padding:20px 0;border-bottom:1px solid var(--line)}.label-guide dt{font-weight:600}.label-guide dd{margin:8px 0 0;color:var(--muted)}.source-directory{padding-left:24px}.source-directory li{margin:24px 0}.source-directory p{color:var(--muted);font-size:.875rem}code{font-size:.85em;overflow-wrap:anywhere}

@media(max-width:1200px){.mobile-contents{display:block}.article-toc{display:none}.article-layout{grid-template-columns:minmax(0,760px);max-width:760px}.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.realm-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-story{padding:32px}.feature-story h2{font-size:2.5rem}.hero-foot{padding-right:145px;grid-template-columns:minmax(0,1fr) minmax(200px,280px);gap:28px}.hero-stats{gap:20px 28px}.hero-stat strong{font-size:2.125rem}}
@media(max-width:1120px) and (min-width:801px){.global-header-inner{grid-template-columns:auto minmax(0,1fr);gap:0 20px;padding:4px 0;min-height:104px}.brand{grid-column:1;grid-row:1}.header-search{grid-column:2;grid-row:1;width:270px;justify-self:end}.desktop-nav{grid-column:1/-1;grid-row:2}.header-access{display:none}.home-hero{padding-top:66px}.hero-foot{grid-template-columns:1fr;gap:20px;padding-right:175px}.hero-note br{display:none}}
@media(max-width:800px){
 .global-header-inner{grid-template-columns:minmax(0,1fr) auto;gap:8px 16px;width:calc(100% - 40px);min-height:120px;padding:8px 0}.brand{grid-column:1;grid-row:1;font-size:1.375rem}.brand-mark,.brand-mark>svg{width:34px;height:34px}.desktop-nav{display:none}.header-search{grid-column:1/-1;grid-row:2;width:100%}.header-access{display:none}
 .topbar .search-form{min-height:52px}.topbar .search-form input{min-height:44px;font-size:1rem}.topbar .search-form button{min-height:44px;font-size:.875rem;padding:8px 10px}
 .mobile-menu{display:block;grid-column:2;grid-row:1;position:static;margin:0;padding:0;border:0;border-radius:0;background:transparent}.mobile-menu>summary{display:flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:10px 13px;border:1px solid var(--line);border-radius:4px;background:var(--surface);font-size:.875rem;line-height:1.5;font-weight:500;list-style:none}.mobile-menu>summary::-webkit-details-marker{display:none}.mobile-menu>summary::after{content:"";width:7px;height:7px;border-right:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:rotate(45deg);margin-top:-4px}.mobile-menu[open]>summary::after{transform:rotate(225deg);margin-top:3px}.mobile-menu[open]>summary{margin-bottom:0;background:var(--paper)}
 .mobile-menu>.mobile-nav{display:none;position:absolute;top:calc(100% + 8px);right:0;width:min(320px,calc(100vw - 40px));max-height:calc(100dvh - 160px);overflow:auto;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:5px;box-shadow:0 12px 40px #173d4018;z-index:50}.mobile-menu[open]>.mobile-nav{display:grid;gap:2px}.mobile-nav a{padding:10px 9px;min-height:44px}.mobile-nav a{display:flex;align-items:center;border-radius:3px;color:var(--ink);font-size:.9375rem;line-height:1.5}.mobile-nav a:hover,.mobile-nav a.active{background:var(--paper);text-decoration:none}.mobile-nav a.active{font-weight:600}
 .main{width:calc(100% - 40px);padding:38px 0 70px}.footer{width:calc(100% - 40px);flex-direction:column;gap:12px;padding:24px 0 30px}.footer-links{text-align:left}.footer-links>a{justify-content:flex-start}
 .home-hero{min-height:0;padding:58px 24px 85px;margin-bottom:56px!important}.hero-content{max-width:620px}.home-hero h1{font-size:clamp(3.5rem,10vw,5.5rem)}.home-hero::before{background:linear-gradient(90deg,#0c2c32 0%,rgba(12,44,50,.97) 58%,rgba(12,44,50,.7) 100%)}.atlas-flow{inset:-3% -65% -3% 22%;opacity:.6}.hero-description{max-width:510px;font-size:1.0625rem}.hero-search{margin-top:30px}.hero-foot{grid-template-columns:1fr;gap:22px;padding-right:0;margin-top:42px;padding-top:24px}.hero-stats{gap:22px 38px}.hero-stat strong{font-size:2.125rem}.hero-note{max-width:520px}.motion-toggle{bottom:22px;right:24px}
 .home-section{margin-bottom:56px!important}.section-title h2{font-size:2.5rem}.feature-pair{grid-template-columns:1fr;gap:20px;margin:56px 0}.feature-story{padding:36px}.feature-story h2{font-size:2.75rem}.feature-visual{max-width:250px;width:40%}.feature-story-light .reading-path{margin-bottom:10px}.feature-story-light>.feature-actions{padding-top:25px}.research-band{align-items:flex-start;flex-direction:column;gap:26px;padding:36px}.research-band h2{font-size:2.75rem}
 .article-layout{display:block}.article{padding:34px}.article-title h1{font-size:2.625rem}.article-tools>span{width:100%;margin-bottom:2px}.article-tools{gap:6px 8px}.article-tools .secondary,.article-tools .text-button{min-height:44px}.article section,.faq,.references li,.branch,.coverage-domain{scroll-margin-top:152px}.article p{font-size:1.0625rem}.intro p{font-size:1.125rem}.breadcrumbs{margin-bottom:18px}.coverage-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:600px){
