/* ===================================================================
   RD[AI] /data — Промышленные архивы
   Brand book: Inter, #2563EB, line-icons, без теней, без emoji.
   =================================================================== */

:root {
  --c-bg: #f8faff;
  --c-bg-white: #ffffff;
  --c-bg-off: #eff6ff;
  --c-bg-soft: #dbeafe;
  --c-text: #111827;
  --c-muted: #374151;
  --c-gray: #6b7280;
  --c-border: #e5e7eb;
  --c-border-strong: #d1d5db;
  --c-accent: #2563eb;
  --c-accent-hover: #1d4ed8;
  --c-accent-bg: #eff6ff;
  --c-accent-pale: #dbeafe;
  --c-success: #16a34a;
  --c-success-pale: #f0fdf4;
  --c-warn: #d97706;
  --c-warn-pale: #fffbeb;
  --c-danger: #dc2626;
  --c-danger-pale: #fef2f2;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 14px;
  --radius-pill: 20px;

  --shadow: none;

  --container: 1160px;
  --pad: clamp(16px, 4vw, 32px);

  --fs-h1: clamp(32px, 4.4vw, 52px);
  --fs-h2: clamp(24px, 2.8vw, 34px);
  --fs-h3: 20px;
  --fs-body: 17px;
  --fs-small: 14px;

  --lh-tight: 1.18;
  --lh: 1.55;

  --tr-base: 180ms ease;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px; /* sticky header + sub-nav */
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  font-size: var(--fs-body);
  line-height: var(--lh);
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--c-accent); text-decoration: none; transition: color var(--tr-base); }
a:hover { color: var(--c-accent-hover); }

h1, h2, h3, h4 { margin: 0; line-height: var(--lh-tight); font-weight: 700; color: var(--c-text); }
h1 { font-size: var(--fs-h1); letter-spacing: -0.01em; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.005em; }
h3 { font-size: var(--fs-h3); }

p { margin: 0; }

/* ---------- layout ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.section {
  padding: clamp(56px, 8vw, 96px) 0;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg-white);
  position: relative;
}
.section:first-of-type { border-top: 0; }
.section--alt { background: var(--c-bg-off); }

/* ---------- progress bar (top of page) ---------- */
#rdai-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--c-accent);
  z-index: 300;
  width: 0%;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ---------- decorative blobs ---------- */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}
@media (max-width: 640px) {
  .blob { filter: blur(40px); opacity: 0.25; }
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 16px;
}

.section h2 + .lede,
.section h2 + p {
  margin-top: 16px;
  color: var(--c-muted);
  max-width: 760px;
  font-size: 19px;
}

/* ---------- header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--c-border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--c-text);
  letter-spacing: -0.01em;
}
.brand .b { color: var(--c-accent); }
.nav { display: flex; gap: 22px; align-items: center; }
.nav a {
  color: var(--c-text);
  font-size: 15px;
  font-weight: 500;
}
.nav a:hover { color: var(--c-accent); }
.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--c-accent);
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  transition: background var(--tr-base);
}
.header__cta:hover { background: var(--c-accent-hover); color: #fff; }
@media (max-width: 880px) {
  .nav { display: none; }
}

/* sub-nav (sticky якоря по странице) */
.subnav {
  position: sticky;
  top: 72px;
  z-index: 40;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.subnav__inner {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 10px 0;
  white-space: nowrap;
}
.subnav a {
  color: var(--c-muted);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 500;
  transition: background var(--tr-base), color var(--tr-base);
}
.subnav a:hover { background: var(--c-bg-soft); color: var(--c-text); }

/* ---------- hero ---------- */
.hero { padding-top: clamp(48px, 7vw, 80px); padding-bottom: clamp(56px, 8vw, 96px); }
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
}
@media (max-width: 920px) { .hero__grid { grid-template-columns: 1fr; } }

.hero__text p.lede { color: var(--c-muted); font-size: 20px; margin-top: 20px; max-width: 540px; }
.hero__ctas { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero__schema svg { width: 100%; height: auto; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--tr-base), border-color var(--tr-base), color var(--tr-base);
}
.btn--primary {
  background: var(--c-accent);
  color: #fff;
}
.btn--primary:hover { background: var(--c-accent-hover); color: #fff; }
.btn--ghost {
  background: #fff;
  border-color: var(--c-border-strong);
  color: var(--c-text);
}
.btn--ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.btn--lg { padding: 16px 26px; font-size: 16px; }
.btn--full { width: 100%; justify-content: center; }

