:root{
  --bg:#070b14;
  --bg2:#0b1220;
  --card:#0e172a;
  --text:#e8eefc;
  --muted:#a8b3cf;
  --line:rgba(255,255,255,.10);
  --line2:rgba(255,255,255,.16);

  --accent:#6ee7ff;
  --accent2:#a78bfa;

  --ok:#34d399;
  --danger:#fb7185;
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius:18px;

  --container:1120px;
  --header-h: 70px;
}

*{box-sizing:border-box}
html{scroll-behavior:auto} /* скролл делаем через JS */
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 70% 0%, rgba(110,231,255,.10), transparent 60%),
    radial-gradient(1000px 600px at 10% 20%, rgba(167,139,250,.10), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg2) 60%, #070b14 100%);
  color:var(--text);
}

a{color:inherit; text-decoration:none}
a:hover{opacity:.92}
p{line-height:1.65; color:var(--muted); margin:0}
h1,h2,h3{margin:0 0 10px; letter-spacing:-0.02em}
h1{font-size: clamp(30px, 4.2vw, 52px); line-height:1.08}
h2{font-size: clamp(22px, 2.7vw, 34px)}
h3{font-size:18px}
ul{margin:10px 0 0; padding-left:18px}
li{margin:6px 0; color:var(--muted)}
strong{color:var(--text)}
.tiny{font-size:12px}
.muted{color:var(--muted)}
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.container{width:min(var(--container), 92vw); margin:0 auto}

/* accessibility */
.skip-link{
  position:absolute; left:-999px; top:10px;
  background:var(--card); padding:10px 12px;
  border:1px solid var(--line2);
  border-radius:12px;
}
.skip-link:focus{left:10px; z-index:9999}

/* Header */
.header{
  position:sticky; top:0; z-index:100;
  height:var(--header-h);
  display:flex; align-items:center;
  backdrop-filter: blur(10px);
  background: rgba(7, 11, 20, .55);
  border-bottom:1px solid var(--line);
}
.header__row{
  width:100%;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}

/* Brand */
.brand{display:flex; gap:12px; align-items:center}
.brand__mark{
  width:36px; height:36px; display:grid; place-items:center;
  border:1px solid var(--line2);
  border-radius:12px;

  /* если ставите ЧЁРНЫЙ SVG (solid) — лучше убрать фон */
  background: transparent;

  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
.brand__mark img,
.brand__mark svg{
  width:100%;
  height:100%;
  display:block;
}
.brand__text{display:flex; flex-direction:column; gap:2px}
.brand__text span{font-size:12px; color:var(--muted)}
.brand--small .brand__mark{width:32px;height:32px}

/* Nav */
.nav{display:flex; align-items:center; position:relative}
.nav__toggle{
  display:none;
  width:44px; height:44px; border-radius:14px;
  background:transparent; border:1px solid var(--line2);
  color:var(--text); cursor:pointer;
}
.nav__toggle-lines{
  display:block; width:18px; height:2px; background:var(--text);
  margin:0 auto; position:relative;
}
.nav__toggle-lines::before,.nav__toggle-lines::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:var(--text);
}
.nav__toggle-lines::before{top:-6px}
.nav__toggle-lines::after{top:6px}

.nav__menu{
  list-style:none; display:flex; align-items:center; gap:18px;
  margin:0; padding:0;
}
.nav__menu a{color:var(--muted); font-weight:500; position:relative}
.nav__menu a:hover{color:var(--text)}

/* Active menu underline (JS добавляет .is-active) */
.nav__menu a.is-active{color:var(--text)}
.nav__menu a.is-active::after{
  content:"";
  display:block;
  height:2px;
  margin-top:6px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius:999px;
}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:12px 16px;
  border-radius:14px;
  border:1px solid var(--line2);
  background:rgba(255,255,255,.02);
  color:var(--text);
  cursor:pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease, border-color .12s ease;
}
.btn:hover{transform: translateY(-1px); box-shadow: var(--shadow)}
.btn:focus-visible{outline:none; box-shadow: 0 0 0 4px rgba(110,231,255,.14)}
.btn--primary{
  background: linear-gradient(135deg, rgba(110,231,255,.16), rgba(167,139,250,.16));
  border-color: rgba(110,231,255,.25);
}
.btn--ghost{background:transparent}
.btn--block{width:100%}
.btn--sm{padding:10px 12px; border-radius:12px; font-size:14px}

