:root {
  --primary: #1a237e;
  --accent: #ff9800;
  --bg: #f5f7fa;
  --text: #222;
  --section-bg: #fff;
  --border-radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
header {
  background: var(--primary);
  color: #fff;
  padding: 2.5rem 0 2rem 0;
  text-align: center;
  box-shadow: 0 2px 8px rgba(26,35,126,0.08);
}
header h1 {
  margin: 0;
  font-size: 2.8rem;
  letter-spacing: 2px;
}
header p {
  margin: 1rem 0 0 0;
  font-size: 1.25rem;
  color: #c5cae9;
}
nav {
  margin-top: 1.5rem;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 1.2rem;
  font-weight: 500;
  transition: color 0.2s;
}
nav a:hover {
  color: var(--accent);
}
main {
  max-width: 900px;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
}
section {
  background: var(--section-bg);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 12px rgba(26,35,126,0.04);
  margin-bottom: 2.5rem;
  padding: 2.5rem 2rem;
}
section h2 {
  color: var(--primary);
  margin-top: 0;
  font-size: 2rem;
}
.expertise-list, .products-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 2rem 0 0 0;
  padding: 0;
  list-style: none;
}
.expertise-item, .product-item {
  flex: 1 1 220px;
  background: #f0f3fa;
  border-radius: 8px;
  padding: 1.5rem 1rem;
  box-shadow: 0 1px 4px rgba(26,35,126,0.03);
  text-align: center;
}
.expertise-item h3, .product-item h3 {
  margin: 0.5rem 0 0.7rem 0;
  color: var(--accent);
  font-size: 1.2rem;
}
.contact {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  font-size: 1.1rem;
}
.contact strong {
  color: var(--primary);
}
footer {
  text-align: center;
  color: #888;
  font-size: 1rem;
  padding: 2rem 0 1rem 0;
}
@media (max-width: 700px) {
  main { padding: 0 0.5rem; }
  section { padding: 1.5rem 0.7rem; }
  .expertise-list, .products-list { flex-direction: column; gap: 1rem; }
}