/* PREPHYSICS BUILD v48.6-20260730 */
:root{--night:#080b11;--night2:#0e131e;--ink:#141414;--paper:#f6f3ed;--paper2:#ebe7df;--muted:#62666c;--blue:#315d91;--blue2:#6da9e9;--line:#cbc7be;--line-dark:#2b313a;--pass:#5eaa82;--open:#d4a952;--loa:#d37a70;--serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;--sans:"Avenir Next","Segoe UI",Arial,sans-serif;--mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;--max:1240px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--sans);-webkit-font-smoothing:antialiased}img{display:block;max-width:100%;height:auto}a{color:inherit}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.05;letter-spacing:-.025em}h1,h2,h3{hyphens:none}.wrap{width:min(var(--max),calc(100% - 4rem));margin:auto}.site-header{height:88px;background:rgba(8,11,17,.97);border-bottom:1px solid var(--line-dark);color:#fff;position:relative;z-index:20}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:14px;text-decoration:none}.brand img{width:54px;height:54px;border-radius:50%}.brand-copy strong{font:30px/1 var(--serif);font-weight:400}.brand-copy span{display:block;margin-top:5px;font:600 10px/1 var(--mono);letter-spacing:.22em;color:#aeb7c4}.nav{display:flex;align-items:center;gap:27px}.nav a{font:650 11px/1 var(--mono);letter-spacing:.13em;text-decoration:none;text-transform:uppercase;color:#d9dce1}.nav a:hover{color:#fff}.lang{border-left:1px solid #353b45;padding-left:22px}.mobile-nav{display:none;color:#fff}.mobile-nav summary{list-style:none;cursor:pointer;font:700 11px var(--mono);letter-spacing:.15em;text-transform:uppercase}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav nav{position:absolute;left:0;right:0;top:88px;background:#0e131c;border-bottom:1px solid #363d47;padding:18px 24px;display:grid;gap:12px}.mobile-nav a{font:600 12px var(--mono);letter-spacing:.12em;text-transform:uppercase;text-decoration:none}
.hero{background:radial-gradient(circle at 78% 42%,rgba(47,91,144,.24),transparent 25%),linear-gradient(180deg,#080b11,#0a0e16);color:#fff;min-height:680px;display:flex;align-items:center;position:relative;overflow:hidden}.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px);background-size:90px 90px;mask-image:linear-gradient(to right,#000,transparent 78%);opacity:.4}.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:5rem;align-items:center;padding:78px 0 84px}.eyebrow,.section-kicker{font:650 12px/1.4 var(--mono);letter-spacing:.2em;text-transform:uppercase}.eyebrow{color:#a5b9d1}.hero h1{font-size:clamp(56px,6.4vw,92px);max-width:820px;margin:24px 0 26px}.hero .lead{max-width:760px;color:#c7cbd1;font-size:21px;line-height:1.6}.hero-actions{display:flex;gap:20px;align-items:center;margin-top:32px}.button{display:inline-flex;min-height:48px;padding:0 24px;align-items:center;justify-content:center;background:#f7f5f0;color:#0a0d12;text-decoration:none;font:700 11px var(--mono);letter-spacing:.14em;text-transform:uppercase}.text-link{font:700 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:3px}.hero-emblem{position:relative;display:grid;place-items:center}.hero-emblem::before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(116,164,220,.18);border-radius:50%;box-shadow:0 0 90px rgba(45,92,147,.2) inset}.hero-emblem img{width:min(355px,28vw);height:auto;border-radius:50%;box-shadow:0 22px 70px rgba(0,0,0,.58),0 0 0 1px rgba(255,255,255,.12)}
.intro{padding:110px 0 100px}.intro-grid{display:grid;grid-template-columns:260px minmax(0,1fr);gap:70px}.section-kicker{color:#657180;border-top:1px solid #7f858b;padding-top:18px}.intro h2{font-size:clamp(44px,5vw,70px);max-width:920px;margin-bottom:36px}.intro-copy-group{max-width:900px}.intro-copy{font-family:var(--serif);font-size:25px;line-height:1.5;max-width:900px;margin-bottom:1.05em}.intro-copy:last-child{margin-bottom:0}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:62px}.principle{border-top:1px solid var(--ink);padding-top:20px}.principle .num{font:600 11px var(--mono);letter-spacing:.14em;color:#68717a}.principle h3{font-size:28px;margin:15px 0 10px}.principle p{font-size:15px;color:var(--muted)}
