:root{
  --bg:#f7f9fc;--surface:#ffffff;--surface-soft:#eef3f8;--ink:#17212b;--muted:#5b6774;--blue:#143f68;--blue-2:#2d6d9d;--blue-soft:#e8f0f7;--line:#d9e1e9;--focus:#1f6fb2;--danger:#9b2d30;
  --radius:10px;--shadow:0 5px 18px rgba(25,50,75,.06);--content:1180px;--narrow:760px;--header-h:72px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:17px;line-height:1.65;overflow-x:hidden}img,svg,video{max-width:100%;height:auto}a{color:var(--blue);text-decoration-thickness:.08em;text-underline-offset:.18em}a:hover{text-decoration-thickness:.12em}button,input,select,textarea{font:inherit}.container{width:min(calc(100% - 32px),var(--content));margin-inline:auto}.narrow{width:min(calc(100% - 32px),var(--narrow));margin-inline:auto}.skip-link{position:fixed;left:12px;top:10px;z-index:1000;background:#fff;color:var(--ink);padding:10px 14px;border:2px solid var(--focus);transform:translateY(-150%)}.skip-link:focus{transform:none}.site-header{position:sticky;top:0;z-index:100;background:rgba(247,249,252,.97);border-bottom:1px solid var(--line);backdrop-filter:saturate(130%) blur(8px)}.header-inner{min-height:var(--header-h);display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);min-width:max-content}.brand-mark{width:38px;height:38px;border-radius:8px;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800;letter-spacing:.03em;font-size:13px}.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-text strong{font-size:14px}.brand-text span{font-size:12px;color:var(--muted);margin-top:3px}.nav-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 11px;color:var(--ink)}.primary-nav{margin-left:auto}.primary-nav>ul{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:2px}.primary-nav a,.nav-dropdown>button{display:block;padding:9px 10px;border-radius:7px;color:var(--ink);text-decoration:none;font-size:14px;font-weight:650;background:none;border:0;cursor:pointer}.primary-nav a:hover,.primary-nav a:focus-visible,.nav-dropdown>button:hover,.nav-dropdown>button:focus-visible,.primary-nav .is-active{background:var(--blue-soft);color:var(--blue)}.nav-dropdown{position:relative}.nav-dropdown-menu{display:none;position:absolute;right:0;top:calc(100% + 8px);min-width:235px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:7px;box-shadow:var(--shadow);list-style:none;margin:0}.nav-dropdown.is-open .nav-dropdown-menu{display:block}.nav-dropdown-menu a{white-space:nowrap}.language-switcher{display:flex;align-items:center;gap:3px;padding-left:10px;border-left:1px solid var(--line)}.language-switcher a{padding:6px 7px;font-size:12px;border-radius:6px;text-decoration:none;color:var(--muted);font-weight:700}.language-switcher a[aria-current="true"]{background:var(--blue);color:#fff}.hero{background:var(--surface);border-bottom:1px solid var(--line);padding:66px 0}.hero-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,.7fr);gap:60px;align-items:center}.eyebrow{margin:0 0 12px;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:var(--blue-2)}h1,h2,h3{line-height:1.22;letter-spacing:-.018em}h1{font-size:clamp(2rem,5vw,3.7rem);margin:0 0 16px}h2{font-size:clamp(1.45rem,2.6vw,2.15rem);margin:0 0 14px}h3{font-size:1.16rem;margin:0 0 10px}.hero-secondary{font-size:1.18rem;color:var(--muted);margin:0 0 18px}.hero-lead{font-size:1.18rem;max-width:820px;color:#354351;margin:0 0 28px}.hero-note{border-left:3px solid var(--blue);padding:24px 0 24px 28px}.hero-note p{color:var(--muted);margin:10px 0 0}.equation-mark{font-family:Georgia,serif;font-size:2rem;color:var(--blue);letter-spacing:.05em}.button-row{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 17px;border-radius:8px;border:1px solid transparent;text-decoration:none;font-weight:750;cursor:pointer;transition:none}.button-primary{background:var(--blue);color:#fff}.button-primary:hover{background:#0e3357}.button-secondary{background:#fff;color:var(--blue);border-color:#a8bfd2}.button-secondary:hover{background:var(--blue-soft)}.button-light{background:#fff;color:var(--blue)}.button-small{min-height:38px;padding:7px 12px;font-size:14px}.section{padding:64px 0}.section-soft{background:var(--surface-soft);border-block:1px solid