/* Three Sides platform: a calm, contemporary place to teach, read and rehearse. */
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/* The teaching workspace has one stable navigation rail. */
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/* One visual system across the reading catalogue, practice tools and accounts. */
.learn-home{max-width:none}.learn-home>h1{margin-bottom:20px}.learn-home>p{font:1.02rem/1.8 var(--sans);color:var(--ink-2);max-width:80ch;margin-bottom:18px}.guide-families{gap:28px}.guide-families>section{padding:26px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.guide-families h2{font-size:1.25rem;margin-bottom:18px}.guide-families ul{padding:0;list-style:none}.guide-families li{border-color:var(--line)}.guide-families li>a{padding:16px 0;text-decoration:none}.guide-families li>a span:first-child{font-size:1.06rem;font-weight:700}.guide-families li>a span.small{font-size:.85rem;line-height:1.7;margin-top:6px;color:var(--ink-2)}#learn-history-title{margin:0 0 20px;padding:13px 15px;background:var(--accent-soft);border-radius:9px;font-size:.84rem;line-height:1.6}#learn-history-title a{padding:0;display:block}#learn-search-results{margin-block:18px}#learn-search-results section{padding:22px;background:var(--surface);border-radius:14px;border:1px solid var(--line);margin-bottom:12px}#learn-search-results h2{font-size:1.1rem;margin-bottom:16px}.learn-orientation{padding:18px 22px;border-left:3px solid var(--accent);background:var(--surface);border-radius:0 12px 12px 0;font-size:.9rem!important}
.guide-header h1{font-size:clamp(2.4rem,4vw,3.7rem)}.guide-header>p:not(.small){font-family:var(--sans);font-size:1.05rem;line-height:1.75;color:var(--ink-2)}.guide-emblem{display:none}.guide-header{margin-left:0;max-width:920px}.guide-masthead{padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:32px}.guide-layout{grid-template-columns:230px minmax(0,1fr);gap:44px}.desktop-contents{background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:12px;top:104px;max-height:calc(100dvh - 128px)}.desktop-contents a{font-family:var(--sans);font-size:.78rem;line-height:1.55;padding:9px 12px;border-radius:7px;color:var(--ink-2);text-decoration:none;border:0}.desktop-contents a[aria-current=location]{background:var(--accent-soft);color:var(--accent);font-weight:700}.desktop-contents a:hover{background:var(--paper)}.continuous-guide{min-width:0}.guide-copy{max-width:75ch;font-family:var(--serif);font-size:1.04rem;line-height:1.85}.guide-copy h2,.guide-copy h3,.guide-copy h4{font-family:var(--sans)}.guide-copy h2{font-size:1.9rem;margin-top:48px;margin-bottom:24px}.guide-copy h3{font-size:1.27rem;margin-top:34px;margin-bottom:16px}.guide-copy p{line-height:1.85}.guide-notes{font-family:var(--sans)}.mobile-contents{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--surface);margin-bottom:28px}.mobile-contents summary{font:600 .9rem var(--sans);cursor:pointer}.clinical-intervention,.room-reference{border-radius:14px;border:1px solid var(--line);background:var(--surface);padding-inline:22px;margin-block:16px}.clinical-intervention>summary{min-height:60px;font-family:var(--sans)}.case-presentation{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:26px}.src-card{background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:24px!important;margin-block:18px}.src-card h3,.src-card .resource-title{font-family:var(--sans);font-size:1.15rem;line-height:1.45}.src-card p{font: .9rem/1.8 var(--sans)}.source-save-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.source-save-actions button{min-height:40px;border-radius:8px}.lib-filters{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:16px;gap:16px;margin-block:24px}.lib-filters label{font:.8rem var(--sans)}.library>header p{font-family:var(--sans)}.lib-count{font:.85rem var(--sans);color:var(--ink-3)}
