/* Clartext – Komplettseite (modern, formal, DSGVO-freundlich) */
:root{
  --bg:#0a0d12;
  --panel:#0f141b;
  --ink:#e7edf3;
  --muted:#a9b4c0;
  --line:#1c2533;
  --accent:#2b8fff;
  --accent-ink:#08192c;
  --r:16px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --max:1160px;
}
@media (prefers-color-scheme: light){
  :root{--bg:#f7fafc;--panel:#ffffff;--ink:#0f1420;--muted:#5a6672;--line:#e5edf5;--shadow:0 12px 28px rgba(15,20,32,.08)}
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Manrope,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
  color:var(--ink);
  background:
    radial-gradient(900px 600px at 10% -10%, rgba(43,143,255,.12), transparent 65%),
    radial-gradient(700px 500px at 95% -5%, rgba(43,143,255,.10), transparent 60%),
    var(--bg);
  line-height:1.6;
}

.wrap{width:min(100% - 2rem,var(--max));margin-inline:auto}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;
  padding:.6rem 1rem;border-radius:10px}
.skip:focus{left:1rem;top:1rem;z-index:1000}

.hdr{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(160%) blur(10px);
  background:color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom:1px solid var(--line);
}
.hdr[data-scrolled="true"]{background:color-mix(in srgb, var(--bg) 85%, transparent)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;padding:.7rem 0}
.brand{display:inline-flex;gap:.6rem;align-items:center;color:var(--ink);text-decoration:none;font-weight:800}
.brand img{width:36px;height:36px;border-radius:10px;box-shadow:var(--shadow)}

.nav ul{display:flex;gap:.3rem;margin:0;padding:0;list-style:none}
.nav a{display:inline-block;padding:.6rem .9rem;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:700}
.nav a:hover{background:color-mix(in srgb, var(--ink) 8%, transparent)}
.nav a.active{background:var(--accent);color:var(--accent-ink)}
.burger{display:none;background:none;border:0;padding:.4rem;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0}

@media (max-width:860px){
  .burger{display:block}
  .nav{position:fixed;inset:58px 0 auto 0;background:var(--panel);border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:transform .2s ease}
  .nav.open{transform:translateY(0)}
  .nav ul{flex-direction:column;align-items:stretch}
  .nav a{padding:1rem}
}

/* Hero */
.hero{padding:clamp(3rem,6vw,6rem) 0}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(2rem,3vw,3rem);align-items:center}
.hero h1{margin:0 0 .7rem;font-size:clamp(2rem,3.4vw + .6rem,3.4rem);letter-spacing:-.02em;line-height:1.1}
.lead{font-size:clamp(1.05rem,1.1vw + .7rem,1.25rem);color:var(--muted)}
.cta{display:flex;gap:.7rem;flex-wrap:wrap;margin:1rem 0 1.2rem}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.1rem;border-radius:12px;
  border:1px solid var(--line);text-decoration:none;font-weight:800;letter-spacing:.2px;cursor:pointer}
.btn.primary{background:var(--accent);color:var(--accent-ink)}
.btn.ghost{background:transparent;color:var(--ink)}

.chips{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0 0;padding:0;list-style:none}
.chips li{padding:.4rem .65rem;border:1px solid var(--line);border-radius:999px;color:var(--muted);
  background:color-mix(in srgb, var(--panel) 80%, transparent)}

.visual{display:grid;place-items:center}
.glass{width:min(440px,85vw);aspect-ratio:4/3;border-radius:var(--r);background:linear-gradient(180deg, color-mix(in srgb, var(--panel) 80%, transparent), var(--panel));
  border:1px solid var(--line);box-shadow:var(--shadow);display:grid;place-items:center;padding:2rem;position:relative}
.glass img{width:72%;filter:drop-shadow(0 20px 24px rgba(0,0,0,.25))}
.tag{position:absolute;bottom:10px;right:14px;font-size:.9rem;color:var(--muted)}

.sec{padding:clamp(3rem,6vw,5.5rem) 0}
.two{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,3vw,2.2rem);align-items:start}
.note{border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:1rem 1.1rem;box-shadow:var(--shadow);position:sticky;top:86px}
.note .formula{font-weight:800;font-size:1.1rem}
.note .k{color:var(--accent)}
.meta{list-style:none;margin:.6rem 0 0;padding:0}
.meta li{display:grid;grid-template-columns:110px 1fr;gap:.6rem;padding:.4rem 0;border-top:1px dashed var(--line)}
.meta li span{color:var(--muted)}
.grid-feat{display:grid;gap:1rem;margin-top:1.2rem}
.feat{display:grid;grid-template-columns:44px 1fr;gap:.9rem;align-items:start}
.ico{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;
  background:color-mix(in srgb, var(--accent) 14%, var(--panel));font-weight:900}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.card{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:1rem;min-height:140px;box-shadow:var(--shadow)}
.card h3{margin:.2rem 0 .3rem}
.check{margin:.4rem 0 0 1rem}
.check li{margin:.25rem 0}

.contact .field{margin-bottom:1rem}
label{display:block;font-weight:700;margin-bottom:.4rem}
input,textarea{
  width:100%;padding:.9rem 1rem;border-radius:12px;border:1px solid var(--line);
  background:color-mix(in srgb, var(--panel) 60%, transparent);color:var(--ink);
  outline:none
}
input:focus, textarea:focus{border-color:color-mix(in srgb, var(--accent) 40%, var(--line))}
.err{color:#ff9b9b;min-height:1.1rem;display:block}
.consent{display:flex;gap:.6rem;align-items:flex-start;margin:.6rem 0 1rem}
.consent input{width:auto;accent-color:var(--accent)}
.privacy-note{color:var(--muted);font-size:.95rem;margin-top:1rem}

.ftr{border-top:1px solid var(--line);padding:1rem 0;background:color-mix(in srgb, var(--panel) 50%, transparent);color:var(--muted)}
.ftr .wrap{display:flex;gap:.8rem;align-items:center;justify-content:space-between;flex-wrap:wrap}
.ftr a{color:inherit;text-decoration:none;padding:.2rem .4rem;border-radius:6px}
.ftr a:hover{background:color-mix(in srgb, var(--ink) 8%, transparent)}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .two{grid-template-columns:1fr}
  .note{position:static}
  .cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:620px){
  .cards{grid-template-columns:1fr}
}