:root {
  --accent: #FFD60A;
  --ink: #16171B;
  --ink-soft: #4A4B52;
  --muted: #767A70;
  --bg: #F6F3EA;
  --bg-alt: #EFE9D8;
  --border: #E3DDC9;
  --panel: rgba(255, 255, 255, .55);
  --panel-solid: #FDFCF7;
  --font-head: 'Oswald', sans-serif;
  --font-body: 'Manrope', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --container: 1080px;
  --sidebar: 300px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; }

a { color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Sidebar (sticky nav, replaces top header) */

.shell {
  display: grid;
  grid-template-columns: var(--sidebar) 1fr;
  gap: 40px;
  align-items: start;
  max-width: var(--container);
  margin: 0 auto;
  padding: 60px 24px;
}

.side {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.side .side-card {
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.side .brand {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.35rem;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--ink);
  display: inline-block;
  padding: 3px 12px;
  border-radius: 8px;
}

.side .tagline {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin-top: 12px;
}

.side .proof-list {
  display: flex;
  flex-direction: column;
}

.side .proof-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.side .proof-item:first-child {
  padding-top: 0;
}

.side .proof-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.side .proof-item b {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
  color: var(--ink);
}

.side .proof-item span {
  display: block;
  margin-top: 2px;
  font-size: 0.68rem;
  line-height: 1.35;
  color: var(--muted);
}

.side nav {
  display: flex;
  flex-direction: column;
}

.side nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 9px 10px;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}

.side nav a:hover,
.side nav a.on {
  background: var(--accent);
  color: var(--ink);
  font-weight: 700;
}

.side .logos {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  line-height: 1.9;
}

.side .side-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 6px;
}

.side .btn {
  text-align: center;
}

@media (max-width: 1000px) {
  .shell {
    grid-template-columns: 1fr;
    padding: 40px 24px;
  }
  .side {
    position: static;
  }
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.75em 1.5em;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: 2px solid transparent;
}

.btn:hover { transform: translateY(-1px); }

.btn-accent {
  background: var(--accent);
  color: var(--ink);
}

.btn-accent:hover {
  box-shadow: 0 6px 18px rgba(255, 214, 10, 0.4);
}

.btn-outline {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--bg);
}

.btn-small {
  padding: 0.5em 1.1em;
  font-size: 0.85rem;
}

/* Hero */

.hero {
  position: relative;
  padding: 110px 0 80px;
  overflow: hidden;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 520px;
  gap: 60px;
  align-items: center;
}

.hero-text {
  text-align: left;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 0.9em;
}

.hero-sub {
  max-width: 520px;
  margin: 0 0 1.6em;
  font-size: 1.08rem;
  color: var(--ink-soft);
}

/* Hero visual: photo + floating result cards + connector lines */

.hero-visual {
  position: relative;
}

.hero-headline {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 0.6em;
}

.hero-trust {
  display: inline-block;
  margin: 0 0 1.4em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 999px;
}

.hero-photo-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: none;
}

.hero-lines line {
  stroke: var(--border);
}

.hero-photo {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
}

/* Wide desktop: shift photo right, free up gutters so cards float beside it without touching it */
@media (min-width: 1150px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 600px;
  }

  .hero-photo {
    width: 80%;
    margin: 0 6% 0 14%;
  }

  .hero-lines {
    display: block;
  }
}

.hero-stat {
  position: absolute;
  z-index: 2;
  background: var(--panel);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(22, 23, 27, 0.08);
}

.hero-stat strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.15rem;
  line-height: 1.1;
  white-space: nowrap;
}

.hero-stat span {
  display: block;
  font-size: 0.65rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.hero-stat-money {
  top: 14px;
  left: -14px;
}

.hero-stat-hours {
  top: 14px;
  right: -14px;
}

.hero-stat-latency {
  top: 34%;
  left: -18px;
}

.hero-stat-errors {
  top: 54%;
  right: -18px;
}

.hero-stat-response {
  bottom: 14px;
  left: -14px;
}

.hero-stat-recruit {
  bottom: 14px;
  right: -14px;
}

/* Wide desktop: cards float clear of the (now shifted) photo, no overlap */
@media (min-width: 1150px) {
  .hero-stat-money {
    top: 6%;
    left: -55px;
  }

