:root {
  --bg: #f3f2ef;
  --bg-2: #ecebe7;
  --surface: #ffffff;
  --line: #e3e5ea;
  --line-2: #c9ced6;
  --gold: #ea1d28;
  --gold-2: #c41620;
  --steel: #5c6570;
  --text: #1a1d23;
  --muted: #5f6570;
  --danger: #b42318;
  --ok: #067647;
  --shadow: 0 12px 32px rgba(26, 29, 35, 0.08);
  --shadow-hover: 0 16px 36px rgba(26, 29, 35, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1180px;
}

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

html {
  scroll-behavior: auto;
  scroll-padding-top: 5.5rem;
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  isolation: isolate;
}

body::before,
body::after {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -1;
}

body::before {
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"), url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n2'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.12' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0.5 0 0 0 0.5  0.5 0 0 0 0.5  0.55 0 0 0 0.45  0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n2)'/%3E%3C/svg%3E");
  background-size: 180px 180px, 520px 520px;
}

body::after {
  opacity: 0.55;
  background:
    radial-gradient(42vw 32vw at 18% 12%, rgba(255, 255, 255, 0.85), transparent 62%),
    radial-gradient(36vw 28vw at 82% 78%, rgba(234, 29, 40, 0.14), transparent 58%),
    radial-gradient(28vw 22vw at 58% 38%, rgba(255, 248, 236, 0.55), transparent 60%);
  background-repeat: no-repeat;
  animation: light-wash 36s ease-in-out infinite alternate;
}

.ambience {
  pointer-events: none;
  position: fixed;
  inset: -20%;
  z-index: -1;
  overflow: hidden;
}

.ambience span {
  position: absolute;
  border-radius: 50%;
  filter: blur(72px);
  will-change: transform;
  animation: light-drift 28s ease-in-out infinite alternate;
}

.ambience span:nth-child(1) {
  width: min(48vw, 560px);
  height: min(48vw, 560px);
  background: rgba(255, 255, 255, 0.72);
  top: 4%;
  left: 6%;
  animation-duration: 32s;
}

.ambience span:nth-child(2) {
  width: min(40vw, 480px);
  height: min(40vw, 480px);
  background: rgba(234, 29, 40, 0.09);
  right: 4%;
  bottom: 6%;
  animation-duration: 40s;
  animation-delay: -12s;
}

.ambience span:nth-child(3) {
  width: min(32vw, 380px);
  height: min(32vw, 380px);
  background: rgba(255, 250, 240, 0.55);
  top: 42%;
  left: 46%;
  animation-duration: 36s;
  animation-delay: -20s;
}

@keyframes light-drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(7%, -5%, 0) scale(1.08); }
  100% { transform: translate3d(-6%, 6%, 0) scale(0.94); }
}

@keyframes light-wash {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-3%, 2%, 0) scale(1.06); }
}

.wrap {
  width: min(var(--max), calc(100% - 2.4rem));
  margin-inline: auto;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3 {
  font-family: Roboto, system-ui, sans-serif;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.08;
  margin: 0;
  text-transform: uppercase;
}

p {
  margin: 0;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 8px 24px rgba(26, 29, 35, 0.06);
}

.nav-mark {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-logo-img {
  display: block;
  height: 64px;
  width: auto;
  max-width: 90px;
  object-fit: contain;
  background: transparent;
  transition: transform 0.35s var(--ease);
}

.nav-mark:hover .nav-logo-img {
  transform: scale(1.04);
}

.nav-sub {
  color: var(--muted);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-links a:not(.nav-cta) {
  position: relative;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.25s var(--ease);
}

.nav-links a:not(.nav-cta):hover {
  color: var(--text);
}

.nav-links a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-phone {
  color: var(--text) !important;
  font-weight: 500;
}

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gold);
  color: #ffffff;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.72rem 1.15rem;
  border: 0;
  cursor: pointer;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.nav-cta:hover,
.btn:hover {
  background: var(--gold-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(234, 29, 40, 0.28);
}

.nav-cta:active,
.btn:active {
  transform: translateY(0);
}

.btn-block {
  width: 100%;
  margin-top: 0.25rem;
}

.nav-end {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 32px;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 1px;
  background: var(--text);
  margin: 7px 0;
}

.nav-drawer {
  display: none;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem 1.5rem 1.4rem;
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  position: relative;
  z-index: 39;
}

.nav-drawer.is-open {
  display: flex;
}

.hero {
  position: relative;
  width: 100%;
  margin: 0 auto;
  padding: 2.8rem max(1.15rem, calc((100% - var(--max)) / 2 + 1.15rem)) 3.2rem;
}

.frame-corners {
  pointer-events: none;
  position: absolute;
  inset: 0.85rem 0;
  border: 1px solid rgba(234, 29, 40, 0.35);
}

