@font-face { font-family: Inter; font-style: normal; font-weight: 400 700; font-display: swap; src: url('assets/inter-cyrillic.woff2') format('woff2'); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: Inter; font-style: normal; font-weight: 400 700; font-display: swap; src: url('assets/inter-latin.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA-02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Space Grotesk'; font-style: normal; font-weight: 500 700; font-display: swap; src: url('assets/space-grotesk-latin.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA-02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  --bg: #101412;
  --surface: #171c1a;
  --surface-2: #1c221f;
  --text: #edf0ed;
  --muted: #b1bab3;
  --accent: #a9b5a7;
  --line: #39413b;
  --paper: #d6dbd8;
  --paper-deep: #c6ccca;
  --paper-ink: #18201b;
  --paper-muted: #58665d;
  --paper-line: #a9b3ad;
  --paper-accent: #73886f;
  --wrap: 1320px;
  --gutter: clamp(20px, 4.5vw, 72px);
  --section: clamp(76px, 8vw, 124px);
  --body: Inter, Arial, sans-serif;
  --display: 'Space Grotesk', Inter, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 16px/1.65 var(--body); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--display); line-height: 1.08; letter-spacing: -.045em; }
p { max-width: 68ch; }
::selection { background: var(--accent); color: var(--bg); }
.container { width: min(calc(100% - 2 * var(--gutter)), var(--wrap)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 20px; z-index: 100; padding: 10px 16px; background: var(--text); color: var(--bg); clip-path: inset(50%); }
.skip-link:focus { clip-path: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.eyebrow { display: block; color: var(--accent); font-size: 11px; font-weight: 700; line-height: 1.45; letter-spacing: .17em; text-transform: uppercase; }
.section-heading { margin: 14px 0 0; font-size: clamp(42px, 5vw, 76px); font-weight: 600; }
.body-lead { font-size: clamp(19px, 2vw, 25px); line-height: 1.5; }
.body-small { font-size: 15px; }
.text-muted { color: var(--muted); }

/* Shared navigation and controls */
.site-header { position: relative; z-index: 20; height: 78px; background: #0b0e0c; border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; height: 100%; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: none; text-decoration: none; white-space: nowrap; }
.brand-mark { width: 37px; height: 37px; filter: invert(1); }
.brand-word { font: 700 20px/1 var(--display); letter-spacing: .27em; }
.brand-descriptor { margin-left: 5px; padding-left: 13px; border-left: 1px solid var(--line); color: var(--muted); font-size: 9px; font-weight: 700; line-height: 1.3; letter-spacing: .13em; }
.main-nav { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 36px); }
.main-nav a { color: #d0d7d0; font-size: 13px; font-weight: 600; text-decoration: none; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: white; }
.main-nav .nav-cta { padding: 10px 16px; border: 1px solid #637067; }
.nav-toggle { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid #637067; background: transparent; color: var(--text); font-size: 22px; cursor: pointer; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 26px; min-height: 52px; max-width: 100%; padding: 0 20px; border: 1px solid transparent; font-size: 14px; font-weight: 700; line-height: 1.3; text-decoration: none; overflow-wrap: anywhere; transition: background .2s ease, color .2s ease; }
.button span:last-child { font-size: 20px; line-height: 1; }
.button-light, .button-dark { background: var(--text); color: var(--bg); }
.button-light:hover, .button-dark:hover { background: white; }
.button-line { border-color: #8c9990; background: transparent; color: var(--text); }
.button-line:hover { background: #ffffff13; }
.inline-link { display: inline-flex; align-items: center; gap: 20px; padding-bottom: 6px; border-bottom: 1px solid currentColor; font-weight: 700; text-decoration: none; }
.inline-link span { font-size: 20px; line-height: 1; }

/* Full-width opening images; only the context image is intentionally cropped. */
.home-hero, .gt-main-hero, .secondary-hero { position: relative; isolation: isolate; overflow: hidden; background: var(--bg); }
.gt-main-hero { background: radial-gradient(ellipse 58% 68% at 75% 46%, #2b4433 0%, #1c3023 43%, #14231a 75%, var(--bg) 100%); }
