/* Layout: лист технического чертежа — рамка героя со штампом по ГОСТ 2.104, ниже спецификация: строки, уровни, этапы */
:root {
  --paper: #e7edf2;          /* совпадает с фоном иллюстрации */
  --surface: #f3f6f8;
  --plate: #dbe3e9;
  --ink: #141d26;
  --ink-2: #4a5968;
  --line: #c3cdd6;
  --line-strong: #8c9aa7;
  --signal: #e2580f;         /* сигнальный оранжевый, как на иллюстрации */
  --signal-ink: #ad410a;
  --on-signal: #141d26;
  --steel: #2d5376;
  --block: #141d26;
  --block-fg: #e7ecf0;
  --block-2: #9fb0bf;
  --block-line: #2f3d4a;
  --block-surface: #1b2631;
  --img-ground: #e7edf2;
  --img-ink: #141d26;
  --ok: #2f7d4f;
  --plan: #9a6a00;
  --header-bg: rgba(231, 237, 242, .9);
  --shadow: 0 1px 0 rgba(20, 29, 38, .04), 0 18px 40px -24px rgba(20, 29, 38, .35);
  --backdrop: rgba(12, 18, 24, .55);

  --f-display: "Geologica", "Golos Text", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-body: "Golos Text", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f151b; --surface: #151d25; --plate: #1c2630;
    --ink: #e5eaee; --ink-2: #9aa8b5; --line: #29363f; --line-strong: #4d5e6d;
    --signal: #ff7a33; --signal-ink: #ff8f52; --on-signal: #141d26; --steel: #86abcd;
    --block: #0a0f14; --block-fg: #e5eaee; --block-2: #8e9dab; --block-line: #25313c; --block-surface: #121a22;
    --ok: #5cc28a; --plan: #e0aa3e;
    --header-bg: rgba(15, 21, 27, .88);
    --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 18px 40px -24px rgba(0, 0, 0, .8);
    --backdrop: rgba(0, 0, 0, .7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f151b; --surface: #151d25; --plate: #1c2630;
  --ink: #e5eaee; --ink-2: #9aa8b5; --line: #29363f; --line-strong: #4d5e6d;
  --signal: #ff7a33; --signal-ink: #ff8f52; --on-signal: #141d26; --steel: #86abcd;
  --block: #0a0f14; --block-fg: #e5eaee; --block-2: #8e9dab; --block-line: #25313c; --block-surface: #121a22;
  --ok: #5cc28a; --plan: #e0aa3e;
  --header-bg: rgba(15, 21, 27, .88);
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 18px 40px -24px rgba(0, 0, 0, .8);
  --backdrop: rgba(0, 0, 0, .7);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 600; margin: 0; text-wrap: balance; letter-spacing: -.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }
[hidden] { display: none !important; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 50; background: var(--ink); color: var(--paper); padding: 10px 14px; border-radius: 4px; text-decoration: none; }
.skip-link:focus { top: 12px; }

.label {
  font: 500 12px/1.4 var(--f-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.label-signal { color: var(--signal-ink); }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 22px;
  border-radius: 4px; border: 1px solid transparent;
  font: 600 16px/1 var(--f-body); text-decoration: none; cursor: pointer;
  transition: background-color .2s, border-color .2s, color .2s, transform .2s;
}
.btn-primary { background: var(--signal); color: var(--on-signal); }
.btn-primary:hover { background: var(--ink); color: var(--paper); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.btn .arrow { font-family: var(--f-mono); font-weight: 500; }

/* ---------- Шапка ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 30;
  background: var(--header-bg);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; gap: 24px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; }
.brand-mark {
  position: relative; display: grid; place-items: center;
  width: 42px; height: 42px; border: 1.5px solid var(--ink); border-radius: 3px;
  font: 700 19px/1 var(--f-display); letter-spacing: -.04em;
}
.brand-mark::after { content: ""; position: absolute; right: -1.5px; bottom: -1.5px; width: 12px; height: 12px; background: var(--signal); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font: 700 18px/1.1 var(--f-display); letter-spacing: -.02em; }
.brand-text span { font: 500 11px/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.main-nav { display: flex; gap: 26px; }
.main-nav a { text-decoration: none; font-size: 15px; font-weight: 500; color: var(--ink-2); }
.main-nav a:hover { color: var(--ink); }
.header-cta { min-height: 42px; padding: 0 16px; font-size: 15px; }
.menu-toggle { display: none; background: none; border: 1px solid var(--line-strong); border-radius: 4px; min-height: 42px; padding: 0 14px; font-weight: 600; font-size: 15px; cursor: pointer; }
.mobile-menu { border-top: 1px solid var(--line); padding-block: 8px 16px; }
.mobile-menu a { display: block; padding: 12px 0; text-decoration: none; font-weight: 500; border-bottom: 1px solid var(--line); }
@media (max-width: 1020px) {
  .main-nav { display: none; }
  .menu-toggle { display: inline-flex; align-items: center; }
}
@media (max-width: 520px) {
  .header-cta { display: none; }
  .brand-text span { display: none; }
}

