:root{
  --brand:#1f6feb;
  --brand-2:#0b3d91;
  --accent:#e0b341;
  --bg:#0e1420;
  --surface:#151d2b;
  --surface-2:#1b2536;
  --text:#eef2f8;
  --muted:#9aa7bd;
  --border:rgba(255,255,255,.09);
  --grad:linear-gradient(135deg,#2b7fff,#0b3d91);
  --container:1160px;
  --font-sans:'Segoe UI',system-ui,-apple-system,'Inter',Roboto,'Helvetica Neue',Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(700px 500px at 85% -5%,rgba(43,127,255,.18),transparent 60%),
    radial-gradient(600px 500px at -5% 20%,rgba(224,179,65,.08),transparent 55%);
  background-attachment:fixed;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(var(--container),92%);margin-inline:auto}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:color-mix(in srgb,var(--bg) 78%,transparent);
  border-bottom:1px solid var(--border)}
.nav__row{display:flex;align-items:center;gap:24px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem}
.brand__mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(43,127,255,.35)}
.brand__name b{color:var(--accent);font-weight:800}
.nav__links{display:flex;gap:26px;margin-left:auto;font-size:.95rem}
.nav__links a{color:var(--muted);transition:color .2s}
.nav__links a:hover{color:var(--text)}
.burger{display:none;background:none;border:0;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--text);border-radius:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--grad);color:#fff;font-weight:700;border:0;cursor:pointer;
  padding:11px 20px;border-radius:12px;transition:transform .18s,box-shadow .18s;
  box-shadow:0 10px 30px rgba(43,127,255,.28)}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(43,127,255,.4)}
.btn--sm{padding:9px 15px;font-size:.9rem;margin-left:0}
.btn--lg{padding:15px 28px;font-size:1.02rem}
.btn--full{width:100%}
.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--border);box-shadow:none}
.btn--ghost:hover{background:var(--surface-2);box-shadow:none}

/* hero */
.hero{position:relative;padding:clamp(48px,7vw,96px) 0 clamp(56px,7vw,110px);overflow:hidden}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.pill{display:inline-block;font-size:.82rem;color:var(--accent);
  background:color-mix(in srgb,var(--accent) 14%,transparent);
  border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);
  padding:7px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:clamp(2.3rem,5vw,3.9rem);line-height:1.05;margin:0 0 18px;letter-spacing:-.02em;font-weight:800}
.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--muted);max-width:44ch;margin:0 0 30px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.hero__stats{list-style:none;display:flex;gap:34px;padding:0;margin:40px 0 0;flex-wrap:wrap}
.hero__stats b{display:block;font-size:1.9rem;font-weight:800;background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero__stats span{color:var(--muted);font-size:.9rem}
.hero__media{position:relative}
.hero__media img{border-radius:22px;aspect-ratio:4/5;object-fit:cover;width:100%;
  border:1px solid var(--border);box-shadow:0 30px 70px rgba(0,0,0,.45)}
.hero__badge{position:absolute;bottom:22px;left:-18px;display:flex;align-items:center;gap:9px;
  background:var(--surface);border:1px solid var(--border);border-radius:14px;
  padding:12px 16px;font-weight:700;font-size:.9rem;color:var(--accent);
  box-shadow:0 16px 40px rgba(0,0,0,.4)}

/* sections */
.section{padding:clamp(56px,8vw,104px) 0}
.section--alt{background:linear-gradient(180deg,transparent,rgba(255,255,255,.02))}
.section--cta{background:
  radial-gradient(600px 400px at 80% 0%,rgba(43,127,255,.14),transparent 60%)}
.sec-head{max-width:640px;margin:0 auto 48px;text-align:center}
.sec-head--left{text-align:left;margin-inline:0}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.14em;
  font-size:.75rem;font-weight:700;color:var(--brand);margin-bottom:12px}
.section h2{font-size:clamp(1.7rem,3.2vw,2.6rem);margin:0 0 12px;letter-spacing:-.02em;font-weight:800}
.sec-head p{color:var(--muted);margin:0}
.muted{color:var(--muted)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:18px;
  padding:26px;transition:transform .2s,border-color .2s,box-shadow .2s}
.card:hover{transform:translateY(-5px);border-color:color-mix(in srgb,var(--brand) 40%,var(--border));
  box-shadow:0 20px 50px rgba(0,0,0,.35)}
.card__ico{display:grid;place-items:center;width:52px;height:52px;border-radius:14px;
  background:color-mix(in srgb,var(--brand) 16%,transparent);color:var(--brand);margin-bottom:18px}
.card h3{margin:0 0 8px;font-size:1.2rem}
.card p{color:var(--muted);margin:0 0 18px;font-size:.96rem}
.card__foot{display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--border);padding-top:16px}
.price{font-weight:800;color:var(--accent)}
.link{color:var(--brand);font-weight:600;font-size:.92rem}

