@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/plus-jakarta-sans-latin-wght-normal.eXO_dkmS.woff2)format("woff2")}@font-face{font-family:"Source Serif 4";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-latin-standard-normal.BpEBLj1O.woff2)format("woff2")}@font-face{font-family:"Source Serif 4";font-style:italic;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-latin-standard-italic.BOLXpvkj.woff2)format("woff2")}:root{--navy-950:#071d33;--navy-900:#0b2a4a;--navy-800:#123b66;--navy-700:#195994;--sky-500:#4aa3e3;--sky-400:#69b7ed;--sky-200:#c4e2f8;--sky-100:#dceefc;--sky-50:#ecf7ff;--alert:#d3312c;--alert-bg:#fdf1f0;--ink:#13202e;--ink-2:#44546a;--ink-3:#5e6e82;--paper:#fff;--paper-2:#f4f8fc;--rule:#d8e1eb;--rule-2:#e9eff6;--link:var(--navy-700);--link-hover:var(--navy-950);--card-shadow:0 18px 40px -18px #071d3352;--bone:#efe5d0;--bone-line:#9b8763;--vein:#4d7cc4;--artery:#cf6a62;--nerve:#d9a82e;--font-ui:"Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-text:"Source Serif 4", Georgia, "Times New Roman", serif;--measure:42rem;--shell:76rem;--gutter:clamp(1rem, 4vw, 2.5rem)}@media screen and (prefers-color-scheme:dark){:root{--ink:#e6eef7;--ink-2:#b4c3d4;--ink-3:#8d9eb3;--paper:#0a1828;--paper-2:#0f2236;--rule:#233a52;--rule-2:#1a2e44;--link:#8cc8f2;--link-hover:#c4e2f8;--sky-50:#10273f;--sky-100:#15314e;--sky-200:#24476b;--alert-bg:#3a1716;--card-shadow:0 18px 40px -18px #0009;--bone:#d9ccb0}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:1.5rem}body{background:var(--paper);color:var(--ink);font:400 1.1875rem/1.65 var(--font-text);font-optical-sizing:auto;text-rendering:optimizelegibility;margin:0}img{max-width:100%;height:auto;display:block}a{color:var(--link);text-underline-offset:.18em;text-decoration-thickness:1px}a:hover{color:var(--link-hover);text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--sky-400);outline-offset:2px;border-radius:3px}.shell{max-width:var(--shell);padding:0 var(--gutter);margin:0 auto}.skip{position:absolute;left:-999px}.skip:focus{z-index:10;background:var(--paper);padding:.5rem 1rem;top:.5rem;left:1rem}.ui{font-family:var(--font-ui)}.strip{background:var(--navy-950);color:#cbdcee;font:500 .8125rem/1 var(--font-ui)}.strip .shell{justify-content:space-between;align-items:center;gap:1rem;min-height:2.5rem;display:flex}.strip a{color:inherit;align-items:center;gap:.6rem;text-decoration:none;display:inline-flex}.strip a:hover{color:#fff}.strip .mark{background:#fff;border-radius:.4rem;width:1.5rem;height:1.5rem;padding:2px}.strip strong{color:#fff;font-weight:700}.strip .out:after{content:"↗";color:var(--sky-400);margin-left:-.3rem}.masthead{background:var(--paper);border-bottom:1px solid var(--rule)}.masthead .top{justify-content:space-between;align-items:baseline;gap:1.5rem;padding-top:1.35rem;padding-bottom:.9rem;display:flex}.wordmark{font:800 1.6rem/1 var(--font-ui);letter-spacing:-.025em;color:var(--navy-900);text-decoration:none}.wordmark span{color:var(--navy-700);font-weight:500}.wordmark:hover{color:var(--navy-900)}@media screen and (prefers-color-scheme:dark){.wordmark,.wordmark:hover{color:#fff}.wordmark span{color:var(--sky-400)}}.tagline{font:500 .875rem/1.3 var(--font-ui);color:var(--ink-3);text-align:right;margin:0}.nav{scrollbar-width:none;font:600 .9rem/1 