/* Con4Tech GmbH – Webseite. Nur Systemschriften, keine externen Quellen. */
:root {
  --grund: #f6f7f9;
  --flaeche: #ffffff;
  --tinte: #18212b;
  --leise: #586472;
  --linie: #dfe3e8;
  --akzent: #1b2f4b;
  --akzent-text: #ffffff;
  --link: #2a5a96;
  --schrift: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --grund: #11171d; --flaeche: #18212b; --tinte: #e8ecf0; --leise: #9aa6b2; --linie: #2a3542;
    --akzent: #d6e2f2; --akzent-text: #11171d; --link: #8fb7e8; color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--grund); color: var(--tinte);
  font-family: var(--schrift); font-size: 17px; line-height: 1.6;
}
a { color: var(--link); }
a:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
img { max-width: 100%; height: auto; }

.rahmen { max-width: 960px; margin: 0 auto; padding-inline: 20px; }

.kopf { border-bottom: 1px solid var(--linie); background: var(--flaeche); }
.kopf .rahmen { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 12px; padding-block: 12px; }
.marke { display: flex; align-items: center; gap: 10px; color: var(--tinte); text-decoration: none; font-weight: 700; font-size: 1.1rem; }
.marke img { width: 32px; height: 32px; }
.kopf nav { margin-left: auto; display: flex; gap: 18px; font-size: 0.95rem; }
.kopf nav a { color: var(--leise); text-decoration: none; }
.kopf nav a:hover { color: var(--tinte); }

.start { padding-block: 64px 24px; }
.start h1 { font-size: clamp(2rem, 5vw, 2.9rem); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; text-wrap: balance; }
.start p { font-size: 1.2rem; color: var(--leise); margin: 0; max-width: 46ch; }

section { padding-block: 28px; }
h2 { font-size: 1.5rem; margin: 0 0 16px; letter-spacing: -0.01em; }

.produkt {
  display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: start;
  background: var(--flaeche); border: 1px solid var(--linie); border-radius: 18px; padding: 24px;
}
.produkt img { width: 72px; height: 72px; border-radius: 22.37%; }
.produkt h3 { margin: 0 0 6px; font-size: 1.2rem; }
.produkt p { margin: 0 0 12px; color: var(--leise); }
.knopf {
  display: inline-block; padding: 10px 18px; border-radius: 10px; background: var(--akzent);
  color: var(--akzent-text); text-decoration: none; font-weight: 600;
}

.kontakt { display: grid; gap: 4px 32px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.kontakt p { margin: 0 0 12px; }

.text { max-width: 72ch; padding-block: 40px 56px; }
.text h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 8px; }
.text h2 { font-size: 1.2rem; margin: 32px 0 8px; }

.fuss { border-top: 1px solid var(--linie); padding-block: 24px 40px; font-size: 0.9rem; color: var(--leise); margin-top: 32px; }
.fuss .rahmen { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.fuss a { color: var(--leise); }

@media (max-width: 640px) {
  .start { padding-block: 40px 12px; }
  .produkt { grid-template-columns: 1fr; }
  .kontakt { grid-template-columns: 1fr; }
}

.produkte { display: grid; gap: 16px; }
.kachel {
  display: grid; place-items: center; width: 72px; height: 72px; border-radius: 22.37%;
  color: #fff; font-weight: 700; font-size: 1.5rem; letter-spacing: 0.02em;
}
.kachel-rider { background: #1f2a33; }
.kachel-vault { background: #4b3a7a; }
.knoepfe { display: flex; flex-wrap: wrap; gap: 10px; }
.knopf.zweit { background: transparent; color: var(--link); border: 1px solid var(--linie); }
.produkt:has(.qr) { grid-template-columns: auto 1fr auto; }
.qr { margin: 0; text-align: center; }
.qr img { display: block; width: 112px; height: 112px; border-radius: 6px; }
.qr figcaption { margin-top: 6px; font-size: 0.8rem; color: var(--leise); }
@media (max-width: 640px) {
  .produkt:has(.qr) { grid-template-columns: 1fr; }
  .qr { display: none; }
}