/* calc */
.calc__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.ticks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.ticks li{position:relative;padding-left:30px;color:var(--muted)}
.ticks li::before{content:'';position:absolute;left:0;top:2px;width:18px;height:18px;
  border-radius:50%;background:var(--grad)}
.ticks li::after{content:'';position:absolute;left:6px;top:7px;width:6px;height:3px;
  border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}
.calc{padding:30px}
.field{display:block;margin-bottom:18px}
.field>span{display:block;font-size:.9rem;color:var(--muted);margin-bottom:7px}
.field select,.field input[type=text],.field input[type=tel],.field textarea{
  width:100%;background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  border-radius:11px;padding:12px 14px;font:inherit;transition:border-color .2s}
.field select:focus,.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand)}
.field input[type=range]{width:100%;accent-color:var(--brand)}
.check{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--muted);cursor:pointer;font-size:.95rem}
.check input{width:18px;height:18px;accent-color:var(--brand)}
.calc__total{display:flex;align-items:center;justify-content:space-between;
  background:var(--surface-2);border:1px solid var(--border);border-radius:14px;
  padding:16px 20px;margin:6px 0 18px}
.calc__total span{color:var(--muted)}
.calc__total b{font-size:1.7rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.step{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:26px;position:relative}
.step__n{font-size:2.4rem;font-weight:800;color:color-mix(in srgb,var(--brand) 55%,transparent);line-height:1}
.step h3{margin:14px 0 8px;font-size:1.15rem}
.step p{color:var(--muted);margin:0;font-size:.95rem}

/* reviews */
.review__body{font-style:italic;color:var(--text);margin:14px 0 18px}
.stars{color:var(--accent);display:flex;gap:2px}
.review__foot{border-top:1px solid var(--border);padding-top:14px}
.review__foot b{display:block}
.review__foot span{color:var(--muted);font-size:.86rem}

/* faq */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.faq{display:grid;gap:12px}
.acc{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden}
.acc summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:14px}
.acc summary::-webkit-details-marker{display:none}
.acc__i{position:relative;width:16px;height:16px;flex:none}
.acc__i::before,.acc__i::after{content:'';position:absolute;background:var(--brand);border-radius:2px}
.acc__i::before{top:7px;left:0;width:16px;height:2px}
.acc__i::after{left:7px;top:0;width:2px;height:16px;transition:transform .2s}
.acc[open] .acc__i::after{transform:rotate(90deg);opacity:0}
.acc p{margin:0;padding:0 22px 20px;color:var(--muted)}

/* cta form */
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.contacts{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:16px}
.contacts li{display:flex;align-items:center;gap:12px;color:var(--muted)}
.contacts li svg{color:var(--brand);flex:none}
.contacts a{color:var(--text)}
.form-card{padding:30px}
.form-card h3{margin:0 0 18px;font-size:1.35rem}
.fineprint{font-size:.78rem;color:var(--muted);margin:14px 0 0;text-align:center}
.err{background:rgba(255,80,80,.12);border:1px solid rgba(255,80,80,.3);color:#ff9d9d;
  padding:10px 14px;border-radius:10px;font-size:.9rem;margin:0 0 16px}
.ok{text-align:center;padding:24px 0}
.ok svg{color:var(--accent);margin-bottom:14px}
.ok h3{margin:0 0 8px}
.ok p{color:var(--muted);margin:0}

/* footer */
.footer{border-top:1px solid var(--border);background:var(--surface);padding:52px 0 30px}
.footer__row{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:32px}
.brand--foot{margin-bottom:14px}
.footer h4{margin:0 0 14px;font-size:1rem}
.footer__row a{display:block;color:var(--muted);margin-bottom:9px;transition:color .2s}
.footer__row a:hover{color:var(--text)}
.footer__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--border);margin-top:34px;padding-top:22px;color:var(--muted);font-size:.85rem}

/* reveal */
html.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease-out,ease),transform .6s ease}
html.js .reveal.in{opacity:1;transform:none}

/* responsive */
@media(max-width:900px){
  .nav__links{display:none}
  .burger{display:flex}
  body.menu-open .nav__links{display:flex;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;background:var(--surface);padding:20px;border-bottom:1px solid var(--border);gap:16px}
  .hero__grid,.calc__grid,.faq-wrap,.cta__grid{grid-template-columns:1fr}
  .hero__media{order:-1;max-width:420px}
  .footer__row{grid-template-columns:1fr 1fr}
  .btn--sm{display:none}
}
@media(max-width:520px){
  .footer__row{grid-template-columns:1fr}
  .hero__stats{gap:24px}
}
@media(prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.card:hover{transform:none}
}