.gt-main-hero::before { content: ''; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: url('assets/gt20-wave-mesh.svg') center / 100% auto no-repeat; opacity: .72; }
.gt-main-hero::after { content: ''; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: linear-gradient(90deg, #101a14f0 0%, #101a14bd 27%, #101a1440 55%, transparent 83%), linear-gradient(0deg, var(--bg) 0%, transparent 25%); }
.gt-main-hero .gt-main-hero-inner { z-index: 1; }
.home-hero-inner, .gt-main-hero-inner, .secondary-hero-inner { position: relative; min-height: max(700px, calc(100svh - 78px)); }
.home-hero-picture, .gt-main-hero-art, .secondary-image { position: absolute; z-index: -1; top: 0; bottom: 0; left: 50%; width: 100vw; transform: translateX(-50%); overflow: hidden; }
.home-hero-art { display: block; width: 100%; height: 100%; max-width: none; }
.home-hero-art { object-fit: cover; object-position: center 44%; }
.gt-main-hero-art img, .secondary-photo img {
  position: absolute;
  top: 50%;
  right: 0;
  display: block;
  width: auto;
  height: min(100%, 56.28vw);
  max-width: none;
  aspect-ratio: 1672 / 941;
  transform: translateY(-50%);
  object-fit: contain;
  mix-blend-mode: screen;
}
.gt-main-hero-art img {
  right: 0;
  height: min(calc(100% - 48px), 47vw);
  aspect-ratio: 1672 / 941;
  top: 46%;
  mix-blend-mode: normal;
  mask-image: none;
  filter: contrast(1.08) brightness(1.07);
}
.secondary-photo img {
  mask-image: linear-gradient(to bottom, transparent, #000 3%, #000 97%, transparent), linear-gradient(to right, transparent, #000 3%, #000 97%, transparent);
  mask-composite: intersect;
}
.secondary-hero.clr .secondary-photo img { width: 82%; height: auto; mask-image: radial-gradient(ellipse 61% 48% at 68% 50%, #000 64%, transparent 100%); }
.home-hero-picture::after, .gt-main-hero-art::after, .secondary-image::after { content: ''; position: absolute; inset: 0; pointer-events: none; }
.home-hero-picture::after { background: linear-gradient(90deg, transparent 0%, #10141224 36%, #101412d7 68%, #101412f6 100%), linear-gradient(0deg, #101412d8, transparent 27%); }
.gt-main-hero-art::after, .secondary-image::after { background: linear-gradient(90deg, #101412e5, #101412ad 28%, #10141229 54%, transparent 74%), linear-gradient(0deg, #101412cf, transparent 20%); }
.gt-main-hero-art::before { display: none; }
.gt-main-hero-art::after { display: none; }
.home-hero-inner { display: flex; flex-direction: column; justify-content: space-between; padding-block: 30px 26px; }
.hero-topline, .hero-bottomline { position: relative; z-index: 2; display: flex; justify-content: space-between; gap: 24px; }
.hero-topline { color: var(--text); }
.hero-editorial { position: relative; z-index: 2; width: min(100%, 650px); margin: 70px 0 48px auto; }
.hero-editorial h1 { margin: 15px 0 24px; font-size: clamp(52px, 6.3vw, 88px); line-height: 1.02; }
.hero-editorial p { max-width: 520px; margin-bottom: 30px; color: #d9e0da; font-size: clamp(17px, 1.4vw, 20px); line-height: 1.55; }
.hero-bottomline { padding-top: 15px; border-top: 1px solid #ffffff58; font-size: 10px; letter-spacing: .13em; text-transform: uppercase; }
.gt-main-hero-inner { display: flex; align-items: center; }
.gt-main-hero-copy { position: relative; z-index: 2; width: min(47%, 580px); padding: 40px 0; }
.gt-main-hero-copy h1 { margin: 20px 0 22px; font-size: clamp(82px, 8vw, 132px); line-height: .92; }
.gt-main-hero-copy h1 small, .secondary-hero h1 small { display: block; margin-top: 16px; font-family: var(--body); font-size: clamp(28px, 2.6vw, 40px); font-weight: 500; line-height: 1.15; letter-spacing: 0; }
.gt-main-hero-copy p, .secondary-hero-copy > p:not(.eyebrow) { max-width: 470px; color: #d3dad4; font-size: 18px; line-height: 1.6; }
.gt-main-hero-copy .button { margin-top: 12px; }
.gt-main-hero-note { display: block; margin-top: 18px; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.secondary-hero-inner { display: flex; align-items: center; }
.secondary-hero-copy { position: relative; z-index: 2; width: min(47%, 560px); padding: 40px 0; }
.secondary-hero h1 { margin: 20px 0 22px; font-size: clamp(76px, 8vw, 128px); line-height: .94; }
.secondary-hero-copy > p:not(.eyebrow) { margin-bottom: 28px; }
.secondary-photo { display: block; width: 100%; height: 100%; }
.secondary-image small { display: none; }
