@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@600;700&family=IBM+Plex+Mono:wght@400;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');
:root {
  --bg-concrete: #F4F5F7;
  --bg-panel: #FFFFFF;
  --steel-navy: #0E1726;
  --slate-muted: #475569;
  --crane-amber: #D97706;
  --safety-gold: #F59E0B;
  --bim-cyan: #0284C7;
  --rebar-border: #CBD5E1;
  --font-display: 'Chakra Petch', sans-serif;
  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-family: var(--font-sans); background: var(--bg-concrete); color: var(--steel-navy); line-height: 1.62; }
body { overflow-x: hidden; }
h1, h2, h3, .hero-title, .section-title { font-family: var(--font-display); text-wrap: balance; line-height: 1.08; letter-spacing: -0.01em; }
p, li { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 2px solid var(--safety-gold); outline-offset: 3px; }

/* UNIQUE HEADER: STRUCTURAL CAD/BIM 5D COORDINATE & THEODOLITE SURVEYING MASTHEAD */
.bim-structural-grid-header {
  background: var(--steel-navy); color: #F8FAFC;
  border-bottom: 3px solid var(--safety-gold); position: sticky; top: 0; z-index: 1000;
}
.cad-telemetry-strip {
  background: #070C15; color: #94A3B8; padding: 6px 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: 0.68rem; border-bottom: 1px solid #1E293B;
}
.cad-badges { display: flex; align-items: center; gap: 8px; }
.cad-tag {
  padding: 2px 8px; border-radius: 4px; font-weight: 700; font-size: 0.64rem;
}
.tag-crea { background: var(--safety-gold); color: #0E1726; }
.tag-pbqp { background: #0284C7; color: #FFF; }
.tag-nbr { background: #1E293B; color: #38BDF8; border: 1px solid #38BDF8; }

.bim-header-main {
  max-width: 1400px; margin: 0 auto; padding: 12px 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.truss-brand {
  display: flex; align-items: center; gap: 12px; padding: 6px 14px;
  background: #162235; border: 1.5px solid #334155; border-left: 4px solid var(--safety-gold); border-radius: 6px;
}
.truss-emblem {
  width: 38px; height: 38px; border-radius: 6px; background: var(--safety-gold); color: #0E1726;
  font-family: var(--font-mono); font-weight: 700; font-size: 0.82rem;
  display: flex; align-items: center; justify-content: center;
}
.bim-nav { display: flex; align-items: center; gap: 6px; }
.bim-link, .bim-drop-btn {
  min-height: 44px; padding: 8px 13px; border-radius: 6px;
  background: transparent; border: 1px solid transparent;
  font-family: var(--font-sans); font-size: 0.83rem; font-weight: 600; color: #E2E8F0;
  cursor: pointer; display: inline-flex; align-items: center; gap: 5px;
}
.bim-link:hover, .bim-drop-btn:hover {
  background: #1E293B; border-color: var(--safety-gold); color: var(--safety-gold);
}
.bim-drop { position: relative; }
.bim-drop-menu {
  position: absolute; top: 100%; left: 0; min-width: 295px; background: #0E1726;
  border: 2px solid var(--safety-gold); border-radius: 8px; padding: 8px;
  display: none; flex-direction: column; gap: 4px; box-shadow: 0 18px 40px rgba(0,0,0,0.45);
}
.bim-drop:hover .bim-drop-menu, .bim-drop:focus-within .bim-drop-menu { display: flex; }
.bim-drop-menu a {
  padding: 9px 12px; font-size: 0.8rem; font-weight: 500; border-radius: 5px; color: #F1F5F9;
}
.bim-drop-menu a:hover { background: var(--safety-gold); color: #0E1726; font-weight: 700; }

.bim-cta {
  background: var(--safety-gold); color: #0E1726; font-family: var(--font-mono); font-weight: 700;
  font-size: 0.75rem; min-height: 44px; padding: 10px 18px; border-radius: 6px;
  display: inline-flex; align-items: center; gap: 6px;
}
#mobileMenuToggle {
  display: none; min-height: 44px; padding: 8px 14px; background: var(--safety-gold); color: #0E1726;
  font-family: var(--font-mono); font-weight: 700; border: none; border-radius: 6px; cursor: pointer;
}
#mobileDrawer {
  display: none; position: fixed; inset: 0; background: #0E1726; color: #F8FAFC; z-index: 1050;
  padding: 28px; flex-direction: column; gap: 10px; overflow-y: auto;
}
#mobileDrawer.open { display: flex; }
#mobileDrawer a { padding: 12px; border-bottom: 1px solid #1E293B; font-weight: 600; color: #F8FAFC; }

