@font-face{font-family:"Inter";src:url("fonts/inter.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Source Serif";src:url("fonts/sourceserif.woff2") format("woff2");font-weight:200 900;font-display:swap}
:root{
  --ink:#0f1d2e;--muted:#5b6b7e;--navy:#0b2540;--navy-2:#123a5e;--org:#1f4e86;
  --green:#2e7d32;--green-soft:#e8f3e9;--sand:#f6f3ec;--paper:#fbfaf7;--line:#e3ded2;--white:#fff;
  --serif:"Source Serif",Georgia,serif;--sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --max:1120px;--r:14px;--shadow:0 1px 2px rgba(15,29,46,.06),0 8px 24px rgba(15,29,46,.07)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.65 var(--sans)}
img{max-width:100%;display:block}
a{color:var(--org);text-underline-offset:3px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0;color:var(--navy)}
h2{font-size:clamp(1.7rem,3vw,2.3rem);margin-bottom:18px}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:72px 0;scroll-margin-top:64px}
.alt{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{display:block;font:600 .76rem/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--green);margin-bottom:12px}
.lead{color:var(--muted);font-size:1.08rem;max-width:760px}

/* header */
.bar{position:sticky;top:0;z-index:20;background:rgba(251,250,247,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}
.brand{font:600 1.05rem var(--serif);color:var(--navy);text-decoration:none;white-space:nowrap}
.brand small{display:block;font:500 .72rem var(--sans);color:var(--green);letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;gap:18px;align-items:center;font-size:.92rem}
.nav a{color:var(--ink);text-decoration:none}
.nav a:hover{color:var(--org)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang button{border:0;background:none;padding:5px 11px;font:600 .78rem var(--sans);cursor:pointer;color:var(--muted)}
.lang button[aria-pressed="true"]{background:var(--navy);color:#fff}
@media (max-width:780px){.nav a.opt{display:none}}

/* hero */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 62%,#1d5a3a 100%);color:#fff;padding:64px 0 60px}
.hero .wrap{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.hero h1{color:#fff;font-size:clamp(2rem,4.4vw,3.1rem)}
.hero .name{font:600 .82rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:#a5d6a7;margin-bottom:14px}
.hero .sub{font-size:1.12rem;color:#dbe6f2;max-width:640px;margin:18px 0 26px}
.hero img.portrait{width:220px;height:270px;object-fit:cover;border-radius:16px;border:3px solid rgba(255,255,255,.18)}
.contact-line{font-size:.9rem;color:#c9d6e4;margin-top:20px}
.contact-line a{color:#fff;text-decoration:none}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;padding:11px 20px;border-radius:999px;font-weight:600;font-size:.95rem;text-decoration:none;border:1.5px solid transparent}
.btn.primary{background:var(--green);color:#fff}
.btn.primary:hover{background:#256b29;color:#fff}
.btn.ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn.outline{border-color:var(--org);color:var(--org)}
@media (max-width:760px){.hero .wrap{grid-template-columns:1fr}.hero img.portrait{width:150px;height:185px;order:-1}}

/* figures */
.figs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.fig{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.fig b{display:block;font:600 2rem/1.1 var(--serif);color:var(--green);margin-bottom:6px}
.fig span{font-size:.9rem;color:var(--muted)}
@media (max-width:860px){.figs{grid-template-columns:1fr 1fr}}

/* two columns */
.cols{display:grid;grid-template-columns:1.35fr 1fr;gap:44px;align-items:start}
@media (max-width:860px){.cols{grid-template-columns:1fr;gap:28px}}
.box{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.box h3{margin-bottom:12px}
.ticks{list-style:none;margin:0;padding:0}
.ticks li{padding:7px 0 7px 26px;position:relative;border-bottom:1px solid var(--line)}
.ticks li:last-child{border-bottom:0}
.ticks li::before{content:"";position:absolute;left:4px;top:15px;width:9px;height:9px;border-radius:50%;background:var(--green)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.cards{grid-template-columns:1fr}}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.card img{width:100%;height:180px;object-fit:cover}
.card .ph{height:180px;background:linear-gradient(135deg,var(--navy-2),#1d5a3a);display:flex;align-items:flex-end;padding:16px;color:#cfe6d1;font:600 .78rem var(--sans);letter-spacing:.12em;text-transform:uppercase}
.card .in{padding:18px 20px 20px}
.card .tag{font:600 .72rem var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--org);margin-bottom:6px;display:block}
.card p{font-size:.94rem;color:var(--ink);margin:8px 0 0}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.chips span{background:var(--green-soft);color:#1f5d24;border-radius:999px;padding:5px 12px;font-size:.88rem}

/* research */
.qs{counter-reset:q;display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:760px){.qs{grid-template-columns:1fr}}
.q{background:var(--white);border:1px solid var(--line);border-left:4px solid var(--green);border-radius:10px;padding:18px 20px}
.q h3{font-size:1.02rem;font-family:var(--sans);font-weight:700;margin-bottom:6px}
.q p{margin:0;font-size:.95rem;color:var(--muted)}
.topic{font:600 1.25rem/1.35 var(--serif);color:var(--navy);border-left:4px solid var(--green);padding:6px 0 6px 18px;margin:8px 0 14px}
.note{font-size:.9rem;color:var(--muted)}
.outputs{margin:0;padding-left:20px}
.outputs li{margin-bottom:8px}

/* referees */
.refs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:900px){.refs{grid-template-columns:1fr 1fr}}
.ref{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.ref h3{font-size:1rem;font-family:var(--sans);font-weight:700}
.ref p{margin:4px 0 0;font-size:.9rem;color:var(--muted)}
.ref .org{color:var(--org)}
.ref .rel{display:block;margin-top:8px;color:var(--green);font-weight:600;font-size:.86rem}

/* contact + footer */
.cta{background:linear-gradient(120deg,var(--navy),#1d5a3a);color:#fff;text-align:center}
.cta h2{color:#fff}
.cta p{color:#dbe6f2}
.cta .btns{justify-content:center}
footer{padding:28px 0;font-size:.86rem;color:var(--muted);border-top:1px solid var(--line)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:var(--muted)}

/* bilingual */
html[lang="en"] [lang="de"]:not(html){display:none!important}
html[lang="de"] [lang="en"]:not(html){display:none!important}
@media (max-width:520px){.bar .wrap{gap:8px}.brand{font-size:.95rem}.nav{gap:10px}.lang~*,.nav a.main{font-size:.85rem}}
@media (max-width:420px){.lang .x{display:none}.nav:has(.lang) a.main{display:none}}
.fig span{display:block;line-height:1.45}
@media (max-width:600px){.fig{padding:16px}.fig b{font-size:1.55rem}}