:root{
  --bg:#070a10;
  --surface:#0f1624;
  --surface-2:#141d2c;
  --surface-3:#182235;
  --text:#f6f8fb;
  --muted:#9aa7ba;
  --muted-2:#c7d0dd;
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.2);
  --blue:#6aa5ff;
  --green:#42d99a;
  --violet:#9a7cff;
  --radius:22px;
  --shadow:0 28px 90px rgba(0,0,0,.34);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
html,body{max-width:100%;overflow-x:hidden}
body{
  margin:0;
  padding-top:65px;
  font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 18% 0%,rgba(64,105,176,.28),transparent 32rem),
    radial-gradient(circle at 92% 14%,rgba(66,217,154,.1),transparent 28rem),
    linear-gradient(180deg,#080b12 0%,#070a10 42%,#090c13 100%);
  word-break:normal;
  overflow-wrap:break-word;
}
a{color:inherit;text-decoration:none}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,p{margin:0}
h1{max-width:760px;margin:18px 0 18px;font-size:clamp(38px,4.2vw,54px);line-height:1.04;letter-spacing:-.038em}
h2{margin-top:18px;font-size:clamp(32px,4.4vw,58px);line-height:1;letter-spacing:-.04em}
h3{font-size:clamp(28px,3vw,46px);line-height:1.04;letter-spacing:-.035em}

.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:20;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 28px;
  background:rgba(7,10,16,.78);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);
}
.brand{display:flex;align-items:center;gap:12px;font-weight:850;white-space:nowrap}
.brand-mark{
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:10px;
  color:#06111d;
  background:linear-gradient(135deg,var(--blue),var(--green));
  font-weight:900;
  letter-spacing:-.06em;
}
.site-nav{display:flex;align-items:center;gap:6px}
.site-nav a{padding:10px 13px;border-radius:999px;color:var(--muted);font-size:14px;font-weight:650}
.site-nav a:hover,.site-nav a.active,.nav-cta{color:var(--text)!important;background:rgba(255,255,255,.08)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.06);color:var(--text)}
.nav-toggle span{display:block;width:18px;height:2px;margin:4px auto;border-radius:999px;background:currentColor}

.section{max-width:1240px;margin:0 auto;padding:88px 24px}
.hero{display:grid;grid-template-columns:minmax(0,1.16fr) minmax(300px,.54fr);gap:38px;align-items:center;min-height:86vh;padding-top:56px;padding-bottom:56px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  width:max-content;
  max-width:100%;
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  color:#c1cce0;
  background:rgba(255,255,255,.04);
  font-size:12px;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.08em;
}
.lead{max-width:680px;color:#cbd5e3;font-size:18px;line-height:1.5}
.hero-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:14px 20px;border-radius:12px;font-weight:850}
.primary{color:#07111e;background:var(--text)}
.ghost{border:1px solid var(--line);color:#e4ebf6;background:rgba(255,255,255,.03)}
.hero-proof{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.hero-proof span{padding:9px 12px;border:1px solid var(--line);border-radius:999px;color:#d9e2ef;background:rgba(255,255,255,.045);font-size:13px;font-weight:750}
.hero-card{position:relative;display:grid;justify-self:end;gap:14px;width:100%;max-width:360px;min-height:0;padding:16px;border:1px solid var(--line);border-radius:24px;overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));box-shadow:var(--shadow)}
.hero-card::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 4%,rgba(106,165,255,.18),transparent 15rem);pointer-events:none}
.hero-card>*{position:relative}
.hero-portrait{aspect-ratio:1/1;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#111827}
.hero-portrait img{width:100%;height:100%;object-fit:cover;object-position:center 18%}
.hero-note{display:flex;justify-content:space-between;gap:16px;padding:16px;border:1px solid rgba(255,255,255,.16);border-radius:16px;background:rgba(7,10,16,.62);backdrop-filter:blur(16px)}
.hero-note span{color:var(--muted)}
.hero-summary{display:grid;gap:7px;padding:16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.045)}
.hero-summary span{font-size:26px;font-weight:900;letter-spacing:-.04em}
.hero-summary p{color:#cbd5e3;line-height:1.42}