.frame-corners::before,
.frame-corners::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--gold);
}

.frame-corners::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.frame-corners::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

.dwg {
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  margin-bottom: 2.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 2.2rem;
  align-items: start;
}

.hero-visual {
  display: grid;
  gap: 0.85rem;
}

.photo,
.photo-row figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), transform 0.25s var(--ease);
}

.photo:hover,
.photo-row figure:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.photo img,
.photo-row img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: contain;
  object-position: center;
  transition: transform 0.55s var(--ease);
}

.photo:hover img,
.photo-row figure:hover img {
  transform: scale(1.035);
}

.photo-wide {
  margin: 0 0 1.5rem;
}

.photo-wide img {
  max-height: 360px;
}

.photo figcaption,
.photo-row figcaption {
  width: 100%;
  padding: 0.55rem 0.75rem;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.82rem;
  box-sizing: border-box;
}

.photo-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
  align-items: start;
}

.photo-row.thirds {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.photo-row.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.photo-dark {
  background: #000;
}

.photo-dark figcaption {
  background: #111;
  color: #c9c9c9;
}

.photo-row.thirds img {
  max-height: 220px;
}

.kicker {
  color: var(--gold);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  max-width: 22ch;
  margin-bottom: 1.15rem;
}

.lede {
  max-width: 46ch;
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 1.6rem;
}

.spec {
  color: var(--text);
  font-family: Roboto, system-ui, sans-serif;
  font-weight: 500;
}

.primes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  list-style: none;
  padding: 0;
  margin: 0.45rem 0 0;
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.sla {
  margin: 1.15rem 0 0;
  color: var(--gold);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.btn-bounce {
  animation: idle-bounce 2.4s ease-in-out infinite;
}

.btn-bounce:hover,
.btn-bounce:focus-visible {
  animation: none;
}

@keyframes idle-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.spec-panel {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 1.15rem 1.2rem 1.3rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.spec-panel::before {
  content: "";
  pointer-events: none;
  position: absolute;
  top: -30%;
  bottom: -30%;
  left: -80%;
  width: 55%;
  background: linear-gradient(
    105deg,
    transparent 0%,
    rgba(255, 255, 255, 0) 35%,
    rgba(255, 255, 255, 0.55) 48%,
    rgba(255, 255, 255, 0.9) 50%,
    rgba(255, 255, 255, 0.55) 52%,
    rgba(255, 255, 255, 0) 65%,
    transparent 100%
  );
  transform: translateX(0) skewX(-18deg);
  animation: none;
  mix-blend-mode: overlay;
  z-index: 1;
}

.spec-panel.is-shining::before {
  animation: plaque-shine 5.5s ease-in-out infinite;
}

.spec-panel > * {
  position: relative;
  z-index: 2;
}

@keyframes plaque-shine {
  0% { transform: translateX(0) skewX(-18deg); }
  14% { transform: translateX(280%) skewX(-18deg); }
  14.01%, 100% { transform: translateX(0) skewX(-18deg); }
}

.spec-panel:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
}

.spec-panel-head {
  display: flex;
  justify-content: space-between;
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  margin-bottom: 0.6rem;
}

.spec-readout {
  font-family: Roboto, system-ui, sans-serif;
  font-size: clamp(3.4rem, 6vw, 4.6rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 0.9;
  color: var(--gold-2);
  animation: readout-in 0.8s var(--ease) 0.15s both;
}

.spec-readout span {
  font-size: 0.45em;
  margin-left: 0.08em;
}

.spec-caption {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.55rem 0 1.1rem;
}

.spec-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.spec-list div {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 0.6rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}

.spec-list dt {
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.spec-list dd {
  margin: 0;
}

.badges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 2.4rem 0 0;
}

.badges li {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.95rem 0.95rem 1rem;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.badges li:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
}

.badge-code {
  display: block;
  color: var(--gold);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  margin-bottom: 0.45rem;
}

.badges strong {
  display: block;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badges em {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-style: normal;
  font-size: 0.82rem;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.2rem 1.5rem;
}

#rfq {
  padding-top: 2.4rem;
}

.section-alt {
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(var(--bg-2), var(--bg-2)) border-box;
  max-width: none;
  padding-left: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
  padding-right: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stage-hero,
.stage-shop,
.stage-apache,
.stage-alloy,
.stage-cta,
.stage-viewer,
.stage-engine,
.stage-foot {
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.stage-shop,
.stage-apache,
.stage-alloy,
.stage-cta,
.stage-viewer,
.stage-engine {
  max-width: none;
  padding-left: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
  padding-right: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
}

.stage-hero {
  background-image:
    linear-gradient(180deg, rgba(243, 242, 239, 0.84) 0%, rgba(243, 242, 239, 0.9) 100%),
    url("images/shop-7371.jpg");
}

