/* Layout: чертёжная сетка инженера — синие линии на холодной бумаге,
   крупный геометричный заголовок, данные моноширинным шрифтом. */
:root {
  --paper: #f3f6fb;
  --paper-2: #e8eef7;
  --card: #ffffff;
  --ink: #0c1a30;
  --ink-2: #4a5a73;
  --line: #cfd9e8;
  --grid: rgba(20, 76, 201, .07);
  --brand: #1450c8;
  --brand-ink: #ffffff;
  --signal: #0aa3a8;
  --shadow: 0 1px 2px rgba(12, 26, 48, .06), 0 8px 24px rgba(12, 26, 48, .06);

  --f-display: "Unbounded", "Arial Black", system-ui, sans-serif;
  --f-body: "Onest", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --r: 14px;
  --wrap: 1200px;
  --gut: clamp(16px, 4vw, 40px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0a1322; --paper-2: #0f1b2e; --card: #13223a;
    --ink: #e7eefa; --ink-2: #9fb0ca; --line: #22344f;
    --grid: rgba(110, 160, 255, .07);
    --brand: #5b8cff; --brand-ink: #06101f; --signal: #38d1cf;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0a1322; --paper-2: #0f1b2e; --card: #13223a;
  --ink: #e7eefa; --ink-2: #9fb0ca; --line: #22344f;
  --grid: rgba(110, 160, 255, .07);
  --brand: #5b8cff; --brand-ink: #06101f; --signal: #38d1cf;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.25);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 700; line-height: 1.12; margin: 0; text-wrap: balance; letter-spacing: -.01em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.05rem; font-weight: 500; line-height: 1.3; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 6px; }
[hidden] { display: none !important; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.eyebrow {
  font: 500 .75rem/1 var(--f-mono);
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand);
  display: inline-flex; align-items: center; gap: .6em;
}
.eyebrow::before { content: ""; width: 18px; height: 2px; background: currentColor; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .85em 1.4em; border-radius: 999px; border: 1.5px solid var(--brand);
  background: var(--brand); color: var(--brand-ink);
  font: 600 .95rem/1 var(--f-body); text-decoration: none; cursor: pointer;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--brand); }
.btn--ghost:hover { background: var(--brand); color: var(--brand-ink); }
.btn--small { padding: .6em 1.1em; font-size: .85rem; }
.btn--wide { width: 100%; }
.icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 50%; background: var(--card);
  color: var(--ink); cursor: pointer;
}

/* Header */
.topbar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar__row { display: flex; align-items: center; gap: 24px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__mark {
  font: 700 .95rem/1 var(--f-display); letter-spacing: .02em;
  background: var(--brand); color: var(--brand-ink);
  padding: 9px 10px; border-radius: 10px;
}
.brand__name { font: 600 .78rem/1.15 var(--f-body); color: var(--ink-2); }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  text-decoration: none; font-weight: 500; font-size: .93rem; color: var(--ink-2);
  padding: .5em .8em; border-radius: 999px; transition: color .2s, background .2s;
}
.nav a:hover, .nav a.is-active { color: var(--ink); background: var(--paper-2); }
.topbar__actions { display: flex; align-items: center; gap: 10px; }
.burger { display: none; flex-direction: column; gap: 4px; }
.burger span { display: block; width: 16px; height: 2px; background: currentColor; border-radius: 2px; transition: transform .25s, opacity .25s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  padding-block: clamp(48px, 8vw, 96px) 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
}
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: end; }
.hero__text { display: grid; gap: 20px; min-width: 0; }
.hero__title { font-size: clamp(2.3rem, 6.4vw, 5rem); font-weight: 700; letter-spacing: -.025em; }
.hero__title span { display: block; color: var(--brand); }
.hero__sub { font: 500 clamp(1rem, 1.6vw, 1.2rem)/1.4 var(--f-body); max-width: 34ch; }
.hero__lead { color: var(--ink-2); max-width: 56ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.hero__panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 24px; box-shadow: var(--shadow); display: grid; gap: 18px; min-width: 0;
}
.panel__label { font: 500 .72rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
.stats { margin: 0; display: grid; gap: 14px; }
.stats div { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding-bottom: 12px; border-bottom: 1px dashed var(--line); }
.stats dt { color: var(--ink-2); font-size: .95rem; }
.stats dd { margin: 0; font: 500 clamp(1.8rem, 3.2vw, 2.4rem)/1 var(--f-mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.panel__note { font-size: .9rem; color: var(--ink-2); }
.panel__note b { color: var(--ink); font-weight: 600; }

/* Partners marquee */
.marquee {
  margin-top: clamp(48px, 7vw, 80px);
  border-block: 1px solid var(--line); background: var(--card);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track { display: flex; width: max-content; animation: scroll 45s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  padding: 20px 32px; white-space: nowrap;
  font: 700 1rem/1 var(--f-display); letter-spacing: .02em; color: var(--ink-2);
  display: flex; align-items: center; gap: 32px;
}
.marquee__item::after { content: ""; width: 6px; height: 6px; background: var(--signal); transform: rotate(45deg); }
@keyframes scroll { to { transform: translateX(-50%); } }