var(--line)}.section-accent{background:var(--blue);color:#fff}.section-heading{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.75fr);gap:45px;align-items:end;margin-bottom:30px}.section-heading p{margin:0;color:var(--muted)}.section-heading .eyebrow{margin-bottom:8px}.card-grid{display:grid;gap:16px}.research-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.research-card,.resource-card,.catalog-card,.contact-card,.info-box,.content-placeholder{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.research-card,.resource-card{padding:22px}.research-card p,.resource-card p{color:var(--muted);font-size:15px}.research-card h3 a,.resource-card h3 a,.catalog-card h2 a{color:var(--ink);text-decoration:none}.text-link{font-weight:750;text-decoration:none}.resource-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.section-action{margin-top:22px}.two-column{display:grid;grid-template-columns:1fr 1fr;gap:50px}.updates-panel{border-left:1px solid var(--line);padding-left:40px}.empty-state{color:var(--muted);font-style:italic}.subscribe-strip{display:flex;align-items:center;justify-content:space-between;gap:30px}.subscribe-strip p{max-width:760px;color:#dbe8f2;margin:0}.page-header{padding:54px 0 35px;background:var(--surface);border-bottom:1px solid var(--line)}.page-header h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:12px}.lead{font-size:1.12rem;color:var(--muted);max-width:900px;margin:0}.breadcrumbs{font-size:14px;color:var(--muted);padding:18px 0;display:flex;gap:8px;flex-wrap:wrap}.breadcrumbs a{text-decoration:none}.stack-lg{display:grid;gap:18px}.catalog-card{padding:26px}.catalog-card h2{font-size:1.4rem}.catalog-card p{color:var(--muted)}.meta-row{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.meta-row span{font-size:12px;background:var(--blue-soft);color:var(--blue);padding:5px 8px;border-radius:999px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:54px;align-items:start}.prose{max-width:820px}.prose p,.prose li{color:#344250}.prose h2{margin-top:38px}.prose h2:first-child{margin-top:0}.prose ul{padding-left:22px}.side-nav{position:sticky;top:calc(var(--header-h) + 22px);border-left:1px solid var(--line);padding-left:22px}.side-nav h2{font-size:1rem}.side-nav ul{list-style:none;margin:0;padding:0}.side-nav a{display:block;padding:7px 0;text-decoration:none;font-size:14px;color:var(--muted)}.side-nav .is-current{color:var(--blue);font-weight:800}.math-scroll{overflow-x:auto;overscroll-behavior-inline:contain;padding:8px 0;max-width:100%}.filters{display:flex;gap:12px;align-items:end;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:22px}.field{display:grid;gap:6px;min-width:150px}.field-grow{flex:1;min-width:240px}.field label,fieldset legend{font-size:13px;font-weight:750;color:#374658}input,select,textarea{width:100%;border:1px solid #bac7d3;border-radius:7px;background:#fff;color:var(--ink);padding:9px 10px;min-height:42px}input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:3px solid rgba(31,111,178,.25);outline-offset:2px}.catalog-count{font-size:14px;color:var(--muted);margin-bottom:12px}.publication-list{display:grid;gap:14px}.publication-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.publication-card h2{font-size:1.22rem;margin-bottom:8px}.publication-meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin:8px 0}.publication-card .abstract{font-size:15px;color:#43515e}.publication-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.book-card{display:grid;grid-template-columns:120px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;grid-column:span 1}.book-cover-wrap{aspect-ratio:2/3;display:grid;place-items:center;background:var(--surface-soft);border:1px solid var(--line);border-radius:7px;overflow:hidden}.book-cover{width:100%;height:100%;object-fit:contain}.book-cover-placeholder{font-size:12px;text-align:center;color:var(--muted);padding:10px}.book-card h2{font-size:1.15rem}.book-card p{font-size:14px;color:var(--muted)}.journal-subtitle{font-size:1.3rem;color:var(--blue);font-weight:750}.definition-list{display:grid;gap:0;border-top:1px solid var(--line)}.definition-list>div{display:grid;grid-template-columns:210px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}.definition-list dt{font-weight:750}.definition-list dd{margin:0;color:var(--muted);overflow-wrap:anywhere}.info-box{padding:20px}.contact-card{padding:28px;max-width:850px}.news-list{display:grid;gap:16px}.