#capabilities.stage-shop,
.stage-shop {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  overflow: hidden;
  background-color: #e4e9ee;
  background-image: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stage-shop::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -12%;
  bottom: -12%;
  left: 50%;
  width: 120vw;
  transform: translateX(-50%);
  background-image: url("images/parts-metal.png");
  background-size: cover;
  background-position: center;
  filter: blur(14px);
}

.stage-shop::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(228, 233, 238, 0.72) 0%, rgba(236, 235, 231, 0.8) 100%);
}

.hero.stage-hero {
  padding-bottom: 4.4rem;
}

.stage-apache {
  background-color: #121418;
  background-image:
    linear-gradient(180deg, rgba(18, 20, 24, 0.52) 0%, rgba(18, 20, 24, 0.7) 48%, rgba(18, 20, 24, 0.94) 82%, #121418 100%),
    url("images/bg-dfm.jpg");
  background-size: cover;
  background-position: center 28%;
  border-top: 0;
  border-bottom: 0;
  padding-top: 5.2rem;
  padding-bottom: 7.2rem;
}

#dfm .kicker {
  color: #fff;
}

.stage-splice {
  position: relative;
  z-index: 6;
  height: clamp(4.4rem, 7.5vw, 6.4rem);
  margin-top: -2.2rem;
  margin-bottom: -2.4rem;
  pointer-events: none;
  overflow: hidden;
}

.stage-splice-shape {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.stage-splice-shape polygon {
  fill: #121418;
}

.stage-splice.is-light .stage-splice-shape polygon {
  fill: #f3f2ef;
}

.stage-splice-shape polyline {
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
}

.stage-splice-shape polyline.is-ghost {
  stroke: rgba(255, 255, 255, 0.28);
  stroke-width: 1;
}

.stage-splice.is-light .stage-splice-shape polyline.is-ghost {
  stroke: rgba(26, 29, 35, 0.16);
}

.stage-splice-hatch {
  position: absolute;
  left: -8%;
  right: -8%;
  top: 58%;
  height: 14px;
  transform: rotate(1.1deg);
  background:
    repeating-linear-gradient(
      -32deg,
      transparent 0 7px,
      rgba(234, 29, 40, 0.42) 7px 8px
    );
  mask-image: linear-gradient(90deg, transparent 0%, #000 12%, #000 88%, transparent 100%);
  opacity: 0.5;
}

.stage-splice::before,
.stage-splice::after {
  content: "";
  position: absolute;
  z-index: 2;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
}

.stage-splice::before {
  left: max(1.2rem, calc((100% - var(--max)) / 2 + 0.4rem));
  top: 1.05rem;
  border-right: 0;
  border-bottom: 0;
}

.stage-splice::after {
  right: max(1.2rem, calc((100% - var(--max)) / 2 + 0.4rem));
  bottom: 0.35rem;
  border-left: 0;
  border-top: 0;
}

.stage-splice-code,
.stage-splice-mid {
  position: absolute;
  z-index: 3;
  color: rgba(244, 241, 236, 0.72);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.stage-splice-code {
  left: max(2.6rem, calc((100% - var(--max)) / 2 + 1.8rem));
  top: 1.2rem;
  color: var(--gold);
}

.stage-splice-code.is-next {
  left: auto;
  right: max(2.6rem, calc((100% - var(--max)) / 2 + 1.8rem));
  top: auto;
  bottom: 0.55rem;
  color: var(--gold-2);
}

.stage-splice-mid {
  left: 50%;
  top: 62%;
  transform: translate(-50%, -50%) rotate(1.1deg);
  color: rgba(26, 29, 35, 0.45);
  background: rgba(243, 242, 239, 0.82);
  padding: 0.12rem 0.45rem;
}

.stage-weld {
  position: relative;
  z-index: 6;
  height: 2.2rem;
  margin-top: -1.1rem;
  margin-bottom: -1.1rem;
  pointer-events: none;
  overflow: hidden;
}

.stage-weld-plates {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.stage-shop {
  padding-top: 4.8rem;
  padding-bottom: 4.6rem;
}

.stage-alloy {
  background-image:
    linear-gradient(180deg, rgba(243, 242, 239, 0.9) 0%, rgba(243, 242, 239, 0.94) 100%),
    url("images/parts-plastics.png");
  padding-top: 5.2rem;
}

.stage-cta {
  background-image:
    linear-gradient(118deg, rgba(196, 22, 32, 0.9) 0%, rgba(26, 29, 35, 0.88) 100%),
    url("images/shop-9954.jpg");
  padding-bottom: 4.6rem;
}

.stage-mesh {
  position: relative;
  z-index: 6;
  height: clamp(5.8rem, 10vw, 8.4rem);
  margin-top: -1.6rem;
  margin-bottom: -3.2rem;
  pointer-events: none;
  overflow: hidden;
  color: var(--gold);
}