var(--font-ui);gap:1.6rem;margin:0;padding:0;list-style:none;display:flex;overflow-x:auto}.nav::-webkit-scrollbar{display:none}.nav a{color:var(--ink-2);white-space:nowrap;border-bottom:3px solid #0000;padding:.8rem 0 .95rem;text-decoration:none;display:block}.nav a:hover{color:var(--navy-700)}.nav a[aria-current=page]{color:var(--navy-700);border-bottom-color:var(--sky-400)}@media screen and (prefers-color-scheme:dark){.nav a[aria-current=page]{color:#fff}}.hero{background:var(--navy-900);color:#fff;position:relative;overflow:hidden}.hero .shell{grid-template-columns:minmax(0,1fr) 21rem;gap:4rem;padding-top:3.5rem;padding-bottom:3.75rem;display:grid;position:relative}.hero-art{pointer-events:none;width:100%;height:100%;position:absolute;inset:0}.eyebrow{font:700 .75rem/1 var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:var(--sky-400);margin:0 0 1rem}.hero h1{font:800 clamp(2.6rem, 6.2vw, 4.4rem)/1 var(--font-ui);letter-spacing:-.035em;margin:0 0 1.25rem}.hero .lead{color:#d4e5f6;max-width:38rem;margin:0 0 2rem;font-size:1.3rem;line-height:1.55}.byline{font:500 .875rem/1.35 var(--font-ui);align-items:center;gap:.85rem;display:flex}.byline img{object-fit:cover;border-radius:50%;width:2.75rem;height:2.75rem}.byline p{margin:0}.byline .who{font-weight:700}.byline .meta{color:var(--ink-3)}.hero .byline img{box-shadow:0 0 0 2px var(--navy-900), 0 0 0 4px var(--sky-400)}.hero .byline .who,.hero .byline .who a{color:#fff}.hero .byline .meta{color:#a9c4de}.reviewed{color:#1d7a4c;align-items:center;gap:.3rem;font-weight:700;display:inline-flex}.reviewed:before{content:"✓"}.page{grid-template-columns:minmax(0,1fr) 21rem;gap:4rem;padding-top:2.75rem;padding-bottom:4rem;display:grid}.page>.main{min-width:0;max-width:var(--measure)}.rail{min-width:0}.rail-sticky{gap:1.5rem;display:grid;position:sticky;top:1.5rem}.home .rail{z-index:2;margin-top:-25rem;position:relative}.home .rail .rail-sticky{margin-top:2rem}.facts{background:var(--paper);border:1px solid var(--rule);box-shadow:var(--card-shadow);font-family:var(--font-ui);border-radius:14px;overflow:hidden}.facts>summary,.facts-title{background:var(--sky-50);border-bottom:1px solid var(--rule);font:800 .8rem/1 var(--font-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--navy-700);justify-content:space-between;align-items:center;margin:0;padding:1rem 1.25rem;list-style:none;display:flex}@media screen and (prefers-color-scheme:dark){.facts>summary,.facts-title{color:var(--sky-400)}}.facts dl{margin:0;padding:.35rem 1.25rem .6rem}.facts dl div{border-bottom:1px solid var(--rule-2);padding:.7rem 0}.facts dl div:last-child{border-bottom:0}.facts dt{font:700 .7rem/1.2 var(--font-ui);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-bottom:.25rem}.facts-more>summary{font:700 .85rem/1 var(--font-ui);color:var(--link);cursor:pointer;padding:.2rem 1.25rem 1rem}.facts>dl{padding-bottom:0}.facts>dl>div:last-child{border-bottom:1px solid var(--rule-2)}.facts-more>summary{padding-top:.9rem}.facts-more>dl{padding-top:0}.facts dd{font:400 .95rem/1.45 var(--font-text);color:var(--ink);margin:0}.toc{font-family:var(--font-ui)}.toc-title{font:800 .75rem/1 var(--font-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin:0 0 .6rem}.toc ol{border-left:2px solid var(--rule);counter-reset:toc;margin:0;padding:0;list-style:none}.toc li{counter-increment:toc}.toc