:root{--ink:#111312;--paper:#f6f4ef;--sage:#597f72;--stone:#d9d6cf;--muted:#666a67;--line:rgba(17,19,18,.16)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif;font-size:16px;line-height:1.65}.skip{position:absolute;left:-9999px;top:0}.skip:focus{left:1rem;top:1rem;z-index:20;background:#fff;color:#000;padding:.75rem 1rem}.site-header{height:88px;padding:0 clamp(1.25rem,5vw,5.5rem);display:flex;align-items:center;justify-content:space-between;gap:clamp(1.25rem,2.4vw,2.75rem);border-bottom:1px solid var(--line);position:relative;z-index:2}.wordmark{font-family:Georgia,"Times New Roman",serif;font-size:1.25rem;text-decoration:none;color:inherit}.site-header nav{display:flex;gap:clamp(1rem,2.5vw,2.75rem)}.site-header nav a,.secondary,footer a{color:inherit;text-decoration:none}.site-header nav a{font-size:.82rem;letter-spacing:.08em;text-transform:uppercase}.hero{min-height:calc(100vh - 88px);display:grid;grid-template-columns:minmax(0,1.12fr) minmax(320px,.88fr);gap:clamp(2rem,6vw,7rem);align-items:center;padding:clamp(4rem,9vw,8.5rem) clamp(1.25rem,5vw,5.5rem)}.eyebrow{font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;color:var(--sage);font-weight:700;margin:0 0 1.35rem}.hero h1,.section h2,.contact h2{font-family:Georgia,"Times New Roman",serif;font-weight:400;line-height:.98;letter-spacing:-.045em;margin:0}.hero h1{font-size:clamp(3.5rem,7.8vw,8rem);max-width:11ch}.hero h1 em{color:var(--sage);font-weight:400}.intro{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.15rem,1.8vw,1.55rem);line-height:1.5;max-width:37rem;color:#4f5451;margin:2.25rem 0}.hero-links{display:flex;gap:1.35rem;align-items:center;flex-wrap:wrap}.primary{background:var(--ink);color:#fff;text-decoration:none;padding:.95rem 1.35rem;border:1px solid var(--ink)}.secondary{border-bottom:1px solid var(--ink);padding:.65rem 0}.portrait{margin:0;align-self:stretch;min-height:30rem;position:relative;overflow:hidden;background:#1e2925}.portrait img{width:100%;height:100%;object-fit:cover;object-position:center}.portrait figcaption{position:absolute;left:1.25rem;bottom:1rem;color:#fff;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase}.statement{background:var(--ink);color:#f5f3ee;padding:clamp(4rem,8vw,8rem) clamp(1.25rem,12vw,13rem)}.statement p{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2rem,4.5vw,4.7rem);line-height:1.18;margin:0;max-width:23ch}.section{padding:clamp(5rem,9vw,9rem) clamp(1.25rem,5vw,5.5rem);border-bottom:1px solid var(--line)}.section-heading{display:grid;grid-template-columns:minmax(130px,.34fr) 1fr;gap:2rem;align-items:start;margin-bottom:clamp(3rem,6vw,6rem)}.section h2,.contact h2{font-size:clamp(2.6rem,5vw,5.4rem);max-width:13ch}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}.topic-grid article{padding:2rem 2rem 2rem 0;border-right:1px solid var(--line);min-height:17rem}.topic-grid article+article{padding-left:2rem}.topic-grid article:last-child{border-right:0}.topic-grid span,.book-label{font-size:.75rem;color:var(--sage);letter-spacing:.14em;text-transform:uppercase}.topic-grid h3,.book-card h3{font-family:Georgia,"Times New Roman",serif;font-size:1.65rem;font-weight:400;line-height:1.15;margin:3.5rem 0 1rem}.topic-grid p,.book-card p{color:var(--muted);margin:0}.publication-section{background:#ece9e2}.book-card{display:flex;align-items:flex-end;justify-content:space-between;text-decoration:none;color:inherit;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:2.5rem 0}.book-card h3{font-size:clamp(2.8rem,6vw,6.5rem);margin:1rem 0}.book-card>span{font-size:2.25rem}.research-link{display:inline-block;margin-top:2rem;color:inherit;text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:.35rem}.teaching{display:grid;grid-template-columns:1fr}.teaching-copy{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,7vw,8rem);margin-left:calc(34% + .7rem)}.teaching-copy>p{font-family:Georgia,"Times New Roman",serif;font-size:1.35rem;margin:0}.teaching-copy ul{margin:0;padding:0;list-style:none}.teaching-copy li{padding:.9rem 0;border-bottom:1px solid var(--line)}.contact{background:var(--sage);color:#fff;padding:clamp(5rem,9vw,9rem) clamp(1.25rem,5vw,5.5rem)}.contact .eyebrow{color:#dfe9e5}.contact h2{max-width:15ch}.contact>a{display:inline-block;color:#fff;text-decoration:none;font-size:clamp(1.25rem,2vw,1.75rem);margin-top:3rem;border-bottom:1px solid rgba(255,255,255,.65);padding-bottom:.4rem}footer{display:flex;justify-content:space-between;gap:2rem;padding:1.5rem clamp(1.25rem,5vw,5.5rem);font-size:.82rem;background:var(--ink);color:#d9ddd9}footer p{margin:0}footer div{display:flex;gap:1.5rem}@media(max-width:900px){.site-header nav{display:none}.hero{grid-template-columns:1fr;min-height:auto}.portrait{min-height:65vw;order:-1}.section-heading{grid-template-columns:1fr}.topic-grid{grid-template-columns:1fr 1fr}.topic-grid article:nth-child(2){border-right:0}.topic-grid article:nth-child(3),.topic-grid article:nth-child(4){border-top:1px solid var(--line)}.teaching-copy{margin-left:0}}@media(max-width:620px){.hero{padding-top:2rem}.hero h1{font-size:clamp(2.75rem,15vw,3.35rem)}.portrait{min-height:105vw}.topic-grid{grid-template-columns:1fr}.topic-grid article,.topic-grid article+article{padding:2rem 0;border-right:0;border-top:1px solid var(--line);min-height:auto}.teaching-copy{grid-template-columns:1fr}.book-card{align-items:center}footer{flex-direction:column}.site-header{height:72px}.hero{min-height:auto}}

