/* Canonical additions use the accepted Round 30 blue and existing type scale. */
:root{--action:#0072ce;--action-hover:#005da8;--ink:#18242c;--muted:#586773;--rule:#dbe1e5;--surface:#f5f7f9}
[hidden]{display:none!important}*{scroll-margin-top:7rem}.skip-link{position:fixed;top:8px;left:12px;z-index:999;background:#fff;color:var(--action);padding:12px 18px;border:2px solid var(--action);transform:translateY(-150%)}.skip-link:focus{transform:none}:focus-visible{outline:3px solid var(--action);outline-offset:4px}input,select,textarea{font:inherit}button,a,input,select,summary{touch-action:manipulation}.site-brand img{height:auto}.site-header{z-index:40}.site-nav>a:last-child{font-weight:600}.canonical-site main{min-height:60vh}.canonical-site .section-navigation{overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.canonical-opening{padding-top:52px;padding-bottom:32px;border-bottom:1px solid var(--rule)}.canonical-opening .eyebrow,.kicker{font:600 11px/1.4 monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--action)}.canonical-opening h1{font-size:clamp(38px,5vw,64px);font-weight:500;letter-spacing:-.045em;line-height:1.05;margin:18px 0 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@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.site-header,.section-navigation,.site-footer,.skip-link,.support-actions,.scenario-nav,.search-controls,.quick-links,.guide-download{display:none!important}.support-layout{display:block}.canonical-site main{min-height:0}.wrap{max-width:none!important;margin:0!important;padding:0!important}.canonical-opening{padding:0!important}.check-question{break-inside:avoid}.canonical-section{padding:15px 0}.next-check{background:#fff!important;border-left:2px solid #666}.field textarea{height:150px}a{color:#111!important}body{font-size:11pt!important;color:#111!important;background:#fff!important}}
.canonical-site .search-result h2{font-size:26px;line-height:1.25}.canonical-site .result-sections a,.canonical-site .quick-links a,.canonical-site .download-actions a,.canonical-site .guide-download a{color:#0071cc}.canonical-site .action-button{font-family:inherit;font-size:14px;font-weight:600}.canonical-site .secondary-button{font-family:inherit;font-size:14px;font-weight:600}
.canonical-site .notice{max-width:none}.print-observations{display:none}.canonical-site .section-navigation a.is-current{border-color:#0072ce;color:#0071cc}.canonical-site .site-nav .site-finder-link{border-color:#0072ce;color:#0071cc}.topic-index{margin:32px 0}.topic-index summary{cursor:pointer;font-weight:600}.topic-index h3{font-size:18px}.topic-index p{font-size:14px;line-height:1.6;color:#586773}.topic-index ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px}.topic-index li{border-top:1px solid #dbe1e5;padding-top:14px}@media(max-width:760px){.topic-index ul{grid-template-columns:1fr}}@media print{.observations>.field,.observations>.observation-pair,.support-privacy,.topic-index{display:none}.print-observations{display:block}.print-observations p{white-space:pre-wrap;overflow-wrap:anywhere;max-width:none!important}.print-observations h3{font-size:11pt}}
.canonical-site .coherent-reference{color:#262626}.canonical-site .coherent-reference h1,.canonical-site .coherent-reference h2,.canonical-site .coherent-reference h3,.canonical-site .coherent-reading strong{color:#262626}.canonical-site .coherent-reference a,.canonical-site .coherent-reference .coherent-jump a{color:#0071cc}.canonical-site .coherent-status{border-left-color:#0072ce;background:#f5f7f9;color:#586773}.canonical-site .coherent-reference .resource-kind::before{background:#0072ce}.canonical-site .coherent-table thead th,.canonical-site .coherent-gaps{background:#f5f7f9}.canonical-site .coherent-reference p,.canonical-site .coherent-reference dt,.canonical-site .coherent-gaps ul{color:#586773}.canonical-site .coherent-table table{font-family:Open,Arial,sans-serif}
/* Interactive worksheets */
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.worksheet-choices{display:flex;flex-direction:column}
.worksheet-choices a{padding:18px 16px;border-left:3px solid transparent;color:var(--ink);text-decoration:none}
.worksheet-choices a strong{font-size:14px;display:block}
.worksheet-choices a small{font-size:12px;line-height:1.6;color:var(--muted);display:block;margin:6px 0 0}
.worksheet-choices a:hover{color:var(--action)}
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.worksheet-status{color:var(--muted);font-size:12px;min-height:20px}
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.worksheet-note{font-size:13px;line-height:1.7}
.worksheet-fields{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px}
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/* Historical configuration styles hide the page during print; canonical references print their main content. */
@media print{body.canonical-site>main#main-content{display:block!important}}

