/* ============================================================
   QueTeq Group — landing
   Палитра: чернильный фон, сигнальный циан, янтарный импульс
   ============================================================ */
:root {
  --ink: #060b14;
  --surface: #0c1422;
  --surface-2: #101a2c;
  --line: rgba(154, 178, 210, 0.14);
  --text: #e9eef6;
  --muted: #92a1b5;
  --signal: #57c7ff;
  --signal-dim: rgba(87, 199, 255, 0.12);
  --pulse: #ffb454;

  --font-display: "Unbounded", "Manrope", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --container: 1160px;
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  position: relative; /* контейнер для несущей линии .carrier */
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg, canvas { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  position: relative; /* контент выше несущей линии (z-index: 1) */
  z-index: 2;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.mono { font-family: var(--font-mono); }

/* ---------- Typography helpers ---------- */
.eyebrow {
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 16px;
}

/* короткий сигнальный штрих — тот же знак, что у карточек и шагов */
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  background: var(--signal);
  vertical-align: 4px;
  margin-right: 10px;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: var(--signal);
  color: #04121f;
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(87, 199, 255, 0.35);
}

.btn--ghost {
  border-color: var(--line);
  color: var(--text);
}

.btn--ghost:hover { border-color: var(--signal); color: var(--signal); }

.btn--sm { padding: 9px 18px; font-size: 14px; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 11, 20, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.logo__group {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  color: var(--muted);
  margin-left: 7px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  vertical-align: middle;
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 15px;
  color: var(--muted);
}

.nav a { transition: color 0.2s ease; }
.nav a:hover { color: var(--text); }

.header__actions { display: flex; align-items: center; gap: 14px; }

.lang {
  display: flex;
  gap: 2px;
}

.lang__btn {
  position: relative;
  background: none;
  border: none;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 7px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.lang__btn:hover { color: var(--text); }

.lang__btn.is-active { color: var(--text); }

/* активный язык подчёркнут так же, как активный пункт меню */
.lang__btn.is-active::after {
  content: "";
  position: absolute;
  left: 7px;
  right: 7px;
  bottom: 2px;
  height: 2px;
  background: var(--signal);
}

.burger { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero__wave {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 56px;
  align-items: center;
  padding-block: 110px 120px;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin-bottom: 24px;
}

.hero__sub {
  color: var(--muted);
  font-size: 18px;
  max-width: 52ch;
  margin-bottom: 36px;
}

.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Диаграмма векторов в hero ---------- */
.hero__viz { padding: 20px 0 20px 36px; }


/* ---------- Sections ---------- */
.section { padding-block: 100px; }

.section--alt {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.section__head { max-width: 640px; margin-bottom: 56px; }

/* ---------- Service cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px 32px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.card:hover {
  border-color: rgba(87, 199, 255, 0.45);
  transform: translateY(-4px);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  margin-bottom: 14px;
}

.card__text {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 20px;
}

.card__list {
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 14.5px;
}

.card__list li {
  padding-left: 20px;
  position: relative;
  color: var(--text);
}

.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 2px;
  background: var(--signal);
}

/* ---------- About / vectors ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 64px;
  align-items: center;
}

.vectors { width: 100%; }

.vectors__line {
  stroke: url(#vgrad);
  stroke-width: 2;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
}

.reveal.is-visible .vectors__line { animation: draw 1.6s ease forwards; }
.reveal.is-visible .vectors__line--b { animation-delay: 0.25s; }

@keyframes draw { to { stroke-dashoffset: 0; } }

.vectors__out {
  stroke: var(--pulse);
  stroke-width: 2.5;
  stroke-linecap: round;
}

.vectors__node {
  fill: var(--ink);
  stroke: var(--pulse);
  stroke-width: 2.5;
}

.vectors__label {
  fill: var(--muted);
  font-size: 12px;
  letter-spacing: 0.2em;
}

.vectors__label--out { fill: var(--pulse); }

.about__text { color: var(--muted); margin-bottom: 18px; }

.about__points { display: grid; gap: 16px; margin-top: 30px; }

.point {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 15.5px;
}

.point__led {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pulse);
  box-shadow: 0 0 8px rgba(255, 180, 84, 0.7);
  transform: translateY(-1px);
}

