body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;background:#F4F2EC;color:#1C2333}
.top{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;max-width:960px;margin:0 auto}
.brand{display:inline-flex;gap:10px;align-items:center;font-weight:750;font-size:20px;color:#1C2333;text-decoration:none}
nav{display:flex;gap:14px;align-items:center}nav a{color:#1F2A44}
main{max-width:720px;margin:0 auto;padding:40px 20px 80px}
h1{font-size:clamp(32px,6vw,52px);line-height:1.08;letter-spacing:-.02em;margin:0 0 18px}
.btn{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:9px;background:#1F2A44;color:#fff!important;font-weight:600;text-decoration:none;border:0;font-size:16px;cursor:pointer}
.code{margin-top:36px;display:grid;gap:8px}.code label{font-weight:650}.code div{display:flex;gap:10px;flex-wrap:wrap}
.code input{flex:1 1 220px;min-height:50px;font:500 22px ui-monospace,Menlo,monospace;padding:6px 12px;border:1px solid #D4CFC1;border-radius:9px}