.practice-choices>a,.continue-list>li,.card-paper,.community-note,.account-form,.practice-form,.room-card,.brief{border-radius:18px;border-color:var(--line);background:var(--surface);box-shadow:0 3px 12px #163b4704}.practice-choices>a{padding:30px}.practice-choices h2{font-size:1.5rem}.practice-choices p{font-family:var(--sans);font-size:.96rem;line-height:1.8;color:var(--ink-2)}.case-card{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:24px}.case-card h2,.case-card h3{font-size:1.2rem}.case-card p{font-family:var(--sans);line-height:1.75;font-size:.92rem}.timer{font-family:var(--sans);letter-spacing:-.055em}.tabs,.workbook-tabs{gap:6px;border-bottom:1px solid var(--line)}.tabs button,.workbook-tabs button{border-radius:9px 9px 0 0;padding:12px 16px;font-size:.9rem}.comparison-teaser{border:1px solid var(--line);border-radius:20px;padding:30px;background:var(--surface)}.comparison-teaser h2{font-size:1.7rem}.comparison-teaser p{font-family:var(--sans);font-size:.96rem;line-height:1.75}
@media(min-width:1600px){.platform-hero{padding-block:90px}.platform-preview{padding:32px}.preview-body{min-height:420px}.preview-panel{padding:28px}}
@media(max-width:1180px){.inst-workspace-layout{grid-template-columns:190px minmax(0,1fr);gap:20px}.inst-grid{grid-template-columns:1fr}.inst-grid .inst-card{display:block}.platform-hero{gap:32px}.preview-sidebar{display:none}.preview-body{grid-template-columns:1fr}.platform-section{padding-block:52px}.platform-split{gap:30px}.guide-layout{grid-template-columns:200px minmax(0,1fr);gap:28px}}
@media(max-width:960px){.platform-hero{grid-template-columns:1fr;padding-top:32px}.platform-hero h1{max-width:18ch}.platform-hero .platform-lede{max-width:62ch}.platform-preview{max-width:720px}.preview-sidebar{display:grid}.preview-body{grid-template-columns:130px 1fr;min-height:340px}.platform-split{grid-template-columns:1fr}.platform-workflow{grid-template-columns:1fr}.platform-feature{padding:26px}.platform-feature .feature-icon{float:left;margin:0 20px 0 0}.platform-feature h3{padding-top:2px}.platform-feature p,.platform-feature a{margin-left:64px}.platform-section-head.wide{display:block}.platform-boundary{grid-template-columns:1fr}.platform-cta{padding:36px;display:block}.platform-cta h2{max-width:24ch}.platform-cta .platform-actions{margin-top:24px}.inst-workspace-layout{display:block}.inst-workspace-rail{position:relative;top:0;padding:7px;border-radius:12px;margin-bottom:18px;overflow:hidden}.inst-workspace-rail .rail-label,.inst-workspace-rail .rail-bottom{display:none}.inst-tabs{flex-direction:row;overflow-x:auto;scrollbar-width:thin;gap:3px;max-width:100%;overscroll-behavior-x:contain}.inst-tabs button{width:auto;white-space:nowrap;flex:0 0 auto;font-size:.81rem;padding:11px 14px;gap:8px}.inst-tabs button[aria-current=page]{box-shadow:inset 0 -2px var(--accent)}.inst-nav-icon{width:17px}.inst-nav-icon svg{width:17px;height:17px}.inst-two{grid-template-columns:1fr}.inst-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.inst-grid .inst-card{padding:19px}.inst-workspace-toolbar{padding:12px 16px}.inst-workspace-toolbar label{display:none}.inst-demo-note{gap:16px}.guide-layout{display:block}.desktop-contents{display:none}.guide-header{padding:0}.guide-copy{max-width:80ch}}
