:root{
  --paper:#F5F6F4;
  --paper-2:#EDEFEB;
  --ink:#10171B;
  --ink-soft:#4A5459;
  --blueprint:#123C55;
  --blueprint-2:#1B4E6E;
  --signal:#2FA8A0;
  --alert:#E2963A;
  --line:#D7DBD8;
  --line-strong:#AEB6B1;
  --white:#FFFFFF;

  --font-display:'Space Grotesk', sans-serif;
  --font-body:'IBM Plex Sans', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;

  --maxw:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%;}
html,body{overflow-x:hidden;max-width:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3{font-family:var(--font-display);margin:0;font-weight:600;letter-spacing:-0.01em;}
p{margin:0;}

.section__inner{max-width:var(--maxw);margin:0 auto;padding:0 32px;}

@media (max-width:480px){
  .section__inner{padding:0 18px;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
}

:focus-visible{outline:2px solid var(--blueprint); outline-offset:3px;}

/* ---------- Ticker ---------- */
.ticker{
  background:var(--ink);
  color:var(--paper);
  overflow:hidden;
  white-space:nowrap;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.06em;
  padding:6px 0;
}
.ticker__track{
  display:inline-block;
  padding-left:100%;
  animation:ticker 38s linear infinite;
}
.ticker__track span{margin:0 14px; opacity:0.85;}
@keyframes ticker{
  0%{transform:translateX(0);}
  100%{transform:translateX(-50%);}
}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(245,246,244,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;padding:14px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav__logo{height:38px;width:auto;}
.nav__links{display:flex;gap:28px;font-size:14px;font-weight:500;}
.nav__links a{color:var(--ink-soft);transition:color .15s;}
.nav__links a:hover{color:var(--blueprint);}
.nav__right{display:flex;align-items:center;gap:18px;}
.nav__phone{font-family:var(--font-mono);font-size:13px;color:var(--ink-soft);}
.lang-switch{display:flex;border:1px solid var(--line-strong);border-radius:4px;overflow:hidden;font-family:var(--font-mono);font-size:12px;}
.lang-btn{
  background:none;border:none;padding:8px 10px;cursor:pointer;color:var(--ink-soft);
  border-right:1px solid var(--line-strong);font-family:var(--font-mono);
  min-height:34px;
}
.lang-btn:last-child{border-right:none;}
.lang-btn.is-active{background:var(--blueprint);color:var(--white);}

@media (max-width:860px){
  .nav__links{display:none;}
  .nav__phone{display:none;}
}

@media (max-width:480px){
  .nav__inner{padding:10px 16px;gap:12px;}
  .nav__logo{height:30px;}
  .lang-btn{padding:7px 8px;font-size:11px;}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;border-radius:4px;font-weight:600;font-size:14px;
  font-family:var(--font-body);
  border:1px solid transparent;transition:all .15s;
}
.btn--primary{background:var(--blueprint);color:var(--white);}
.btn--primary:hover{background:var(--blueprint-2);}
.btn--ghost{border-color:var(--ink);color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--paper);}

/* ---------- Eyebrow ---------- */
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:0.08em;
  color:var(--blueprint);display:flex;align-items:center;gap:8px;margin-bottom:14px;
  text-transform:uppercase;
}
.eyebrow--light{color:var(--signal);}
.eyebrow__mark{font-size:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:40px 40px;
  opacity:0.5;
  mask-image:linear-gradient(to bottom, black, transparent 90%);
}
.hero__inner{
  position:relative;max-width:var(--maxw);margin:0 auto;padding:88px 32px 72px;
  display:grid;grid-template-columns:1.05fr 0.95fr;gap:48px;align-items:center;
}
.hero__title, .hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.06;margin:0 0 22px;}
.hero__subhead{font-size:18px;color:var(--ink-soft);max-width:520px;margin-bottom:34px;}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero__svg{width:100%;height:auto;}
.hud-label{font-family:var(--font-mono);font-size:10px;letter-spacing:0.04em;}

@media (max-width:900px){
  .hero__inner{grid-template-columns:1fr;padding:56px 24px;}
  .hero__visual{order:-1;max-width:340px;margin:0 auto;}
}