a{font:500 .875rem/1.35 var(--font-ui);color:var(--ink-2);border-left:2px solid #0000;gap:.6rem;margin-left:-2px;padding:.38rem 0 .38rem 1rem;text-decoration:none;display:flex}.toc a:before{content:counter(toc, decimal-leading-zero);white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--ink-3);flex:0 0 2ch;font-weight:700}.toc a:hover{color:var(--link)}.toc a.is-active{border-left-color:var(--navy-700);color:var(--link);font-weight:700}.toc-mobile,.contents-print{display:none}.start{margin:0 0 3rem}.section-kicker{font:800 .75rem/1 var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 1rem}.paths{counter-reset:path;grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem;margin:0;padding:0;list-style:none;display:grid}.paths li{counter-increment:path}.paths a{border:1px solid var(--rule);background:var(--paper);height:100%;color:var(--ink);border-radius:12px;grid-template-columns:auto 1fr;align-items:start;gap:.1rem 1rem;padding:1.1rem 1.2rem 1.15rem;text-decoration:none;transition:border-color .15s,transform .15s,box-shadow .15s;display:grid}.paths a:before{content:counter(path, decimal-leading-zero);font:800 1.35rem/1.1 var(--font-ui);color:var(--sky-500);font-variant-numeric:tabular-nums;grid-row:span 2}.paths a:hover{border-color:var(--navy-700);box-shadow:var(--card-shadow);transform:translateY(-2px)}.paths strong{font:700 1.02rem/1.3 var(--font-ui);color:var(--navy-900)}@media screen and (prefers-color-scheme:dark){.paths strong{color:#fff}}.paths span{font:400 .875rem/1.45 var(--font-ui);color:var(--ink-2);-webkit-line-clamp:2;-webkit-box-orient:vertical;align-self:start;display:-webkit-box;overflow:hidden}.article-head{background:var(--paper-2);border-bottom:1px solid var(--rule)}.article-head .shell{padding-top:2.25rem;padding-bottom:2.25rem}.crumbs{font:600 .8125rem/1 var(--font-ui);color:var(--ink-3);margin:0 0 1.1rem}.crumbs a{color:var(--ink-3);text-decoration:none}.crumbs a:hover{color:var(--link);text-decoration:underline}.crumbs span{color:var(--rule);margin:0 .5rem}.article-head h1{max-width:52rem;font:800 clamp(2.2rem, 5vw, 3.4rem)/1.05 var(--font-ui);letter-spacing:-.03em;color:var(--navy-900);margin:0 0 1.4rem}@media screen and (prefers-color-scheme:dark){.article-head h1{color:#fff}}.in-short{background:var(--sky-50);border-left:4px solid var(--navy-700);border-radius:0 12px 12px 0;margin:0 0 2.25rem;padding:1.3rem 1.5rem 1.4rem}.in-short p{margin:0;font-size:1.1rem;line-height:1.6}.in-short .label{font:800 .72rem/1 var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:var(--navy-700);margin:0 0 .55rem}@media screen and (prefers-color-scheme:dark){.in-short .label{color:var(--sky-400)}}.prose>:first-child{margin-top:0}.prose>p,.prose>ul,.prose>ol{margin:0 0 1.15rem}.prose>ul,.prose>ol{padding-left:1.25rem}.prose>ul>li,.prose>ol>li{margin-bottom:.45rem;padding-left:.2rem}.prose>ul>li::marker,.prose>ol>li::marker{color:var(--sky-500)}.prose h2{border-top:1px solid var(--rule);font:800 1.65rem/1.2 var(--font-ui);letter-spacing:-.02em;color:var(--navy-900);margin:3rem 0 1rem;padding-top:1.4rem}.prose h3{font:700 1.2rem/1.3 var(--font-ui);color:var(--navy-900);margin:2rem 0 .6rem}@media screen and (prefers-color-scheme:dark){.prose h2,.prose h3{color:#fff}}.prose strong{font-weight:650}.prose .lead-list{border-top:1px solid