:root{
  --brand:#1F4B99;
  --accent:#12B886;
  --ink:#0f2240;
  --muted:#4a5a73;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --line:#E5EBF3;

  --font: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Helvetica Neue, Arial, sans-serif;

  --radius: 14px;
  --shadow: 0 6px 24px rgba(15,34,64,.08);

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 3rem;
  --space-9: clamp(3rem, 6vw, 5rem);

  --container: min(1120px, 92vw);
  --header-h: 64px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;height:auto}

/* Screenreader-only */
.sr-only{
  position:absolute !important;
  width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0
}

/* Skip Link */
.skip-link{
  position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{
  position:fixed;left:1rem;top:1rem;width:auto;height:auto;z-index:10000;
  background:var(--ink);color:#fff;padding:.6rem .9rem;border-radius:.5rem;outline:3px solid var(--accent);
}

/* Header */
.site-header{
  position:sticky;top:0;z-index:999;background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.container{width:var(--container);margin-inline:auto;padding-inline:var(--space-4)}
.header-grid{
  display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);min-height:var(--header-h);
}
.brand{
  display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);font-weight:700;
}
.logo-dot{width:14px;height:14px;border-radius:50%;background:var(--brand);display:inline-block}
.brand-text{letter-spacing:.2px}
.main-nav ul{display:flex;align-items:center;gap:clamp(.5rem,2vw,1rem);list-style:none;margin:0;padding:0}
.main-nav a{color:var(--ink);text-decoration:none;padding:.4rem .5rem;border-radius:.4rem}
.main-nav a:focus,.main-nav a:hover{outline:2px solid var(--accent);outline-offset:2px}
.cta-links .button{margin-left:.25rem}

/* Hamburger toggle */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;border-radius:.6rem;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);
  cursor:pointer;transition:background .2s ease, transform .1s ease;
  -webkit-tap-highlight-color:transparent;
}
.nav-toggle:hover{background:rgba(31,75,153,.05)}
.nav-toggle:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.nav-toggle .bars,
.nav-toggle .bars::before,
.nav-toggle .bars::after{
  display:block;background:var(--ink);height:2.5px;width:22px;border-radius:2px;
  position:relative;transition:transform .3s cubic-bezier(.4,0,.2,1), opacity .25s ease, background .25s ease
}
.nav-toggle .bars::before,
.nav-toggle .bars::after{content:"";position:absolute;left:0}
.nav-toggle .bars::before{top:-7px}
.nav-toggle .bars::after{top:7px}
.nav-toggle[aria-expanded="true"] .bars{background:transparent}
.nav-toggle[aria-expanded="true"] .bars::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars::after{transform:translateY(-7px) rotate(-45deg)}

/* Buttons */
.button{
  --bg: var(--card);
  display:inline-flex;align-items:center;gap:.5rem;border:1px solid var(--line);
  padding:.6rem .9rem;border-radius:.6rem;box-shadow:var(--shadow);text-decoration:none;
  color:var(--ink);font-weight:600;
}
.button.solid{background:var(--brand);color:#fff;border-color:transparent}
.button.ghost{background:var(--card);color:var(--ink)}
.button[data-variant="wa"]{background:var(--accent);border-color:transparent;color:#001b10}
.button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.button:hover{transform:translateY(-1px)}
.button:active{transform:none}

/* Hero */
.hero{padding-block:var(--space-9) var(--space-8);background:
  radial-gradient(1000px 400px at 10% 0%, rgba(31,75,153,.08), transparent 65%),
  radial-gradient(800px 300px at 90% 10%, rgba(18,184,134,.08), transparent 60%)}
.hero h1{font-size:clamp(1.8rem,4.5vw,3rem);line-height:1.15;margin:0 0 var(--space-4)}
.subline{font-size:clamp(1rem,1.6vw,1.15rem);color:var(--muted);max-width:70ch;margin:0 0 var(--space-6)}
.hero-actions{display:flex;gap:.75rem;flex-wrap:wrap}
.trust{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem 1rem;margin:var(--space-6) 0 0;padding:0;list-style:none;color:var(--ink)}
.trust li{background:var(--card);border:1px solid var(--line);padding:.5rem .75rem;border-radius:.5rem}

/* Sections */
.section{padding-block:var(--space-8)}
.section.alt{background:#fff}
.section h2{font-size:clamp(1.4rem,3vw,2rem);margin:0 0 var(--space-5)}
.grid.cards{
  display:grid;gap:var(--space-4);
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
.grid.cards.two-up{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:var(--space-5);box-shadow:var(--shadow);
}
.card h3{margin-top:0;margin-bottom:.25rem;font-size:1.05rem}
.card.big h2{margin:.25rem 0 .25rem}
.features{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:var(--space-5);box-shadow:var(--shadow)}
.steps{display:grid;gap:var(--space-4);counter-reset:step;padding-left:1rem}
.steps li{position:relative;padding-left:2.25rem}
.steps li::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:.15rem;width:1.6rem;height:1.6rem;border-radius:.4rem;
  background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;
}