.company-strip{display:grid;gap:8px;margin-top:16px;padding:10px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.04);backdrop-filter:blur(14px)}
.company-logos{display:flex;align-items:stretch;gap:8px;width:100%}
.logo-chip{display:grid;place-items:center;flex:1 1 0;min-width:0;min-height:50px;padding:7px 10px;border:1px solid rgba(255,255,255,.1);border-radius:12px;background:rgba(255,255,255,.94)}
.logo-chip:nth-child(2),.logo-chip:nth-child(3){flex-grow:1.55}
.logo-chip:nth-child(4),.logo-chip:nth-child(5),.logo-chip:nth-child(6){flex-grow:1.18}
.logo-chip img{width:100%;max-width:100%;max-height:34px;object-fit:contain}
.logo-chip img[src$=".gif"]{max-height:38px}
.ai-note{margin-top:8px;color:#8f9bad;font-size:11px;line-height:1.35}

.section-head{max-width:780px;margin-bottom:34px}
.impact-head{max-width:980px}
.impact-head h2{font-size:clamp(32px,3.7vw,52px)}
.section-head.wide{display:block;max-width:820px}
.section-head.wide .eyebrow{margin-bottom:14px}
.section-head p{color:var(--muted-2);line-height:1.6}

.metrics-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.metric-card{
  min-height:178px;
  padding:24px;
  border:1px solid var(--line);
  border-radius:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.035));
  overflow:hidden;
}
.metric-card span{display:block;font-size:clamp(30px,3.4vw,42px);font-weight:900;line-height:1;letter-spacing:-.05em;white-space:nowrap}
.metric-card p{margin-top:12px;color:var(--muted);line-height:1.4}
.metric-card.accent{background:linear-gradient(135deg,rgba(106,165,255,.32),rgba(66,217,154,.12));border-color:rgba(106,165,255,.38)}

.projects-section{padding-top:42px}
.project-nav{
  position:sticky;
  top:66px;
  z-index:12;
  display:flex;
  gap:8px;
  margin:0 0 24px;
  padding:9px;
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(8,11,18,.82);
  backdrop-filter:blur(18px);
  scrollbar-width:none;
}
.project-nav::-webkit-scrollbar{display:none}
.project-nav a{flex:0 0 auto;padding:10px 14px;border-radius:999px;color:#c9d4e5;background:rgba(255,255,255,.055);font-size:14px;font-weight:800;white-space:nowrap}
.project-nav a:hover,.project-nav a.active{color:#06111e;background:linear-gradient(135deg,var(--blue),var(--green))}

.case-card{
  margin-top:28px;
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(255,255,255,.045);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.case-hero{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(180px,220px);
  align-items:stretch;
  gap:30px;
  min-height:350px;
  padding:34px;
  border-radius:18px;
  background:radial-gradient(circle at 82% 12%,rgba(106,165,255,.3),transparent 32%),linear-gradient(135deg,#0a1220,#14233a);
  overflow:hidden;
}
.case-hero.light{color:#111827;background:linear-gradient(135deg,#f3f7ff,#cbdcf5)}
.case-hero.gas{background:radial-gradient(circle at 78% 10%,rgba(66,217,154,.28),transparent 34%),linear-gradient(135deg,#102036,#0c5744)}
.case-hero.anylogic{background:radial-gradient(circle at 78% 12%,rgba(154,124,255,.34),transparent 34%),linear-gradient(135deg,#151127,#332455)}
.case-hero.itmo{background:radial-gradient(circle at 80% 10%,rgba(154,124,255,.36),transparent 34%),linear-gradient(135deg,#111827,#282f75)}
.case-label{display:inline-flex;max-width:100%;margin-bottom:14px;color:#cfe0ff;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.08em;white-space:normal;overflow-wrap:anywhere}
.light .case-label{color:#315178}
.case-hero h3{max-width:820px}
.case-hero p{max-width:820px;margin-top:14px;color:#c6d1e2;font-size:18px;line-height:1.48}
.light p{color:#39465a}
.case-stats{display:grid;grid-template-columns:1fr;grid-template-rows:repeat(3,1fr);align-self:stretch;gap:10px;width:100%;max-width:220px}
.case-stats div{display:flex;flex-direction:column;justify-content:space-between;min-width:0;min-height:0;padding:15px 14px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.1);backdrop-filter:blur(12px);overflow:hidden}
.light .case-stats div{background:rgba(255,255,255,.6)}
.case-stats strong{display:block;font-size:clamp(20px,1.8vw,24px);line-height:1;letter-spacing:-.035em;white-space:nowrap}
.case-stats span{display:block;margin-top:8px;color:#b8c4d8;font-size:12px;line-height:1.18}
.light .case-stats span{color:#526174}

