/* ============================================================
   LEAN\ПРАКТИКА — тёмный индустриальный стиль.
   Цветовая схема: тёмный монохром + сигнальный красно-оранжевый акцент.
   Шрифты: Oswald (дисплей) + Inter (текст) + JetBrains Mono.
   ============================================================ */

:root {
  --bg: #0b0c0e;
  --surface: #121316;
  --surface-2: #17181c;
  --ink: #f4f5f7;
  --ink-2: #a9aeb6;
  --ink-3: #6f747c;
  --accent: #ff3e1b;
  --accent-2: #ff5e3b;
  --accent-glow: rgba(255, 62, 27, 0.3);
  --green: #2fbf71;
  --green-glow: rgba(47, 191, 113, 0.22);
  --amber: #e6b23c;
  --amber-glow: rgba(230, 178, 60, 0.2);
  --line: #26282e;
  --line-strong: #363940;
  --radius: 2px;
  --radius-sm: 2px;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.02) inset;
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.45);
  --font-display: "Oswald", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: var(--bg); }

.wrap { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

/* ---------- Метки-перекрестия (регистрационные метки) ---------- */
.cross { position: relative; }
.cross::before,
.cross::after {
  content: "+";
  position: absolute;
  font: 400 13px/1 var(--font-mono);
  color: var(--ink-3);
  z-index: 2;
}
.cross::before { top: -7px; left: -7px; }
.cross::after { bottom: -7px; right: -7px; }

/* ---------- Светодиодные индикаторы ---------- */
.led {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  flex: none;
  position: relative;
}
.led::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  opacity: 0.4;
  animation: led-pulse 2s ease-in-out infinite;
}
.led.green { background: var(--green); box-shadow: 0 0 10px var(--green-glow); }
.led.green::after { background: var(--green); }
.led.amber { background: var(--amber); box-shadow: 0 0 10px var(--amber-glow); }
.led.amber::after { background: var(--amber); }
.led.accent { background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.led.accent::after { background: var(--accent); }
@keyframes led-pulse {
  0%, 100% { transform: scale(0.6); opacity: 0.25; }
  50% { transform: scale(1.2); opacity: 0.45; }
}

/* ---------- Типографика ---------- */
.eyebrow {
  margin: 0 0 22px;
  font: 500 12px/1.4 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--line-strong);
  flex: none;
}
.eyebrow-index { color: var(--accent); font-weight: 600; }
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  margin: 0;
  color: var(--ink);
}
h1 { font-size: clamp(44px, 7.4vw, 104px); line-height: 1.0; }
h2 { font-size: clamp(30px, 3.8vw, 54px); line-height: 1.06; }
h3 { font-size: clamp(17px, 1.7vw, 21px); line-height: 1.2; font-weight: 500; letter-spacing: 0.05em; }
h1 em { font-style: normal; color: var(--accent); }

/* ---------- Кнопки ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 30px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font: 500 13px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.button:hover { transform: translateY(-2px); border-color: var(--ink-3); background: var(--surface); }
.button-accent { background: var(--accent); border-color: var(--accent); color: #101012; font-weight: 600; }
.button-accent:hover { background: var(--accent-2); border-color: var(--accent-2); box-shadow: 0 10px 34px var(--accent-glow); }
.button-lg { min-height: 60px; padding: 0 40px; font-size: 14px; }

