/* S-labs — landing page
   Tokens and values follow design_handoff_slabs_landing/README.md and S-labs.dc.html */

:root {
  --bg: #131110;
  --card: #1b1817;
  --card-2: #211d1b;
  --card-open: #1e1a18;
  --visual: #171413;

  --text: #f4f1ee;
  --text-strong: #e6e1dc;
  --text-2: #b3aca6;
  --text-3: #a8a19b;
  --text-3b: #c6c0ba;
  --text-tag: #d8d2cc;
  --caption: #7d7671;
  --dim: #6d6661;

  --accent: #e8674a;
  --accent-hover: #f07d61;
  --accent-bg: rgba(232, 103, 74, 0.12);
  --accent-bg-2: rgba(232, 103, 74, 0.14);
  --accent-bg-3: rgba(232, 103, 74, 0.16);
  --accent-line: rgba(232, 103, 74, 0.35);
  --accent-line-2: rgba(232, 103, 74, 0.45);
  --accent-line-3: rgba(232, 103, 74, 0.5);

  --line: rgba(255, 255, 255, 0.07);
  --line-card: rgba(255, 255, 255, 0.09);
  --line-input: rgba(255, 255, 255, 0.12);
  --line-pill: rgba(255, 255, 255, 0.14);
  --line-outline: rgba(255, 255, 255, 0.16);

  --f-display: "Unbounded", system-ui, sans-serif;
  --f-text: "Golos Text", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;

  --gutter: 40px;
  --section-gap: 96px;
  --header-h: 80px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* box-sizing оставлен по умолчанию (content-box), как в макете */

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--text); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent); }
::selection { background: var(--accent); color: var(--bg); }
img { display: block; max-width: 100%; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.page { min-height: 100vh; overflow-x: clip; background: var(--bg); }
.container { max-width: 1200px; margin: 0 auto; }
.section { padding: 0 var(--gutter) var(--section-gap); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Typography ---------- */
.h1 {
  margin: 26px 0 0;
  font-family: var(--f-display); font-weight: 500;
  font-size: clamp(38px, 4.4vw, 66px); line-height: 1.04; letter-spacing: -0.035em;
  text-wrap: balance;
}
.h2.h2--lh-normal { line-height: normal; }
.h2 {
  margin: 0;
  font-family: var(--f-display); font-weight: 500;
  font-size: clamp(28px, 3vw, 44px); line-height: 1.1; letter-spacing: -0.03em;
}
.lead-s {
  margin: 18px 0 0; max-width: 680px;
  font-size: 16px; line-height: 1.6; color: var(--text-2); text-wrap: pretty;
}
.label {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--caption);
}
.label--accent { color: var(--accent); }
.num { font-family: var(--f-mono); font-size: 12px; color: var(--caption); }
.num--accent { color: var(--accent); }

/* ---------- Common blocks ---------- */
.card {
  min-width: 0;
  border: 1px solid var(--line-card);
  border-radius: 18px;
  background: var(--card);
}
.icon-tile {
  display: grid; place-items: center; flex: 0 0 auto;
  width: 46px; height: 46px; border-radius: 13px;
  background: var(--accent-bg); color: var(--accent);
}
.bullets { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.bullets li {
  display: grid; grid-template-columns: 16px 1fr; gap: 10px;
  font-size: 15px; line-height: 1.5; color: var(--text-strong);
}
.bullets li::before {
  content: ""; margin-top: 8px; width: 6px; height: 6px; border-radius: 2px; background: var(--accent);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; cursor: pointer; white-space: nowrap;
  transition: background-color .15s, border-color .15s, color .15s;
}
.btn--accent { background: var(--accent); color: var(--bg); font-weight: 600; border: none; }
.btn--accent:hover { background: var(--accent-hover); color: var(--bg); }
.btn--outline { border: 1px solid var(--line-outline); color: var(--text); background: transparent; }
.btn--outline:hover { border-color: var(--accent); color: var(--text); }

.img-fill { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.media { position: relative; overflow: hidden; background: var(--visual); }