/* ---------- Секции ---------- */
.section { padding-block: clamp(64px, 9vw, 120px); }
section[id] { scroll-margin-top: 76px; }
.section-head { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(20px, 4vw, 64px); align-items: end; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head h2 { font-size: clamp(32px, 4.2vw, 56px); line-height: 1.05; margin-top: 14px; }
.section-head .lead { color: var(--ink-2); font-size: 18px; max-width: 520px; }
@media (max-width: 860px) { .section-head { grid-template-columns: 1fr; align-items: start; } }

/* ---------- Герой: лист чертежа ---------- */
.hero { padding-block: clamp(20px, 3vw, 36px) clamp(40px, 6vw, 72px); }
.sheet { position: relative; border: 1px solid var(--line-strong); padding: clamp(24px, 4vw, 52px) clamp(18px, 3.5vw, 48px) 0; }
.sheet::before, .sheet::after {
  content: ""; position: absolute; width: 14px; height: 14px; border-color: var(--ink); border-style: solid;
}
.sheet::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.sheet::after { top: -1px; right: -1px; border-width: 2px 2px 0 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 11fr) minmax(0, 13fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.hero-copy { min-width: 0; padding-bottom: clamp(20px, 3vw, 40px); }
.hero h1 {
  margin: 22px 0 26px;
  font-size: clamp(42px, 4.9vw, 74px);
  font-weight: 700; line-height: .95; letter-spacing: -.045em;
}
.hero h1 .stroke { color: var(--signal-ink); }
.hero h1 .nw { white-space: nowrap; }
.hero-lead { font-size: clamp(17px, 1.5vw, 19px); color: var(--ink-2); max-width: 34em; }
.hero-lead strong { color: var(--ink); font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.plant { position: relative; margin: 0; min-width: 0; }
.plant-frame { position: relative; background: var(--img-ground); border-radius: var(--radius); }
.plant-frame img { width: 100%; border-radius: var(--radius); }
.flow { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.flow path { fill: none; stroke: var(--signal); stroke-width: 3; stroke-dasharray: 2 12; stroke-linecap: round; vector-effect: non-scaling-stroke; animation: flow 1.6s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -28; } }
@media (prefers-reduced-motion: reduce) { .flow path { animation: none; } }
.hotspot {
  position: absolute; transform: translate(-50%, -50%);
  display: grid; place-items: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--img-ground); color: var(--img-ink);
  border: 2px solid var(--img-ink);
  font: 600 14px/1 var(--f-mono); text-decoration: none;
  box-shadow: 0 0 0 4px rgba(231, 237, 242, .7);
  transition: background-color .2s, color .2s, transform .2s;
}
.hotspot:hover, .hotspot:focus-visible { background: var(--signal); color: var(--on-signal); border-color: var(--on-signal); transform: translate(-50%, -50%) scale(1.08); }
.hotspot .tip {
  position: absolute; left: calc(100% + 8px); top: 50%; transform: translateY(-50%);
  white-space: nowrap; padding: 5px 8px; border-radius: 3px;
  background: var(--img-ink); color: var(--img-ground);
  font: 500 12px/1.2 var(--f-mono); letter-spacing: .02em;
  opacity: 0; pointer-events: none; transition: opacity .15s;
}
.hotspot.tip-left .tip { left: auto; right: calc(100% + 8px); }
.hotspot:hover .tip, .hotspot:focus-visible .tip { opacity: 1; }
.plant-legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 14px; }
.plant-legend a { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-size: 14px; color: var(--ink-2); }
.plant-legend a:hover { color: var(--ink); }
.plant-legend b { display: inline-grid; place-items: center; width: 22px; height: 22px; border: 1.5px solid var(--ink); border-radius: 50%; font: 600 11px/1 var(--f-mono); color: var(--ink); }