/* Original engineering articles reuse the reference reading layout. */
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.engineering-article .article-opening h1{font-size:clamp(34px,4.3vw,58px);line-height:1.08;letter-spacing:-.035em;max-width:1000px}
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.engineering-article .article-diagram figcaption{font-size:12px;line-height:1.6;color:var(--muted);margin-top:16px;max-width:900px}
.engineering-article .guide-body{min-width:0}
.engineering-article .guide-body section{scroll-margin-top:120px}
.engineering-article .guide-body h2{font-size:28px;line-height:1.2;letter-spacing:-.02em}
.engineering-article .guide-body p,.engineering-article .guide-body li{font-size:16px;line-height:1.8}
.engineering-article .guide-body p{max-width:78ch}
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.engineering-article .example-table-wrap{overflow-x:auto;max-width:100%;margin:24px 0;border:1px solid var(--rule)}
.engineering-article .example-table-wrap table{border-collapse:collapse;width:100%;min-width:580px;font-size:14px;line-height:1.6}
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.engineering-article .example-table-wrap thead th{background:#f4f4f4;color:var(--ink)}
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.engineering-article .article-domains li+li:before{content:none}

@media screen{.engineering-article .guide-body>section+section{margin-top:36px}}
/* Engineering glossary and planning paths reuse the approved reference shell. */
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.glossary-page .resource-read{white-space:normal;font-size:13px;line-height:1.5}
.glossary-page [data-clear-search]{background:white;color:#0071cc;border:1px solid #c9d1d9;padding:8px 12px;border-radius:4px;margin-bottom:12px}
.glossary-page .notice{margin-top:30px}
.planning-grid,.planning-evidence{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:25px}
.planning-card{background:#fff;border:1px solid #dce1e6;border-top:3px solid #0072ce;padding:25px;display:flex;flex-direction:column}
.planning-card h3{font-size:23px;line-height:1.25;margin:18px 0 14px}
.planning-card h3 a{color:#20262c;text-decoration:none}
.planning-card h3 a:hover{text-decoration:underline}
.planning-card p{font-size:15px;line-height:1.65;color:#5b646e;margin:0 0 24px}
.planning-card-links{display:flex;flex-direction:column;gap:14px;margin-top:auto;font-size:14px}
.planning-overview h2{font-size:28px;line-height:1.3}
.planning-record{padding:48px 0 30px}
.planning-evidence article{border-top:1px solid #dce1e6;padding-top:20px}
.planning-evidence h3{font-size:19px;line-height:1.35;margin:14px 0}
.planning-evidence p{font-size:15px;line-height:1.65;color:#5b646e}
.planning-context-links{margin-top:30px;padding-top:24px;border-top:1px solid #dce1e6}
@media(max-width:1000px){.glossary-page .glossary-term{grid-template-columns:130px minmax(0,1fr);gap:14px}.glossary-page .resource-read{grid-column:2}.planning-grid{grid-template-columns:1fr}.planning-card{padding:24px}.planning-card-links{flex-direction:row;flex-wrap:wrap;gap:20px}.planning-card p{max-width:740px}.planning-evidence{gap:18px}}
@media(max-width:600px){.glossary-page .glossary-term{grid-template-columns:1fr;gap:10px}.glossary-page .resource-read{grid-column:auto}.glossary-page .glossary-term h3{font-size:20px}.planning-evidence{grid-template-columns:1fr}.planning-overview h2{font-size:24px}.planning-record{padding-top:35px}.planning-card h3{font-size:22px}}
@media print{.glossary-page .reference-search,.glossary-page .reference-filters,.glossary-page [data-clear-search],.glossary-page #reference-count{display:none!important}.glossary-page .glossary-term{break-inside:avoid;grid-template-columns:1fr;padding:12px 0}.planning-card{break-inside:avoid}.planning-grid,.planning-evidence{display:block}.planning-card{margin-bottom:18px}}

.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.glossary-page .reference-search button{background:var(--action)}
.glossary-page .reference-search button:hover{background:var(--action-hover)}
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.canonical-site.resources-page.planning-page .planning-overview h2{font-size:28px;line-height:1.3}
.canonical-site .planning-card-links a{color:#0071cc}
.canonical-site .planning-evidence h3{font-size:19px;line-height:1.35}
@media(max-width:600px){.canonical-site.resources-page.planning-page .planning-overview h2{font-size:24px}}
.canonical-site.glossary-page .glossary-term{grid-template-areas:"topic definition reading"}
.canonical-site.glossary-page .glossary-term>.resource-kind{grid-area:topic}
.canonical-site.glossary-page .glossary-term>div{grid-area:definition;min-width:0}
.canonical-site.glossary-page .glossary-term>.resource-read{grid-area:reading}
@media(max-width:1000px){.canonical-site.glossary-page .glossary-term{grid-template-areas:"topic definition" ". reading"}}
@media(max-width:600px){.canonical-site.glossary-page .glossary-term{grid-template-areas:"topic" "definition" "reading"}}
.canonical-site .planning-card h3 a{font:inherit;letter-spacing:inherit;padding:0;margin:0;border:0;display:inline}