/* ============================================================
   Data Desk — B2B data-infrastructure landing
   cool paper + graphite + cobalt, data grid, mono details
   ============================================================ */

:root {
  --paper: #f2f4f8;
  --paper-2: #e7ebf1;
  --white: #ffffff;
  --ink: #10141c;
  --graphite: #1b2330;
  --steel: #576374;
  --steel-soft: #8994a3;
  --line: #d5dbe4;
  --line-dark: rgba(255, 255, 255, 0.14);
  --accent: #1554d4;
  --accent-dark: #0e3fa8;
  --accent-bright: #7da2ff;
  --accent-deep: rgba(21, 84, 212, 0.55);
  --accent-soft: rgba(21, 84, 212, 0.1);
  --dark: #0b0f16;
  --dark-2: #111826;
  --dark-3: #182132;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --container: 1200px;
  --header-h: 78px;
  --section-space: clamp(52px, 5.6vw, 80px);
  --section-content-gap: clamp(34px, 3.4vw, 48px);
  --radius: 4px;
  --shadow-1: 0 14px 40px rgba(16, 20, 28, 0.1);
  --shadow-2: 0 24px 60px rgba(16, 20, 28, 0.18);
  --transition: 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  background:
    linear-gradient(rgba(27, 35, 48, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 35, 48, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 36px 36px;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, p, ul, ol, figure {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

::selection {
  background: var(--accent);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.mono {
  font-family: var(--font-mono);
}

.section {
  padding: var(--section-space) 0;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
}

.kicker--light {
  color: var(--accent-bright);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  font-size: clamp(1.7rem, 1.1rem + 2.6vw, 2.75rem);
  line-height: 1.12;
  color: var(--graphite);
  margin-top: 14px;
  max-width: 22ch;
}

.section__title--light {
  color: #fff;
}

.section__text {
  color: var(--steel);
  max-width: 56ch;
  margin-top: 16px;
  overflow-wrap: break-word;
}

.section__text--light {
  color: #a9b5c6;
}

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: var(--section-content-gap);
}

.section__text--aside {
  margin-top: 0;
  max-width: 34ch;
  font-size: 0.95rem;
  padding-bottom: 6px;
  border-left: 2px solid var(--accent);
  padding-left: 18px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn--accent {
  background: var(--accent);
  color: #fff;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  border-radius: 0;
}

.btn--accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.btn--accent:active {
  transform: translateY(0);
}

.btn--ghost {
  border-color: var(--graphite);
  color: var(--graphite);
  background: transparent;
}

.btn--ghost:hover {
  background: var(--graphite);
  color: #fff;
  transform: translateY(-2px);
}

.btn--sm {
  padding: 11px 22px;
  font-size: 0.85rem;
}

.btn--lg {
  padding: 18px 40px;
  font-size: 1.02rem;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(242, 244, 248, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 30px rgba(16, 20, 28, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--graphite);
  min-width: 0;
}

.brand__mark {
  width: 38px;
  height: 38px;
  color: var(--graphite);
  flex-shrink: 0;
}

.brand__flow {
  stroke: var(--accent);
}

.brand__cell {
  fill: var(--accent);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 1.16rem;
}

.brand__sub {
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav__list {
  display: flex;
  gap: 26px;
}

.main-nav__link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--graphite);
  padding: 6px 0;
  transition: color var(--transition);
}

.main-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.main-nav__link:hover,
.main-nav__link.is-active {
  color: var(--accent);
}

.main-nav__link:hover::after,
.main-nav__link.is-active::after {
  transform: scaleX(1);
}

.header__cta {
  padding: 12px 22px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--graphite);
  transition: transform var(--transition), opacity var(--transition);
}

.burger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger.is-open span:nth-child(2) {
  opacity: 0;
}

.burger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  background: transparent;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  gap: clamp(32px, 3.2vw, 46px);
  align-items: center;
  /* The sticky header remains in flow; base the visual clearance on its height. */
  padding-top: clamp(18px, calc(var(--header-h) * 0.27), 22px);
  padding-bottom: clamp(4px, 0.5vw, 7px);
}

