:root {
  --bt-shell-width: 1180px;
  --bt-navy: #102a56;
  --bt-navy-2: #173c75;
  --bt-yellow: #ffc400;
  --bt-text: #17233b;
  --bt-muted: #66738d;
  --bt-line: #e5eaf2;
  --bt-header-height: 112px;
  --bt-header-height-compact: 88px;
  --bt-header-logo-width: 216px;
}

html { scrollbar-gutter: stable; overflow-x: clip; scroll-padding-top: 124px; }
body {
  margin: 0 !important;
  min-width: 320px;
  overflow-x: clip;
  font-family: Manrope, Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif !important;
  color: var(--bt-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
*, *::before, *::after { box-sizing: border-box; }
body > .topbar { display: none !important; }

.container {
  width: calc(100% - 40px) !important;
  max-width: var(--bt-shell-width) !important;--bt-max-width:var(--bt-shell-width)!important;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* One stable header on every page. */
.header {
  position: sticky !important;
  top: 0 !important;
  right: auto !important;
  bottom: auto !important;
  left: auto !important;
  width: 100% !important;
  min-height: var(--bt-header-height) !important;
  padding: 0 !important;
  margin: 0 !important;
  background: #fff !important;
  border: 0 !important;
  border-bottom: 1px solid var(--bt-line) !important;
  box-shadow: 0 1px 0 rgba(16, 42, 86, .03) !important;
  z-index: 1000 !important;
}
.header > .container {
  min-height: var(--bt-header-height) !important;
  display: flex !important;
  align-items: center !important;
  gap: 26px !important;
  padding: 0 !important;
}
.header .logo {
  width: var(--bt-header-logo-width) !important;
  min-width: var(--bt-header-logo-width) !important;
  height: 54px !important;--bt-css-height:54px!important;
  display: flex !important;
  align-items: center !important;
  padding: 0 !important;
  margin: 0 !important;
}
.header .logo span:where(.bt-background-image) {
  display: block !important;
  width: var(--bt-header-logo-width) !important;
  max-width: var(--bt-header-logo-width) !important;--bt-max-width:var(--bt-header-logo-width)!important;
  height: 41px !important;--bt-css-height:41px!important;
  max-height: 41px !important;--bt-max-height:41px!important;
  object-fit: contain !important;
  object-position: left center !important;--bt-position:left center!important;
}
.header .nav {
  position: static !important;
  flex: 1 1 auto !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 18px !important;
  padding: 0 !important;
  margin: 0 !important;
  list-style: none !important;
}
.header .nav > li { position: relative !important; margin: 0 !important; padding: 0 !important; }
.header .nav > li > a,
.header .nav > a {
  min-height: 48px !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 4px !important;
  padding: 0 !important;
  color: var(--bt-text) !important;
  font-size: 15px !important;
  font-weight: 700 !important;
  line-height: 1.2 !important;
  text-decoration: none !important;
  white-space: nowrap !important;
}
.header .nav > li > a:hover,
.header .nav > a:hover { color: var(--bt-navy-2) !important; }
.header .caret { width: 14px !important; height: 14px !important;--bt-css-height:14px!important; }
.header .header-cta {
  min-width: 292px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: flex-end !important;
  gap: 16px !important;
  padding: 0 !important;
  margin: 0 !important;
}
.header .header-phone {
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-end !important;
  color: var(--bt-navy) !important;
  font-size: 16px !important;
  font-weight: 800 !important;
  line-height: 1.1 !important;
  text-decoration: none !important;
  white-space: nowrap !important;
}
.header .header-phone small {
  margin-top: 4px !important;
  color: var(--bt-muted) !important;
  font-size: 11px !important;
  font-weight: 600 !important;
}
.header .btn-primary {
  min-height: 52px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0 22px !important;
  border: 1px solid var(--bt-navy) !important;
  border-radius: 10px !important;
  background: var(--bt-navy) !important;
  color: #fff !important;
  font-size: 15px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  text-decoration: none !important;
  white-space: nowrap !important;
  box-shadow: none !important;
}
.header .btn-primary:hover { background: var(--bt-navy-2) !important; }
.header .mega,
.header .drop {
  top: calc(100% + 8px) !important;
  border: 1px solid var(--bt-line) !important;
  border-radius: 12px !important;
  background: #fff !important;
  box-shadow: 0 18px 50px rgba(16, 42, 86, .14) !important;
}
.header .mega a,
.header .drop a { font-family: inherit !important; }
.header .mega-grid a {
  min-height: 50px !important;
  gap: 10px !important;
}
.header .bt-product-mark {
  width: 52px !important;
  height: 28px !important;--bt-css-height:28px!important;
  flex: 0 0 52px !important;
  display: inline-block !important;
  border: 0 !important;
  border-radius: 6px !important;
  background-color: #fff !important;
  background-repeat: no-repeat !important;
  background-position: center !important;
  background-size: contain !important;
  transform: none !important;
}
.header .bt-product-mark--normacs { background-image: url("./normacs-logo.webp") !important; }
.header .bt-product-mark--nanocad { background-image: url("./nanocad-logo.webp") !important; }
.header .bt-product-mark--tekhekspert { background-image: url("./tekhekspert-logo.webp") !important; }
.header .bt-product-mark--kompas { background-image: url("./kompas-3d-logo.webp") !important; }
.header .bt-product-mark--astra { background-image: url("./astra-logo.svg") !important; }
.header .bt-product-mark--modelstudio {
  background-image: url("./modelstudio-logo.webp") !important;
  background-size: contain !important;
}