/* ---------- Logo ---------- */
.logo {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--f-display); font-weight: 600; font-size: 24px;
  letter-spacing: -0.04em; white-space: nowrap; color: var(--text);
}
.logo__px { display: flex; gap: 4px; position: relative; top: 3px; }
.logo__px i { width: 6px; height: 6px; border-radius: 2px; background: var(--accent); }
.logo__px i + i { background: rgba(232, 103, 74, 0.5); }
.logo__labs { font-weight: 400; }
.logo--sm { gap: 7px; font-size: 20px; }
.logo--sm .logo__px { gap: 3px; top: 2px; }
.logo--sm .logo__px i { width: 5px; height: 5px; border-radius: 1.5px; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: 16px 24px; padding: 14px 28px;
  background: rgba(19, 17, 16, 0.82);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header__brand { display: flex; align-items: center; gap: 10px; }
.header__brand:hover { color: var(--text); }
.nav { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 18px; font-size: 14px; color: var(--text-2); }
.nav a { color: inherit; }
.nav a:hover { color: var(--accent); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 104px var(--gutter) 72px; border-bottom: 1px solid var(--line); }
.hero__glow {
  position: absolute; top: -140px; right: -120px; width: 620px; height: 620px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 103, 74, 0.16), transparent 68%);
  pointer-events: none;
}
.hero__grid {
  position: relative; max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: end;
}
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px;
  border: 1px solid var(--line-input); border-radius: 999px;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.hero__lead {
  margin: 26px 0 0; max-width: 560px;
  font-size: 19px; line-height: 1.55; color: var(--text-2); text-wrap: pretty;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero__actions .btn { padding: 15px 26px; font-size: 15px; }
.hero__facts { display: grid; gap: 14px; }
.fact { padding: 22px; border: 1px solid var(--line-card); border-radius: 16px; background: var(--card); }
.fact__value { font-family: var(--f-display); font-size: 34px; font-weight: 500; letter-spacing: -0.03em; }
.fact__value--accent { color: var(--accent); }
.fact__text { margin-top: 6px; font-size: 14px; color: var(--text-2); }

/* ---------- Services ---------- */
.services { padding: var(--section-gap) var(--gutter); }
.split-head {
  display: grid; grid-template-columns: minmax(0, auto) minmax(0, 1fr); gap: 36px; align-items: start;
}
.split-head p {
  margin: 6px 0 0; max-width: 820px;
  font-size: 16px; line-height: 1.65; color: var(--text-2); text-wrap: pretty;
}
.services__grid {
  margin-top: 44px; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px;
}
.service {
  display: flex; flex-direction: column; gap: 14px; padding: 26px 28px;
  transition: border-color .2s, background-color .2s;
}
.service:hover { border-color: var(--accent-line-3); background: var(--card-2); }
.service__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.service__title { margin: 0; font-family: var(--f-display); font-weight: 500; font-size: 17px; letter-spacing: -0.02em; line-height: 1.3; }
.service__text { margin: 0; font-size: 15px; line-height: 1.55; color: var(--text-2); text-wrap: pretty; }

/* ---------- Enablement ---------- */
.enable__head { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; align-items: end; }
.enable__head p { margin: 0; font-size: 16px; line-height: 1.65; color: var(--text-2); text-wrap: pretty; }
.enable__grid { margin-top: 44px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.enable-card { display: flex; flex-direction: column; gap: 20px; padding: 38px; border-radius: 20px; }
.enable-card h3 {
  margin: 0; font-family: var(--f-display); font-weight: 500; font-size: 23px;
  letter-spacing: -0.02em; line-height: 1.2; overflow-wrap: anywhere;
}
.enable-card > p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--text-2); text-wrap: pretty; }
.enable-card .bullets { gap: 12px; }
.enable-card .bullets li { gap: 12px; }
.enable-card .btn { align-self: flex-start; margin-top: auto; padding: 14px 24px; font-size: 15px; }

/* ---------- Accordion (situations, fit) ---------- */
.acc-list { margin-top: 40px; display: grid; gap: 12px; }
.acc { overflow: hidden; transition: border-color .2s; }
.acc.is-open { border-color: var(--accent-line-2); }
.acc__btn {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 24px 28px; background: transparent; border: none; color: var(--text);
  font-family: inherit; text-align: left; cursor: pointer;
}
.acc__btn-main { display: flex; align-items: center; gap: 18px; min-width: 0; }
.acc__title { font-family: var(--f-display); font-weight: 500; font-size: 19px; letter-spacing: -0.02em; line-height: 1.3; }
.acc__sign {
  flex: 0 0 auto; width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--line-pill); color: var(--accent); font-size: 18px;
}
.acc__panel[hidden] { display: none; }
.sit__panel {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px;
  padding: 24px 28px 30px; border-top: 1px solid var(--line); background: var(--card-open);
}
.sit__panel > div { min-width: 0; }
.sit__panel p { margin: 12px 0 0; font-size: 15px; line-height: 1.55; color: var(--text-strong); text-wrap: pretty; }
.sit__panel .bullets { margin-top: 12px; }