/* ---------- generic cards ---------- */
.card {
  background: var(--c-bg-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover { box-shadow: 0 4px 20px rgba(37,99,235,0.06); transform: translateY(-2px); }
.card--accent { border-color: var(--c-accent); }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--c-muted); }

.cards-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.cards-4 > .card:nth-child(5) { grid-column: 1 / -1; }
@media (max-width: 720px) { .cards-4 { grid-template-columns: 1fr; } .cards-4 > .card:nth-child(5) { grid-column: auto; } }

/* ---------- deliverables (нумерованный список) ---------- */
.deliverables { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 12px; }
.deliverables li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.deliverables__num {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--c-accent-bg); color: var(--c-accent);
  font-weight: 700; font-size: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.deliverables strong { display: block; margin-bottom: 4px; font-size: 17px; }
.deliverables span { color: var(--c-muted); font-size: 15px; }

/* ---------- executive summary ---------- */
.exec-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; }
.exec-list li {
  position: relative;
  padding: 18px 20px 18px 44px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.55;
  color: var(--c-muted);
}
.exec-list li::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 26px;
  width: 8px;
  height: 8px;
  background: var(--c-accent);
  border-radius: 50%;
}
.exec-list strong { color: var(--c-text); }

/* ---------- output table example ---------- */
.outtable-wrap {
  margin: 28px 0 0;
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.outtable {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 720px;
}
.outtable th, .outtable td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
  vertical-align: top;
}
.outtable thead th {
  background: var(--c-accent-bg);
  color: var(--c-accent);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--c-accent);
}
.outtable tbody tr:last-child td { border-bottom: none; }
.outtable code {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  background: #F3F4F6;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--c-text);
}
.outtable .alt-names { color: var(--c-muted); }
.outtable .conflict {
  display: inline-block;
  padding: 2px 8px;
  background: #FEF3C7;
  color: #92400E;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 6px;
}
.outtable-note { margin: 12px 0 0; font-size: 13px; color: var(--c-muted); }
.src { display:inline-block; padding:2px 8px; border-radius:4px; font-size:11px; font-weight:600; letter-spacing:.02em; white-space:nowrap; font-family:'JetBrains Mono','Courier New',monospace; }
.src--archive { background:var(--c-accent-pale); color:var(--c-accent); }
.src--external { background:var(--c-warn-pale); color:var(--c-warn); }
.src--external-high { background:var(--c-success-pale); color:var(--c-success); }
.gap-cards { display:grid; grid-template-columns:repeat(3, 1fr); gap:20px; margin:24px 0; }
.gap-card { background:var(--c-bg-white); border:1px solid var(--c-border); border-radius:var(--radius); padding:20px; transition: box-shadow 0.2s ease, transform 0.2s ease; }
.gap-card:hover { box-shadow: 0 4px 20px rgba(37,99,235,0.08); transform: translateY(-2px); }
.gap-card__h { font-size:14px; color:var(--c-muted); margin:0 0 6px; font-weight:600; text-transform:uppercase; letter-spacing:.04em; }
.gap-card__obj { font-size:18px; color:var(--c-text); font-weight:700; margin:0 0 12px; line-height:1.3; }
.gap-card__flow { font-size:13px; color:#374151; line-height:1.6; margin:0 0 14px; }
.gap-card__flow strong { color:var(--c-text); }
.gap-card__src { display:inline-block; padding:4px 10px; border-radius:var(--radius-sm); font-size:11px; font-weight:600; background:var(--c-warn-pale); color:var(--c-warn); font-family:'JetBrains Mono',monospace; }
.gap-card__src--high { background:var(--c-success-pale); color:var(--c-success); }
.gap-levels { display:grid; grid-template-columns:repeat(4, 1fr); gap:14px; margin:32px 0 0; }
.gap-level { background:var(--c-bg-white); border:1px solid var(--c-border); border-left:3px solid var(--c-accent); padding:16px; border-radius:var(--radius); }
.gap-level--ours { background:var(--c-accent-pale); border-left-color:#1d4ed8; }
.gap-level__num { font-family:'JetBrains Mono',monospace; font-size:11px; color:#2563EB; font-weight:700; letter-spacing:.05em; }
.gap-level__title { font-size:15px; color:#111827; font-weight:700; margin:6px 0 8px; }
.gap-level__txt { font-size:13px; color:#374151; line-height:1.5; margin:0; }
.gap-level__competitors { font-size:11px; color:#6B7280; margin-top:10px; padding-top:10px; border-top:1px solid #E0E7FF; }
.gap-level__competitors strong { color:#111827; }
@media (max-width:880px){ .gap-cards{grid-template-columns:1fr;} .gap-levels{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .gap-levels{grid-template-columns:1fr;} }

