@charset "UTF-8";
:root{--paper:#fff;--white:#fff;--ink:#14233b;--muted:#536176;--line:#dce3ee;--green:#164ece;--green-light:#edf3ff;--peach:#edf3ff;--serif:Arial,Helvetica,sans-serif;--sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;--navy:#101f38;--blue:#2459dd;--wash:#f4f7fc;--mono:'SFMono-Regular',Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:var(--green)}a:focus-visible{outline:3px solid #e69b14;outline-offset:5px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.15;font-weight:650;letter-spacing:-.035em}h1{font-size:clamp(36px,4.5vw,64px)}h2{font-size:clamp(28px,3vw,40px)}h3{font-size:22px}p{margin-bottom:24px}.wrap{max-width:1280px;margin:auto;padding:0 48px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:24px;padding-bottom:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;line-height:1.15}.operations-mark{display:grid;grid-template-columns:repeat(2,8px);gap:4px;align-content:center;justify-content:center;background:var(--blue);width:40px;height:40px;flex-shrink:0}.operations-mark i{width:8px;height:8px;background:#fff}.operations-mark i:last-child{opacity:.4}.operations-wordmark span{display:block;font:10px/1.5 var(--mono);letter-spacing:.08em;text-transform:uppercase}.operations-wordmark strong{font-size:22px;letter-spacing:-.035em}.site-header nav{display:flex;flex-wrap:wrap;gap:24px;font-size:13px;font-weight:600}.site-header nav a{text-decoration:none}.site-header nav a[aria-current=page]{color:var(--blue)}.eyebrow{font:11px/1.5 var(--mono);letter-spacing:.09em;text-transform:uppercase;display:block;color:var(--green);margin-bottom:20px}.button{display:inline-flex;align-items:center;gap:40px;padding:14px 20px;background:var(--blue);color:#fff;font-size:14px;line-height:1.5;text-decoration:none;font-weight:600;border:1px solid var(--blue)}.button:hover{background:#143f9f;color:#fff}.text-link{font-size:14px;font-weight:650;text-decoration:none}.section{padding:64px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:32px;margin-bottom:32px}.section-head h2{margin:0;max-width:680px}.section-head .eyebrow{margin-bottom:12px}.section-head p{max-width:320px;margin:0;font-size:14px;color:var(--muted)}.row-meta{font:11px/1.6 var(--mono);color:var(--muted)}
/* A working manual, rather than the first publication's magazine cover. */
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/* Shared routes adopt the same typography, rhythm and technical identity. */
.page-head{padding:56px 0 40px;max-width:1000px}.page-head h1{margin-bottom:24px}.lead{font-size:19px;line-height:1.7;color:var(--muted);max-width:780px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;padding-top:32px;font:11px/1.6 var(--mono);color:var(--muted)}.breadcrumbs a{text-decoration:none}.article-group{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;padding:32px 0;border-top:1px solid var(--line)}.group-label{font-size:20px;line-height:1.4;margin:8px 0}.group-label a{text-decoration:none}.article-list{list-style:none;padding:0;margin:0;min-width:0}.article-row{display:grid;grid-template-columns:24px minmax(0,1fr) 20px;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);text-decoration:none}.article-row h3{font-size:24px;line-height:1.3;margin-bottom:12px}.article-row p{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:16px}.row-num{font:11px var(--mono);color:var(--blue);padding-top:7px}.row-arrow{font-size:22px;color:var(--blue)}.topic-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}.chip{padding:8px 12px;font-size:12px;text-decoration:none;border:1px solid var(--line);background:#fff}.chip:hover,.chip[aria-current=page]{background:var(--green-light);color:var(--blue);border-color:#a8bfe9}.topics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}.topic{padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none}.topic:hover{background:var(--wash)}.topic .num{display:block;font:11px var(--mono);color:var(--blue);margin-bottom:24px}.topic h3{font-size:24px;margin-bottom:16px}.topic p{font-size:14px;color:var(--muted)}.topic .count{font:11px var(--mono);color:var(--blue)}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(180px,1fr);gap:64px;padding-bottom:64px}.article-layout>article{min-width:0}.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;margin-bottom:32px;font:11px/1.7 var(--mono);color:var(--muted)}.article-meta a{color:var(--blue)}.article-body,.prose{font-size:17px;line-height:1.85;max-width:760px}.article-body>p:first-child{font-size:19px;line-height:1.75;color:var(--ink)}.article-body h2,.prose h2{font-size:30px;line-height:1.25;margin-top:48px;margin-bottom:24px;letter-spacing:-.03em}.article-body h3,.prose h3{font-size:23px;margin-top:32px;line-height:1.35}.article-body a,.prose a{color:var(--blue);overflow-wrap:anywhere}.article-body li,.prose li{margin-bottom:12px}.article-body ul,.article-body ol,.prose ul,.prose ol{padding-left:24px}.article-body table{display:block;overflow-x:auto;border-collapse:collapse;font-size:13px;line-height:1.65;margin:32px 