.hero__content,
.hero__visual {
  min-width: 0;
}

.hero__title {
  font-family: "Inter", system-ui, sans-serif;
  font-weight: 700;
  font-size: clamp(42px, 3.55vw, 52px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--graphite);
  margin-top: 16px;
}

@media (max-width: 760px) {
  .hero__title {
    font-size: clamp(30px, 9.2vw, 52px);
  }
}

.hero__lead {
  margin-top: 18px;
  max-width: 52ch;
  font-size: 1.06rem;
  color: var(--steel);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--graphite);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color var(--transition), transform var(--transition);
}

.chip:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.chip__dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* ---------- Hero data-flow panel ---------- */

.dataflow {
  position: relative;
  background: var(--dark);
  border: 1px solid var(--graphite);
  border-radius: var(--radius);
  padding: clamp(16px, 2.4vw, 24px);
  padding-bottom: calc(clamp(16px, 2.4vw, 24px) + 12px);
  box-shadow: var(--shadow-2);
  color: #dfe6ee;
}

.dataflow::before,
.dataflow::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 2px solid var(--accent);
}

.dataflow::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.dataflow::after {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.dataflow__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-dark);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7f8da0;
}

.dataflow__status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent-bright);
}

.dataflow__status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-bright);
}

.dataflow__diagram {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24px minmax(0, 1fr) 24px minmax(0, 1fr);
  align-items: center;
  gap: 6px;
  margin-top: 20px;
}

.dataflow__stage {
  min-width: 0;
}

.dataflow__stage-label {
  margin-bottom: 10px;
  font-size: 10px;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
  color: #8292a7;
}

.dataflow__sources {
  display: grid;
  gap: 7px;
}

.src {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  transition: border-color var(--transition), background var(--transition);
}

.src:hover {
  border-color: var(--accent-bright);
  background: rgba(125, 162, 255, 0.06);
}

.src__ico {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  color: var(--accent-bright);
}

.src__ico svg {
  width: 100%;
  height: 100%;
}

.src__name {
  min-width: 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: #e7edf4;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.dataflow__connector {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-bright);
}

.dataflow__connector svg {
  width: 24px;
  height: 24px;
}

.dataflow__process {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 10px;
  border: 1px dashed rgba(125, 162, 255, 0.45);
  border-radius: 3px;
  background: var(--dark-2);
}

.pchip {
  position: relative;
  padding: 7px 8px 7px 18px;
  font-size: 10px;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: #c6d2e0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  white-space: nowrap;
}

.pchip--quality {
  font-size: 9px;
  letter-spacing: -0.045em;
}

.pchip::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-bright);
  transform: translateY(-50%);
}

.dataflow__outputs {
  display: grid;
  gap: 8px;
}

.out-card {
  display: grid;
  grid-template-columns: 21px minmax(0, 1fr);
  column-gap: 7px;
  row-gap: 2px;
  align-items: center;
  min-height: 50px;
  padding: 7px;
  background: var(--dark-3);
  border: 1px solid var(--line-dark);
  color: var(--accent-bright);
}

.out-card svg {
  grid-row: span 2;
  width: 20px;
  height: 20px;
}

.out-card span {
  min-width: 0;
  color: #e7edf4;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.out-card small {
  color: #8292a7;
  font-size: 0.62rem;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

/* ---------- Cases ---------- */

.cases {
  background: transparent;
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 22px;
}

.case-card {
  grid-column: span 6;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.case-card--w7 { grid-column: span 7; }
.case-card--w5 { grid-column: span 5; }

.case-card:hover {
  transform: translateY(-5px);
  border-color: var(--graphite);
  box-shadow: var(--shadow-1);
}

.case-card--feature {
  border-top: 3px solid var(--accent);
}

.case-card__viz {
  position: relative;
  background: var(--dark);
  padding: 0;
}

