/* Composition and interaction details for the integrated learning studio. */
:root{--bg:#f5f7f8;--panel:#fff;--soft:#eaf0f2;--text:#16262d;--muted:#596b73;--line:#d5e0e4;--accent:#086e80;--cyan:#8ae5f4;--action:#153b46;--action-text:#fff;--round:14px}
:root[data-theme=dark]{--bg:#0a1117;--panel:#111e27;--soft:#172a34;--text:#e6f1f4;--muted:#a0b7c2;--line:#263d4a;--accent:#8ce9f8;--cyan:#8ce9f8;--action:#8ce9f8;--action-text:#102932}
::selection{background:var(--action);color:var(--action-text)}
html{scrollbar-color:var(--muted) var(--bg)}
input,textarea{caret-color:var(--accent)}
h1,h2,h3,h4{letter-spacing:-.035em}
.main-nav{gap:22px}.desktop-nav{gap:25px}
.studio-home .section{margin-top:82px}
.studio-hero{align-items:stretch;gap:7%;padding-top:46px;padding-bottom:54px}
.hero-feature{align-self:center}
.hero-feature h1{font-size:clamp(48px,5.65vw,82px);max-width:14ch;font-weight:570;line-height:1.05}
.hero-story{aspect-ratio:1/1.04;border-radius:8px}
.hero-story:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,#07121be8);pointer-events:none}
.hero-story .author-credit{z-index:1;display:block;inset:auto 26px 24px;padding:0;background:none;color:#fff}
.author-credit>span{display:block;font-size:12px;letter-spacing:.01em}
.author-credit h2{font-size:clamp(27px,3.5vw,46px);margin:14px 0 22px;line-height:1.08;color:#fff}
.author-credit>span:last-child{display:flex;align-items:center;min-height:44px}
.studio-edition{grid-template-columns:.8fr 1.35fr .85fr;gap:35px;align-items:start}
.studio-edition>.edition-lab{position:relative;background:#132832;padding:26px;color:#edf8fa;--soft:#183541;--accent:#8ce9f8;--muted:#b9d1da;--text:#edf8fa}
.edition-meta{display:block;font-size:11px;margin-bottom:15px;color:#b9d1da}
.edition-lab h3{font-size:26px;line-height:1.2}
.edition-lab .formula-figure{padding:0;background:none;border:0;margin:0}
.edition-lab .formula-figure figcaption{display:none}
.edition-lab .text-link{color:#a7eff9;margin-top:0}
.edition-next>a{display:grid;grid-template-columns:1fr 20px;gap:4px 14px;padding:20px 0}
.edition-next>a>b{font-weight:500}.edition-next>a>span{font-size:12px;color:var(--muted);grid-column:1}.edition-next>a>svg{grid-column:2;grid-row:1/3}
.formula-figure svg{fill:currentColor}.formula-figure:not(.chapter-figure) svg text{text-anchor:middle;font-size:16px;fill:currentColor}
.formula-figure .figure-axis{stroke:var(--muted);fill:none;stroke-width:1}
.formula-figure:not(.chapter-figure) .figure-muted{opacity:.12}
.chapter-figure svg text{fill:currentColor;opacity:1}.chapter-figure .figure-axis{stroke:currentColor}
.shelf-card>.formula-figure{width:100%;margin:0 0 20px;padding:24px 24px 16px}
.shelf-card>.formula-figure svg{height:175px}
.shelf-card>.formula-figure figcaption{margin-top:8px;font-size:11px}
.course-library{grid-template-columns:repeat(2,minmax(0,1fr));gap:45px}
.course-library .shelf-card>.formula-figure svg{height:210px}
.studio-reference{display:grid;grid-template-columns:1fr 1fr;gap:12%;padding:46px 0;border-block:1px solid var(--line)}
.studio-reference h2{font-size:clamp(32px,3.8vw,50px)}
.studio-reference p{max-width:45ch;font-size:16px;color:var(--muted);margin:20px 0 25px}
.reference-terms{align-self:center}
.reference-terms>a{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:17px 0;min-height:70px}