.stage-mesh-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.stage-mesh-tris {
  position: absolute;
  left: -4%;
  right: -4%;
  top: 28%;
  height: 58%;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='36' height='32' viewBox='0 0 36 32'%3E%3Cpath d='M0 32 L18 2 L36 32' fill='none' stroke='%23ea1d28' stroke-width='1'/%3E%3Ccircle cx='18' cy='2' r='1.4' fill='%23ea1d28'/%3E%3Ccircle cx='0' cy='32' r='1.1' fill='%239aa3ad'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 36px 32px;
  opacity: 0.55;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.35) 70%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.35) 70%, transparent 100%);
}

.stage-mesh-scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #ea1d28 18%, #fff 50%, #ea1d28 82%, transparent);
  opacity: 0.7;
  animation: mesh-scan 5.5s var(--ease) infinite;
}

.stage-mesh-cad {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 0.35rem;
  width: min(168px, 38vw);
  height: auto;
  transform: translateX(-50%);
  overflow: visible;
}

.stage-mesh-cad text {
  font-family: Roboto, system-ui, sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.stage-mesh-code {
  position: absolute;
  z-index: 3;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #ffd6d8;
}

.stage-mesh-code:not(.is-next) {
  left: max(1.4rem, calc((100% - var(--max)) / 2 + 0.6rem));
  top: 0.7rem;
}

.stage-mesh-code.is-next {
  right: max(1.4rem, calc((100% - var(--max)) / 2 + 0.6rem));
  bottom: 0.85rem;
  color: var(--gold-2);
}

@keyframes mesh-scan {
  0% { transform: translateY(0); opacity: 0; }
  12% { opacity: 0.8; }
  88% { opacity: 0.55; }
  100% { transform: translateY(6.8rem); opacity: 0; }
}

.stage-viewer {
  position: relative;
  isolation: isolate;
  background-image:
    linear-gradient(180deg, rgba(232, 234, 238, 0.88) 0%, rgba(236, 235, 231, 0.96) 42%, rgba(236, 235, 231, 0.97) 100%),
    url("images/parts-assembly.png");
  border-top: 0;
  padding-top: 5.6rem;
}

.stage-viewer::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -6%;
  width: 170%;
  height: min(46vh, 24rem);
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(26, 29, 35, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 29, 35, 0.1) 1px, transparent 1px);
  background-size: 32px 32px;
  transform: translateX(-50%) perspective(560px) rotateX(64deg);
  transform-origin: center top;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9) 0%, transparent 86%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9) 0%, transparent 86%);
}

.stage-viewer::after {
  content: "";
  position: absolute;
  z-index: 0;
  pointer-events: none;
  left: 8%;
  right: 8%;
  top: 0.15rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(234, 29, 40, 0.5), transparent);
}

.stage-viewer .section-head-wide::before,
.stage-viewer .section-head-wide::after {
  content: "";
  position: absolute;
  z-index: 1;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(234, 29, 40, 0.55);
}

.stage-viewer .section-head-wide::before {
  top: -0.35rem;
  left: 0;
  border-right: 0;
  border-bottom: 0;
}

.stage-viewer .section-head-wide::after {
  top: -0.35rem;
  right: 0;
  border-left: 0;
  border-bottom: 0;
}

.stage-viewer .section-head,
.stage-viewer .viewer-shell {
  position: relative;
  z-index: 1;
}

.stage-engine {
  background-color: #101216;
  background-image:
    linear-gradient(180deg, rgba(16, 18, 22, 0.55) 0%, rgba(16, 18, 22, 0.78) 52%, rgba(16, 18, 22, 0.95) 84%, #101216 100%),
    url("images/bg-experience.jpg");
  background-size: cover;
  background-position: center 42%;
}

.stage-record {
  max-width: none;
  padding-left: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
  padding-right: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
  background: var(--bg);
}

.client-band {
  margin-top: 2rem;
  padding: 1.35rem 1.2rem 1.15rem;
  background: #fff;
  border: 1px solid var(--line);
}

.client-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 1.15rem 1.35rem;
  align-items: center;
  justify-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.client-logos li {
  width: 100%;
  height: 3.4rem;
  display: grid;
  place-items: center;
}

.client-logos img {
  display: block;
  max-width: 100%;
  max-height: 3.2rem;
  width: auto;
  height: auto;
  object-fit: contain;
}

.stage-foot {
  background-image:
    linear-gradient(180deg, rgba(16, 18, 22, 0.94) 0%, rgba(12, 13, 16, 0.97) 100%),
    url("images/manifold-project.png");
  border-top: 0;
}

.stage-dark,
.stage-cta,
.stage-foot {
  color: #f4f1ec;
}

.stage-dark .section-lede,
.stage-dark .prose p,
.stage-cta .section-lede,
.stage-cta .rfq-meta {
  color: rgba(244, 241, 236, 0.78);
}

