:root {
  --bg: #0b0c10;
  --bg-soft: #11131a;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.075);
  --text: #f5f7fb;
  --muted: #a2a8b6;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #2f6bff;
  --accent-soft: rgba(47, 107, 255, 0.22);
  --header-h: 76px;
  --content-w: 1180px;
  --page-pad: clamp(20px, 4vw, 54px);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button { font: inherit; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 1000;
  padding: 10px 14px;
  background: white;
  color: black;
  border-radius: 10px;
}
.skip-link:focus { top: 16px; }

.ambient {
  position: fixed;
  width: 42vw;
  height: 42vw;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: .12;
  z-index: 0;
}
.ambient-a { top: -24vw; right: -12vw; background: #2f6bff; }
.ambient-b { bottom: -28vw; left: -16vw; background: #6756ff; }

.site-shell {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  z-index: 1;
}

.language-layer {
  width: 100%;
  min-height: 100vh;
}
.language-layer--ru { position: relative; z-index: 1; }
.language-reveal {
  position: absolute;
  inset: 0;
  z-index: 2;
  contain: paint;
  overflow: hidden;
  pointer-events: none;
  transform: translate3d(100%, 0, 0);
}
.language-reveal.is-interactive { pointer-events: auto; }
.language-layer--en {
  min-height: 100%;
  transform: translate3d(-100%, 0, 0);
}
html[data-initial-lang="en"] .language-reveal,
html[data-initial-lang="en"] .language-layer--en {
  transform: translate3d(0, 0, 0);
}

.page {
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(255,255,255,.012), transparent 35%),
    var(--bg);
}

.container {
  width: min(var(--content-w), calc(100% - (var(--page-pad) * 2)));
  margin-inline: auto;
}

.header {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  /* This header lives inside both full-page language layers. An opaque fill is
     considerably cheaper than backdrop sampling while either layer moves. */
  background: rgba(11, 12, 16, .90);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  font-weight: 760;
  letter-spacing: -.03em;
  text-decoration: none;
}
.nav { display: flex; gap: clamp(14px, 2.5vw, 34px); }
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 160ms ease;
}
.nav a:hover, .nav a:focus-visible { color: var(--text); }

.hero {
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: center;
  padding: clamp(70px, 10vw, 130px) 0;
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(250px, .7fr);
  gap: clamp(44px, 8vw, 110px);
  align-items: center;
}
.eyebrow, .kicker {
  color: #83a5ff;
  font-size: 12px;
  line-height: 1;
  letter-spacing: .18em;
  font-weight: 720;
}
.hero h1 {
  margin: 18px 0 22px;
  font-size: clamp(58px, 8.4vw, 124px);
  line-height: .88;
  letter-spacing: -.065em;
  max-width: 900px;
}
.hero__lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.55;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 670;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.button:hover { transform: translateY(-2px); }
.button--primary { background: var(--text); color: #0b0c10; border-color: transparent; }
.button--ghost { background: var(--surface); }

.hero__visual {
  aspect-ratio: .78;
  max-height: 520px;
  border: 1px solid var(--line);
  border-radius: 34px;
  overflow: hidden;
  position: relative;
  background:
    radial-gradient(circle at 72% 18%, rgba(83,123,255,.46), transparent 34%),
    linear-gradient(145deg, #161923, #0d0f14 64%);
}
.hero__visual::before,
.hero__visual::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 50%;
}
.hero__visual::before { width: 72%; aspect-ratio: 1; left: -30%; top: 18%; }
.hero__visual::after { width: 58%; aspect-ratio: 1; right: -25%; bottom: 10%; }
.hero__visual-code {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(8,9,12,.74);
  color: #cbd6f3;
  font: 12px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace;
}
.hero__visual-code strong { color: #fff; }

.section {
  padding: clamp(86px, 11vw, 150px) 0;
  border-top: 1px solid var(--line);
}
.section__head {
  display: grid;
  grid-template-columns: minmax(120px, .35fr) minmax(0, 1.65fr);
  gap: 40px;
  align-items: start;
}
.section h2 {
  margin: 0;
  font-size: clamp(36px, 5.4vw, 72px);
  line-height: 1.02;
  letter-spacing: -.045em;
}
.section__body {
  margin: 40px 0 0 max(160px, 18%);
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.7;
}

.chips { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 46px; }
.chip {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: #d9deea;
  font-size: 14px;
}

