*{box-sizing:border-box}body{margin:0;font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1b1f24;background:#fff}
a{color:#0b5cad}.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid #e5e7eb}header .wrap{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;flex-wrap:wrap;gap:8px}
.logo{font-weight:800;color:#111;text-decoration:none}nav a{margin-left:16px;text-decoration:none;color:#333;font-size:15px}
.hero{background:#0f172a;color:#fff;padding:64px 0}.hero h1{font-size:2.2rem;line-height:1.2;margin:0 0 12px}.hero p{color:#cbd5e1;max-width:640px}
.btn{display:inline-block;background:#f59e0b;color:#111;font-weight:700;padding:12px 22px;border-radius:8px;text-decoration:none;border:0;cursor:pointer;font-size:16px}
.btn.alt{background:transparent;color:#fff;border:2px solid #fff;margin-left:8px}
section{padding:48px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{border:1px solid #e5e7eb;border-radius:12px;padding:22px}.card h3{margin-top:0}.price{font-size:1.4rem;font-weight:800}
.muted{color:#6b7280;font-size:14px}.guarantee{font-size:14px;font-weight:600}
form label{display:block;font-weight:600;margin:12px 0 4px}form input,form select{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:8px;font-size:16px}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:400}.check input{width:auto;margin-top:5px}
#result{display:none;background:#ecfdf5;border:1px solid #10b981;padding:16px;border-radius:10px;margin-top:16px}
footer{border-top:1px solid #e5e7eb;padding:24px 0;font-size:14px;color:#6b7280}