/* ---------- Case table ---------- */
.eyebrow { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.eyebrow + .h2 { margin-top: 18px; }
.case-table { margin-top: 40px; overflow: hidden; }
.case-row {
  display: grid; grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr) minmax(0, 1fr);
  border-bottom: 1px solid var(--line);
}
.case-row--head { border-bottom-color: var(--line-card); }
.case-row--head > div { padding: 16px 24px; }
.case-row > div + div { border-left: 1px solid var(--line); }
.case-row .is-after { background: var(--card-2); }
.case-cell { min-width: 0; padding: 24px; display: grid; gap: 12px; align-content: start; }
.case-step__title { margin-top: 10px; font-family: var(--f-display); font-weight: 500; font-size: 16px; letter-spacing: -0.02em; line-height: 1.3; }
.case-step { display: block; }
.case-main { font-size: 15px; line-height: 1.5; color: var(--text-strong); }
.is-after .case-main { color: var(--text); }
.case-note { display: grid; gap: 4px; font-size: 14px; line-height: 1.5; color: var(--text-2); }
.case-note .label { font-size: 10px; }
.case-col-label { display: none; }
.case-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--line); }
.case-metric { padding: 22px 24px; background: var(--card); }
.case-metric__value { margin-top: 8px; font-family: var(--f-display); font-size: 22px; font-weight: 500; letter-spacing: -0.02em; }

/* ---------- Study ---------- */
.study__grid {
  margin-top: 40px; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  gap: 24px; align-items: start;
}
.study__steps { display: grid; gap: 10px; }
.study-step { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); overflow: hidden; }
.study-step > div { min-width: 0; padding: 22px 24px; }
.study-step__head { display: flex; align-items: baseline; gap: 12px; }
.study-step__title { font-family: var(--f-display); font-weight: 500; font-size: 17px; letter-spacing: -0.02em; line-height: 1.3; }
.study-step p { margin: 10px 0 0; font-size: 14px; line-height: 1.55; color: var(--text-2); }
.study-step__result { background: var(--card-2); border-left: 1px solid var(--line); }
.study-step__result-text { margin-top: 10px; font-size: 15px; line-height: 1.5; color: var(--text); }
.study-map { overflow: hidden; }
.study-map .media { height: 340px; }
.study-map .img-fill { object-fit: contain; }
.study-map__caption { padding: 20px 24px; font-size: 14px; line-height: 1.5; color: var(--text-2); }

/* ---------- Fit ---------- */
.fit__grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 40px; align-items: start;
}
.fit__data { margin-top: 28px; padding: 26px; }
.fit__data .bullets { margin-top: 16px; gap: 10px; }
.fit__list { display: grid; gap: 10px; }
.fit .acc__btn { padding: 20px 24px; font-size: 17px; line-height: 1.4; }
.fit .acc__sign-plain { flex: 0 0 auto; color: var(--accent); font-size: 20px; }
.fit__panel { padding: 0 24px 22px; }
.fit__panel p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--text-2); text-wrap: pretty; }
.fit__example {
  margin-top: 12px; padding: 12px 14px; border-radius: 10px; background: var(--card-2);
  font-size: 14px; line-height: 1.5; color: var(--text-strong);
}

/* ---------- Models ---------- */
.models__grid { margin-top: 40px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.model { overflow: hidden; border-radius: 20px; }
.model .media { height: 220px; }
.model__body { padding: 30px; }
.model h3 { margin: 0; font-family: var(--f-display); font-weight: 500; font-size: 21px; letter-spacing: -0.02em; }
.model p { margin: 14px 0 0; font-size: 15px; line-height: 1.6; color: var(--text-2); text-wrap: pretty; }
.models .lead-s, .industries .lead-s { max-width: 620px; }
.expertise .lead-s { max-width: 640px; }

/* ---------- Rails (industries, expertise, tech) ---------- */
.rail {
  margin-top: 40px; display: flex; gap: 16px;
  overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none;
  padding-bottom: 4px; overscroll-behavior-x: contain;
}
.rail::-webkit-scrollbar { display: none; }
.rail > * { scroll-snap-align: start; }
.rail-nav { margin-top: 28px; display: flex; justify-content: center; gap: 10px; }
.rail-btn {
  width: 46px; height: 46px; display: grid; place-items: center;
  border: 1px solid var(--line-outline); border-radius: 50%; background: transparent;
  color: var(--text); font-family: system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 16px; cursor: pointer; transition: border-color .15s, color .15s;
}
.rail-btn:hover { border-color: var(--accent); color: var(--accent); }

