*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #020403;
  --surface: #04100A;
  --text: #D1FAE5;
  --muted: #6EE7B7;
  --primary: #22C55E;
  --secondary: #16A34A;
  --accent: #A7F3D0;
  --border: rgba(209,250,229,0.14);
  --font: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --max-w: 1200px;
  --industrial-gap: 20px;
  --engineering-line: rgba(209,250,229,0.08);
  --machinery-glow: rgba(34,197,94,0.18);
  --tech-rail: rgba(110,231,183,0.12);
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  background-image:
    linear-gradient(165deg, rgba(2,4,3,0.96) 0%, rgba(4,16,10,0.92) 45%, rgba(2,4,3,1) 100%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 47px,
      var(--engineering-line) 47px,
      var(--engineering-line) 48px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 47px,
      var(--engineering-line) 47px,
      var(--engineering-line) 48px
    );
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  animation: industrial-shift 28s linear infinite;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse at 12% 8%, var(--machinery-glow), transparent 42%),
    radial-gradient(ellipse at 88% 72%, rgba(22,163,74,0.12), transparent 48%);
  opacity: 0.9;
}

main {
  flex: 1 0 auto;
  position: relative;
  z-index: 1;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: var(--accent);
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.tech-mono {
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--muted);
}

.industrial-grid {
  display: grid;
  gap: var(--industrial-gap);
}

.engineering-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  position: relative;
}

.engineering-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent 70%);
}

.machinery-divider {
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 24px 0;
  border: none;
}

.disclosure-banner {
  width: 100%;
  background: var(--accent);
  color: var(--bg);
  font-size: 12px;
  padding: 8px 16px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.disclosure-banner span {
  flex-shrink: 0;
  font-size: 14px;
  line-height: 1;
}

.disclosure-banner p {
  margin: 0;
  text-align: center;
  max-width: 920px;
  line-height: 1.45;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.navbar {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 16px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.brand-lockup:hover {
  color: var(--accent);
}

.brand-lockup img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.nav-desktop {
  display: none;
  list-style: none;
  align-items: center;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.nav-desktop a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  opacity: 0.6;
  color: var(--text);
  position: relative;
}

.nav-desktop a:hover {
  opacity: 1;
  color: var(--primary);
}

.nav-desktop a svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.nav-desktop a[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  z-index: 20;
}

.nav-desktop a:hover::after {
  opacity: 1;
}

.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 10px;
}

.burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2,4,3,0.72);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 1100;
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 88vw);
  height: 100%;
  background: var(--surface);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 1200;
  padding: 72px 24px 24px;
  overflow-y: auto;
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav a {
  display: block;
  padding: 12px 8px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mobile-nav a:hover {
  color: var(--primary);
}

body.nav-open {
  overflow: hidden;
}

.page-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 16px;
}

.site-footer {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border-top: 2px solid var(--border);
  padding: 48px 16px 32px;
  margin-top: 48px;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: repeating-linear-gradient(
    90deg,
    var(--primary) 0 12px,
    transparent 12px 24px
  );
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  gap: 28px;
}

.footer-brand p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 420px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}

.footer-links a {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.footer-badges img {
  height: 40px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
}

.footer-requisites {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--muted);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2,4,3,0.88);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  padding: 16px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  max-width: 420px;
  width: 100%;
  padding: 28px 24px;
  text-align: center;
  position: relative;
}

.modal-box::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px dashed var(--tech-rail);
  pointer-events: none;
}

.modal-box h2 {
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.modal-box p {
  color: var(--muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: var(--bg);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--secondary);
  border-color: var(--secondary);
  color: var(--text);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 16px;
  z-index: 2500;
  display: none;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.cookie-banner.active {
  display: flex;
}

.cookie-banner p {
  flex: 1 1 280px;
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.page-hero {
  padding: 48px 16px 32px;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(34,197,94,0.12), transparent 70%),
    var(--surface);
}

.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin-top: 8px;
}

.page-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

.page-content h2 {
  margin: 28px 0 12px;
  font-size: 1.25rem;
}

.page-content p {
  margin-bottom: 14px;
  color: rgba(209,250,229,0.88);
}

.page-content ul {
  margin: 0 0 16px 1.2rem;
  color: rgba(209,250,229,0.88);
}

.page-content li {
  margin-bottom: 6px;
}

.contact-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.contact-form label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px;
  font-family: var(--font);
  font-size: 1rem;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-form input.error,
.contact-form textarea.error {
  border-color: var(--primary);
}

.field-error {
  display: none;
  color: var(--primary);
  font-size: 0.85rem;
  margin-top: 6px;
}

.field-error.visible {
  display: block;
}

.form-success {
  display: none;
  margin-top: 24px;
  padding: 24px;
  border: 1px solid var(--primary);
  background: rgba(34,197,94,0.1);
}

.form-success.visible {
  display: block;
}

.topic-cta {
  display: inline-flex;
  margin-top: 20px;
  padding: 12px 18px;
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background 0.2s ease, color 0.2s ease;
}

.topic-cta:hover {
  background: var(--primary);
  color: var(--bg);
}

.decor-frame {
  max-width: 500px;
  max-height: 320px;
  overflow: hidden;
  margin: 16px 0;
}

.decor-frame img {
  max-width: 100%;
  max-height: 320px;
  width: auto;
  height: auto;
  object-fit: cover;
}

@keyframes engineering-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

@keyframes tech-scan {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes machinery-blink {
  0%, 100% { border-color: var(--border); }
  50% { border-color: var(--primary); }
}

@keyframes industrial-shift {
  0%, 100% { background-position: 0 0; }
  50% { background-position: 24px 24px; }
}

@media (min-width: 900px) {
  .nav-desktop {
    display: flex;
  }

  .burger {
    display: none;
  }

  .nav-overlay,
  .mobile-nav {
    display: none;
  }
}

@media (max-width: 767px) {
  .decor-frame,
  .footer-badges {
    max-width: 100%;
    overflow: hidden;
  }

  .footer-badges img {
    max-width: min(140px, 40vw);
    height: auto;
  }

  .disclosure-banner {
    flex-wrap: wrap;
    padding: 8px 12px;
  }

  .disclosure-banner p {
    max-width: 100%;
  }
}