:root {
  --porcelain: #f6f7f5;
  --paper: #ffffff;
  --ink: #121518;
  --muted: #687178;
  --blue: #0b4c8c;
  --red: #d92e2e;
  --silver: #bcc4c8;
  --line: #dfe3e3;
  --font: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --page: min(1440px, calc(100vw - 64px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--porcelain);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 12px 16px;
  color: white;
  background: var(--blue);
  transform: translateY(-150%);
}
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid rgba(11, 76, 140, .45); outline-offset: 4px; }

.site-header {
  position: fixed;
  z-index: 20;
  inset: 0 0 auto;
  height: 78px;
  background: rgba(246, 247, 245, .94);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  transition: border-color .25s ease, background .25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); background: rgba(255, 255, 255, .96); }
.header-inner {
  width: var(--page);
  height: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 210px 1fr 210px;
  align-items: center;
}
.brand { display: block; width: 156px; }
.brand img { width: 100%; height: auto; }
.primary-nav { display: flex; justify-content: center; gap: clamp(28px, 3.2vw, 52px); }
.primary-nav a { position: relative; padding: 29px 0 25px; font-size: 14px; font-weight: 600; }
.primary-nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 18px;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}
.primary-nav a:hover::after { transform: scaleX(1); }
.header-rfq {
  justify-self: end;
  min-width: 142px;
  min-height: 44px;
  padding: 12px 16px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #fff;
  background: var(--red);
  font-size: 14px;
  font-weight: 700;
}
.header-rfq:hover, .button-primary:hover { background: #bd2323; }
.menu-toggle { display: none; }

.hero {
  width: var(--page);
  min-height: 780px;
  margin: 0 auto;
  padding-top: 78px;
  display: grid;
  grid-template-columns: minmax(440px, 41%) minmax(0, 59%);
}
.hero-copy {
  position: relative;
  z-index: 2;
  padding: clamp(110px, 12vh, 154px) 5vw 58px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  animation: hero-in .8s cubic-bezier(.22, .8, .3, 1) both;
}
.eyebrow {
  margin: 0 0 28px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .19em;
}
.hero h1 {
  margin: 0;
  font-size: clamp(58px, 5.8vw, 88px);
  line-height: 1.08;
  letter-spacing: -.07em;
  font-weight: 650;
}
.hero h1 span { color: var(--blue); }
.hero-lead {
  max-width: 560px;
  margin: 35px 0 0;
  color: #50595f;
  font-size: 17px;
  line-height: 1.85;
}
.hero-actions { margin-top: 38px; display: flex; align-items: center; gap: 30px; }
.button {
  min-height: 52px;
  padding: 15px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  font-size: 14px;
  font-weight: 700;
  transition: background .2s ease, transform .2s ease;
}
.button-primary { min-width: 184px; color: #fff; background: var(--red); }
.button-primary:hover { transform: translateY(-2px); }
.text-link { padding: 14px 0; border-bottom: 1px solid var(--ink); font-size: 14px; font-weight: 700; }
.text-link span { margin-left: 12px; }
.hero-tags {
  margin: auto 0 0;
  padding: 30px 0 0;
  display: flex;
  gap: 22px;
  list-style: none;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .14em;
}
.hero-tags li + li::before { content: "/"; margin-right: 22px; color: var(--silver); }
.hero-visual { position: relative; margin: 0; overflow: hidden; background: #e9edef; }
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 1px 0 0 rgba(18, 21, 24, .08);
  pointer-events: none;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 52% center; }
.hero-visual figcaption {
  position: absolute;
  z-index: 1;
  right: 28px;
  bottom: 25px;
  left: 28px;
  display: flex;
  justify-content: space-between;
  color: #354149;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.pathways { background: var(--paper); }
.pathways-heading {
  width: var(--page);
  margin: 0 auto;
  padding: 112px 0 62px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  align-items: end;
}
.section-heading .eyebrow { margin: 0; }
.section-heading h2 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(34px, 3.3vw, 52px);
  line-height: 1.25;
  letter-spacing: -.045em;
  font-weight: 600;
}
.pathway-grid { width: var(--page); margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); }
.pathway {
  min-height: 210px;
  padding: 26px 28px 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1fr;
  border-right: 1px solid var(--line);
  transition: color .25s ease, background .25s ease;
}
.pathway:first-child { border-left: 1px solid var(--line); }
.pathway:hover { color: #fff; background: var(--blue); }
.pathway-index { color: var(--muted); font-size: 11px; font-weight: 700; }
.pathway:hover .pathway-index, .pathway:hover small { color: rgba(255,255,255,.7); }
.pathway-copy { align-self: end; display: flex; flex-direction: column; gap: 10px; }
.pathway-copy strong { font-size: 22px; font-weight: 600; }
.pathway-copy small { color: var(--muted); font-size: 11px; letter-spacing: .06em; }
.pathway-arrow { grid-column: 2; grid-row: 1 / 3; align-self: end; font-size: 24px; transition: transform .2s ease; }
.pathway:hover .pathway-arrow { transform: translate(3px, -3px); }