/* CTA band */
.cta-band{
  background:linear-gradient(90deg,var(--brand), #163a77);
  color:#fff;text-align:center;padding-block:var(--space-7);
}
.cta-band h2{margin:0 0 var(--space-4);font-size:clamp(1.25rem,2.6vw,1.65rem)}

/* Forms */
.form-grid{
  display:grid;gap:var(--space-4);
  grid-template-columns:repeat(12,1fr);
}
.field{grid-column:span 6}
.field-span{grid-column:span 12}
.field.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
label{display:block;font-weight:600;margin-bottom:.35rem}
input,textarea{
  width:100%;padding:.7rem .8rem;border:1px solid var(--line);border-radius:.5rem;background:#fff;
  font:inherit;color:inherit;
}
input:focus,textarea:focus{outline:3px solid var(--accent);outline-offset:1px}
.check{grid-column:span 12;display:flex;gap:.6rem;align-items:flex-start}
.check input{width:1.1rem;height:1.1rem;margin-top:.25rem}
.actions{grid-column:span 12;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.status{min-height:1.5rem;color:var(--muted)}

@media (max-width:720px){
  .field{grid-column:span 12}
  .hero{padding-block:var(--space-7) var(--space-6)}
  .hero h1{font-size:clamp(1.6rem,6vw,2.2rem)}
  .subline{font-size:clamp(.95rem,3vw,1.1rem)}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .button{width:100%;justify-content:center;min-height:48px}
  .trust{grid-template-columns:1fr;gap:.5rem}
  .button{min-height:44px;padding:.75rem 1rem;font-size:1rem}
  .section{padding-block:var(--space-6)}
  .footer-grid{grid-template-columns:1fr;gap:var(--space-5)}
}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:#fff}
.footer-grid{
  display:grid;gap:var(--space-6);grid-template-columns:2fr 1fr 1fr;padding-block:var(--space-7)
}
.footer-grid h3{margin:0 0 .5rem}
.footer-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:.35rem}
.footer-meta{padding-block:var(--space-4);border-top:1px solid var(--line);text-align:center}

/* Text helpers */
.muted{color:var(--muted)}
.backlink{margin-top:var(--space-6)}
.qa.box{
  border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:var(--space-5);box-shadow:var(--shadow)
}

/* Reveal basics */
[data-reveal]{opacity:0;transform:translateY(10px);transition:opacity .5s ease, transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none;transition:none}
  .button:hover,.button:active{transform:none}
}

/* KBD */
kbd{font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  background:#eef2f7;border:1px solid var(--line);border-bottom-width:2px;border-radius:.35rem;padding:.05rem .35rem}

/* Focus outlines globally */
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* ===== Mobile Navigation ===== */
@media (max-width: 960px){
  .nav-toggle{
    display:inline-flex;
    cursor:pointer;
    -webkit-tap-highlight-color:transparent;
  }
  .nav-toggle:active{transform:scale(.95)}
  
  /* Overlay für mobile Navigation */
  .nav-overlay{
    position:fixed;inset:0;background:rgba(15,34,64,.6);
    backdrop-filter:blur(2px);z-index:998;opacity:0;visibility:hidden;
    transition:opacity .3s ease, visibility 0s linear .3s;
  }
  .nav-overlay.is-visible{
    opacity:1;visibility:visible;transition:opacity .3s ease;
  }
  
  .main-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    background:#fff;border-bottom:1px solid var(--line);
    transform:translateY(-110%);opacity:0;visibility:hidden;
    transition:transform .3s cubic-bezier(.4,0,.2,1), opacity .3s ease, visibility 0s linear .3s;
    box-shadow:0 12px 30px rgba(15,34,64,.12);
    z-index:999;max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .main-nav.is-open{
    transform:translateY(0);opacity:1;visibility:visible;
    transition:transform .3s cubic-bezier(.4,0,.2,1), opacity .3s ease;
  }
  .main-nav ul{
    flex-direction:column;align-items:stretch;gap:.5rem;padding:var(--space-4);
    margin:0;
  }
  .main-nav a{
    padding:1rem 1.25rem;border-radius:.6rem;
    display:flex;align-items:center;font-weight:500;transition:background .2s ease;
    min-height:44px;
  }
  .main-nav a:hover,.main-nav a:focus{background:rgba(31,75,153,.08)}
  .main-nav li:last-child{margin-top:.5rem;padding-top:.5rem;border-top:1px solid var(--line)}
  .cta-links{display:flex;flex-direction:column;gap:.75rem}
  .cta-links .button{width:100%;justify-content:center;min-height:48px;padding:.85rem 1rem}
  body.no-scroll{overflow:hidden;position:fixed;width:100%}
}