:root{
  --lime:#B6F23B; --graphite:#181C20; --white:#fff;
  --ink:#0F1215; --panel:#1F252A; --line:#2C3439; --muted:#9AA5AC;
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--graphite); color:var(--white);
  font:400 18px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
a{color:inherit}

/* шапка */
header{position:sticky;top:0;z-index:20;background:rgba(24,28,32,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hrow{display:flex;align-items:center;justify-content:space-between;gap:16px;height:76px}
.hrow img{height:46px;width:auto;display:block}
.btn{
  display:inline-block;background:var(--lime);color:var(--ink);
  font-weight:700;font-size:16px;letter-spacing:.01em;
  padding:14px 24px;border-radius:10px;text-decoration:none;
  transition:transform .12s ease,filter .12s ease;white-space:nowrap;
}
.btn:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn.big{font-size:19px;padding:19px 34px}
.btn.ghost{background:transparent;color:var(--white);border:1px solid var(--line);font-weight:600}

/* герой */
.hero{padding:96px 0 84px;border-bottom:1px solid var(--line)}
h1{font-size:clamp(40px,6.4vw,76px);line-height:1.02;font-weight:800;letter-spacing:-.025em}
h1 em{font-style:normal;color:var(--lime)}
.lead{margin-top:26px;font-size:clamp(18px,2.2vw,23px);line-height:1.5;color:#D6DDE1;max-width:640px}
.cta{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.note{margin-top:18px;font-size:15px;color:var(--muted)}

section{padding:88px 0;border-bottom:1px solid var(--line)}
h2{font-size:clamp(28px,3.6vw,42px);line-height:1.12;font-weight:800;letter-spacing:-.02em}
.sub{margin-top:14px;color:var(--muted);font-size:17px;max-width:620px}

.grid{display:grid;gap:20px;margin-top:44px}
.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px}
.card h3{font-size:21px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:16px;line-height:1.55}
.num{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:10px;
  background:var(--lime);color:var(--ink);font-weight:800;font-size:17px;margin-bottom:18px}

.devices{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.chip{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:11px 20px;font-size:16px;color:#D6DDE1}

.ref{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.big-num{font-size:clamp(64px,10vw,124px);line-height:.9;font-weight:800;color:var(--lime);letter-spacing:-.04em}

.faq{margin-top:40px;border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:24px 0;font-size:19px;font-weight:600;display:flex;justify-content:space-between;gap:20px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--lime);font-weight:700;font-size:24px;line-height:1}
details[open] summary::after{content:"–"}
details p{padding:0 0 24px;color:var(--muted);font-size:17px;max-width:760px}

.final{padding:96px 0;text-align:center;border-bottom:1px solid var(--line)}
.final h2{max-width:760px;margin:0 auto}
.final .cta{justify-content:center}

footer{padding:44px 0 60px;color:var(--muted);font-size:15px}
.frow{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer img{height:30px;opacity:.85}
footer a{color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line)}
footer a:hover{color:var(--white)}

@media(max-width:860px){
  .g3{grid-template-columns:1fr}
  .ref{grid-template-columns:1fr;gap:28px}
  section{padding:64px 0}
  .hero{padding:64px 0 56px}
  h1 br{display:none}
}

.kicker{display:inline-flex;align-items:center;gap:10px;margin-bottom:24px;
  border:1px solid #38491F;background:rgba(182,242,59,.09);color:var(--lime);
  border-radius:999px;padding:9px 18px 9px 14px;font-size:15px;font-weight:600;letter-spacing:.01em}
.kicker span{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:none}
@media(max-width:520px){.kicker{font-size:13.5px;padding:8px 14px 8px 12px}}

/* шапка на телефоне: кнопка не должна выезжать за край */
@media(max-width:560px){
  .hrow{height:64px;gap:12px}
  .hrow img{height:32px}
  header .btn{font-size:14px;padding:11px 15px;border-radius:9px}
}
@media(max-width:380px){
  .hrow img{height:28px}
  header .btn .hb{display:none}
}