/* ===========================
   Pavel Zemskov — modern landing
   Pure HTML/CSS/JS (no build)
   =========================== */

:root{
  --bg:#070A12;
  --bg2:#0B0F1A;
  --text:#EAF0FF;
  --muted:rgba(234,240,255,.72);
  --muted2:rgba(234,240,255,.55);
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --glass2:rgba(255,255,255,.10);
  --accent:#8A5CFF;
  --accent2:#00D1FF;
  --ok:#40ffb6;
  --shadow: 0 30px 90px rgba(0,0,0,.55);
  --shadow2: 0 14px 40px rgba(0,0,0,.35);
  --radius: 22px;
  --radius2: 30px;
  --container: 1180px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Manrope", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 600px at 20% -10%, rgba(138,92,255,.30), transparent 60%),
              radial-gradient(1000px 500px at 85% 0%, rgba(0,209,255,.22), transparent 55%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  overflow-x:hidden;
}

img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
button,input,textarea{font:inherit}
::selection{background:rgba(138,92,255,.35)}
.sr{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip{position:absolute; left:-9999px; top:8px}
.skip:focus{left:12px; padding:10px 12px; background:var(--bg2); border:1px solid var(--line); border-radius:12px; z-index:99999}

.container{width:min(var(--container), calc(100% - 40px)); margin:0 auto}
.section{padding:92px 0}
.section--alt{
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
}

.h2{font-size: clamp(26px, 3vw, 40px); line-height:1.1; margin:0 0 12px}
.h3{font-size: 18px; margin:0 0 8px}
.p{margin:0; font-size: 16px; line-height:1.6}
.muted{color:var(--muted)}
.tiny{font-size: 12.5px; line-height:1.5; color:var(--muted2)}

.grad{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

.link{opacity:.8}
.link:hover{opacity:1}

/* Header */
.header{
  position:sticky; top:0; z-index:1000;
  backdrop-filter: blur(14px);
  background: rgba(7,10,18,.62);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header__inner{display:flex; align-items:center; justify-content:space-between; gap:14px; padding:14px 0}

.brand{display:flex; align-items:center; gap:10px}
.brand__mark{
  width:30px; height:30px; border-radius: 10px;
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,.65), rgba(255,255,255,0) 55%),
              linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 12px 30px rgba(138,92,255,.20), 0 12px 30px rgba(0,209,255,.12);
}
.brand__text{font-weight:800; letter-spacing:.2px}
.brand--small .brand__mark{width:24px;height:24px;border-radius:9px}
.brand--small .brand__text{font-weight:700}

.nav{position:relative}
.nav__toggle{
  display:none; align-items:center; justify-content:center;
  width:44px; height:44px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  color:var(--text);
}
.nav__toggleLines{
  width:18px; height:12px; position:relative; display:block;
}
.nav__toggleLines::before,.nav__toggleLines::after,.nav__toggleLines span{
  content:""; position:absolute; left:0; right:0; height:2px;
  background: rgba(255,255,255,.88); border-radius: 10px;
}
.nav__toggleLines::before{top:0}
.nav__toggleLines::after{bottom:0}
.nav__toggleLines span{top:5px}

.nav__menu{display:flex; align-items:center; gap:8px; list-style:none; padding:0; margin:0}
.nav__link{
  display:inline-flex; align-items:center;
  padding:10px 12px;
  border-radius: 14px;
  color:rgba(234,240,255,.86);
  border:1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.nav__link:hover{background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.10); transform: translateY(-1px)}
.nav__link--cta{
  background: linear-gradient(135deg, rgba(138,92,255,.35), rgba(0,209,255,.20));
  border-color: rgba(255,255,255,.12);
}
.header__bar{
  height:2px; width:0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

