:root {
  --blue: #1b7fc4;
  --blue-dark: #12598a;
  --ink: #1d232a;
  --muted: #5c6670;
  --line: #e2e6ea;
  --bg: #f6f8fa;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}

a { color: var(--blue); }
a:hover { color: var(--blue-dark); }

.wrap {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Kopfbereich */
.hero {
  background: #000;
  color: #fff;
  padding: 56px 0 28px;
  text-align: center;
}

.hero-logo {
  width: 100%;
  max-width: 560px;
  height: auto;
}

.hero-sub {
  margin: 20px auto 0;
  max-width: 34em;
  color: #c9d1d9;
  font-size: 1.05rem;
}

.hero-nav {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.hero-nav a {
  color: #fff;
  text-decoration: none;
  padding: 8px 18px;
  border: 1px solid #3a3f45;
  border-radius: 999px;
  font-size: .95rem;
}

.hero-nav a:hover {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

/* Abschnitte */
.section { padding: 56px 0 8px; }

h2 {
  margin: 0 0 18px;
  font-size: 1.6rem;
  line-height: 1.25;
}

h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  margin-top: 10px;
  border-radius: 2px;
  background: var(--blue);
}

.thema {
  margin: 24px 0;
  padding: 18px 22px;
  border-left: 4px solid var(--blue);
  background: var(--card);
  font-size: 1.2rem;
  font-weight: 600;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
}

.step h3 { margin: 6px 0 8px; font-size: 1.15rem; }
.step p { margin: 0; color: var(--muted); }

.step-label {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--blue);
}

/* Downloads */
.downloads { display: grid; gap: 12px; }

.dl {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  text-decoration: none;
  transition: border-color .15s, box-shadow .15s;
}

.dl:hover {
  color: var(--ink);
  border-color: var(--blue);
  box-shadow: 0 4px 16px rgba(27, 127, 196, .12);
}

.dl-icon {
  flex: none;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: #000;
  color: #fff;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .05em;
}

.dl-text { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.dl-text span { color: var(--muted); font-size: .95rem; }

.dl-size {
  flex: none;
  color: var(--muted);
  font-size: .9rem;
  white-space: nowrap;
}

.hinweis {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: .95rem;
}

/* Fußbereich */
.footer {
  margin-top: 64px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
  text-align: center;
}

.footer p { margin: 4px 0; }

@media (max-width: 520px) {
  body { font-size: 16px; }
  .hero { padding-top: 40px; }
  .dl { flex-wrap: wrap; }
  .dl-size { width: 100%; padding-left: 70px; }
}