@media(max-width:760px){html{scroll-padding-top:82px}.wrap{padding-inline:20px}.page{padding-top:26px;padding-bottom:60px}.masthead-in{min-height:68px;gap:12px;padding-inline:20px}.brand{font-size:1.16rem}.brand .mark{width:29px;height:29px}.mainnav{display:none}.you-link{margin-left:auto;font-size:.83rem}.theme-toggle{min-height:38px;min-width:38px}.tabbar{display:none}.sitefoot{padding-bottom:40px}.platform-hero{padding-top:15px}.platform-hero h1{font-size:clamp(2.4rem,8.5vw,3.4rem);max-width:17ch}.platform-lede{font-size:1.02rem!important}.platform-preview{border-radius:20px;padding:17px}.platform-section{padding-block:40px}.platform-proof{align-items:start}.platform-proof>p{max-width:none;flex-basis:100%}.platform-proof>div{gap:15px;justify-content:space-between}.platform-proof strong{font-size:1.45rem}.platform-proof span{font-size:.7rem}.platform-section h2{font-size:1.9rem}.platform-bookcase{padding:20px}.platform-bookcase a{padding:16px;gap:12px}.platform-bookcase strong{font-size:.9rem}.platform-cta{padding:28px;border-radius:19px}.platform-cta h2{font-size:1.9rem}.platform-actions .btn{width:auto;font-size:.85rem}.platform-boundary>div{padding:24px}.preview-header{padding:12px 14px}.preview-sidebar{display:none}.preview-body{grid-template-columns:1fr;min-height:345px}.preview-panel{padding:20px}.platform-preview-tabs button{font-size:.7rem}.inst-brand{padding-block:10px 23px}.inst-brand h1{font-size:1.7rem}.inst-demo-note{align-items:start;padding:13px 15px}.inst-demo-note>div p{font-size:.75rem}.inst-demo-note button{font-size:.7rem;padding:7px 10px;min-height:36px}.inst-demo-note p strong{font-size:.82rem}.inst-grid{grid-template-columns:1fr}.inst-card{padding:20px}.inst-section-title h2{font-size:1.5rem}.inst-workspace-toolbar{align-items:start;gap:10px}.inst-workspace-toolbar .inst-row{display:block}.inst-workspace-toolbar select{max-width:100%;width:100%;font-size:.8rem}.inst-workspace-toolbar>a{font-size:.7rem}.inst-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.inst-metric{padding:17px}.inst-metric strong{font-size:1.65rem}.inst-metric span{font-size:.7rem}.inst-form fieldset{padding:15px}.inst-row{gap:8px}.inst-row .btn{font-size:.78rem;padding:10px 12px}.inst-accordion{padding:18px}.inst-dialog{padding:24px;width:calc(100% - 28px)}.inst-dialog h2{font-size:1.5rem}.guide-header h1{font-size:2.5rem}.guide-header .btn{white-space:normal;font-size:.82rem}.guide-copy{font-size:1rem}.guide-copy h2{font-size:1.65rem}.guide-families>section{padding:20px}.lib-filters{padding:18px}.src-card{padding:20px!important}.platform-feature p,.platform-feature a{margin-left:0}.platform-feature .feature-icon{float:none;margin:0 0 20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

@media(max-width:760px){.masthead-in{flex-wrap:wrap;gap:10px;padding-top:12px;padding-bottom:8px}.mainnav{display:flex;order:5;flex:1 0 100%;justify-content:space-between;gap:4px;margin:0;padding-top:2px}.mainnav a{flex:1;text-align:center;padding:8px 7px;font-size:.79rem;line-height:1.4}.you-link{margin-left:auto}.masthead{position:sticky}.page{padding-top:24px}html{scroll-padding-top:138px}.desktop-contents{display:none}}

.brand span{font-family:var(--sans);font-weight:750;letter-spacing:-.05em}.brand .mark{color:var(--ink);width:34px;height:34px}.inst-org-avatar .mark{width:30px;height:30px}.platform-bookcase b svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.preview-panel[role=tabpanel]:focus{outline:none}

.preview-avatar .mark{width:19px;height:19px}.platform-hero h1{max-width:16ch}
/* Rehearsal tiers describe learning demand, with role briefs available before setup. */
.case-tiers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:28px 0 16px}.case-tiers button{display:flex;flex-direction:column;gap:10px;padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:17px;text-align:left;min-width:0;transition:border-color .18s,background .18s,transform .18s}.case-tiers button:hover{border-color:var(--accent);transform:translateY(-2px)}.case-tiers button[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent)}.case-tier-label{font-size:.73rem;text-transform:uppercase;letter-spacing:.09em;font-weight:700;color:var(--accent)}.case-tiers strong{font-size:1.08rem;line-height:1.35}.case-tiers