body{margin:0;font-family:Arial,sans-serif;color:#333;background:#f6f8fb}
.container{max-width:1100px;margin:auto;padding:0 20px}
.site-header{background:#203a43;color:#fff;text-align:center;padding:50px 0}
.tagline{opacity:.9}
.main-nav{background:#fff;border-bottom:1px solid #ddd}
.main-nav ul{list-style:none;display:flex;justify-content:center;margin:0;padding:0}
.main-nav li{margin:0 15px}
.main-nav a{text-decoration:none;color:#333;font-weight:600;padding:15px 0;display:block}
.hero{text-align:center;padding:60px 0;background:#fff}
.section{padding:60px 0}
.section.light{background:#fff}
.features li{margin-bottom:10px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.card{background:#f6f8fb;padding:20px;border-radius:6px}
.site-footer{background:#203a43;color:#fff;text-align:center;padding:20px 0}