/* ---------- traceability block ---------- */
.trace {
  margin: 24px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.trace__item {
  padding: 20px;
  background: var(--c-bg-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.trace__h {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
  margin: 0 0 8px;
}
.trace__txt { font-size: 14px; color: var(--c-muted); line-height: 1.55; margin: 0; }
@media (max-width: 720px) { .trace { grid-template-columns: 1fr; } }

/* ---------- acceptance checklist ---------- */
.accept {
  margin: 28px 0 0;
  background: var(--c-success-pale);
  border: 1px solid var(--c-success);
  border-radius: var(--radius);
  padding: 24px 28px;
}
.accept h3 { margin: 0 0 16px; font-size: 18px; color: var(--c-text); }
.accept ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.accept li {
  position: relative;
  padding-left: 28px;
  font-size: 15px;
  line-height: 1.55;
  color: #374151;
}
.accept li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  background: var(--c-success);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M3 8l4 4 6-8'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M3 8l4 4 6-8'/></svg>") center/contain no-repeat;
}
.accept__sign {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--c-border);
  font-size: 14px;
  color: var(--c-muted);
}

/* ---------- principles (горизонтальные строки) ---------- */
.principles { display: grid; gap: 20px; margin-top: 32px; }
.principles__row { display: grid; grid-template-columns: 28px 1fr; gap: 18px; align-items: start; }
.principles__row .icon { color: var(--c-accent); margin-top: 4px; }
.principles__row strong { display: block; margin-bottom: 4px; font-size: 18px; }
.principles__row p { color: var(--c-muted); }

/* ---------- schema wrapper ---------- */
.schema {
  margin: 32px 0 0;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}
.schema svg { width: 100%; min-width: 800px; height: auto; }
.schema--bare { padding: 0; border: none; background: transparent; }
.schema__caption { margin-top: 12px; color: var(--c-gray); font-size: 14px; }

/* ---------- process accordion ---------- */
.process-steps { margin-top: 32px; display: grid; gap: 12px; }
.process-step {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.process-step summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 40px 1fr 20px;
  gap: 16px;
  align-items: center;
  font-weight: 600;
  font-size: 17px;
}
.process-step summary::-webkit-details-marker { display: none; }
.process-step__num {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--c-accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.process-step__chev {
  transition: transform var(--tr-base);
  color: var(--c-gray);
}
.process-step[open] .process-step__chev { transform: rotate(180deg); }
.process-step__body { margin-top: 14px; color: var(--c-muted); padding-left: 56px; }

/* ---------- funnel (ladder) ---------- */
.ladder { margin-top: 24px; display: grid; gap: 12px; }
.ladder__row {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.ladder__row--accent { border-color: var(--c-accent); }
.ladder__num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--c-accent-bg); color: var(--c-accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.ladder__title { font-weight: 600; }
.ladder__meta { color: var(--c-gray); font-size: 14px; margin-top: 2px; }
@media (max-width: 640px) {
  .ladder__row { grid-template-columns: 28px 1fr; }
  .ladder__row .btn, .ladder__row a:last-child { grid-column: 1 / -1; margin-top: 8px; }
}

/* ---------- ROI calculator ---------- */
.roi {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 40px);
  margin-top: 32px;
  align-items: start;
}
@media (max-width: 880px) { .roi { grid-template-columns: 1fr; } }
.roi__inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 480px) { .roi__inputs { grid-template-columns: 1fr; } }
.roi__field label {
  display: block;
  font-weight: 500;
  font-size: 14px;
  color: var(--c-muted);
  margin-bottom: 8px;
}
.roi__field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 16px;
  background: #fff;
  color: var(--c-text);
  transition: border-color var(--tr-base);
  -moz-appearance: textfield;
}
.roi__field input::-webkit-outer-spin-button,
.roi__field input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.roi__field input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}
.roi__field .hint { display: block; font-size: 12px; color: var(--c-gray); margin-top: 6px; }

