/* Sigma Machine Vision — промышленная инспекция на нейросетевых моделях */

:root {
  color-scheme: dark;

  --bg:        #080a0c;
  --bg-2:      #0d1216;
  --panel:     #111820;
  --panel-2:   #16202a;
  --line:      #1d2a35;
  --line-2:    #263846;

  --ink:       #e6edf3;
  --ink-2:     #9fb0bf;
  --ink-3:     #61748a;

  --acc:       #b6ff2b;
  --acc-dim:   #7fb01e;
  --cyan:      #38d6ff;
  --warn:      #ff7a3d;

  --mono: ui-monospace, "Cascadia Mono", "Cascadia Code", Consolas,
          "DejaVu Sans Mono", "Liberation Mono", "Courier New", monospace;
  --sans: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
          "PT Sans", "DejaVu Sans", sans-serif;

  --maxw: 1240px;
  --gut: clamp(20px, 4vw, 56px);
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg:      #eceee9;
    --bg-2:    #f5f6f3;
    --panel:   #ffffff;
    --panel-2: #f2f4f0;
    --line:    #d3d8d0;
    --line-2:  #bcc4b8;
    --ink:     #10161b;
    --ink-2:   #47566180;
    --ink-2:   #4b5a66;
    --ink-3:   #78868f;
    --acc:     #4c7a00;
    --acc-dim: #6a9b12;
    --cyan:    #0d6f92;
  }
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* фоновая сетка — «миллиметровка» приборного ПО */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--line) 55%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--line) 55%, transparent) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 120% 80% at 50% 0%, #000 20%, transparent 75%);
  opacity: .55;
}

body > * { position: relative; z-index: 1; }

.wrap { width: min(100% - var(--gut) * 2, var(--maxw)); margin-inline: auto; }

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--acc);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--acc);
  flex: none;
}

/* ─── шапка ─────────────────────────────────────────── */

.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar__in {
  display: flex; align-items: center; gap: 32px;
  height: 66px;
}
.brand {
  display: flex; align-items: center; gap: 11px;
  text-decoration: none; flex: none;
}
.brand__mark { width: 26px; height: 26px; flex: none; }
.brand__txt {
  font-family: var(--mono);
  font-size: 14px; letter-spacing: .04em;
  font-weight: 600;
}
.brand__txt span { color: var(--ink-3); font-weight: 400; }

.nav { display: flex; gap: 26px; margin-left: auto; align-items: center; }
.nav a {
  font-family: var(--mono);
  font-size: 12.5px; letter-spacing: .05em;
  text-decoration: none; color: var(--ink-2);
  padding: 6px 0; position: relative;
  transition: color .18s;
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--acc); transition: right .25s ease;
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { right: 0; }
.nav a[aria-current] { color: var(--ink); }
.nav a[aria-current]::after { right: 0; }

.nav__cta {
  font-family: var(--mono); font-size: 12.5px;
  border: 1px solid var(--line-2); padding: 8px 14px;
  text-decoration: none; color: var(--ink);
  transition: border-color .2s, background .2s;
}
.nav__cta:hover { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 10%, transparent); }

@media (max-width: 860px) {
  .nav { gap: 16px; }
  .nav a { font-size: 11.5px; }
  .nav__cta { display: none; }
}
@media (max-width: 620px) {
  .nav a:not(.nav__cta) { display: none; }
  .nav a.nav--keep { display: block; }
}

/* ─── герой ─────────────────────────────────────────── */

.hero { padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 72px); }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 940px) { .hero__grid { grid-template-columns: 1fr; } }

.hero h1 {
  font-size: clamp(30px, 5.2vw, 58px);
  margin: 20px 0 22px;
}
.hero h1 em {
  font-style: normal;
  color: var(--acc);
}
.hero__lead {
  font-size: clamp(16px, 1.5vw, 18.5px);
  color: var(--ink-2);
  max-width: 54ch;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