button>span:last-child{font-size:.86rem;color:var(--ink-2);line-height:1.6}.case-tier-note{margin:0 0 28px;max-width:90ch}.case-filters{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px;align-items:end}.case-filters>div{min-width:0}.case-filters select,.case-filters input{width:100%}.case-level{font:700 .72rem var(--sans);letter-spacing:.03em;background:var(--accent-soft);color:var(--accent);border-radius:6px;padding:5px 9px;display:inline-block}.case-level-advanced{background:var(--ink);color:var(--surface)}.case-focus{font-size:.86rem;color:var(--ink-2);margin-top:16px;line-height:1.6}.case-focus strong{font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;display:block;color:var(--ink);margin-bottom:5px}.rehearsal-background{margin:26px 0}.rehearsal-background h3{margin-bottom:12px}.rehearsal-opening{background:var(--accent-soft);border:1px solid var(--line);border-radius:14px;padding:24px;margin:26px 0}.rehearsal-opening .platform-kicker{margin-bottom:12px}.rehearsal-opening blockquote{margin:14px 0 18px;padding:0;border:0;font:500 1.2rem/1.7 var(--serif);color:var(--ink)}.rehearsal-opening p:last-child{font-size:.9rem;line-height:1.7}.platform-training-reading{margin:24px 0;font-size:.95rem;line-height:1.8}.case-brief .more,.brief .more{border-bottom:1px solid var(--line);padding:18px 0}.case-brief .more summary,.brief .more summary{cursor:pointer;font-weight:650;min-height:36px}.case-brief .more p,.brief .more p{margin:14px 0;line-height:1.8}
@media(max-width:760px){.case-tiers{grid-template-columns:1fr;gap:12px}.case-tiers button{padding:20px;gap:7px}.case-filters{grid-template-columns:1fr 1fr}.case-filters .f-search{grid-column:1/-1}.rehearsal-opening{padding:20px}}
@media(max-width:760px){.masthead-in>.you-link{display:inline-flex;margin-left:auto;gap:6px;font-size:.78rem;padding:0 2px}.masthead-in>.theme-toggle{margin-left:0;min-width:38px;width:38px;height:38px}.masthead-in>.brand{margin-right:auto}.inst-tabs{scroll-behavior:smooth;scroll-padding-inline:12px}}
.guide-family-flagship{grid-column:1/-1;border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:28px}.guide-family-flagship #learn-history-title{margin:16px 0 0;padding:17px 20px;border-radius:12px;background:var(--accent-soft);border:1px solid var(--line)}.guide-foundations{grid-column:1/-1}.guide-archive-note{border:1px solid var(--line);background:var(--accent-soft);padding:18px;border-radius:12px;margin:18px 0}
.learn-tabs{display:flex;flex-wrap:nowrap;gap:4px;overflow-x:auto;max-width:100%;padding-bottom:8px}.learn-tabs a{flex:0 0 auto;white-space:nowrap;padding:10px 14px}@media(max-width:760px){.learn-tabs a{font-size:.86rem;padding:10px 12px}}

/* Green identifies interactive controls; the page and brand keep their warm palette. */
:root{
 --control-action:#3d5a45;--control-hover:#2f4836;--control-pressed:#263d2d;--control-on-action:#f8f4ee;
 --control-text:#36543e;--control-border:#718575;--control-soft:#e3eade;--control-selected:#d8e3d3;--control-surface:var(--surface);
 --control-focus:#3d5a45;--control-danger:#9f3028;--control-danger-soft:#f5e1db;
 --action:var(--control-action);--action-hover:var(--control-hover);--on-action:var(--control-on-action);--focus:var(--control-focus)
}
:root[data-theme=dark]{
 --control-action:#a7c3a9;--control-hover:#bcd4bd;--control-pressed:#90b294;--control-on-action:#1e1a17;
 --control-text:#bed6bf;--control-border:#7c9d80;--control-soft:#2d3b2e;--control-selected:#374b39;
 --control-focus:#a7c3a9;--control-danger:#f0a29b;--control-danger-soft:#4a2c28;--focus:var(--control-focus)
}
@media(prefers-color-scheme:dark){:root:not([data-theme]){
 --control-action:#a7c3a9;--control-hover:#bcd4bd;--control-pressed:#90b294;--control-on-action:#1e1a17;
 --control-text:#bed6bf;--control-border:#7c9d80;--control-soft:#2d3b2e;--control-selected:#374b39;