/* Hero */
.hero{position:relative; padding:48px 0 28px}
.hero__grid{
  display:grid; grid-template-columns: 1.15fr .85fr;
  gap:26px; align-items:start;
}
.hero__bg{
  position:absolute; inset:0;
  background:
    radial-gradient(900px 420px at 15% 10%, rgba(110,231,255,.08), transparent 60%),
    radial-gradient(800px 420px at 80% 15%, rgba(167,139,250,.08), transparent 60%);
  pointer-events:none;
  z-index:-1;
}
.badge{
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--line2);
  background: rgba(255,255,255,.03);
  color:var(--muted);
  font-size:13px;
}
.badge__dot{
  width:8px;height:8px;border-radius:999px;
  background:var(--ok);
  box-shadow:0 0 0 4px rgba(52,211,153,.12);
}
.lead{font-size:16px; margin:14px 0 18px; max-width:72ch}
.grad{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero__cta{display:flex; gap:12px; flex-wrap:wrap; margin:14px 0 20px}

.hero__meta{
  display:grid; grid-template-columns: repeat(3, 1fr);
  gap:10px;
}
.meta-card{
  padding:12px;
  border:1px solid var(--line);
  border-radius:16px;
  background: rgba(14, 23, 42, .55);
}
.meta-card__kpi{
  font-family:"JetBrains Mono", ui-monospace, monospace;
  font-weight:600;
}
.meta-card__txt{font-size:12px; color:var(--muted); margin-top:4px}

.hero__panel{display:flex; flex-direction:column; gap:12px}

/* Terminal */
.terminal{
  border-radius: var(--radius);
  border:1px solid var(--line2);
  background: rgba(14, 23, 42, .70);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.terminal__top{
  display:flex; align-items:center; gap:8px;
  padding:10px 12px;
  border-bottom:1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.dot{width:10px;height:10px;border-radius:50%}
.dot--r{background:#fb7185}
.dot--y{background:#fbbf24}
.dot--g{background:#34d399}
.terminal__title{
  margin-left:6px;
  color:var(--muted);
  font-size:12px;
  font-family:"JetBrains Mono", monospace;
}
.terminal__body{padding:14px 14px 16px; font-family:"JetBrains Mono", monospace; font-size:13px}
.t-muted{color:#7b88ad}
.t-success{color:var(--ok)}
.t-list{margin:8px 0 10px}
.t-list li{color:#b8c4e3}

.panel-cards{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.panel-card{
  padding:14px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(14, 23, 42, .55);
}
.panel-card p{margin-top:8px}

/* Strip */
.strip{padding:18px 0 24px}
.strip__row{display:grid; grid-template-columns: repeat(3, 1fr); gap:12px}
.strip__item{
  display:flex; gap:12px; align-items:flex-start;
  padding:14px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.icon{
  width:36px; height:36px; border-radius:14px;
  border:1px solid var(--line2);
  display:grid; place-items:center;
  background: rgba(255,255,255,.03);
}

/* Sections */
.section{
  padding:52px 0;
  scroll-margin-top: calc(var(--header-h) + 18px);
}
.section--alt{
  background: rgba(255,255,255,.02);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section--contact{padding-bottom:70px}
.section__head{margin-bottom:18px}
.section__head p{max-width:72ch}

/* Cards */
.cards{display:grid; grid-template-columns: repeat(3, 1fr); gap:12px}
.card{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(14, 23, 42, .55);
  box-shadow: 0 10px 28px rgba(0,0,0,.16);
}
.card--accent{
  border-color: rgba(110,231,255,.25);
  background: linear-gradient(135deg, rgba(110,231,255,.09), rgba(167,139,250,.09));
}

/* Two column grid */
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.feature{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(14, 23, 42, .50);
}
.chips{
  list-style:none; padding:0; margin:12px 0 0;
  display:flex; flex-wrap:wrap; gap:8px;
}
.chips li{
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line2);
  background: rgba(255,255,255,.02);
  color:#c8d4f2;
  font-size:12px;
  margin:0;
}

/* Steps */
.steps{list-style:none; padding:0; margin:0; display:grid; gap:10px}
.step{
  display:flex; gap:14px;
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.step__num{
  width:46px; height:46px; border-radius:16px;
  border:1px solid var(--line2);
  display:grid; place-items:center;
  font-family:"JetBrains Mono", monospace;
  background: rgba(255,255,255,.02);
}
.step__body p{margin-top:6px}