.roi__result {
  background: var(--c-accent);
  color: #fff;
  padding: 28px 28px;
  border-radius: var(--radius-lg);
}
.roi__result-label { font-size: 14px; opacity: 0.85; }
.roi__result-value {
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 6px;
  font-variant-numeric: tabular-nums lining-nums;
  line-height: 1.05;
}
.roi__result-breakdown {
  margin-top: 14px;
  font-size: 14px;
  opacity: 0.92;
  display: grid; gap: 6px;
}
.roi__result-note {
  margin-top: 18px;
  font-size: 13px;
  opacity: 0.8;
}
.roi__result.is-invalid {
  background: var(--c-bg-soft);
  color: var(--c-gray);
}
.roi__result.is-invalid .roi__result-value { font-size: 20px; }
.roi__cta { margin-top: 24px; }

/* ---------- cases ---------- */
.cases { display: grid; gap: 20px; margin-top: 32px; }
.case {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 720px) { .case { grid-template-columns: 1fr; } }
.case__industry { color: var(--c-gray); font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.case__title { margin-top: 6px; font-size: 22px; font-weight: 700; }
.case__metric {
  margin-top: 18px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums lining-nums;
}
.case__body { color: var(--c-muted); }
.cases__note { margin-top: 16px; color: var(--c-gray); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { margin-top: 32px; display: grid; gap: 10px; }
.faq__item {
  background: var(--c-bg-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: box-shadow 0.2s ease;
}
.faq__item:hover { box-shadow: 0 2px 12px rgba(37,99,235,0.05); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 17px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__chev { color: var(--c-gray); transition: transform var(--tr-base); flex: none; }
.faq__item[open] .faq__chev { transform: rotate(180deg); }
.faq__body { margin-top: 12px; color: var(--c-muted); }

/* ---------- CTA section ---------- */
.cta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-top: 32px;
  align-items: start;
}
@media (max-width: 880px) { .cta { grid-template-columns: 1fr; } }
.cta__price {
  font-size: 36px;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.01em;
  margin-top: 12px;
}
.cta__bullets { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; }
.cta__bullets li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  color: var(--c-muted);
}
.cta__bullets svg { color: var(--c-accent); margin-top: 4px; }
.cta__note { margin-top: 22px; color: var(--c-gray); font-size: 14px; }

.form {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  gap: 14px;
}
.form__field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-muted);
  margin-bottom: 6px;
}
.form__field input,
.form__field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 16px;
  background: #fff;
  color: var(--c-text);
  transition: border-color var(--tr-base);
}
.form__field textarea { resize: vertical; min-height: 88px; }
.form__field input:focus,
.form__field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}
.form__consent {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.5;
}
.form__consent input { margin-top: 2px; }
/* honeypot — invisible to humans */
.form__hp { position: absolute !important; left: -10000px !important; top: auto; width: 1px; height: 1px; overflow: hidden; }

.form__status { font-size: 14px; min-height: 20px; }
.form__status.is-error { color: #b91c1c; }
.form__status.is-ok { color: #166534; }

/* ---------- footer ---------- */
.footer {
  background: var(--c-bg-off);
  padding: 48px 0 32px;
  border-top: 1px solid var(--c-border);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 720px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
.footer h4 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--c-gray); margin-bottom: 14px; font-weight: 600; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer a { color: var(--c-muted); font-size: 15px; }
.footer a:hover { color: var(--c-accent); }
.footer__copy { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--c-border); font-size: 13px; color: var(--c-gray); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- utility ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}



  /* Scroll reveal — более выразительный, но B2B-стиль */
  [data-reveal]{
    opacity:0;
    transform:translateY(48px) scale(.98);
    transition:opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1);
    will-change:opacity,transform
  }
  [data-reveal].is-visible{opacity:1;transform:translateY(0) scale(1)}
  @media (max-width:640px){
    [data-reveal]{transform:translateY(28px) scale(.985);transition-duration:.4s}
  }
  @media (prefers-reduced-motion: reduce){
    [data-reveal]{opacity:1!important;transform:none!important;transition:none!important}
  }


