:root {
  /* Gemeinsame Designbasis; Regeln und Ausbauziel: docs/Designkonzept.md. */
  --color-text: #19352d;
  --color-background: #f7f8f3;
  --color-action: #245e47;
  --color-sage: #e9eee4;
  --color-surface: white;
  --color-focus: #8b4500;
  --color-status-border: #55715a;
  --color-border: #bdcbbf;
  --color-number: #456750;
  --font-body: system-ui, sans-serif;
  --line-height-body: 1.6;
  --width-content: 70rem;
  --width-narrow: 54rem;
  --width-text: 70ch;

  color-scheme: light;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-background);
  line-height: var(--line-height-body);
}

* { box-sizing: border-box; }
body { margin: 0; }
.container { width: min(var(--width-content), 100% - 2.5rem); margin-inline: auto; }
.page-narrow { max-width: var(--width-narrow); }
header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; padding-block: 1.5rem; }
a { color: var(--color-action); text-underline-offset: 0.2em; }
a:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 5px; }
.brand { font-size: 1.25rem; font-weight: 750; }
nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.skip-link { position: absolute; top: 0.5rem; left: 1rem; padding: 0.75rem; background: var(--color-surface); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
section { padding-block: 2.5rem; scroll-margin-top: 1rem; }
.intro { padding-block: 3rem 4rem; max-width: 50rem; }
/* Nur der Startseiten-Einstieg: bestehende Unterseiten bleiben unverändert. */
.intro-home {
  max-width: none;
  margin-block: 1rem 2rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--color-border);
  border-left: 8px solid var(--color-action);
  border-radius: 1rem;
  background: var(--color-sage);
  font-size: 1.125rem;
}
.intro-home .status { margin: 0 0 1.5rem; padding: 0.5rem 1rem; background: var(--color-surface); }
.intro-home h1 { overflow-wrap: anywhere; max-width: 21ch; margin: 0 0 1.5rem; font-size: clamp(2.25rem, 4.5vw, 4rem); }
.intro-home p { margin-block: 0 1.5rem; }
.intro-home .lead { font-size: inherit; }
.intro-actions { display: flex; flex-wrap: wrap; align-items: stretch; gap: 1rem; margin-top: 2rem; }
.intro-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 48px;
  margin: 0;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  font-weight: 650;
}
.intro-secondary { border: 1px solid var(--color-action); background: var(--color-surface); }
.intro-actions a:hover { text-decoration-thickness: 3px; }
@media (max-width: 30rem) {
  .intro-actions { flex-direction: column; }
  .intro-actions a { width: 100%; }
}
.status { display: inline-block; padding: 0.3rem 0.8rem; border: 1px solid var(--color-status-border); border-radius: 2rem; font-weight: 650; }
h1, h2, h3 { line-height: 1.2; }
h1 { font-size: clamp(2.25rem, 6vw, 4rem); margin-block: 1rem 1.5rem; }
h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { max-width: var(--width-text); }
.lead { font-size: 1.2rem; }
.button { display: inline-block; margin-top: 1rem; padding: 0.8rem 1.2rem; border-radius: 0.35rem; background: var(--color-action); color: var(--color-surface); font-weight: 650; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 2rem; }
article { padding: 1.5rem; border: 1px solid var(--color-border); border-radius: 0.5rem; background: var(--color-surface); }
.number { color: var(--color-number); font-weight: 750; margin-top: 0; }
.pilot { margin-block: 2rem; padding: 2rem; border-left: 4px solid var(--color-status-border); background: var(--color-sage); }
footer { padding-block: 1.5rem; border-top: 1px solid var(--color-border); font-size: 0.9rem; }
@media (max-width: 48rem) {
  .cards { grid-template-columns: 1fr; }
  .pilot { padding: 1.25rem; }
}