:root {
  --ink: #061016;
  --deep: #03090D;
  --paper: #F1F3F2;
  --steel: #CBD2D4;
  --line: #AAB2B4;
  --blue: #305A99;
  --green: #4E9D71;
  --nav-h: 82px;
  --ribbon-h: 0px;
  --hero-p: 0;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--ink);
  color: #fff;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  overflow-x: hidden;
}
body.tour-running { cursor: none; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  height: var(--nav-h);
  padding: 0 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(3,9,13,.94);
  border-bottom: 1px solid rgba(203,210,212,.25);
  z-index: 100;
}
.site-nav img { width: 230px; height: auto; display: block; filter: url(#header-logo-white); }
.brand-filter-defs { position: absolute; width: 0; height: 0; overflow: hidden; pointer-events: none; }
.site-links { display: flex; align-items: center; gap: 28px; font-size: clamp(13px, .78vw, 15px); font-weight: 600; letter-spacing: -.025em; }
.site-links a { padding: 14px 0; color: var(--steel); }
.site-links a:hover, .site-links a:focus-visible, .site-links a.active { color: var(--green); }
.site-links .tour-control {
  position: static;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--steel);
  font-size: inherit;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: color .2s ease, opacity .2s ease;
}
.site-links .tour-control::before { content: '▶'; margin-right: 8px; color: var(--green); font-size: 9px; }
.site-links .tour-control:hover, .site-links .tour-control:focus-visible { color: #fff; }
.site-links .tour-control:focus-visible { outline: 1px solid var(--green); outline-offset: 5px; }
.site-links .quote-link { padding: 17px 22px; color: #fff; background: var(--blue); }
.site-links .quote-link:hover, .site-links .quote-link:focus-visible { color: #fff; background: #3D6CB2; }

.scroll-meter {
  position: fixed;
  top: calc(var(--nav-h) + var(--ribbon-h));
  right: 0;
  width: 5px;
  height: calc(100vh - var(--nav-h) - var(--ribbon-h));
  background: rgba(203,210,212,.18);
  z-index: 110;
}
.scroll-meter span { display: block; width: 100%; height: 0; background: var(--green); }

#coil-canvas {
  position: fixed;
  top: calc(var(--nav-h) + var(--ribbon-h));
  left: 0;
  width: 100vw;
  height: calc(100vh - var(--nav-h) - var(--ribbon-h));
  pointer-events: none;
  z-index: 2;
  opacity: 1;
  filter: drop-shadow(0 30px 34px rgba(0, 0, 0, .42));
  transition: opacity .3s ease;
}
.no-webgl #coil-canvas { display: none; }
.qa-materials .hero-scroll { display: none; }
.qa-processing .hero-scroll, .qa-processing .materials-section { display: none; }
.qa-applications .hero-scroll, .qa-applications .materials-section, .qa-applications .processing-scroll { display: none; }
.qa-rfq .hero-scroll,
.qa-rfq .materials-section,
.qa-rfq .processing-scroll,
.qa-rfq .applications-section { display: none; }

.page-section { position: relative; }
.section-shell { width: min(1440px, calc(100% - 96px)); margin: 0 auto; }
.section-kicker {
  color: var(--green);
  font: 700 12px/1.2 Menlo, Consolas, monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.section-title {
  margin: 18px 0 0;
  max-width: 1040px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(48px, 3.65vw, 70px);
  font-weight: 800;
  font-stretch: normal;
  line-height: 1.02;
  letter-spacing: -.032em;
}
.section-intro { max-width: 680px; color: #5D666A; font-size: clamp(17px, 1.05vw, 20px); line-height: 1.42; }