 .browse-controls{gap:14px}.browse-controls .filter-label{flex-basis:100%}.browse-controls .secondary{width:100%}.browse-featured-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.browse-featured-links a{width:100%;padding:10px 12px}.browse-subject-context{margin:24px 0 18px}
 h1{font-size:2.375rem}h2{font-size:1.5rem}.main{width:calc(100% - 36px);padding:32px 0 60px}.global-header-inner,.footer{width:calc(100% - 36px)}
 .home-hero{padding:44px 18px 80px}.home-hero h1{font-size:clamp(2.875rem,12vw,4.25rem);letter-spacing:-.06em;margin-bottom:24px}.home-hero .eyebrow{font-size:.625rem;letter-spacing:.12em;margin-bottom:23px}.hero-description{font-size:1rem;line-height:1.75}.hero-search{margin-top:28px}.search-large{min-height:62px}.search-large input{font-size:1rem;padding:15px 9px}.search-large .search-icon{width:20px;height:20px;margin-left:15px}.search-large button{min-height:44px;margin:5px;padding:12px 18px;font-size:.9375rem}.home-hero .search-examples{gap:0 16px;font-size:.8125rem}.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.hero-stat strong{font-size:1.9375rem}.hero-stat span{font-size:.625rem;letter-spacing:.015em}.hero-note{font-size:.6875rem}.motion-toggle{right:18px;bottom:20px}
 .section-title{align-items:flex-end;gap:16px;margin-bottom:24px}.section-title h2{font-size:2.125rem}.section-title>a{max-width:115px;text-align:right;font-size:.8125rem}.section-title .small{font-size:.8125rem}.subject-grid{gap:0 20px}.subject-tile{grid-template-columns:32px minmax(0,1fr);gap:6px 9px;min-height:165px;padding:22px 0}.subject-glyph,.subject-glyph>svg,.subject-glyph svg{width:32px;height:32px}.subject-name{font-size:1.3125rem}.subject-description{font-size:.75rem}.tile-arrow{display:none}
 .feature-story{padding:27px}.feature-story h2{font-size:2.125rem}.feature-story p{font-size:.9375rem}.feature-heading{gap:14px;align-items:flex-start}.feature-visual{width:35%;margin-top:22px}.nova-step{gap:13px;padding:16px 0}.nova-step strong{font-size:1.125rem}.nova-step small{font-size:.75rem}.feature-actions{gap:8px 16px}.feature-actions .primary{padding:12px 18px;font-size:.875rem}.feature-actions .text-link{font-size:.8125rem}.reading-path strong{font-size:1.25rem}
 .question-grid,.topic-grid,.related-grid{grid-template-columns:1fr;gap:16px}.question-grid{gap:0}.question-card{min-height:0;padding:25px 0}.question-card strong{font-size:1.5rem}.topic-card{padding:25px}.topic-card h3{font-size:1.5rem}.research-band{padding:29px}.research-band h2{font-size:2.5rem}.research-band p{font-size:.9375rem}
 .article{padding:0;border:0;background:transparent}.article-title h1{font-size:2.375rem}.article-tools{margin-bottom:24px}.article section{margin-top:36px}.article p{line-height:1.8}.mobile-contents{margin-bottom:24px}.evidence-note{padding:22px}.evidence-note p:not(.eyebrow){font-size:1rem}.review-status{font-size:.8125rem}.question-heading{gap:10px}.question-heading h3{font-size:1.25rem}.question-heading .icon-button{padding:9px 10px;font-size:.8125rem}.faq{padding:23px 0}.article .faq:target{padding:20px 17px}
 .scope>div,.study .scope>div{grid-template-columns:1fr;gap:4px;padding:13px 0}.study{padding:23px 20px}.study h3{font-size:1.375rem}.study-limit{padding:15px 16px}th,td{padding:12px 10px}.article .table-wrap{max-width:100%;overscroll-behavior-x:contain}.risk-example{padding:23px 20px}.risk-inputs{grid-template-columns:1fr;gap:16px}
 .result-question{padding:25px 22px}.result-question h3{font-size:1.375rem}.result-context{padding:16px}.result-question .source-link~button{float:none;margin-top:4px}.missing-answer{padding:23px}.empty{padding:27px}.indexed-results li{gap:0 12px}.realm-grid{grid-template-columns:1fr}.realm-card{padding:24px}.filter-label{display:block}.filter-label select{display:block;width:100%;margin-top:8px}.branch{padding:17px 19px}.branch li{gap:2px}.coverage-domain{padding:18px}.coverage-stats{gap:12px}.coverage-stats>div{padding:20px 17px}.coverage-stats strong{font-size:2.125rem}.source-directory{padding-left:20px}.backlink-list{grid-template-columns:1fr}.topic-trails{display:grid;grid-template-columns:1fr}
}
@media(max-width:360px){.subject-grid{grid-template-columns:1fr}.subject-tile{grid-template-columns:42px minmax(0,1fr) 18px;min-height:113px;padding:19px 0}.subject-glyph,.subject-glyph>svg,.subject-glyph svg{width:42px;height:42px}.subject-name{font-size:1.5rem}.tile-arrow{display:block}.feature-story{padding:24px}.feature-heading{flex-direction:column;gap:0}.feature-visual{width:70%;max-width:220px;align-self:center;margin:0 0 12px}.question-heading{flex-wrap:wrap}.question-heading .icon-button{margin-top:-5px}.search-large button{padding:12px 15px}}
@keyframes atlas-tide-a{from{transform:translate(-1.4%,.8%) rotate(-.7deg)}to{transform:translate(1.3%,-.9%) rotate(.8deg)}}
@keyframes atlas-tide-b{from{transform:translate(.8%,-1%) rotate(.6deg)}to{transform:translate(-1.1%,1%) rotate(-.8deg)}}
@keyframes atlas-contour-drift{from{transform:translate(-.7%,.5%)}to{transform:translate(.7%,-.5%)}}
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