  .hero-stat-hours {
    top: 6%;
    right: -32px;
  }

  .hero-stat-latency {
    top: 34%;
    left: -50px;
  }

  .hero-stat-errors {
    top: 54%;
    right: -39px;
  }

  .hero-stat-response {
    bottom: 8%;
    left: -46px;
  }

  .hero-stat-recruit {
    bottom: 8%;
    right: -53px;
  }
}

/* Marquee */

.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  padding: 18px 0;
}

.marquee-track {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  width: max-content;
  animation: marquee-scroll 28s linear infinite;
}

.marquee-track span {
  display: inline-flex;
  gap: 48px;
}

.marquee-track b {
  color: var(--accent);
  font-weight: 700;
}

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* Tablet: keep the two-column hero layout, just tighten sizing */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 40px;
  }

  .hero-stat {
    padding: 8px 12px;
  }

  .hero-stat strong {
    font-size: 1rem;
  }

  .hero-stat span {
    font-size: 0.6rem;
  }
}

/* Timeline (Путь) */

.tl {
  position: relative;
  margin-top: 2.5em;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.tl-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.tl-line {
  stroke: var(--border);
}

.tl-item {
  position: relative;
  z-index: 1;
  width: 78%;
}

.tl-item:nth-of-type(even) {
  margin-left: auto;
}

.tl-card {
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.tl-year {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 2.2rem;
  color: var(--accent);
  line-height: 0.9;
  margin-bottom: 0.3em;
}

.tl-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.3em;
}

.tl-who {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 0.6em;
}

.tl-card p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

@media (max-width: 700px) {
  .tl-item, .tl-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
  }
  .tl-svg { display: none; }
}

/* Sections */

.section {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.section-alt {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 40px;
  margin: 40px 0;
  border-top: none;
}

.hl {
  display: inline-block;
  vertical-align: middle;
  background: var(--accent);
  padding: 0 8px;
  line-height: 1;
  white-space: nowrap;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 640px;
}

.note {
  font-size: 0.95rem;
  color: var(--ink-soft);
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  padding: 0.9em 1.2em;
  border-radius: 0 6px 6px 0;
  max-width: 640px;
}

.section-alt .note {
  background: var(--bg);
}

.section-outro {
  margin-top: 2.5em;
  margin-bottom: 0;
  font-size: 1.05rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--border);
  padding-top: 1.75em;
}

/* Scoped gap fix: cash-engine's shared .section bottom padding (80px) plus
   asset-engine's shared .section-alt top margin (40px) stacked into ~120px
   of dead space. Overriding both by ID keeps every other .section untouched. */
#cash-engine {
  padding-bottom: 36px;
  padding-top: 40px;
}

#asset-engine {
  margin-top: 20px;
}

#path {
  padding-top: 40px;
}

@media (max-width: 1000px) {
  #cash-engine { padding-bottom: 28px; padding-top: 32px; }
  #asset-engine { margin-top: 16px; }
  #path { padding-top: 32px; }
}

@media (max-width: 760px) {
  #cash-engine { padding-bottom: 20px; padding-top: 24px; }
  #asset-engine { margin-top: 12px; }
  #path { padding-top: 24px; }
}

/* Cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 2.5em;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--panel-solid);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: 0 10px 30px rgba(22,23,27,0.08);
  transform: translateY(-2px);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75em;
}

.card-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.card-tags {
  display: flex;
  gap: 6px;
}

.card-tags span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 5px;
  color: var(--ink-soft);
}

.card-eyebrow {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--ink-soft);
  margin-bottom: 0.5em;
}

.card p {
  font-size: 0.95rem;
}

.card-result {
  border-top: 1px dashed var(--border);
  padding-top: 0.8em;
  margin-top: 1em;
}

.card-source {
  margin-top: 0.6em;
  margin-bottom: 0;
  font-size: 0.85rem;
}

.card-source a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
}

.card-source a:hover {
  color: var(--ink);
}

.card-source a::after {
  content: " →";
}

/* Case-card accordion: mobile-only. On desktop the toggle stays hidden
   and .card-details is always expanded (plain static content). */
.card-toggle {
  display: none;
}

