:root{
  --bg:#f5f8fc;
  --surface:#ffffff;
  --surface-2:#eef4fb;
  --text:#17263a;
  --muted:#607089;
  --line:#dbe5f0;
  --brand:#155f9f;
  --brand-dark:#0d477a;
  --brand-soft:#e9f3fb;
  --accent:#d69b2d;
  --shadow:0 20px 55px rgba(23,59,94,.10);
  --radius:22px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(245,248,252,.90);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,229,240,.8)}
.navbar{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.01em}
.brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),#2f8cd0);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 10px 24px rgba(21,95,159,.22)}
.brand small{display:block;font-size:.72rem;color:var(--muted);font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:20px;font-weight:650;font-size:.95rem}
.nav-links a{padding:8px 2px;color:#41536b;border-bottom:2px solid transparent}
.nav-links a:hover,.nav-links a.active{color:var(--brand);border-bottom-color:var(--brand)}
.lang-switch{display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px;box-shadow:0 6px 18px rgba(25,50,80,.05)}
.lang-switch button{border:0;background:transparent;padding:7px 10px;border-radius:999px;font:inherit;font-size:.8rem;font-weight:800;color:var(--muted);cursor:pointer}
.lang-switch button.active{background:var(--brand);color:#fff}
.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px 11px;font-size:1.1rem}
.hero{padding:86px 0 64px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-160px;top:-190px;background:radial-gradient(circle,rgba(47,140,208,.15),rgba(47,140,208,0) 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:64px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:var(--brand-soft);border:1px solid #d7e9f7;border-radius:999px;color:var(--brand-dark);font-size:.83rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.hero h1{font-size:clamp(2.8rem,5.3vw,5.4rem);line-height:1.02;letter-spacing:-.055em;margin:20px 0 20px;max-width:900px}
.hero h1 span{color:var(--brand)}
.lead{font-size:clamp(1.07rem,1.7vw,1.28rem);color:var(--muted);max-width:760px;margin:0 0 30px}
.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin:26px 0 34px}
.tag{padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:.87rem;font-weight:700;color:#40536a}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:13px;font-weight:800;border:1px solid transparent;transition:.2s ease;cursor:pointer}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 30px rgba(21,95,159,.20)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
.btn-secondary:hover{border-color:#b9ccde;transform:translateY(-1px)}
.portrait-card{position:relative;max-width:430px;margin-left:auto;background:linear-gradient(145deg,#fff,#eaf3fb);border:1px solid #dce8f3;border-radius:34px;padding:24px;box-shadow:var(--shadow)}
.portrait-card:after{content:"";position:absolute;inset:auto 18px 18px auto;width:105px;height:105px;background:url('ai-visual.png') center/cover;border-radius:22px;opacity:.24;filter:saturate(.4)}
.portrait{border-radius:24px;aspect-ratio:4/5;object-fit:cover;object-position:center 18%;width:100%}
.portrait-label{padding:16px 4px 2px;font-size:.95rem;color:var(--muted)}
.portrait-label strong{display:block;color:var(--text);font-size:1.1rem}
.stats{padding:0 0 72px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 8px 22px rgba(23,59,94,.05)}
.stat strong{font-size:2rem;letter-spacing:-.04em;color:var(--brand);display:block}.stat span{color:var(--muted);font-size:.9rem}
section{padding:74px 0}.section-soft{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-kicker{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;color:var(--brand);font-weight:850;margin-bottom:8px}
.section-title{font-size:clamp(2rem,3.5vw,3.3rem);line-height:1.12;letter-spacing:-.04em;margin:0 0 16px}.section-intro{color:var(--muted);max-width:760px;margin:0 0 34px;font-size:1.05rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 10px 30px rgba(23,59,94,.055)}
.card h3{margin:8px 0 10px;font-size:1.24rem}.card p{margin:0;color:var(--muted)}
.icon{width:44px;height:44px;border-radius:13px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:900}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}.panel h3{margin-top:0}
.timeline{display:grid;gap:17px}.timeline-item{display:grid;grid-template-columns:150px 1fr;gap:26px;padding:22px 0;border-bottom:1px solid var(--line)}.timeline-item:last-child{border-bottom:0}.timeline-date{font-weight:800;color:var(--brand)}.timeline-role{font-weight:850;font-size:1.08rem}.timeline-company{color:var(--muted);font-weight:650;margin:3px 0 8px}.timeline-item p{margin:0;color:var(--muted)}
.project-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.project{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative;overflow:hidden}.project:after{content:"";position:absolute;width:90px;height:90px;border-radius:50%;background:var(--brand-soft);right:-28px;top:-26px}.project h3{margin:0 0 10px}.project p{color:var(--muted);margin:0}.project .meta{color:var(--brand);font-size:.8rem;font-weight:850;letter-spacing:.07em;text-transform:uppercase;margin-bottom:8px}
.quote{font-size:1.45rem;line-height:1.5;letter-spacing:-.02em;padding:32px;border-left:4px solid var(--brand);background:#fff;border-radius:0 20px 20px 0;margin:0}.quote small{display:block;font-size:.9rem;color:var(--muted);margin-top:16px}
.page-hero{padding:70px 0 38px}.page-hero h1{font-size:clamp(2.5rem,5vw,4.4rem);letter-spacing:-.05em;line-height:1.05;margin:14px 0}.page-hero p{font-size:1.12rem;color:var(--muted);max-width:800px}
.skill-list{display:flex;flex-wrap:wrap;gap:10px}.skill-list span{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 13px;font-weight:700;color:#40536a}
.contact-card{background:linear-gradient(135deg,#0e4a7f,#176fae);color:#fff;border-radius:30px;padding:42px;display:grid;grid-template-columns:1.35fr .65fr;gap:30px;align-items:center;box-shadow:var(--shadow)}.contact-card h2{font-size:2.4rem;line-height:1.1;margin:0 0 12px}.contact-card p{margin:0;color:#dfeefa}.contact-card .btn-secondary{justify-self:end}
.site-footer{padding:34px 0 48px;color:var(--muted);font-size:.9rem}.footer-row{display:flex;justify-content:space-between;gap:20px;align-items:center;border-top:1px solid var(--line);padding-top:26px}.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.lang-en{display:none}body.en .lang-de{display:none!important}body.en .lang-en{display:initial}.block.lang-en{display:none}body.en .block.lang-en{display:block}body.en .block.lang-de{display:none}
@media(max-width:900px){.nav-links{position:absolute;left:20px;right:20px;top:70px;display:none;flex-direction:column;align-items:stretch;background:#fff;padding:16px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-btn{display:block}.navbar>.lang-switch{margin-left:auto}.hero-grid,.split,.contact-card{grid-template-columns:1fr}.portrait-card{margin:20px auto 0}.stats-grid{grid-template-columns:repeat(2,1fr)}.cards{grid-template-columns:1fr}.project-grid{grid-template-columns:1fr}.timeline-item{grid-template-columns:1fr;gap:5px}.contact-card .btn-secondary{justify-self:start}}
@media(max-width:560px){.container{width:min(100% - 26px,var(--max))}.hero{padding-top:54px}.stats-grid{grid-template-columns:1fr 1fr}.stat{padding:17px}.stat strong{font-size:1.6rem}.contact-card{padding:28px}.footer-row{flex-direction:column;align-items:flex-start}.hero h1{font-size:2.7rem}.page-hero h1{font-size:2.6rem}}