.btn {
  font-family: var(--mono); font-size: 13px; letter-spacing: .04em;
  padding: 13px 22px; text-decoration: none;
  border: 1px solid transparent; display: inline-flex; align-items: center; gap: 9px;
  transition: transform .15s, background .2s, border-color .2s;
}
.btn--primary { background: var(--acc); color: #08120a; font-weight: 600; }
.btn--primary:hover { transform: translateY(-2px); }
.btn--ghost { border-color: var(--line-2); color: var(--ink); }
.btn--ghost:hover { border-color: var(--acc); color: var(--acc); }

/* ─── видоискатель ──────────────────────────────────── */

.scope {
  border: 1px solid var(--line-2);
  background: linear-gradient(160deg, var(--panel), var(--bg-2));
  padding: 12px;
  position: relative;
}
.scope__head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em;
  color: var(--ink-3); text-transform: uppercase;
  padding-bottom: 10px;
}
.scope__dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--acc); margin-right: 7px;
  animation: blink 1.9s steps(1) infinite;
}
@keyframes blink { 0%, 60% { opacity: 1; } 61%, 100% { opacity: .25; } }
.scope svg { display: block; width: 100%; height: auto; }
.scope__foot {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  margin-top: 12px; background: var(--line);
  border: 1px solid var(--line);
}
.scope__cell { background: var(--panel); padding: 10px 12px; }
.scope__cell b {
  display: block; font-family: var(--mono); font-size: 17px;
  color: var(--ink); font-weight: 600;
}
.scope__cell span {
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em;
  color: var(--ink-3); text-transform: uppercase;
}

/* анимация детекции */
.det { opacity: 0; animation: det-in .5s ease forwards; }
.det--1 { animation-delay: .7s; }
.det--2 { animation-delay: 1.5s; }
.det--3 { animation-delay: 2.3s; }
@keyframes det-in { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: scale(1); } }
.scanline { animation: scan 4.5s cubic-bezier(.4,0,.6,1) infinite; }
@keyframes scan { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(268px); } }

@media (prefers-reduced-motion: reduce) {
  .det, .scanline, .scope__dot { animation: none; opacity: 1; }
  html { scroll-behavior: auto; }
}

/* ─── ленты и секции ────────────────────────────────── */

.strip {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
  padding: 18px 0;
  overflow: hidden;
}
.strip__row {
  display: flex; gap: 40px; align-items: center;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em;
  color: var(--ink-3); text-transform: uppercase;
  flex-wrap: wrap; justify-content: center;
}
.strip__row i { color: var(--acc-dim); font-style: normal; }

section { padding: clamp(56px, 8vw, 104px) 0; }
.sec__head { max-width: 62ch; margin-bottom: clamp(32px, 4vw, 52px); }
.sec__head h2 {
  font-size: clamp(24px, 3.4vw, 38px);
  margin: 18px 0 16px;
}
.sec__head p { color: var(--ink-2); }

/* ─── карточки ──────────────────────────────────────── */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.card {
  background: var(--panel);
  padding: clamp(22px, 2.6vw, 32px);
  transition: background .25s;
  position: relative;
}
.card:hover { background: var(--panel-2); }
.card__no {
  font-family: var(--mono); font-size: 11px; color: var(--acc);
  letter-spacing: .1em;
}
.card h3 { font-size: 17.5px; margin: 14px 0 10px; }
.card p { color: var(--ink-2); font-size: 15px; }
.card__meta {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line-2);
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-3);
  letter-spacing: .04em;
}

/* ─── отрасли ───────────────────────────────────────── */

.inds { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.ind {
  background: var(--panel);
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(16px, 3vw, 36px);
  padding: clamp(20px, 2.4vw, 28px) clamp(18px, 2.4vw, 30px);
  align-items: start;
  transition: background .25s;
}
.ind:hover { background: var(--panel-2); }
.ind__no {
  font-family: var(--mono); font-size: 12px; color: var(--acc-dim);
  padding-top: 4px; letter-spacing: .08em;
}
.ind h3 { font-size: 17px; margin-bottom: 8px; }
.ind__sub { color: var(--ink-3); font-size: 14px; font-family: var(--mono); }
.ind__body p { color: var(--ink-2); font-size: 15px; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: .04em;
  border: 1px solid var(--line-2); padding: 4px 9px; color: var(--ink-3);
}
@media (max-width: 820px) {
  .ind { grid-template-columns: 34px minmax(0, 1fr); }
  .ind__body { grid-column: 2; }
}

