/* =========================================================
   Keysora x Amplitude — amplitude.keysora.com
   Design tokens extracted from "Amplitude Keysora v2.dc.html"
   ========================================================= */

:root {
  /* Примитивы — имена и значения из Keysora Corporate Kit (keysora.fig).
     Это палитра Material Design: серая рампа + pink-500 + blue-grey-100. */
  --grey-900:      #212121;
  --grey-800:      #424242;
  --grey-700:      #616161;
  --grey-600:      #757575;
  --grey-500:      #9E9E9E;
  --grey-400:      #BDBDBD;
  --grey-300:      #E0E0E0;
  --grey-200:      #EEEEEE;
  --pink-500:      #E91E63;
  --blue-grey-100: #CFD8DC;

  /* Семантика лендинга поверх примитивов */
  --ink:        var(--grey-900);
  --accent:     var(--pink-500);
  --text-muted: var(--grey-700);
  --text-soft:  var(--grey-500);
  --text-faint: var(--grey-400);
  --line:       var(--grey-300);
  --line-soft:  var(--grey-200);
  --marquee:    var(--blue-grey-100);

  --tint-blue:   #F2FDFE;
  --tint-yellow: #FFFCF2;
  --tint-green:  #F2FEF3;

  /* Корпоративный кит построен на Inter (Regular / Medium / Bold / ExtraBold) */
  --sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --serif-ui:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1224px;
  --gutter: 32px;
  --section: clamp(56px, 8vw, 96px);
  --radius-sm: 8px;
  --radius:    16px;
  --radius-lg: 24px;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--sans);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--ink); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--accent); }

img { max-width: 100%; }
h1, h2, h3 { margin: 0; }
p { margin: 0; }

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

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: #fff; padding: 12px 20px;
  border-radius: 0 0 var(--radius-sm) 0; font: 600 15px/1 var(--sans);
}
.skip-link:focus { left: 0; color: #fff; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding-top: var(--section); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 40px; cursor: pointer;
  font: 600 16px/1 var(--sans); white-space: nowrap;
  padding: 17px 28px;
  transition: background .18s ease, color .18s ease, box-shadow .18s ease;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--ink); color: #fff; }
.btn--ghost { box-shadow: inset 0 0 0 1px var(--line); color: var(--ink); padding: 17px 26px; }
.btn--ghost:hover { box-shadow: inset 0 0 0 1px var(--ink); color: var(--ink); }
.btn--sm { padding: 14px 22px; }

/* ---------- Header ---------- */
.site-header {
  max-width: var(--container); margin: 0 auto;
  padding: 44px var(--gutter) 0;
  display: flex; align-items: center; flex-wrap: wrap;
  row-gap: 20px; column-gap: 28px;
}
.brand { display: flex; align-items: center; gap: 9px; }
.brand img { width: 16px; height: 32px; display: block; }
.brand span { font: 700 25px/1 var(--sans); letter-spacing: -.035em; color: var(--ink); }

.nav {
  display: flex; flex-wrap: wrap; gap: 28px;
  margin: 0 auto;
  font: 400 16px/1 var(--sans);
}
.header-tools { display: flex; align-items: center; gap: 20px; }

.lang { display: flex; align-items: center; gap: 10px; }
.lang svg { display: block; flex: none; }
.lang__group { display: flex; align-items: center; gap: 9px; }
/* Тач-таргет >=24x24 (WCAG 2.5.8): padding растит область нажатия,
   отрицательный margin гасит его, чтобы раскладка осталась прежней. */
.lang__link { font: 600 16px/1 var(--sans); color: var(--text-faint); padding: 12px 6px; margin: -12px -6px; }
.lang__link:hover { color: var(--ink); }
.lang__link[aria-current="true"] { color: var(--ink); cursor: default; }
.lang__sep { width: 1px; height: 13px; background: var(--line); }

.nav-toggle {
  display: none; align-items: center; gap: 8px;
  background: none; border: 0; padding: 8px 0; cursor: pointer;
  font: 600 16px/1 var(--sans); color: var(--ink);
}
.nav-toggle__bars { display: block; width: 20px; height: 2px; background: var(--ink); position: relative; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: ''; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after  { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { text-align: center; padding-top: var(--section); }
.badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--tint-blue); border-radius: 40px; padding: 10px 20px 10px 14px;
}
.badge img { height: 18px; display: block; }
.badge span { font: 600 14px/1 var(--sans); }