      .bg { fill: #FFFFFF; }
      .panel { fill: #F9FAFB; stroke: #D1D5DB; stroke-width: 1.5; }
      .panel-line { fill: none; stroke: #D1D5DB; stroke-width: 1.5; }
      .h-label { font-family: 'Inter', 'Arial', sans-serif; font-size: 14px; font-weight: 600; fill: #6B7280; letter-spacing: 0.08em; text-transform: uppercase; }
      .t-title { font-family: 'Inter', 'Arial', sans-serif; font-size: 22px; font-weight: 700; fill: #111827; }
      .t-body { font-family: 'Inter', 'Arial', sans-serif; font-size: 15px; font-weight: 500; fill: #111827; }
      .t-mute { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 400; fill: #6B7280; }
      .t-mono { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 500; fill: #111827; }
      .doc { fill: #FFFFFF; stroke: #D1D5DB; stroke-width: 1.5; }
      .doc-line { stroke: #D1D5DB; stroke-width: 1.5; fill: none; }
      .accent { stroke: #2563EB; }
      .accent-fill { fill: #2563EB; }
      .row { stroke: #D1D5DB; stroke-width: 1.5; fill: none; }
      .row-bg { fill: #FFFFFF; stroke: #D1D5DB; stroke-width: 1.5; }
      .pill { fill: #FFFFFF; stroke: #2563EB; stroke-width: 1.5; }
      .pill-text { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 600; fill: #2563EB; }
    

      .bg { fill: #FFFFFF; }
      .h-label { font-family: 'Inter', 'Arial', sans-serif; font-size: 14px; font-weight: 600; fill: #6B7280; letter-spacing: 0.08em; text-transform: uppercase; }
      .t-title { font-family: 'Inter', 'Arial', sans-serif; font-size: 22px; font-weight: 700; fill: #111827; }
      .name-tag { fill: #FFFFFF; stroke: #D1D5DB; stroke-width: 1.5; }
      .name-text { font-family: 'Inter', 'Arial', sans-serif; font-size: 16px; font-weight: 600; fill: #111827; }
      .name-source { font-family: 'Inter', 'Arial', sans-serif; font-size: 12px; font-weight: 400; fill: #6B7280; }
      .arrow { fill: none; stroke: #6B7280; stroke-width: 1.5; stroke-linecap: round; }
      .arrow-accent { fill: none; stroke: #2563EB; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
      .master-card { fill: #FFFFFF; stroke: #2563EB; stroke-width: 2; }
      .master-id { font-family: 'Inter', 'Arial', sans-serif; font-size: 28px; font-weight: 700; fill: #2563EB; }
      .master-obj { font-family: 'Inter', 'Arial', sans-serif; font-size: 18px; font-weight: 700; fill: #111827; }
      .master-mute { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 400; fill: #6B7280; }
      .caption { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 400; fill: #6B7280; }
    

      .bg { fill: #FFFFFF; }
      .card { fill: #FFFFFF; stroke: #D1D5DB; stroke-width: 1.5; }
      .step-num { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 600; fill: #2563EB; letter-spacing: 0.06em; }
      .step-title { font-family: 'Inter', 'Arial', sans-serif; font-size: 16px; font-weight: 700; fill: #111827; }
      .step-body { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 400; fill: #6B7280; }
      .divider-text { font-family: 'Inter', 'Arial', sans-serif; font-size: 12px; font-weight: 500; fill: #6B7280; letter-spacing: 0.04em; }
      .icon-stroke { fill: none; stroke: #111827; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
      .icon-accent { fill: none; stroke: #2563EB; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
      .arrow { fill: none; stroke: #2563EB; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
      .phase-label { font-family: 'Inter', 'Arial', sans-serif; font-size: 12px; font-weight: 600; fill: #6B7280; letter-spacing: 0.1em; text-transform: uppercase; }
    