.bt-burger {
  width: 48px;
  height: 48px;--bt-css-height:48px;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
  border: 1px solid var(--bt-line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}
.bt-burger span:not(:where(.bt-background-image)) { width: 20px; height: 2px;--bt-css-height:2px; display: block; border-radius: 2px; background: var(--bt-navy); }
.drawer:not(.bt-unified-drawer) { display: none !important; }
.bt-unified-drawer {
  display: none !important;
  position: fixed !important;
  top: var(--bt-header-height-compact) !important;
  right: 0 !important;
  bottom: 0 !important;
  left: 0 !important;
  z-index: 9999 !important;
  overflow-y: auto !important;
  padding: 18px 20px 28px !important;
  background: #fff !important;
  border-top: 1px solid var(--bt-line) !important;
}
.bt-unified-drawer.open { display: block !important; }
.bt-unified-drawer a {
  min-height: 48px !important;
  display: flex !important;
  align-items: center !important;
  padding: 0 4px !important;
  border-bottom: 1px solid var(--bt-line) !important;
  color: var(--bt-text) !important;
  font-size: 16px !important;
  font-weight: 750 !important;
  text-decoration: none !important;
}
body.bt-menu-open { overflow: hidden !important; }

/* Stable shared rhythm without flattening product-specific content. */
h1, h2, h3, h4, button, input, textarea, select { font-family: inherit !important; }
.crumbs {
  min-height: 44px !important;
  display: flex !important;
  align-items: center !important;
  flex-wrap: wrap !important;
  gap: 6px !important;
  padding-top: 10px !important;
  padding-bottom: 10px !important;
  font-size: 13px !important;
  line-height: 1.35 !important;
}
main span:where(.bt-background-image), section span:where(.bt-background-image) { max-width: 100%;--bt-max-width:100000px; }
.interface-screen span:where(.bt-background-image), .screen span:where(.bt-background-image), span:where(.bt-background-image).interface-screen {
  width: 100% !important;
  height: auto !important;--bt-css-height:var(--bt-natural-height)!important;
  object-fit: contain !important;
}

/* One stable footer on every page. */
.footer {
  width: 100% !important;
  padding: 56px 0 24px !important;
  margin: 0 !important;
  background: #0d1d3b !important;
  color: #dbe4f5 !important;
  border: 0 !important;
}
.footer .footer-top {
  display: grid !important;
  grid-template-columns: 1.4fr .8fr .8fr 1fr !important;
  gap: 42px !important;
  padding: 0 0 34px !important;
  margin: 0 !important;
}
.footer .footer-logo { display: inline-flex !important; align-items: center !important; height: 34px !important;--bt-css-height:34px!important; }
.footer .footer-logo span:where(.bt-background-image) {
  display: block !important;
  width: 174px !important;
  max-width: 174px !important;--bt-max-width:174px!important;
  height: 33px !important;--bt-css-height:33px!important;
  object-fit: contain !important;
  object-position: left center !important;--bt-position:left center!important;
  filter: brightness(0) invert(1) !important;
}
.footer .footer-about {
  max-width: 360px !important;--bt-max-width:360px!important;
  margin: 18px 0 0 !important;
  color: #aebbd2 !important;
  font-size: 14px !important;
  line-height: 1.65 !important;
}
.footer .footer-col { margin: 0 !important; padding: 0 !important; }
.footer .footer-col h4 {
  margin: 0 0 16px !important;
  color: #fff !important;
  font-size: 14px !important;
  font-weight: 800 !important;
}
.footer .footer-col a,
.footer .footer-contact a {
  display: block !important;
  margin: 0 0 10px !important;
  color: #c6d1e5 !important;
  font-size: 14px !important;
  line-height: 1.45 !important;
  text-decoration: none !important;
}
.footer .footer-col a:hover { color: #fff !important; }
.footer .footer-contact p { color: #9eacc5 !important; font-size: 13px !important; line-height: 1.55 !important; }
.footer .footer-bot {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 20px !important;
  padding: 22px 0 0 !important;
  margin: 0 !important;
  border-top: 1px solid rgba(255,255,255,.12) !important;
  color: #91a0bb !important;
  font-size: 13px !important;
}
.footer .footer-bot a { color: #aebbd2 !important; text-decoration: none !important; }