.diagram-section{background:#050914;color:#fff;padding:100px 0}.diagram-head{display:grid;grid-template-columns:250px minmax(0,1fr);gap:70px;align-items:end;margin-bottom:46px}.diagram-head .section-kicker{color:#899bb4;border-color:#40516a}.diagram-head h2{font-size:clamp(48px,5.2vw,74px);margin-bottom:18px}.diagram-head p{color:#aeb8c8;font-size:18px;max-width:760px}.diagram-frame{border:1px solid #263c5d;background:#060b16;padding:18px;box-shadow:0 35px 100px rgba(0,0,0,.38)}.diagram-frame picture,.diagram-frame img{width:100%;height:auto}.diagram-note{display:flex;justify-content:space-between;gap:20px;color:#7f91ad;font:600 10px var(--mono);letter-spacing:.12em;text-transform:uppercase;margin-top:14px}.diagram-mobile{display:none}
.applications{padding:105px 0}.applications-head{display:grid;grid-template-columns:250px minmax(0,1fr);gap:70px;margin-bottom:55px}.applications h2{font-size:clamp(46px,5vw,68px);max-width:900px}.applications-intro{font-size:18px;color:var(--muted);max-width:780px}.application-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--ink);border-left:1px solid var(--line)}.application{padding:34px 38px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:245px}.application .tag{font:650 10px var(--mono);letter-spacing:.15em;color:#637183;text-transform:uppercase}.application h3{font-size:33px;margin:18px 0 14px}.application p{font-size:15px;color:var(--muted);margin-bottom:0}.metrics{display:grid;grid-template-columns:repeat(4,1fr);margin-top:55px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.metric{padding:24px 18px;border-right:1px solid var(--line)}.metric:last-child{border-right:0}.metric strong{font:42px var(--serif);display:block}.metric span{font:650 10px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:#68717a}
.research{background:#e9e5dc;padding:105px 0}.research-head{display:grid;grid-template-columns:250px minmax(0,1fr);gap:70px;margin-bottom:35px}.research h2{font-size:clamp(46px,5vw,68px)}.paper{display:grid;grid-template-columns:80px minmax(0,1fr) 150px;gap:34px;padding:32px 0;border-top:1px solid #a9a49b;align-items:start}.paper .code{font:650 11px var(--mono);letter-spacing:.12em;color:#66707b}.paper h3{font-size:28px;margin-bottom:10px}.paper p{font-size:15px;color:#5f6266;max-width:850px}.paper .doi{font:700 10px var(--mono);letter-spacing:.12em;text-transform:uppercase;justify-self:end;text-decoration:none;border-bottom:1px solid currentColor}
.books{background:#070a10;color:#fff;padding:105px 0}.books-head{display:grid;grid-template-columns:250px minmax(0,1fr);gap:70px;margin-bottom:60px}.books .section-kicker{color:#8896aa;border-color:#47505d}.books h2{font-size:clamp(48px,5vw,70px)}.books-head p{color:#aeb2b9;max-width:760px}.trilogy{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}.book-object{position:relative;width:76%;margin:0 auto 34px;transform:perspective(1100px) rotateY(-7deg)}.book-object::before{content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:17px;background:linear-gradient(90deg,#191c21,#454a51);transform:skewY(-10deg);transform-origin:right;z-index:-1}.book-object img{width:100%;box-shadow:24px 34px 70px rgba(0,0,0,.55)}.book-kicker{font:650 10px var(--mono);letter-spacing:.14em;color:#a4abb5;text-transform:uppercase}.book h3{font-size:31px;margin:16px 0 12px}.book p{color:#aeb2b9;font-size:15px}.book-data{font:10px/1.7 var(--mono);color:#9ca3ad}.book .text-link{display:inline-block;margin-top:15px;color:#fff}
