:root {
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --text: #3f404b;
  --muted: #6f7482;
  --line: rgba(70, 74, 87, 0.12);
  --line-strong: rgba(70, 74, 87, 0.2);
  --accent: #1293d1;
  --accent-deep: #0d7fb5;
  --accent-soft: rgba(18, 147, 209, 0.12);
  --shadow: 0 24px 60px rgba(29, 50, 74, 0.12);
  --shadow-soft: 0 16px 40px rgba(29, 50, 74, 0.08);
  --radius: 24px;
  --radius-sm: 16px;
  --container: 1220px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ease: 220ms cubic-bezier(.2,.8,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(circle at 10% 10%, rgba(18, 147, 209, 0.08), transparent 28%),
    radial-gradient(circle at 90% 20%, rgba(63, 64, 75, 0.06), transparent 24%),
    linear-gradient(180deg, #ffffff 0%, #f7f9fc 48%, #ffffff 100%);
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: #111;
  color: #fff;
  padding: 8px 12px;
  border-radius: 10px;
  z-index: 1000;
}
.skip-link:focus { top: 12px; }

.site-shell {
  position: relative;
  isolation: isolate;
}

.site-shell::before,
.site-shell::after {
  content: "";
  position: fixed;
  inset: auto;
  width: 42vw;
  height: 42vw;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.2;
  pointer-events: none;
  z-index: -1;
}
.site-shell::before {
  top: -18vw;
  right: -8vw;
  background: rgba(18, 147, 209, 0.14);
}
.site-shell::after {
  bottom: -20vw;
  left: -12vw;
  background: rgba(98, 102, 120, 0.12);
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.glass {
  background: var(--surface);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: var(--shadow-soft);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 14px 0;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-radius: 20px;
  padding: 14px 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.brand img {
  width: 180px;
  height: auto;
}
.brand small {
  display: block;
  color: var(--muted);
  letter-spacing: .2em;
  text-transform: uppercase;
  font-size: 10px;
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
}
.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: transform var(--ease), opacity var(--ease);
}
.menu-toggle::before { transform: translateY(-6px); }
.menu-toggle::after { transform: translateY(6px); }
.menu-toggle.is-open span { opacity: 0; }
.menu-toggle.is-open::before { transform: rotate(45deg) translateY(1px); }
.menu-toggle.is-open::after { transform: rotate(-45deg) translateY(-1px); }

.nav-wrap {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 16px;
  right: 16px;
  border-radius: 20px;
  padding: 14px;
}
.nav-wrap.is-open { display: block; }

.main-nav {
  display: grid;
  gap: 8px;
}
.main-nav a {
  padding: 12px 14px;
  border-radius: 14px;
  color: var(--muted);
  font-weight: 500;
}
.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.is-active {
  background: rgba(18, 147, 209, 0.08);
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.8);
  padding: 4px;
  border-radius: 999px;
}
.lang-switch button {
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.lang-switch button.active {
  background: var(--text);
  color: #fff;
}

.cta-mini {
  display: none;
  padding: 11px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  box-shadow: 0 18px 32px rgba(18, 147, 209, 0.24);
}

