/* Musterstrom GmbH – Testbetrieb. Systemschrift (Inter, falls lokal installiert), kein CDN. */
:root{--ink:#11181C;--navy:#0E2A3B;--blau:#1E6FD9;--amber:#F4A024;--bg:#F7F8FA;--weiss:#FFFFFF;--linie:#E3E7EB;--r:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:1rem;line-height:1.6;color:var(--ink);background:var(--weiss)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.schmal{max-width:720px}
h1,h2,h3{font-weight:700;letter-spacing:-.02em;line-height:1.15;margin:0 0 .5em;color:var(--ink)}
h1{font-size:clamp(2.1rem,5vw,3.6rem)}
h2{font-size:clamp(1.5rem,3vw,2.1rem)}
h3{font-size:1.2rem;font-weight:600}
p{margin:0 0 1em}
a{color:var(--blau)}
.lead{font-size:1.15rem;max-width:62ch}
.kicker{color:#a35f00;font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;margin-bottom:.8em}
.sr{position:absolute;left:-9999px}
.kopf{background:var(--weiss);border-bottom:1px solid var(--linie);position:sticky;top:0;z-index:10}
.kopf-in{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.logo{font-weight:700;font-size:1.2rem;color:var(--navy);text-decoration:none;letter-spacing:-.02em}
.logo span{font-weight:500;color:var(--blau)}
nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
nav a{display:block;padding:8px 12px;border-radius:10px;color:var(--ink);text-decoration:none;font-weight:500;font-size:.95rem}
nav a:hover{background:var(--bg)}
nav a[aria-current]{color:var(--blau);background:var(--bg)}
.nav-toggle,.nav-btn{display:none}
.hero{padding:72px 0;background:var(--bg)}
.hero-klein{padding:56px 0 40px}
.hero-in{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.btn{display:inline-block;background:var(--blau);color:#fff;border:2px solid var(--blau);padding:13px 24px;border-radius:var(--r);font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
.btn:hover{background:#1859b0;border-color:#1859b0}
.btn-sec{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn-sec:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.band{background:var(--navy);color:#fff}
.band-in{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-top:32px;padding-bottom:32px}
.band strong{display:block;font-size:1.05rem}
.band span{color:#c9d6df;font-size:.95rem}
.sek{padding:88px 0}
.sek-hell{background:var(--bg)}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.mitte{align-items:center;gap:48px}
.karte{background:var(--weiss);border:1px solid var(--linie);border-radius:var(--r);padding:28px;box-shadow:0 2px 10px rgba(14,42,59,.05)}
.tag{display:inline-block;background:#fff4e0;color:#7a4c00;border-radius:8px;padding:2px 10px;font-size:.8rem;font-weight:600}
.hinweis{background:var(--bg);border-left:4px solid var(--amber);padding:14px 18px;border-radius:0 10px 10px 0;margin-top:24px}
.liste{padding-left:1.2em}
.liste li{margin-bottom:.5em}
.schritte{padding-left:1.3em}
.schritte li{margin-bottom:1em}
.prosa h2{margin-top:1.6em;font-size:1.3rem}
.klein{font-size:.9rem;color:#4a5560}
details{background:var(--weiss);border:1px solid var(--linie);border-radius:var(--r);padding:16px 20px;margin-bottom:12px}
summary{cursor:pointer;font-weight:600}
details p{margin:.8em 0 0}
.bild{margin:0}
.bild-flaeche{aspect-ratio:3/2;border-radius:var(--r);background:linear-gradient(135deg,#dfe8ef,#f1f4f7);color:var(--navy);display:flex;align-items:center;justify-content:center;border:1px solid var(--linie)}
.bild-flaeche svg{width:30%;opacity:.45}
.bild figcaption{font-size:.8rem;color:#5a6670;margin-top:6px}
.karte .bild{margin-bottom:16px}
.cta-block{background:var(--navy);color:#fff}
.cta-block h2{color:#fff}
.cta-block .btn{background:var(--amber);border-color:var(--amber);color:var(--ink)}
.cta-block .btn:hover{background:#e0911a;border-color:#e0911a}
.check{background:var(--weiss);border:1px solid var(--linie);border-radius:var(--r);padding:28px}
.check fieldset{border:0;padding:0;margin:0}
.check h2{font-size:1.3rem}
.opt{display:block;border:1px solid var(--linie);border-radius:12px;padding:14px 16px;margin-bottom:10px;cursor:pointer}
.opt:hover{background:var(--bg)}
.opt input{margin-right:10px}
.feld{display:block;font-weight:500;margin-bottom:16px}
.feld input,.feld select,.feld textarea{display:block;width:100%;margin-top:6px;padding:12px;border:1px solid #c5ccd3;border-radius:10px;font:inherit;background:#fff}
.check-nav{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.fortschritt{margin:12px 0 0;font-size:.9rem;color:#4a5560}
[hidden]{display:none !important}
.fuss{background:var(--navy);color:#dbe5ec;padding:48px 0;font-size:.95rem}
.fuss a{color:#fff}
.fuss-in{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.fuss-links{list-style:none;margin:0;padding:0}
.fuss-links li{margin-bottom:6px}
.fuss-credit,.fuss-test{grid-column:1/-1;margin:0;font-size:.85rem}
.fuss-credit{border-top:1px solid rgba(255,255,255,.15);padding-top:20px}
.fuss-test{color:#9fb2c0}
@media (max-width:820px){
  .hero-in,.grid-2,.grid-3,.band-in,.fuss-in{grid-template-columns:1fr}
  .hero{padding:48px 0}.sek{padding:56px 0}.mitte{gap:24px}
  .kopf-in{position:relative}
  .nav-btn{display:flex;flex-direction:column;gap:5px;padding:12px;cursor:pointer}
  .nav-btn span{display:block;width:24px;height:2px;background:var(--navy)}
  nav{position:absolute;left:0;right:0;top:100%;background:var(--weiss);border-bottom:1px solid var(--linie);display:none}
  nav ul{flex-direction:column;padding:8px 20px 16px}
  .nav-toggle:checked ~ nav{display:block}
  .nav-toggle{position:absolute;opacity:0;pointer-events:none;display:block}
  .nav-toggle:focus-visible + .nav-btn{outline:3px solid var(--amber)}
}
@media (min-width:821px){.wrap{padding:0 40px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}