:root {
  --paper: #f6fbfd;
  --paper-warm: #ffffff;
  --sheet: #ffffff;
  --sheet-blue: #eaf7fc;
  --brand: #00a6df;
  --brand-dark: #0079a8;
  --brand-deep: #004c6b;
  --one-c-red: #d5213d;
  --one-c-red-dark: #9f1830;
  --one-c-yellow: #ffd44d;
  --ink: #202124;
  --graphite: #3c4043;
  --muted: #4f5866;
  --line: #d7e5ec;
  --line-blue: rgba(0, 166, 223, 0.28);
  --shadow: 0 12px 32px rgba(0, 76, 107, 0.08);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --container: 1180px;
  --font: "Segoe UI", Roboto, Arial, sans-serif;
  --font-display: "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #fff 0%, var(--paper) 100%);
  font-family: var(--font);
  line-height: 1.58;
  text-rendering: optimizeLegibility;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background-image: url("background.png");
  background-position: center top;
  background-repeat: no-repeat;
  background-size: cover;
  opacity: 0.16;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(0, 166, 223, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 166, 223, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}

body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration-color: rgba(0, 166, 223, 0.45); text-underline-offset: 0.22em; }
a:hover { color: var(--brand-dark); }
button, input, select, textarea { font: inherit; }

input, select, textarea {
  width: 100%;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  outline: none;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus, a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(0, 121, 168, 0.42);
  outline-offset: 2px;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--brand-dark);
  box-shadow: 0 0 0 4px rgba(0, 166, 223, 0.14);
}
input::placeholder, textarea::placeholder {
  color: #6b7585;
  opacity: 1;
}
select {
  padding-right: 2.5rem;
  cursor: pointer;
}

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--ink); line-height: 1.08; letter-spacing: -0.035em; }
h1 {
  max-width: 980px;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 3.8vw, 3.6rem);
  font-weight: 650;
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  font-weight: 700;
}
h3 { font-size: clamp(1.08rem, 1.8vw, 1.32rem); }
p, li { color: var(--graphite); }
ul, ol { padding-left: 1.2rem; }
address { font-style: normal; }

.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }
.section { padding: clamp(4rem, 8vw, 8rem) 0; }
.section-muted {
  border-block: 1px solid rgba(11, 111, 182, 0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.58), rgba(238,246,251,0.72));
}
.section-heading { max-width: 780px; margin-bottom: clamp(2rem, 4vw, 3.2rem); }
.section-heading p, .copy-block p { font-size: 1.06rem; }
.narrow { max-width: 820px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  transform: translateY(-180%);
  padding: 0.7rem 1rem;
  color: #fff;
  background: var(--brand-deep);
  border-radius: 999px;
  font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-logo { display: block; width: 205px; height: auto; }
.brand-logo-footer { width: 205px; }
.site-nav { display: flex; align-items: center; gap: 1.15rem; }
.site-nav a { color: var(--graphite); font-size: 0.92rem; font-weight: 600; text-decoration: none; }
.site-nav a:hover { color: var(--brand-dark); }
.site-nav .nav-cta {
  padding: 0.72rem 1rem;
  color: #fff;
  background: var(--brand);
  border-radius: 999px;
}
.site-nav .nav-cta:hover { color: #fff; background: var(--brand-dark); }

.nav-toggle {
  display: none;
  width: 2.7rem;
  height: 2.7rem;
  padding: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
}
.nav-toggle-line, .nav-toggle-line::before, .nav-toggle-line::after {
  display: block;
  width: 1.16rem;
  height: 2px;
  margin: auto;
  background: var(--ink);
  border-radius: 999px;
  content: "";
}
.nav-toggle-line::before { transform: translateY(-7px); }
.nav-toggle-line::after { transform: translateY(5px); }

.hero { position: relative; padding-top: clamp(4.5rem, 9vw, 8.5rem); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 0.78fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}
.hero-copy { position: relative; z-index: 1; }
.hero h1 { max-width: 720px; }
.eyebrow {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--brand-deep);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.hero-lead { max-width: 760px; color: var(--graphite); font-size: clamp(1.08rem, 1.8vw, 1.32rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin: 2rem 0; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.82rem 1.22rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}
.button-primary { color: #fff; background: var(--brand); }
.button-primary:hover { color: #fff; background: var(--brand-dark); }
.button-secondary { color: var(--brand-deep); background: #fff; border-color: var(--line-blue); }