.stage-cta .kicker {
  color: #fff;
}

.stage-cta .call-line,
.stage-foot .call-line {
  color: #fff;
}

.stage-cta .call-phone,
.stage-foot .call-phone {
  color: #fff;
}

.stage-cta .call-phone:hover,
.stage-foot .call-phone:hover {
  color: #ffd6d8;
}

.stage-cta .rfq-meta li {
  border-bottom-color: rgba(255, 255, 255, 0.18);
}

.stage-dark .case-callout,
.stage-dark .bio-card {
  background: rgba(255, 255, 255, 0.96);
  color: var(--text);
}

.stage-dark .case-callout p,
.stage-dark .bio-card p {
  color: var(--muted);
}

.stage-shop .cap,
.stage-alloy .table-wrap,
.stage-viewer .part-panel,
.stage-viewer .ghost-btn,
.stage-viewer .model-pick select {
  background: rgba(255, 255, 255, 0.94);
}

.stage-foot .foot-grid a {
  color: #fff;
}

.stage-foot .foot-grid a:hover {
  color: #ffd6d8;
}

.stage-foot .foot-grid p,
.stage-foot .foot-mark span,
.stage-foot .foot-certs,
.stage-foot .foot-copy {
  color: rgba(244, 241, 236, 0.62);
}

.stage-foot .foot-logo {
  background: #fff;
  padding: 0.35rem 0.45rem;
}

.section-head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.section-head-wide {
  max-width: 54rem;
}

.section-head-wide .section-lede {
  max-width: 68ch;
}

h2 {
  font-size: clamp(2rem, 4.4vw, 3.15rem);
  margin-bottom: 0.85rem;
}

.section-lede {
  color: var(--muted);
  max-width: 52ch;
}

.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.cap {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 1.4rem 1.3rem 1.5rem;
  min-height: 11.5rem;
  overflow: hidden;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.cap::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 0;
  background: var(--gold);
  transition: height 0.3s var(--ease);
}

.cap:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.cap:hover::after {
  height: 100%;
}

.cap-num {
  display: block;
  color: var(--gold);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  margin-bottom: 1.1rem;
}

.cap h3 {
  font-size: 1.45rem;
  max-width: 16ch;
  margin-bottom: 0.7rem;
}

.cap p {
  color: var(--muted);
  max-width: 42ch;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--surface);
}

.matrix {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.matrix th,
.matrix td {
  text-align: left;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.matrix th {
  background: var(--bg-2);
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.matrix tbody tr:last-child td {
  border-bottom: 0;
}

.matrix tbody tr td {
  transition: background 0.2s var(--ease);
}

.matrix tbody tr:hover td {
  background: rgba(234, 29, 40, 0.07);
}

.matrix td:first-child {
  width: 24%;
}

.rfq-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.4rem;
  align-items: start;
}

.rfq-meta {
  list-style: none;
  padding: 0;
  margin: 1.4rem 0 0;
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.78rem;
}

.call-line {
  margin: 1.1rem 0 0.35rem;
  color: var(--text);
  font-weight: 500;
}

.call-phone {
  display: inline-block;
  color: var(--gold);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: color 0.2s var(--ease), letter-spacing 0.25s var(--ease);
}

.call-phone:hover {
  color: var(--gold-2);
  letter-spacing: 0.08em;
}

.rfq-meta li {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

.rfq-form {
  display: grid;
  gap: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 1.2rem;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.rfq-form:focus-within {
  border-color: var(--line-2);
  box-shadow: var(--shadow);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

label {
  display: grid;
  gap: 0.35rem;
  color: var(--steel);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

input,
textarea,
select {
  width: 100%;
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--line);
  padding: 0.72rem 0.75rem;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  text-transform: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%231a1d23' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
  cursor: pointer;
}

input:focus,
textarea:focus,
select:focus {
  outline: 1px solid var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(234, 29, 40, 0.12);
}

.file-drop {
  position: relative;
  min-height: 6.2rem;
  place-items: center;
  text-align: center;
  border: 1px dashed var(--line-2);
  background: #ffffff;
  padding: 1.2rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease);
}

.file-drop:hover {
  border-color: var(--gold);
  background: #fdf4f5;
}

.file-drop input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-drop-title {
  color: var(--text);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 1.05rem;
  letter-spacing: 0.1em;
}

.file-drop-sub {
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0.02em;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.85rem;
}

.file-drop.is-hot {
  border-color: var(--gold);
  background: #fdf4f5;
  transform: scale(1.01);
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  text-transform: none;
  letter-spacing: 0.02em;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.86rem;
  color: var(--muted);
}

.check input {
  width: auto;
  margin-top: 0.2rem;
}

.form-status {
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.9rem;
  text-transform: none;
  letter-spacing: 0;
}