var(--rule-2);margin:1.5rem 0;padding:0;list-style:none}.prose .lead-list li{border-bottom:1px solid var(--rule-2);margin:0;padding:.9rem 0 .9rem 1.1rem;position:relative}.prose .lead-list li:before{content:"";background:var(--sky-500);border-radius:50%;width:5px;height:5px;position:absolute;top:1.25rem;left:0}.prose .lead-list .lead-term{font:700 1rem/1.4 var(--font-ui);color:var(--navy-900);margin-bottom:.15rem;display:block}@media screen and (prefers-color-scheme:dark){.prose .lead-list .lead-term{color:#fff}}.prose .dropcap:first-letter{float:left;font:800 3.4rem/.9 var(--font-ui);color:var(--navy-700);margin:.3rem .55rem 0 0}a.cite{font:700 .66em/0 var(--font-ui);vertical-align:super;white-space:nowrap;padding:0 .08em;text-decoration:none}a.cite:before{content:"[";color:var(--ink-3);font-weight:500}a.cite:after{content:"]";color:var(--ink-3);font-weight:500}a.cite:hover{text-decoration:underline}:target{scroll-margin-top:1.5rem}li:target{background:var(--sky-50);outline:6px solid var(--sky-50)}.view{background:var(--sky-50);border:1px solid var(--sky-200);border-left:5px solid var(--navy-700);border-radius:4px 14px 14px 4px;margin:2.5rem 0;padding:1.5rem 1.6rem 1.4rem}.view-head{align-items:center;gap:.9rem;margin-bottom:1rem;display:flex}.view-head img{object-fit:cover;width:3rem;height:3rem;box-shadow:0 0 0 2px var(--paper), 0 0 0 4px var(--sky-400);border-radius:50%}.view-label{font:800 .78rem/1.2 var(--font-ui);letter-spacing:.1em;text-transform:uppercase;color:var(--navy-700);margin:0}@media screen and (prefers-color-scheme:dark){.view-label{color:var(--sky-400)}}.view-note{font:500 .8rem/1.3 var(--font-ui);color:var(--ink-3);margin:.2rem 0 0}.view-title{font:800 1.25rem/1.3 var(--font-ui);letter-spacing:-.01em;color:var(--navy-900);margin:0 0 .5rem}@media screen and (prefers-color-scheme:dark){.view-title{color:#fff}}.view-text{margin:0 0 1rem;font-size:1.08rem;line-height:1.6}.view-link{font:700 .875rem/1 var(--font-ui);text-decoration:none}.view-link:after{content:" ↗";color:var(--sky-500)}.view-link:hover{text-decoration:underline}.stats,.prose>.stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:2rem 0 2.25rem;padding:0;list-style:none;display:grid}.stats li{border-top:3px solid var(--sky-400);margin:0;padding:1rem 0 0}.stat-num{font:800 2rem/1 var(--font-ui);letter-spacing:-.03em;color:var(--navy-700);font-variant-numeric:tabular-nums;margin-bottom:.35rem;display:block}@media screen and (prefers-color-scheme:dark){.stat-num{color:var(--sky-400)}}.stat-text{font:500 .85rem/1.45 var(--font-ui);color:var(--ink-2);display:block}.fig{margin:2.25rem 0}.fig-frame{background:var(--paper-2);border:1px solid var(--rule);border-radius:14px;padding:1.25rem}.fig svg{width:100%;height:auto;display:block}.fig-panels{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.fig figcaption{font:400 .9rem/1.5 var(--font-ui);color:var(--ink-2);margin-top:.8rem}.fig figcaption b{color:var(--ink);font-weight:700}.fig .credit{color:var(--ink-3);margin-top:.25rem;font-size:.8rem;display:block}.anat .bone{fill:var(--bone);stroke:var(--bone-line);stroke-width:1.5px}.anat .vein{fill:var(--vein)}.anat .artery{fill:var(--artery)}.anat .nerve{fill:none;stroke:var(--nerve);stroke-width:3px;stroke-linecap:round}.anat .lbl{font:600 14px var(--font-ui);fill:var(--ink-2)}.anat .lbl-strong{font:800 16px var(--font-ui);fill:var(--ink)}.anat .num{font:800 18px var(--font-ui);fill:var(--navy-700)}.anat .lead{stroke:var(--ink-3);stroke-width:1px}.anat .dim{stroke:var(--navy-700);stroke-width:1.5px}.anat .panel{fill:var(--paper);stroke:var(--rule)}@media screen and (prefers-color-scheme:dark){.anat .num{fill:var(--sky-400)}.anat .dim{stroke:var(--sky-400)}}.callout{border-radius:12px;margin:1.75rem 0;padding:1.1rem 1.3rem 1.15rem 3.4rem;position:relative}.callout p{margin:0;font-size:1.05rem}.callout-title{font:800 .95rem/1.3 var(--font-ui)!important;margin:0 0 .3rem!important}.callout-urgent{background:var(--alert-bg);border:1px solid color-mix(in srgb, var(--alert) 35%, transparent)}.callout-urgent:before{content:"!";background:var(--alert);color:#fff;width:1.5rem;height:1.5rem;font:800 .95rem/1.5rem var(--font-ui);text-align:center;border-radius:50%;position:absolute;top:1.1rem;left:1.1rem}.callout-urgent .callout-title{color:#bd2824}@media screen and (prefers-color-scheme:dark){.callout-urgent .callout-title{color:#ff8a84}}.studies{border:1px solid var(--rule);border-radius:12px;margin:1.75rem 0 2rem;overflow-x:auto}.studies table{border-collapse:collapse;width:100%;font:400 .875rem/1.45 var(--font-ui)}.studies th{text-align:left;background:var(--paper-2);border-bottom:1px solid var(--rule);font:800 .7rem/1.2 var(--font-ui);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap;padding:.75rem .9rem}.studies td{border-bottom:1px solid var(--rule-2);vertical-align:top;padding:.8rem .9rem}.studies tr:last-child td{border-bottom:0}.studies td:first-child{width:20%;font-weight:700}.studies td:nth-child(2){width:1%}.studies td:nth-child(3){width:17%}.studies td:first-child a{text-decoration:none}.studies .n{font-variant-numeric:tabular-nums;color:var(--ink-2)}.pill{background:var(--sky-100);color:var(--navy-800);font:700 .72rem/1.3 var(--font-ui);white-space:nowrap;border-radius:999px;padding:.2rem .55rem;display:inline-block}@media screen and (prefers-color-scheme:dark){.pill{color:var(--sky-400);background:var(--sky-100)}}.updates{margin:3.5rem 0 0}.updates h2,.editor h2,.refs-block h2,.related h2{border-top:1px solid var(--rule);font:800 1.65rem/1.2 var(--font-ui);letter-spacing:-.02em;color:var(--navy-900);margin:0 0 1.25rem;padding-top:1.4rem}@media screen and (prefers-color-scheme:dark){.updates h2,.editor h2,.refs-block h2,.related h2{color:#fff}}.updates ol{gap:1rem;margin:0;padding:0;list-style:none;display:grid}.updates li{border-bottom:1px solid var(--rule-2);grid-template-columns:6.5rem 1fr;gap:1.25rem;padding:1.1rem 0;display:grid}.updates time{font:800 .8rem/1.4 var(--font-ui);color:var(--navy-700);text-transform:uppercase;letter-spacing:.06em}@media screen and (prefers-color-scheme:dark){.updates time{color:var(--sky-400)}}.updates .src{font:500 .78rem/1.3 var(--font-ui);color:var(--ink-3);text-transform:none;letter-spacing:0;margin-top:.2rem;display:block}.updates p{margin:0 0 .5rem;font-size:1.02rem;line-height:1.55}.updates .tags{font:600 .8rem/1 var(--font-ui);flex-wrap:wrap;align-items:center;gap:.4rem;display:flex}.updates .tags a{margin-left:.4rem;text-decoration:none}.updates .tags a:hover{text-decoration:underline}.editor{margin:3.5rem 0 0}.editor-card{background:var(--navy-900);color:#dbe8f5;border-radius:16px;grid-template-columns:7rem 