.detail-meta { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); background: var(--bg); }
.detail-meta div { min-width: 0; padding: 18px 22px; border-right: 1px solid var(--line); }
.detail-meta div:first-child { padding-left: 0; }
.detail-meta div:last-child { border-right: 0; }
.detail-meta small { display: block; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.detail-meta strong { display: block; margin-top: 6px; font-size: 14px; font-weight: 500; line-height: 1.4; overflow-wrap: break-word; }

/* Home: approach, four equal developments, then technical detail. */
.project-statement, .developments, .engineering-block, .detail-intro, .secondary-overview, .materials, .timeline, .secondary-facts, .project-next, .related, .collaboration { padding-block: var(--section); }
.project-statement, .detail-intro, .secondary-overview, .materials, .secondary-facts, .related { background: var(--surface); }
.statement-top, .engineering-head, .developments-head, .detail-intro-grid, .secondary-overview-inner, .materials-head, .project-next-inner, .collaboration-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 80px); }
.statement-top { grid-template-columns: minmax(140px, .25fr) minmax(0, 1fr); align-items: start; }
.statement-top h2, .engineering-head h2, .detail-intro h2, .secondary-overview h2, .project-next h2, .collaboration h2 { margin: 0; font-size: clamp(40px, 4.6vw, 68px); font-weight: 500; }
.statement-top h2 em { color: var(--accent); font-style: normal; }
.process-rail { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 54px; border-top: 1px solid var(--line); }
.process-step { min-width: 0; padding: 26px 22px 0 0; border-right: 1px solid var(--line); }
.process-step + .process-step { padding-left: 22px; }
.process-step:last-child { border-right: 0; }
.process-step h3 { margin: 22px 0 12px; font-size: 25px; font-weight: 600; }
.process-step p, .engineering-head p, .developments-head p, .development-copy p, .detail-intro-copy p, .secondary-overview p, .materials-head p, .material-card p, .timeline-step p, .secondary-technical-copy p, .project-next p, .collaboration-copy p { color: var(--muted); }
.process-step p { margin: 0; font-size: 15px; }
.developments, .materials, .secondary-facts, .related { --text: var(--paper-ink); --muted: var(--paper-muted); --line: var(--paper-line); --accent: var(--paper-accent); background: var(--paper); color: var(--text); }
.developments-head { align-items: end; margin-bottom: 50px; }
.developments-head p { max-width: 430px; margin: 0 0 4px; font-size: 18px; }
.development-list { border-top: 1px solid var(--line); }
.development-row { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(36px, 6vw, 90px); align-items: center; min-height: 450px; padding: 58px 0 50px; border-bottom: 1px solid var(--line); text-decoration: none; }
.development-index { position: absolute; top: 26px; left: 0; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.development-media { grid-column: 1; grid-row: 1; display: flex; align-items: center; justify-content: center; min-width: 0; aspect-ratio: 1672 / 941; background: transparent; overflow: hidden; }
.development-media img { width: 100%; height: 100%; object-fit: contain; }
.development-copy { grid-column: 2; grid-row: 1; min-width: 0; }
.development-copy h3 { margin: 12px 0 17px; font-size: clamp(38px, 4vw, 62px); font-weight: 600; overflow-wrap: break-word; }
.development-copy p { margin: 0 0 28px; font-size: 17px; }
.development-link { display: inline-block; padding-bottom: 5px; border-bottom: 1px solid var(--accent); color: var(--text); font-size: 14px; font-weight: 700; }
.development-row:nth-child(even) .development-media { grid-column: 2; }
.development-row:nth-child(even) .development-copy { grid-column: 1; }
.engineering-block { background: var(--surface); }
.engineering-head { align-items: end; margin-bottom: 48px; }
.engineering-head h2 { margin-top: 16px; }
.engineering-head p { max-width: 440px; margin: 0; font-size: 18px; }
.engineering-main { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.engineering-art { position: relative; display: flex; align-items: center; justify-content: center; min-width: 0; min-height: 620px; padding: 30px; border-right: 1px solid var(--line); }
.engineering-art img { display: block; width: 100%; height: min(68vw, 620px); max-height: 620px; object-fit: contain; }
