:root{--bg:#f6f9fc;--card:#fff;--muted:#64748b;--brand:#1e40af;--accent:#2563eb;--line:#e6eefc}
*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:#0f172a}
.container{max-width:1100px;margin:0 auto;padding:0 18px}
.header{background:#0f172a;color:#fff}.nav{display:flex;justify-content:space-between;align-items:center;padding:12px 0}
.nav .links{display:flex;gap:16px}.cta{background:#2563eb;color:#fff;border-radius:10px;padding:8px 12px}
.section{padding:34px 0}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:0 6px 18px rgba(15,23,42,.05)}
.footer{background:#0b1220;color:#9aa7bf;margin-top:26px;padding:20px 0}.cols{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.input,textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px}.btn{background:#2563eb;color:#fff;border:0;border-radius:10px;padding:12px 16px;cursor:pointer}
@media(max-width:900px){.cols{grid-template-columns:1fr 1fr}}@media(max-width:620px){.cols{grid-template-columns:1fr}}