:root {
  --brand-charcoal: #0d1321;
  --brand-accent: #e23a1a;
  --brand-accent-dark: #b52e15;
  --brand-steel: #6b7280;
  --brand-coolgray: #f1f3f5;

  /* Legacy variable names kept (used in ~60 places) but now aliased to the
     Industrial Thermal Design brand palette instead of Powerblanket green. */
  --green-900: var(--brand-charcoal);
  --green-800: var(--brand-accent-dark);
  --green-700: var(--brand-accent-dark);
  --green-600: var(--brand-accent);
  --green-100: var(--brand-coolgray);
  --green-50: var(--brand-coolgray);
  --amber: #e8823c;
  --ink: #1a1f1b;
  --ink-soft: #4b5563;
  --paper: #ffffff;
  --paper-alt: var(--brand-coolgray);
  --border: #e5e9e5;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(13, 19, 33, 0.06), 0 8px 24px -8px rgba(13, 19, 33, 0.12);
  --shadow-lg: 0 20px 45px -18px rgba(13, 19, 33, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.68;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-size: 17px;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 {
  font-family: inherit;
  font-weight: 800;
  line-height: 1.15;
  color: var(--green-900);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); margin: 0 0 0.6rem; }
h3 { font-size: 1.1rem; font-weight: 700; margin: 0 0 0.5rem; letter-spacing: -0.01em; }

p { max-width: 68ch; }

/* ---------- Header / brand ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.header-inner-minimal { justify-content: flex-end; }

.brand-lockup { display: flex; align-items: center; text-decoration: none; }
.brand-logo { height: 38px; width: auto; display: block; }

.btn-sm { padding: 10px 20px; font-size: 0.8rem; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 130px 0 110px;
  overflow: hidden;
  isolation: isolate;
  background: var(--green-900);
}

.hero-slideshow { position: absolute; inset: 0; z-index: -2; overflow: hidden; }

.hero-slide {
  position: absolute;
  inset: -3%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  filter: saturate(1.25) contrast(1.05);
  animation: heroSlideCycle 40s infinite;
  animation-fill-mode: backwards;
}

/* 4-slide rotation, 10s each, real Powerblanket shop-floor photography */
.hero-slide:nth-child(1) { animation-delay: 0s; }
.hero-slide:nth-child(2) { animation-delay: 10s; }
.hero-slide:nth-child(3) { animation-delay: 20s; }
.hero-slide:nth-child(4) { animation-delay: 30s; }

@keyframes heroSlideCycle {
  0%     { opacity: 0; transform: scale(1.08) translate(0, 0); }
  2.5%   { opacity: 1; }
  22.5%  { opacity: 1; transform: scale(1.16) translate(-1.5%, -1%); }
  25%    { opacity: 0; }
  100%   { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide { animation: none; opacity: 0; }
  .hero-slide:first-child { opacity: 1; }
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(65% 60% at 22% 20%, rgba(226,58,26,0.22), transparent 62%),
    linear-gradient(100deg, rgba(13,19,33,0.82) 0%, rgba(13,19,33,0.62) 35%, rgba(13,19,33,0.28) 60%, rgba(13,19,33,0.15) 100%),
    linear-gradient(180deg, rgba(13,19,33,0.1) 0%, rgba(13,19,33,0.15) 55%, rgba(13,19,33,0.75) 100%);
}

.hero-inner { max-width: 720px; }

.credibility-line {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #dde1e6;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.22);
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 10px;
  margin-right: 10px;
}

.credibility-sub {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  color: #9aa1ab;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2.2rem, 4.8vw, 3.4rem);
  margin-bottom: 1.1rem;
  color: #fff;
  font-weight: 900;
  letter-spacing: -0.025em;
}

.hero .lead { font-size: 1.15rem; color: #dde1e6; margin-bottom: 2rem; max-width: 620px; font-weight: 400; }

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions-note { margin: 14px 0 0; font-size: 0.85rem; color: #9aa1ab; }

/* ---------- Engineering banner ---------- */

.engineering-banner { background: #fff; border-bottom: 3px solid var(--green-700); padding: 14px 0; position: sticky; top: 0; z-index: 100; }
.engineering-banner-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.engineering-banner-brand { display: flex; flex-direction: column; align-items: flex-start; }
.engineering-banner-title-link { text-decoration: none; }
.engineering-banner-title { margin: 0; font-size: 1.6rem; font-weight: 900; color: var(--brand-charcoal); letter-spacing: -0.01em; line-height: 1.15; }
.brand-accent { color: var(--brand-accent); }
.engineering-banner-byline { display: flex; align-items: center; gap: 7px; margin: 6px 0 0; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-soft); }
.engineering-banner-byline a { display: block; line-height: 0; }
.engineering-banner-byline-logo { width: 180px; max-width: 100%; height: auto; display: block; }
.btn-banner { padding: 12px 22px; font-size: 0.85rem; white-space: nowrap; }

