*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 system-ui,-apple-system,Segoe UI,sans-serif}body{--bg:#f5f6f4;--panel:#fff;--fg:#1c2824;--muted:#63716c;--accent:#136d5a;--line:#dce3dd}body.dark{--bg:#101a18;--panel:#1b2825;--fg:#edf4ef;--muted:#acbeb5;--accent:#75dfbd;--line:#35443f}a{color:var(--accent)}header{position:sticky;top:0;background:var(--panel);border-bottom:1px solid var(--line);padding:12px 24px;z-index:2;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}header a{text-decoration:none;font-weight:700}button,input,textarea{font:inherit}button,.btn{border:1px solid var(--line);border-radius:10px;padding:9px 15px;background:var(--panel);color:var(--fg);cursor:pointer}.btn.primary{background:var(--accent);color:var(--bg);border:0}button:hover,.btn:hover{outline:2px solid var(--accent)}.layout{display:grid;grid-template-columns:255px minmax(0,1fr);max-width:1440px;margin:auto}aside{border-right:1px solid var(--line);padding:24px;max-height:calc(100vh - 66px);overflow:auto;position:sticky;top:66px}aside a{display:block;padding:6px 0;text-decoration:none;color:var(--muted);font-size:14px}aside a:hover,aside a.active{color:var(--accent)}main{padding:36px clamp(20px,5vw,85px);max-width:1060px;width:100%}.eyebrow{letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:800;color:var(--accent)}h1{font-size:clamp(30px,4vw,55px);line-height:1.15;margin:12px 0 18px}h2{margin-top:38px;font-size:25px;line-height:1.3}h3{margin-top:25px}.lead{font-size:20px;color:var(--muted);max-width:760px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:26px 0}.card,.lesson,.callout{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:20px}.card h2{margin:8px 0}.lesson{margin:12px 0}.lesson a{font-weight:750;text-decoration:none}.muted,small{color:var(--muted)}.callout{border-left:4px solid var(--accent);margin:25px 0}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0}textarea{display:block;width:100%;min-height:115px;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--fg)}input[type=search],input[type=number]{padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--fg);max-width:100%}label{display:block;margin:10px 0}.bar{height:9px;background:var(--line);border-radius:9px;overflow:hidden}.bar span{display:block;height:100%;background:var(--accent)}footer{padding:30px 0;color:var(--muted);font-size:13px;border-top:1px solid var(--line);margin-top:60px}table{border-collapse:collapse;width:100%;margin:20px 0}td,th{padding:10px;text-align:left;border-bottom:1px solid var(--line)}details{padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:10px;margin:12px 0}summary{cursor:pointer;font-weight:700}@media(max-width:850px){.layout{display:block}aside{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--line)}aside .chapter-link{display:none}main{padding:24px}header{position:static}}@media print{header,aside,.actions{display:none}.layout{display:block}main{max-width:none;padding:0}body{background:white;color:black}}
/* Version 2: glossary, site-wide full text and accessible shared controls. */
[hidden]{display:none!important}
html{scroll-padding-top:calc(var(--header-height,80px) + 24px)}
body{--highlight:#ffe8a1;--highlight-fg:#352704;--soft:#e9f2ed}
body.dark{--highlight:#68551c;--highlight-fg:#fff2bd;--soft:#223c32;color-scheme:dark}
body:not(.dark){color-scheme:light}
:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-80px;left:20px;z-index:20;padding:10px 16px;background:var(--panel);border:2px solid var(--accent);border-radius:8px}
.skip-link:focus{top:10px}
.site-header{display:grid;grid-template-columns:minmax(220px,1fr) minmax(200px,390px) auto auto;gap:18px;padding:12px 24px}
.site-header>span{font-size:13px;white-space:nowrap;color:var(--muted)}
.site-header>button{font-size:13px;white-space:nowrap}
.header-search{display:flex;gap:6px;min-width:0;align-items:center}
.header-search input{min-width:0;width:100%;font-size:14px}
.header-search button{font-size:13px;padding:10px 12px}
aside{top:var(--header-height,80px);max-height:calc(100vh - var(--header-height,80px));align-self:start}
aside a.nav-utility{font-weight:700;color:var(--accent);font-size:14px}