.products {
  width: var(--page);
  margin: 0 auto;
  padding: 145px 0;
  display: grid;
  grid-template-columns: minmax(320px, .75fr) minmax(0, 1.55fr);
  grid-template-areas: "intro stage" "selector stage";
  gap: 64px 8vw;
}
.products-intro { grid-area: intro; }
.products-intro h2, .applications h2, .manufacturing h2, .rfq h2 {
  margin: 0;
  font-size: clamp(39px, 4vw, 62px);
  line-height: 1.19;
  letter-spacing: -.055em;
  font-weight: 600;
}
.products-intro > p:last-child { max-width: 460px; margin: 30px 0 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.product-selector { grid-area: selector; align-self: end; border-top: 1px solid var(--ink); }
.product-tab {
  width: 100%;
  min-height: 72px;
  padding: 0;
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  text-align: left;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}
.product-tab span { font-size: 10px; }
.product-tab strong { font-size: 16px; font-weight: 600; }
.product-tab small { font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.product-tab.is-active { color: var(--blue); }
.product-tab.is-active strong { font-size: 19px; }
.product-stage { grid-area: stage; min-height: 750px; display: grid; grid-template-rows: 1fr auto; background: #ecefed; }
.product-stage-image { min-height: 520px; padding: 6%; display: grid; place-items: center; overflow: hidden; }
.product-stage-image img { width: 100%; height: 100%; max-height: 520px; object-fit: contain; filter: drop-shadow(0 24px 25px rgba(22,32,39,.10)); transition: opacity .18s ease, transform .35s ease; }
.product-stage.is-changing .product-stage-image img { opacity: 0; transform: scale(.975); }
.product-stage-copy {
  padding: 32px 36px 35px;
  display: grid;
  grid-template-columns: 1fr 1.7fr;
  gap: 10px 30px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}
.product-stage-copy > p:first-child { margin: 6px 0 0; color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .15em; }
.product-stage-copy h3 { margin: 0; font-size: 29px; font-weight: 600; letter-spacing: -.035em; }
.product-stage-copy > p:nth-of-type(2) { grid-column: 2; margin: 8px 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.product-stage-copy a { grid-column: 2; margin-top: 6px; padding-top: 16px; display: flex; justify-content: space-between; border-top: 1px solid var(--ink); font-size: 13px; font-weight: 700; }

.applications { padding: 130px max(32px, calc((100vw - 1440px) / 2)); background: var(--paper); }
.applications-head { display: grid; grid-template-columns: 1.35fr .65fr; align-items: end; gap: 10vw; margin-bottom: 70px; }
.applications-head > p { max-width: 440px; margin: 0 0 8px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.application-list { border-top: 1px solid var(--ink); }
.application-list a {
  min-height: 110px;
  display: grid;
  grid-template-columns: 80px 1.2fr 1fr auto;
  align-items: center;
  border-bottom: 1px solid var(--line);
  transition: padding .22s ease, color .22s ease;
}
.application-list a:hover { padding: 0 20px; color: var(--blue); }
.application-list span { color: var(--muted); font-size: 10px; }
.application-list strong { font-size: clamp(24px, 2.5vw, 38px); font-weight: 550; }
.application-list small { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.application-list b { font-size: 25px; font-weight: 400; }

.manufacturing { padding: 110px max(32px, calc((100vw - 1440px) / 2)); color: #fff; background: var(--ink); }
.manufacturing-kicker { margin-bottom: 70px; color: #91a0aa; font-size: 10px; font-weight: 800; letter-spacing: .18em; }
.manufacturing-copy { display: grid; grid-template-columns: 1.4fr .6fr; align-items: end; gap: 8vw; }
.manufacturing-copy p { max-width: 460px; margin: 0 0 8px; color: #adb5ba; font-size: 15px; line-height: 1.8; }
.manufacturing-flow { margin: 90px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; border-top: 1px solid #4a5054; }
.manufacturing-flow li { min-height: 180px; padding: 24px 26px; display: flex; flex-direction: column; border-right: 1px solid #363b3f; }
.manufacturing-flow li:first-child { border-left: 1px solid #363b3f; }
.manufacturing-flow span { color: #7f888e; font-size: 10px; }
.manufacturing-flow strong { margin-top: auto; font-size: 20px; font-weight: 550; }
.manufacturing-flow small { margin-top: 8px; color: #7f888e; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }

.rfq { width: var(--page); margin: 0 auto; padding: 135px 0; display: grid; grid-template-columns: 1.2fr .8fr; gap: 10vw; align-items: end; }
.rfq-action { max-width: 470px; }
.rfq-action p { margin: 0 0 30px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.site-footer { width: var(--page); min-height: 150px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.site-footer p:nth-child(2) { text-align: center; letter-spacing: .08em; text-transform: uppercase; }
.site-footer p:last-child { text-align: right; }
.footer-brand { width: 128px; }

@keyframes hero-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 1080px) {
  :root { --page: calc(100vw - 48px); }
  .header-inner { grid-template-columns: 180px 1fr 155px; }
  .primary-nav { gap: 22px; }
  .hero { min-height: 700px; grid-template-columns: 46% 54%; }
  .hero-copy { padding-right: 3vw; }
  .hero h1 { font-size: clamp(52px, 6.6vw, 70px); }
  .products { gap: 50px 5vw; }
  .product-stage { min-height: 680px; }
}