/* Hero */
.hero{position:relative; padding:72px 0 84px}
.hero__bg{position:absolute; inset:0; overflow:hidden}
.hero__bgImg{
  width:100%; height:100%; object-fit:cover;
  transform: scale(1.06);
  filter: contrast(1.05) saturate(1.10);
}
.hero__grain{
  position:absolute; inset:-30%;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity:.55;
  transform: rotate(6deg);
}
.hero__glow{position:absolute; width:900px; height:900px; border-radius: 50%; filter: blur(60px); opacity:.55}
.hero__glow--a{left:-240px; top:-300px; background: rgba(138,92,255,.55)}
.hero__glow--b{right:-240px; top:-320px; background: rgba(0,209,255,.35)}
.hero__inner{position:relative; display:grid; grid-template-columns: 1.15fr .85fr; gap:40px; align-items:center}
.hero__title{
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1.02;
  margin:14px 0 14px;
  letter-spacing:-.6px;
}
.hero__subtitle{font-size:16.5px; line-height:1.7; color:var(--muted); margin:0 0 22px; max-width: 58ch}
.badge{
  display:inline-flex; align-items:center; gap:10px;
  padding:10px 12px;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  border-radius: 999px;
  box-shadow: var(--shadow2);
  font-size: 13px;
}
.badge__dot{width:8px; height:8px; border-radius:50%; background: var(--ok); box-shadow: 0 0 0 6px rgba(64,255,182,.12)}
.hero__actions{display:flex; gap:12px; align-items:center; flex-wrap:wrap}
.btn{
  position:relative;
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
  box-shadow: var(--shadow2);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  user-select:none;
}
.btn:hover{transform: translateY(-1px); box-shadow: 0 18px 50px rgba(0,0,0,.35)}
.btn:active{transform: translateY(0px)}
.btn--primary{
  border-color: rgba(255,255,255,.16);
  background: linear-gradient(135deg, rgba(138,92,255,.55), rgba(0,209,255,.25));
}
.btn--ghost{background: rgba(255,255,255,.04)}
.btn--small{padding:10px 12px; border-radius: 14px; font-size: 13px}
.btn--full{width:100%}
.btn__shine{
  position:absolute; inset:-2px; border-radius: 18px; pointer-events:none;
  background: linear-gradient(110deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.28) 20%, rgba(255,255,255,0) 45%);
  transform: translateX(-120%);
  animation: shine 6s ease-in-out infinite;
  mix-blend-mode: overlay;
}
@keyframes shine{
  0%,55%{transform:translateX(-140%)}
  70%{transform:translateX(140%)}
  100%{transform:translateX(140%)}
}
.hero__trust{display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:10px; margin-top:24px}
.trustCard{
  padding:14px 14px;
  border-radius: 18px;
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
}
.trustCard__num{font-weight:800; font-size: 22px}
.trustCard__label{font-size: 12.5px; color:var(--muted2)}

/* Visual card with faux 3D */
.hero__visual .note{margin:10px 0 0; color:var(--muted2); font-size: 12.5px}
.visualCard{
  position:relative;
  padding:18px;
  border-radius: var(--radius2);
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.visualCard::before{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(900px 450px at 30% -10%, rgba(138,92,255,.35), transparent 60%),
              radial-gradient(900px 450px at 80% 0%, rgba(0,209,255,.22), transparent 58%);
  opacity:.9;
}
.visualCard > *{position:relative}
.visualCard__top{display:flex; align-items:center; justify-content:space-between; gap:12px}
.chip{
  font-size:12px;
  padding:8px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  color:rgba(234,240,255,.85);
  max-width: 60%;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.pulse{display:flex; align-items:center; gap:8px; font-size:12px; color:rgba(234,240,255,.86)}
.pulse__dot{
  width:8px; height:8px; border-radius:50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(64,255,182,.38);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(64,255,182,.45)}
  70%{box-shadow:0 0 0 12px rgba(64,255,182,0)}
  100%{box-shadow:0 0 0 0 rgba(64,255,182,0)}
}
.visualCard__chart{margin-top:16px}
#spark{
  width:100%;
  height:auto;
  border-radius: 18px;
  background: rgba(0,0,0,.25);
  border:1px solid rgba(255,255,255,.10);
}
.chartHint{display:flex; gap:8px; margin-top:10px; flex-wrap:wrap}
.chartHint__pill{
  font-size:12px;
  padding:7px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
}
.visualCard__bottom{display:grid; grid-template-columns: 1fr 1fr; gap:10px; margin-top:16px}
.kpi{
  padding:12px 12px;
  border-radius: 18px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
}
.kpi__label{font-size:12px; color:var(--muted2)}
.kpi__value{font-weight:800}

.orb{
  position:absolute; right:-160px; bottom:-210px;
  width:520px; height:auto; opacity:.85;
  transform: rotate(12deg);
  filter: drop-shadow(0 30px 60px rgba(0,0,0,.5));
  pointer-events:none;
}
.blob{
  position:absolute; left:-240px; bottom:-260px;
  width:520px; height:auto; opacity:.55;
  transform: rotate(-10deg);
  pointer-events:none;
}

/* grids */
.grid2{display:grid; grid-template-columns: 1fr 1fr; gap:30px; align-items:stretch}
.sectionHead{margin-bottom:26px}

.list{list-style:none; padding:0; margin:18px 0 0}
.list li{display:flex; gap:10px; align-items:flex-start; padding:8px 0; color:rgba(234,240,255,.86)}
.check{
  width:18px; height:18px; border-radius:7px; flex:0 0 18px;
  background: linear-gradient(135deg, rgba(138,92,255,.9), rgba(0,209,255,.75));
  position:relative; top:2px;
}
.check::after{
  content:"";
  position:absolute; left:5px; top:4px; width:7px; height:4px;
  border-left:2px solid rgba(255,255,255,.95);
  border-bottom:2px solid rgba(255,255,255,.95);
  transform: rotate(-45deg);
}