.engineering-art .eyebrow { position: absolute; bottom: 20px; left: 24px; }
.engineering-list { display: flex; flex-direction: column; justify-content: center; min-width: 0; padding: 24px clamp(26px, 4vw, 64px); }
.engineering-point { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.engineering-point > span { color: var(--accent); font-size: 11px; font-weight: 700; }
.engineering-point h3 { margin: 0 0 7px; font-size: 23px; font-weight: 500; }
.engineering-point p { margin: 0; color: var(--muted); font-size: 14px; }
.engineering-list .inline-link { align-self: flex-start; margin-top: 28px; }

/* Project details and unmasked CAD views. */
.detail-intro-grid, .secondary-overview-inner { align-items: start; }
.detail-intro h2, .secondary-overview h2 { margin-top: 16px; }
.detail-intro-copy { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 25px; }
.detail-intro-copy p, .secondary-overview p { margin: 0 0 16px; font-size: 17px; }
.model-viewer { --text: var(--paper-ink); --muted: var(--paper-muted); --line: var(--paper-line); --accent: var(--paper-accent); padding-block: var(--section); background: var(--paper-deep); color: var(--text); }
.viewer-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 400px); gap: 35px; align-items: end; }
.viewer-head p { margin: 0; color: var(--muted); }
.viewer-layout { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 34px; margin-top: 42px; }
.viewer-stage { display: flex; align-items: center; justify-content: center; min-width: 0; min-height: 600px; padding: 28px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: transparent; }
.viewer-stage img { display: block; width: 100%; max-width: 900px; height: auto; max-height: 620px; object-fit: contain; filter: grayscale(1); }
.viewer-side { display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; padding: 16px 0; }
.viewer-note { padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 1.6; }
.viewer-note strong { display: block; margin-bottom: 8px; color: var(--text); }
.viewer-spec { display: grid; margin-bottom: 24px; border-top: 1px solid var(--line); }
.viewer-spec span { padding: 16px 0; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.viewer-spec strong { padding: 11px 0; border-top: 1px solid var(--line); font-size: 13px; font-weight: 600; }
.materials-head { align-items: end; margin-bottom: 46px; }
.materials-head p { margin: 0; }
.materials-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.material-card { min-width: 0; padding: 24px 25px 0 0; border-right: 1px solid var(--line); }
.material-card + .material-card { padding-left: 25px; }
.material-card:last-child { border-right: 0; }
.material-card h3 { margin: 36px 0 12px; font-size: 26px; font-weight: 600; overflow-wrap: break-word; }
.material-card p { font-size: 15px; }
.timeline { background: var(--bg); }
.timeline h2 { margin: 14px 0 45px; }
.timeline-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.timeline-step { position: relative; padding: 26px 28px 0 0; }
.timeline-step::before { content: ''; position: absolute; top: -6px; left: 0; width: 11px; height: 11px; border: 1px solid var(--accent); border-radius: 50%; background: var(--bg); }
.timeline-step.current::before { background: var(--accent); }
.timeline-step small { color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.timeline-step h3 { margin: 28px 0 10px; font-size: 25px; }
.secondary-technical { padding-block: var(--section); background: var(--surface-2); }
.secondary-technical-inner { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(30px, 6vw, 80px); align-items: center; }
.secondary-technical-inner.reverse .secondary-technical-art { order: 2; }
.secondary-technical-inner.reverse .secondary-technical-copy { order: 1; }
.secondary-technical-art { display: flex; align-items: center; justify-content: center; min-width: 0; aspect-ratio: 16 / 9; background: var(--surface-2); }
.secondary-technical-art img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: screen; }
.secondary-technical-copy h2 { margin: 16px 0 24px; font-size: clamp(38px, 4vw, 62px); font-weight: 500; }
.secondary-technical-copy p { font-size: 17px; }
.project-next { background: var(--bg); }
.project-next-inner { align-items: center; }
.project-next h2 { margin-top: 16px; }
.project-next p { margin: 0; font-size: 18px; }