/* Note */
.note{
  margin-top:14px;
  padding:14px 16px;
  border-radius: var(--radius);
  border:1px dashed rgba(255,255,255,.22);
  background: rgba(14, 23, 42, .40);
  color:var(--muted);
}

/* Callout + links */
.callout{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(14, 23, 42, .55);
}
.callout a{
  color:#cfeaff;
  text-decoration:underline;
  text-underline-offset:3px;
}
.callout a:hover{opacity:.95}

.disclaimer{
  margin-top:12px;
  font-size:12px;
  color:var(--muted);
  opacity:.9;
}

/* FAQ */
.faq details{
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:14px 16px;
  background: rgba(255,255,255,.02);
  margin-bottom:10px;
}
.faq summary{cursor:pointer; color:var(--text); font-weight:600}
.faq p{margin-top:10px}

/* Contact */
.contact-grid{display:grid; grid-template-columns: 1.1fr .9fr; gap:12px; align-items:start}
.form{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(14, 23, 42, .55);
}
.form label{display:flex; flex-direction:column; gap:8px; color:var(--muted); font-size:13px}
.form input, .form textarea{
  padding:12px;
  border-radius:14px;
  border:1px solid var(--line2);
  background: rgba(0,0,0,.18);
  color:var(--text);
  outline:none;
}
.form input:focus, .form textarea:focus{
  border-color: rgba(110,231,255,.35);
  box-shadow: 0 0 0 4px rgba(110,231,255,.10);
}
.form__row{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:10px}
.check{flex-direction:row !important; align-items:center; gap:10px; margin:10px 0}
.check input{width:18px;height:18px}
.form__result{margin-top:10px; font-size:13px; min-height:18px}

.contact-card{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.list{margin-top:10px}

/* Pay section (если добавили секцию #pay) */
.pay-grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:12px;
  align-items:start;
}
.pay-form{
  border-color: rgba(110,231,255,.14);
}
.pay-card{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.pay-badge{
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--line2);
  background: rgba(255,255,255,.03);
  color:var(--muted);
  font-size:13px;
}
.pay-badge__dot{
  width:8px;height:8px;border-radius:999px;
  background: var(--accent);
  box-shadow:0 0 0 4px rgba(110,231,255,.12);
}
.pay-list{
  list-style:none;
  padding:0;
  margin:12px 0 0;
  display:grid;
  gap:8px;
}
.pay-list li{
  margin:0;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(14, 23, 42, .35);
  color: var(--muted);
}
.pay-list strong{color:var(--text)}
.pay-note{
  margin-top:12px;
  padding:12px 14px;
  border-radius: var(--radius);
  border:1px dashed rgba(255,255,255,.22);
  background: rgba(14, 23, 42, .35);
  color: var(--muted);
}

/* Footer */
.footer{
  border-top:1px solid var(--line);
  background: rgba(7, 11, 20, .65);
  padding:18px 0;
}
.footer__row{display:flex; justify-content:space-between; align-items:center; gap:12px}
.footer__right{display:flex; gap:14px; align-items:center; color:var(--muted)}
.to-top{
  width:40px; height:40px; display:grid; place-items:center;
  border:1px solid var(--line2);
  border-radius:14px;
  background: rgba(255,255,255,.02);
}

/* Responsive */
@media (max-width: 980px){
  .hero__grid{grid-template-columns:1fr}
  .panel-cards{grid-template-columns:1fr 1fr}
  .cards{grid-template-columns:1fr 1fr}
  .strip__row{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .pay-grid{grid-template-columns:1fr}
}

@media (max-width: 720px){
  :root{ --header-h: 64px; }

  .nav__toggle{display:inline-flex; align-items:center; justify-content:center}
  .nav__menu{
    position:absolute;
    right:0; top:52px;
    width:min(360px, 92vw);
    flex-direction:column; align-items:stretch;
    padding:12px;
    border:1px solid var(--line2);
    border-radius: 18px;
    background: rgba(7, 11, 20, .95);
    box-shadow: var(--shadow);
    display:none;
  }
  .nav__menu.is-open{display:flex}
  .nav__menu a{padding:10px 10px; border-radius:12px}
  .nav__menu a:hover{background: rgba(255,255,255,.03)}
  .nav__menu a.is-active::after{display:none} /* в моб меню лучше без подчёркивания */

  .hero__meta{grid-template-columns:1fr}
  .panel-cards{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important}
  .btn{transition:none}
}