.case-card__image {
  display: block;
  width: 100%;
  height: auto;
}

.case-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: clamp(22px, 2.6vw, 32px);
}

.case-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel-soft);
}

.case-card__top span:first-child {
  color: var(--accent);
  font-weight: 700;
}

.case-card__tag {
  padding: 3px 9px;
  border: 1px solid var(--line);
  color: var(--steel);
}

.case-card__title {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 1rem + 0.5vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.25;
  color: var(--graphite);
}

.case-card__lead {
  margin-top: 10px;
  font-size: 0.94rem;
  color: var(--steel);
}

.case-card__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 18px;
}

.fact {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.4;
  color: var(--graphite);
  background: var(--paper);
  border: 1px solid var(--line);
  white-space: nowrap;
}

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

.case-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 22px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.case-card__link span {
  transition: transform var(--transition);
}

.case-card__link:hover span {
  transform: translateX(5px);
}

/* ---------- Tasks ---------- */

.tasks {
  position: relative;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--dark);
  background-size: 44px 44px;
  color: #fff;
}

.tasks__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.task-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 250px;
  padding: 24px;
  background: linear-gradient(145deg, #172237, #111a29 74%);
  border: 1px solid rgba(125, 162, 255, 0.22);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.task-card:hover {
  border-color: rgba(125, 162, 255, 0.7);
  transform: translateY(-3px);
  background: linear-gradient(145deg, #1a2a43, #111a29 74%);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.22);
}

.task-card__ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  flex: 0 0 58px;
  color: #85a8ff;
  background: rgba(125, 162, 255, 0.13);
  border: 1px solid rgba(125, 162, 255, 0.3);
  border-radius: var(--radius);
}

.task-card:nth-child(2) .task-card__ico { color: #4cd1e0; background: rgba(76, 209, 224, 0.11); border-color: rgba(76, 209, 224, 0.32); }
.task-card:nth-child(3) .task-card__ico { color: #88bdff; background: rgba(136, 189, 255, 0.12); border-color: rgba(136, 189, 255, 0.32); }
.task-card:nth-child(4) .task-card__ico { color: #66ddc2; background: rgba(102, 221, 194, 0.1); border-color: rgba(102, 221, 194, 0.3); }

.task-card__ico svg {
  width: 38px;
  height: 38px;
}

.task-card h3 {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #f5f8fc;
}

.task-card p {
  margin-top: 8px;
  font-size: 0.94rem;
  color: #a9b6c9;
}

.tasks__results {
  margin-top: 34px;
  padding: 24px clamp(20px, 3vw, 36px);
  background: var(--dark-3);
  border: 1px solid rgba(125, 162, 255, 0.2);
  border-radius: var(--radius);
  color: #fff;
}

.tasks__results-label {
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-bright);
}

.tasks__results-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.tasks__results-list li {
  padding: 8px 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: #e7edf4;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.tasks__note {
  margin-top: 16px;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: #8b98aa;
}

/* ---------- Process (light) ---------- */

.process {
  position: relative;
  background:
    linear-gradient(rgba(27, 35, 48, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 35, 48, 0.035) 1px, transparent 1px),
    var(--white);
  background-size: 36px 36px;
  color: var(--ink);
}

.process::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 26px, rgba(21, 84, 212, 0.16) 26px 40px);
}

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 22px;
}

.steps::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 27px;
  right: 27px;
  height: 1px;
  background: repeating-linear-gradient(90deg, rgba(21, 84, 212, 0.38) 0 8px, transparent 8px 16px);
}

.step {
  position: relative;
  min-width: 0;
}

.step__node {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--white);
  border: 1px solid rgba(21, 84, 212, 0.44);
  border-radius: 50%;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.step:hover .step__node {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: scale(1.06);
}

.step__title {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--graphite);
}

.step__text {
  margin-top: 8px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--steel);
  max-width: 30ch;
}

/* ---------- Tools and formats ---------- */

.tools {
  padding: var(--section-space) 0;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.tools__head {
  margin-bottom: var(--section-content-gap);
}