/* UX assurance: narrow-layout resilience and WCAG contrast */
:root{--sage:#466b60;--muted:#5d625f}
.site-header>*,.hero>*,.section-heading>*,.topic-grid>*,.teaching-copy>*,.book-card>*{min-width:0}
h1,h2,h3,p,li,a{overflow-wrap:anywhere;hyphens:auto}
.contact .eyebrow{color:#eef5f2}.site-header nav a{min-height:2.75rem;display:inline-flex;align-items:center}.secondary,.research-link,footer a,.legal a{min-height:1.5rem;display:inline-flex;align-items:center}

/* bilingual navigation and verified publication */
.language-switch{margin-left:auto;padding-left:2rem;gap:.55rem!important;font-size:.74rem;letter-spacing:.12em}.language-switch span,.language-switch a{display:inline-flex;align-items:center;min-height:2.75rem}.language-switch span{font-weight:700;border-bottom:1px solid currentColor}.article-card{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;color:inherit;text-decoration:none;border-bottom:1px solid var(--line);padding:2.5rem 0}.article-card h3{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.8rem,3vw,3.2rem);font-weight:400;line-height:1.08;margin:.8rem 0}.article-card p{max-width:58rem;color:var(--muted);margin:0}.article-card>span{font-size:1.75rem}@media(max-width:900px){.site-header .main-nav{display:none}.site-header .language-switch{display:flex}}@media(max-width:620px){.site-header{padding-inline:1rem}.wordmark{font-size:1rem}.language-switch{padding-left:.75rem}.article-card{align-items:center}}

