body { font-family: Arial, sans-serif; margin: 0; padding: 0; }
header, footer { background: #2980b9; color: white; padding: 1rem; }
.container { max-width: 1200px; margin: auto; display: flex; justify-content: space-between; align-items: center; }
.logo { max-height: 60px; }
.hero { padding: 2rem; background: #f9f9f9; display: flex; justify-content: center; }
.illus img { max-width: 100%; height: auto; }
footer .container { flex-wrap: wrap; }