 --control-focus:#a7c3a9;--control-danger:#f0a29b;--control-danger-soft:#4a2c28;--focus:var(--control-focus)
}}
.btn.primary:not(.danger):not(.inst-danger),.practice-choices .choice-action{
 background:var(--control-action);border-color:var(--control-action);color:var(--control-on-action);box-shadow:0 3px 8px color-mix(in srgb,var(--control-action) 16%,transparent)
}
.btn.primary:not(.danger):not(.inst-danger):hover:not(:disabled),.practice-choices>a:hover .choice-action{
 background:var(--control-hover);border-color:var(--control-hover);color:var(--control-on-action)
}
.btn.primary:not(.danger):not(.inst-danger):active:not(:disabled){background:var(--control-pressed);border-color:var(--control-pressed)}
.btn:not(.primary):not(.danger):not(.inst-danger),.save-btn,.theme-toggle,.close-btn,.library-help-close{
 color:var(--control-text);border-color:var(--control-border);background:var(--control-surface)
}
.btn:not(.primary):not(.danger):not(.inst-danger):hover:not(:disabled),.save-btn:hover,.theme-toggle:hover,.close-btn:hover,.library-help-close:hover{
 color:var(--control-text);background:var(--control-soft);border-color:var(--control-action)
}
.text-btn:not(.danger):not(.inst-danger){color:var(--control-text);text-decoration-color:var(--control-border)}
.text-btn:not(.danger):not(.inst-danger):hover{color:var(--control-hover);text-decoration-color:currentColor}
button:is([aria-pressed=true],[aria-selected=true],[aria-current=page]):not(.danger):not(.inst-danger),.save-btn[aria-pressed=true],.case-tiers button[aria-pressed=true]{
 color:var(--control-text);background:var(--control-selected);border-color:var(--control-action)
}
.case-tiers button:hover,.case-tiers button[aria-pressed=true]{border-color:var(--control-action)}
.case-tiers button[aria-pressed=true]{box-shadow:inset 0 0 0 1px var(--control-action)}
.inst-tabs button:hover{color:var(--control-text);background:var(--control-soft)}
.inst-tabs button[aria-current=page]{color:var(--control-text);background:var(--control-selected);box-shadow:inset 3px 0 var(--control-action)}
.seg input:checked+span{background:var(--control-action);color:var(--control-on-action);border-color:var(--control-action)}
.tabs [role=tab][aria-selected=true],.workbook-tabs button[aria-selected=true],.learn-tabs button[aria-pressed=true]{color:var(--control-text);box-shadow:inset 0 -3px var(--control-action)}
.my-library-folders [aria-pressed=true]{color:var(--control-text);border-bottom-color:var(--control-action)}
.mainnav a[aria-current=page],.mainnav a:hover{color:var(--control-text);background:var(--control-soft)}
.learn-tabs a[aria-current],.subnav a[aria-current],.tabbar a[aria-current]{color:var(--control-text);border-color:var(--control-action);text-decoration-color:var(--control-action)}
.pdh-bookmark button,.pdh-continue>button{color:var(--control-text);background:var(--control-surface);border-color:var(--control-border)}
.pdh-bookmark button:hover,.pdh-continue>button:hover{color:var(--control-text);background:var(--control-soft);border-color:var(--control-action)}
:root input:is([type=checkbox],[type=radio],[type=range]){accent-color:var(--control-action)}
:root :is(button,a.btn,input,select,textarea,[role=button]):focus-visible{outline:3px solid var(--control-focus);outline-offset:3px}
/* Actions on charcoal panels use the same green family with a lighter value. */
.platform-cta,.platform-preview-tabs{
 --control-action:#a7c3a9;--control-hover:#bcd4bd;--control-pressed:#90b294;--control-on-action:#1e1a17;
 --control-text:#c2dac2;--control-border:#8ca68f;--control-soft:#324633;--control-selected:#3e5440;--control-surface:#352d26;--control-focus:#a7c3a9
}
.platform-preview-tabs button{color:var(--control-text);border-color:var(--control-border)}
.platform-preview-tabs button:hover{background:var(--control-soft);border-color:var(--control-action)}