/* ---------- Team (страница «О компании») ---------- */
.team {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 64px;
  align-items: start;
}

.team__lead .about__text { color: var(--muted); }

.team__roles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.role {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  position: relative;
}

.role::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 36px;
  height: 2px;
  background: var(--signal);
}

.role__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 10px;
}

.role__text {
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- Process ---------- */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}

.step {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  position: relative;
}

.step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--signal);
}

.step__num {
  font-size: 12px;
  color: var(--signal);
  letter-spacing: 0.2em;
}

.step__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  margin: 14px 0 10px;
}

.step__text { color: var(--muted); font-size: 14.5px; }

/* ---------- Contact ---------- */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.contact__text { color: var(--muted); margin-bottom: 34px; max-width: 44ch; }

.contact__rows { display: grid; gap: 2px; }

.contact__row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  transition: color 0.2s ease;
}

a.contact__row:hover { color: var(--signal); }

.contact__key { color: var(--muted); }

/* ---------- Form ---------- */
.form {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 32px;
  display: grid;
  gap: 20px;
}

.form__field { display: grid; gap: 8px; }

.form__field label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
}

.form__field input,
.form__field textarea {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  resize: vertical;
  transition: border-color 0.2s ease;
}

.form__field input:focus,
.form__field textarea:focus {
  outline: none;
  border-color: var(--signal);
}

.form__submit { width: 100%; }

.form__ok { color: var(--pulse); font-size: 13px; }

.form__err { color: #ff8a8a; font-size: 13px; }

/* honeypot — прячем от людей, оставляем доступным ботам */
.form__hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__note { color: var(--muted); font-size: 12.5px; }

.form__policy { display: inline-block; margin-top: 4px; color: var(--signal); font-size: 12.5px; }

/* ---------- Правовая страница ---------- */
.legal { max-width: 760px; }

.legal__updated { color: var(--muted); font-size: 13px; margin-bottom: 36px; }

.legal__lead { color: var(--text); font-size: 17px; margin-bottom: 8px; }

.legal h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  margin: 34px 0 10px;
}

.legal p { color: var(--muted); margin-bottom: 6px; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding-block: 56px 28px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 36px;
  margin-bottom: 44px;
}

.footer__brand .logo { margin-bottom: 14px; }

.footer__tag {
  color: var(--muted);
  font-size: 14px;
  max-width: 30ch;
  margin-bottom: 18px;
}

.footer__col h4 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.footer__col a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 14.5px;
  transition: color 0.2s ease;
}

.footer__col a:hover { color: var(--text); }

.footer__col a.mono { font-size: 13px; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px 28px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 22px;
  color: var(--muted);
  font-size: 13px;
}

.footer__bottom a { color: var(--muted); transition: color 0.2s ease; }
.footer__bottom a:hover { color: var(--text); }

.footer__sig {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--signal);
  opacity: 0.7;
}

/* ---------- Активный пункт меню ---------- */
.nav a.is-active,
.nav__drop-btn.is-active {
  color: var(--text);
  position: relative;
}

.nav a.is-active::after,
.nav__drop-btn.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--signal);
}

/* ---------- Выпадающее меню «Направления» ---------- */
.nav__drop { position: relative; }

.nav__drop-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: none;
  border: none;
  padding: 0;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 15px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.nav__drop-btn:hover { color: var(--text); }

.nav__drop-btn.is-active::after { right: 17px; } /* подчёркивание без стрелки */

.nav__caret {
  width: 10px;
  height: 6px;
  transition: transform 0.2s ease;
}

.nav__menu {
  position: absolute;
  top: calc(100% + 16px);
  left: -14px;
  min-width: 220px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

/* невидимый мост между кнопкой и меню, чтобы hover не обрывался */
.nav__menu::before {
  content: "";
  position: absolute;
  top: -18px;
  left: 0;
  right: 0;
  height: 18px;
}

.nav__drop.is-open .nav__menu,
.nav__drop:hover .nav__menu,
.nav__drop:focus-within .nav__menu {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.nav__drop.is-open .nav__caret,
.nav__drop:hover .nav__caret { transform: rotate(180deg); }

.nav__menu a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14.5px;
  color: var(--muted);
  transition: background 0.15s ease, color 0.15s ease;
}