.authors{padding:95px 0}.authors-grid{display:grid;grid-template-columns:250px minmax(0,1fr);gap:70px}.authors h2{font-size:clamp(44px,5vw,66px);margin-bottom:22px}.authors p{max-width:800px;color:var(--muted)}.author-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}.author-card{border:1px solid var(--line);padding:26px}.author-card h3{font-size:28px;margin-bottom:8px}.author-card .meta{font:650 10px var(--mono);letter-spacing:.12em;color:#68717a}.site-footer{background:#080b11;color:#b9bec6;padding:45px 0}.footer-inner{display:flex;justify-content:space-between;gap:30px}.footer-inner img{width:50px;border-radius:50%}.footer-brand{display:flex;gap:14px;align-items:center}.footer-name{font:25px var(--serif);color:#fff}.footer-links{display:flex;gap:20px;align-items:center;font:650 10px var(--mono);letter-spacing:.12em;text-transform:uppercase}.footer-links a{text-decoration:none}
@media(max-width:900px){.wrap{width:calc(100% - 2.4rem)}.nav{display:none}.mobile-nav{display:block}.hero{min-height:0}.hero-grid{grid-template-columns:1fr 250px;gap:2rem;padding:62px 0 70px}.hero h1{font-size:59px}.hero .lead{font-size:18px}.hero-emblem::before{width:300px;height:300px}.hero-emblem img{width:240px}.intro-grid,.diagram-head,.applications-head,.research-head,.books-head,.authors-grid{grid-template-columns:1fr;gap:26px}.principles{grid-template-columns:1fr}.application-grid{grid-template-columns:1fr 1fr}.trilogy{gap:25px}.book-object{width:82%}.paper{grid-template-columns:65px 1fr}.paper .doi{grid-column:2;justify-self:start}.metrics{grid-template-columns:repeat(2,1fr)}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}.author-cards{grid-template-columns:1fr 1fr}}
@media(max-width:620px){body{font-size:16px}.wrap{width:calc(100% - 2rem)}.site-header{height:76px}.brand img{width:44px;height:44px}.brand-copy strong{font-size:25px}.brand-copy span{font-size:8px}.mobile-nav nav{top:76px}.hero-grid{display:block;padding:50px 0 58px}.hero h1{font-size:clamp(44px,13vw,58px);line-height:1.01;margin:19px 0 22px;max-width:350px}.hero .lead{font-size:17px;line-height:1.52}.hero-emblem{display:none}.hero-actions{align-items:flex-start;flex-direction:column;gap:16px;margin-top:25px}.button{width:100%;max-width:330px}.intro,.applications,.research,.books,.authors{padding:76px 0}.intro-copy{font-size:21px}.intro h2,.applications h2,.research h2,.books h2,.authors h2{font-size:42px}.principles{margin-top:42px}.diagram-section{padding:76px 0}.diagram-frame{padding:8px}.diagram-desktop{display:none}.diagram-mobile{display:block}.diagram-note{display:block;font-size:8px}.diagram-note span{display:block;margin-top:7px}.application-grid{grid-template-columns:1fr}.application{min-height:0;padding:28px 24px}.metrics{grid-template-columns:1fr}.metric,.metric:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.metric:last-child{border-bottom:0}.paper{grid-template-columns:1fr;gap:8px;padding:28px 0}.paper .doi{grid-column:1}.trilogy{grid-template-columns:1fr;gap:65px}.book-object{width:min(260px,72%);margin-left:0}.author-cards{grid-template-columns:1fr}.footer-inner{display:block}.footer-links{margin-top:25px;flex-wrap:wrap}.applications-head,.research-head,.books-head{margin-bottom:35px}.research h2{font-size:clamp(36px,10.5vw,42px);line-height:1.04}.paper h3{font-size:clamp(23px,6.6vw,27px);line-height:1.12}.diagram-note{line-height:1.55;letter-spacing:.08em}}
@media print{.site-header,.hero-actions,.footer-links{display:none}.hero,.diagram-section,.books,.site-footer{background:#fff;color:#000}.hero{min-height:0}.hero-grid{padding:1cm 0}.hero-emblem{display:none}.diagram-frame{border:1px solid #000}.wrap{width:100%}}
.application-grid,.application,.paper,.book,.author-card{min-width:0}.application h3,.application p,.paper h3,.paper p{overflow-wrap:break-word;word-break:normal;hyphens:auto}