.industry {
  position: relative; flex: 0 0 360px; height: 280px; border-radius: 18px; overflow: hidden;
  border: 1px solid var(--line-card); background: var(--visual);
}
.industry__caption {
  position: absolute; inset: auto 0 0 0; padding: 24px; pointer-events: none;
  background: linear-gradient(transparent, rgba(19, 17, 16, 0.9));
}
.industry__title { font-family: var(--f-display); font-size: 20px; font-weight: 500; letter-spacing: -0.02em; }
.industry__text { margin-top: 6px; font-size: 14px; color: var(--text-3b); }

.expertise-card { flex: 0 0 360px; overflow: hidden; transition: border-color .2s; }
.expertise-card:hover { border-color: var(--accent-line-2); }
.expertise-card .media { height: 150px; }
.expertise-card__body { padding: 28px 30px; }
.expertise-card h3 { margin: 14px 0 0; font-family: var(--f-display); font-weight: 500; font-size: 20px; letter-spacing: -0.02em; line-height: 1.2; }
.expertise-card p { margin: 12px 0 0; font-size: 15px; line-height: 1.55; color: var(--text-2); text-wrap: pretty; }

/* ---------- Portfolio ---------- */
.portfolio__grid { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.project { display: flex; flex-direction: column; overflow: hidden; }
.project .media { height: 220px; }
.project__body { padding: 26px 28px 30px; }
.project h3 { margin: 12px 0 0; font-family: var(--f-display); font-weight: 500; font-size: 19px; letter-spacing: -0.02em; line-height: 1.25; }
.project p { margin: 12px 0 0; font-size: 15px; line-height: 1.55; color: var(--text-2); text-wrap: pretty; }

/* ---------- Gov ---------- */
.gov__grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: start; }
.gov h2 { margin: 20px 0 0; font-size: clamp(26px, 2.8vw, 42px); }
.gov__text { margin: 20px 0 0; font-size: 16px; line-height: 1.6; color: var(--text-2); text-wrap: pretty; }
.gov__photo { margin-top: 28px; height: 220px; border-radius: 18px; border: 1px solid var(--line-card); }
.gov__points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.gov-point { padding: 24px; border-radius: 16px; }
.gov-point__n {
  width: 26px; height: 26px; border-radius: 8px; background: var(--accent-bg-2);
  display: grid; place-items: center; color: var(--accent); font-family: var(--f-mono); font-size: 12px;
}
.gov-point__text { margin-top: 14px; font-size: 15px; line-height: 1.45; color: var(--text-strong); }

/* ---------- Tech ---------- */
.tech__head { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.tech .rail { margin-top: 36px; align-items: center; gap: 12px; }
.tech-chip {
  flex: 0 0 auto; display: flex; align-items: center; gap: 12px; padding: 20px 26px;
  border: 1px solid var(--line-card); border-radius: 14px; background: var(--card);
}
.tech-chip img { width: 26px; height: 26px; flex: 0 0 auto; }
.tech-chip span { font-family: var(--f-mono); font-size: 13px; color: var(--text-tag); white-space: nowrap; }

/* ---------- Contact ---------- */
.contact__box {
  max-width: 1200px; margin: 0 auto; position: relative; border-radius: 26px; overflow: hidden;
  border: 1px solid var(--line-card); background: linear-gradient(120deg, #221c19, #181514 55%);
}
.contact__glow {
  position: absolute; top: -180px; left: 38%; width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 103, 74, 0.18), transparent 70%); pointer-events: none;
}
.contact__grid {
  position: relative; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px; padding: 60px 48px;
}
.contact h2 { font-size: clamp(28px, 3vw, 42px); }
.contact__lead { margin: 18px 0 0; max-width: 440px; font-size: 17px; line-height: 1.6; color: var(--text-2); }
.meeting { margin-top: 32px; }
.meeting__list { margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.meeting__list li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; font-size: 15px; line-height: 1.5; color: var(--text-strong); }
.meeting__list .num { color: var(--accent); padding-top: 2px; }
.contact__links { margin-top: 32px; display: grid; gap: 12px; font-size: 16px; }
.contact__links a { display: flex; align-items: center; gap: 12px; }