.form-status.ok {
  color: var(--ok);
}

.form-status.err {
  color: var(--danger);
}

main {
  position: relative;
  z-index: 1;
}

.foot {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  padding: 2rem 1.5rem 2rem;
  text-align: left;
}

.foot-grid {
  width: min(var(--max), calc(100% - 0rem));
  margin: 0 auto 1.4rem;
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr 1.15fr 1fr;
  gap: 1.4rem;
  align-items: start;
}

.foot-grid a {
  display: block;
  color: var(--text);
  font-size: 0.92rem;
  margin-top: 0.35rem;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.foot-grid a:hover {
  color: var(--gold);
  transform: translateX(3px);
}

.foot-grid p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.45rem;
}

.foot-mark {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}

.foot-mark .call-line {
  margin-top: 0.85rem;
}

.foot-certs,
.foot-copy {
  text-align: center;
}

.foot-cta {
  display: flex;
  justify-content: center;
  margin: 0.2rem auto 1.35rem;
}

.foot-logo {
  display: block;
  flex: 0 0 auto;
  align-self: flex-start;
  height: 88px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  object-position: left top;
  background: transparent;
  margin-bottom: 0.5rem;
}

.foot-mark span,
.foot-certs,
.foot-copy {
  color: var(--muted);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.foot-copy {
  margin-top: 0.7rem;
}

.exp-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.exp-split .prose {
  max-width: none;
  margin-bottom: 0;
}

.exp-split .bio-card {
  max-width: none;
  text-align: center;
  transform: translateY(-10px);
}

.exp-split .bio-card:hover {
  transform: translateY(-13px);
}

.prose {
  max-width: 62ch;
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.prose p {
  color: var(--muted);
  font-size: 1.02rem;
}

.case-callout,
.bio-card {
  max-width: 62ch;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 1.2rem 1.25rem 1.3rem;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.case-callout:hover,
.bio-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
}

.case-callout p,
.bio-card p {
  color: var(--muted);
  margin-top: 0.55rem;
}

.dfm-stage .kicker,
.dfm-stage h2,
.dfm-stage .section-lede,
.dfm-stage .prose p,
.dfm-stage .case-callout,
.dfm-stage .photo-row figure {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(4px);
  transition:
    opacity 0.85s var(--ease),
    transform 0.85s var(--ease),
    filter 0.85s var(--ease),
    box-shadow 0.25s var(--ease),
    border-color 0.25s var(--ease);
}

.dfm-stage h2 {
  transform: translateY(32px);
}

.dfm-stage.is-live .kicker,
.dfm-stage.is-live h2,
.dfm-stage.is-live .section-lede,
.dfm-stage.is-live .prose p,
.dfm-stage.is-live .case-callout,
.dfm-stage.is-live .photo-row figure {
  opacity: 1;
  transform: none;
  filter: none;
}

.dfm-stage.is-live .kicker { transition-delay: 0ms; }
.dfm-stage.is-live h2 { transition-delay: 90ms; }
.dfm-stage.is-live .section-lede { transition-delay: 180ms; }
.dfm-stage.is-live .prose p:nth-child(1) { transition-delay: 260ms; }
.dfm-stage.is-live .prose p:nth-child(2) { transition-delay: 360ms; }
.dfm-stage.is-live .case-callout { transition-delay: 460ms; }
.dfm-stage.is-live .photo-row figure:nth-child(1) { transition-delay: 540ms; }
.dfm-stage.is-live .photo-row figure:nth-child(2) { transition-delay: 640ms; }
.dfm-stage.is-live .photo-row figure:nth-child(3) { transition-delay: 740ms; }

.dfm-stage h2::after {
  content: "";
  display: block;
  width: 0;
  height: 2px;
  margin-top: 0.65rem;
  background: var(--gold);
  transition: width 0.9s var(--ease) 0.2s;
}

.dfm-stage.is-live h2::after {
  width: 4.5rem;
}

.dfm-stage .photo-row figure {
  overflow: hidden;
}

.dfm-stage .photo-row img {
  transform: translate3d(0, var(--par, 0px), 0) scale(1.08);
  will-change: transform;
}

.dfm-stage .photo-row figure:hover img {
  transform: translate3d(0, var(--par, 0px), 0) scale(1.12);
}

.site-ladder {
  position: fixed;
  right: 1.15rem;
  top: 6.2rem;
  bottom: calc(1.15rem + 2.75rem + 0.85rem);
  left: auto;
  transform: none;
  z-index: 42;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  width: 2.75rem;
  padding: 0;
}

.site-ladder::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 0.31rem;
  transform: translateX(-50%);
  background: var(--line-2);
}

.site-ladder a {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  text-decoration: none;
  color: var(--steel);
}