@media(max-width:620px){.mobile-nav nav a{max-width:100%;overflow-wrap:anywhere}.footer-links{max-width:100%}.footer-links a{max-width:100%}}


/* V47.1 corrections after independent visual review */
.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}
.balanced-title{text-wrap:balance}
.diagram-copy,.diagram-note-wrap{width:min(1160px,calc(100% - 3rem));margin-inline:auto}
.diagram-canvas{width:min(1160px,calc(100% - 3rem));margin-inline:auto}
.diagram-note-wrap .diagram-note{margin-top:14px}
.application-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.application{min-height:230px}
.profile-links,.programme-links{display:flex;flex-wrap:wrap;gap:14px;margin-top:20px}
.profile-links a,.programme-links a{font:700 10px var(--mono);letter-spacing:.12em;text-transform:uppercase;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:3px}
.programme-links{margin-top:26px}
@media(max-width:899px){
  .diagram-desktop{display:none!important}.diagram-mobile{display:block!important}
  .diagram-canvas{width:100%;max-width:none}
  .diagram-canvas .diagram-frame{width:min(540px,100%);margin-inline:auto;padding:0}
  .diagram-copy,.diagram-note-wrap{width:calc(100% - 2.4rem)}
  .application-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:620px){
  .hero h1{font-size:clamp(36px,10.4vw,43px);line-height:.99;max-width:none;text-wrap:balance}
  html[lang="de"] .hero h1{font-size:clamp(32px,9.5vw,38px)}
  .diagram-copy,.diagram-note-wrap{width:calc(100% - 2rem)}
  .diagram-canvas .diagram-frame{width:100%;max-width:none;border-left:0;border-right:0;padding:0}
  .application-grid{grid-template-columns:1fr}
}
@media(min-width:621px) and (max-width:899px){html[lang="de"] .hero h1{font-size:52px}}


/* V47.2: three dedicated diagram compositions */
.diagram-tablet,.diagram-mobile-panels{display:none}
.diagram-mobile-panels{background:#060b16}
.diagram-mobile-panel{margin:0;border-bottom:1px solid #233653}
.diagram-mobile-panel:last-child{border-bottom:0}
.diagram-mobile-panel img{width:100%;height:auto}
.diagram-frame{overflow:hidden}
@media (min-width:1100px){
  .diagram-desktop{display:block!important}.diagram-tablet,.diagram-mobile-panels{display:none!important}
  .diagram-canvas{width:min(1280px,calc(100% - 3rem))}
}
@media (min-width:621px) and (max-width:1099px){
  .diagram-desktop,.diagram-mobile-panels{display:none!important}.diagram-tablet{display:block!important}
  .diagram-canvas{width:calc(100% - 2.4rem);max-width:880px}
  .diagram-canvas .diagram-frame{width:100%;max-width:none;margin-inline:auto;padding:10px}
  .diagram-head h2{font-size:54px}
}
@media (max-width:620px){
  .diagram-desktop,.diagram-tablet{display:none!important}.diagram-mobile-panels{display:block!important}
  .diagram-canvas{width:100%;max-width:none}
  .diagram-canvas .diagram-frame{width:100%;max-width:none;border-left:0;border-right:0;padding:0;background:#050914}
  .diagram-mobile-panel{width:100%}
  .diagram-mobile-panel img{display:block;width:100%}
  .diagram-note{line-height:1.6}
}
@media (min-width:621px) and (max-width:899px){
  .application-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}


/* V47 full-site components */
.skip-link{position:fixed;left:1rem;top:-8rem;z-index:1000;background:#fff;color:#080b11;padding:.85rem 1rem;font:700 12px var(--mono);text-transform:uppercase;letter-spacing:.08em}.skip-link:focus{top:1rem}
.nav a[aria-current="page"]{color:#fff;border-bottom:1px solid #fff;padding-bottom:5px}
.lang a[aria-current="true"]{color:#fff}.mobile-nav a[aria-current="page"]{color:#fff;text-decoration:underline;text-underline-offset:5px}
.page-hero{position:relative;min-height:500px;background:radial-gradient(circle at 82% 48%,rgba(47,91,144,.22),transparent 23%),linear-gradient(180deg,#080b11,#0a0e16);color:#fff;display:flex;align-items:center;overflow:hidden;border-bottom:1px solid var(--line-dark)}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.014) 1px,transparent 1px);background-size:90px 90px;mask-image:linear-gradient(to right,#000,transparent 80%);opacity:.4}