@media (max-width: 700px) {
  .engineering-banner-inner { flex-direction: column; align-items: flex-start; }
  .btn-banner { align-self: stretch; text-align: center; }
}

/* ---------- Ken Burns on real photography ---------- */

.kb-zoom-wrap { overflow: hidden; }
.kb-zoom { transform: scale(1.08); transition: transform 2.4s cubic-bezier(0.16,1,0.3,1); }
.hero-bg .kb-zoom { transform: scale(1.08); animation: heroKenBurns 14s ease-in-out infinite alternate; }

@keyframes heroKenBurns {
  from { transform: scale(1.08) translate(0, 0); }
  to { transform: scale(1.16) translate(-1%, -1%); }
}

.reveal.is-visible .kb-zoom:not(.hero-bg .kb-zoom) { transform: scale(1); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary { background: var(--green-600); color: #fff; box-shadow: 0 10px 24px -8px rgba(226,58,26,0.5); }
.btn-primary:hover { background: var(--green-700); transform: translateY(-2px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; text-align: center; }

.btn-outline { background: rgba(255,255,255,0.05); color: #fff; border: 1px solid rgba(255,255,255,0.7); }
.btn-outline:hover { background: rgba(255,255,255,0.14); transform: translateY(-2px); }

.btn-outline-dark { background: transparent; color: var(--green-900); border: 1.5px solid var(--green-900); padding: 12px 24px; font-size: 0.85rem; }
.btn-outline-dark:hover { background: var(--green-900); color: #fff; transform: translateY(-2px); }

/* ---------- Layout ---------- */

.section { padding: 60px 0; }
.section-alt { background: var(--paper-alt); }
.section-intro { color: var(--ink-soft); max-width: 640px; margin-bottom: 1.4rem; font-size: 1.02rem; }

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--green-700);
  margin: 0 0 12px;
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }

.disclaimer { font-size: 0.85rem; color: var(--ink-soft); margin-top: 1.4rem; font-style: italic; }

/* ---------- Why It Matters: risk list ---------- */

.risk-list { list-style: none; margin: 1.4rem 0 0; padding: 0; }
.risk-list li { padding: 12px 0 12px 26px; border-top: 1px solid var(--border); position: relative; color: var(--ink-soft); }
.risk-list li:first-child { border-top: none; }
.risk-list li::before { content: ""; position: absolute; left: 0; top: 20px; width: 8px; height: 8px; border-radius: 50%; background: var(--amber); }
.risk-list strong { color: var(--ink); }

/* ---------- Interactive cutaway ---------- */

.anatomy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; margin-top: 12px; }

.cutaway-wrap { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); text-align: center; }
.cutaway { width: 100%; max-width: 260px; }

.cutaway-layer { cursor: pointer; transform-box: fill-box; transform-origin: center; transition: transform 0.28s cubic-bezier(0.22,1,0.36,1), filter 0.28s ease; outline: none; }
.cutaway-layer:hover, .cutaway-layer:focus-visible, .cutaway-layer.is-active { transform: scale(1.05); filter: drop-shadow(0 0 8px rgba(232,130,60,0.55)); }

.diagram-caption { margin: 10px 0 0; font-size: 0.9rem; color: var(--ink-soft); min-height: 2.6em; }

.diagram-legend { list-style: none; margin: 8px 0 0; padding: 0; text-align: left; font-size: 0.88rem; color: var(--ink-soft); }
.diagram-legend li { display: flex; align-items: center; gap: 10px; padding: 5px 6px; border-radius: 6px; cursor: pointer; transition: background 0.2s ease; }
.diagram-legend li.is-active, .diagram-legend li:hover { background: var(--green-100); }
.diagram-legend .swatch { width: 13px; height: 13px; border-radius: 4px; flex-shrink: 0; }

.anatomy-strip-wrap { display: flex; flex-direction: column; justify-content: center; }
.anatomy-strip-label { font-weight: 700; margin: 0 0 12px; color: var(--ink); }

.anatomy-strip { display: flex; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow); }