.card3d{
  position:relative; border-radius: var(--radius2); overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow: var(--shadow);
  min-height: 360px;
}
.card3d__bg{position:absolute; inset:0}
.card3d__bg img{width:100%; height:100%; object-fit:cover; filter:saturate(1.1) contrast(1.05)}
.card3d__bg::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(7,10,18,.25), rgba(7,10,18,.92));
}
.card3d__content{position:relative; padding:22px}
.miniTitle{font-size:12px; color:rgba(234,240,255,.78)}
.bigStat{font-size:46px; font-weight:900; letter-spacing:-1px; margin:8px 0 4px}
.hr{height:1px; background:rgba(255,255,255,.10); margin:14px 0}
.gridMini{display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap:10px}
.miniKpi{
  padding:10px 10px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  display:flex; flex-direction:column; gap:6px
}
.miniKpi b{font-size:12px}
.miniKpi span{font-size:12px; color:var(--muted2)}

/* service cards */
.cards{display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap:14px}
.svc{
  padding:18px;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  box-shadow: var(--shadow2);
  overflow:hidden;
  position:relative;
}
.svc::before{
  content:""; position:absolute; inset:-1px;
  background: radial-gradient(500px 260px at 30% -10%, rgba(138,92,255,.25), transparent 60%),
              radial-gradient(500px 260px at 110% 0%, rgba(0,209,255,.16), transparent 55%);
  opacity:.65;
}
.svc > *{position:relative}
.svc__icon{font-size:22px; margin-bottom:10px}
.svc__list{list-style:none; padding:0; margin:14px 0 0; color:rgba(234,240,255,.86)}
.svc__list li{padding:7px 0; border-top:1px dashed rgba(255,255,255,.10)}
.svc__list li:first-child{border-top:0}

.ctaStrip{
  margin-top:18px;
  padding:18px;
  border-radius: var(--radius2);
  border:1px solid rgba(255,255,255,.12);
  background: linear-gradient(135deg, rgba(138,92,255,.22), rgba(0,209,255,.10));
  box-shadow: var(--shadow2);
  display:flex; align-items:center; justify-content:space-between; gap:14px;
}
.ctaStrip__title{font-weight:900; font-size:18px}
.ctaStrip__text{font-size:13.5px; margin-top:4px}

/* Cases */
.cases{display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:14px}
.case{
  border-radius: var(--radius2);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  box-shadow: var(--shadow2);
  display:flex; flex-direction:column;
}
.case__media{position:relative; height:190px}
.case__media img{width:100%; height:100%; object-fit:cover; filter:saturate(1.1) contrast(1.05)}
.case__media::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(0,0,0,0), rgba(7,10,18,.75));
}
.case__badge{
  position:absolute; left:14px; top:14px;
  font-size:12px; padding:8px 10px; border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.30);
}
.case__body{padding:16px}
.case__kpis{display:flex; gap:8px; flex-wrap:wrap; margin:12px 0 14px}
.pill{
  font-size:12px; padding:7px 10px; border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
}

/* Steps */
.steps{display:grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap:12px}
.step{
  padding:16px;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
}
.step__num{font-weight:900; font-size:14px; color:rgba(234,240,255,.86)}
.step__title{font-weight:900; margin:8px 0 6px}
.step__text{font-size:13.5px; line-height:1.55}

/* Pricing */
.pricing{display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:14px}
.priceCard{
  padding:18px;
  border-radius: var(--radius2);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  box-shadow: var(--shadow2);
  position:relative;
  overflow:hidden;
}
.priceCard::before{
  content:""; position:absolute; inset:-1px;
  background: radial-gradient(520px 260px at 20% -10%, rgba(138,92,255,.22), transparent 60%),
              radial-gradient(520px 260px at 120% 0%, rgba(0,209,255,.14), transparent 55%);
  opacity:.7;
}
.priceCard > *{position:relative}
.priceCard__tag{
  display:inline-flex;
  font-size:12px; padding:7px 10px; border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
}
.priceCard__price{font-weight:900; font-size:22px; margin:10px 0}

/* FAQ */
.faq{display:grid; grid-template-columns: 1fr; gap:10px}
.faqItem{
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  padding:14px 16px;
}
.faqItem summary{
  cursor:pointer;
  font-weight:800;
  list-style:none;
}
.faqItem summary::-webkit-details-marker{display:none}
.faqItem summary::after{
  content:"+";
  float:right;
  opacity:.85;
}
.faqItem[open] summary::after{content:"–"}
.faqItem__body{margin-top:10px; font-size:14px; line-height:1.65}