/* Sections */
.section { padding-block: clamp(64px, 9vw, 112px); }
.section--alt { background: var(--paper-2); }
.section__head { display: grid; gap: 14px; margin-bottom: clamp(32px, 5vw, 52px); max-width: 720px; }
.section__head--row { max-width: none; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 20px; }
.section__head--row > div { display: grid; gap: 14px; }
.section__intro { color: var(--ink-2); max-width: 60ch; }

/* Directions */
.dirs { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: 24px; align-items: start; }
.dirs__tabs { display: grid; gap: 6px; }
.dir-tab {
  display: grid; grid-template-columns: 40px 1fr auto; align-items: center; gap: 14px;
  text-align: left; width: 100%; padding: 14px 16px; border-radius: 12px;
  border: 1px solid transparent; background: transparent; color: var(--ink);
  font: 600 1rem/1.25 var(--f-body); cursor: pointer; transition: background .2s, border-color .2s;
}
.dir-tab:hover { background: var(--card); }
.dir-tab[aria-selected="true"] { background: var(--card); border-color: var(--line); box-shadow: var(--shadow); }
.dir-tab__icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--paper-2); color: var(--brand); }
.dir-tab[aria-selected="true"] .dir-tab__icon { background: var(--brand); color: var(--brand-ink); }
.dir-tab__count { font: 500 .75rem/1 var(--f-mono); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.dirs__panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: clamp(24px, 4vw, 40px); min-height: 100%; min-width: 0;
  display: grid; gap: 18px; align-content: start;
}
.dirs__panel h3 { font: 700 clamp(1.3rem, 2.4vw, 1.7rem)/1.2 var(--f-display); }
.dirs__panel > p { color: var(--ink-2); max-width: 58ch; }
.svc { list-style: none; margin: 8px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.svc li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; border-radius: 10px; background: var(--paper); font-size: .95rem; line-height: 1.4;
}
.svc li::before { content: ""; flex: none; width: 8px; height: 8px; margin-top: .45em; border-radius: 2px; background: var(--signal); transform: rotate(45deg); }
.panel-in { animation: panelIn .35s ease both; }
@keyframes panelIn { from { opacity: .3; transform: translateY(6px); } }

/* Why */
.features { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: f; }
.features li { counter-increment: f; background: var(--card); border-radius: var(--r); padding: 28px; display: grid; gap: 12px; align-content: start; border: 1px solid var(--line); }
.features li::before { content: counter(f, decimal-leading-zero); font: 500 .8rem/1 var(--f-mono); color: var(--brand); }
.features h3 { font-size: 1.1rem; }
.features p { color: var(--ink-2); font-size: .95rem; }
.regions { margin-top: 36px; display: grid; gap: 14px; }
.regions__label { font: 500 .75rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
.regions__list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.regions__list li { padding: .45em .9em; border: 1px solid var(--line); border-radius: 999px; font-size: .88rem; background: var(--card); }

/* Quotes */
.quotes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.quote { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 28px; display: grid; gap: 22px; grid-template-rows: auto 1fr auto; }
.quote__brand { font: 700 .8rem/1 var(--f-display); color: var(--brand); letter-spacing: .04em; }
.quote blockquote { margin: 0; font-size: 1rem; line-height: 1.6; }
.quote figcaption { display: flex; align-items: center; gap: 12px; padding-top: 18px; border-top: 1px solid var(--line); }
.quote figcaption b { display: block; font-weight: 600; }
.quote figcaption span { color: var(--ink-2); font-size: .85rem; line-height: 1.35; display: block; }

/* Avatars with initials fallback */
.avatar { position: relative; flex: none; border-radius: 50%; overflow: hidden; background: var(--paper-2); color: var(--brand); display: grid; place-items: center; font: 700 .9rem/1 var(--f-display); }
.avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.avatar--sm { width: 48px; height: 48px; }

/* Projects */
.projects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.project { background: var(--card); border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); display: grid; grid-template-rows: auto 1fr; transition: transform .25s, box-shadow .25s; }
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.media {
  position: relative; aspect-ratio: 16 / 10; max-width: 100%; overflow: hidden;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(135deg, color-mix(in srgb, var(--brand) 22%, var(--paper-2)), var(--paper-2));
}
.media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.project:hover .media img { transform: scale(1.04); }
.media__tag { position: absolute; left: 14px; top: 14px; z-index: 1; font: 500 .72rem/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; padding: .5em .8em; border-radius: 999px; background: var(--card); color: var(--ink); }
.project__body { padding: 20px 22px 24px; display: grid; gap: 8px; align-content: start; }
.project__body span { font: 500 .75rem/1 var(--f-mono); color: var(--ink-2); }