.form { display: grid; gap: 14px; align-content: start; }
.field { display: grid; gap: 8px; font-size: 14px; color: var(--text-3b); }
.req { color: var(--accent); }
.input {
  padding: 15px 18px; border-radius: 12px; border: 1px solid var(--line-input);
  background: rgba(255, 255, 255, 0.03); color: var(--text);
  font-family: inherit; font-size: 15px; outline: none; transition: border-color .15s;
}
.input::placeholder { color: #807974; opacity: 1; }
.input:focus { border-color: var(--accent); }
.input[aria-invalid="true"] { border-color: var(--accent-hover); }
textarea.input { resize: vertical; }
.form__row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.form__error { font-size: 13px; color: var(--accent-hover); }
.form__error[hidden] { display: none; }
.form__submit {
  padding: 16px; border: none; border-radius: 12px; background: var(--accent); color: var(--bg);
  font-family: inherit; font-weight: 600; font-size: 15px; cursor: pointer; transition: background-color .15s;
}
.form__submit:hover { background: var(--accent-hover); }
.form__submit:disabled { cursor: default; }
.form__note { font-size: 12px; color: var(--caption); line-height: 1.5; }

/* ---------- FAQ ---------- */
.faq__grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 56px; align-items: start; }
.faq__list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line-card); border-radius: 16px; background: var(--card); padding: 22px 26px; }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  font-size: 17px; line-height: 1.4; color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent); font-size: 20px; flex-shrink: 0; }
.faq-item__a { margin-top: 16px; max-width: 720px; font-size: 15px; line-height: 1.65; color: var(--text-2); text-wrap: pretty; }

/* ---------- Footer ---------- */
.footer {
  padding: 40px var(--gutter); border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.footer__copy { font-family: var(--f-mono); font-size: 11px; color: var(--dim); }
.footer__legal {
  flex-basis: 100%; margin-top: 4px; padding-top: 18px; border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 4px; font-size: 12px; line-height: 1.5; color: var(--caption);
}
.footer__legal span:first-child { color: var(--text-2); }

/* ---------- Hidden blocks: diagnostic + calc ---------- */
.draft-tag {
  padding: 5px 10px; border: 1px dashed var(--accent-line-3); border-radius: 999px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
}
.two-col { margin-top: 40px; display: grid; gap: 20px; align-items: start; }
.diag .two-col { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }
.calc .two-col { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.diag__qs { display: grid; gap: 12px; }
.diag-q { padding: 22px 24px; }
.diag-q__head { display: flex; align-items: baseline; gap: 12px; }
.diag-q__title { font-size: 17px; font-weight: 500; }
.pills { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line-pill);
  background: transparent; color: var(--text-3b); font-family: inherit; font-size: 14px; cursor: pointer;
}
.pill[aria-pressed="true"] { background: var(--accent-bg-3); border-color: var(--accent); color: var(--text); }
.diag__map { position: sticky; top: 90px; padding: 28px; border-color: var(--accent-line); }
.diag__map-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.diag__progress { font-family: var(--f-mono); font-size: 12px; color: var(--text-3); }
.diag__empty { margin: 18px 0 0; font-size: 15px; line-height: 1.6; color: var(--text-2); }
.diag__block { margin-top: 22px; }
.diag__block .bullets { margin-top: 10px; }
.diag__note { margin-top: 22px; padding: 14px 16px; border-radius: 12px; background: var(--card-2); font-size: 14px; line-height: 1.5; color: var(--text-strong); }
.diag__cta { margin-top: 24px; width: 100%; padding: 15px; border-radius: 12px; font-size: 15px; }
.diag__hint { margin-top: 10px; font-size: 12px; color: var(--caption); }
.calc__form { padding: 28px; display: grid; gap: 18px; }
.calc__field { display: grid; gap: 8px; }
.calc__label { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; color: var(--text-3b); }
.calc__label .num { font-size: 11px; }
.calc__form .input { padding: 13px 16px; font-family: var(--f-mono); }
.calc__scen-label { font-size: 14px; color: var(--text-3b); }
.calc__scen .pills { margin-top: 10px; }
.calc__result { padding: 28px; border-color: var(--accent-line); }
.calc__tiles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.calc-tile { padding: 18px; border-radius: 14px; background: var(--card-2); }
.calc-tile--outline { margin-top: 12px; background: transparent; border: 1px solid var(--accent-line); }
.calc-tile__label { font-size: 13px; color: var(--text-3); }
.calc-tile__value { margin-top: 8px; font-family: var(--f-display); font-size: 24px; font-weight: 500; letter-spacing: -0.03em; }
.calc-tile__value--accent { color: var(--accent); }
.calc__note { margin: 18px 0 0; font-size: 13px; line-height: 1.55; color: var(--caption); }
.calc__result .btn { margin-top: 18px; padding: 13px 22px; font-size: 15px; }

