/* styles.css */
:root{--accent:#0b5;--text:#222;--muted:#666}
*{box-sizing:border-box}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,'Helvetica Neue',Arial;background:#fff;color:var(--text);margin:0}
.container{max-width:1100px;margin:0 auto;padding:1rem}
.site-header{background:#0f1720;color:white}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.brand{margin:0;padding:.8rem 0}
.nav a{color:inherit;margin-left:1rem;text-decoration:none}
.hero{padding:3rem 1rem;text-align:left}
.hero h2{margin:.2rem 0 0.5rem;font-size:1.8rem}
.btn{display:inline-block;margin-top:1rem;padding:.6rem 1rem;background:var(--accent);color:#042;border-radius:6px;text-decoration:none}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;padding:2rem 0}
.features article{border:1px solid #eee;padding:1rem;border-radius:8px}
.site-footer{border-top:1px solid #eee;padding:1rem;margin-top:2rem;color:var(--muted)}
@media (max-width:640px){.site-header .container{flex-direction:column;gap:.5rem}.hero{text-align:center}}