.proof-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; max-width: 820px; margin: 0; }
.proof-strip div { padding: 0 0 0 0.85rem; border-left: 3px solid var(--brand); }
.proof-strip dt { color: var(--ink); font-weight: 700; }
.proof-strip dd { margin: 0.2rem 0 0; color: var(--graphite); font-size: 0.92rem; }

.hero-panel {
  position: relative;
  min-height: 0;
  padding: 1.25rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.system-map {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin: 0 0 1rem;
}
.system-node {
  appearance: none;
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 82px;
  padding: 0;
  place-items: center;
  color: var(--brand-deep);
  background: var(--sheet-blue);
  border: 1px solid var(--line-blue);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}
.system-node:hover { border-color: var(--brand); }
.system-node.is-active {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
}
.system-node-erp.is-active {
  color: var(--ink);
  background: var(--one-c-yellow);
  border-color: #e6b800;
}
.system-node:focus-visible {
  outline: 3px solid rgba(0, 166, 223, 0.32);
  outline-offset: 3px;
}
.terminal-card {
  position: relative;
  min-height: 0;
  margin: 0;
  padding: 1rem 1.1rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.terminal-card h2 {
  margin: 0 0 0.38rem;
  color: var(--ink);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0;
}
.terminal-card p { margin-bottom: 0; color: var(--graphite); font-size: 0.95rem; }

.split { display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr); gap: clamp(2rem, 6vw, 5rem); }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.cards-compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card, .case-card, .detail-panel, .price-card, .matrix article {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: none;
}
.card { min-height: 0; padding: 1.35rem; border-left: 3px solid var(--brand); }
.card-icon {
  display: block;
  margin-bottom: 0.85rem;
  color: var(--brand-deep);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.card-visual {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  margin: 0 0 1.1rem;
  background: var(--sheet-blue);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.card-visual::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(0, 76, 107, 0.08));
}
.card-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card h3 { margin-bottom: 0.75rem; }
.card p, .card li { font-size: 0.95rem; }
.card ul { margin-bottom: 0; }

.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.case-card { padding: clamp(1.4rem, 3vw, 2rem); }
.case-meta {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--brand-dark);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0; list-style: none; }
.timeline li { position: relative; padding: 1.35rem; color: inherit; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); }
.timeline span { display: inline-block; margin-bottom: 1rem; color: var(--brand-deep); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.06em; }
.timeline h3 { margin-bottom: 0.6rem; }
.timeline p { margin-bottom: 0; font-size: 0.95rem; }

.tag-grid { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.tag-grid span { display: inline-flex; padding: 0.55rem 0.85rem; color: var(--graphite); background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--brand); border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 600; }
.tag-grid span.tag-1c { border-left-color: var(--one-c-red); }
.note { max-width: 780px; margin: 2rem 0 0; color: var(--graphite); }
.note a { color: var(--brand-deep); font-weight: 600; }

.contact-section { background: var(--sheet-blue); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(340px, 0.82fr); gap: clamp(2rem, 6vw, 5rem); }
.contact-list { display: grid; gap: 0.8rem; margin-top: 2rem; }
.contact-list a, .contact-list span { display: inline-flex; font-weight: 750; }
.contact-list a[href^="tel:"], .contact-list a[href^="mailto:"] {
  color: var(--brand-deep);
  text-decoration: none;
}
.contact-list a[href^="tel:"]:hover, .contact-list a[href^="mailto:"]:hover {
  color: var(--brand-dark);
  text-decoration: underline;
}
.contact-list span { color: var(--ink); }
.contact-map { margin-top: 1.5rem; }
.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.contact-form label { display: grid; gap: 0.4rem; color: var(--ink); font-size: 0.9rem; font-weight: 700; }
.contact-form label:has(select[name="topic"]) { grid-column: 1 / -1; }
.form-wide { grid-column: 1 / -1; }
.form-note {
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 0.9rem;
  line-height: 1.55;
}
.form-note a {
  color: var(--brand-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.14em;
}
.form-note a:hover { color: var(--brand-dark); }

