:root {
    color-scheme: light;
  --grund: #ffffff;
  --schrift: #14181d;
  --leise: #4a5560;
  --rand: #c8d0d8;
  --betont: #0b5cab;
  --fokus: #0b5cab;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 3rem 1rem 2rem;
  background: var(--grund);
  color: var(--schrift);
    font: 19px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  max-width: 34rem;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1; }

h1 {
  font-size: 2.1rem;
  line-height: 1.2;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.zweck {
  font-size: 1.15rem;
  margin: 0 0 2rem;
}

.bauen {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
  padding-left: 1rem;
  border-left: 4px solid var(--betont);
}

.bescheid {
  margin: 0 0 2.5rem;
}

a {
  color: var(--betont);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:where(.bescheid a, footer a) {
  display: inline-block;
  min-height: 48px;
  line-height: 48px;
}

:focus-visible {
  outline: 3px solid var(--fokus);
  outline-offset: 2px;
}

.sicherheit {
  font-size: 0.95rem;
  color: var(--leise);
  border-top: 1px solid var(--rand);
  padding-top: 1.25rem;
  margin: 0;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rand);
  font-size: 0.95rem;
  color: var(--leise);
}

.absender { margin: 0 0 1rem; }

.logo {
  display: block;
  width: 120px;
  height: auto;
  margin: 0 0 1rem;
}

footer nav a { margin-right: 1.5rem; }

@media (max-width: 30rem) {
  body { padding-top: 2rem; }
  h1 { font-size: 1.8rem; }
}