/* UNIQUE FIRST SCREEN: 4-TYPOLOGY CIVIL & INDUSTRIAL ENGINEERING TURNKEY WORKBENCH */
.turnkey-bim-construction-workbench {
  max-width: 1380px; margin: 26px auto 46px; padding: 0 24px;
}
.bim-workbench-frame {
  background: var(--bg-panel); border: 2.5px solid var(--steel-navy); border-radius: 14px;
  overflow: hidden; box-shadow: 0 22px 50px rgba(14,23,38,0.12);
}
.typology-tabs-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); background: #162235;
  border-bottom: 3px solid var(--safety-gold);
}
.typo-tab-btn {
  min-height: 70px; padding: 12px 16px; border: none; border-right: 1px solid #334155;
  background: transparent; color: #CBD5E1; text-align: left; cursor: pointer; transition: all 0.2s;
}
.typo-tab-btn:last-child { border-right: none; }
.typo-tab-btn.active { background: var(--safety-gold); color: #0E1726; }
.typo-tab-btn small {
  display: block; font-family: var(--font-mono); font-size: 0.65rem; font-weight: 700; opacity: 0.9;
}
.typo-tab-btn strong {
  font-family: var(--font-display); font-size: 0.98rem;
}

.bim-workbench-grid {
  display: grid; grid-template-columns: 1.06fr 0.94fr; gap: 30px; padding: 34px; align-items: center;
}
.kicker-blueprint {
  display: inline-block; font-family: var(--font-mono); font-size: 0.71rem; font-weight: 700;
  background: #FEF3C7; color: #92400E; border: 1.5px solid #D97706;
  padding: 4px 12px; border-radius: 4px; margin-bottom: 12px;
}
.hero-title { font-size: clamp(1.9rem, 3vw, 2.75rem); margin-bottom: 14px; }
.structural-telemetry-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 20px 0;
}
.telemetry-cell {
  background: var(--bg-concrete); border: 1.5px solid var(--rebar-border); border-left: 4px solid var(--steel-navy);
  border-radius: 8px; padding: 12px 14px;
}
.telemetry-cell span {
  display: block; font-family: var(--font-mono); font-size: 0.65rem; color: var(--slate-muted); margin-bottom: 3px;
}
.telemetry-cell strong { font-size: 0.88rem; color: var(--steel-navy); }

.bim-visual-stage {
  position: relative; border-radius: 10px; overflow: hidden; border: 2.5px solid var(--steel-navy);
}
.bim-visual-stage img { width: 100%; height: 420px; object-fit: cover; }
.bim-cub-badge {
  position: absolute; bottom: 16px; right: 16px; background: var(--steel-navy); color: var(--safety-gold);
  border: 2px solid var(--safety-gold); padding: 10px 16px; border-radius: 8px;
  font-family: var(--font-mono); font-weight: 700; font-size: 0.84rem;
}

.section-block, .section-alt { max-width: 1340px; margin: 0 auto; padding: 58px 24px; }
.section-alt {
  content-visibility: auto; contain-intrinsic-size: auto 520px;
  background: #FFF; border: 2px solid var(--steel-navy); border-radius: 14px; margin-bottom: 38px;
}
.section-title { font-size: clamp(1.7rem, 2.5vw, 2.35rem); margin-bottom: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 22px; margin-top: 24px; }
.card-eng {
  background: var(--bg-concrete); border: 2px solid var(--steel-navy); border-radius: 10px;
  overflow: hidden; display: flex; flex-direction: column;
}
.card-eng img { width: 100%; height: 220px; object-fit: cover; border-bottom: 2px solid var(--steel-navy); }
.card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; gap: 10px; }

.btn-primary, .btn-outline, .header-cta {
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px;
  padding: 10px 20px; border-radius: 6px; font-family: var(--font-mono); font-size: 0.77rem; font-weight: 700; cursor: pointer;
}
.btn-primary { background: var(--steel-navy); color: var(--safety-gold); border: 2px solid var(--steel-navy); }
.btn-outline { background: #FFF; color: var(--steel-navy); border: 2px solid var(--steel-navy); }

.calc-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 24px; margin-top: 22px; }
.calc-box { background: var(--bg-concrete); border: 2px solid var(--steel-navy); border-radius: 10px; padding: 24px; }
.control-group { margin-bottom: 14px; }
.control-group label { display: block; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700; margin-bottom: 6px; }
.form-input, select {
  width: 100%; min-height: 46px; padding: 10px 12px; border-radius: 6px;
  border: 1.5px solid var(--steel-navy); background: #FFF; font-family: var(--font-sans); color: var(--steel-navy);
}
.form-input:user-valid { border-color: #10B981; }
.form-input:user-invalid { border-color: #EF4444; }
.price-big { font-family: var(--font-display); font-size: 2.3rem; font-weight: 700; color: var(--crane-amber); margin: 8px 0; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 0.86rem; }
.spec-table th, .spec-table td { padding: 12px; border: 1.5px solid var(--steel-navy); text-align: left; }
.spec-table th { background: var(--steel-navy); color: var(--safety-gold); font-family: var(--font-mono); font-size: 0.74rem; }

