/* Reading presentation layer. Data, question banks and page-owned tools stay authoritative. */
:root { --edu-page:#f6f9fc; --edu-surface:#fff; --edu-primary:#2563eb; --edu-heading:#1e40af; --edu-body:#1e293b; --edu-muted:#475569; --edu-border:#dce6f0; --edu-soft:#eff6ff; }
body.edu-study-page :is(.formula-deck p,.money-cards p) { font-size:16px; line-height:1.7; overflow-wrap:break-word; }
body.edu-home-page p.text-xs, body.edu-home-page :is(header,nav) p { font-size:13px; line-height:1.5; color:var(--edu-muted); }
body.edu-home-page p:not(:where(header *,nav *,footer *)) { line-height:1.7; }
body.edu-home-page p.text-sm:not(:where(header *,nav *,footer *,#practice-courses *)) { font-size:16px; }
body.edu-home-page footer p { line-height:1.5; }
body.edu-study-page, body.edu-practice-page, body.edu-home-page { background:var(--edu-page); color:var(--edu-body); }
body.edu-study-page main { min-width:0; }
body.edu-study-page .tab-content { overflow-wrap:anywhere; }
/* Paragraph reading roles exclude data cells and diagrams. Inline legacy sizes
   in source examples should not shrink reading prose or its supporting notes. */
body.edu-study-page .tab-content p:not(:where(table *,svg *,[role="table"] *)) { font-size:16px !important; line-height:1.7 !important; }
body.edu-study-page .tab-content :is(p.text-xs,p.hint,p.helper,p.micro-note,p.status-note,p.limitation,p.source-limit,p.source-warning,p.callout-body,p.source-note,p.center-note,p.interaction-hint,p.label-small,p.muted,p.soft-warning,.source-limit p,.source-warning p) { font-size:15px !important; line-height:1.65 !important; }
body.edu-study-page .tab-content :is(p.source-ref,p.source-tag,p.source-caption,p.learn-kicker,p.section-label,p.interaction-kicker,p.kicker,p.pill,p.badge,p.flash-label,p.eyebrow,p.interaction-badge) { font-size:13px !important; line-height:1.5 !important; }
body.edu-study-page .tab-content :is(td,th) { overflow-wrap:normal; word-break:normal; }
body:is(.edu-study-page,.edu-practice-page) .edu-number-cell { white-space:nowrap; min-width:6em; }
body.edu-study-page.edu-route-NLKT .coa-table :is(td,th):first-child { white-space:nowrap; min-width:84px; }
/* Long source terms also reflow when the student enlarges text. */
body.edu-study-page .tab-content :is(p,li,h3,h4,strong,.pill,.t-title,.acct-name,.flip-front,.flip-back) { overflow-wrap:anywhere; }
body.edu-study-page :is(.account-grid,.grid-3,.grid-4,.grid-5,.trio,.pill-row,.flash-grid,.flip-inner) > * { min-width:0; }
body.edu-study-page.edu-route-KTTC .account-grid { grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr)); }
body.edu-study-page.edu-route-KTTC :is(.flow-arrow small,.flow-node span,.flow-node small) { font-size:13px; line-height:1.5; white-space:normal; }
@media (max-width:760px) {
  body.edu-study-page.edu-route-KTTC .flow-arrow { transform:none; }
  body.edu-study-page.edu-route-KTTC .edu-flow-symbol { display:inline-block; transform:rotate(90deg); }
}
body.edu-study-page .pill { max-width:100%; }
body.edu-study-page :is(.mini-badge,.chapter-objective,.learn-card-body,.edu-choice,summary,.study-flip-face) { white-space:normal; overflow-wrap:anywhere; }
body.edu-study-page :is(.study-flip-inner,.study-flip-face) { min-width:0; }
body.edu-study-page .study-guide-check { color:#0f766e; }
body.edu-study-page .flow-arrow, body.edu-study-page .muted { color:var(--edu-muted); }
body.edu-study-page .flip-front small { color:var(--edu-muted); }