aside a[aria-current=page]{background:var(--soft);border-radius:6px;margin-left:-8px;padding-left:8px;color:var(--accent)}
.discovery-panel{padding:24px;border:1px solid var(--line);border-radius:15px;margin:32px 0;background:var(--soft)}
.discovery-panel h2{margin:8px 0 12px}.discovery-panel p{margin:0}.discovery-panel .actions{margin:20px 0 0}
.chapter-terms{font-size:14px;border-left:3px solid var(--accent);padding:8px 12px;background:var(--soft);border-radius:0 8px 8px 0}
.term-link{font-weight:650;text-decoration:none;border-bottom:1px dotted currentColor}
.term-link abbr{cursor:help;text-decoration:none}
.search-panel{padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:16px;margin:28px 0}
.search-panel>label{margin-top:0;font-weight:650}
.search-panel input[type=search]{width:100%;min-width:0}
.search-input-row{display:flex;gap:10px;align-items:stretch}
.primary-button{background:var(--accent);color:var(--bg);border-color:var(--accent);font-weight:650}
.search-options{display:flex;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-top:18px}
.search-options label{margin:0;flex:1;min-width:160px;font-size:14px;font-weight:600}
select{display:block;width:100%;font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--fg);margin-top:5px;min-width:0}
.search-options button{align-self:flex-end}
#search-help{font-size:14px;margin-bottom:0}
.result-status{font-size:14px;color:var(--muted);font-weight:600}
.search-result{padding:24px;border:1px solid var(--line);border-radius:15px;background:var(--panel);margin:16px 0}
.search-result h2{font-size:22px;line-height:1.4;margin:3px 0 12px}
.search-result h2 a{text-decoration:none}
.search-result a:hover{text-decoration:underline}
.result-category{color:var(--accent);text-transform:uppercase;letter-spacing:.07em;font-size:11px;font-weight:800;margin:0}
.result-section{font-size:13px;line-height:1.5;margin:7px 0}.result-section a{color:var(--muted)}
.result-excerpt{margin:10px 0;line-height:1.75}
.result-path{display:block;overflow-wrap:anywhere;font-size:12px;margin-top:14px}
mark{background:var(--highlight);color:var(--highlight-fg);border-radius:3px;padding:0 1px}
.empty-state{border:1px dashed var(--line);border-radius:15px;padding:25px;margin-top:25px}
.empty-state h2{margin-top:0}.example-queries,.button-group{display:flex;gap:8px;flex-wrap:wrap}
.example-queries button{border-radius:999px;padding:6px 14px;font-size:14px}
.search-explanation{margin-top:40px;font-size:14px}
.search-context{padding:14px 18px;background:var(--soft);border:1px solid var(--line);border-radius:12px;margin-bottom:26px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:14px}
.search-context span{flex:1 1 180px;overflow-wrap:anywhere;font-weight:600}
.search-context button{padding:5px 9px;font-size:12px}
.glossary-toolbar{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin:20px 0}
.glossary-toolbar button{font-size:13px;padding:7px 11px}
.glossary-group>h2{font-size:20px;color:var(--muted);font-weight:650}
.glossary-entry{padding:0;border-radius:13px;overflow:hidden;margin:12px 0;scroll-margin-top:18px}
.glossary-entry[open]{border-color:var(--accent)}
.glossary-entry:target{outline:2px solid var(--accent);outline-offset:3px}
.glossary-entry>summary{list-style:none;display:grid;grid-template-columns:76px minmax(0,1fr) auto 18px;gap:16px;align-items:start;padding:20px}
.glossary-entry>summary::-webkit-details-marker{display:none}
.glossary-entry>summary::after{content:'+';color:var(--accent);font-size:23px;font-weight:500;line-height:1.2;grid-column:4;grid-row:1}
.glossary-entry[open]>summary::after{content:'−'}
.term-symbol{font-size:22px;line-height:1.25;color:var(--accent);overflow-wrap:anywhere}
.term-summary{display:block;min-width:0}.term-full{display:block;font-size:14px;line-height:1.5;font-weight:700}
.term-short{display:block;font-weight:400;font-size:14px;line-height:1.65;color:var(--muted);margin-top:5px}
.tag{display:inline-block;font-size:10px;font-weight:650;line-height:1.4;border-radius:6px;padding:4px 6px;background:var(--soft);color:var(--accent);max-width:108px;text-align:center}
.term-detail{padding:0 22px 22px;margin-left:92px;font-size:15px}
.term-detail>p:first-child{margin-top:0}