.hero-scroll {
  min-height: 220vh;
  background:
    radial-gradient(circle at 70% 42%, rgba(48,90,153,.26), rgba(48,90,153,0) 38%),
    repeating-linear-gradient(90deg, rgba(203,210,212,.045) 0, rgba(203,210,212,.045) 1px, rgba(203,210,212,0) 1px, rgba(203,210,212,0) 112px),
    var(--ink);
}
.hero-sticky {
  position: sticky;
  top: calc(var(--nav-h) + var(--ribbon-h));
  height: calc(100vh - var(--nav-h) - var(--ribbon-h));
  overflow: hidden;
}
.hero-sticky::after {
  content: 'COLD-ROLLED';
  position: absolute;
  left: 38px;
  bottom: -58px;
  color: rgba(203,210,212,.08);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14vw;
  line-height: .8;
  font-weight: 900;
  letter-spacing: -.05em;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 4;
  width: min(1440px, calc(100% - 96px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.hero-copy { width: 52%; transform: translateY(calc(var(--hero-p) * -110px)); opacity: calc(1 - var(--hero-p) * 1.5); }
.hero-eyebrow { color: var(--green); font: 700 12px Menlo, Consolas, monospace; letter-spacing: .15em; }
.hero-copy h1 {
  margin: 24px 0 28px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  max-width: 850px;
  font-size: clamp(70px, 4.45vw, 88px);
  font-weight: 700;
  font-stretch: normal;
  line-height: .92;
  letter-spacing: -.026em;
}
.hero-copy h1 span { display: block; width: max-content; max-width: 100%; white-space: nowrap; }
.hero-line-bridge {
  margin: .14em 0 .1em .04em;
  color: var(--steel);
  font-size: .72em;
  font-weight: 500;
  letter-spacing: -.012em;
}
.hero-copy p { max-width: 590px; margin: 0; color: var(--steel); font-size: clamp(17px, 1vw, 19px); line-height: 1.42; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; }
.button-primary, .button-secondary {
  display: inline-flex;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid rgba(203,210,212,.36);
  font-size: 14px;
  font-weight: 800;
}
.button-primary { background: var(--blue); border-color: var(--blue); }
.button-secondary { background: rgba(3,9,13,.45); }
.scroll-cue { position: absolute; left: 48px; bottom: 36px; color: var(--steel); font: 700 11px Menlo, Consolas, monospace; letter-spacing: .12em; }

.spec-layer {
  position: absolute;
  inset: 0;
  z-index: 5;
  opacity: clamp(0, calc((var(--hero-p) - .28) * 2.4), 1);
  transform: translateY(calc((1 - var(--hero-p)) * 72px));
  pointer-events: none;
}
.spec-layer h2 {
  position: absolute;
  top: 70px;
  left: 6vw;
  width: 520px;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(44px, 4.35vw, 72px);
  font-weight: 800;
  font-stretch: normal;
  line-height: .98;
  letter-spacing: -.035em;
}
.spec-node {
  position: absolute;
  width: 270px;
  padding: 18px 20px;
  background: rgba(3,9,13,.76);
  border-top: 2px solid var(--green);
  border-bottom: 1px solid rgba(203,210,212,.32);
}
.spec-node small { color: var(--green); font: 700 11px Menlo, Consolas, monospace; letter-spacing: .1em; }
.spec-node strong { display: block; margin-top: 10px; font-size: 18px; }
.spec-a { left: 7vw; top: 48%; }
.spec-b { left: 11vw; top: 70%; }
.spec-c { right: 7vw; top: 31%; }
.spec-d { right: 9vw; top: 68%; }

.materials-section {
  min-height: 0;
  padding: 150px 0 84px;
  background: var(--paper);
  color: var(--deep);
  z-index: 30;
}
.finder {
  margin-top: 66px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) minmax(220px, .92fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.finder label { min-height: 112px; padding: 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.finder span { display: block; margin-bottom: 14px; color: #596267; font: 700 11px Menlo, Consolas, monospace; letter-spacing: .1em; }
.finder select { width: 100%; border: 0; background: transparent; color: var(--deep); font-size: 16px; font-weight: 700; outline: none; }
.finder .find-button { border: 0; min-height: 112px; background: var(--green); color: var(--deep); font-weight: 900; cursor: pointer; }
.product-list { margin-top: 88px; border-top: 1px solid var(--line); }
.product-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 360px;
  border-bottom: 1px solid var(--line);
}
.product-row:nth-child(even) { grid-template-columns: 1fr 1fr; }
.product-row:nth-child(even) .product-copy { order: 2; }
.product-copy { padding: 46px; display: flex; flex-direction: column; justify-content: center; }
.product-copy .num { color: var(--green); font: 700 12px Menlo, Consolas, monospace; }
.product-copy h3 { margin: 20px 0 14px; font-size: clamp(36px, 2.3vw, 44px); line-height: 1.03; letter-spacing: -.015em; }
.product-copy p { margin: 0; max-width: 480px; color: #5D666A; font-size: 17px; line-height: 1.55; }
.product-copy a { display: inline-flex; margin-top: 26px; color: var(--blue); font-weight: 900; }
.product-media { overflow: hidden; background: var(--ink); }
.product-media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.78) contrast(1.05); transition: transform .7s cubic-bezier(.2,.8,.2,1); }
.product-row:hover img { transform: scale(1.035); }