.card-details {
  overflow: hidden;
}

.card-cta {
  display: flex;
  flex-direction: column;
  background: var(--accent);
  border-color: var(--ink);
  color: var(--ink);
  text-decoration: none;
}

.card-cta-badge {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 5px;
  padding: 3px 8px;
  margin-bottom: 0.9em;
}

.card-cta h3 {
  color: var(--ink);
  margin-bottom: 0.5em;
}

.card-cta p {
  color: var(--ink);
}

.card-cta-link {
  margin-top: auto;
  padding-top: 0.8em;
  font-weight: 700;
  color: var(--ink);
}

.card-cta-link::after {
  content: " →";
}

/* AI digital twin (asset-engine): scoped heading fix + two-column layout with video */

#asset-engine h2 {
  line-height: 1.4;
}

#asset-engine h2 .hl {
  line-height: 0.85;
  vertical-align: middle;
}

.twin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.twin-intro {
  margin-bottom: 0;
}

.twin-video {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
}

.twin-video-el {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-solid);
}

.twin-video-caption {
  margin-top: 0.6em;
  margin-bottom: 0;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.twin-detail,
.twin-link {
  margin-bottom: 0;
}

@media (min-width: 1001px) {
  .twin-grid {
    grid-template-columns: minmax(0, 1fr) minmax(210px, 260px);
    grid-template-areas:
      "title  video"
      "intro  video"
      "detail detail"
      "link   link"
      "button button";
    gap: 20px 36px;
    align-items: start;
  }

  .twin-title { grid-area: title; }
  .twin-intro { grid-area: intro; }
  .twin-video { grid-area: video; max-width: none; margin: 0; }
  .twin-detail { grid-area: detail; }
  .twin-link { grid-area: link; }
  .twin-button { grid-area: button; justify-self: start; }
}

/* Contact */

.section-contact {
  text-align: center;
}

.section-contact p {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  color: var(--ink-soft);
}

.contact-note {
  max-width: 520px;
  margin-top: 0.9em;
  margin-bottom: 0;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.85rem;
  color: var(--muted);
}

#contact {
  padding-bottom: 48px;
}

@media (max-width: 760px) {
  #contact { padding-bottom: 36px; }
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.footer-row a {
  text-decoration: none;
}

.footer-row a:hover {
  color: var(--ink);
}

/* Scroll reveal */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .card-details,
  .card-toggle-icon {
    transition: none;
  }
}

/* Mobile: stack the hero, cards drop below the photo as a static grid */

@media (max-width: 680px) {
  .hero { padding: 90px 0 50px; }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-text {
    text-align: center;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-visual {
    max-width: 300px;
    margin: 0 auto;
  }

  .hero-lines {
    display: none;
  }

  .hero-stats {
    position: static;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 8px;
    margin-top: 16px;
  }

  .hero-stat {
    position: static;
    padding: 8px 10px;
  }

  .hero-stat strong {
    font-size: 0.95rem;
    white-space: normal;
  }

  .hero-stat span {
    font-size: 0.6rem;
    white-space: normal;
  }
}

@media (max-width: 340px) {
  .hero-stats {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  .section { padding: 56px 0; }

  .card-grid { grid-template-columns: 1fr; }

  /* Case cards: collapse Проблема/Решение behind a tap, keep Результат visible */
  #cash-engine .card-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0.7em 0 0;
    padding: 0;
    border: none;
    background: none;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--ink-soft);
    cursor: pointer;
  }

  #cash-engine .card-toggle-icon {
    display: inline-block;
    line-height: 1;
    transition: transform 0.2s ease;
  }

  #cash-engine .card-toggle[aria-expanded="true"] .card-toggle-icon {
    transform: rotate(180deg);
  }

  #cash-engine .card-details {
    max-height: 0;
    transition: max-height 0.3s ease;
  }

  #cash-engine .card-details.is-open {
    max-height: 600px;
  }

  #cash-engine .card-details p:first-child {
    padding-top: 0.7em;
  }
}