body.edu-study-page :is(.compare-vs,.sort-handle) { color:var(--edu-muted); }
body.edu-study-page :is(.text-teal-500,.text-teal-600) { color:#0f766e; }
body.edu-study-page .text-green-600 { color:#15803d; }
body.edu-study-page .text-amber-600 { color:#b45309; }
body.edu-study-page .bg-teal-600 { background-color:#0f766e; }
body.edu-study-page .bg-orange-600 { background-color:#c2410c; }
body.edu-study-page.edu-route-NMLH .text-stone-500 { color:var(--edu-muted); }
body.edu-study-page.edu-route-NMLH p.text-blue-600 { color:#1d4ed8; }
body.edu-study-page.edu-route-NLTTTC .accent-card p { color:var(--edu-muted); }
body.edu-study-page.edu-route-NLTTTC .accent-card.amber > span { color:#b45309; }
body.edu-study-page.edu-route-NLTTTC :is(.flip-front em,.flow-mid > span) { color:var(--edu-muted); font-size:13px; line-height:1.5; }
body.edu-study-page.edu-route-NLTTTC :is(.solution-columns small,.accent-card small) { color:var(--edu-muted); font-size:15px; line-height:1.65; }
body.edu-study-page.edu-route-VHDDTKD .culture-matrix small { color:var(--edu-muted); }
body.edu-study-page.edu-route-STKN :is(.drag-handle,.big-arrow) { color:var(--edu-muted); }
body.edu-study-page.edu-route-STKN :is(.ares-arrow,.reveal-hint) { color:var(--edu-muted); }
body.edu-study-page.edu-route-STKN :is(.source-prompt-stack,.source-exercise-brief) :is(p,li,b,strong,small) { color:var(--edu-body); }
body.edu-study-page.edu-route-STKN .barrier-selfcheck { color:var(--edu-body); }
body.edu-study-page.edu-route-STKN .worked-quad small { color:var(--edu-muted); }
body.edu-study-page.edu-route-STKN .source-activity-card small { color:var(--edu-muted); }
body.edu-study-page.edu-route-VHDDTKD .q small { color:var(--edu-muted); }
body.edu-study-page.edu-route-TLUD .arrow { color:var(--edu-muted); }
body.edu-study-page.edu-route-STKN .venn.dfv .c1 > span { color:#92400e; }
body.edu-practice-page .bg-teal-600 { background-color:#0f766e; }
body.edu-practice-page :is(header,nav) .text-green-600 { color:#15803d; font-size:13px; }
body.edu-practice-page :is(.bg-amber-500,.hover\:bg-amber-600:hover) { background-color:#b45309; }
body.edu-practice-page #practice-content p { overflow-wrap:anywhere; }
body.edu-practice-page .tab-content p:not(:where(table *,svg *,[role="table"] *,#overview-stats *)) { font-size:16px; line-height:1.7; }
body.edu-practice-page .tab-content :is(.pill,.badge,.kicker) { font-size:13px; line-height:1.5; }
body.edu-study-page.edu-route-TCCN .pill.font-bold.text-teal-700 { flex-shrink:0; white-space:nowrap; overflow-wrap:normal; }
/* Secondary labels must remain readable on the original pale gradient surfaces. */
body.edu-study-page.edu-route-KTTC :is(.t0,.t20,.t50,.t100) { color:var(--edu-muted); font-size:13px; line-height:1.5; }
body.edu-study-page.edu-route-KTQT .eyebrow { color:var(--edu-muted); font-size:13px; line-height:1.5; }
body.edu-study-page.edu-route-TCCN :is(.kicker,.flash-label,.study-flip-face small,.review-map-node span,.text-slate-500,.text-slate-400,.text-slate-300) { color:var(--edu-muted); }
body.edu-study-page.edu-route-TCCN :is(.flash-label,.study-flip-face small,.review-map-node span) { font-size:13px; line-height:1.5; }
body.edu-study-page.edu-route-TCCN .skeleton-cell { color:var(--edu-muted); font-size:16px; line-height:1.65; }
@media(max-width:640px) {
  body.edu-study-page.edu-route-TCCN .flex:has(> .text-2xl.text-slate-400) { flex-direction:column; }
  body.edu-study-page.edu-route-TCCN .flex:has(> .text-2xl.text-slate-400) > .text-2xl { transform:rotate(90deg); }
