/* Koop Technical Data, gemeinsames Gestaltungssystem fuer alle Seiten */
@font-face { font-family: "Inter"; src: url("fonts/inter-var.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/sourceserif4-latin.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }

:root {
  --bg: #F6F5F1; --flaeche: #FBFAF7; --flaeche-2: #EFEDE7; --ink: #20303A; --ink-2: #3E4B54; --muted: #5C6B73;
  --line: #E3E1DA; --accent: #20303A; --accent-hell: #ECE9E2; --rot: #A86A5E; --gruen: #20303A; --dunkel: #20303A;
  --radius: 14px; --radius-s: 8px; --breite: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--breite); margin: 0 auto; padding: 0 28px; }

h1, h2, h3 { font-family: "Source Serif 4", Georgia, "Times New Roman", serif; font-weight: 600; letter-spacing: -0.01em; line-height: 1.15; margin: 0; color: var(--ink); }
h1 { font-size: clamp(2.1rem, 4.2vw, 3.3rem); }
h2 { font-size: clamp(1.6rem, 2.8vw, 2.3rem); margin-bottom: 14px; }
h3 { font-size: 1.2rem; margin-bottom: 8px; }
p { margin: 0 0 14px; }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 54ch; }
.klein { font-size: 0.86rem; color: var(--muted); }

/* Kopfzeile */
.kopf { position: sticky; top: 0; z-index: 50; background: rgba(246, 245, 241, 0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.kopf .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 20px; }
.kopf .knopf { padding: 8px 16px; font-size: 0.92rem; }
.marke { white-space: nowrap; font-weight: 650; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; font-size: 1.05rem; }
.marke span { font-weight: 400; color: var(--muted); }
.nav { display: flex; gap: 26px; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: 0.95rem; }
.nav a.aktiv { color: var(--ink); font-weight: 550; }
.kopf-rechts { display: flex; align-items: center; gap: 18px; }
.kopf-rechts .tel { color: var(--ink-2); text-decoration: none; font-size: 0.95rem; }

/* Knoepfe */
.knopf { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 10px; font-weight: 550; font-size: 0.97rem;
  text-decoration: none; border: 1px solid transparent; transition: background .15s, border-color .15s; }
.knopf.primaer { background: #DED5C3; color: var(--ink); border-color: #C4B9A5; }
.knopf.primaer:hover { background: #D4C9B4; border-color: #B8AC96; }
.knopf.sekundaer { background: transparent; color: var(--ink); border-color: #D8D2C6; }
.knopf.sekundaer:hover { border-color: #CFCBC1; }
.knopf.hell { background: #fff; color: var(--ink); }
.knopf.rand-hell { color: #fff; border-color: rgba(255,255,255,.35); }
.knoepfe { display: flex; gap: 12px; flex-wrap: wrap; }

/* Abschnitte */
section { padding: 88px 0; }
.abschnitt-kopf { max-width: 680px; margin-bottom: 40px; }
.flaeche-2 { background: var(--flaeche-2); }
.karte { background: var(--flaeche); border: 1px solid var(--line); border-radius: var(--radius); }

/* Fusszeile */
.fuss { background: var(--flaeche-2); color: var(--ink-2); padding: 64px 0 40px; font-size: 0.92rem; border-top: 1px solid var(--line); }
.fuss-raster { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.fuss h4 { color: var(--ink); font-size: 0.95rem; font-weight: 550; margin: 0 0 12px; font-family: inherit; }
.fuss a { color: var(--ink-2); text-decoration: none; display: block; margin-bottom: 6px; }
.fuss a:hover { color: var(--ink); }
.fuss .unten { border-top: 1px solid var(--line); margin-top: 44px; padding-top: 20px; color: var(--muted); font-size: 0.84rem; }

@media (max-width: 860px) {
  .kopf .wrap { flex-wrap: wrap; height: auto; padding-top: 12px; padding-bottom: 10px; row-gap: 8px; }
  .nav { order: 3; width: 100%; gap: 20px; font-size: 0.92rem; }
  .kopf-rechts .tel { display: none; }
  section { padding: 64px 0; }
  .fuss-raster { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 18px; }
  .kopf .knopf { padding: 8px 12px; font-size: 0.86rem; white-space: nowrap; }
  .knoepfe .knopf { width: 100%; }
  .fuss-raster { grid-template-columns: 1fr; }
}