@media (max-width: 1180px) {
  .header .nav { gap: 10px !important; }
  .header .header-cta { min-width: 264px !important; }
  .header .header-phone small { display: none !important; }
}
@media (max-width: 1040px) {
  html { scroll-padding-top: 100px; }
  .header { min-height: var(--bt-header-height-compact) !important; }
  .header > .container { min-height: var(--bt-header-height-compact) !important; }
  .header .nav { display: none !important; }
  .header .header-cta { min-width: 0 !important; margin-left: auto !important; }
  .header .header-phone { display: none !important; }
  .header .btn-primary { display: none !important; }
  .bt-burger { display: flex !important; }
  .footer .footer-top { grid-template-columns: 1.25fr 1fr 1fr !important; }
  .footer .footer-contact { grid-column: 1 / -1 !important; }
}
@media (max-width: 700px) {
  .container { width: calc(100% - 32px) !important; }
  .header .logo,
  .header .logo span:where(.bt-background-image) { width: 172px !important; min-width: 172px !important; max-width: 172px !important;--bt-max-width:172px!important; }
  .footer { padding-top: 42px !important; }
  .footer .footer-top { grid-template-columns: 1fr 1fr !important; gap: 30px 24px !important; }
  .footer .footer-top > div:first-child,
  .footer .footer-contact { grid-column: 1 / -1 !important; }
  .footer .footer-bot { align-items: flex-start !important; flex-direction: column !important; }
}
@media (max-width: 430px) {
  .footer .footer-top { grid-template-columns: 1fr !important; }
  .footer .footer-top > div,
  .footer .footer-contact { grid-column: auto !important; }
}

/* BT-SAFE-ROUND2: related product links and final-form consent */
.bt-related-section .s-head { margin-bottom: 24px !important; }
.bt-related-grid {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  gap: 12px !important;
}
.bt-related-link {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 16px !important;
  min-height: 64px !important;
  padding: 16px 18px !important;
  border: 1px solid #dce5f1 !important;
  border-radius: 14px !important;
  background: #fff !important;
  color: #142445 !important;
  font-size: 15px !important;
  font-weight: 750 !important;
  line-height: 1.35 !important;
  text-decoration: none !important;
  box-shadow: 0 5px 18px rgba(19, 42, 78, .05) !important;
}
.bt-related-link::after {
  content: "→" !important;
  flex: 0 0 auto !important;
  color: #168bb6 !important;
  font-size: 20px !important;
}
.bt-related-link:hover {
  border-color: #90cfe5 !important;
  color: #0c769d !important;
  transform: translateY(-1px) !important;
}
.final-form .consent-row {
  flex: 1 0 100% !important;
  display: flex !important;
  align-items: flex-start !important;
  gap: 14px !important;
  font-size: 12px !important;
  line-height: 1.45 !important;
}
.final-form .consent-row input[type="checkbox"] { width: 18px !important; height: 18px !important;--bt-css-height:18px!important; min-width: 18px !important; min-height: 18px !important; flex: 0 0 18px !important; margin: 2px 0 0 !important; padding: 0 !important; }
.final-form .consent-row label { flex: 1 1 auto !important; min-width: 0 !important; }
.final-form .consent-row a { color: inherit !important; text-decoration: underline !important; }
@media (max-width: 900px) {
  .bt-related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
}
@media (max-width: 600px) {
  .bt-related-grid { grid-template-columns: 1fr !important; }
  .bt-related-link { min-height: 58px !important; padding: 14px 16px !important; }
}