.page-hero>.wrap{position:relative;padding:76px 400px 76px 0}.breadcrumbs{font:650 10px/1.4 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:#929ba8;margin-bottom:42px}.breadcrumbs a{text-decoration:none}.page-hero .eyebrow{margin-bottom:16px}.page-hero h1{font-size:clamp(58px,6.4vw,92px);max-width:900px;margin-bottom:22px}.page-hero .lead{font-size:21px;line-height:1.55;color:#c5cad2;max-width:760px}.page-hero-emblem{position:absolute;right:max(5vw,55px);top:50%;transform:translateY(-45%);width:min(300px,25vw);margin:0}.page-hero-emblem::before{content:"";position:absolute;inset:-34px;border:1px solid rgba(116,164,220,.17);border-radius:50%;box-shadow:0 0 80px rgba(45,92,147,.18) inset}.page-hero-emblem img{position:relative;width:100%;border-radius:50%;box-shadow:0 25px 70px rgba(0,0,0,.58),0 0 0 1px rgba(255,255,255,.12)}
.sec{padding:96px 0;background:var(--paper)}.sec.tinted{background:#e9e5dc}.g{display:grid;grid-template-columns:220px minmax(0,1fr);gap:64px}.rail{border-top:1px solid #777f88;padding-top:16px;color:#68717a;font:650 11px/1.6 var(--mono);letter-spacing:.14em;text-transform:uppercase}.rail b{display:block;font:34px/1 var(--serif);font-weight:400;color:var(--ink);letter-spacing:0;margin-bottom:14px}.section-content{min-width:0}.section-head{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(240px,.65fr);gap:55px;align-items:start;margin-bottom:42px}.section-head h2{font-size:clamp(38px,4.4vw,62px);margin-bottom:0}.section-head p{color:var(--muted);font-size:17px;line-height:1.7}.grid{display:grid;gap:22px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{border:1px solid var(--line);background:rgba(255,255,255,.34);padding:30px}.card h2,.card h3{font-size:29px;margin-bottom:14px}.card p{color:var(--muted);font-size:15px;margin-bottom:0}.card .meta{font:650 10px/1.5 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:#66717d;margin-bottom:16px}.link-row{display:flex;gap:.7rem 1.4rem;flex-wrap:wrap;margin-top:20px}.link-row a{font:700 10px var(--mono);letter-spacing:.1em;text-transform:uppercase;text-underline-offset:4px}.actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center;margin-top:28px}.button.ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}.button.ghost:hover,.button.ghost:focus-visible{background:var(--ink);color:#fff}.cta{border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:34px 0;display:flex;justify-content:space-between;gap:32px;align-items:center}.cta h2{font-size:34px;margin-bottom:8px}.cta p{margin-bottom:0;color:var(--muted)}
.architecture{margin:0}.responsive-architecture{border:1px solid #263c5d;background:#060b16;box-shadow:0 35px 90px rgba(0,0,0,.18);overflow:hidden}.responsive-architecture picture,.responsive-architecture img{display:block;width:100%;height:auto}.responsive-architecture .diagram-tablet,.responsive-architecture .diagram-mobile-panels{display:none}.architecture figcaption{display:flex;justify-content:space-between;gap:20px;color:#68717a;font:650 10px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;margin-top:14px}.open-full{white-space:nowrap}.lightbox{position:fixed;inset:0;z-index:120;background:rgba(0,0,0,.97);display:none;overflow-y:auto;padding:5.25rem 2rem 5rem}.lightbox:target{display:block}.lightbox-content{width:min(1600px,100%);margin:0 auto}.lightbox-content picture,.lightbox-content img{display:block;width:100%;height:auto}.lightbox-content .lb-tablet,.lightbox-content .lb-mobile-panels{display:none}.lb-close{position:fixed;right:1.4rem;top:.8rem;z-index:2;color:#fff;font-size:2.5rem;line-height:1;text-decoration:none}.lb-bar{position:fixed;left:0;right:0;bottom:0;z-index:2;display:flex;justify-content:flex-end;padding:1rem 2rem;background:linear-gradient(transparent,rgba(0,0,0,.96) 35%);color:#fff;font:650 10px var(--mono);letter-spacing:.08em;text-transform:uppercase}.lb-bar a{color:#fff;text-underline-offset:4px}
