/* Interior pages rely on their content, not a repeated marketing composition. */
.interior-page .chapter-hero{padding-bottom:65px}
.interior-page .chapter-contents{background:none;border-block:1px solid #292929}
.interior-page .guide-section{display:block;max-width:1100px;padding-block:52px}
.interior-page .guide-section>.guide-heading,.interior-page .guide-section:has(.assessment-catalog)>.guide-heading,.interior-page .guide-section:has(.role-paths)>.guide-heading{max-width:760px;margin-bottom:30px}
.interior-page .guide-heading h2{font-size:30px;line-height:1.2;letter-spacing:-.03em}
.interior-page .guide-heading>div>p{font-size:16px;color:#999;line-height:1.8;margin-top:18px}
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.interior-page .guide-rows h3{font-size:19px;line-height:1.4}
.interior-page .guide-rows p{font-size:15px;color:#aaa}
.interior-page .guide-rows article:first-child{padding-top:22px;border-top:1px solid #333}
.interior-page .assessment-catalog{display:block}
.interior-page .assessment-catalog>a,.interior-page .assessment-catalog>a+a{display:block;background:none;color:#eee;border:0;border-top:1px solid #3a3a3a;padding:28px 0}
.interior-page .assessment-catalog>a>div{display:grid;grid-template-columns:1fr 2fr;gap:17px 35px}
.interior-page .assessment-catalog h3{grid-row:1/span 2;font-size:31px;margin:0}
.interior-page .assessment-catalog p{margin:0;font-size:16px;color:#aaa;max-width:650px}
.interior-page .assessment-catalog>a>div>span:last-child{grid-column:2;margin:0;font-size:13px;color:var(--section-accent)}
.interior-page .role-paths{display:block}
.interior-page .role-paths article{padding:25px 0;border-top:1px solid #333;display:grid;grid-template-columns:1fr 2fr;gap:16px 35px}
.interior-page .role-paths h3{font-size:23px;margin:0;line-height:1.35;grid-row:1/span 3}
.interior-page .role-paths p{margin:0;font-size:16px;line-height:1.8;color:#aaa}
.interior-page .role-paths .route-link{grid-column:2;border:0;justify-content:flex-start;gap:25px;padding:3px 0;color:#bbb;justify-self:start}
.interior-page .role-paths .route-link>span{color:var(--section-accent)}
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.interior-page .journey-ledger h3{font-size:21px;line-height:1.4}
.interior-page .journey-ledger p{grid-column:auto;font-size:15px}
.interior-page .audience-next{background:none;color:#ddd;border-color:#333;max-width:1600px;padding-block:42px}
.interior-page .audience-next h2{font-size:28px;line-height:1.25}
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.interior-page .audience-next .route-link{color:#ddd;border-color:#666}
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.interior-page .research-in-context{display:block;padding-top:0;padding-bottom:55px}
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.interior-page .research-reading-note h2{font-size:27px}
.interior-page .research-reading-note p{font-size:15px;color:#999}
.interior-page .article-illustration{max-width:700px;margin-top:36px}
.interior-page .article-illustration>.clarity-visual{min-height:240px}
.interior-page .article-illustration>.observation-visual{padding:30px 50px}
.interior-page .system-explorer{padding-top:0;padding-bottom:60px}
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.interior-page .explorer-title h2{font-size:31px;line-height:1.2}
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.interior-page .system-state-record>span{font-size:13px;color:#999}
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.interior-page .system-state-record>p{border-color:#333;font-size:16px;color:#bbb;line-height:1.8}
.interior-page .system-state-record>small{color:#888}
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.interior-page .system-perspectives h2{font-size:30px}
.interior-page .system-perspectives>div>p{max-width:750px;font-size:16px;color:#aaa}
.interior-page .system-perspective-links{margin-top:27px;display:grid;grid-template-columns:1fr 1fr;gap:40px}
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.interior-page .system-boundaries>h2{font-size:29px}
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.interior-page .system-boundaries p{font-size:15px;color:#aaa}
.interior-page .chapter-contact{padding-block:42px 55px}
.interior-page .chapter-contact h2{font-size:29px}
.interior-page .chapter-contact>p{font-size:16px;max-width:760px}
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.interior-page .academy-contact h2{font-size:32px}
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.interior-page .academy-price-grid article>span{color:#999}
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.interior-page .principles-return h2{font-size:40px}
.interior-page .principles-return a{color:#bbb;border-color:#666}
@media(max-width:760px){
 .interior-page .chapter-hero{padding-bottom:43px}
 .interior-page .guide-section{padding-block:38px}
 .interior-page .guide-heading h2{font-size:28px}
 .interior-page .guide-rows article{grid-template-columns:1fr;gap:12px}
 .interior-page .guide-rows h3{font-size:21px}
 .interior-page .guide-rows p{font-size:14px}
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 .interior-page .assessment-catalog h3{font-size:29px}