}
body.edu-home-page button.text-stone-500 { color:#57534e; font-size:13px; line-height:1.5; }
/* Reserve room for the announcement close control without enlarging its icon. */
body.edu-home-page button { min-width:44px; min-height:44px; }
body.edu-home-page #global-announcement button[aria-label] { display:grid; place-items:center; z-index:20; }
body.edu-home-page #global-announcement .space-y-1 > .flex:first-child { padding-right:36px; }
body.edu-home-page #global-announcement .space-y-1 > .text-stone-600 { font-size:16px; line-height:1.7; }
body.edu-study-page.edu-route-TCCN .flex:has(> .text-2xl.text-slate-400) > .font-black { white-space:nowrap; flex-shrink:0; }
@media (max-width:640px) {
  /* A rotated full-width arrow otherwise covers neighboring phone controls. */
  body.edu-study-page.edu-route-NLKT .flow-arrow { width:1.5em; height:1.5em; min-width:0; align-self:center; flex:none; }
}
body.edu-study-page.edu-route-STKN .flip-front small { color:inherit; }
body.edu-study-page.edu-route-TLUD .ice-conscious { background:#0369a1; }
body.edu-study-page.edu-route-TLUD .pyr:is(.p2,.p3) { background:#0f766e; }
/* Give the hierarchy room for its full labels, including enlarged text. */
body.edu-study-page.edu-route-TLUD .svg-card:has(.pyramid) { grid-column:1 / -1; }
body.edu-study-page.edu-route-TLUD .pyr { min-width:min(100%,12em); overflow-wrap:normal; word-break:normal; }
body.edu-study-page.edu-route-VHDDTKD .distribution-labels { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:8px; }
body.edu-study-page.edu-route-VHDDTKD .distribution-labels span { min-width:0; width:auto; overflow-wrap:anywhere; }
body.edu-study-page :is(.course-intro-title, main > div:first-child > h1) { font-size:clamp(28px,3vw,34px); line-height:1.25; }
body.edu-study-page :is(.chapter-title, .tab-content > h2, .tab-content > header > h2) { font-size:26px; line-height:1.35; color:var(--edu-heading); overflow-wrap:break-word; }
body.edu-study-page :is(.section-title,.panel-title,.learn-title,.module-heading h3,.section-head h3,.learning-module > h3) { font-size:21px; line-height:1.4; color:var(--edu-heading); overflow-wrap:break-word; }
body.edu-study-page :is(.module-heading p,.section-head p,.learn-block > p,.learn-section > p,.learning-panel > p,.learning-module > p,.card-content p,.card-body p,.panel-body p,.prose p,.concept-card p,.chapter-objective,.source-detail,.worked-quad p,.micro-notes p) { font-size:16px; line-height:1.7; }
body.edu-study-page :is(.module-heading p,.section-head p,.learn-block > p,.learn-section > p,.learning-panel > p,.learning-module > p,.prose p) { max-width:78ch; }
body.edu-study-page :is(.hint,.helper,.micro-note,.status-note,.limitation,.source-limit,.source-warning,.callout-body,.source-limit p,.source-warning p) { font-size:15px; line-height:1.65; }
body.edu-study-page :is(.source-ref,.source-tag,.source-caption,.learn-kicker,.section-label,.interaction-kicker,.kicker,.pill,.badge,.flash-label,.eyebrow,.interaction-badge) { font-size:13px; line-height:1.5; white-space:normal; overflow-wrap:break-word; }
body.edu-study-page :is(.learn-panel,.learn-section,.learning-panel,.learning-module,.learn-block,.interaction,.review-hero,.review-flash) { border-radius:14px; min-width:0; }
body.edu-study-page :is(.card-head,.section-head,.interaction-head) { flex-wrap:wrap; gap:16px; }
body.edu-study-page :is(.card-head,.section-head,.interaction-head,.module-heading) > * { min-width:0; }