.nav__menu a:hover {
  background: var(--signal-dim);
  color: var(--text);
}

.nav__menu a.is-active { color: var(--signal); }
.nav__menu a.is-active::after { content: none; }

/* ---------- Page hero (внутренние страницы) ---------- */
.page-hero {
  border-bottom: 1px solid var(--line);
  padding-block: 84px 72px;
}

.page-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.8vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin-bottom: 20px;
  max-width: 20ch;
}

.page-hero__lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 60ch;
}

/* ---------- Компетенции на страницах направлений ---------- */
.caps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 22px;
}

.cap {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  position: relative;
}

.cap::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--signal);
}

.cap__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16.5px;
  margin-bottom: 10px;
}


.cap__text {
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- Ссылка «Подробнее» в карточках ---------- */
.card__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  color: var(--signal);
  font-size: 14px;
  font-weight: 600;
  transition: gap 0.2s ease;
}

.card__more:hover { gap: 10px; }

/* ---------- CTA-полоса ---------- */
.cta-band {
  background: var(--surface);
  border-block: 1px solid var(--line);
  padding-block: 64px;
}

.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-band__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 2.8vw, 32px);
  margin-bottom: 10px;
}

.cta-band__text { color: var(--muted); max-width: 52ch; }

/* ---------- Несущая линия ---------- */
.carrier {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1; /* над фонами секций, под контентом (.container z=2) */
  pointer-events: none;
}

.carrier__dim {
  fill: none;
  stroke: rgba(87, 199, 255, 0.07);
  stroke-width: 1;
  stroke-dasharray: 2 6;
}

.carrier__lit {
  fill: none;
  stroke: rgba(87, 199, 255, 0.26);
  stroke-width: 1.5;
  stroke-linecap: round;
}

.carrier__node {
  fill: var(--ink);
  stroke: rgba(146, 161, 181, 0.35);
  stroke-width: 1.5;
  transition: fill 0.4s ease, stroke 0.4s ease;
}

.carrier__node.is-lit {
  fill: rgba(255, 180, 84, 0.85);
  stroke: rgba(255, 180, 84, 0.85);
  filter: drop-shadow(0 0 4px rgba(255, 180, 84, 0.5));
}

.carrier__head { fill: rgba(87, 199, 255, 0.8); }

.carrier__halo { fill: rgba(87, 199, 255, 0.1); }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; padding-block: 70px 80px; }
  .hero__viz { max-width: 440px; padding-left: 0; }
  .cards, .caps { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .about, .contact, .team { grid-template-columns: 1fr; gap: 44px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .about__viz { max-width: 440px; }
  .nav { display: none; }

  .burger {
    display: grid;
    gap: 5px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
  }

  .burger span {
    width: 22px;
    height: 2px;
    background: var(--text);
    transition: transform 0.25s ease, opacity 0.25s ease;
  }

  .burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .burger.is-open span:nth-child(2) { opacity: 0; }
  .burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav.is-open {
    display: flex;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 20px;
    z-index: 49;
  }

  .nav.is-open a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    color: var(--text);
    font-size: 16px;
  }

  .nav.is-open a:last-child { border-bottom: none; }

  /* в мобильном меню дропдаун раскрыт плоским списком */
  .nav__drop,
  .nav__menu { display: contents; }
  .nav__drop-btn { display: none; }
  .nav__menu { visibility: visible; }
}

@media (max-width: 560px) {
  .section { padding-block: 70px; }
  .cards, .caps, .footer__grid, .team__roles { grid-template-columns: 1fr; }
  .page-hero { padding-block: 60px 52px; }
  .header__inner { gap: 10px; }
  .header__actions { gap: 8px; }
  .logo { gap: 7px; }
  .logo__group { display: none; }
  .lang__btn { padding: 7px 9px; }
  .steps { grid-template-columns: 1fr; }
  .form { padding: 26px 20px; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .contact__row { flex-direction: column; gap: 4px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .vectors__line { stroke-dashoffset: 0; animation: none !important; }
  .hero__wave { display: none; }

  /* линия остаётся статичной, бегущий импульс скрыт */
  .carrier__head,
  .carrier__halo { display: none; }
  .carrier__node { transition: none; }
}