*{box-sizing:border-box}body{margin:0;font:17px/1.6 system-ui,-apple-system,Segoe UI,sans-serif;color:#14213d;background:#fff}
a{color:#2563eb}header{display:flex;align-items:center;justify-content:space-between;padding:16px 5vw;border-bottom:1px solid #e5e9f2;flex-wrap:wrap;gap:8px}
.logo{font-weight:800;font-size:20px;color:#0b1f3a;text-decoration:none}nav a{margin-left:18px;text-decoration:none;color:#334155}
.hero{padding:72px 5vw;background:linear-gradient(135deg,#0b1f3a,#1e3a8a);color:#fff}.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.15;margin:0 0 16px;max-width:820px}.hero p{max-width:700px;color:#dbe4f5;font-size:19px}
.btn{display:inline-block;background:#22c55e;color:#06260f;padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:700;margin:8px 10px 0 0}.btn.alt{background:transparent;border:1px solid #93c5fd;color:#fff}
section{padding:56px 5vw;max-width:1100px;margin:auto}h2{font-size:30px;margin:0 0 12px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-top:20px}
.box{border:1px solid #e5e9f2;border-radius:12px;padding:20px;background:#f8fafd}.box h3{margin:0 0 6px}footer{padding:28px 5vw;background:#0b1f3a;color:#94a3b8;font-size:14px}footer a{color:#cbd5e1;margin-right:14px}
code,pre{background:#0f172a;color:#e2e8f0;border-radius:8px}code{padding:2px 6px}pre{padding:14px;overflow:auto;font-size:14px}.ok{color:#15803d}.bad{color:#b91c1c}
@media(max-width:700px){nav a{margin:0 12px 0 0}}