.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:42px}.book-card{border-top:1px solid var(--ink);padding-top:24px}.book-card figure{margin:0 0 28px}.book-card figure img{width:76%;margin:0 auto;box-shadow:24px 32px 68px rgba(0,0,0,.24);transform:perspective(1000px) rotateY(-6deg)}.book-body h3{font-size:30px;margin:16px 0 13px}.book-body>p{font-size:15px;color:var(--muted)}.pill{display:inline-flex;border:1px solid currentColor;padding:6px 9px;font:700 9px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase}.published{color:#37765a}.book-details{display:grid;gap:5px;margin:18px 0;color:var(--muted);font:12px/1.55 var(--mono)}.book-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.availability-note{color:var(--muted);font-size:14px}.book-feature{display:grid;grid-template-columns:minmax(260px,340px) minmax(0,1fr);gap:58px;align-items:start}.book-feature .cover img{box-shadow:25px 34px 70px rgba(0,0,0,.25);transform:perspective(1000px) rotateY(-5deg)}.book-feature h2{font-size:clamp(38px,4vw,58px);margin:20px 0}.detail-list{display:grid;grid-template-columns:150px 1fr;gap:8px 20px;margin:28px 0}.detail-list dt{font:650 10px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:#6d7680}.detail-list dd{margin:0;color:var(--muted)}
.record-list{border-top:1px solid var(--ink)}.record{display:grid;grid-template-columns:60px minmax(0,1fr) 110px;gap:28px;align-items:start;padding:28px 0;border-bottom:1px solid var(--line)}.record .idx{font:650 10px var(--mono);color:#69727d}.record h2,.record h3{font-size:25px;margin-bottom:8px}.record p{color:var(--muted);font-size:15px;margin-bottom:0}.record .doi,.doi{font:700 10px var(--mono);letter-spacing:.1em;text-transform:uppercase;text-decoration:none;border-bottom:1px solid currentColor;justify-self:end;white-space:nowrap}.profile{border-top:1px solid var(--ink);padding-top:24px}.profile h2,.profile h3{font-size:35px}.prose-section .prose{max-width:850px}.prose h2{font-size:39px;margin:50px 0 14px}.prose h3{font-size:27px;margin:36px 0 12px}.prose p,.prose li{color:#313234}.prose ul,.prose ol{padding-left:1.35rem}
@media(max-width:1099px){.responsive-architecture .diagram-desktop,.responsive-architecture .diagram-mobile-panels{display:none!important}.responsive-architecture .diagram-tablet{display:block!important}.page-hero>.wrap{padding-right:330px}.page-hero-emblem{width:250px}.grid.four{grid-template-columns:repeat(2,1fr)}.book-grid{gap:25px}.section-head{grid-template-columns:1fr}.g{grid-template-columns:180px 1fr;gap:40px}}
@media(max-width:900px){.page-hero{min-height:0}.page-hero>.wrap{padding:60px 0 40px}.page-hero-emblem{position:relative;right:auto;top:auto;transform:none;width:170px;margin:0 auto 55px}.page-hero h1{font-size:clamp(48px,9vw,66px)}.g{grid-template-columns:1fr;gap:22px}.rail{max-width:190px}.grid.three,.book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.book-feature{grid-template-columns:240px 1fr;gap:36px}.record{grid-template-columns:50px 1fr}.record .doi{grid-column:2;justify-self:start}.footer-inner{align-items:center}}