.processing-scroll { min-height: 175vh; background: var(--deep); z-index: 31; }
.processing-sticky {
  position: sticky;
  top: calc(var(--nav-h) + var(--ribbon-h));
  height: calc(100vh - var(--nav-h) - var(--ribbon-h));
  overflow: hidden;
}
.processing-sticky img { width: 100%; height: 100%; object-fit: cover; object-position: 52% 58%; filter: brightness(.62) saturate(.62) contrast(1.06); }
.processing-sticky::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(3,9,13,.96) 0%, rgba(3,9,13,.82) 28%, rgba(3,9,13,.26) 64%, rgba(3,9,13,.45) 100%),
    linear-gradient(0deg, rgba(3,9,13,.5), rgba(3,9,13,0) 45%);
}
.processing-copy { position: absolute; inset: 0; z-index: 2; width: min(1440px, calc(100% - 96px)); margin: auto; display: flex; align-items: center; }
.processing-copy > div { width: 48%; }
.processing-copy h2 { margin: 18px 0 26px; max-width: 800px; font-family: Arial, Helvetica, sans-serif; font-size: clamp(48px, 3.65vw, 70px); font-weight: 800; font-stretch: normal; line-height: 1.02; letter-spacing: -.032em; }
.processing-copy p { color: var(--steel); font-size: clamp(17px, 1vw, 19px); line-height: 1.42; }
.process-list { margin-top: 34px; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(203,210,212,.35); border-left: 1px solid rgba(203,210,212,.35); }
.process-list span { min-height: 64px; padding: 20px; border-right: 1px solid rgba(203,210,212,.35); border-bottom: 1px solid rgba(203,210,212,.35); font-weight: 800; }
.capability-note { margin-top: 18px; color: var(--steel); font: 700 10px/1.4 Menlo, Consolas, monospace; letter-spacing: .1em; }

.applications-section { padding: 150px 0; background: var(--paper); color: var(--deep); z-index: 32; }
.application-grid { margin-top: 70px; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.application-card { position: relative; min-height: 560px; overflow: hidden; background: var(--ink); color: #fff; }
.application-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; filter: brightness(.68); transition: transform .7s cubic-bezier(.2,.8,.2,1); }
.application-card:hover img { transform: scale(1.025); }
.application-card .card-copy { position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; padding: 36px; background: linear-gradient(rgba(3,9,13,0), rgba(3,9,13,.92)); }
.application-card h3 { margin: 14px 0 10px; font-size: clamp(34px, 2.15vw, 42px); line-height: 1.05; }
.application-card p { margin: 0; color: var(--steel); font-size: 17px; line-height: 1.5; }
.application-disclaimer { margin: 30px 0 0; color: #596267; font-size: 14px; line-height: 1.6; }

