body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}
header {
  background-color: #007799;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
header img {
  height: 60px;
}
nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 8px 12px;
  border-radius: 4px;
}
nav a:hover {
  background-color: #005f73;
}
main {
  padding: 40px 20px;
  max-width: 1000px;
  margin: 0 auto;
}
h1, h2 {
  color: #0077a3;
}
ul {
  margin-top: 0;
  padding-left: 20px;
}
p {
  margin-bottom: 1em;
}
.cta {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 16px;
  background-color: #007799;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}
.cta:hover {
  background-color: #005f73;
}
.leistungen {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 20px;
}
.leistung-item {
  background-color: #f2f2f2;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.leistung-item h3 {
  margin-top: 0;
  color: #0077a3;
}
footer {
  background-color: #f2f2f2;
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: #555;
}

/* Responsive Layout-Erweiterungen */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }
  nav {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  main {
    padding: 20px 10px;
  }
  .leistungen {
    grid-template-columns: 1fr;
  }
  .cta {
    display: block;
    width: 100%;
    text-align: center;
  }
}