/* ---------- Reveal on scroll ---------- */
/* translate на дочерних элементах, чтобы якорные переходы считали позицию секции без сдвига */
.reveal-init { opacity: 0; transition: opacity .7s var(--ease); }
.reveal-init > * { transform: translateY(22px); transition: transform .7s var(--ease); }
.reveal-init.is-visible { opacity: 1; }
.reveal-init.is-visible > * { transform: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; align-items: start; }
  .study__grid { grid-template-columns: 1fr; }
  .study-map .media { height: 420px; }
  .models__grid { grid-template-columns: 1fr; }
  .gov__grid { grid-template-columns: 1fr; gap: 40px; }
  .contact__grid { grid-template-columns: 1fr; gap: 40px; }
  .diag .two-col, .calc .two-col { grid-template-columns: 1fr; }
  .diag__map { position: static; }
}

@media (max-width: 860px) {
  .split-head, .enable__head { grid-template-columns: 1fr; gap: 18px; }
  .split-head p { margin: 0; }
  .enable__grid { grid-template-columns: 1fr; }
  .fit__grid, .faq__grid { grid-template-columns: 1fr; gap: 32px; }
  .models__grid { grid-template-columns: 1fr; }

  /* Case table → stacked cards */
  .case-row--head { display: none; }
  .case-row { grid-template-columns: 1fr; }
  .case-row > div + div { border-left: none; border-top: 1px solid var(--line); }
  .case-cell { padding: 20px; }
  .case-col-label { display: block; }
  .case-step { display: flex; align-items: baseline; gap: 12px; }
  .case-step__title { margin-top: 0; }
  .case-metrics { grid-template-columns: 1fr; }
}

/* Шапка: меню в одну строку рядом с логотипом, листается горизонтально */
@media (max-width: 960px) {
  .header { flex-wrap: nowrap; gap: 20px; }
  .nav {
    flex: 1 1 auto; min-width: 0; justify-content: flex-start;
    flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none;
    gap: 18px; margin-right: -28px; padding: 6px 28px 6px 0;
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 40px), transparent);
            mask-image: linear-gradient(to right, #000 calc(100% - 40px), transparent);
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { white-space: nowrap; }
}

@media (max-width: 720px) {
  :root { --gutter: 16px; --section-gap: 72px; }
  .header { padding: 12px 16px; }
  .nav { margin-right: -16px; padding-right: 16px; }
  .hero { padding-top: 64px; padding-bottom: 56px; }
  .hero__glow { width: 420px; height: 420px; right: -180px; top: -120px; }
  .hero__lead { font-size: 17px; }
  .fact__value { font-size: 28px; }
  .services__grid { grid-template-columns: 1fr; }
  .service { padding: 22px; }
  .enable-card { padding: 26px 22px; }
  .acc__btn { padding: 20px; }
  .acc__btn-main { gap: 14px; }
  .acc__title { font-size: 17px; }
  .sit__panel { padding: 20px 20px 24px; }
  .study-step { grid-template-columns: 1fr; }
  .study-step__result { border-left: none; border-top: 1px solid var(--line); }
  .study-map .media { height: 280px; }
  .fit .acc__btn { padding: 18px 20px; font-size: 16px; }
  .fit__panel { padding: 0 20px 20px; }
  .model__body { padding: 24px 22px; }
  .industry { flex-basis: min(360px, 84vw); height: 260px; }
  .expertise-card { flex-basis: min(360px, 84vw); }
  .expertise-card__body { padding: 24px 22px; }
  .project__body { padding: 22px 22px 26px; }
  .gov__points { grid-template-columns: 1fr; }
  .tech-chip { padding: 16px 20px; }
  .contact__box { border-radius: 22px; }
  .contact__grid { padding: 36px 20px; }
  .faq-item { padding: 18px 20px; }
  .faq-item summary { font-size: 16px; }
  .calc__tiles { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal-init, .reveal-init > * { opacity: 1; transform: none; transition: none; }
}