.related { padding-block: 72px var(--section); }
.related h2 { margin: 14px 0 30px; font-size: clamp(38px, 4vw, 58px); }
.related-list { border-top: 1px solid var(--line); }
.related-list a { display: flex; justify-content: space-between; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); font: 600 clamp(19px, 2vw, 28px)/1.3 var(--display); text-decoration: none; }
.related-list a:hover { color: var(--accent); }
.collaboration { background: var(--surface-2); }
.collaboration-inner { align-items: end; }
.collaboration h2 { margin-top: 16px; }
.collaboration-copy p { margin-bottom: 24px; font-size: 18px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.site-footer { padding: 54px 0 32px; border-top: 1px solid #243329; background: #111814; color: #9eb0a2; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) repeat(3, minmax(0, 1fr)); gap: clamp(24px, 4vw, 54px); padding-bottom: 38px; border-bottom: 1px solid #202c24; }
.footer-col-brand .brand { margin-bottom: 14px; }
.footer-col-brand p { max-width: 32ch; margin: 0; color: #8c9d90; font-size: 13px; line-height: 1.55; }
.footer-heading { margin: 0 0 16px; color: var(--accent); font-family: var(--body); font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.footer-menu { display: flex; flex-direction: column; gap: 10px; }
.footer-menu a { color: #c4d0c6; font-size: 13px; font-weight: 500; text-decoration: none; transition: color .2s ease; }
.footer-menu a:hover { color: #ffffff; }
.footer-badge { display: inline-block; margin-left: 6px; padding: 2px 6px; border-radius: 2px; background: #25392b; color: #a4d4ab; font-size: 9px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; color: #748477; font-size: 12px; }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; font-size: 12px; }
.footer-inner a { text-decoration: none; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a:hover { color: var(--text); }

@media (max-width: 1050px) {
  .brand-descriptor { display: none; }
  .main-nav { gap: 16px; }
  .engineering-main { grid-template-columns: minmax(0, 1fr) minmax(0, .8fr); }
  .engineering-art { min-height: 520px; }
  .engineering-art img { height: min(62vw, 520px); }
  .viewer-layout { grid-template-columns: minmax(0, 1fr) 180px; }
}
@media (max-width: 1100px) {
  .gt-main-hero::after { background: linear-gradient(90deg, #101a14bf, transparent 80%), linear-gradient(0deg, var(--bg) 0%, transparent 28%, #101a1444 100%); }
  .gt-main-hero-inner, .secondary-hero-inner {
    min-height: calc(100svh - 78px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding-block: 0;
  }
  .gt-main-hero-art, .secondary-image {
    position: relative;
    z-index: 0;
    inset: auto;
    left: 50%;
    order: -1;
    flex: none;
    width: 100vw;
    height: auto;
    aspect-ratio: 1672 / 941;
    transform: translateX(-50%);
  }
  .gt-main-hero-art { aspect-ratio: 2 / 1; }
  .gt-main-hero-art::after, .secondary-image::after {
    background: linear-gradient(0deg, var(--bg), transparent 7%, transparent 93%, var(--bg));
  }
  .gt-main-hero-art img, .secondary-photo img, .secondary-hero.clr .secondary-photo img {
    position: static;
    width: 100%;
    height: 100%;
    margin: 0;
    aspect-ratio: auto;
    transform: none;
    object-fit: contain;
    object-position: center;
    mask-image: none;
  }
  .gt-main-hero-art img { height: calc(100% - 32px); margin: 16px 0; filter: contrast(1.08) brightness(1.07); }
  .gt-main-hero-copy, .secondary-hero-copy {
    width: min(100%, 620px);
    padding: 18px 0 48px;
  }
}
@media (max-width: 760px) {
  .gt-main-hero::before { background-size: 210% auto; background-position: center -20px; }
  .gt-main-hero::after { background: linear-gradient(0deg, var(--bg) 0%, transparent 25%, #101a1433 100%); }
  .gt-main-hero-art { aspect-ratio: 4 / 3; }
  :root { --section: 70px; --gutter: 20px; }
  .site-header { height: 70px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-word { font-size: 18px; }
  .nav-toggle { display: flex; }
  .main-nav { position: absolute; top: 70px; right: 0; left: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px var(--gutter) 22px; border-bottom: 1px solid var(--line); background: #0b0e0c; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .main-nav .nav-cta { margin-top: 12px; text-align: center; }