.case-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:18px 0}
.info-block{
  padding:22px;
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(255,255,255,.045);
  overflow:hidden;
}
.info-block h4,.carousel-head h4{margin:0 0 12px;color:#aebbd0;font-size:13px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}
.info-block p,.info-block li{color:#d4dce8;line-height:1.52}
.info-block ul{margin:0;padding-left:18px}
.info-block li+li{margin-top:6px}

.module-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}
.module-grid div{padding:18px;border:1px solid var(--line);border-radius:16px;background:#0b1220}
.module-grid span{font-weight:900}
.module-grid p{margin-top:8px;color:var(--muted);font-size:14px;line-height:1.4}
.case-actions{display:flex;justify-content:flex-end;margin:-4px 0 18px}
.external-link{width:auto;min-height:44px;background:rgba(255,255,255,.055)}

.carousel-wrap{position:relative;margin-top:18px}
.carousel-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:12px}
.carousel-head span{color:var(--muted);font-size:14px}
.carousel{
  display:flex;
  gap:16px;
  width:100%;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scroll-snap-type:x mandatory;
  scroll-padding:4px;
  padding:4px 4px 18px;
  scrollbar-color:#52627a transparent;
}
.carousel figure{
  flex:0 0 min(920px,calc(100vw - 96px));
  max-width:min(920px,calc(100vw - 96px));
  margin:0;
  border:1px solid var(--line);
  border-radius:18px;
  background:#070b12;
  overflow:hidden;
  scroll-snap-align:start;
}
.carousel img{
  width:100%;
  height:clamp(330px,46vw,620px);
  object-fit:contain;
  object-position:center;
  padding:12px;
  background:radial-gradient(circle at 50% 20%,rgba(255,255,255,.055),transparent 48%),#070b12;
}
.carousel figcaption{padding:14px 16px;color:#cbd6e6;font-weight:750;line-height:1.35}
.carousel-controls{display:flex;justify-content:flex-end;gap:8px}
.carousel-controls button{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--text);
  background:rgba(255,255,255,.08);
  font-size:18px;
  cursor:pointer;
}
.carousel-controls button:hover{background:rgba(255,255,255,.14)}

.itmo-section{padding-top:24px}
.education-card{margin-top:0}
.compact .case-hero{min-height:260px}
.award-grid{display:grid;grid-template-columns:.8fr 1fr 1fr;gap:16px;align-items:stretch}
.award-copy{padding:24px;border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.05);line-height:1.58}
.muted{margin-top:16px;color:var(--muted)!important}
.award-grid img{width:100%;height:100%;min-height:300px;object-fit:cover;border:1px solid var(--line);border-radius:20px}
.about-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.about-card{padding:22px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.05);overflow:hidden}
.about-card h3{font-size:20px;line-height:1.12;letter-spacing:-.015em}
.about-card p{margin-top:12px;color:var(--muted);line-height:1.45}
.contact-section{display:grid;grid-template-columns:1.2fr .62fr;gap:24px;align-items:center}
.contact-card{padding:24px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,rgba(106,165,255,.18),rgba(255,255,255,.05));line-height:1.7}
.contact-card a{display:inline-block;margin-top:10px;color:#9bc0ff;font-weight:900}