/* ---------- Шапка ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 14, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: border-color 0.2s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line-strong); }
.nav {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo { display: inline-flex; align-items: center; }
.logo-text {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}
.logo-slash { color: var(--accent); margin: 0 2px; font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a:not(.button) {
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  transition: color 0.15s ease;
}
.nav-links a:not(.button):hover { color: var(--ink); }
.nav-links .button { min-height: 44px; padding: 0 22px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 128px 0 104px; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.5;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 32% 36%, #000 0%, transparent 72%);
  mask-image: radial-gradient(ellipse 90% 80% at 32% 36%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero-beams {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-beams span {
  position: absolute;
  left: -20%;
  width: 140%;
  height: 1px;
  background: linear-gradient(90deg, transparent 5%, var(--accent-glow) 38%, rgba(255, 62, 27, 0.6) 50%, var(--accent-glow) 62%, transparent 95%);
  transform: rotate(-24deg);
}
.hero-beams span:nth-child(1) { top: 16%; }
.hero-beams span:nth-child(2) { top: 46%; opacity: 0.5; }
.hero-beams span:nth-child(3) { top: 76%; opacity: 0.22; }
.hero-inner { position: relative; }
.hero-inner h1 { max-width: 900px; margin-bottom: 30px; }
.hero-sub {
  max-width: 560px;
  margin: 0 0 40px;
  font-size: 18px;
  font-weight: 300;
  color: var(--ink-2);
  line-height: 1.6;
}
.hero-actions { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.hero-note {
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  transition: color 0.15s ease;
}
.hero-note:hover { color: var(--accent); }
.hero-meta {
  list-style: none;
  display: flex;
  gap: 0;
  margin: 84px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.hero-meta li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 32px 0 0;
  margin-right: 32px;
  border-right: 1px solid var(--line);
  padding-left: 0;
}
.hero-meta li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.hero-meta li + li { padding-left: 32px; }
.hero-meta b {
  font: 600 30px/1 var(--font-mono);
  letter-spacing: -0.02em;
  color: var(--ink);
}
.hero-meta span {
  font: 400 11px/1.45 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Секции ---------- */
.section { padding: 112px 0; }
.section.light {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-header { max-width: 720px; margin-bottom: 56px; }
.section-header h2 { margin-bottom: 20px; }
.section-subtitle { margin: 0; font-size: 17px; font-weight: 300; color: var(--ink-2); line-height: 1.6; }

/* ---------- Why-Why ---------- */
.why-layout { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.why-visual { display: flex; flex-direction: column; gap: 26px; }
.why-identity {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  align-self: flex-start;
  padding: 12px 20px 12px 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.why-wolf {
  width: 44px; height: 44px;
  object-fit: contain;
  padding: 6px;
  border-radius: var(--radius);
  background: #000;
  border: 1px solid var(--line);
}
.why-label { font: 500 14px/1 var(--font-mono); letter-spacing: 0.04em; color: var(--ink); }
.interface-frame {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.interface-frame img {
  width: 100%;
  max-height: 52vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}
.why-copy > p:not(.eyebrow) { max-width: 480px; margin: 22px 0 32px; font-size: 17px; font-weight: 300; color: var(--ink-2); line-height: 1.65; }
.why-status { margin: 26px 0 0; }
.feature-list { list-style: none; padding: 0; margin: 0 0 38px; display: flex; flex-direction: column; }
.feature-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--ink-2);
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.feature-list li:first-child { border-top: 1px solid var(--line); }
.tick {
  display: inline-block;
  width: 14px; height: 2px;
  background: var(--accent);
  flex: none;
}

/* ---------- Источники данных ---------- */
.product-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  align-self: flex-start;
  font: 500 10px/1 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-2);
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.flow { display: grid; grid-template-columns: minmax(0, 1fr) 76px minmax(250px, 330px); align-items: stretch; }
.flow-sources { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.source {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 24px 26px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.source:hover {
  transform: translateX(4px);
  border-left-color: var(--accent);
  border-color: var(--line-strong);
  border-left: 2px solid var(--accent);
  box-shadow: var(--shadow-lg);
}
.source .product-status { margin-bottom: 22px; }
.source h3 { margin-bottom: 10px; }
.product-desc { margin: 0; font-size: 15px; font-weight: 300; color: var(--ink-2); line-height: 1.6; }
.product-card-visual {
  margin: -24px -26px 22px;
  width: calc(100% + 52px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--surface-2);
}
.product-card-visual img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  display: block;
  filter: grayscale(0.35) contrast(1.04);
  transition: transform 0.4s ease;
}
.source:hover .product-card-visual img { transform: scale(1.03); }