@media(max-width:620px){.page-hero>.wrap{padding:48px 0 30px}.breadcrumbs{margin-bottom:28px}.page-hero .eyebrow{font-size:10px}.page-hero h1{font-size:clamp(42px,13vw,55px)}.page-hero .lead{font-size:17px}.page-hero-emblem{width:130px;margin-bottom:44px}.sec{padding:70px 0}.section-head h2{font-size:38px}.grid.two,.grid.three,.grid.four,.book-grid{grid-template-columns:1fr}.card{padding:25px}.cta{display:block}.cta .button{margin-top:20px}.responsive-architecture .diagram-desktop,.responsive-architecture .diagram-tablet{display:none!important}.responsive-architecture .diagram-mobile-panels{display:block!important}.responsive-architecture{margin-left:calc((100vw - 100%)/-2);margin-right:calc((100vw - 100%)/-2);border-left:0;border-right:0}.responsive-architecture .diagram-mobile-panel{margin:0;border-bottom:1px solid #233653}.responsive-architecture .diagram-mobile-panel:last-child{border-bottom:0}.architecture figcaption{display:block;line-height:1.7}.architecture figcaption .open-full{display:inline-block;margin-top:8px}.book-card figure img{width:min(270px,76%)}.book-feature{grid-template-columns:1fr}.book-feature .cover{max-width:260px}.detail-list{grid-template-columns:1fr;gap:4px}.detail-list dt{margin-top:10px}.record{grid-template-columns:42px 1fr;gap:16px}.record h2,.record h3{font-size:22px}.prose h2{font-size:32px}.footer-inner{display:grid;gap:22px}.footer-links{flex-wrap:wrap}}
@media print{.page-hero-emblem,.lightbox,.open-full{display:none!important}.page-hero{min-height:0;background:#fff!important;color:#111!important}.page-hero>.wrap{padding:1cm 0}.page-hero h1,.page-hero .lead{color:#111!important}.sec{padding:.8cm 0}.card{break-inside:avoid}.responsive-architecture{border:1px solid #777;box-shadow:none}.responsive-architecture .diagram-desktop{display:block!important}.responsive-architecture .diagram-tablet,.responsive-architecture .diagram-mobile-panels{display:none!important}}

.research-topic-link{display:block;text-decoration:none;color:inherit}.research-topic-link:hover h3,.research-topic-link:focus-visible h3{text-decoration:underline;text-underline-offset:5px}

/* Final mobile interaction safeguards */
.mobile-nav summary{display:inline-flex;min-width:44px;min-height:44px;align-items:center;justify-content:center;padding:.6rem .25rem}
@media(max-width:620px){.open-full{white-space:normal;overflow-wrap:anywhere}}

.grid>*{min-width:0}
@media(max-width:620px){.card h2,.card h3{font-size:26px;overflow-wrap:anywhere}}

/* WCAG AA metadata contrast on light and tinted surfaces */
.intro .section-kicker,
.applications .section-kicker,
.authors .section-kicker,
.principle .num,
.application .tag,
.metric span,
.paper .code,
.author-card .meta,
.rail,
.card .meta,
.detail-list dt,
.record .idx,
.architecture figcaption{color:#59636e}
.research .section-kicker{color:#59636e}


/* V47.1 image-ratio correction: CSS width overrides must never retain HTML pixel heights. */
.hero-emblem img,.page-hero-emblem img,.book-object img,.book-card figure img,.book-feature .cover img{height:auto;object-fit:contain}
.page-hero-emblem img{aspect-ratio:1/1}
.footer-inner img{height:50px;aspect-ratio:1/1;object-fit:cover}

/* V48: equal L1-L3 hierarchy and one exact 3D book component */
.book-object,.book-card figure,.book-feature .cover{position:relative;transform:none!important}
.book-object::before{content:none!important}
.book-object img,.book-card figure img,.book-feature .cover img{display:block;width:100%;height:auto;object-fit:contain;transform:none!important;box-shadow:none!important;margin-inline:auto}
.book-object{width:90%;margin:0 auto 28px}
.book-card figure{display:grid;place-items:center;min-height:390px;margin:0 0 24px}
.book-card figure img{width:min(100%,390px)}
.book-feature .cover{display:grid;place-items:start center}
.book-feature .cover img{width:min(100%,390px)}
@media(max-width:900px){.book-card figure{min-height:340px}.book-object{width:96%}}
@media(max-width:620px){.book-object{width:min(320px,92%);margin-inline:auto}.book-card figure{min-height:0}.book-card figure img,.book-feature .cover img{width:min(330px,96%)}}

/* V48.5: tablet typography, collision prevention and balanced information cards */
.card h2,.card h3{line-height:1.08;hyphens:manual;word-break:normal;overflow-wrap:normal}
.grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}