main { padding-bottom: 60px; }
section { padding: 28px 0; }

.hero {
  padding-top: 36px;
}
.hero-grid {
  display: grid;
  gap: 22px;
  align-items: stretch;
}
.panel {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.85);
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(246,249,252,0.92));
  box-shadow: var(--shadow);
}
.hero-copy {
  padding: 28px;
}
.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(18, 147, 209, 0.08);
  color: var(--accent-deep);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}
.hero h1 {
  margin: 16px 0 14px;
  font-size: clamp(2.2rem, 5vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}
.hero p.lead {
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.12rem);
  max-width: 62ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background var(--ease);
}
.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}
.btn-primary {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}
.btn-secondary {
  background: rgba(255,255,255,0.85);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}
.metric {
  padding: 16px;
  border-radius: 22px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(70,74,87,0.08);
}
.metric strong {
  display: block;
  font-size: 1.5rem;
  letter-spacing: -0.04em;
}
.metric span {
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  min-height: 420px;
  padding: 20px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(160deg, rgba(255,255,255,0.94), rgba(240,246,251,0.9)),
    radial-gradient(circle at 30% 30%, rgba(18,147,209,0.16), transparent 34%);
}
.visual-stage {
  position: relative;
  width: min(100%, 530px);
  aspect-ratio: 1 / 1;
  perspective: 1400px;
}
.orbit,
.floating-card,
.city-card,
.glow-ring {
  position: absolute;
}
.glow-ring {
  inset: 12%;
  border-radius: 50%;
  border: 1px solid rgba(18,147,209,0.22);
  box-shadow: inset 0 0 50px rgba(18,147,209,0.08), 0 0 60px rgba(18,147,209,0.06);
  animation: spin 26s linear infinite;
}
.orbit {
  inset: 5%;
  border-radius: 50%;
  border: 1px dashed rgba(63,64,75,0.12);
  animation: spinReverse 34s linear infinite;
}
.floating-card,
.city-card {
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(243,248,252,0.95));
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow);
  transform-style: preserve-3d;
}
.floating-card {
  width: 230px;
  padding: 18px;
}
.floating-card h3,
.city-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
}
.floating-card p,
.city-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.card-a { top: 8%; left: 2%; animation: floatY 8s ease-in-out infinite; }
.card-b { top: 52%; left: -2%; animation: floatY 9.5s ease-in-out infinite 0.8s; }
.card-c { top: 18%; right: -2%; animation: floatY 8.8s ease-in-out infinite 1.1s; }
.city-card {
  bottom: 4%;
  right: 8%;
  width: 250px;
  padding: 0;
  overflow: hidden;
  animation: floatY 11s ease-in-out infinite 0.3s;
}
.city-card img { aspect-ratio: 16 / 10; object-fit: cover; }
.city-card .inner { padding: 16px; }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.8vw, 2.6rem);
  letter-spacing: -0.04em;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 72ch;
}

.grid,
.cards,
.story-grid,
.contact-grid,
.process-grid,
.geo-grid,
.showcase-grid,
.feature-grid,
.value-grid,
.kpi-grid,
.gallery-grid,
.service-grid,
.sector-grid {
  display: grid;
  gap: 16px;
}
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.cards-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  position: relative;
  overflow: hidden;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(246,249,252,0.92));
  border: 1px solid rgba(255,255,255,0.88);
  box-shadow: var(--shadow-soft);
}
.card::after {
  content: "";
  position: absolute;
  inset: auto -30% -50% auto;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(18,147,209,0.09), transparent 70%);
  pointer-events: none;
}
.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); }
.card ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.card li + li { margin-top: 6px; }
.card.tilt {
  transition: transform var(--ease), box-shadow var(--ease);
  transform-style: preserve-3d;
}
.card.tilt:hover { box-shadow: var(--shadow); }

.media-card {
  padding: 0;
  overflow: hidden;
}
.media-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.media-card .inner { padding: 18px 20px 20px; }
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(18,147,209,0.08);
  color: var(--accent-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.story-grid { grid-template-columns: 1.2fr 0.8fr; }
.kpi-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.showcase-grid { grid-template-columns: 1.05fr 0.95fr; }
.feature-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.value-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.gallery-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.service-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.sector-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.process-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.geo-grid { grid-template-columns: 1fr 1fr; }
.contact-grid { grid-template-columns: 0.95fr 1.05fr; }

.kpi {
  text-align: left;
  padding: 22px;
}
.kpi strong {
  display: block;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -0.05em;
  margin-bottom: 4px;
}
.kpi span { color: var(--muted); }

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(18,147,209,0.16), rgba(18,147,209,0.06));
  margin-bottom: 14px;
}
.feature-icon svg { width: 24px; height: 24px; color: var(--accent-deep); }