.project-list { margin-top: 54px; }
.project-card {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) auto;
  gap: 28px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.project-card:last-child { border-bottom: 1px solid var(--line); }
.project-card__num { color: #788093; font: 12px/1 ui-monospace, monospace; padding-top: 8px; }
.project-card h3 { margin: 0 0 10px; font-size: clamp(26px, 3vw, 38px); letter-spacing: -.035em; }
.project-card p { margin: 0; max-width: 680px; color: var(--muted); line-height: 1.65; }
.project-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.project-card__tag { color: #9eb6f7; font-size: 12px; }
.project-card__status { color: #7e8594; font-size: 12px; text-align: right; padding-top: 8px; }

.contacts__links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 42px; }
.contact-link[aria-disabled="true"] { opacity: .44; cursor: default; pointer-events: none; }
.contact-note { margin-top: 22px; max-width: 650px; color: #7f8796; font-size: 13px; line-height: 1.6; }

.footer { padding: 30px 0 90px; border-top: 1px solid var(--line); color: #767e8d; font-size: 13px; }

.language-ui { position: fixed; inset: 0; pointer-events: none; z-index: 50; }
.language-edge {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  z-index: 53;
  width: 48px;
  min-height: 44px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  background: rgba(11,12,16,.70);
  color: var(--text);
  backdrop-filter: blur(14px);
  pointer-events: auto;
  cursor: grab;
  user-select: none;
  touch-action: pan-y;
  font-size: 12px;
  font-weight: 780;
  letter-spacing: .08em;
  transition: opacity 160ms ease, border-color 160ms ease, background 160ms ease;
}
.language-edge:active { cursor: grabbing; }
.language-edge:hover, .language-edge:focus-visible { border-color: rgba(255,255,255,.46); outline: none; }
.language-edge.is-active { background: rgba(255,255,255,.10); cursor: default; }
.language-edge.is-drag-source { opacity: .28; }
.language-edge--ru { left: max(18px, env(safe-area-inset-left)); }
.language-edge--en { right: max(18px, env(safe-area-inset-right)); }

.language-ghost {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  left: 0;
  z-index: 55;
  width: 48px;
  min-height: 44px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #f3f6ff;
  color: #0b0c10;
  font-size: 12px;
  font-weight: 820;
  letter-spacing: .08em;
  opacity: 0;
  transform: translate3d(0, 0, 0);
  will-change: transform, opacity;
  pointer-events: none;
  box-shadow: 0 12px 40px rgba(0,0,0,.32);
}
.language-ghost.is-visible { opacity: 1; }

.curtain-divider {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  z-index: 52;
  background: rgba(255,255,255,.5);
  opacity: 0;
  pointer-events: none;
  will-change: transform, opacity;
}
.curtain-divider.is-visible { opacity: 1; }

.drag-hint {
  position: fixed;
  right: 75px;
  top: max(31px, calc(env(safe-area-inset-top) + 13px));
  color: #717988;
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  opacity: .8;
  transition: opacity 220ms ease;
}
body[data-lang="en"] .drag-hint { right: auto; left: 75px; }
body.has-used-curtain .drag-hint { opacity: 0; }

body.is-curtain-moving .language-reveal { pointer-events: none; }

.noscript { position: fixed; bottom: 12px; left: 12px; right: 12px; z-index: 100; padding: 12px; background: #fff; color: #111; border-radius: 12px; text-align: center; }

@media (max-width: 860px) {
  :root { --header-h: 68px; }
  .nav { display: none; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { max-height: none; width: min(82vw, 420px); }
  .section__head { grid-template-columns: 1fr; gap: 22px; }
  .section__body { margin-left: 0; }
  .project-card { grid-template-columns: 42px 1fr; }
  .project-card__status { grid-column: 2; text-align: left; padding-top: 0; }
}

@media (max-width: 560px) {
  :root { --page-pad: 20px; }
  .hero { padding-top: 92px; }
  .hero h1 { font-size: clamp(52px, 17vw, 78px); }
  .hero__lead { font-size: 17px; }
  .hero__visual { width: 100%; border-radius: 26px; }
  .section { padding: 82px 0; }
  .section h2 { font-size: 38px; }
  .section__body { font-size: 17px; margin-top: 28px; }
  .project-card { padding: 28px 0; gap: 14px; }
  .language-edge--ru { left: max(14px, env(safe-area-inset-left)); }
  .language-edge--en { right: max(14px, env(safe-area-inset-right)); }
  .drag-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; }
  .language-ghost { display: none; }
  .curtain-divider span { display: none; }
}