/* Contact */
.contact{display:grid; grid-template-columns: 1fr 1fr; gap:18px; align-items:stretch}
.contact__cards{display:grid; grid-template-columns: 1fr 1fr; gap:10px; margin-top:18px}
.miniCard{
  padding:14px;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
}
.miniCard__title{font-weight:900; margin-bottom:6px}

.form{
  padding:18px;
  border-radius: var(--radius2);
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  box-shadow: var(--shadow2);
}
.form__row{display:grid; grid-template-columns: 1fr 1fr; gap:10px}
.form__row--center{grid-template-columns: 1fr; margin-top:10px}

.field{display:flex; flex-direction:column; gap:8px}
.field__label{font-size:12.5px; color:rgba(234,240,255,.78)}
.field__input{
  padding:12px 12px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  color:var(--text);
  outline:none;
  transition: border-color .15s ease, transform .15s ease, background .15s ease;
}
.field__input:focus{
  border-color: rgba(138,92,255,.55);
  background: rgba(0,0,0,.30);
}
.field__input--ta{min-height: 120px; resize: vertical}
.toast{
  margin-top:12px;
  padding:12px 12px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.28);
  display:none;
}

/* Footer */
.footer{padding:26px 0}
.footer__inner{display:flex; align-items:flex-start; justify-content:space-between; gap:16px}
.footer__left{display:flex; flex-direction:column; gap:8px}

/* Modal */
.modal{position:fixed; inset:0; display:none; z-index:2000}
.modal[aria-hidden="false"]{display:block}
.modal__backdrop{position:absolute; inset:0; background: rgba(0,0,0,.62); backdrop-filter: blur(6px)}
.modal__panel{
  position:relative;
  width:min(720px, calc(100% - 24px));
  margin: 70px auto 0;
  border-radius: var(--radius2);
  border:1px solid rgba(255,255,255,.14);
  background: rgba(15,18,30,.92);
  box-shadow: var(--shadow);
  padding:16px;
}
.modal__head{display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:6px}
.iconBtn{
  width:40px; height:40px; border-radius: 14px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
}

.calc{display:grid; grid-template-columns: 1fr 1fr; gap:10px; margin-top:12px}
.calc__out{
  grid-column:1/-1;
  display:grid; grid-template-columns: repeat(4, minmax(0,1fr));
  gap:10px;
  padding:12px;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
}
.calc__kpi{display:flex; flex-direction:column; gap:6px; font-size:12.5px}
.calc__kpi b{font-size:14px}

/* Sticky CTA on scroll */
.stickyCta{
  position:fixed; left:0; right:0; bottom:16px;
  display:flex; justify-content:center;
  pointer-events:none;
  opacity:0;
  transform: translateY(12px);
  transition: opacity .2s ease, transform .2s ease;
  z-index:1500;
}
.stickyCta--show{
  opacity:1;
  transform: translateY(0);
}
.stickyCta__inner{
  pointer-events:auto;
  width:min(var(--container), calc(100% - 24px));
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:12px 12px;
  border-radius: 18px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(15,18,30,.80);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow2);
}
.stickyCta__text{font-size:13.5px; color:rgba(234,240,255,.86)}

/* Reveal */
.reveal{opacity:0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease}
.reveal.is-in{opacity:1; transform: translateY(0)}

/* Responsive */
@media (max-width: 980px){
  .hero__inner{grid-template-columns: 1fr; gap:20px}
  .cards{grid-template-columns: 1fr 1fr}
  .cases{grid-template-columns: 1fr}
  .steps{grid-template-columns: 1fr 1fr}
  .pricing{grid-template-columns: 1fr}
  .grid2{grid-template-columns: 1fr; gap:16px}
  .contact{grid-template-columns: 1fr}
}
@media (max-width: 720px){
  .section{padding:72px 0}
  .hero{padding:56px 0 70px}
  .hero__trust{grid-template-columns: 1fr; gap:10px}
  .gridMini{grid-template-columns: 1fr 1fr}
  .calc{grid-template-columns: 1fr}
  .calc__out{grid-template-columns: 1fr 1fr}
  .form__row{grid-template-columns: 1fr}
  .ctaStrip{flex-direction:column; align-items:flex-start}
  .nav__toggle{display:inline-flex}
  .nav__menu{
    position:absolute; right:0; top:54px;
    width:min(340px, calc(100vw - 24px));
    flex-direction:column; align-items:stretch; gap:6px;
    padding:10px;
    border-radius: 18px;
    border:1px solid rgba(255,255,255,.12);
    background: rgba(15,18,30,.86);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow2);
    display:none;
  }
  .nav__menu.is-open{display:flex}
  .nav__link{justify-content:flex-start}
}

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