/* Штамп */
.stamp {
  display: grid; grid-template-columns: 1.3fr 1.3fr .7fr;
  margin: clamp(28px, 4vw, 44px) calc(-1 * clamp(18px, 3.5vw, 48px)) 0 auto;
  width: min(100% + 2 * clamp(18px, 3.5vw, 48px), 720px);
  border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line-strong);
}
.stamp > div { padding: 9px 12px; border-right: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); min-width: 0; }
.stamp > div:nth-child(3n) { border-right: 0; }
.stamp > div:nth-last-child(-n+3) { border-bottom: 0; }
.stamp span { display: block; font: 500 10px/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.stamp strong { display: block; font: 600 14px/1.35 var(--f-body); margin-top: 2px; overflow-wrap: anywhere; }
.stamp a { text-decoration: none; }
.stamp a:hover { color: var(--signal-ink); }
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { padding-bottom: 0; }
}
@media (max-width: 640px) {
  .stamp { grid-template-columns: 1fr 1fr; width: calc(100% + 2 * clamp(18px, 3.5vw, 48px)); }
  .stamp > div { border-right: 1px solid var(--line-strong) !important; border-bottom: 1px solid var(--line-strong) !important; }
  .stamp > div:nth-child(2n) { border-right: 0 !important; }
  .stamp > div:nth-last-child(-n+2) { border-bottom: 0 !important; }
  .hotspot { width: 28px; height: 28px; font-size: 12px; }
  .hotspot .tip { display: none; }
}

/* ---------- Факты ---------- */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.facts > div { padding: 26px 24px 26px 0; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.facts > div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.facts strong { font: 600 clamp(26px, 2.6vw, 34px)/1.05 var(--f-display); letter-spacing: -.03em; }
.facts span { color: var(--ink-2); font-size: 15px; line-height: 1.45; }
@media (max-width: 860px) {
  .facts { grid-template-columns: 1fr 1fr; }
  .facts > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .facts > div:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* ---------- Отрасли ---------- */
.industries { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px 28px; padding-block: 28px 0; }
.industries .label { margin-right: 4px; }
.industries li { font: 500 16px/1.3 var(--f-display); display: inline-flex; align-items: center; gap: 10px; }
.industries li::before { content: ""; width: 7px; height: 7px; background: var(--signal); flex: none; }
.industries ul { display: flex; flex-wrap: wrap; gap: 12px 28px; }

/* ---------- Боли ---------- */
.pains { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 clamp(20px, 3vw, 44px); }
.pain { border-top: 1px solid var(--line-strong); padding-block: 22px 34px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.pain p { font-size: 18px; line-height: 1.5; }
.pain .label { display: inline-flex; align-items: center; gap: 8px; }
.pain .label::before { content: ""; width: 8px; height: 8px; border: 1.5px solid var(--signal); }
@media (max-width: 960px) { .pains { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .pains { grid-template-columns: 1fr; } }

/* ---------- Решения: технологическая цепочка ---------- */
.solutions { background: var(--surface); border-block: 1px solid var(--line); }
.stages-scroll { overflow-x: auto; margin-inline: calc(-1 * var(--gutter)); padding-inline: var(--gutter); scrollbar-width: thin; }
.stages { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(124px, 1fr); min-width: 880px; }
.stages::before { content: ""; position: absolute; left: 20px; right: 20px; top: 21px; border-top: 2px dashed var(--line-strong); }
.stage-tab {
  position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
  padding: 0 12px 18px 0; background: none; border: 0; text-align: left; cursor: pointer;
  border-bottom: 3px solid transparent;
}
.stage-tab .num {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--line-strong);
  font: 600 15px/1 var(--f-mono); color: var(--ink-2);
  transition: background-color .2s, border-color .2s, color .2s;
}
.stage-tab .name { font: 500 15px/1.3 var(--f-display); color: var(--ink-2); }
.stage-tab:hover .num { border-color: var(--ink); color: var(--ink); }
.stage-tab:hover .name { color: var(--ink); }
.stage-tab[aria-selected="true"] { border-bottom-color: var(--signal); }
.stage-tab[aria-selected="true"] .num { background: var(--signal); border-color: var(--signal); color: var(--on-signal); }
.stage-tab[aria-selected="true"] .name { color: var(--ink); font-weight: 600; }
.stage-tab.cross .num { border-style: dashed; }