body.edu-study-page :is(.grid,.grid-auto,.gallery,.flash-grid,.flip-grid,.workspace-grid,.scenario-grid,.two-col,.concept-grid,.compare-grid) > * { min-width:0; }
body.edu-study-page :is(input:not([type=radio]):not([type=checkbox]),select,textarea), body.edu-practice-page :is(input,select,textarea) { font-size:16px; min-height:44px; max-width:100%; }
body.edu-study-page main :is(button,.btn,.edu-choice), body.edu-practice-page :is(button,.btn) { min-height:44px; min-width:44px; }
body.edu-study-page main summary { min-height:44px; padding-block:10px; cursor:pointer; }
#nav-user-profile { min-height:44px; }
body.edu-study-page :is(button,a,summary,select,textarea,input):focus-visible, body.edu-practice-page :is(button,a,select):focus-visible { outline:3px solid var(--edu-primary); outline-offset:3px; }
body:is(.edu-study-page,.edu-practice-page) [tabindex="0"]:focus-visible { outline:3px solid var(--edu-primary); outline-offset:3px; }
body.edu-study-page :is(.scroll-table,.table-wrap,.table-scroll,.graph-shell,.svg-shell,.mindmap-scroll) { max-width:100%; overflow-x:auto; overscroll-behavior-x:contain; scrollbar-width:thin; }
body.edu-study-page :is(.scroll-table,.table-wrap,.table-scroll) :is(th,td) { font-size:14px; line-height:1.6; }
.edu-scroll-cue { display:block; margin:6px 0; color:var(--edu-muted); font-size:13px; line-height:1.5; }
.edu-scroll-cue[hidden] { display:none; }
.edu-scroll-region { max-width:100%; overscroll-behavior-x:contain; scrollbar-width:thin; }
.edu-chapter-toc { margin:16px 0 24px; padding:12px 16px; border:1px solid var(--edu-border); border-radius:12px; background:var(--edu-surface); }
.edu-chapter-toc summary { min-height:44px; display:list-item; align-content:center; font-weight:750; color:var(--edu-heading); cursor:pointer; }
.edu-chapter-toc ol { padding-left:24px; margin:8px 0; }
.edu-chapter-toc a { display:inline-block; max-width:100%; padding:6px 0; color:var(--edu-heading); line-height:1.5; overflow-wrap:anywhere; }
.edu-reading-anchor { scroll-margin-top:calc(var(--edu-visible-header,64px) + 24px); }
.edu-incomplete { padding:16px; border:1px dashed #94a3b8; border-radius:12px; margin:16px 0; background:#f8fafc; }
.edu-incomplete > summary { min-height:44px; cursor:pointer; color:var(--edu-heading); font-weight:750; }
.edu-incomplete .concept-grid { display:block; }
.edu-incomplete .concept-card { padding:8px 0; border:0; box-shadow:none; background:transparent; }
.edu-incomplete .concept-card h4, .edu-incomplete .concept-card p { display:inline; margin-right:8px; }

/* Both faces contribute to height; retain the existing 3D transforms and events. */
body.edu-study-page:is(.edu-route-NLKT,.edu-route-NLTTTC,.edu-route-STKN,.edu-route-TLUD,.edu-route-VHDDTKD) :is(.flip-card-local,.flip-card):has(> :is(.flip-inner-local,.flip-inner)) { height:auto; min-height:160px; }
body.edu-study-page:is(.edu-route-NLKT,.edu-route-NLTTTC,.edu-route-STKN,.edu-route-TLUD,.edu-route-VHDDTKD) :is(.flip-inner-local,.flip-inner) { display:grid; width:100%; height:auto; min-height:160px; }
body.edu-study-page:is(.edu-route-NLKT,.edu-route-NLTTTC,.edu-route-STKN,.edu-route-TLUD,.edu-route-VHDDTKD) :is(.flip-inner-local,.flip-inner) > :is(.flip-face,.flip-front,.flip-back) { position:relative; inset:auto; grid-area:1 / 1; height:auto; min-height:160px; padding:20px; font-size:16px; line-height:1.65; }
body.edu-study-page :is(.flip-face,.flip-front,.flip-back) strong { font-size:16px; line-height:1.65; }