.strip-seg { padding: 18px 10px; text-align: center; font-size: 0.78rem; font-weight: 700; color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
.strip-seg span { font-size: 0.68rem; font-weight: 500; opacity: 0.85; }
.strip-unheated { background: #9ca3af; flex: 0.7; }
.strip-fitting { background: var(--green-900); flex: 0.4; }
.strip-heated { background: var(--amber); flex: 2; }

.temp-class-note {
  margin-top: 20px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.temp-class-note p { font-size: 0.92rem; margin: 0 0 8px; color: var(--ink); }
.temp-class-note ul { margin: 0; padding-left: 20px; }
.temp-class-note li { font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 6px; }
.temp-class-note li:last-child { margin-bottom: 0; }

.construction-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

@media (max-width: 700px) {
  .construction-compare { grid-template-columns: 1fr; }
}

.construction-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.construction-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 1.378;
  display: block;
  margin-bottom: 16px;
}

.construction-card h3 { font-size: 1rem; margin-bottom: 8px; }
.construction-card p { font-size: 0.82rem; color: var(--ink-soft); margin: 0; max-width: none; }

.anatomy-photo-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.anatomy-photo-row figure { margin: 0; }
.anatomy-photo-row img { width: 100%; height: 260px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); display: block; }
.anatomy-photo-row figcaption { margin-top: 10px; font-size: 0.85rem; color: var(--ink-soft); }

@media (max-width: 700px) { .anatomy-photo-row { grid-template-columns: 1fr; } }


/* ---------- Engineering guide ---------- */

.engineering-block { margin-top: 32px; }
.engineering-block:first-of-type { margin-top: 32px; }
.engineering-block h3 { font-size: 1.3rem; margin-bottom: 16px; }
.engineering-block > p { color: var(--ink-soft); max-width: 760px; margin: 0 0 20px; }

.heater-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.heater-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.heater-card h4 { font-size: 1.05rem; margin: 0 0 10px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.heater-tag { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--green-800); background: var(--green-100); padding: 3px 8px; border-radius: 999px; }
.heater-spec { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.heater-card > p:not(.heater-spec):not(.heater-label) { font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 14px; }
.heater-label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin: 0 0 8px; }
.heater-label-good { color: var(--green-700); }
.heater-label-watch { color: var(--amber); }
.heater-card ul { list-style: none; margin: 0 0 16px; padding: 0; }
.heater-card ul:last-of-type { margin-bottom: 0; }
.heater-card li { font-size: 0.88rem; color: var(--ink-soft); padding: 5px 0 5px 18px; position: relative; }
.heater-card li::before { content: "\2022"; position: absolute; left: 2px; color: var(--green-600); font-weight: 700; }

.table-scroll { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); }
.material-table { width: 100%; border-collapse: collapse; background: #fff; font-size: 0.86rem; min-width: 720px; }
.material-table th, .material-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.material-table th { background: var(--paper-alt); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--green-800); font-weight: 700; }
.material-table tbody tr:last-child td { border-bottom: none; }
.material-table td:first-child { font-weight: 700; color: var(--ink); white-space: nowrap; }
.material-table td { color: var(--ink-soft); }
.table-note { font-weight: 400; font-size: 0.8rem; color: var(--ink-soft); }

/* Below 700px, tables become stacked cards instead of a horizontally-scrolling grid —
   every column stays fully readable without an awkward sideways scroll. */
@media (max-width: 700px) {
  .table-scroll { overflow-x: visible; border: none; box-shadow: none; border-radius: 0; }
  .material-table { min-width: 0; width: 100%; font-size: 0.88rem; }
  .material-table thead { display: none; }
  .material-table, .material-table tbody, .material-table tr, .material-table td { display: block; width: 100%; }
  .material-table tr {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
    box-shadow: var(--shadow); margin-bottom: 14px; padding: 4px 16px;
  }
  .material-table td { padding: 8px 0; border-bottom: 1px solid var(--border); }
  .material-table tr td:last-child { border-bottom: none; }
  .material-table td:first-child {
    font-size: 1.02rem; white-space: normal; padding-top: 12px; padding-bottom: 10px;
    border-bottom: 2px solid var(--green-600);
  }
  .material-table td[data-label]::before {
    content: attr(data-label); display: block; font-size: 0.7rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em; color: var(--green-700); margin-bottom: 3px;
  }
}

.power-chart-controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 24px 0 8px; max-width: 760px; }
.power-chart-controls .config-field { margin: 0; }
.power-chart-controls label { display: block; font-size: 0.8rem; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.power-chart-controls select { width: 100%; padding: 9px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.9rem; font-family: inherit; background: #fff; color: var(--ink); }