.stage-panel {
  margin-top: 28px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(22px, 3vw, 40px);
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.2fr) minmax(0, .95fr); gap: clamp(22px, 3vw, 44px);
}
.stage-panel h3 { font-size: clamp(24px, 2.4vw, 32px); line-height: 1.1; margin: 10px 0 14px; }
.stage-panel .task { color: var(--ink-2); }
.stage-panel h4 { margin: 0 0 12px; font: 500 12px/1.4 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.ticks li { position: relative; padding-left: 22px; line-height: 1.5; }
.ticks li + li { margin-top: 10px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .62em; width: 10px; height: 2px; background: var(--signal); }
.measure li { display: flex; gap: 10px; align-items: baseline; font-size: 16px; line-height: 1.45; }
.measure li + li { margin-top: 10px; }
.measure li::before { content: "→"; font-family: var(--f-mono); color: var(--signal-ink); flex: none; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; min-height: 28px; padding: 3px 10px; border: 1px solid var(--line-strong); border-radius: 3px; font: 500 12px/1.3 var(--f-mono); color: var(--ink-2); }
.sources { margin-top: 22px; }
.sources h4, .related h4 { margin-bottom: 10px; }
.related { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); }
.linkish {
  display: inline; background: none; border: 0; padding: 0; cursor: pointer;
  font-weight: 600; font-size: 15px; text-align: left; color: var(--ink);
  text-decoration: underline; text-decoration-color: var(--signal); text-underline-offset: 4px; text-decoration-thickness: 2px;
}
.linkish:hover { color: var(--signal-ink); }
.related .linkish { display: block; }
.related .linkish + .linkish { margin-top: 8px; }
.stage-note { margin-top: 20px; color: var(--ink-2); font-size: 15px; }
@media (max-width: 960px) { .stage-panel { grid-template-columns: 1fr 1fr; } .stage-panel .col-intro { grid-column: 1 / -1; } }
@media (max-width: 620px) { .stage-panel { grid-template-columns: 1fr; } }

/* ---------- Архитектура ---------- */
.dark { background: var(--block); color: var(--block-fg); }
.dark .label { color: var(--block-2); }
.dark .label-signal { color: var(--signal); }
.dark .section-head .lead { color: var(--block-2); }
.arch { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.layers { display: flex; flex-direction: column; min-width: 0; }
.layer {
  display: grid; grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.2fr); gap: 18px; align-items: center;
  padding: 18px 20px; border: 1px solid var(--block-line); border-radius: 4px; background: var(--block-surface);
}
.layer .lvl { font: 600 20px/1 var(--f-mono); color: var(--block-2); }
.layer h3 { font-size: 18px; line-height: 1.25; }
.layer p { font-size: 14px; color: var(--block-2); margin-top: 4px; line-height: 1.45; }
.layer .chips .chip { border-color: var(--block-line); color: var(--block-fg); }
.layer.core { border: 2px solid var(--signal); background: var(--block); padding: 24px 20px; }
.layer.core .lvl { color: var(--signal); }
.layer.core h3 { font-size: 21px; }
.link-row { display: flex; align-items: center; gap: 12px; padding: 10px 0 10px 30px; font: 500 12px/1.4 var(--f-mono); letter-spacing: .04em; color: var(--block-2); }
.link-row::before { content: ""; width: 2px; height: 26px; background: repeating-linear-gradient(var(--signal) 0 5px, transparent 5px 9px); flex: none; }
.link-row b { color: var(--block-fg); font-weight: 500; }
.arch-notes { display: flex; flex-direction: column; gap: 14px; }
.arch-note { border-top: 1px solid var(--block-line); padding-top: 16px; }
.arch-note h3 { font-size: 18px; margin-bottom: 8px; }
.arch-note p { color: var(--block-2); font-size: 15px; line-height: 1.55; }
@media (max-width: 960px) { .arch { grid-template-columns: 1fr; } }
@media (max-width: 680px) {
  .layer { grid-template-columns: 44px minmax(0, 1fr); }
  .layer .chips { grid-column: 1 / -1; }
  .layer .lvl { font-size: 16px; }
}

