* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
body {
  background-color: #f8faf9;
  color: #22332e;
  line-height: 1.7;
}
header nav {
  background-color: #1f443c;
  padding: 1.2rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 700;
}
.nav-group a {
  color: #e8f1ef;
  text-decoration: none;
  margin-left: 2rem;
  transition: color 0.2s ease;
}
.nav-group a:hover {
  color: #7cc8b8;
}
.hero-block {
  background: linear-gradient(135deg, #28574b, #387062);
  color: white;
  padding: 7rem 2rem;
  text-align: center;
}
.hero-block h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.hero-block p {
  max-width: 720px;
  margin: 0 auto 2.2rem;
  font-size: 1.2rem;
  opacity: 0.92;
}
.btn-primary {
  display: inline-block;
  background-color: #7cc8b8;
  color: #1f443c;
  padding: 1rem 2.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: bold;
}
.btn-primary:hover {
  background-color: #98d8c9;
}
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 5rem 2rem;
}
.container h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #1f443c;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}
.card-item {
  background: #ffffff;
  padding: 2rem;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(31,68,60,0.08);
}
footer {
  background-color: #1f443c;
  color: #e8f1ef;
  text-align: center;
  padding: 2.4rem;
  margin-top: 3rem;
}