.case-card,.metric-card,.about-card,.award-grid img{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.case-card.visible,.metric-card.visible,.about-card.visible,.award-grid img.visible{opacity:1;transform:none}

@media (max-width:1040px){
  .metrics-grid,.about-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-hero{grid-template-columns:1fr;align-items:flex-start}
  .case-stats{grid-template-columns:repeat(3,minmax(0,1fr));max-width:none;width:100%}
}

@media (max-width:900px){
  html{scroll-padding-top:84px}
  .site-header{padding:12px 14px}
  .brand span:last-child{display:none}
  .nav-toggle{display:block;flex:0 0 auto}
  .site-nav{
    position:absolute;
    top:62px;
    left:12px;
    right:12px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    padding:10px;
    border:1px solid var(--line);
    border-radius:16px;
    background:#0d1320;
    box-shadow:var(--shadow);
  }
  .site-nav.open{display:flex}
  .site-nav a{padding:13px 14px;font-size:15px}
  .section{padding:62px 14px}
  .hero{grid-template-columns:1fr;gap:28px;min-height:auto;padding-top:54px}
  h1{font-size:44px;line-height:1;letter-spacing:-.04em}
  h2{letter-spacing:-.03em}
  .lead{font-size:17px}
  .hero-actions{flex-direction:column}
  .button{width:100%}
  .hero-card{max-width:430px;width:100%;margin:0 auto;border-radius:22px}
  .hero-note{flex-direction:column}
  .company-strip{grid-template-columns:1fr;gap:12px;margin-top:0}
  .company-logos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
  .section-head.wide,.contact-section{display:block}
  .section-head.wide .eyebrow{margin-bottom:14px}
  .project-nav{top:61px;margin-left:-2px;margin-right:-2px}
  .case-card{padding:12px;border-radius:18px}
  .case-hero{min-height:auto;padding:22px;border-radius:14px;gap:18px}
  .case-label{font-size:11px;line-height:1.25;letter-spacing:.05em}
  .case-hero h3{font-size:30px;line-height:1.04}
  .case-hero p{font-size:15px;line-height:1.42}
  .case-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .case-stats div{min-width:0;padding:12px 8px;border-radius:13px}
  .case-stats strong{font-size:20px}
  .case-stats span{font-size:10px}
  .case-columns,.metrics-grid,.module-grid,.about-grid,.award-grid{grid-template-columns:1fr}
  .info-block{padding:18px;border-radius:14px}
  .info-block p,.info-block li{font-size:15px}
  .carousel-head{align-items:flex-start;flex-direction:column;gap:4px}
  .carousel-head span,.carousel figcaption{display:none}
  .case-actions{justify-content:stretch}
  .case-actions .button{width:100%}
  .carousel{gap:12px;padding-bottom:12px}
  .carousel figure{flex-basis:86vw;max-width:86vw;border-radius:14px}
  .carousel img{height:min(58vh,420px);padding:6px}
  .award-grid img{min-height:240px}
  .contact-card{margin-top:22px}
}

@media (max-width:520px){
  .section{padding-top:56px}
  h1{font-size:38px}
  .hero-card{min-height:0}
  .company-logos{grid-template-columns:repeat(2,minmax(0,1fr))}
  .logo-chip{min-height:54px}
  .metric-card{min-height:auto;padding:20px}
  .metric-card span{font-size:34px}
  .case-stats{grid-template-columns:1fr}
  .project-nav a{padding:9px 12px;font-size:13px}
  .carousel figure{flex-basis:84vw;max-width:84vw}
}

@media (max-width:390px){
  h1{font-size:34px}
  .case-stats{grid-template-columns:1fr}
  .case-stats strong{font-size:26px}
  .case-stats span{font-size:12px}
}