.power-chart-wrap { position: relative; max-width: 760px; margin-top: 20px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.power-chart-wrap svg { width: 100%; height: auto; display: block; overflow: visible; }
.power-chart-axis { stroke: var(--border); stroke-width: 1; }
.power-chart-gridline { stroke: var(--border); stroke-width: 1; opacity: 0.6; }
.power-chart-line { fill: none; stroke-width: 2.5; }
.power-chart-line-theoretical { stroke: var(--green-600); stroke-dasharray: 5 4; }
.power-chart-line-recommended { stroke: #e8823c; }
.power-chart-crosshair { stroke: var(--ink-soft); stroke-width: 1; stroke-dasharray: 3 3; opacity: 0.7; }
.power-chart-dot { stroke: #fff; stroke-width: 2; }
.power-chart-dot-theoretical { fill: var(--green-700); }
.power-chart-dot-recommended { fill: #e8823c; }
.power-chart-label { font-size: 13px; fill: var(--ink-soft); font-family: 'Inter', sans-serif; }
.power-chart-axis-title { font-size: 14px; fill: var(--ink); font-weight: 700; font-family: 'Inter', sans-serif; }
.power-chart-legend { display: flex; gap: 20px; flex-wrap: wrap; margin: 10px 0 0; font-size: 0.85rem; color: var(--ink-soft); }
.power-chart-legend-item { display: flex; align-items: center; gap: 8px; }
.power-chart-legend-swatch { display: inline-block; width: 22px; height: 0; border-top: 3px solid; }
.power-chart-legend-swatch.theoretical { border-top-style: dashed; border-top-color: var(--green-600); }
.power-chart-legend-swatch.recommended { border-top-style: solid; border-top-color: #e8823c; }
.power-chart-tooltip-recommended { color: #f4a86a; font-weight: 600; }
.power-chart-tooltip-theoretical { color: #b7d9c2; }

.power-chart-tooltip {
  position: absolute; pointer-events: none; background: var(--green-900); color: #fff;
  padding: 8px 12px; border-radius: 8px; font-size: 0.8rem; line-height: 1.4;
  transform: translate(-50%, -110%); white-space: nowrap; box-shadow: var(--shadow-lg); z-index: 5;
}
.power-chart-tooltip strong { color: #fff; }

@media (max-width: 700px) {
  .power-chart-controls { grid-template-columns: 1fr; }
}

.cost-tier { font-weight: 800; letter-spacing: 0.02em; }
.cost-tier[data-tier="1"] { color: var(--green-700); }
.cost-tier[data-tier="2"] { color: #b8860b; }
.cost-tier[data-tier="3"] { color: var(--amber); }
.cost-tier[data-tier="4"] { color: #b0402a; }

@media (max-width: 860px) {
  .heater-compare { grid-template-columns: 1fr; }
}

.engineering-photo { margin: 24px 0 0; }
.engineering-photo img { width: 100%; height: 220px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.engineering-photo figcaption { margin-top: 10px; font-size: 0.82rem; color: var(--ink-soft); font-style: italic; }
.engineering-photo-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.engineering-photo-row .engineering-photo { margin-top: 0; }

@media (max-width: 700px) {
  .engineering-photo-row { grid-template-columns: 1fr; }
}

/* ---------- Capabilities ---------- */

.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 24px; }
.capability-grid-narrow { grid-template-columns: repeat(2, 1fr); max-width: 640px; }
.capability-group h3 { padding-bottom: 10px; border-bottom: 2px solid var(--green-600); margin-bottom: 14px; display: inline-block; }
.capability-group ul { list-style: none; margin: 0; padding: 0; }
.capability-group li { padding: 6px 0; color: var(--ink-soft); font-size: 0.94rem; }

/* ---------- Applications ---------- */

.app-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 24px; }

.app-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s ease; }
.app-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.app-card img { width: 100%; height: 200px; object-fit: cover; display: block; }
.app-card-body { padding: 24px; }
.app-card-body p { color: var(--ink-soft); font-size: 0.94rem; margin-bottom: 0; }
.app-grid-cta { text-align: center; margin-top: 32px; font-size: 1.02rem; color: var(--ink-soft); }
.app-grid-cta .btn { display: inline-block; margin-top: 14px; }

/* ---------- Shop floor gallery ---------- */

.shop-video { margin-top: 24px; max-width: 760px; }
.shop-video video { width: 100%; aspect-ratio: 1.461; border-radius: var(--radius); box-shadow: var(--shadow-lg); display: block; background: #000; }
.shop-video-caption { margin-top: 10px; font-size: 0.88rem; color: var(--ink-soft); }