.tools__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.tool-card {
  min-width: 0;
  min-height: 194px;
  padding: 18px 16px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: rgba(21, 84, 212, 0.55);
  box-shadow: var(--shadow-1);
}

.tool-card__mark {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  height: 58px;
  overflow: hidden;
}

.tool-card__mark img {
  display: block;
  width: auto;
  height: 54px;
  max-width: 100%;
  object-fit: contain;
  object-position: left center;
}

.tool-card h3 {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

.tool-card p {
  margin-top: 5px;
  font-size: 0.76rem;
  line-height: 1.45;
  color: var(--steel);
}

/* ---------- Contacts (dark final CTA) ---------- */

.contacts {
  position: relative;
  background:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    var(--dark);
  background-size: 44px 44px;
  color: #fff;
}

.contacts__inner {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.contacts__inner .kicker {
  justify-content: center;
}

.contacts__title {
  margin-left: auto;
  margin-right: auto;
  max-width: 18ch;
}

.contacts__lead {
  margin-left: auto;
  margin-right: auto;
  max-width: 62ch;
}

.contacts__channels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  max-width: 640px;
  margin: 38px auto 0;
}

.contacts__channel {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  text-align: left;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.contacts__channel:hover,
.contacts__channel:focus-visible {
  border-color: var(--accent-bright);
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-2px);
  outline: none;
}

.contacts__channel-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  color: var(--accent-bright);
  background: rgba(125, 162, 255, 0.08);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
}

.contacts__channel-icon svg {
  width: 20px;
  height: 20px;
}

.contacts__channel-body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.contacts__channel-label {
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #8b98aa;
}

.contacts__channel-value {
  font-size: 0.98rem;
  font-weight: 600;
  color: #fff;
  overflow-wrap: anywhere;
}

/* ---------- Contact form ---------- */

.contact-form {
  margin-top: 42px;
  text-align: left;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 34px);
}

.contact-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 18px;
}

.contact-form__grid .field {
  margin-bottom: 0;
}

.field__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #a9b5c6;
}

.field__req {
  color: var(--accent-bright);
}

.field__input {
  width: 100%;
  padding: 13px 15px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: #fff;
  background: var(--dark-3);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field__input::placeholder {
  color: #6b7688;
}

.field__input:focus {
  outline: none;
  border-color: var(--accent-bright);
  box-shadow: 0 0 0 3px rgba(125, 162, 255, 0.18);
}

.field__textarea {
  resize: vertical;
  min-height: 120px;
}

.cf-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form__submit {
  margin-top: 6px;
}

.contact-form__submit .btn {
  min-width: 220px;
}

.contact-form__consent {
  margin: 20px 0 0;
  padding: 12px 14px;
  font-size: 0.76rem;
  line-height: 1.5;
  color: #8b98aa;
  border: 1px dashed rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
}

.contact-form__status {
  margin: 16px 0 0;
  min-height: 1.2em;
  font-size: 0.9rem;
  font-weight: 500;
}

.contact-form__status:empty {
  display: none;
}

.contact-form__status.is-success {
  color: #6ee7a8;
}

.contact-form__status.is-error {
  color: #ff9aa4;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--dark-2);
  color: #93a0ae;
  border-top: 3px solid var(--accent);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  flex-wrap: wrap;
  padding: 34px clamp(20px, 4vw, 40px);
  font-size: 0.85rem;
}

.footer__name {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 1rem;
  line-height: 1;
  color: #fff;
}

.footer__desc {
  margin-top: 9px;
  font-size: 0.8rem;
  color: #8b98aa;
}

.footer__owner {
  margin-top: 3px;
  font-size: 0.75rem;
  line-height: 1.2;
  color: #9ca8b8;
}

.footer__contacts {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__contact {
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
}

.footer__contact-ico {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--accent-bright);
  transition: color var(--transition);
}

.footer__contact-body {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.footer__contact-label {
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #67768b;
}

.footer__contact-value {
  font-size: 0.82rem;
  color: #d6dde8;
  overflow-wrap: anywhere;
  transition: color var(--transition);
}