.site-ladder i {
  display: block;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line-2);
  background: var(--surface);
  box-shadow: var(--shadow-hover);
  flex-shrink: 0;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.site-ladder a:hover i {
  transform: translateY(-3px);
  border-color: var(--gold);
}

.site-ladder span {
  position: absolute;
  right: calc(100% + 0.55rem);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
  pointer-events: none;
}

.site-ladder a:hover span,
.site-ladder a.is-on span,
.site-ladder a[data-rung="rfq"] span {
  opacity: 1;
  transform: none;
}

.site-ladder a[data-rung="rfq"] span {
  pointer-events: auto;
  color: var(--gold);
  padding: 0.2rem 0.1rem;
}

.site-ladder a[data-rung="rfq"]:hover span,
.site-ladder a[data-rung="rfq"].is-on span {
  color: var(--gold-2);
}

.site-ladder a.is-on {
  color: var(--gold);
}

.site-ladder a.is-on i {
  background: var(--gold);
  border-color: var(--gold);
}

.site-ladder a.is-on:hover i {
  background: var(--gold-2);
  border-color: var(--gold-2);
}

.bio-card h3 {
  font-size: 1.6rem;
  text-transform: none;
  letter-spacing: 0.02em;
}

.bio-card a {
  color: var(--gold);
}

.bio-card a:hover {
  color: var(--gold-2);
}

.viewer-shell {
  display: grid;
  gap: 0.9rem;
}

.viewer-tools {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}

.model-pick {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: min(100%, 16.5rem);
}

.model-pick span {
  color: var(--steel);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.model-pick select {
  flex: 1;
  min-width: 0;
  appearance: none;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%231a1d23' d='M1 1l5 5 5-5'/%3E%3C/svg%3E") no-repeat right 0.7rem center;
  border: 1px solid var(--line-2);
  color: var(--text);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 2rem 0.55rem 0.75rem;
  cursor: pointer;
}

.model-pick select:hover,
.model-pick select:focus {
  border-color: var(--gold);
  outline: none;
}

.ghost-btn {
  background: #fff;
  border: 1px solid var(--line-2);
  color: var(--text);
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.ghost-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.viewer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.viewer-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 0.85rem;
  align-items: stretch;
}

.viewer-stage {
  position: relative;
  height: min(72vh, 640px);
  min-height: 420px;
  border: 1px solid rgba(26, 29, 35, 0.08);
  background: transparent;
  overflow: hidden;
}

#viewerCanvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  background: transparent;
  touch-action: none;
  cursor: grab;
}

#viewerCanvas:active {
  cursor: grabbing;
}

.viewer-status {
  position: absolute;
  left: 0.85rem;
  bottom: 0.75rem;
  color: var(--steel);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  pointer-events: none;
}

.part-panel {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  padding: 0.9rem 0.75rem;
  overflow: auto;
  max-height: min(72vh, 640px);
}

.part-list {
  display: grid;
  gap: 0.15rem;
  margin-top: 0.5rem;
}

.part-row {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  padding: 0.32rem 0.35rem;
  cursor: pointer;
  font-family: Roboto, system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.part-row em {
  font-style: normal;
  color: var(--steel);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.part-row.is-active {
  border-color: var(--gold);
  color: var(--gold);
}

.part-row.is-off {
  opacity: 0.42;
}

.part-row.is-off em {
  color: var(--gold);
}

@media (max-width: 900px) {
  html {
    scroll-padding-top: 4.6rem;
  }

  .nav-links {
    display: none;
  }

  .site-ladder {
    right: max(0.85rem, env(safe-area-inset-right));
    left: auto;
    top: 5.4rem;
    width: 2.9rem;
    bottom: calc(max(0.85rem, env(safe-area-inset-bottom)) + 2.9rem + 0.75rem);
  }

  .site-ladder a,
  .site-ladder i {
    width: 2.9rem;
    height: 2.9rem;
  }

  .site-ladder span {
    display: none;
  }

  .site-ladder a[data-rung="rfq"] span {
    display: block;
  }

  .nav {
    padding: 0.55rem 0;
  }

  .nav-logo-img {
    height: 52px;
    max-width: 72px;
  }

  .nav-toggle {
    display: block;
    width: 44px;
    height: 44px;
  }

  .nav-drawer {
    gap: 0.15rem;
    padding: 0.4rem 1rem 1rem;
  }

  .nav-drawer a {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding: 0.35rem 0.2rem;
    font-size: 0.82rem;
  }

  .nav-drawer .nav-cta {
    justify-content: center;
    margin-top: 0.5rem;
    min-height: 48px;
  }

  .hero {
    padding: 1.4rem 1rem 2rem;
  }

  .hero-grid,
  .cap-grid,
  .rfq-grid,
  .field-row,
  .badges,
  .foot-grid,
  .photo-row,
  .photo-row.thirds,
  .photo-row.two,
  .exp-split,
  .viewer-body {
    grid-template-columns: 1fr;
  }