 .interior-page .assessment-catalog p{font-size:15px;margin-top:17px}
 .interior-page .assessment-catalog>a>div>span:last-child{margin-top:18px}
 .interior-page .role-paths h3{font-size:24px}
 .interior-page .role-paths p{font-size:15px;margin-top:17px}
 .interior-page .role-paths .route-link{margin-top:15px}
 .interior-page .journey-ledger article{grid-template-columns:22px 1fr;gap:12px 18px}
 .interior-page .journey-ledger p{grid-column:2;font-size:14px}
 .interior-page .audience-next h2{font-size:27px}
 .interior-page .research-in-context{padding-bottom:38px}
 .interior-page .research-in-context h2{font-size:30px}
 .interior-page .research-in-context>div>p{font-size:16px}
 .interior-page .article-illustration>.observation-visual{padding:24px}
 .interior-page .system-state{gap:30px;min-height:0}
 .interior-page .system-state-record{padding-left:20px}
 .interior-page .system-state-copy h3{font-size:24px}
 .interior-page .system-perspective-links{grid-template-columns:1fr;gap:15px}
 .interior-page .system-boundaries>div{gap:26px}
 .interior-page .principles-return h2{font-size:33px}
}
/* Research notation belongs to the reading flow, without an alert-style panel. */
.interior-page .perspective-prose .perspective-formula{background:transparent;color:#e0e0e0;border:0;padding:8px 0 0;margin:38px 0 35px;box-shadow:none}
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.interior-page .technical-detail{border:0;border-bottom:1px solid #333;margin:30px 0}
.interior-page .technical-detail summary{padding:17px 0;font-size:15px;line-height:1.6;color:#bbb}
.interior-page .technical-detail>div{font-size:16px;line-height:1.85;color:#a5a5a5;padding:5px 0 23px}
.interior-page .article-boundary{border:0;padding-top:0;margin-top:30px}
.interior-page .article-boundary>p{font-size:13px;line-height:1.8;color:#888}
.interior-page .article-layout>aside>span{font-size:12px;font-weight:400;letter-spacing:0;color:#888;margin-bottom:3px}
@media(max-width:760px){
 .interior-page .perspective-prose .perspective-formula{margin:28px 0;padding:3px 0 0}
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 .interior-page .technical-detail{margin:25px 0}
 .interior-page .technical-detail summary{font-size:14px}
 .interior-page .technical-detail>div{font-size:14px}
}
/* Overview opening: the contents sit at the bottom of the first viewport. */
.page-students .audience-opening,.page-educators .audience-opening{display:grid;grid-template-rows:auto 1fr auto;min-height:calc(100vh - 84px);min-height:calc(100svh - 84px)}
.page-students .audience-opening>.chapter-hero,.page-educators .audience-opening>.chapter-hero{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;width:100%;padding-top:clamp(36px,6vh,85px);padding-bottom:clamp(36px,6vh,85px)}
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@media(max-width:760px){
 .page-students .audience-opening,.page-educators .audience-opening{min-height:calc(100vh - 72px);min-height:calc(100svh - 72px)}
 .page-students .audience-opening>.chapter-hero,.page-educators .audience-opening>.chapter-hero{padding-block:32px}
}
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.page-students .audience-opening>.chapter-hero,.page-educators .audience-opening>.chapter-hero{gap:0}
/* Dense research notes retain the same quiet reading surface. */
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@media(max-width:760px){.interior-page .technical-study h1{font-size:36px}.technical-prose{font-size:16px;line-height:1.85}.technical-prose .technical-abstract{font-size:18px}.technical-prose h2{font-size:23px}.technical-equation>[role=math]{font-size:20px}.technical-study .article-layout>aside{font-size:11px}.technical-prose>section{margin-bottom:35px}}
.evidence-overview{padding-top:5px;padding-bottom:60px}
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.evidence-overview h2{font-size:37px;line-height:1.15;letter-spacing:-.035em}
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@media(max-width:760px){.evidence-plot>img{min-width:640px}}
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.original-research-figure{margin:40px 0 48px;scroll-margin-top:35px}
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.original-study-figures{max-width:1200px;margin:auto}
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/* Figures are steps in an argument, not a gallery. */
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.research-investigation+.research-investigation{padding-top:55px}
.figure-study{margin:45px 0 65px;scroll-margin-top:30px}
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.figure-study>header p{font-size:17px;line-height:1.85;color:#aaa;margin:0}
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.figure-argument{max-width:820px}
.figure-argument h4{font-size:23px;line-height:1.45;letter-spacing:-.02em;font-weight:450;color:#ddd;margin:0 0 20px}
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/* One research question at a time; the neutral field carries the composition. */
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/* Spatial evidence has its own reading pace, one original panel per argument. */
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