.accordion-item { border: 1.5px solid var(--steel-navy); border-radius: 8px; margin-bottom: 10px; background: #FFF; }
.accordion-header {
  width: 100%; min-height: 48px; padding: 14px 18px; background: none; border: none;
  color: var(--steel-navy); font-weight: 700; text-align: left; display: flex; justify-content: space-between; align-items: center; cursor: pointer;
}
.accordion-body { padding: 0 18px 16px; display: none; color: var(--slate-muted); font-size: 0.9rem; }
.accordion-item.open .accordion-body { display: block; }

.site-footer {
  content-visibility: auto; contain-intrinsic-size: auto 420px;
  background: var(--steel-navy); color: #CBD5E1; padding: 54px 24px; margin-top: 44px; border-top: 4px solid var(--safety-gold);
}
.footer-inner { max-width: 1340px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 26px; }
.cookie-banner {
  position: fixed; bottom: 18px; right: 20px; max-width: 430px; background: #FFF; color: var(--steel-navy);
  border: 2.5px solid var(--steel-navy); border-radius: 10px; padding: 16px; z-index: 995; font-size: 0.8rem;
  box-shadow: 0 16px 36px rgba(14,23,38,0.28);
}
@media (max-width: 1040px) {
  .bim-nav, .cad-telemetry-strip { display: none; }
  #mobileMenuToggle { display: inline-flex; align-items: center; }
  .typology-tabs-bar { grid-template-columns: repeat(2, 1fr); }
  .bim-workbench-grid, .calc-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* RADICAL REDESIGN 6: PANORAMIC BLUEPRINT OVERLAY & OVERLAPPING STEEL PILLARS */
.steel-gantry-header {
  background: #0B121E; color: #FFF; border-bottom: 4px solid #F59E0B; position: sticky; top: 0; z-index: 1000;
}
.steel-gantry-inner {
  max-width: 1420px; margin: 0 auto; display: grid; grid-template-columns: 280px 1fr 230px; align-items: stretch;
}
.steel-logo-chamfer {
  background: #F59E0B; color: #0B121E; padding: 14px 22px; display: flex; flex-direction: column; justify-content: center;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0% 100%);
}
.steel-center-links {
  display: flex; align-items: center; justify-content: center; gap: 18px; padding: 0 20px;
  font-family: var(--font-mono); font-size: 0.76rem; font-weight: 700;
}
.steel-art-stamp {
  background: #162235; border-left: 2px solid #F59E0B; padding: 10px 18px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.panoramic-elevation-hero {
  max-width: 1420px; margin: 0 auto 54px; padding: 0 20px;
}
.panoramic-photo-banner {
  position: relative; border: 3px solid #0E1726; border-top: none; min-height: 450px;
  display: grid; grid-template-columns: 1.15fr 0.85fr; overflow: hidden; background: #0E1726;
}
.panoramic-bg-img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.42;
}
.panoramic-blueprint-left {
  position: relative; z-index: 2; padding: 38px 36px 84px;
  background: linear-gradient(90deg, rgba(11,18,30,0.96) 0%, rgba(11,18,30,0.84) 80%, transparent 100%);
  color: #FFF;
}
.panoramic-right-window {
  position: relative; z-index: 2; padding: 28px; display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-end;
}
.overlapping-pillars-dock {
  position: relative; z-index: 5; max-width: 1340px; margin: -58px auto 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding: 0 16px;
}
.structural-pillar-card {
  background: #FFF; border: 2.5px solid #0E1726; border-top: 6px solid #F59E0B; padding: 18px;
  box-shadow: 0 18px 36px rgba(14,23,38,0.16);
}
.structural-pillar-card span {
  display: block; font-family: var(--font-mono); font-size: 0.64rem; color: #475569; margin-bottom: 4px; font-weight: 700;
}
.structural-pillar-card strong { font-size: 0.88rem; color: #0E1726; display: block; }
.typo-pill-selector {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0;
}
.nr-mode-btn {
  padding: 8px 14px; background: rgba(22,34,53,0.9); border: 1.5px solid #F59E0B; color: #F8FAFC;
  font-family: var(--font-mono); font-size: 0.71rem; font-weight: 700; cursor: pointer;
}
.nr-mode-btn.active { background: #F59E0B; color: #0B121E; }
@media (max-width: 1040px) {
  .steel-gantry-inner, .panoramic-photo-banner, .overlapping-pillars-dock { grid-template-columns: 1fr; }
  .steel-center-links { display: none; }
  .overlapping-pillars-dock { margin-top: 16px; }
}

/* COOKIE_DIFF_APPLIED */
.cookie-banner { left: 20px !important; right: auto !important; bottom: 16px !important; max-width: 380px !important; background: #0E1726 !important; color: #F8FAFC !important; border: 2px solid #F59E0B !important; border-radius: 4px !important; padding: 12px 16px !important; }