body { font-family: Arial, sans-serif; margin:0; padding:0; }
.container { max-width: 960px; margin: auto; padding: 20px; }
.site-header, .site-footer { background:#f5f5f5; padding:10px 0; }
.nav a { margin:0 10px; text-decoration:none; color:#333; }
.hero { background:#eaf2ff; padding:40px 20px; text-align:center; }
.btn { padding:10px 20px; border:1px solid #007bff; border-radius:5px; }
.btn-primary { background:#007bff; color:#fff; }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:20px; }
.card { border:1px solid #ddd; padding:10px; border-radius:8px; }
form label { display:block; margin:10px 0; }