@media (max-width:480px){
  .hero__inner{padding:40px 18px 44px;}
  .hero__subhead{font-size:16px;}
  .hero__actions{flex-direction:column;align-items:stretch;}
  .hero__actions .btn{width:100%;}
}

/* ---------- Transition ---------- */
.transition{padding:88px 0;border-bottom:1px solid var(--line);}
.section__title{font-size:clamp(26px,3vw,36px);max-width:720px;margin-bottom:44px;}
.section__title--light{color:var(--white);}
.transition__grid{display:grid;grid-template-columns:1fr auto 1fr;gap:32px;align-items:start;}
.transition__col{
  border:1px solid var(--line);border-radius:6px;padding:28px;
  background:var(--white);
}
.transition__col--active{border-color:var(--blueprint);box-shadow:0 0 0 1px var(--blueprint) inset;}
.transition__label{font-family:var(--font-mono);font-size:12px;text-transform:uppercase;letter-spacing:0.06em;color:var(--ink-soft);margin-bottom:16px;}
.transition__col--active .transition__label{color:var(--blueprint);}
.transition__list li{padding:10px 0;border-top:1px solid var(--line);font-size:15px;}
.transition__list li:first-child{border-top:none;}
.transition__arrow{font-size:28px;color:var(--line-strong);align-self:center;font-family:var(--font-mono);}

@media (max-width:760px){
  .transition__grid{grid-template-columns:1fr;}
  .transition__arrow{transform:rotate(90deg);justify-self:center;}
}

/* ---------- Platform pipeline ---------- */
.platform{padding:88px 0;border-bottom:1px solid var(--line);background:var(--paper-2);}
.pipeline{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  border-top:1px solid var(--line-strong);
}
.pipeline__step{
  padding:24px 20px 0;border-right:1px solid var(--line);position:relative;
}
.pipeline__step:last-child{border-right:none;}
.pipeline__num{
  display:block;font-family:var(--font-mono);font-size:12px;color:var(--blueprint);
  margin-bottom:14px;
}
.pipeline__step h3{font-size:16px;margin-bottom:8px;}
.pipeline__step p{font-size:13.5px;color:var(--ink-soft);line-height:1.45;}
.pipeline__note{margin-top:28px;font-family:var(--font-mono);font-size:12.5px;color:var(--ink-soft);text-align:center;}

@media (max-width:900px){
  .pipeline{grid-template-columns:1fr 1fr;}
  .pipeline__step{border-right:none;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:4px;}
}
@media (max-width:520px){
  .pipeline{grid-template-columns:1fr;}
}

/* ---------- Directions ---------- */
.directions{padding:96px 0;}
.direction-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
}
.direction-card{
  background:var(--white);padding:30px;
  transition:background .15s;
  cursor:pointer;
}
.direction-card:hover{background:var(--paper-2);}
.direction-card:focus-visible{outline:2px solid var(--blueprint);outline-offset:-2px;z-index:1;position:relative;}
.direction-card__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.direction-card__icon{width:34px;height:34px;color:var(--blueprint);}
.direction-card__tag{
  font-family:var(--font-mono);font-size:10.5px;color:var(--signal);
  border:1px solid var(--signal);padding:3px 7px;border-radius:3px;letter-spacing:0.03em;
  white-space:nowrap;
}
.direction-card__tag--solid{color:var(--white);background:var(--blueprint);border-color:var(--blueprint);}
.direction-card--hardware{background:var(--paper-2);}
.direction-card--hardware:hover{background:var(--white);}
.direction-card h3{font-size:19px;margin-bottom:10px;}
.direction-card p{font-size:14px;color:var(--ink-soft);line-height:1.55;margin-bottom:18px;}
.direction-card__chips{display:flex;flex-wrap:wrap;gap:6px;}
.direction-card__chips li{
  font-size:11.5px;font-family:var(--font-mono);color:var(--ink-soft);
  border:1px solid var(--line-strong);border-radius:3px;padding:3px 8px;
}

@media (max-width:900px){
  .direction-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:600px){
  .direction-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .direction-card{padding:22px 18px;}
}

/* ---------- Effect ---------- */
.effect{background:var(--ink);color:var(--white);padding:88px 0;}
.effect__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.effect__stat{border-left:1px solid rgba(255,255,255,0.2);padding-left:20px;}
.effect__num{display:block;font-family:var(--font-display);font-size:clamp(32px,4vw,48px);font-weight:600;color:var(--signal);}
.effect__label{font-size:13.5px;color:rgba(255,255,255,0.7);}