.term-example{padding:13px 15px;background:var(--soft);border-radius:9px}
.term-sources{font-size:12px;color:var(--muted);line-height:1.8}
.term-sources a{overflow-wrap:anywhere}
.term-occurrences{font-size:13px;font-weight:650}
.glossary-methodology{font-size:14px;color:var(--muted);margin-top:40px}
.catalog-filter{width:100%}
@media(min-width:851px) and (max-width:1150px){.site-header{grid-template-columns:1fr auto auto;gap:10px}.header-search{grid-column:1/-1;grid-row:2}.site-header>span{grid-column:2;grid-row:1}.site-header>button{grid-column:3;grid-row:1}.glossary-entry>summary{grid-template-columns:70px minmax(0,1fr) 18px}.glossary-entry>summary::after{grid-column:3}.glossary-entry .tag{display:none}.term-detail{margin-left:86px}}
@media(max-width:850px){.site-header{position:static;grid-template-columns:1fr auto;padding:12px 18px;gap:10px}.site-header>a{font-size:15px}.site-header>span{grid-row:2;font-size:12px}.site-header>button{grid-column:2;grid-row:1}.header-search{grid-row:3;grid-column:1/-1}.layout aside{position:static;max-height:none;padding:16px 22px}aside h3{margin:4px 0;font-size:15px}aside a{padding:4px 0}html{scroll-padding-top:20px}.glossary-entry{scroll-margin-top:20px}}
@media(max-width:600px){main{padding:26px 18px}.search-panel{padding:18px}.search-options{gap:12px}.search-options label{flex-basis:100%}.search-result{padding:18px}.search-result h2{font-size:20px}.search-input-row{gap:6px}.search-input-row button{padding:8px 12px}.glossary-entry>summary{grid-template-columns:60px minmax(0,1fr) 14px;padding:16px;gap:12px}.glossary-entry>summary::after{grid-column:3}.glossary-entry .tag{display:none}.term-symbol{font-size:19px}.term-full{font-size:13px}.term-short{font-size:13px}.term-detail{margin-left:0;padding:0 16px 18px}.glossary-toolbar{align-items:flex-start}.discovery-panel{padding:20px}.discovery-panel h2{font-size:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{scroll-behavior:auto!important}}
@media print{.search-panel,.glossary-toolbar,.search-context,.example-queries,#more-results,.skip-link{display:none!important}.glossary-entry{break-inside:avoid;overflow:visible}.term-detail{margin-left:0}body{--panel:#fff;--fg:#000;--muted:#444;--accent:#164d3d}.search-result{break-inside:avoid}main{width:100%}}

/* Version 2.1: a single viewport-aware tooltip, shared by every glossary link. */
.term-link{cursor:pointer;text-underline-offset:3px}
.term-link abbr{cursor:inherit}
.term-link:hover,.term-link[data-tooltip-open]{color:var(--accent);border-bottom-style:solid}
.term-link:focus-visible{border-radius:3px}
h1 .term-link,h2 .term-link,h3 .term-link,h4 .term-link{font-weight:inherit}
.term-tooltip{position:fixed;z-index:50;left:12px;top:12px;width:360px;max-width:calc(100vw - 24px);padding:17px 19px;border:1px solid var(--accent);border-radius:13px;background:var(--panel);color:var(--fg);box-shadow:0 8px 28px rgb(0 0 0 / 16%);font:14px/1.6 system-ui,-apple-system,Segoe UI,sans-serif;overflow-wrap:anywhere;text-align:left;pointer-events:auto}
body.dark .term-tooltip{box-shadow:0 12px 32px rgb(0 0 0 / 42%)}
.term-tooltip::after{content:'';position:absolute;left:var(--tip-arrow-x,24px);width:10px;height:10px;background:var(--panel);transform:translateX(-50%) rotate(45deg)}
.term-tooltip[data-placement=above]::after{bottom:-6px;border-bottom:1px solid var(--accent);border-right:1px solid var(--accent)}
.term-tooltip[data-placement=below]::after{top:-6px;border-top:1px solid var(--accent);border-left:1px solid var(--accent)}
.term-tooltip-name{display:block;color:var(--accent);font-size:18px;line-height:1.35;letter-spacing:.03em}
.term-tooltip-full{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin:4px 0 10px}
.term-tooltip-short{display:block;font-size:14px;line-height:1.65}
.term-tooltip-hint{display:block;margin-top:11px;padding-top:9px;border-top:1px solid var(--line);color:var(--muted);font-size:11px;line-height:1.5}
@media(max-height:400px){.term-tooltip{padding:10px 14px;max-height:calc(100dvh - 24px);overflow-y:auto}.term-tooltip-hint{display:none}.term-tooltip-full{margin-bottom:5px}}
@media print{.term-tooltip{display:none!important}.term-link{color:inherit;border-bottom:0}}