0;max-width:100%}.article-body th,.article-body td{padding:16px;border:1px solid var(--line);min-width:130px;text-align:left;vertical-align:top}.article-body th{background:var(--wash);font-weight:600}.sidebar{position:sticky;top:32px;align-self:start;padding:24px;border:1px solid var(--line);border-top:4px solid var(--blue);background:var(--wash)}.sidebar h2{font-size:24px;margin-bottom:16px}.sidebar p{font-size:14px;color:var(--muted)}.sidebar a{display:block;font-size:13px;margin-top:16px;color:var(--blue)}.sidebar .eyebrow{font-size:10px}.sources{margin-top:48px;border-top:1px solid var(--line);padding-top:32px}.sources h2{font-size:27px}.sources>p{font-size:14px;color:var(--muted)}.source{border-bottom:1px solid var(--line);padding:20px 0;font-size:14px;overflow-wrap:anywhere}.source>a{font-weight:600;color:var(--blue)}.source p{margin:8px 0;color:var(--muted);font-size:13px}.sources .article-row h3{font-size:20px}.sources .article-row{padding:20px 0}.prose{padding-bottom:48px}.prose>h1{margin-top:48px}.prose .lead{font-size:19px}.metadata{font:11px var(--mono);color:var(--muted)}.empty{padding:32px;background:var(--wash);color:var(--muted)}footer{background:var(--wash);border-top:1px solid var(--line);padding:32px 0}.footer-main{display:flex;justify-content:space-between;gap:32px;font-size:12px;color:var(--muted)}.footer-links{display:flex;flex-wrap:wrap;gap:16px;align-items:start}.footer-links a{text-decoration:none}.skip-link{position:absolute;top:-100px;left:16px;padding:12px;background:var(--navy);color:#fff;z-index:10}.skip-link:focus{top:8px}.methodology-body>section{padding-top:24px;margin-top:32px;border-top:1px solid var(--line)}.research-note{background:var(--wash);border-left:4px solid var(--blue);padding:24px}.research-note h2{margin-top:0}.process-list{padding-left:24px}.process-list>li{padding-left:8px;margin-bottom:32px}.process-list h3{margin-bottom:12px}.table-wrapper{overflow-x:auto;border:1px solid var(--line);margin:32px 0}.methodology 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@media(min-width:1500px){.manual-hero{gap:80px}}
@media(max-width:1000px){.wrap{padding-left:32px;padding-right:32px}.site-header{gap:24px}.site-header nav{gap:16px}.manual-hero{gap:32px}.manual-intro h1{font-size:56px}.manual-stats{gap:24px}.manual-evidence{display:none}.manual-start{grid-template-columns:160px 1fr 40px;gap:24px;padding:24px}.article-layout{gap:32px;grid-template-columns:minmax(0,1fr) 220px}.article-group{grid-template-columns:180px minmax(0,1fr);gap:32px}}
@media(max-width:760px){.wrap{padding-left:24px;padding-right:24px}.site-header{align-items:start;flex-direction:column;gap:20px;padding-top:20px;padding-bottom:20px}.site-header nav{gap:20px;font-size:12px;width:100%;justify-content:space-between}.manual-hero{grid-template-columns:1fr;padding-top:40px;gap:32px}.manual-intro h1{font-size:clamp(44px,8vw,62px);max-width:620px}.manual-intro>p{font-size:16px}.manual-stats{gap:32px;margin-top:32px}.manual-evidence{display:block}.manual-contents{padding:24px}.manual-contents>a{padding:12px 0}.manual-start{grid-template-columns:1fr 40px;gap:24px;margin-top:0}.manual-start-label{grid-column:1/-1}.manual-start-label p{display:none}.manual-start-label .eyebrow{margin:0}.manual-start h2{font-size:24px}.manual-topic-grid{grid-template-columns:1fr}.manual-topic{padding:24px;grid-template-columns:32px minmax(0,1fr) 20px}.manual-guide-grid{grid-template-columns:1fr}.manual-guide{padding:24px}.manual-standards{grid-template-columns:1fr;padding:32px;gap:24px;margin-bottom:40px}.manual-standards h2{font-size:32px}.manual-standards .eyebrow{margin:0}.manual-standards p{margin-bottom:16px}.section{padding:40px 0}.section-head{align-items:start;flex-direction:column;gap:16px;margin-bottom:24px}.section-head h2{font-size:30px}.section-head p{max-width:100%}.page-head{padding:40px 0 24px}.page-head h1{font-size:38px}.lead{font-size:17px}.topics{grid-template-columns:1fr}.article-group{grid-template-columns:1fr;gap:8px;padding:24px 0}.group-label{font-size:19px}.article-row{gap:12px;grid-template-columns:20px minmax(0,1fr) 16px}.article-row h3{font-size:22px}.article-row p{font-size:14px}.article-layout{grid-template-columns:1fr;gap:32px}.article-body,.prose{font-size:16px;line-height:1.8}.article-body>p:first-child{font-size:17px}.article-body h2,.prose h2{font-size:27px;margin-top:32px}.article-body h3{font-size:22px}.sidebar{position:static}.article-meta{font-size:10px;gap:8px 16px}.breadcrumbs{font-size:10px;padding-top:24px}.footer-main{flex-direction:column;gap:24px}.footer-links{gap:16px}.manual-guide h3{font-size:23px}.manual-stats{font-size:10px}}
@media(max-width:400px){.manual-evidence{display:none}.site-header nav{gap:12px;font-size:11px}.manual-intro h1{font-size:44px}.manual-contents{padding:20px}.manual-topic{padding:24px 16px;gap:12px}.manual-standards{padding:24px}.manual-start{padding:24px 20px;gap:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}