:root{
  --bg:#f6f8fb; --surface:#fff; --text:#12203a; --muted:#5a6b87;
  --brand:#1a56db; --brand-dark:#123fa3; --border:#dde4ef; --ok:#0e7a4f;
  --radius:14px; --shadow:0 4px 20px rgba(18,32,58,.08);
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg); color:var(--text);
  font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
h1,h2,h3{line-height:1.25; margin:0 0 .5em}
a{color:var(--brand)}
.wrap{max-width:1120px; margin:0 auto; padding:0 20px}
.skip{position:absolute; left:-9999px}
.skip:focus{left:8px; top:8px; z-index:99; background:#fff; padding:10px 14px; border-radius:8px}
:focus-visible{outline:3px solid var(--brand); outline-offset:2px}

header{position:sticky; top:0; z-index:20; background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px); border-bottom:1px solid var(--border)}
.nav{display:flex; align-items:center; gap:24px; min-height:68px}
.logo{font-weight:700; font-size:19px; text-decoration:none; color:var(--text)}
.logo span{color:var(--brand)}
.nav ul{display:flex; gap:22px; list-style:none; margin:0 0 0 auto; padding:0; flex-wrap:wrap}
.nav a:not(.logo):not(.btn){color:var(--muted); text-decoration:none; font-size:15px}
.nav a:not(.logo):not(.btn):hover{color:var(--brand)}

.btn{display:inline-block; background:var(--brand); color:#fff; text-decoration:none;
  border:0; padding:13px 22px; border-radius:10px; font:inherit; font-weight:600;
  cursor:pointer; text-align:center}
.btn:hover{background:var(--brand-dark)}
.btn--ghost{background:transparent; color:var(--brand); border:1px solid var(--brand)}
.btn--ghost:hover{background:#eaf0fd}
.btn--full{width:100%}

.hero{padding:64px 0 48px; display:grid; grid-template-columns:1.05fr .95fr; gap:48px; align-items:center}
.hero h1{font-size:clamp(28px,4vw,44px)}
.hero-text{color:var(--muted); font-size:18px; max-width:52ch}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:26px}
.trust{display:flex; gap:28px; margin-top:34px; flex-wrap:wrap}
.trust b{display:block; font-size:24px}
.trust small{color:var(--muted)}

section{padding:56px 0}
.lead{color:var(--muted); max-width:60ch; margin-bottom:32px}
.grid{display:grid; gap:20px; grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:24px; box-shadow:var(--shadow)}
.card h3{font-size:18px}
.card p{color:var(--muted); margin:0 0 14px; font-size:15px}
.card .price{font-weight:600; color:var(--ok); font-size:15px; margin:0}
.ico{width:44px; height:44px; border-radius:11px; background:#eaf0fd; color:var(--brand);
  display:grid; place-items:center; font-size:22px; margin-bottom:14px}

.calc{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:28px; box-shadow:var(--shadow)}
.calc-title{font-size:20px}
.field{margin-bottom:18px}
label{display:block; font-weight:600; font-size:14px; margin-bottom:6px}
input,select{width:100%; padding:12px 14px; border:1px solid var(--border);
  border-radius:10px; font:inherit; background:#fff; color:var(--text)}
.hint{color:var(--muted); font-size:13px; margin-top:6px}
.hint--tight{margin-top:-4px}
.row{display:grid; grid-template-columns:1fr 1fr; gap:16px}
.result{display:block; margin-top:20px; padding:18px; border-radius:12px;
  background:#eaf0fd; border:1px solid #cfdcfa}
.result b{font-size:28px; display:block}
.result-label{display:block; color:var(--brand-dark); font-size:13px}
.err{color:#b3261e; font-size:13px; margin:6px 0 0}
.err--light{color:#ffd8d5}

.check{display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:center}
.check input{width:18px; height:18px; margin:0}
.check label{margin:0; font-weight:400; font-size:14px}
.check .err{grid-column:1 / -1}

ol.steps{list-style:none; counter-reset:s; padding:0; display:grid; gap:20px;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
ol.steps li{counter-increment:s; background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius); padding:24px}
ol.steps li::before{content:counter(s); display:grid; place-items:center; width:34px; height:34px;
  border-radius:50%; background:var(--brand); color:#fff; font-weight:700; margin-bottom:12px}
ol.steps h3{font-size:17px}
ol.steps p{color:var(--muted); margin:0; font-size:15px}

details{background:var(--surface); border:1px solid var(--border); border-radius:12px;
  padding:16px 20px; margin-bottom:12px}
summary{cursor:pointer; font-weight:600}
details p{color:var(--muted); margin:12px 0 0}

.cta{background:var(--brand); color:#fff; border-radius:var(--radius); padding:44px; text-align:center}
.cta h2{color:#fff}
.cta > p{color:#dbe4fb; max-width:50ch; margin:0 auto 24px}
.cta label{color:#fff}
.cta .btn{background:#fff; color:var(--brand)}
.cta .btn:hover{background:#eaf0fd}
.lead-form{max-width:420px; margin:0 auto; text-align:left}
.hint--light{color:#dbe4fb}

footer{background:#0d1830; color:#9fb0cc; padding:44px 0 28px; font-size:14px}
footer a{color:#cbd8ee}
.foot{display:grid; gap:28px; grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
footer h4{color:#fff; margin:0 0 10px; font-size:15px}
footer ul{list-style:none; padding:0; margin:0}
footer li{margin-bottom:7px}
.foot-about{margin:0}
.legal{border-top:1px solid #1e2d4c; margin-top:32px; padding-top:18px; font-size:13px}

@media (max-width:860px){
  .hero{grid-template-columns:1fr; padding-top:36px}
  .nav ul{display:none}
  .nav-cta{margin-left:auto}
  .row{grid-template-columns:1fr}
  .cta{padding:32px 20px}
}