.reference-terms b{font-size:25px;font-weight:550}.reference-terms small{display:block;font-size:12px;color:var(--muted);margin-top:3px}
.reference-terms a:hover{color:var(--accent)}
.studio-map>a:has(.map-symbol){grid-template-columns:34px 1fr 20px}
.studio-map>a:has(.map-symbol)>svg{grid-column:3;grid-row:1}
.map-symbol{align-self:start;color:var(--accent);padding-top:3px}.map-symbol svg{width:27px;height:27px}
.studio-map p{margin-top:8px}
.studio-bottom{padding:60px 0 30px;margin-top:80px;border-top:1px solid var(--line)}
.studio-bottom p{margin:20px 0;color:var(--muted);font-size:17px}
.section-head>div>p{color:var(--muted);margin-top:12px}
.wiki-search{display:block}.wiki-search input{width:100%;padding-right:160px}
.wiki-search>svg{left:18px;right:auto;top:19px}.wiki-search:has(>svg) input{padding-left:50px;padding-right:130px}
.wiki-search kbd{position:absolute;right:18px;top:19px;font:12px Onest;color:var(--muted)}
.wiki-index a{justify-content:flex-start}.wiki-index svg{width:18px;height:18px}
.wiki-count{font-size:12px;color:var(--muted);margin-bottom:15px}
.reading-meta{font-size:12px;color:var(--muted);margin:0 0 15px}
.reading-nav>button{display:block;text-align:left;border:0;background:transparent;font-size:13px;line-height:1.5;color:var(--muted);padding:10px 0}
.reading-nav>button:hover{color:var(--accent)}
.reading-nav>button.bookmark-button{margin-top:20px}
.reading-nav>b{font-size:13px;margin-bottom:14px}
.reading-layout section{scroll-margin-top:110px}
.reading-example h2{font-size:25px;margin-bottom:15px;line-height:1.25}
.reading-example small{display:block;color:var(--muted);margin-top:18px;font-size:12px}
.term-formula{font-size:17px;font-weight:550;line-height:1.6;margin-top:20px;border-top:1px solid var(--line);padding-top:18px}
.reading-source{border-top:1px solid var(--line);padding-top:24px;font-size:13px;line-height:1.7}
.reading-source a{color:var(--accent)}.reading-source small{color:var(--muted);display:block;margin-top:8px}
.reading-related h2:not(:first-child){margin-top:26px}
.course-cover{align-items:center;gap:8%}.course-feature h1{font-size:clamp(40px,4.5vw,62px);line-height:1.08}
.course-cover>.formula-figure{margin:0}.course-overview{display:grid;grid-template-columns:1fr 250px;gap:10%;margin:50px 0}
.course-overview .reading-related{position:static}
.course-outline>b{display:block;font-size:17px;line-height:1.35;margin-bottom:20px}
.course-outline>summary{min-height:44px;font-size:13px;font-weight:550;margin-bottom:10px;color:var(--accent)}
.course-outline nav>b{display:block;font-size:17px;line-height:1.4;margin:5px 0 18px}
.course-track-progress{margin-top:30px}.course-track-progress small{font-size:11px;color:var(--muted)}
.chapter-terms{margin-top:40px;border-top:1px solid var(--line);padding-top:25px}
.chapter-terms h2{font-size:22px;margin-bottom:14px}.chapter-terms a{display:inline-flex;align-items:center;min-height:44px;color:var(--accent);margin-right:24px}
.chapter-sources{margin-top:24px}.chapter-sources summary{min-height:44px;font-size:13px;color:var(--muted)}.chapter-sources a{display:block;color:var(--accent);padding:8px 0;font-size:13px}
.quiz-option::before{display:none}.quiz-option>span{display:grid;place-items:center;border:1px solid var(--line);border-radius:5px;width:26px;height:26px;flex:0 0 26px;font-size:12px}