.site-footer { padding: 2.8rem 0; border-top: 1px solid var(--line); background: #fff; }
.site-footer p, .site-footer a { color: var(--graphite); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr) minmax(0, 0.6fr); gap: 2rem; }
.footer-grid p { margin: 1rem 0 0; font-size: 0.94rem; }
.footer-grid nav { display: grid; gap: 0.6rem; }
.footer-grid nav a { text-decoration: none; }
.footer-meta { text-align: right; }
.footer-legal { display: grid; gap: 0.45rem; margin-top: 1rem; }
.footer-legal a { font-size: 0.94rem; text-decoration: underline; text-underline-offset: 0.14em; }

.page-hero { padding-bottom: clamp(3rem, 6vw, 5rem); }
.details-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1rem; }
.detail-panel-map { grid-column: 1 / -1; }
.map-heading { margin: 0 0 0.35rem; font-size: 1.15rem; }
.map-address { margin: 0 0 1rem; color: var(--graphite); font-size: 0.95rem; }
.map-footer {
  margin: 0.85rem 0 0;
  color: var(--graphite);
  font-size: 0.92rem;
  line-height: 1.5;
}
.map-footer a { color: var(--brand-deep); font-weight: 600; }
.yandex-map {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface-muted, #f3f6f8);
}
.yandex-map iframe { display: block; width: 100%; height: min(420px, 56vw); min-height: 280px; border: 0; }
.detail-panel, .price-card, .matrix article { padding: clamp(1.25rem, 3vw, 1.8rem); }
.definition-list { display: grid; gap: 1rem; margin: 0; }
.definition-list div { padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.definition-list div:last-child { padding-bottom: 0; border-bottom: 0; }
.definition-list dt { color: var(--brand-deep); font-size: 0.82rem; font-weight: 850; letter-spacing: 0.08em; text-transform: uppercase; }
.definition-list dd { margin: 0.22rem 0 0; color: var(--graphite); font-weight: 680; }
.matrix { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.matrix ul { margin-bottom: 0; }
.price-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.price-card strong { display: inline-flex; margin-top: 1rem; color: var(--one-c-red-dark); font-size: 1.05rem; }
.details-grid-legal { grid-template-columns: minmax(0, 1fr); }
.details-grid-legal .detail-panel-map { grid-column: auto; }
.section-lead { max-width: 52rem; margin: 0; color: var(--graphite); }
.price-table-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.price-table { width: 100%; min-width: 640px; border-collapse: collapse; }
.price-table th,
.price-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
.price-table th {
  color: var(--brand-deep);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--sheet-blue);
}
.price-table tbody tr:last-child td { border-bottom: 0; }
.price-table td.price-value {
  color: var(--brand-dark);
  font-weight: 800;
  white-space: nowrap;
}
.price-table td:last-child { color: var(--graphite); font-weight: 650; }
.price-disclaimer { margin: 1.25rem 0 0; max-width: 52rem; color: var(--graphite); font-size: 0.94rem; line-height: 1.55; }

@media (max-width: 1200px) {
  .hero-grid, .split, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .cards, .timeline, .price-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-meta { text-align: left; }
}

@media (max-width: 780px) {
  .header-inner { min-height: 68px; }
  .nav-toggle { display: inline-grid; place-items: center; }
  .site-nav {
    position: fixed;
    top: 68px;
    right: 1rem;
    left: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: rgba(255,250,240,0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.8rem; }
  .site-nav .nav-cta { text-align: center; }
  .hero { padding-top: 4rem; }
  .proof-strip, .cards, .cards-compact, .case-grid, .timeline, .details-grid, .matrix, .price-grid { grid-template-columns: 1fr; }
  .hero-panel { border-radius: 1.4rem; }
  .system-map { gap: 0.55rem; margin: 0 0 0.85rem; }
  .system-node { min-height: 68px; font-size: 0.9rem; }
  .terminal-card { margin: 0 0.4rem 0.4rem; }
  .contact-form { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 1.2rem, var(--container)); }
  h1 { font-size: clamp(2.2rem, 13vw, 3.4rem); }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .system-map {
    grid-template-columns: repeat(2, 1fr);
  }
  .terminal-card p { font-size: 0.92rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  body { color: #111827; background: #fff; }
  body::after, body::before, .site-header, .site-footer, .hero-panel, .contact-form { display: none; }
  p, li, h1, h2, h3 { color: #111827; }
  .section { padding: 1.5rem 0; }
  .card, .case-card, .detail-panel, .price-card, .matrix article { border: 1px solid #d1d5db; box-shadow: none; }
}