.teaching-proof{font-family:Inter,"Segoe UI",Arial,sans-serif!important;font-size:.95rem!important;line-height:1.65;margin-top:1.5rem!important;padding-top:1.5rem;border-top:1px solid var(--line)}

/* prominent evidence section */
.credentials{padding:clamp(4rem,7vw,7rem) clamp(1.25rem,5vw,5.5rem);background:#f6f4ef;border-bottom:1px solid var(--line)}.credentials-heading{display:grid;grid-template-columns:minmax(130px,.34fr) 1fr;gap:2rem;margin-bottom:3rem}.credentials h2{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.4rem,4.4vw,4.8rem);font-weight:400;line-height:1.02;letter-spacing:-.04em;margin:0;max-width:15ch}.credential-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink)}.credential-grid article{padding:2rem 3rem 2rem 0;min-width:0}.credential-grid article+article{padding-left:3rem;border-left:1px solid var(--line)}.credential-label{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--sage);font-weight:700}.credential-grid h3{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.7rem,2.8vw,2.7rem);font-weight:400;line-height:1.1;margin:1.25rem 0}.credential-grid p,.credential-grid li{color:var(--muted)}.credential-grid ul{list-style:none;padding:0;margin:0 0 1.5rem}.credential-grid li{padding:.55rem 0;border-bottom:1px solid var(--line)}.credential-grid a{display:inline-flex;align-items:center;min-height:2.75rem;color:inherit;text-decoration:none;border-bottom:1px solid var(--ink)}@media(max-width:900px){.credentials-heading{grid-template-columns:1fr}}@media(max-width:620px){.credential-grid{grid-template-columns:1fr}.credential-grid article,.credential-grid article+article{padding:2rem 0;border-left:0}.credential-grid article+article{border-top:1px solid var(--line)}}

/* Header collision fix: preserve spacing and simplify tablet navigation */
.site-header .main-nav{margin-left:auto}.language-switch{margin-left:0;padding-left:0}@media(max-width:1100px){.site-header .main-nav{display:none}.site-header .language-switch{display:flex;margin-left:auto;padding-left:.75rem}}@media(max-width:380px){.wordmark{font-size:.94rem}.language-switch{padding-left:.35rem;gap:.4rem!important}}

/* 2026-09-24: mobile section navigation, media & contact */
.press-note{max-width:60rem;margin:2.5rem 0 0;padding-top:1.5rem;border-top:1px solid var(--line);color:var(--muted)}.press-note a{color:inherit}
.contact-links{display:flex;flex-wrap:wrap;gap:1rem 3rem;margin:0}.contact-links a{min-height:2.75rem}
@media(max-width:1100px){.site-header{flex-wrap:wrap;height:auto;min-height:72px;row-gap:0;padding-top:.5rem}.site-header .main-nav{display:flex!important;order:3;width:100%;margin:0;overflow-x:auto;gap:1.5rem;border-top:1px solid var(--line);scrollbar-width:none;-webkit-overflow-scrolling:touch}.site-header .main-nav::-webkit-scrollbar{display:none}.site-header .main-nav a{white-space:nowrap;font-size:.72rem}}
@media(max-width:620px){.portrait{min-height:0;max-width:22rem;margin:0 auto}.hero{gap:2rem}}

/* 2026-09-24: portrait: fixed ratio, identical in DE and EN */
.portrait{aspect-ratio:4/5;height:auto;min-height:0!important;align-self:center}
.portrait img{height:100%;object-position:50% 30%}
@media(max-width:900px){.portrait{max-width:26rem;width:100%;margin:0 auto}}
/* 2026-09-24: portrait: fixed position – image and text start at the same top edge in every language */
.hero{align-items:start;min-height:0}
.portrait{align-self:start}