/* ---------- Опыт ---------- */
.case-list { border-top: 1px solid var(--line-strong); }
.case {
  display: grid; grid-template-columns: 210px minmax(0, 1.25fr) minmax(0, 1fr) auto; gap: clamp(16px, 2.5vw, 36px);
  padding-block: 28px; border-bottom: 1px solid var(--line); align-items: start;
}
.case-meta { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; min-width: 0; }
.status { display: inline-flex; align-items: center; gap: 7px; font: 500 12px/1.3 var(--f-mono); color: var(--ink-2); }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--steel); flex: none; }
.status.ok::before { background: var(--ok); }
.status.plan::before { background: transparent; border: 1.5px solid var(--plan); }
.case h3 { font-size: clamp(20px, 1.9vw, 24px); line-height: 1.2; }
.case-main p { color: var(--ink-2); margin-top: 8px; font-size: 16px; }
.case-main .tech { margin-top: 12px; font: 500 12px/1.5 var(--f-mono); color: var(--ink-2); letter-spacing: .02em; }
.case-plant { background: var(--surface); border-left: 3px solid var(--signal); padding: 14px 16px; border-radius: 0 4px 4px 0; min-width: 0; }
.case-plant .label { color: var(--signal-ink); }
.case-plant p { font-size: 15px; line-height: 1.5; margin-top: 6px; }
.case-more { white-space: nowrap; min-height: 42px; padding: 0 14px; font-size: 14px; }
.cases-note { margin-top: 22px; color: var(--ink-2); font-size: 15px; max-width: 760px; }

/* Собственный продукт: EduMS */
.product {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(22px, 3.5vw, 48px);
  padding: clamp(22px, 3vw, 40px); margin-bottom: clamp(44px, 6vw, 72px);
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius);
}
.case-meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; }
.product h3 { font-size: clamp(26px, 3vw, 38px); line-height: 1.08; margin: 14px 0 14px; }
.product-brief { color: var(--ink-2); font-size: 17px; max-width: 40em; margin-bottom: 20px; }
.product .case-plant { background: var(--paper); }
.product-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.product-specs { margin: 0; border: 1px solid var(--line-strong); align-self: start; background: var(--paper); }
.product-specs > div { display: grid; grid-template-columns: 118px minmax(0, 1fr); border-top: 1px solid var(--line); }
.product-specs > div:first-child { border-top: 0; }
.product-specs .specs-head { grid-template-columns: 1fr auto; padding: 10px 14px; background: var(--block); color: var(--block-fg); font: 500 11px/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; }
.product-specs dt { padding: 12px 14px; font: 500 11px/1.45 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); border-right: 1px solid var(--line); }
.product-specs dd { margin: 0; padding: 12px 14px; font-size: 15px; line-height: 1.45; }
@media (max-width: 960px) { .product { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .product-specs > div { grid-template-columns: 1fr; } .product-specs dt { border-right: 0; padding-bottom: 0; } }

/* Группы кейсов */
.case-group + .case-group { margin-top: clamp(40px, 5vw, 64px); }
.case-group-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 24px; align-items: end; margin-bottom: 16px; }
.case-group-head h3 { font-size: clamp(22px, 2.2vw, 28px); line-height: 1.15; }
.case-group-head p { grid-column: 1; color: var(--ink-2); font-size: 15px; }
.case-group-head .label { grid-column: 2; grid-row: 1 / span 2; font-variant-numeric: tabular-nums; }
@media (max-width: 600px) { .case-group-head { grid-template-columns: 1fr; } .case-group-head .label { grid-column: 1; grid-row: auto; } }
.dialog-link { margin-top: 24px; }
@media (max-width: 1080px) {
  .case { grid-template-columns: 180px minmax(0, 1fr) minmax(0, 1fr); }
  .case-more { grid-column: 2 / -1; justify-self: start; }
}
@media (max-width: 760px) {
  .case { grid-template-columns: 1fr; }
  .case-meta { flex-direction: row; flex-wrap: wrap; gap: 8px 16px; }
  .case-more { grid-column: auto; }
}