.platform-preview-tabs button[aria-selected=true]{color:var(--control-on-action);background:var(--control-action);border-color:var(--control-action)}
.platform-cta .platform-actions a:not(.btn){color:var(--control-text)}
/* Destructive actions retain their distinct meaning and never inherit a green fill. */
.btn.inst-danger,.btn.danger,.text-btn.inst-danger,.text-btn.danger{
 color:var(--control-danger);background:var(--control-surface);border-color:var(--control-danger);text-decoration-color:currentColor;box-shadow:none
}
.btn.inst-danger:hover,.btn.danger:hover,.text-btn.inst-danger:hover,.text-btn.danger:hover{color:var(--control-danger);background:var(--control-danger-soft);border-color:var(--control-danger)}
.btn.primary:disabled{transform:none;box-shadow:none}
@media(max-width:960px){.inst-tabs button[aria-current=page]{box-shadow:inset 0 -2px var(--control-action)}}
@media(forced-colors:active){.btn,.save-btn,.case-tiers button[aria-pressed=true],.inst-tabs button[aria-current=page]{border-color:ButtonText}.seg input:checked+span,.tabs [role=tab][aria-selected=true],button[aria-pressed=true]{outline:2px solid Highlight}}

/* Links and disclosures share the green interaction cue. */
:root a:not(.brand):not(.btn):not(.danger):not(.inst-danger){color:var(--control-text);text-decoration-color:currentColor}
:root a:not(.brand):not(.btn):not(.danger):not(.inst-danger):hover{color:var(--control-hover);text-decoration-color:currentColor}
:root a:not(.brand):not(.btn):not(.danger):not(.inst-danger) :is(h1,h2,h3,h4,h5,h6,strong){color:inherit}
:root button:not(.btn):not(.danger):not(.inst-danger){color:var(--control-text)}
:root button:not(.btn):not(.danger):not(.inst-danger) :is(strong,.case-tier-label){color:inherit}
:root summary,:root details[open]>summary{color:var(--control-text)}
:root summary:hover{color:var(--control-hover)}
:root summary :is(h1,h2,h3,h4,h5,h6,strong,span){color:inherit}
:root summary::marker,:root summary::before,:root summary::after{color:var(--control-text)}
details.more>summary::before,details.more>summary:hover::before,.entry>summary::after,.source-review>summary::before{border-left-color:var(--control-action)}
:root a[aria-current]:not(.brand){border-color:var(--control-action);text-decoration-color:var(--control-action)}
.desktop-contents a[aria-current],.pdh-route-choice[aria-current],.pdh-full-route[aria-current],.pdh-nav-steps>a[rel=next]{background:var(--control-soft);border-color:var(--control-action)}
.tabbar a[aria-current]::before{background:var(--control-action)}
:root :is(a,summary):focus-visible{outline:3px solid var(--control-focus);outline-offset:3px}

/* Compact vertical rhythm. Reading type, horizontal spacing and tap targets are unchanged. */
.page{padding-block:19px 40px}.pagehead{margin-bottom:18px}.pagehead h1{margin-bottom:9px}.pagehead p+p{margin-top:9px}
.platform-hero{padding-block:31px 26px}.platform-hero h1{margin-bottom:12px}.platform-actions{margin-top:14px}.platform-caption{margin-top:9px}
.platform-section{padding-block:36px}.platform-section-head{margin-bottom:16px}.platform-section-head h2{margin-bottom:8px}.platform-split{row-gap:30px}.platform-split h2{margin-bottom:10px}.platform-workflow{row-gap:10px}.platform-boundary{row-gap:12px}
.platform-list{row-gap:8px;margin-top:12px}.platform-feature h3{margin-bottom:6px}.platform-feature a{margin-top:12px}.platform-cta{margin-block:18px 12px;padding-block:27px}.platform-cta h2{margin-bottom:8px}
.platform-faq details{padding-block:12px}.platform-faq details p{margin-top:7px}.platform-training-reading{margin-block:12px}.sitefoot{margin-top:clamp(28px,4vw,48px);padding-block:18px 25px}.sitefoot details{margin-block:8px}.sitefoot .foot-links{margin-top:10px}