.page-hero h1{hyphens:manual;word-break:normal;overflow-wrap:normal}
@media (min-width:901px) and (max-width:1150px){
  .page-hero>.wrap{padding-right:300px}
  .page-hero-emblem{right:44px;width:220px}
  .page-hero h1{font-size:clamp(48px,5.25vw,60px);max-width:650px;line-height:1.02}
  html[lang="de"] .page-hero h1{font-size:clamp(46px,5vw,56px)}
  .g{grid-template-columns:180px minmax(0,1fr);gap:40px}
  .grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid.three.balanced-three>:last-child{grid-column:1/-1}
  .grid.three.balanced-three>:last-child p{max-width:760px}
  .card h2,.card h3{font-size:clamp(24px,2.55vw,28px)}
  .section-head h2{font-size:clamp(39px,4.35vw,51px);line-height:1.07}
}
@media (min-width:621px) and (max-width:900px){
  .grid.three.balanced-three>:last-child{grid-column:1/-1}
  .grid.three.balanced-three>:last-child p{max-width:720px}
  .card h2,.card h3{font-size:clamp(24px,3.2vw,28px)}
  .section-head h2{font-size:clamp(38px,5.6vw,48px);line-height:1.08}
}
@media (max-width:620px){
  .grid.four{grid-template-columns:1fr}
  .grid.three.balanced-three>:last-child{grid-column:auto}
  .card h2,.card h3{overflow-wrap:anywhere}
  .page-hero h1{overflow-wrap:normal}
}


/* V48.3: mobile editorial and overflow corrections */
@media(max-width:620px){
  .card h2,.card h3{font-size:clamp(23px,6.6vw,27px);overflow-wrap:break-word;word-break:normal;hyphens:manual}
  .page-hero h1{font-size:clamp(40px,12vw,52px);line-height:1.02;hyphens:manual}
  .diagram-mobile-panel img{width:100%;height:auto}
}

@media(max-width:1099px){.lightbox-content .lb-desktop,.lightbox-content .lb-mobile-panels{display:none}.lightbox-content .lb-tablet{display:block}}@media(max-width:620px){.lightbox{padding:4.5rem 0 4.25rem}.lightbox-content .lb-desktop,.lightbox-content .lb-tablet{display:none}.lightbox-content .lb-mobile-panels{display:block}.lightbox-content .lb-mobile-panel{margin:0;border-bottom:1px solid #233653}.lightbox-content .lb-mobile-panel:last-child{border-bottom:0}.lb-close{right:.8rem;top:.65rem}.lb-bar{justify-content:center;padding:.9rem 1rem}}

/* V48.7 — central architecture launch */
.architecture figcaption{margin-top:0!important;display:grid!important;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;padding:24px 26px;background:#0b1220;border:1px solid #263c5d;border-top:0;color:#eef3fa!important;text-transform:none!important;letter-spacing:0!important;font:400 16px/1.35 var(--sans)!important}
.architecture-caption-copy{display:grid;gap:5px}.architecture-caption-kicker{font:700 10px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:#75b5f3}.architecture-caption-title{font:400 25px/1.08 var(--serif);letter-spacing:-.015em;color:#fff}.architecture-caption-note{font:400 13px/1.45 var(--sans);color:#aebad0}
.architecture .open-full{display:inline-flex!important;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:0 22px;border:1px solid #75b5f3;background:#75b5f3;color:#07101f;text-decoration:none;font:750 11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;white-space:nowrap;box-shadow:0 12px 30px rgba(36,104,177,.28);transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.architecture .open-full:hover,.architecture .open-full:focus-visible{background:#a7d1fb;transform:translateY(-2px);box-shadow:0 16px 36px rgba(36,104,177,.38);outline:2px solid #fff;outline-offset:3px}.architecture .open-full .launch-mark{font-size:18px;line-height:1}
@media(max-width:620px){.architecture figcaption{grid-template-columns:1fr!important;gap:18px;padding:23px 22px 25px;margin-left:calc((100vw - 100%)/-2);margin-right:calc((100vw - 100%)/-2);border-left:0;border-right:0}.architecture-caption-title{font-size:24px}.architecture .open-full{width:100%;min-height:58px;padding:0 16px;white-space:normal;text-align:center}}