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.news-card time{font-size:13px;color:var(--muted)}.news-card h2{font-size:1.25rem;margin:6px 0}.news-card p{color:var(--muted)}.subscribe-form{display:grid;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.subscribe-form fieldset{border:1px solid var(--line);border-radius:8px;padding:14px}.check{display:block;margin:8px 0}.check input{width:auto;min-height:0;margin-right:6px}.form-status{color:var(--muted);font-size:14px;margin:0}.content-placeholder{padding:24px;color:var(--muted)}.link-list{padding-left:20px}.person-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.person-card,.event-card,.project-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.person-card h2,.event-card h2,.project-card h2{font-size:1.2rem}.person-card p,.event-card p,.project-card p{color:var(--muted);font-size:15px}.event-list,.project-list{display:grid;gap:16px}.event-meta{font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}.site-footer{margin-top:20px;background:#101d29;color:#d9e2ea;padding:42px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}.footer-brand strong{display:block;color:#fff}.footer-brand span{font-size:14px;color:#aebdca}.footer-nav,.footer-secondary{list-style:none;padding:0;margin:0}.footer-nav li,.footer-secondary li{margin:6px 0}.site-footer a{color:#d9e2ea;text-decoration:none}.footer-bottom{margin-top:26px;padding-top:18px;border-top:1px solid #304150;display:flex;justify-content:space-between;gap:20px;color:#9fb0be;font-size:13px}.back-to-top{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--blue);box-shadow:var(--shadow);cursor:pointer}.error-page{min-height:80vh;display:grid;place-items:center;text-align:center}.error-page .container{padding-block:80px}
@media (max-width:1400px){.brand-text{display:none}}
@media (max-width:1120px){.brand-text strong{max-width:240px}.primary-nav a,.nav-dropdown>button{padding-inline:8px;font-size:13px}.research-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-grid{gap:35px}}
@media (max-width:1120px){:root{--header-h:64px}.container{width:min(calc(100% - 28px),var(--content))}.header-inner{min-height:64px;flex-wrap:wrap;padding:10px 0}.nav-toggle{display:inline-flex}.primary-nav{display:none;order:3;width:100%;margin:0}.primary-nav.is-open{display:block}.primary-nav>ul{display:block;padding:5px 0 12px}.primary-nav a,.nav-dropdown>button{width:100%;text-align:left;padding:10px}.nav-dropdown-menu{position:static;display:none;box-shadow:none;border:0;border-left:2px solid var(--line);border-radius:0;margin:2px 0 6px 13px;padding:2px 0 2px 8px}.nav-dropdown.is-open .nav-dropdown-menu{display:block}.language-switcher{margin-left:auto}.hero{padding:48px 0}.hero-grid,.section-heading,.two-column,.article-layout{grid-template-columns:1fr}.hero-note{border-left:0;border-top:1px solid var(--line);padding:22px 0 0}.section{padding:50px 0}.section-heading{gap:12px;align-items:start}.updates-panel{border-left:0;border-top:1px solid var(--line);padding:28px 0 0}.side-nav{position:static;border-left:0;border-top:1px solid var(--line);padding:22px 0 0}.side-nav ul{columns:2}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.subscribe-strip{align-items:flex-start;flex-direction:column}}
@media (max-width:640px){body{font-size:16px}.person-grid{grid-template-columns:1fr}.brand-text{display:none}.language-switcher{padding-left:4px;border-left:0}.language-switcher a{padding:6px}.hero{padding:38px 0}.hero-secondary{font-size:1rem}.hero-lead{font-size:1.04rem}.research-grid,.resource-grid,.book-grid{grid-template-columns:1fr}.book-card{grid-template-columns:96px 1fr}.section{padding:42px 0}.button-row .button{width:100%}.definition-list>div{grid-template-columns:1fr;gap:3px}.filters{display:grid;grid-template-columns:1fr}.field,.field-grow{min-width:0}.filters .button{width:100%}.side-nav ul{columns:1}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{flex-direction:column}.page-header{padding:38px 0 28px}.article-layout{gap:34px}.publication-actions .button{flex:1}.book-cover-wrap{max-width:110px}.subscribe-form{padding:18px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}