1fr;gap:1.5rem;padding:1.5rem;display:grid}.editor-card img{object-fit:cover;border-radius:12px;width:7rem;height:7rem}.editor-card .name{font:800 1.3rem/1.2 var(--font-ui);color:#fff;margin:0}.editor-card .role{font:600 .85rem/1.3 var(--font-ui);color:var(--sky-400);margin:.25rem 0 .8rem}.editor-card p{margin:0 0 .9rem;font-size:1rem;line-height:1.6}.editor-card .links{font:700 .875rem/1 var(--font-ui);flex-wrap:wrap;gap:1.25rem;margin:0;display:flex}.editor-card .links a{color:#fff;border-bottom:2px solid var(--sky-400);padding-bottom:.2rem;text-decoration:none}.editor-card .links a.out:after{content:" ↗";color:var(--sky-400)}.refs-block{margin:3.5rem 0 0}.refs{font:400 .9rem/1.5 var(--font-text);color:var(--ink-2);margin:0;padding-left:1.6rem}.refs li{margin-bottom:.6rem;padding-left:.3rem}.refs li::marker{font:700 .8rem var(--font-ui);color:var(--ink-3)}.refs a{color:var(--ink-2)}.refs a:hover{color:var(--link)}.refs .back{font-family:var(--font-ui);color:var(--link);margin-left:.35rem;text-decoration:none}.related{margin:3.5rem 0 0}.related ul{grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem;margin:0;padding:0;list-style:none;display:grid}.related a{border:1px solid var(--rule);height:100%;color:var(--ink);border-radius:12px;padding:1rem 1.15rem;text-decoration:none;transition:border-color .15s;display:block}.related a:hover{border-color:var(--navy-700)}.related strong{font:700 1rem/1.3 var(--font-ui);color:var(--navy-900);margin-bottom:.3rem;display:block}.related strong:after{content:" →";color:var(--sky-500)}@media screen and (prefers-color-scheme:dark){.related strong{color:#fff}}.related span{font:400 .85rem/1.45 var(--font-ui);color:var(--ink-2);display:block}.footer{background:var(--paper-2);border-top:1px solid var(--rule);font-family:var(--font-ui)}.footer .shell{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:3rem;padding-top:2.75rem;padding-bottom:2.5rem;display:grid}.footer .logo{background:#fff;border-radius:10px;padding:.6rem .8rem;display:inline-block}.footer .logo img{width:11.5rem}.footer .about{font:400 .9rem/1.55 var(--font-ui);color:var(--ink-2);max-width:30rem;margin:1rem 0 0}.footer nav ul{font:600 .9rem/1.3 var(--font-ui);grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem 1.5rem;margin:0;padding:0;list-style:none;display:grid}.footer nav a{color:var(--ink);text-decoration:none}.footer nav a:hover{color:var(--link);text-decoration:underline}.footer .fine{border-top:1px solid var(--rule);font:500 .8rem/1.5 var(--font-ui);color:var(--ink-2);flex-wrap:wrap;grid-column:1/-1;justify-content:space-between;gap:.5rem 2rem;margin:0;padding-top:1.25rem;display:flex}@media (width<=1060px){.hero .shell,.page{grid-template-columns:minmax(0,1fr);gap:2rem}.hero .shell{padding-bottom:2.75rem}.home .rail{margin-top:0}.rail-sticky{position:static}.rail .toc{display:none}.toc-mobile{border:1px solid var(--rule);border-radius:12px;margin:0 0 2rem;display:block}.toc-mobile>summary{font:800 .75rem/1 var(--font-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);cursor:pointer;padding:.9rem 1.1rem}.toc-mobile .toc ol{margin:0 1.1rem 1rem}.page>.main{max-width:none}.home .page{padding-top:0}.home .rail{margin:0 calc(var(--gutter) * -1);order:-1}.home .facts{box-shadow:none;border-left:0;border-right:0;border-radius:0}.home .facts dl{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:1.5rem;display:grid}}@media (width<=640px){body{font-size:1.125rem}.strip .out{display:none}.masthead .top{padding-top:1rem;padding-bottom:.5rem}.wordmark{font-size:1.35rem}.tagline{display:none}.nav{margin-right:calc(var(--gutter) * -1);padding-right:var(--gutter);gap:1.25rem}.hero .shell{padding-top:2.25rem}.hero .lead{font-size:1.15rem}.home .facts dl,.paths,.related ul{grid-template-columns:minmax(0,1fr)}.stats{grid-template-columns:minmax(0,1fr);gap:.75rem}.fig-panels{grid-template-columns:minmax(0,1fr)}.fig-frame{padding:.75rem}.stats li{grid-template-columns:6.5rem 1fr;align-items:baseline;gap:1rem;display:grid}.stat-num{font-size:1.6rem}.updates li{grid-template-columns:minmax(0,1fr);gap:.4rem}.editor-card{grid-template-columns:minmax(0,1fr)}.view{margin-left:calc(var(--gutter) * -.5);margin-right:calc(var(--gutter) * -.5);padding:1.25rem 1.1rem 1.15rem}.prose h2{font-size:1.45rem}.footer .shell{grid-template-columns:minmax(0,1fr);gap:2rem}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}:root{color-scheme:light dark}a,.refs{overflow-wrap:anywhere}.home{container-type:inline-size}.home-layout{grid-template-columns:minmax(0,1fr) 21rem;column-gap:4rem;display:grid;position:relative}.home-heading{isolation:isolate;background:0 0;grid-area:1/1;padding:3.5rem 0 3.75rem;position:relative;overflow:visible}.home-heading:before{content:"";width:100cqw;top:0;bottom:0;left:calc((min(100cqw,76rem) - 100cqw)/2 - var(--gutter));background:var(--navy-900) url(/_astro/hero-art.CeB5rUjr.svg) right center / cover no-repeat;z-index:-1;pointer-events:none;position:absolute}.home .home-rail{z-index:2;grid-area:1/2/span 2;margin:0;padding-top:6rem;position:relative}.home-main{min-width:0;max-width:var(--measure);grid-area:2/1;padding:2.75rem 0 4rem}.contents-sticky{background:var(--paper);border:1px solid var(--rule);border-radius:12px;margin-top:2rem;padding:1.25rem;position:sticky;top:1.5rem}.home-heading .lead{max-width:38rem}.home-heading .byline .who a{color:#fff}.home-heading .byline .meta{color:#a9c4de}.hero h1,.article-head h1{overflow-wrap:anywhere}.topic-nav{min-width:0}.nav{scrollbar-width:thin;overscroll-behavior-x:contain}.nav::-webkit-scrollbar{height:6px;display:block}.nav::-webkit-scrollbar-thumb{background:var(--rule);border-radius:6px}.nav a{overflow-wrap:normal}.paths span{-webkit-line-clamp:unset;display:block;overflow:visible}.paths a:before{color:var(--navy-700)}.facts-more[open]>summary{display:block}@media (width>=1061px){.facts-more>summary,.facts-more[open]>summary{display:none}}.facts h2{margin:0}.contents-mobile{margin-bottom:2rem}.draft-label{font:700 .7rem var(--font-ui);border:1px solid;width:max-content;margin:0 0 1rem;padding:.35rem .55rem}.emergency-notice{border-left:4px solid var(--alert);background:var(--alert-bg);max-width:76rem;font:500 .9rem/1.5 var(--font-ui);margin:1rem auto;padding:1rem 1.5rem}.updates .update-date{font:800 .8rem/1.4 var(--font-ui);color:var(--navy-700);text-transform:uppercase;letter-spacing:.06em}.pill{white-space:normal;overflow-wrap:anywhere}.studies table{min-width:66rem}.studies td{min-width:0}.studies th:nth-child(4),.studies th:nth-child(5),.studies th:nth-child(6){width:23%}.table-wrap{border:1px solid var(--rule);border-radius:12px;margin:1.75rem 