/* The guide heading and its first section should read as one continuous page. */
.guide-header{margin-bottom:12px}.guide-header h1{margin-block:6px}.guide-header>p+p{margin-top:.5em}.guide-header>p:last-child{margin-top:10px}.guide-masthead{padding-bottom:14px;margin-bottom:16px}
.mobile-contents{padding-block:8px;margin-bottom:14px}.guide-copy h2{margin-top:24px;margin-bottom:12px}.guide-copy>h2{padding-top:12px}.guide-copy h3{margin-top:17px;margin-bottom:8px}
.guide-copy p{margin-bottom:.575em}.guide-copy p+p{margin-top:0}.guide-copy ul,.guide-copy ol{margin-block:7px 12px}.guide-copy li+li{margin-top:5px}.guide-copy blockquote{margin-block:9px 12px}
.guide-row{row-gap:16px}.guide-notes{margin-block:4px 10px;row-gap:6px}.guide-note{margin-bottom:9px;padding-block:5px}.guide-notes .guide-note.note-open{margin-block:2px 9px;padding-block:5px}.guide-note.source-note{padding-block:0}
.guide-example{margin-block:9px 15px;padding-block:8px}.guide-example figcaption{margin-bottom:6px}.guide-more[open]{padding-bottom:6px}.clinical-intervention,.room-reference{margin-block:8px}.room-skill,.partner-drill{padding-block:10px}
.clinical-walkthrough h4{margin-block:18px 8px}.contextual-drill h4,.case-outline h4{margin-block:14px 6px}.case-reminder h5,.contextual-drill h5{margin-block:10px 5px}.guide-copy.clinical-purpose>h3{margin-block:6px}
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/* Resource categories and entries use the same compact heading rhythm. */
.guide-reading-item{padding-block:12px}.guide-reading-item .resource-meta{margin-bottom:4px}.guide-copy .resource-title,.resource-title{margin-block:4px 5px}.resource-byline,.guide-copy .resource-byline{margin-bottom:8px}.resource-description,.guide-copy .resource-description{margin-bottom:9px}
.guide-sources li{padding-block:14px}.guide-sources li>p{margin-block:6px}.source-save-actions{margin-top:8px}.src-card{padding-block:12px!important;margin-block:9px}.format-heading h3{padding-block:12px 4px}.lib-filters{margin-block:12px}
.learn-home>h1{margin-bottom:10px}.learn-home>p{margin-bottom:9px}.guide-families{row-gap:14px}.guide-families>section{margin-bottom:18px}.guide-families h2{margin-bottom:9px;padding-bottom:8px}#learn-search-results{margin-block:9px}#learn-search-results h2{margin-bottom:8px}
.learn-home .learn-tabs,.library .learn-tabs,.glossary .learn-tabs,.guide-comparisons .learn-tabs,.pagehead+.learn-tabs{margin-block:11px 14px}.learn-teaching-introduction,.learn-representation,.learn-shared-lessons{margin-block:1rem}.learn-teaching-links{margin-block:.65rem}.shared-lesson>section,.shared-lesson-next{margin-top:1rem}
.shared-skill,.guide-comparisons{margin-block:16px}.shared-skill>h2,.guide-comparisons>section>h2{margin-block:19px 8px}.guide-comparisons section{padding-block:12px}.guide-comparisons dt{margin-top:12px}
/* Every history chapter follows the same rhythm, including its sources and reading controls. */
.pdh-reading{margin-block:1.25rem 2.5rem}.pdh-reading h1{margin-block:.25rem .75rem}.pdh-reading>h2{margin-block:1.4rem .5rem}.pdh-reading>h3{margin-block:1.1rem .4rem}.pdh-reading>h4,.pdh-reading>h5,.pdh-reading>h6{margin-block:.9rem .325rem}.pdh-reading>p{margin-bottom:.625rem}
.pdh-reading .pdh-breadcrumb{margin-bottom:1rem}.pdh-reading details{margin-block:.75rem}.pdh-reading details[open]>summary{margin-bottom:.5rem}.pdh-reading .pdh-source{margin-block:1rem}.pdh-chapter-nav{margin-block:.75rem}.pdh-reading-actions{margin-block:1.5rem;padding-block:.75rem}.pdh-reading-actions>h2{margin-bottom:.6rem}.pdh-primary-actions{margin-top:.75rem}
.pdh-hub>h2{margin-top:1.5rem}.pdh-route-grid{margin-block:.5rem 1.5rem;row-gap:.5rem}.pdh-route-results>h2{margin-block:1rem .5rem}#pdh-chapters>[data-pdh-part]{margin-block:1rem .375rem}
/* Workspace spacing changes sit outside fields, buttons and card padding. */