.shop-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.shop-gallery figure { margin: 0; }
.shop-gallery img { width: 100%; height: 220px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); display: block; }
.shop-gallery figcaption { margin-top: 10px; font-size: 0.85rem; color: var(--ink-soft); }

@media (max-width: 900px) { .shop-gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .shop-gallery { grid-template-columns: 1fr; } }

/* ---------- Case study ---------- */

.case-study-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; margin-top: 24px; align-items: start; }
.case-study-specs { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px 28px; margin: 0; }
.case-study-note { color: var(--ink-soft); font-size: 0.95rem; }

@media (max-width: 860px) { .case-study-grid { grid-template-columns: 1fr; } }

/* ---------- Shared field styling (used by the power-density chart controls) ---------- */

.config-field { margin-bottom: 22px; }
.config-field label.field-label { display: block; font-weight: 600; font-size: 0.92rem; margin-bottom: 8px; color: var(--ink); }

.config-field input[type="text"], .config-field input[type="number"], .config-field input[type="email"],
.config-field input[type="tel"], .config-field input[type="date"], .config-field input[type="file"],
.config-field select, .config-field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 0.98rem; font-family: inherit; background: #fff;
}
.config-field input:focus, .config-field select:focus, .config-field textarea:focus {
  outline: none; border-color: var(--green-600); box-shadow: 0 0 0 3px rgba(226,58,26,0.15);
}

/* Case-study spec list */

.review-row { display: flex; justify-content: space-between; gap: 16px; padding: 5px 0; font-size: 0.92rem; }
.review-row dt { color: var(--ink-soft); flex-shrink: 0; }
.review-row dd { margin: 0; font-weight: 600; color: var(--ink); text-align: right; }

/* ---------- Resources ---------- */

.resource-list { display: flex; flex-direction: column; margin-top: 20px; }
.resource-link { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; border-top: 1px solid var(--border); text-decoration: none; color: var(--ink); font-weight: 600; }
.resource-link:last-child { border-bottom: 1px solid var(--border); }
.resource-link.is-soon { color: var(--ink-soft); cursor: default; }

.resource-tag { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); background: var(--paper-alt); border: 1px solid var(--border); padding: 3px 10px; border-radius: 999px; }
.resource-link:not(.is-soon) .resource-tag { color: var(--green-800); background: var(--green-100); border-color: transparent; }

/* ---------- FAQ ---------- */

.faq-list { max-width: 780px; margin-top: 24px; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; padding: 4px 20px; }
.faq-item summary { padding: 16px 0; font-weight: 700; color: var(--ink); cursor: pointer; list-style: none; position: relative; padding-right: 28px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 1.3rem; font-weight: 400; color: var(--green-700); }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { color: var(--ink-soft); margin: 0 0 18px; max-width: none; }

/* ---------- Ask an Engineer — closing CTA band, reused verbatim across subdomain pages ---------- */

.section-cta-band { background: var(--green-900); color: #fff; text-align: center; }
.section-cta-band h2 { color: #fff; }
.section-cta-band p { color: #d1d5db; }
.kicker-on-dark { color: var(--amber); }
.cta-band-inner { max-width: 560px; margin: 0 auto; }
.cta-band-inner .btn { margin-top: 8px; }

.site-footer { padding: 40px 0; border-top: 1px solid var(--border); color: var(--ink-soft); font-size: 0.85rem; }
.site-footer p { max-width: none; }
.site-footer p:first-child { max-width: 70ch; margin-bottom: 12px; }

/* ---------- Reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .app-card:hover, .btn:hover { transform: none; }
  .cutaway-layer { transition: none; }
  .hero-bg .kb-zoom { animation: none; transform: scale(1); }
}

/* ---------- Print (specification PDF) ---------- */

@media print {
  body * { visibility: hidden; }
  #printRoot, #printRoot * { visibility: visible; }
  #printRoot { position: absolute; top: 0; left: 0; width: 100%; padding: 24px; }
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .split, .anatomy-grid, .app-grid { grid-template-columns: 1fr; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .engineering-banner-title { font-size: 1.4rem; }
  .engineering-banner-byline-logo { width: 150px; }
}

@media (max-width: 640px) {
  .capability-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .anatomy-strip { flex-direction: column; }
  .hero { padding: 70px 0 56px; }
  .hero h1 { font-size: 2rem; }
  .engineering-banner-title { font-size: 1.15rem; }
  .engineering-banner-byline-logo { width: 130px; }
}