body{margin:0;font-family:Inter,Arial,sans-serif;color:#222;background:#fff}
header{position:sticky;top:0;background:#fff;padding:18px 5%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #eee;z-index:100}
nav a{margin:0 12px;text-decoration:none;color:#222}
.hero{height:90vh;background:linear-gradient(rgba(0,0,0,.45),rgba(0,0,0,.45)),url('https://images.unsplash.com/photo-1517048676732-d65bc937f952?fit=crop&w=1600&q=80');background-size:cover;display:flex;align-items:center}
.hero-content{color:white;max-width:700px;margin-left:8%}
.hero h1{font-size:64px;margin:0}
.section{padding:90px 8%}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px}
.card{border:1px solid #eee;padding:25px}
.dark{background:#111;color:white}
footer{background:#111;color:#fff;padding:40px 8%}
.news{background:#f5f5f5}