.hero__title {
  font: 600 clamp(34px, 6.2vw, 68px)/1.1 var(--sans);
  letter-spacing: -.03em; margin: 32px auto 0; max-width: 17ch; text-wrap: balance;
}
.hero__sub {
  font: 400 clamp(18px, 2.2vw, 24px)/1.35 var(--serif-ui);
  margin: 28px auto 0; max-width: 62ch; text-wrap: pretty;
}
.hero__cta { display: flex; gap: 12px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }

/* ---------- Marquee ---------- */
.marquee { margin-top: var(--section); overflow: hidden; white-space: nowrap; }
.marquee__track {
  display: inline-flex; gap: 40px;
  font: 600 clamp(26px, 4vw, 40px)/1.3 var(--sans);
  color: var(--marquee);
  animation: ks-marquee 34s linear infinite;
  will-change: transform;
}
@keyframes ks-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee__track { animation: none; } }

/* ---------- Section furniture ---------- */
.eyebrow {
  display: inline-flex; padding: 12px 16px; border-radius: var(--radius-sm);
  box-shadow: inset 0 0 0 1px var(--line);
  font: 600 16px/1 var(--sans); color: var(--text-muted);
}
.eyebrow--solid { box-shadow: none; background: #fff; }
.section__title {
  font: 600 clamp(28px, 4vw, 40px)/1.15 var(--sans);
  letter-spacing: -.015em; margin: 28px 0 0; max-width: 26ch; text-wrap: balance;
}
.section__title--wide { max-width: 28ch; }

/* ---------- Status ---------- */
.status__panel {
  background: var(--tint-blue); border-radius: var(--radius);
  padding: clamp(28px, 5vw, 64px); margin-top: 40px;
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr);
  gap: clamp(32px, 5vw, 64px); align-items: start;
}
.status__logo { height: 25px; display: block; }
.status__lede { font: 400 18px/1.6 var(--serif-ui); margin: 28px 0 0; max-width: 44ch; }

.cert { background: #fff; border-radius: var(--radius); padding: 16px; margin-top: 32px; }
.cert__slot {
  width: 100%; height: 280px; border-radius: var(--radius-sm);
  border: 1px dashed var(--line); background: #FAFAFA;
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 24px; font: 400 15px/1.5 var(--serif-ui); color: var(--text-soft);
}
.cert__slot img { width: 100%; height: 100%; object-fit: contain; border-radius: var(--radius-sm); }
.cert__note { font: 400 14px/1.4 var(--serif-ui); color: var(--text-soft); margin-top: 12px; }

.numlist__item { border-top: 1px solid var(--line); padding: 24px 0; }
.numlist__item:last-of-type { border-bottom: 1px solid var(--line); }
.numlist__num { font: 400 16px/1 var(--sans); color: var(--text-soft); }
.numlist__item h3 { font: 600 24px/1.25 var(--sans); margin: 14px 0 0; }
.numlist__item p { font: 400 18px/1.55 var(--serif-ui); color: var(--text-muted); margin: 8px 0 0; max-width: 46ch; }

.coverage { margin-top: 32px; }
.coverage__label { font: 400 16px/1 var(--sans); text-transform: uppercase; color: var(--text-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chip { background: #fff; border-radius: var(--radius-sm); padding: 11px 16px; font: 500 16px/1 var(--sans); }

/* ---------- Services ---------- */
.cards {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 24px; margin-top: 40px;
}
.card { border-radius: var(--radius); padding: 40px 36px 44px; }
.card--blue   { background: var(--tint-blue); }
.card--yellow { background: var(--tint-yellow); }
.card--green  { background: var(--tint-green); }
.card__kicker { font: 400 16px/1 var(--sans); text-transform: uppercase; }
.card h3 { font: 600 clamp(24px, 2.6vw, 32px)/1.1 var(--sans); letter-spacing: -.02em; margin: 24px 0 0; }
.card p { font: 400 18px/1.55 var(--serif-ui); color: var(--text-muted); margin: 16px 0 0; }

/* ---------- Cases ---------- */
.cases { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; margin-top: 40px; }
.case { border-radius: var(--radius-lg); padding: clamp(32px, 4vw, 56px) clamp(28px, 3.5vw, 48px); }
.case h3 { font: 700 clamp(30px, 3.6vw, 40px)/1.05 var(--sans); letter-spacing: -.025em; }
.case__type { font: 400 16px/1 var(--sans); text-transform: uppercase; color: var(--text-soft); margin-top: 16px; }
.case p { font: 400 18px/1.6 var(--serif-ui); margin: 28px 0 0; }
.case .chips { margin-top: 32px; }
.case .chip { padding: 10px 15px; font-size: 15px; }
.cases__note { font: 400 18px/1.6 var(--serif-ui); color: var(--text-soft); margin-top: 24px; }