.timeline {
  display: grid;
  gap: 12px;
}
.timeline-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.78);
}
.timeline-item strong {
  color: var(--accent-deep);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.timeline-item h3 { margin: 0 0 6px; font-size: 1rem; }
.timeline-item p { margin: 0; color: var(--muted); }

.quote-panel {
  padding: 24px;
  background: linear-gradient(135deg, rgba(18,147,209,0.1), rgba(255,255,255,0.92));
}
.quote-panel blockquote {
  margin: 0;
  font-size: clamp(1.15rem, 2.2vw, 1.7rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}
.quote-panel p {
  margin: 14px 0 0;
  color: var(--muted);
}

.cta-band {
  padding: 26px;
  border-radius: 30px;
  background: linear-gradient(135deg, #3f404b 0%, #4e5160 44%, #1293d1 100%);
  color: #fff;
  box-shadow: var(--shadow);
}
.cta-band .cta-wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.cta-band p { margin: 0; color: rgba(255,255,255,0.8); }
.cta-band .btn-secondary {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.22);
  color: #fff;
}

.map-card img,
.gallery-grid img,
.showcase-grid img,
.contact-grid img {
  width: 100%;
  object-fit: cover;
}
.gallery-grid .card,
.gallery-grid .media-card { padding: 0; }
.gallery-grid img { aspect-ratio: 4 / 3; }

.contact-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}
.contact-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
}
.contact-item .feature-icon { margin: 0; }
.contact-item h3 { margin: 0 0 4px; font-size: 1rem; }
.contact-item p, .contact-item a { margin: 0; color: var(--muted); }

.footer {
  padding: 30px 0 50px;
}
.footer-grid {
  display: grid;
  gap: 18px;
  align-items: center;
  border-radius: 24px;
  padding: 20px;
}
.footer small,
.footer p { color: var(--muted); }
.footer p { margin: 0; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
}
.footer-nav a:hover { color: var(--accent-deep); }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes spin { from { transform: rotate(0deg);} to { transform: rotate(360deg);} }
@keyframes spinReverse { from { transform: rotate(360deg);} to { transform: rotate(0deg);} }
@keyframes floatY {
  0%, 100% { transform: translateY(0px) rotateX(0deg) rotateY(0deg); }
  50% { transform: translateY(-14px) rotateX(4deg) rotateY(-4deg); }
}

[data-lang] { display: none; }
html[lang-mode="ru"] [data-lang="ru"],
html[lang-mode="en"] [data-lang="en"] { display: revert; }

@media (min-width: 920px) {
  .site-header { padding: 18px 0; }
  .menu-toggle { display: none; }
  .nav-wrap {
    position: static;
    display: block !important;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }
  .header-bar { gap: 24px; }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .cta-mini { display: inline-flex; }
  .hero-grid { grid-template-columns: 1.08fr 0.92fr; }
  .cta-band .cta-wrap {
    flex-direction: row;
    align-items: end;
    justify-content: space-between;
  }
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr;
    justify-content: space-between;
  }
}

@media (max-width: 1080px) {
  .story-grid,
  .showcase-grid,
  .feature-grid,
  .value-grid,
  .gallery-grid,
  .service-grid,
  .sector-grid,
  .process-grid,
  .geo-grid,
  .contact-grid,
  .kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  body { font-size: 14px; }
  .brand img { width: 150px; }
  .hero-copy { padding: 24px; }
  .hero-metrics { grid-template-columns: 1fr; }
  .story-grid,
  .showcase-grid,
  .feature-grid,
  .value-grid,
  .gallery-grid,
  .service-grid,
  .sector-grid,
  .process-grid,
  .geo-grid,
  .contact-grid,
  .kpi-grid {
    grid-template-columns: 1fr;
  }
  .timeline-item { grid-template-columns: 1fr; }
  .card-a, .card-b, .card-c, .city-card { position: relative; top: auto; left: auto; right: auto; bottom: auto; width: 100%; }
  .visual-stage { display: grid; gap: 14px; aspect-ratio: auto; }
  .glow-ring, .orbit { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}