      .bg { fill: #FFFFFF; }
      .step { fill: #FFFFFF; stroke: #D1D5DB; stroke-width: 1.5; }
      .step-accent { fill: #FFFFFF; stroke: #2563EB; stroke-width: 2; }
      .step-num { font-family: 'Inter', 'Arial', sans-serif; font-size: 12px; font-weight: 600; fill: #6B7280; letter-spacing: 0.08em; }
      .step-num-accent { font-family: 'Inter', 'Arial', sans-serif; font-size: 12px; font-weight: 600; fill: #2563EB; letter-spacing: 0.08em; }
      .step-title { font-family: 'Inter', 'Arial', sans-serif; font-size: 17px; font-weight: 700; fill: #111827; }
      .step-body { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 400; fill: #6B7280; }
      .step-price { font-family: 'Inter', 'Arial', sans-serif; font-size: 14px; font-weight: 700; fill: #111827; }
      .step-price-free { fill: #2563EB; }
      .arrow { fill: none; stroke: #2563EB; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
      .top-label { font-family: 'Inter', 'Arial', sans-serif; font-size: 12px; font-weight: 600; fill: #6B7280; letter-spacing: 0.1em; text-transform: uppercase; }
      .badge { fill: #F9FAFB; stroke: #D1D5DB; stroke-width: 1; }
      .badge-text { font-family: 'Inter', 'Arial', sans-serif; font-size: 11px; font-weight: 600; fill: #6B7280; }
      .caption { font-family: 'Inter', 'Arial', sans-serif; font-size: 13px; font-weight: 400; fill: #6B7280; }
    

  #rdai-dl-overlay{position:fixed;inset:0;background:rgba(17,24,39,.55);backdrop-filter:blur(2px);z-index:9999;display:none;align-items:center;justify-content:center;padding:20px;font-family:'Inter',system-ui,-apple-system,sans-serif}
  #rdai-dl-overlay.is-open{display:flex}
  #rdai-dl-modal{background:#fff;border-radius:14px;max-width:480px;width:100%;padding:28px;box-shadow:0 24px 72px rgba(17,24,39,.25);max-height:90vh;overflow:auto}
  #rdai-dl-modal h3{margin:0 0 6px;font-size:22px;color:#111827;font-weight:700;line-height:1.25}
  #rdai-dl-modal .rdai-dl-sub{margin:0 0 18px;color:#6B7280;font-size:14px;line-height:1.45}
  #rdai-dl-modal label{display:block;margin:0 0 12px;font-size:13px;color:#374151;font-weight:500}
  #rdai-dl-modal input,#rdai-dl-modal select,#rdai-dl-modal textarea{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid #E5E7EB;border-radius:8px;font:inherit;font-size:14px;color:#111827;background:#fff;box-sizing:border-box}
  #rdai-dl-modal input:focus,#rdai-dl-modal select:focus,#rdai-dl-modal textarea:focus{outline:none;border-color:#2563EB;box-shadow:0 0 0 3px rgba(37,99,235,.15)}
  #rdai-dl-modal .rdai-dl-row{display:flex;gap:10px;margin-top:18px}
  #rdai-dl-modal .rdai-dl-btn{flex:1;padding:11px 16px;border-radius:8px;border:none;font:inherit;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s}
  #rdai-dl-modal .rdai-dl-btn--primary{background:#2563EB;color:#fff}
  #rdai-dl-modal .rdai-dl-btn--primary:hover{background:#1d4ed8}
  #rdai-dl-modal .rdai-dl-btn--primary:disabled{opacity:.6;cursor:wait}
  #rdai-dl-modal .rdai-dl-btn--ghost{background:#F3F4F6;color:#374151}
  #rdai-dl-modal .rdai-dl-btn--ghost:hover{background:#E5E7EB}
  #rdai-dl-modal .rdai-dl-status{margin-top:14px;font-size:13px;color:#6B7280;min-height:18px}
  #rdai-dl-modal .rdai-dl-status.is-error{color:#B91C1C}
  #rdai-dl-modal .rdai-dl-status.is-ok{color:#059669}
  #rdai-dl-modal .rdai-dl-consent{display:flex;align-items:flex-start;gap:8px;margin-top:14px;font-size:12px;color:#6B7280;line-height:1.4}
  #rdai-dl-modal .rdai-dl-consent input{width:auto;margin:2px 0 0}
  #rdai-dl-modal .rdai-dl-consent a{color:#2563EB;text-decoration:underline}
  #rdai-dl-modal .rdai-dl-hp{position:absolute;left:-9999px;opacity:0;pointer-events:none;height:0;width:0}