/* ---------- Команда ---------- */
.team { background: var(--surface); border-block: 1px solid var(--line); }
.lead-card {
  display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px);
  padding: clamp(22px, 3vw, 40px); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
}
.monogram {
  position: relative; aspect-ratio: 1; max-width: 100%;
  display: grid; place-items: center;
  background: var(--plate); border-radius: 4px;
  font: 700 clamp(72px, 9vw, 120px)/1 var(--f-display); letter-spacing: -.06em; color: var(--ink);
}
.monogram::before, .monogram::after { content: ""; position: absolute; background: var(--line-strong); }
.monogram::before { left: 12px; right: 12px; bottom: 16px; height: 1px; }
.monogram::after { top: 12px; bottom: 12px; right: 16px; width: 1px; }
.monogram span { position: absolute; font: 500 11px/1 var(--f-mono); letter-spacing: .08em; color: var(--ink-2); text-transform: uppercase; }
.monogram .m1 { left: 14px; top: 14px; }
.monogram .m2 { left: 14px; bottom: 24px; }
.lead-body h3 { font-size: clamp(26px, 2.8vw, 36px); margin: 10px 0 12px; }
.lead-body > p { color: var(--ink-2); max-width: 44em; }
.career { margin-top: 24px; display: grid; gap: 0; border-top: 1px solid var(--line); }
.career > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 16px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.career span { font: 500 13px/1.5 var(--f-mono); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.career p { font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.career strong { display: block; color: var(--ink); font-weight: 600; font-size: 16px; }
.lead-extra { margin-top: 18px; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 18px; }
.lead-extra p { font-size: 15px; color: var(--ink-2); line-height: 1.5; margin-top: 6px; }
.lead-extra a { color: var(--ink); font-weight: 600; text-decoration-color: var(--signal); text-underline-offset: 3px; }
@media (max-width: 1080px) { .lead-extra { grid-template-columns: 1fr 1fr; } .lead-extra > :first-child { grid-column: 1 / -1; } }
@media (max-width: 860px) {
  .lead-card { grid-template-columns: 1fr; }
  .monogram { max-width: 220px; }
  .lead-extra { grid-template-columns: 1fr; }
}
@media (max-width: 480px) { .career > div { grid-template-columns: 1fr; gap: 4px; } }

.roles { margin-top: 20px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.role { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.role h3 { font-size: 18px; line-height: 1.25; }
.role p { font-size: 15px; color: var(--ink-2); line-height: 1.5; }
.role.client { background: transparent; border: 1.5px dashed var(--line-strong); }
@media (max-width: 1080px) { .roles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .roles { grid-template-columns: 1fr; } }

.why42 { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 20px; align-items: center; margin-top: 20px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.why42 .big { font: 700 56px/1 var(--f-display); letter-spacing: -.05em; color: var(--signal-ink); }
.why42 p { color: var(--ink-2); font-size: 16px; max-width: 70em; }
.why42 strong { color: var(--ink); }

/* ---------- Этапы ---------- */
.process { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
.steps { counter-reset: step; }
.step { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 18px; padding-block: 24px; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step .n { font: 600 28px/1 var(--f-mono); color: var(--signal-ink); font-variant-numeric: tabular-nums; }
.step h3 { font-size: 22px; line-height: 1.2; }
.step p { color: var(--ink-2); margin-top: 8px; font-size: 16px; }
.step .out { margin-top: 12px; font-size: 15px; color: var(--ink); }
.step .out b { font: 500 11px/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin-right: 8px; }
.deliverables { position: sticky; top: 96px; background: var(--block); color: var(--block-fg); border-radius: var(--radius); padding: clamp(24px, 3vw, 36px); }
.deliverables .label { color: var(--signal); }
.deliverables h3 { font-size: clamp(24px, 2.4vw, 30px); line-height: 1.12; margin: 12px 0 20px; }
.deliverables li { position: relative; padding: 11px 0 11px 30px; border-top: 1px solid var(--block-line); font-size: 16px; line-height: 1.4; }
.deliverables li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 12px; height: 12px; border: 1.5px solid var(--signal); }
.deliverables .fine { margin-top: 18px; color: var(--block-2); font-size: 14px; }
@media (max-width: 960px) { .process { grid-template-columns: 1fr; } .deliverables { position: static; } }

/* ---------- Принципы ---------- */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.principle { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--surface); display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.principle h3 { font-size: 20px; line-height: 1.2; }
.principle p { color: var(--ink-2); font-size: 15px; line-height: 1.55; }
@media (max-width: 960px) { .principles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .principles { grid-template-columns: 1fr; } }

/* ---------- Вопросы ---------- */
.faq { max-width: 880px; border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; align-items: center;
  padding-block: 20px; font: 600 clamp(17px, 1.6vw, 20px)/1.35 var(--f-display);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 500 22px/1 var(--f-mono); color: var(--signal-ink); transition: transform .2s; flex: none; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding-bottom: 22px; color: var(--ink-2); max-width: 46em; }