/* ---------- Связь источников с ядром ---------- */
.flow-link { position: relative; min-width: 0; }
.flow-link svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.flow-link path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 0.9;
  vector-effect: non-scaling-stroke;
}
.flow-link::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 7px solid var(--accent);
}
.flow-label {
  position: absolute;
  top: calc(50% - 26px);
  left: 50%;
  transform: translateX(-50%);
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
}
.flow-target { display: flex; align-items: center; min-width: 0; }
.flow-target-inner {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.flow-wolf {
  width: 52px; height: 52px;
  object-fit: contain;
  padding: 7px;
  border-radius: var(--radius);
  background: #000;
  border: 1px solid var(--line);
  margin-bottom: 8px;
}
.flow-target-name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}
.flow-target-role {
  font: 500 11px/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: -4px 0 10px;
}
.flow-divider { display: none; }
.flow-note {
  margin: 34px 0 0;
  font: 400 12px/1.6 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Подход ---------- */
.approach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.approach-item {
  border-top: 1px solid var(--line-strong);
  padding-top: 26px;
  transition: border-color 0.2s ease;
}
.approach-item:hover { border-top-color: var(--accent); }
.approach-number {
  display: inline-block;
  margin-bottom: 22px;
  font: 600 13px/1 var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--accent);
}
.approach-item h3 { margin-bottom: 12px; }
.approach-item p { margin: 0; font-size: 15px; font-weight: 300; color: var(--ink-2); line-height: 1.6; }

/* ---------- CTA ---------- */
.cta { position: relative; background: var(--surface); border-bottom: 1px solid var(--line); padding: 104px 0; overflow: hidden; }
.cta::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: repeating-linear-gradient(45deg, var(--accent) 0 14px, transparent 14px 28px);
  opacity: 0.85;
}
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 48px; }
.cta-copy { max-width: 680px; }
.cta h2 { margin-bottom: 0; }

/* ---------- Подвал ---------- */
.site-footer { padding: 42px 0; background: var(--bg); }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 14px;
  color: var(--ink-2);
}
.footer-copy { font: 400 12px/1.5 var(--font-mono); letter-spacing: 0.04em; color: var(--ink-3); }
.footer-links { display: flex; gap: 28px; }
.footer-links a {
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  transition: color 0.15s ease;
}
.footer-links a:hover { color: var(--accent); }

/* ---------- Анимация появления ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Адаптив ---------- */
@media (max-width: 1020px) {
  .flow { grid-template-columns: 1fr; }
  .flow-link { display: none; }
  .flow-divider {
    display: block;
    text-align: center;
    padding: 18px 0;
    font: 500 11px/1 var(--font-mono);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
  }
  .flow-target { margin-top: 4px; }
}
@media (max-width: 960px) {
  .why-layout { grid-template-columns: 1fr; gap: 44px; }
  .approach-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .hero { padding: 96px 0 88px; }
  .hero-meta { flex-direction: column; gap: 0; margin-top: 64px; }
  .hero-meta li { border-right: 0; border-bottom: 1px solid var(--line); padding: 16px 0; margin-right: 0; }
  .hero-meta li + li { padding-left: 0; }
  .hero-meta li:last-child { border-bottom: 0; }
}
@media (max-width: 720px) {
  .wrap { width: min(100% - 28px, 1180px); }
  .nav { height: 68px; }
  .nav-links a:not(.button) { display: none; }
  .nav-links { gap: 18px; }
  .section { padding: 84px 0; }
  .source { padding: 22px; }
  .product-card-visual { margin: -22px -22px 20px; width: calc(100% + 44px); }
  .cta { padding: 80px 0; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}