  .home-hero-inner { min-height: max(760px, calc(100svh - 70px)); }
  .gt-main-hero-inner, .secondary-hero-inner { min-height: calc(100svh - 70px); }
  .home-hero-inner { padding-block: 24px 24px; }
  .home-hero-art { object-position: 29% center; }
  .home-hero-picture::after { background: linear-gradient(0deg, #101412 0%, #101412f8 15%, #101412df 42%, #10141232 73%, #10141274 100%); }
  .hero-topline span:last-child, .hero-bottomline span:last-child { display: none; }
  .hero-editorial { width: 100%; margin: auto 0 30px; }
  .hero-editorial h1 { font-size: clamp(42px, 10.5vw, 60px); }
  .hero-editorial p { font-size: 16px; }
  .hero-bottomline { font-size: 9px; }
  .gt-main-hero-copy h1 { font-size: clamp(78px, 19vw, 112px); }
  .secondary-hero h1 { font-size: clamp(72px, 18vw, 110px); }
  .gt-main-hero-copy h1 small, .secondary-hero h1 small { font-size: clamp(27px, 7vw, 34px); }
  .gt-main-hero-copy p, .secondary-hero-copy > p:not(.eyebrow) { font-size: 16px; }
  .detail-meta { grid-template-columns: 1fr; }
  .detail-meta div, .detail-meta div:first-child { padding: 13px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .detail-meta div:last-child { border-bottom: 0; }
  .statement-top, .engineering-head, .developments-head, .detail-intro-grid, .secondary-overview-inner, .materials-head, .project-next-inner, .collaboration-inner { grid-template-columns: 1fr; gap: 22px; }
  .statement-top h2, .engineering-head h2, .detail-intro h2, .secondary-overview h2, .project-next h2, .collaboration h2 { font-size: clamp(38px, 9vw, 54px); }
  .process-rail { grid-template-columns: 1fr; margin-top: 34px; }
  .process-step, .process-step + .process-step { padding: 20px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-step:last-child { border-bottom: 0; }
  .process-step h3 { margin: 10px 0 8px; }
  .developments-head { margin-bottom: 26px; }
  .development-row { display: flex; flex-direction: column; align-items: stretch; min-height: 0; gap: 0; padding: 48px 0 44px; }
  .development-index { top: 19px; }
  .development-media { width: 100%; margin-bottom: 20px; }
  .development-copy h3 { font-size: clamp(37px, 9vw, 52px); }
  .development-copy p { font-size: 16px; }
  .engineering-main { grid-template-columns: 1fr; }
  .engineering-art { min-height: 0; padding: 24px 0 48px; border-right: 0; border-bottom: 1px solid var(--line); }
  .engineering-art img { width: 100%; height: auto; max-height: 460px; }
  .engineering-art .eyebrow { bottom: 16px; left: 0; }
  .engineering-list { padding: 12px 0 28px; }
  .detail-intro-copy { grid-template-columns: 1fr; gap: 0; }
  .viewer-head, .viewer-layout { grid-template-columns: 1fr; }
  .viewer-head { gap: 16px; }
  .viewer-layout { gap: 18px; margin-top: 28px; }
  .viewer-stage { min-height: 0; padding: 18px 0; aspect-ratio: 1 / 1; }
  .viewer-stage img { width: 100%; max-width: 100%; max-height: 100%; height: 100%; object-fit: contain; }
  .viewer-side { padding: 0; }
  .viewer-spec { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .viewer-spec span { grid-column: 1 / -1; }
  .viewer-spec strong { padding-right: 8px; font-size: 11px; overflow-wrap: break-word; }
  .materials-grid, .timeline-grid { grid-template-columns: 1fr; }
  .material-card, .material-card + .material-card { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .material-card:last-child { border-bottom: 0; }
  .material-card h3 { margin: 16px 0 8px; }
  .timeline-grid { border-top: 0; border-left: 1px solid var(--line); margin-left: 5px; }
  .timeline-step { padding: 0 0 30px 22px; }
  .timeline-step::before { top: 4px; left: -6px; }
  .secondary-technical-inner, .secondary-technical-inner.reverse { grid-template-columns: 1fr; }
  .secondary-technical-inner.reverse .secondary-technical-art, .secondary-technical-inner.reverse .secondary-technical-copy { order: initial; }
  .secondary-technical-art { aspect-ratio: 16 / 9; }
  .collaboration-inner { align-items: start; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-inner { flex-wrap: wrap; }
  .footer-links { width: 100%; }
}
@media (max-width: 400px) {
  .home-hero-inner { min-height: max(800px, calc(100svh - 70px)); }
  .hero-editorial h1 { font-size: 42px; }
  .gt-main-hero-copy h1 { font-size: 78px; }
  .secondary-hero h1 { font-size: 72px; }
  .contact-actions .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}