:root{--marine:#0B2545;--kobalt:#1E5A96;--hell:#6FA8DC;--eis:#F4F7FB;--text:#262B33;--grau:#6B7280;--rand:#D7E1EC;--ok:#2E7D5B;--warn:#C08A1E;--r:14px;--sh:0 6px 24px rgba(11,37,69,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:17px/1.6 "Source Sans 3","Segoe UI",system-ui,-apple-system,Arial,sans-serif;color:var(--text);background:#fff;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Libre Franklin","Segoe UI",system-ui,Arial,sans-serif;color:var(--marine);line-height:1.2;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800}h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800}h3{font-size:1.2rem;font-weight:700}
a{color:var(--kobalt)}p{margin:0 0 1em}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}.narrow{max-width:760px}
header.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--rand)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:"Libre Franklin",system-ui,Arial,sans-serif;font-weight:800;color:var(--marine);text-decoration:none;font-size:1.15rem;display:flex;align-items:center;gap:10px}
.logo i{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--marine),var(--kobalt));display:inline-block}
nav a{margin-left:20px;color:var(--text);text-decoration:none;font-weight:600;font-size:.95rem}nav a:hover{color:var(--kobalt)}
.btn{display:inline-block;background:var(--kobalt);color:#fff;text-decoration:none;font-weight:700;border:0;border-radius:12px;padding:14px 22px;font-size:1rem;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{background:var(--marine);transform:translateY(-1px)}.btn.ghost{background:transparent;color:var(--marine);border:2px solid var(--rand)}.btn.ghost:hover{background:var(--eis);color:var(--marine)}
.hero{background:linear-gradient(160deg,var(--marine) 0%,#12396b 100%);color:#fff;padding:84px 0 96px;position:relative;overflow:hidden}
.hero h1{color:#fff;max-width:18ch}.hero p.lead{font-size:1.2rem;max-width:56ch;color:#dbe7f5}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero .btn{background:#fff;color:var(--marine)}.hero .btn:hover{background:var(--eis)}
.hero .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(111,168,220,.35),transparent 70%)}
.badge{display:inline-block;background:rgba(255,255,255,.12);color:#dbe7f5;border-radius:999px;padding:6px 14px;font-size:.85rem;font-weight:600;margin-bottom:18px}
section.s{padding:72px 0}section.alt{background:var(--eis)}
.grid{display:grid;gap:20px}.g2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.g4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:#fff;border:1px solid var(--rand);border-radius:var(--r);padding:26px;box-shadow:var(--sh);text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
a.card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(11,37,69,.14)}
.card .ico{width:46px;height:46px;border-radius:12px;background:var(--eis);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:14px}
.card h3{margin-bottom:.4em}.card p{color:var(--grau);flex:1}.card .go{color:var(--kobalt);font-weight:700}
.steps{counter-reset:s}.step{position:relative;padding-left:56px}.step:before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;background:var(--kobalt);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
details{border:1px solid var(--rand);border-radius:12px;padding:16px 20px;margin-bottom:12px;background:#fff}summary{cursor:pointer;font-weight:700;color:var(--marine)}details p{margin:.8em 0 0;color:var(--grau)}
.about{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center}.avatar{width:96px;height:96px;border-radius:50%;background:linear-gradient(135deg,var(--marine),var(--kobalt));color:#fff;font:800 2rem "Libre Franklin",system-ui,sans-serif;display:flex;align-items:center;justify-content:center}
/* Rechner */
.crumb{font-size:.9rem;color:var(--grau);margin:28px 0 8px}.crumb a{color:var(--grau)}
.tool{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;margin:12px 0 64px}
@media(max-width:860px){.tool{grid-template-columns:1fr}.about{grid-template-columns:1fr}nav a.hide{display:none}}
.panel{background:#fff;border:1px solid var(--rand);border-radius:var(--r);padding:26px;box-shadow:var(--sh)}
label{display:block;font-weight:600;margin:14px 0 4px;color:var(--marine)}.hint{display:block;font-weight:400;color:var(--grau);font-size:.88rem;margin-top:2px}
input[type=number],input[type=text],input[type=email]{width:100%;padding:12px 14px;font-size:1rem;border:1.5px solid var(--rand);border-radius:10px;background:#fff;color:var(--text);font-family:inherit}
input:focus{outline:3px solid rgba(30,90,150,.25);border-color:var(--kobalt)}
.result{background:var(--marine);color:#fff;border-radius:var(--r);padding:26px;margin-bottom:20px}.result .big{font:800 clamp(2rem,6vw,2.8rem) "Libre Franklin",system-ui,sans-serif;color:#fff;margin:.1em 0}.result small{color:#c9d8ea}
.result.ok{background:var(--ok)}.empty{color:var(--grau);border:2px dashed var(--rand);border-radius:var(--r);padding:30px;text-align:center}
.note{font-size:.88rem;color:var(--grau);border-left:3px solid var(--hell);padding-left:12px;margin:16px 0}
.cb{display:flex;gap:10px;font-weight:400;align-items:flex-start;color:var(--text);font-size:.92rem}.cb input{margin-top:5px;width:auto}
.leadbox{border-top:1px solid var(--rand);margin-top:18px;padding-top:18px}
footer{background:var(--marine);color:#c9d8ea;padding:40px 0;font-size:.92rem}footer a{color:#fff}footer .cols{display:flex;gap:32px;flex-wrap:wrap;justify-content:space-between}
.disc{font-size:.8rem;color:#9fb4cf;margin-top:20px;line-height:1.5}
:focus-visible{outline:3px solid var(--hell);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}