.rfq-path { padding: 150px 0 180px; background: var(--ink); color: #fff; z-index: 33; }
.rfq-steps { margin-top: 70px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(203,210,212,.35); border-left: 1px solid rgba(203,210,212,.35); }
.rfq-step { min-height: 180px; padding: 28px; border-right: 1px solid rgba(203,210,212,.35); border-bottom: 1px solid rgba(203,210,212,.35); }
.rfq-step .num { color: var(--green); font: 700 13px Menlo, Consolas, monospace; }
.rfq-step strong { display: block; margin-top: 30px; font-size: 21px; }
.rfq-cta { margin-top: 58px; display: inline-flex; min-height: 68px; padding: 0 30px; align-items: center; gap: 70px; background: var(--blue); font-weight: 900; }
.home-rfq-panel {
  margin-top: 64px;
  display: grid;
  grid-template-columns: minmax(300px, .82fr) minmax(560px, 1.18fr);
  border: 1px solid rgba(203,210,212,.35);
  background: #08151C;
}
.home-rfq-summary {
  padding: 44px;
  border-right: 1px solid rgba(203,210,212,.35);
  background:
    linear-gradient(145deg, rgba(78,157,113,.14), rgba(78,157,113,0) 54%),
    var(--ink);
}
.home-rfq-summary h3 {
  margin: 24px 0 18px;
  max-width: 420px;
  font-size: clamp(36px, 2.5vw, 48px);
  line-height: 1.02;
  letter-spacing: -.03em;
}
.home-rfq-summary > p { margin: 0; max-width: 440px; color: var(--steel); font-size: 16px; line-height: 1.55; }
.home-rfq-notes { margin-top: 38px; border-top: 1px solid rgba(203,210,212,.28); }
.home-rfq-notes span { display: block; padding: 14px 0; border-bottom: 1px solid rgba(203,210,212,.18); color: var(--steel); font: 700 11px/1.45 Menlo, Consolas, monospace; letter-spacing: .055em; }
.home-rfq-detail-link { display: inline-flex; margin-top: 34px; color: #fff; font-weight: 800; }
.home-rfq-form.quote-form { padding: 32px; border: 0; background: #0B1820; }

.site-footer { padding: 42px 48px; display: flex; justify-content: space-between; align-items: flex-end; background: var(--deep); border-top: 1px solid rgba(203,210,212,.25); }
.site-footer img { width: 230px; height: auto; display: block; filter: url(#header-logo-white); }
.site-footer p { max-width: 660px; margin: 0; color: var(--steel); font-size: 13px; line-height: 1.6; text-align: right; }

.tour-status { position: fixed; top: calc(var(--nav-h) + 14px); right: 24px; z-index: 120; padding: 8px 10px; background: rgba(3,9,13,.84); color: var(--green); font: 700 10px Menlo, Consolas, monospace; letter-spacing: .05em; opacity: 0; pointer-events: none; }
.tour-running .tour-status { opacity: 1; }
.tour-running .tour-control { opacity: 0; pointer-events: none; }

.detail-hero, .quote-page { min-height: 100vh; padding-top: calc(var(--nav-h) + var(--ribbon-h)); background: var(--ink); }
.detail-shell { width: min(1440px, calc(100% - 96px)); margin: 0 auto; padding: 100px 0 130px; position: relative; z-index: 25; }
.detail-copy { width: 52%; }
.detail-copy h1 { margin: 20px 0 26px; font-family: Arial, Helvetica, sans-serif; font-size: clamp(62px, 5vw, 94px); font-weight: 800; font-stretch: normal; line-height: .98; letter-spacing: -.035em; }
.detail-copy p { max-width: 640px; color: var(--steel); font-size: 19px; line-height: 1.55; }
.spec-table { margin-top: 70px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(203,210,212,.35); border-left: 1px solid rgba(203,210,212,.35); }
.spec-table div { min-height: 110px; padding: 22px; border-right: 1px solid rgba(203,210,212,.35); border-bottom: 1px solid rgba(203,210,212,.35); }
.spec-table small { color: var(--green); font: 700 11px Menlo, Consolas, monospace; }
.spec-table strong { display: block; margin-top: 18px; font-size: 20px; }
.detail-content { padding: 120px 0; background: var(--paper); color: var(--deep); position: relative; z-index: 30; }
.detail-image { margin-top: 60px; height: 620px; overflow: hidden; }
.detail-image img { width: 100%; height: 100%; object-fit: cover; }