/* ─── шаги ──────────────────────────────────────────── */

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.step { background: var(--panel); padding: 26px 24px; }
.step__n {
  font-family: var(--mono); font-size: 30px; color: var(--line-2);
  line-height: 1; font-weight: 600;
}
.step h3 { font-size: 15.5px; margin: 14px 0 9px; }
.step p { font-size: 14.5px; color: var(--ink-2); }

/* ─── метрики ───────────────────────────────────────── */

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.metric { background: var(--panel); padding: 26px 24px; }
.metric b {
  display: block; font-family: var(--mono); font-size: clamp(26px, 3.2vw, 36px);
  color: var(--acc); font-weight: 600; letter-spacing: -.02em;
}
.metric span { font-size: 14px; color: var(--ink-2); display: block; margin-top: 8px; }
.metric i { display: block; font-style: normal; font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-top: 10px; letter-spacing: .06em; }

/* ─── таблица ───────────────────────────────────────── */

.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); }
table { border-collapse: collapse; width: 100%; min-width: 640px; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
th {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-3); background: var(--bg-2);
  font-weight: 500;
}
td { color: var(--ink-2); }
td:first-child { color: var(--ink); font-family: var(--mono); font-size: 13.5px; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--panel-2); }

/* ─── врезка ────────────────────────────────────────── */

.note {
  border-left: 2px solid var(--acc);
  background: var(--bg-2);
  padding: 22px 26px;
  color: var(--ink-2);
  font-size: 15px;
}
.note b { color: var(--ink); }

/* ─── призыв ────────────────────────────────────────── */

.cta {
  border: 1px solid var(--line-2);
  background: linear-gradient(140deg, var(--panel), var(--bg-2) 70%);
  padding: clamp(30px, 5vw, 56px);
  display: grid; gap: 26px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}
@media (max-width: 780px) { .cta { grid-template-columns: 1fr; } }
.cta h2 { font-size: clamp(21px, 2.8vw, 30px); margin-bottom: 12px; }
.cta p { color: var(--ink-2); max-width: 56ch; }

/* ─── подвал ────────────────────────────────────────── */

.foot { border-top: 1px solid var(--line); padding: 44px 0 34px; background: var(--bg-2); }
.foot__grid {
  display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: 32px; margin-bottom: 34px;
}
@media (max-width: 760px) { .foot__grid { grid-template-columns: 1fr 1fr; } }
.foot h4 {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 14px; font-weight: 500;
}
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.foot a { color: var(--ink-2); text-decoration: none; font-size: 14.5px; }
.foot a:hover { color: var(--acc); }
.foot__note { color: var(--ink-3); font-size: 14px; max-width: 46ch; }
.foot__bottom {
  border-top: 1px solid var(--line); padding-top: 20px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); letter-spacing: .05em;
}

/* ─── форма ─────────────────────────────────────────── */

.form { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-3);
}
.field input, .field textarea, .field select {
  background: var(--bg-2); border: 1px solid var(--line-2); color: var(--ink);
  padding: 12px 14px; font-family: var(--sans); font-size: 15px; width: 100%;
  border-radius: 0;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--acc);
}
.field textarea { min-height: 130px; resize: vertical; }
.form__hint { font-size: 13px; color: var(--ink-3); }

/* ─── прочее ────────────────────────────────────────── */

.lede { font-size: clamp(17px, 1.8vw, 20px); color: var(--ink-2); max-width: 60ch; }
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(24px, 4vw, 48px); align-items: start; }
.stack { display: grid; gap: 18px; }
.mono { font-family: var(--mono); }
.dim { color: var(--ink-3); }
.diagram { border: 1px solid var(--line); background: var(--bg-2); padding: clamp(16px, 2.5vw, 28px); }
.diagram svg { display: block; width: 100%; height: auto; }
.pagehead { padding: clamp(44px, 6vw, 76px) 0 clamp(28px, 4vw, 44px); border-bottom: 1px solid var(--line); }
.pagehead h1 { font-size: clamp(28px, 4.6vw, 48px); margin: 18px 0 18px; }