.quiz-option>svg{margin-left:auto;width:19px;height:19px}
.order-controls label{display:grid}.order-controls label[hidden]{display:none}
.order-controls input,.order-controls select{width:100%;min-width:0;padding:12px;border:1px solid var(--line);border-radius:8px}
.order-book .section-head{flex-wrap:wrap;gap:12px;margin-bottom:24px}
.order-book caption{text-align:left;font-size:12px;color:var(--muted);margin-bottom:12px}
.order-book td:nth-child(2):before,.order-book td.book-fill:before{content:"";position:absolute;inset:5px 0 5px auto;width:var(--depth);background:color-mix(in srgb,var(--accent) 12%,transparent);z-index:-1}
.order-book td.book-fill:before{width:var(--filled);background:color-mix(in srgb,var(--accent) 24%,transparent)}
.book-spread{display:flex;gap:18px;justify-content:space-between;border-block:1px solid var(--line);padding:20px 0;margin:20px 0;font-size:11px;color:var(--muted)}
.book-spread b{display:block;font-size:18px;color:var(--text);font-weight:550;margin-top:4px}
.lab-reading{border-top:1px solid var(--line);padding-top:24px;margin-top:24px}.lab-reading h3{font-size:21px}.lab-reading p{font-size:14px;line-height:1.7;margin:14px 0;color:var(--muted)}
.order-result output{margin-top:20px}.order-result output small{display:block;font-size:12px;color:var(--muted);font-weight:400;letter-spacing:0;margin-bottom:8px}
.order-result dl{display:block}.order-result dl>div{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line);padding:9px 0}
.execution-status{font-size:13px;display:flex;gap:8px;align-items:center;color:var(--accent)}.execution-status svg{height:18px;width:18px}
.hub-deep-courses{margin-bottom:38px}.hub-deep-courses .studio-shelf{grid-template-columns:repeat(2,minmax(0,1fr))}.hub-deep-courses .shelf-card>.formula-figure{padding:14px}.hub-deep-courses .shelf-card h3{font-size:23px}
.learner-stats{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line);margin:15px 0 45px}
.learner-stats>*{padding:27px;border-right:1px solid var(--line)}.learner-stats>:first-child{padding-left:0}.learner-stats>:last-child{border:0}
.learner-stats strong{display:block;font-size:49px;letter-spacing:-.035em;line-height:1.3;font-weight:550}.learner-stats small{font-size:20px;color:var(--muted);font-weight:400}.learner-stats span{font-size:13px;color:var(--muted)}
.learner-stats a:hover{color:var(--accent)}
.learner-courses{display:grid;grid-template-columns:1fr 1fr;gap:35px 70px}.learner-courses article{padding:0 0 25px;border-bottom:1px solid var(--line)}.learner-courses p{color:var(--muted);font-size:14px;margin:14px 0}.learner-courses progress{display:block;width:100%;height:5px;margin:25px 0 15px;accent-color:var(--accent)}.learner-courses .meta{font-size:12px;align-items:center}.learner-courses .text-link{min-height:44px;display:inline-flex;align-items:center}
.storage-note{margin-top:40px;color:var(--muted);font-size:12px}
@media(prefers-reduced-motion:no-preference){
 .hero-story img{transition:transform .55s cubic-bezier(.16,1,.3,1)}.hero-story:hover img{transform:scale(1.025)}
 .shelf-card .formula-figure{transition:background .2s}.shelf-card:hover .formula-figure{background:color-mix(in srgb,var(--cyan) 18%,var(--soft))}
 .order-book td.book-fill:before{transform-origin:right;animation:fill-order .5s cubic-bezier(.16,1,.3,1)}