.quote-layout { min-height: calc(100vh - var(--nav-h) - var(--ribbon-h)); display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; }
.quote-copy h1 { margin: 18px 0 24px; font-family: Arial, Helvetica, sans-serif; font-size: clamp(60px, 4.8vw, 90px); font-weight: 800; font-stretch: normal; line-height: .98; letter-spacing: -.035em; }
.quote-copy p { color: var(--steel); font-size: 18px; line-height: 1.55; }
.quote-form { padding: 36px; border: 1px solid rgba(203,210,212,.35); background: #0B1820; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.quote-form label { min-height: 96px; padding: 16px; border: 1px solid rgba(203,210,212,.28); background: var(--ink); }
.quote-form span { display: block; margin-bottom: 12px; color: var(--line); font: 700 10px Menlo, Consolas, monospace; letter-spacing: .1em; }
.quote-form select, .quote-form input, .quote-form textarea { width: 100%; border: 0; outline: 0; background: transparent; color: #fff; }
.quote-form label:focus-within { border-color: var(--green); box-shadow: inset 0 0 0 1px rgba(78,157,113,.35); }
.quote-form .full { grid-column: 1 / -1; }
.quote-form textarea { min-height: 84px; resize: none; }
.quote-form button { grid-column: 1 / -1; min-height: 64px; border: 0; background: var(--blue); color: #fff; font-weight: 900; cursor: pointer; }
.form-note { grid-column: 1 / -1; color: var(--line); font-size: 12px; line-height: 1.5; }

@media (max-width: 1120px) {
  .finder { grid-template-columns: 1fr 1fr; }
  .finder .find-button { grid-column: 1 / -1; min-height: 76px; }
  .home-rfq-panel { grid-template-columns: 1fr; }
  .home-rfq-summary { border-right: 0; border-bottom: 1px solid rgba(203,210,212,.35); }
}

@media (max-width: 900px) {
  :root { --nav-h: 72px; --ribbon-h: 0px; }
  .site-nav { padding: 0 20px; }
  .site-nav img { width: 186px; }
  .site-links a:not(.quote-link) { display: none; }
  .site-links { margin-left: auto; gap: 0; }
  .site-links .tour-control { width: 44px; min-height: 44px; margin-right: 10px; justify-content: center; border: 1px solid rgba(203,210,212,.32); font-size: 0; }
  .site-links .tour-control::before { margin: 0; font-size: 10px; }
  .site-links .quote-link { width: 54px; padding: 16px 0; font-size: 0; }
  .site-links .quote-link::after { content: 'RFQ'; font-size: 12px; }
  .section-shell, .hero-content, .processing-copy, .detail-shell { width: calc(100% - 40px); }
  .hero-content { align-items: flex-start; padding-top: 62px; }
  .hero-copy { width: 100%; }
  .hero-copy h1 { max-width: 100%; font-size: clamp(42px, 11.2vw, 52px); line-height: .94; letter-spacing: -.026em; }
  .hero-copy h1 span { width: auto; white-space: normal; }
  .hero-line-bridge { margin-top: .18em; margin-bottom: .14em; font-size: .74em; }
  .hero-copy p { max-width: 92%; font-size: 16px; }
  .hero-actions { flex-direction: column; width: 220px; }
  .spec-layer h2 { top: 52px; left: 20px; width: 72%; font-size: 42px; }
  .spec-node { width: 42vw; padding: 14px; }
  .spec-a { left: 20px; top: 52%; }
  .spec-b { left: 20px; top: 72%; }
  .spec-c { right: 20px; top: 42%; }
  .spec-d { right: 20px; top: 65%; }
  .finder { grid-template-columns: 1fr 1fr; }
  .finder .find-button { grid-column: 1 / -1; }
  .product-row, .product-row:nth-child(even) { grid-template-columns: 1fr; height: auto; }
  .product-row:nth-child(even) .product-copy { order: initial; }
  .product-media { min-height: 280px; }
  .processing-copy > div { width: 100%; }
  .processing-copy h2 { font-size: 46px; line-height: 1.02; }
  .application-grid, .quote-layout { grid-template-columns: 1fr; }
  .application-card { min-height: 450px; }
  .rfq-steps { grid-template-columns: 1fr 1fr; }
  .site-footer { align-items: flex-start; gap: 30px; flex-direction: column; }
  .site-footer p { text-align: left; }
  .detail-copy { width: 100%; }
  .detail-copy h1, .quote-copy h1 { font-size: 50px; line-height: 1; }
  .spec-table { grid-template-columns: 1fr 1fr; }
  .quote-layout { padding: 70px 0; }
  .quote-form { grid-template-columns: 1fr; }
  .quote-form .full, .quote-form button, .form-note { grid-column: 1; }
  .home-rfq-summary { padding: 30px 24px; }
  .home-rfq-form.quote-form { padding: 20px; }
  .detail-image { height: 420px; }
  #coil-canvas { opacity: .86; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .product-media img { transition: none; }
}