body.edu-study-page :is(.flip-face,.flip-front,.flip-back) small { font-size:13px; line-height:1.5; }

/* Navigation preserves #nav-menu and the page's chapter API. */
.edu-subject-header .edu-chapter-navigation { display:grid; grid-template-columns:44px minmax(0,1fr) 44px; gap:6px; align-items:center; }
.edu-subject-header .chapter-nav { justify-content:flex-start; scrollbar-width:thin; padding:6px 0; }
.edu-subject-header .chapter-nav .nav-btn { min-height:44px; color:var(--edu-muted); }
.edu-subject-header .chapter-nav .nav-btn:hover { color:var(--edu-heading); background:var(--edu-soft); }
.edu-subject-header .chapter-nav .nav-btn.tab-active { color:#fff; background:var(--edu-primary); border-color:var(--edu-primary); }
.edu-chapter-arrow { width:44px; height:44px; border:1px solid var(--edu-border); border-radius:10px; background:white; color:var(--edu-heading); font-size:24px; }
.edu-chapter-arrow:disabled { opacity:.35; }
.edu-theory-picker { display:none; }
.edu-theory-picker select { width:100%; min-height:44px; font-size:16px; border:1px solid var(--edu-border); border-radius:10px; background:white; padding:8px 12px; color:var(--edu-heading); font-weight:700; }
.study-practice-link { background:var(--edu-primary); }

/* Practice has separate navigation and grading; this layer only styles it. */
body.edu-practice-page #overview > div:first-child { border-color:var(--edu-border); background:white; }
body.edu-practice-page #overview :is(.bg-slate-900,.bg-stone-900) { background:var(--edu-soft); color:var(--edu-body); border:1px solid var(--edu-border); box-shadow:none; }
body.edu-practice-page #overview :is(.bg-slate-900,.bg-stone-900) :is(.text-white,.text-stone-300,.text-teal-300,.text-slate-300) { color:var(--edu-body); }
body.edu-practice-page #overview-stats > div { background:white; border-color:var(--edu-border); }
body.edu-practice-page #overview-stats :is(.text-stone-300,.text-slate-300) { color:var(--edu-muted); }
body.edu-practice-page :is(.option-card,.answer-btn,#question-list p,.exercise-card > p,#practice-desc) { font-size:16px; line-height:1.65; }
body.edu-practice-page .exercise-card { min-height:0; }
body.edu-practice-page .chapter-nav .tab-active { color:var(--edu-heading); border-color:var(--edu-primary); }
body.edu-practice-page #mobile-nav { min-height:44px; font-size:16px; color:var(--edu-heading); }
body.edu-practice-page #practice-content { padding-bottom:calc(6rem + env(safe-area-inset-bottom)); }
body.edu-practice-page #practice-content .sticky { bottom:max(8px,env(safe-area-inset-bottom)); flex-wrap:wrap; }
body.edu-home-page .course-card { padding:20px !important; border-radius:14px; }
body.edu-home-page .course-card > p { font-size:16px !important; line-height:1.65 !important; }
body.edu-home-page .course-card > h3 { font-size:20px !important; line-height:1.4 !important; }
body.edu-home-page #practice-courses p { font-size:15px; line-height:1.65; }
body.edu-home-page #practice-courses a { min-height:44px; }
body.edu-home-page #online-count, body.edu-home-page .text-green-600 { color:#15803d; }
body.edu-home-page .text-teal-600 { color:#0f766e; }
body.edu-home-page .text-emerald-600 { color:#047857; }
body.edu-home-page .text-amber-600 { color:#b45309; }
body.edu-home-page .course-card > .absolute.text-white { background:var(--edu-primary); font-size:13px; }
body.edu-home-page .cursor-not-allowed { opacity:1; }