.inst-brand{padding-block:11px 14px}.inst-demo-note{margin-bottom:10px}.inst-workspace-toolbar{margin-bottom:11px}.inst-section-title{margin-bottom:8px}.inst-section-title:not(:first-child){margin-top:16px}.institutional [data-inst-content]>p{margin-bottom:11px}
.inst-two{margin-bottom:13px;row-gap:10px}.inst-grid{row-gap:9px}.inst-stack{row-gap:8px}.inst-metrics{row-gap:7px}.inst-ratings{row-gap:10px}.inst-privacy-footer{margin-top:16px;padding-top:10px}.inst-reading,.inst-thread{padding-block:12px}.inst-thread .inst-form{margin-top:12px}.inst-scenario{padding-top:9px}.inst-scenario details{margin-top:10px}
.inst-session-note{margin-bottom:12px}.inst-preview{margin-block:10px}.inst-scenario blockquote{margin-block:11px}.inst-accordion[open] summary{margin-bottom:11px}.inst-accordion details{margin-block:9px}.inst-accordion p+p{margin-top:8px}.inst-card p+p{margin-top:7px}.inst-dialog h2{margin-bottom:9px}
.cohort-workspace{margin-block:1rem}.cohort-workspace form,.cohort-step,.cohort-post{margin-block:.6rem}.cohort-workspace h3{margin-top:.75rem}.cohort-workspace details{margin-block:.5rem}
.account-card{margin-bottom:14px}.account-card fieldset{margin-block:14px}.profile-panel h3{margin-top:10px;margin-bottom:3px}.profile-panel .notice{margin-top:11px}.page-profile .journal{margin-top:20px}.profile-photo-editor,.my-library-folder-form,.my-library-folders{margin-block:.75rem}.member-row{padding-block:10px}.message-thread form{margin-top:.75rem}
.practice-choices{margin-block:18px;row-gap:18px}.case-tier-note{margin-bottom:14px}.rehearsal-background,.rehearsal-opening{margin-block:13px}.rehearsal-background h3{margin-bottom:6px}.case-brief .more,.brief .more{padding-block:9px}.case-brief .more p,.brief .more p{margin-block:7px}
@media(min-width:1600px){.platform-hero{padding-block:45px}}
@media(max-width:1180px){.platform-section{padding-block:26px}.platform-split{row-gap:15px}}
@media(max-width:960px){.platform-hero{padding-top:16px}.platform-cta{padding-block:18px}.platform-cta .platform-actions{margin-top:12px}.inst-workspace-rail{margin-bottom:9px}}
@media(max-width:760px){.page{padding-block:12px 30px}.guide-notes{margin-block:2px 5px}.pdh-reading{margin-top:.75rem}.pdh-reading>h2{margin-top:1.2rem}.pdh-reading .pdh-breadcrumb{margin-bottom:.75rem}}
@media(max-width:680px){.platform-hero{padding-top:8px}.platform-section{padding-block:20px}.platform-cta{padding-block:14px}.inst-brand{padding-block:5px 12px}.src-card{padding-block:10px!important}.sitefoot{padding-bottom:20px}}

/* Catalog groups follow an explicit reading order instead of balanced newspaper columns. */
.guide-families{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));columns:auto;gap:18px 24px;align-items:start}
.guide-families>section{margin:0;padding-block:18px}
.guide-families .guide-family-flagship,.guide-families .guide-foundations{grid-column:1/-1}
.guide-families h2{margin-block:0 10px;padding-bottom:0}
.guide-families li>a{padding-block:10px}
.guide-families .guide-family>p,.guide-families .guide-foundations>p{margin-block:0 6px}
.guide-family-flagship li{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:center}
.guide-family-flagship #learn-history-title{margin:0;padding-block:12px}
/* Adjacent search actions need a real gap even when the row wraps. */
.library-search-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-block:10px 14px}
.library-search-tools #lib-count{flex:1 0 100%;margin:0}
.library-search-tools .btn{margin:0}
@media(max-width:760px){.guide-families{grid-template-columns:minmax(0,1fr)}.guide-family-flagship li{grid-template-columns:minmax(0,1fr);gap:8px}}

/* Match the depth component selectors so compact headings keep one rhythm. */
.depth-intervention .clinical-walkthrough>h4,.depth-scene>h4{margin-block:18px 8px}