/* ---------- Platform ---------- */
.platform { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 32px; margin-top: 40px; }
.platform__item { border-top: 1px solid var(--ink); padding-top: 20px; }
.platform__item h3 { font: 600 22px/1.2 var(--sans); }
.platform__item p { font: 400 17px/1.55 var(--serif-ui); color: var(--text-muted); margin: 10px 0 0; }

/* ---------- Process ---------- */
.process { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 24px; margin-top: 48px; }
.step { border-top: 1px solid var(--line); padding-top: 20px; }
.step__num { font: 400 56px/1 var(--sans); color: var(--accent); }
.step h3 { font: 600 20px/1.25 var(--sans); margin: 20px 0 0; }
.step p { font: 400 17px/1.5 var(--serif-ui); color: var(--text-soft); margin: 8px 0 0; }

/* ---------- Training ---------- */
.training {
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.35fr);
  gap: clamp(32px, 5vw, 64px); margin-top: 32px; align-items: start;
}
.training h2 { font: 600 clamp(28px, 4vw, 40px)/1.15 var(--sans); letter-spacing: -.015em; text-wrap: balance; }
.training__row {
  border-top: 1px solid var(--line); padding: 24px 0;
  display: flex; gap: 40px; align-items: baseline;
}
.training__row:last-child { border-bottom: 1px solid var(--line); }
.training__when { font: 400 16px/1 var(--sans); color: var(--text-soft); width: 104px; flex: none; }
.training__row h3 { font: 600 22px/1.25 var(--sans); }
.training__row p { font: 400 18px/1.55 var(--serif-ui); color: var(--text-muted); margin: 8px 0 0; }

/* ---------- Request / form ---------- */
.request__panel {
  background: var(--tint-blue); border-radius: var(--radius-lg);
  padding: clamp(28px, 5vw, 64px);
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.05fr);
  gap: clamp(32px, 5.5vw, 72px); align-items: start;
}
.request__title { font: 600 clamp(28px, 4vw, 40px)/1.12 var(--sans); letter-spacing: -.02em; margin: 28px 0 0; text-wrap: balance; }
.request__lede { font: 400 20px/1.5 var(--serif-ui); margin: 20px 0 0; max-width: 38ch; }
.request__links { margin-top: 36px; display: flex; flex-direction: column; gap: 12px; font: 400 18px/1.5 var(--serif-ui); }

.form { background: #fff; border-radius: var(--radius); padding: clamp(24px, 3vw, 36px); }
.form__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; align-items: end; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { margin-top: 16px; }
.field > span { font: 500 14px/1 var(--sans); color: var(--text-soft); }
.field input, .field textarea {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 14px 15px; font: 400 16px/1.4 var(--sans); color: var(--ink);
  background: #fff; width: 100%;
}
.field textarea { resize: vertical; min-height: 84px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--ink); }
.form__submit { margin-top: 24px; width: 100%; padding: 18px; }
.form__note { font: 400 14px/1.5 var(--serif-ui); color: var(--text-soft); margin-top: 14px; }
.form__error {
  display: none; margin-top: 14px; padding: 12px 14px;
  border-radius: var(--radius-sm); background: #FFF1F4; color: #B0003A;
  font: 400 15px/1.45 var(--serif-ui);
}
.form__error.is-visible { display: block; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-success {
  background: #fff; border-radius: var(--radius); padding: 64px 40px;
  min-height: 360px; display: none; flex-direction: column; justify-content: center;
}
.form-success.is-visible { display: flex; }
.form-success > div { font: 600 32px/1.15 var(--sans); letter-spacing: -.02em; }
.form-success p { font: 400 20px/1.5 var(--serif-ui); color: var(--text-muted); margin: 16px 0 0; }
.is-hidden { display: none !important; }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.35fr); gap: clamp(32px, 5vw, 64px); align-items: start; }
.faq__item { border-top: 1px solid var(--line-soft); }
.faq__item:last-child { border-bottom: 1px solid var(--line-soft); }
.faq__q {
  width: 100%; padding: 28px 0; display: flex; justify-content: space-between;
  gap: 24px; align-items: baseline; cursor: pointer;
  font: 600 clamp(19px, 2vw, 22px)/1.3 var(--sans); color: var(--ink);
  list-style: none;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after {
  content: '+'; color: var(--accent); font: 400 26px/1 var(--sans); flex: none;
}
.faq__item[open] .faq__q::after { content: '\2013'; }
.faq__a { font: 400 18px/1.65 var(--serif-ui); color: var(--text-muted); margin: 0 0 28px; max-width: 62ch; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--tint-blue); border-radius: var(--radius);
  padding: clamp(28px, 5vw, 64px);
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  gap: clamp(28px, 5vw, 64px); align-items: center;
}
.cta-banner img { height: 25px; display: block; }
.cta-banner h2 { font: 600 clamp(24px, 3vw, 32px)/1.15 var(--sans); letter-spacing: -.02em; margin: 32px 0 0; }
.cta-banner p { font: 400 18px/1.6 var(--serif-ui); margin: 16px 0 0; max-width: 46ch; }
.cta-banner__action { justify-self: end; }
.cta-banner__action .btn { padding: 18px 30px; }