body.edu-home-page .cursor-not-allowed .text-stone-400 { color:var(--edu-muted); }

/* Subject-specific containers use their own semantic colors. */
body.edu-study-page.edu-route-TLUD :is(.grid-auto,.flip-grid) { grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr)); }
body.edu-study-page.edu-route-TLUD .gallery { grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr)); }
body.edu-study-page.edu-route-TLUD :is(.match-columns,.match-list,.match-item) { min-width:0; max-width:100%; }
body.edu-study-page.edu-route-TLUD .match-item { white-space:normal; overflow-wrap:break-word; font-size:16px; }
body.edu-study-page.edu-route-TLUD button.match-item { display:block; overflow-wrap:anywhere; }
body.edu-study-page .tab-content :is(.quiz-row,.quiz-item,.quiz-q,.classifier,.account-card,.path-card,.factor,.exercise-grid,.quote-defs,.comparison-hub,.knowledge-card,.learning-card,.card,.panel,.example-card,.source-data-visual,.scenario,.detail-body) p { font-size:16px; line-height:1.7; }
body.edu-study-page .tab-content :is(p.text-sm,p.small) { font-size:16px; line-height:1.7; }
body.edu-study-page .tab-content :is(p.text-xs,p.source-note,p.center-note,p.interaction-hint) { font-size:15px; line-height:1.65; }
body.edu-study-page.edu-route-TLUD p.label-small { font-size:15px; line-height:1.65; }
body.edu-study-page.edu-route-PTBV .compare-cell p { font-size:16px; line-height:1.7; }
body.edu-study-page.edu-route-LTMQT .tab-content :is(p,li) { overflow-wrap:anywhere; }
body.edu-practice-page #overview :is(.bg-slate-900,.bg-stone-900) p { font-size:16px; line-height:1.65; color:var(--edu-body); }
body.edu-practice-page #overview-stats .text-xs { font-size:13px; line-height:1.5; }
body.edu-study-page.edu-route-STKN :is(.quad-cards,.aeiou-grid,.trait-grid,.bmc-cell,.confuse-grid,.source-exercise-brief,.source-prompt-stack,.bmc-layout-note,.worked-quad,.scenario-grid,.swot-grid) p { font-size:16px; line-height:1.7; }
body.edu-study-page.edu-route-NMLH #ch5 .bg-white.h-full:has(> p) { height:auto; }
body.edu-study-page.edu-route-TLUD .matrix4 { grid-template-columns:minmax(110px,.8fr) minmax(150px,1fr) minmax(150px,1fr); min-width:460px; overflow:visible; font-size:16px; }
body.edu-study-page.edu-route-LTMQT .flash-grid { grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr)); }
body.edu-study-page.edu-route-LTMQT .sort-item { flex-wrap:wrap; gap:12px; }
body.edu-study-page.edu-route-LTMQT .sort-item > span { flex:1 1 180px; min-width:0; }
body.edu-study-page.edu-route-LTMQT .sort-actions { flex-shrink:0; }
body.edu-study-page.edu-route-LTMQT .flow-row .flow-node { min-width:170px; flex:0 0 170px; }
body.edu-study-page.edu-route-VHDDTKD .layer-stage { flex-direction:column; gap:16px; }
body.edu-study-page.edu-route-VHDDTKD .layer-stage > :first-child { flex-shrink:0; max-width:100%; }
body.edu-study-page.edu-route-VHDDTKD .onion { width:min(260px,100%); height:auto; aspect-ratio:1; border-width:12px; box-shadow:inset 0 0 0 22px #fb7185,inset 0 0 0 44px #a78bfa,inset 0 0 0 66px #60a5fa; }
body.edu-study-page.edu-route-VHDDTKD .onion span { max-width:100%; text-align:center; }
body.edu-study-page.edu-route-VHDDTKD .barstack { min-height:32px; }
body.edu-study-page.edu-route-VHDDTKD .barstack > span { padding:0; min-width:0; min-height:32px; }
.edu-data-legend { display:flex; flex-wrap:wrap; gap:8px 16px; margin-top:12px; font-size:16px; line-height:1.65; }
.edu-data-legend > span { flex:1 1 160px; }
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