.footer__contact:hover .footer__contact-value,
.footer__contact:focus-visible .footer__contact-value {
  color: #fff;
}

.footer__contact:hover .footer__contact-ico,
.footer__contact:focus-visible .footer__contact-ico {
  color: #fff;
}

.footer__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer__top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}

.footer__top:hover {
  border-color: var(--accent-bright);
  color: var(--accent-bright);
  transform: translateY(-2px);
}

/* ---------- Reveal animations ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--reveal-delay, 0s);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: clamp(28px, 4vw, 40px);
  }

  .hero__visual {
    max-width: 740px;
  }

  .case-card,
  .case-card--w7,
  .case-card--w5 {
    grid-column: span 6;
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 26px;
  }

  .steps::before {
    display: none;
  }

  .tasks__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tools__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px clamp(20px, 6vw, 32px) 30px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 50px rgba(16, 20, 28, 0.16);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .main-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .main-nav__list {
    flex-direction: column;
    gap: 0;
  }

  .main-nav__link {
    display: block;
    padding: 14px 2px;
    font-family: var(--font-display);
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--line);
  }

  .main-nav__link::after {
    display: none;
  }

  .header__cta {
    margin-top: 20px;
    justify-content: center;
  }

  .burger {
    display: flex;
  }

  .section__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

}

@media (max-width: 640px) {
  .section {
    padding: clamp(46px, 9vw, 58px) 0;
  }

  .hero__inner {
    gap: 28px;
    padding-top: 30px;
    padding-bottom: 4px;
  }

  .hero__lead {
    margin-top: 16px;
    font-size: 1rem;
  }

  .hero__actions {
    margin-top: 22px;
  }

  .hero__chips {
    margin-top: 20px;
  }

  .dataflow {
    padding: 16px;
  }

  .dataflow__bar {
    font-size: 9px;
  }

  .dataflow__process {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 8px;
  }

  .pchip {
    white-space: normal;
    text-align: center;
    padding: 8px 5px;
    font-size: 0.7rem;
  }

  .pchip::before {
    display: none;
  }

  .case-card,
  .case-card--w7,
  .case-card--w5 {
    grid-column: span 12;
  }

  .tasks__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .tools__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .tool-card {
    min-height: 178px;
    padding: 15px;
  }

  .steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .step {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    column-gap: 18px;
    align-items: start;
  }

  .step__node {
    grid-row: span 2;
    width: 48px;
    height: 48px;
  }

  .step__title {
    margin-top: 8px;
  }

  .step__text {
    grid-column: 2;
    max-width: none;
  }

  .dataflow__diagram {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
  }

  .dataflow__stage-label {
    margin-bottom: 8px;
  }

  .dataflow__sources {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dataflow__connector {
    transform: rotate(90deg);
  }

  .dataflow__outputs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .out-card:last-child {
    grid-column: span 2;
  }

  .contacts__channels {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-form__grid {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: 0;
  }

  .contact-form__grid .field {
    margin-bottom: 18px;
  }

  .contact-form__submit .btn {
    width: 100%;
    min-width: 0;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .footer__contacts {
    width: 100%;
    max-width: 320px;
  }
}

@media (max-width: 400px) {
  .dataflow {
    padding: 14px;
  }

  .dataflow__sources,
  .dataflow__outputs {
    gap: 6px;
  }

  .src {
    gap: 6px;
    padding: 7px 6px;
  }

  .src__name {
    font-size: 0.74rem;
  }

  .out-card {
    grid-template-columns: 18px minmax(0, 1fr);
    column-gap: 5px;
    padding: 6px;
  }

  .out-card svg {
    width: 18px;
    height: 18px;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .fact {
    white-space: normal;
  }
}

.task-card[data-reveal] {
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.task-card[data-reveal].is-revealed:hover {
  transform: translateY(-3px);
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .task-card[data-reveal].is-revealed:hover,
  .tool-card:hover {
    transform: none;
  }
}