@media (max-width:760px){
  .effect__grid{grid-template-columns:1fr 1fr;row-gap:36px;}
}

/* ---------- Presentations ---------- */
.presentations{padding:88px 0;border-bottom:1px solid var(--line);}
.pres__text{color:var(--ink-soft);font-size:16px;max-width:560px;margin-bottom:32px;}
.pres__buttons{display:flex;gap:14px;flex-wrap:wrap;}
.pres__btn{
  display:flex;align-items:center;gap:10px;
  border:1px solid var(--ink);border-radius:4px;padding:13px 22px;
  font-size:14px;font-weight:600;transition:all .15s;
}
.pres__btn:hover{background:var(--ink);color:var(--paper);}
.pres__btn-lang{
  font-family:var(--font-mono);font-size:11px;border:1px solid currentColor;
  border-radius:3px;padding:2px 6px;
}

@media (max-width:480px){
  .pres__buttons{flex-direction:column;align-items:stretch;}
  .pres__btn{justify-content:center;}
}

/* ---------- Footer ---------- */
.footer{background:var(--paper-2);padding-top:64px;}
.footer__inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:48px;}
.footer__logo{height:40px;margin-bottom:16px;}
.footer__brand p{color:var(--ink-soft);font-size:14px;max-width:280px;}
.footer__contacts{font-size:14px;}
.footer__label{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;color:var(--ink-soft);margin-top:14px;letter-spacing:0.04em;}
.footer__label:first-child{margin-top:0;}
.footer__value{display:block;font-weight:600;margin-top:2px;}
.footer__bottom{
  border-top:1px solid var(--line);padding:18px 32px;
  display:flex;justify-content:space-between;font-size:12.5px;color:var(--ink-soft);
  font-family:var(--font-mono);
}

@media (max-width:600px){
  .footer__bottom{flex-direction:column;gap:6px;}
}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- Presentation modal ---------- */
.pres-modal{
  position:fixed;inset:0;z-index:200;
  display:flex;align-items:center;justify-content:center;
  background:rgba(16,23,27,0.82);
  padding:32px;
  opacity:0;visibility:hidden;
  transition:opacity .2s ease;
}
.pres-modal.is-open{opacity:1;visibility:visible;}
.pres-modal__panel{
  width:100%;max-width:960px;height:calc(100vh - 64px);max-height:860px;
  background:var(--paper);border:1px solid var(--line-strong);border-radius:6px;
  display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 24px 64px rgba(0,0,0,0.35);
  transform:translateY(12px);transition:transform .2s ease;
}
.pres-modal.is-open .pres-modal__panel{transform:none;}
.pres-modal__bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 18px;border-bottom:1px solid var(--line);background:var(--ink);color:var(--paper);
  flex-shrink:0;
}
.pres-modal__label{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:0.06em;color:var(--signal);
  text-transform:uppercase;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.pres-modal__close{
  font-family:var(--font-mono);font-size:12px;letter-spacing:0.03em;
  background:none;border:1px solid rgba(245,246,244,0.4);color:var(--paper);
  padding:6px 12px;border-radius:4px;cursor:pointer;flex-shrink:0;
  transition:all .15s;
}
.pres-modal__close:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.pres-modal__body{position:relative;flex:1;background:var(--paper-2);}
.pres-modal__fallback{
  position:absolute;inset:0;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;text-align:center;padding:32px;
  font-family:var(--font-body);color:var(--ink-soft);
}
.pres-modal__fallback:not([hidden]){display:flex;}
.pres-modal__fallback-mark{font-size:32px;color:var(--alert);font-family:var(--font-mono);}
.pres-modal__fallback p{font-size:15px;max-width:320px;}

@media (max-width:700px){
  .pres-modal{padding:0;}
  .pres-modal__panel{max-width:none;width:100%;height:100%;max-height:none;border-radius:0;}
}

/* ---------- Small-phone tightening ---------- */
@media (max-width:480px){
  .transition,
  .platform,
  .directions,
  .effect,
  .presentations{padding:48px 0;}
}