body { font-family: Arial; margin:0; background:#f8fafc; }
.nav { background:white; padding:10px; text-align:center; }
.nav a { margin:0 10px; text-decoration:none; }
.hero { text-align:center; padding:100px 20px; }
.hero span { color:#2563eb; }
.btn { background:#2563eb; color:white; padding:10px 20px; }
.search { display:flex; gap:10px; padding:20px; }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:20px; padding:20px; }
.error { color:red; text-align:center; }
footer { text-align:center; margin:40px 0; }