/* Team */
.team { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.member { display: grid; gap: 14px; align-content: start; }
.member__photo { aspect-ratio: 4 / 5; max-width: 100%; border-radius: var(--r); overflow: hidden; position: relative; background: var(--paper-2); display: grid; place-items: center; font: 700 2rem/1 var(--f-display); color: var(--brand); }
.member__photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.member h3 { font-size: .98rem; }
.member p { color: var(--ink-2); font-size: .88rem; line-height: 1.4; margin-top: 4px; }

/* News */
.news { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.post { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; display: grid; grid-template-rows: auto 1fr; }
.post__body { padding: 18px 20px 22px; display: grid; gap: 10px; align-content: start; }
.post time { font: 500 .78rem/1 var(--f-mono); color: var(--brand); font-variant-numeric: tabular-nums; }
.post h3 { font: 600 1rem/1.4 var(--f-body); }

/* Contacts */
.contact__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 72px); align-items: start; }
.contact__info { display: grid; gap: 16px; }
.clist { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 10px; }
.clist li { display: grid; grid-template-columns: 40px 1fr auto; gap: 14px; align-items: center; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.clist__icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 10px; background: var(--paper-2); color: var(--brand); }
.clist small { display: block; color: var(--ink-2); font-size: .78rem; }
.clist a, .clist strong { font-weight: 600; text-decoration: none; overflow-wrap: anywhere; }
.copy { border: 1px solid var(--line); background: transparent; color: var(--ink-2); border-radius: 8px; padding: .4em .7em; font: 500 .75rem/1 var(--f-mono); cursor: pointer; }
.copy:hover { color: var(--brand); border-color: var(--brand); }
.socials { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.socials a { display: inline-flex; align-items: center; gap: 8px; padding: .55em 1em; border-radius: 999px; border: 1px solid var(--line); text-decoration: none; font-size: .9rem; font-weight: 500; background: var(--card); }
.socials a:hover { border-color: var(--brand); color: var(--brand); }
.form { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: clamp(22px, 4vw, 36px); display: grid; gap: 16px; box-shadow: var(--shadow); }
.field { display: grid; gap: 6px; }
.field label { font-size: .85rem; font-weight: 600; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 10px; padding: .75em .9em;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 20%, transparent); }
.field.is-error input { border-color: #d64545; }
.form__status { font-size: .9rem; min-height: 1.4em; color: var(--ink-2); }
.form__status.ok { color: var(--signal); }
.form__status.err { color: #d64545; }

/* Footer */
.footer { background: var(--ink); color: color-mix(in srgb, var(--paper) 78%, transparent); padding-block: 56px 28px; }
.footer a { text-decoration: none; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 32px; }
.footer__grid nav, .footer__grid > div { display: grid; gap: 10px; align-content: start; }
.footer .brand__name { color: var(--paper); }
.footer__sub { margin-top: 14px; max-width: 34ch; font-size: .9rem; }
.footer__h { font: 500 .72rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--paper); margin-bottom: 4px; }
.footer a:hover { color: var(--paper); }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 40px; padding-top: 20px; border-top: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); font-size: .85rem; }
#footerContacts { display: grid; gap: 8px; font-size: .92rem; }

/* Reveal on scroll (content stays visible without JS) */
.reveal { transition: opacity .6s ease, transform .6s ease; }
.js .reveal.pending { opacity: 0; transform: translateY(16px); }

/* Responsive */
@media (max-width: 1024px) {
  .team { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .projects, .news, .quotes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .burger { display: flex; }
  .topbar__actions .btn { display: none; }
  .nav {
    position: fixed; inset: 68px 0 auto 0; margin: 0;
    flex-direction: column; gap: 2px; padding: 12px var(--gut) 20px;
    background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    transform: translateY(-120%); transition: transform .3s ease; visibility: hidden;
  }
  .nav.is-open { transform: none; visibility: visible; }
  .nav a { padding: .8em 1em; font-size: 1rem; }
  .topbar__actions { margin-left: auto; }
  .hero__grid, .dirs, .contact__grid { grid-template-columns: minmax(0, 1fr); }
  .features { grid-template-columns: minmax(0, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__grid > div:first-child { grid-column: 1 / -1; }
  .dirs__tabs { grid-auto-flow: column; grid-auto-columns: max-content; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x mandatory; }
  .dir-tab { grid-template-columns: 32px auto; scroll-snap-align: start; padding: 10px 14px; }
  .dir-tab__icon { width: 32px; height: 32px; }
  .dir-tab__count { display: none; }
}
@media (max-width: 640px) {
  .team { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .projects, .news, .quotes { grid-template-columns: minmax(0, 1fr); }
  .brand__name { display: none; }
  .footer .brand__name { display: block; }
  .footer__grid { grid-template-columns: 1fr; }
  .clist li { grid-template-columns: 40px 1fr; }
  .clist .copy { grid-column: 2; justify-self: start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal.pending { opacity: 1; transform: none; }
}