 @keyframes fill-order{from{transform:scaleX(0)}to{transform:scaleX(1)}}
 .reference-terms svg,.studio-map>a>svg{transition:transform .2s}.reference-terms a:hover svg,.studio-map>a:hover>svg{transform:translateX(4px)}
}
@media(max-width:1100px){.desktop-nav{gap:16px;font-size:12px}.main-nav{gap:16px}.studio-edition{grid-template-columns:1fr 1.3fr}.studio-edition>.edition-next{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);border-left:0;border-top:1px solid var(--line);padding:25px 0 0;gap:25px}.edition-next h3{grid-column:1/-1;margin:0}.course-overview{gap:5%}}
@media(max-width:760px){
 .studio-hero{grid-template-columns:1fr;gap:30px;padding-top:30px}.hero-feature h1{font-size:clamp(44px,8vw,64px)}
 .hero-story{aspect-ratio:1.5;max-height:380px}.hero-story>img{object-position:center 38%}.author-credit h2{font-size:32px;margin:10px 0}.hero-story .author-credit{inset:auto 22px 15px}
 .studio-edition{grid-template-columns:1fr}.studio-edition>.edition-next{display:block;padding:0;border:0}
 .edition-next>h3{margin-bottom:10px}.studio-edition>div:first-child h2{max-width:100%}
 .studio-home .section{margin-top:55px}.studio-reference{grid-template-columns:1fr;gap:20px;padding:32px 0}
 .studio-shelf,.course-library{grid-template-columns:1fr}.shelf-card{display:grid;grid-template-columns:1fr}.shelf-card>.formula-figure{grid-column:1/-1;grid-row:auto}.shelf-card>h3,.shelf-card>p,.shelf-card>.meta{grid-column:1/-1}.shelf-card>.formula-figure svg{height:170px}.course-library .shelf-card>.formula-figure svg{height:170px}
 .studio-map{grid-template-columns:1fr}.studio-map h3{font-size:23px}.studio-bottom{margin-top:50px}
 .reading-nav{display:flex;flex-wrap:wrap;gap:4px 18px}.reading-nav>b{width:100%;margin-bottom:0}.reading-nav>button{min-height:40px}.reading-nav>.bookmark-button{margin:0}
 .course-overview{grid-template-columns:1fr;gap:35px}.course-overview .reading-related{grid-column:1}
 .course-cover{grid-template-columns:1fr}.course-cover>.formula-figure{margin-top:18px}
 .wiki-intro h1{font-size:42px}.wiki-intro p{margin-top:0}.chapter-head h1{font-size:36px}
 .course-outline>summary{margin-bottom:0}.course-outline:not([open]){padding-bottom:5px}.course-outline>nav{margin-top:15px}.course-shell{gap:22px}.course-outline nav>b{display:none}
 .order-book .section-head{display:block}.order-book .pill{margin-top:12px;display:inline-flex}.order-result{padding:22px}
 .hub-deep-courses .studio-shelf,.learner-courses{grid-template-columns:1fr}.learner-stats{grid-template-columns:1fr 1fr}.learner-stats>*{padding:20px 16px}.learner-stats>:first-child{padding-left:16px}.learner-stats>:nth-child(2){border-right:0}.learner-stats>:nth-child(-n+2){border-bottom:1px solid var(--line)}.learner-stats strong{font-size:40px}
}
@media(max-width:380px){.hero-feature h1{font-size:40px}.hero-story{aspect-ratio:1.2}.author-credit h2{font-size:29px}.wiki-search kbd{display:none}.wiki-search:has(>svg) input{padding-right:15px;font-size:13px}.wiki-intro h1{font-size:36px}.book-spread{gap:8px}.book-spread b{font-size:15px}.order-book th{white-space:normal}.studio-edition>.edition-lab{padding:22px}.chapter-quiz{padding:18px}.reading-example{padding:20px}}

.page-title h1{overflow-wrap:anywhere}
.order-result:focus{outline:2px solid var(--accent);outline-offset:4px}