/* ---------- SEO text ---------- */
.seo-text h2 { font: 600 clamp(24px, 3vw, 32px)/1.2 var(--sans); letter-spacing: -.02em; max-width: 32ch; text-wrap: balance; }
.seo-text__cols { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 40px; margin-top: 32px; }
.seo-text__cols p { font: 400 17px/1.65 var(--serif-ui); color: var(--text-muted); }

/* ---------- Footer ---------- */
.site-footer { margin-top: var(--section); border-top: 1px solid var(--line-soft); }
.site-footer__inner {
  max-width: var(--container); margin: 0 auto;
  padding: 48px var(--gutter);
  display: flex; gap: 48px; align-items: flex-start; flex-wrap: wrap;
}
.site-footer .brand { width: 190px; flex: none; }
.site-footer .brand span { font-size: 24px; }
.site-footer__tag { font: 400 16px/1.35 var(--sans); color: var(--text-faint); width: 220px; flex: none; }
.site-footer__links { display: flex; gap: 32px; font: 400 16px/1 var(--sans); flex-wrap: wrap; }
.site-footer__links a { padding: 10px 0; margin: -10px 0; }
.site-footer__copy { font: 400 16px/1 var(--sans); color: var(--text-soft); margin-left: auto; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .process { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .platform { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .seo-text__cols { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 900px) {
  :root { --gutter: 20px; }

  .site-header { padding-top: 24px; position: relative; }
  .nav {
    display: none; order: 3; width: 100%; margin: 0;
    flex-direction: column; gap: 0;
    border-top: 1px solid var(--line-soft);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 16px 0; border-bottom: 1px solid var(--line-soft); font-size: 17px; }
  .nav-toggle { display: inline-flex; margin-left: auto; order: 2; }
  .header-tools { order: 2; gap: 14px; }
  .header-tools .btn { display: none; }

  .nav-toggle { min-height: 44px; }

  .status__panel,
  .request__panel,
  .training,
  .faq,
  .cta-banner { grid-template-columns: minmax(0,1fr); }
  .cta-banner__action { justify-self: start; }
  .cases { grid-template-columns: minmax(0,1fr); }
  .form-success { min-height: 0; padding: 40px 28px; }
}

@media (max-width: 640px) {
  .cards { grid-template-columns: minmax(0,1fr); }
  .platform { grid-template-columns: minmax(0,1fr); }
  .process { grid-template-columns: minmax(0,1fr); }
  .seo-text__cols { grid-template-columns: minmax(0,1fr); }
  .form__grid { grid-template-columns: minmax(0,1fr); }
  .hero__cta .btn { width: 100%; }
  .training__row { flex-direction: column; gap: 8px; }
  .training__when { width: auto; }
  .site-footer__inner { gap: 28px; }
  .site-footer__tag, .site-footer .brand { width: 100%; }
  .site-footer__copy { margin-left: 0; }
  .step__num { font-size: 44px; }

  /* до поля ввода набегало 20+28+24=72px с каждой стороны — ужимаем вложенность */
  .card { padding: 32px 24px 36px; }
  .case { padding: 32px 24px; }
  .status__panel, .request__panel, .cta-banner { padding: 20px; }
  .form { padding: 20px; }
  .form-success { padding: 32px 20px; }
}