/* ---------- Контакты ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, .9fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.contact-grid h2 { font-size: clamp(32px, 4vw, 52px); line-height: 1.05; margin-top: 14px; }
.contact-grid .intro { color: var(--block-2); margin-top: 18px; font-size: 17px; }
.brief-list li { position: relative; padding: 12px 0 12px 34px; border-top: 1px solid var(--block-line); line-height: 1.45; }
.brief-list li:last-child { border-bottom: 1px solid var(--block-line); }
.brief-list li::before { content: ""; position: absolute; left: 0; top: 14px; width: 18px; height: 18px; border: 1.5px solid var(--block-2); border-radius: 2px; }
.brief-list h3 { font: 500 12px/1.4 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--block-2); margin-bottom: 12px; }
.channels { display: flex; flex-direction: column; gap: 12px; }
.channel { display: block; padding: 18px 20px; border: 1px solid var(--block-line); border-radius: 4px; text-decoration: none; background: var(--block-surface); transition: border-color .2s; }
.channel:hover { border-color: var(--signal); }
.channel span { display: block; font: 500 11px/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--block-2); }
.channel strong { display: block; margin-top: 6px; font: 600 22px/1.2 var(--f-display); letter-spacing: -.01em; overflow-wrap: anywhere; }
.channel.primary { background: var(--signal); border-color: var(--signal); color: var(--on-signal); }
.channel.primary span { color: var(--on-signal); opacity: .75; }
.channel.primary:hover { border-color: var(--block-fg); }
.copy-row { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--block-2); }
.copy-btn { background: none; border: 1px solid var(--block-line); color: var(--block-fg); border-radius: 3px; padding: 6px 10px; cursor: pointer; font: 500 12px/1 var(--f-mono); }
.copy-btn:hover { border-color: var(--block-fg); }
@media (max-width: 1020px) { .contact-grid { grid-template-columns: 1fr 1fr; } .contact-grid > :first-child { grid-column: 1 / -1; } }
@media (max-width: 640px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- Подвал-штамп ---------- */
.site-footer { background: var(--block); color: var(--block-fg); padding-block: 0 32px; }
.footer-stamp { display: grid; grid-template-columns: 1.2fr 1.6fr 1fr .8fr; border: 1px solid var(--block-line); }
.footer-stamp > div { padding: 12px 16px; border-right: 1px solid var(--block-line); min-width: 0; }
.footer-stamp > div:last-child { border-right: 0; }
.footer-stamp span { display: block; font: 500 10px/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--block-2); }
.footer-stamp strong, .footer-stamp a { display: block; margin-top: 3px; font: 600 14px/1.35 var(--f-body); text-decoration: none; color: var(--block-fg); overflow-wrap: anywhere; }
.footer-stamp a:hover { color: var(--signal); }
@media (max-width: 760px) {
  .footer-stamp { grid-template-columns: 1fr 1fr; }
  .footer-stamp > div:nth-child(2) { border-right: 0; }
  .footer-stamp > div:nth-child(-n+2) { border-bottom: 1px solid var(--block-line); }
}

/* ---------- Диалог кейса ---------- */
.case-dialog {
  width: min(760px, calc(100% - 32px)); max-height: min(88vh, 900px);
  padding: 0; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); color: var(--ink); box-shadow: var(--shadow);
}
.case-dialog::backdrop { background: var(--backdrop); }
.dialog-head { position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 16px clamp(20px, 3vw, 32px); background: var(--paper); border-bottom: 1px solid var(--line); z-index: 1; }
.dialog-close { width: 40px; height: 40px; border-radius: 4px; border: 1px solid var(--line-strong); background: transparent; cursor: pointer; font: 400 24px/1 var(--f-body); flex: none; }
.dialog-close:hover { border-color: var(--ink); }
.dialog-body { padding: clamp(20px, 3vw, 32px); }
.dialog-body h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.1; margin: 12px 0 14px; }
.dialog-body .context { color: var(--ink-2); font-size: 17px; }
.dialog-body h3 { font: 500 12px/1.4 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin: 26px 0 12px; }
.dialog-body .result { font-size: 17px; }
.dialog-plant { margin-top: 26px; background: var(--surface); border-left: 3px solid var(--signal); padding: 16px 18px; border-radius: 0 4px 4px 0; }
.dialog-plant h3 { margin: 0 0 8px; color: var(--signal-ink); }
.dialog-body .chips { margin-top: 24px; }
body.dialog-open { overflow: hidden; }