  .viewer-stage {
    height: min(62vh, 520px);
    min-height: 360px;
  }

  .part-panel {
    max-height: 240px;
  }

  .frame-corners,
  .dwg {
    display: none;
  }

  h1 {
    max-width: none;
    font-size: clamp(1.85rem, 8.4vw, 2.6rem);
  }

  h2 {
    font-size: clamp(1.55rem, 7vw, 2.2rem);
  }

  .lede,
  .section-lede,
  .prose p {
    font-size: 0.98rem;
  }

  .spec-readout {
    font-size: clamp(2.4rem, 12vw, 3.2rem);
  }

  .spec-list div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
    padding: 0.55rem 0;
  }

  .section {
    padding: 2.4rem 1rem;
  }

  #rfq {
    padding-top: 1.6rem;
  }

  .section-alt,
  .stage-shop,
  .stage-apache,
  .stage-alloy,
  .stage-cta,
  .stage-viewer,
  .stage-engine,
  .stage-record {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .stage-apache {
    padding-top: 3.6rem;
    padding-bottom: 5.4rem;
  }

  .stage-alloy {
    padding-top: 3.4rem;
  }

  .stage-shop {
    padding-top: 3.4rem;
    padding-bottom: 3.2rem;
  }

  .stage-splice,
  .stage-mesh {
    height: 4.2rem;
    margin-top: -1rem;
    margin-bottom: -1.4rem;
  }

  .stage-splice-mid,
  .stage-mesh-cad {
    display: none;
  }

  .stage-viewer {
    padding-top: 3.8rem;
  }

  .cap {
    min-height: 0;
    padding: 1.1rem 1rem 1.2rem;
  }

  .cap h3 {
    max-width: none;
    font-size: 1.2rem;
  }

  .nav-cta {
    width: auto;
    min-height: 40px;
    padding: 0.45rem 0.7rem;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }

  .hero .btn,
  .rfq-form .btn,
  .nav-drawer .nav-cta {
    min-height: 48px;
    width: 100%;
  }

  .call-phone {
    font-size: 1.2rem;
    word-break: break-word;
  }

  .photo img,
  .photo-row img,
  .photo-wide img {
    max-height: 260px;
  }

  .photo-row.thirds img {
    max-height: 200px;
  }

  .exp-split .bio-card {
    transform: none;
    text-align: left;
  }

  .exp-split .bio-card:hover {
    transform: translateY(-3px);
  }

  .to-top {
    right: max(0.85rem, env(safe-area-inset-right));
    bottom: max(0.85rem, env(safe-area-inset-bottom));
    width: 2.9rem;
    height: 2.9rem;
  }

  .ambience span {
    filter: blur(48px);
  }

  .nav-inner {
    width: min(var(--max), calc(100% - 1.4rem));
  }

  .foot {
    padding: 1.4rem 1rem 5.5rem;
  }

  .matrix {
    min-width: 0;
  }

  .matrix thead {
    display: none;
  }

  .matrix,
  .matrix tbody,
  .matrix tr,
  .matrix td {
    display: block;
    width: 100%;
  }

  .matrix tr {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .matrix td {
    padding: 0.25rem 1rem;
    border: 0;
  }

  .matrix td::before {
    content: attr(data-label);
    display: block;
    color: var(--steel);
    font-family: Roboto, system-ui, sans-serif;
    font-size: 0.64rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.15rem;
  }
}

.reveal-hold,
.reveal-hold.reveal,
.dfm-stage.reveal-hold .kicker,
.dfm-stage.reveal-hold h2,
.dfm-stage.reveal-hold .section-lede,
.dfm-stage.reveal-hold .prose p,
.dfm-stage.reveal-hold .case-callout,
.dfm-stage.reveal-hold .photo-row figure {
  transition: none !important;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--ease) var(--delay, 0ms),
    transform 0.7s var(--ease) var(--delay, 0ms);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

.to-top {
  position: fixed;
  right: 1.15rem;
  bottom: 1.15rem;
  z-index: 45;
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  background: var(--gold);
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  box-shadow: var(--shadow-hover);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.to-top:hover {
  background: var(--gold-2);
  transform: translateY(-3px);
}

@keyframes readout-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .dfm-stage .kicker,
  .dfm-stage h2,
  .dfm-stage .section-lede,
  .dfm-stage .prose p,
  .dfm-stage .case-callout,
  .dfm-stage .photo-row figure {
    opacity: 1;
    transform: none;
    filter: none;
  }

  .dfm-stage h2::after {
    width: 4.5rem;
  }

  .photo:hover img,
  .photo-row figure:hover img,
  .nav-mark:hover .nav-logo-img,
  .cap:hover,
  .badges li:hover,
  .btn:hover,
  .nav-cta:hover,
  .to-top:hover {
    transform: none;
  }
}