:root{--brand:#2563eb;--accent:#16a34a;--text:#1e293b;--bg:#ffffff;--muted:#64748b;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:24px}
.nav{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid #e5e7eb}
.nav a.logo{font-weight:700;font-size:20px;color:var(--brand)}
.nav .links a{margin-left:20px}
.hero{padding:60px 0;text-align:center}
.hero h1{font-size:40px;margin-bottom:16px}
.hero p{font-size:18px;color:var(--muted);max-width:700px;margin:0 auto 24px}
.btn{display:inline-block;background:var(--brand);color:white;padding:12px 20px;border-radius:6px;font-weight:600}
.section{padding:60px 0}
h2{text-align:center;margin-bottom:32px}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{border:1px solid #e5e7eb;border-radius:8px;padding:20px;box-shadow:0 2px 4px rgba(0,0,0,0.04)}
.footer{text-align:center;padding:20px;border-top:1px solid #e5e7eb;color:var(--muted);font-size:14px;margin-top:40px}
form{max-width:600px;margin:0 auto;display:grid;gap:16px}
input,textarea{width:100%;padding:12px;border:1px solid #cbd5e1;border-radius:6px}
button{background:var(--brand);color:white;padding:12px;border:none;border-radius:6px;font-weight:600;cursor:pointer}
button:hover{background:#1d4ed8}