@media (max-width: 820px) {
  :root { --page: calc(100vw - 36px); }
  .site-header { height: 68px; }
  .header-inner { display: flex; justify-content: space-between; }
  .brand { width: 132px; }
  .header-rfq { display: none; }
  .menu-toggle {
    position: fixed;
    z-index: 3;
    top: 11px;
    right: 16px;
    width: 46px;
    height: 46px;
    padding: 0;
    display: grid;
    place-content: center;
    gap: 7px;
    background: transparent;
    border: 0;
  }
  .menu-toggle span:not(.sr-only) { width: 23px; height: 1px; background: var(--ink); transition: transform .2s ease; }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }
  .primary-nav {
    position: fixed;
    z-index: 1;
    top: 0;
    right: auto;
    bottom: auto;
    left: 0;
    width: 100vw;
    height: 100dvh;
    padding: 110px 24px 40px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 0;
    background: var(--porcelain);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .28s ease, visibility .28s;
  }
  .primary-nav.is-open { transform: none; visibility: visible; }
  .primary-nav a { padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 25px; }
  .primary-nav a::after { display: none; }
  .hero { width: 100%; min-height: 0; padding-top: 68px; display: flex; flex-direction: column; }
  .hero-copy { width: var(--page); min-height: 590px; margin: 0 auto; padding: 86px 0 36px; }
  .hero h1 { font-size: clamp(48px, 13vw, 68px); }
  .hero-lead { max-width: 620px; }
  .hero-tags { margin-top: 62px; }
  .hero-visual { height: min(70vw, 560px); }
  .pathways-heading { padding: 90px 0 50px; grid-template-columns: 1fr; gap: 26px; }
  .pathway-grid { grid-template-columns: 1fr; border-bottom: 1px solid var(--line); }
  .pathway { min-height: 150px; border-left: 0 !important; border-right: 0; }
  .products { padding: 110px 0; grid-template-columns: 1fr; grid-template-areas: "intro" "selector" "stage"; gap: 48px; }
  .product-stage { min-height: 660px; }
  .applications { padding-top: 100px; padding-bottom: 100px; }
  .applications-head, .manufacturing-copy, .rfq { grid-template-columns: 1fr; gap: 35px; }
  .application-list a { grid-template-columns: 54px 1fr auto; }
  .application-list small { display: none; }
  .manufacturing-flow { grid-template-columns: 1fr 1fr; }
  .manufacturing-flow li:nth-child(3) { border-left: 1px solid #363b3f; }
  .rfq { padding: 105px 0; }
}

@media (max-width: 520px) {
  :root { --page: calc(100vw - 32px); }
  .hero-copy { min-height: 575px; padding-top: 72px; }
  .eyebrow { margin-bottom: 23px; font-size: 9px; }
  .hero h1 { font-size: clamp(45px, 14.3vw, 62px); line-height: 1.11; }
  .hero-lead { margin-top: 27px; font-size: 15px; line-height: 1.75; }
  .hero-actions { margin-top: 29px; align-items: flex-start; flex-direction: column; gap: 8px; }
  .hero-tags { margin-top: 46px; gap: 11px; font-size: 8px; }
  .hero-tags li + li::before { margin-right: 11px; }
  .hero-visual { height: 88vw; min-height: 335px; }
  .hero-visual img { object-position: 49% center; }
  .hero-visual figcaption { right: 16px; bottom: 16px; left: 16px; font-size: 7px; }
  .hero-visual figcaption span:first-child { display: none; }
  .pathways-heading { padding-top: 78px; }
  .section-heading h2, .products-intro h2, .applications h2, .manufacturing h2, .rfq h2 { font-size: 36px; }
  .pathway { min-height: 138px; padding: 20px 2px; }
  .products { padding: 90px 0; gap: 38px; }
  .product-tab { min-height: 66px; }
  .product-stage { min-height: 540px; }
  .product-stage-image { min-height: 330px; padding: 8px; }
  .product-stage-copy { padding: 26px 22px; grid-template-columns: 1fr; }
  .product-stage-copy > p:nth-of-type(2), .product-stage-copy a { grid-column: 1; }
  .product-stage-copy h3 { font-size: 25px; }
  .applications { padding-right: 16px; padding-left: 16px; }
  .applications-head { margin-bottom: 48px; }
  .application-list a { min-height: 90px; grid-template-columns: 40px 1fr auto; }
  .application-list strong { font-size: 23px; }
  .manufacturing { padding: 80px 16px; }
  .manufacturing-kicker { margin-bottom: 48px; }
  .manufacturing-flow { margin-top: 62px; grid-template-columns: 1fr; }
  .manufacturing-flow li { min-height: 126px; border-left: 1px solid #363b3f; border-bottom: 1px solid #363b3f; }
  .site-footer { padding: 35px 0; grid-template-columns: 1fr 1fr; gap: 24px; }
  .site-footer p:nth-child(2) { display: none; }
  .site-footer p:last-child { margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}