0 2rem;overflow-x:auto}.table-wrap table{border-collapse:collapse;width:100%;font:.875rem/1.45 var(--font-ui)}.table-wrap th,.table-wrap td{border-bottom:1px solid var(--rule);vertical-align:top;text-align:left;padding:.8rem .9rem}.table-wrap th{background:var(--paper-2)}.citation-backlink{justify-content:center;align-items:center;min-width:28px;min-height:28px;margin:0 .25rem;display:inline-flex}.glossary{margin:0}.glossary>div{border-bottom:1px solid var(--rule);padding:1rem 0}.glossary dt{font-weight:700}.glossary dd{margin:.5rem 0 0}.term{text-decoration-style:dotted}.prose .callout p{font-size:1.05rem}.callout>p:last-child{margin-bottom:0}:focus-visible{outline-color:var(--navy-700)}@media screen and (prefers-color-scheme:dark){:focus-visible{outline-color:var(--sky-400)}.paths a:before,.updates .update-date{color:var(--sky-400)}}@media (width<=1060px){.home-layout{grid-template-columns:minmax(0,1fr)}.home-heading{padding:2.75rem 0}.home .home-rail{margin:0 calc(var(--gutter)*-1);grid-area:2/1;padding-top:0}.home-main{grid-area:3/1;padding-top:2.5rem}.contents-sticky{display:none}.home-heading:before{left:calc(var(--gutter)*-1)}.home .facts-more>dl{padding-left:1.25rem;padding-right:1.25rem}.rail-sticky .contents-desktop{display:none}}@media (width<=640px){.wordmark{line-height:1.2}.hero h1{font-size:clamp(2.2rem,10vw,2.8rem)}.editor-card{grid-template-columns:minmax(0,1fr)}.editor-card img{width:5rem;height:5rem}.updates li{grid-template-columns:minmax(0,1fr);gap:.5rem}.footer .shell{gap:2rem}.paths a{column-gap:.8rem;padding:1rem}.emergency-notice{margin:.75rem var(--gutter);padding:1rem}}@media print{:root{color-scheme:light;--navy-800:#000;--paper:#fff;--paper-2:#f6f6f6;--ink:#000;--ink-2:#222;--ink-3:#333;--link:#000;--navy-700:#000;--navy-900:#000;--rule:#aaa;--sky-50:#f6f6f6}body{font:11pt/1.5 Georgia,serif}.strip,.masthead,.footer,.skip,.draft-label,.contents-mobile{display:none}.shell{max-width:none;padding:0}.home-layout,.page{display:block}.home-heading:before{display:none}.home-heading,.article-head{color:#000;background:0 0;padding:.3rem 0 1rem}.eyebrow{color:#000;line-height:1.4}.home-heading .lead,.home-heading .byline .meta,.home-heading .byline .who a{color:#000}.home .home-rail{margin:1rem 0;padding:0;position:static}.home-main{max-width:none;padding:0}.contents-sticky,.rail-sticky{position:static}.contents-desktop,.contents-sticky{display:none!important}.rail .toc{display:none}.contents-print{margin:1rem 0 2rem;display:block}.facts-more>summary,.facts-more[open]>summary{display:none}.in-short,.fig{break-inside:avoid}.facts{box-shadow:none;break-inside:auto;overflow:visible}.facts dl>div{break-inside:avoid}.facts-more>dl{display:block!important}.article-body,.page>.main{max-width:none}.studies,.table-wrap{overflow:visible}.table-wrap table{table-layout:fixed;min-width:0}.table-wrap th,.table-wrap td{overflow-wrap:anywhere;min-width:0;padding:5px;font-size:8pt}.table-wrap .pill{background:0 0;padding:0}.refs a[href^=http]:after{content:" (" attr(href) ")";font-size:9pt}.citation-backlink{display:none}.editor-card{color:#000;background:0 0;border:1px solid #aaa}.editor-card .name,.editor-card .role,.editor-card .links a,.prose h2,.prose h3{color:#000}.fig svg{max-height:240px}.paths a:before,.paths strong,.stat-num{color:#000}}