:root {
  --ink: #151b1d;
  --steel: #384247;
  --copper: #c86933;
  --lime: #d8f24b;
  --sand: #d6c8b1;
  --mist: #f3f1ea;
  --paper: #ebe8df;
  --white: #fff;
  --line-dark: rgba(255,255,255,.18);
  --line-light: rgba(21,27,29,.18);
  --header-h: 84px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--ink); font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif; text-rendering: geometricPrecision; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
button, input, textarea { font: inherit; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 1000; padding: 10px 14px; background: var(--lime); color: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: none; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h); display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(22px, 4vw, 68px); color: var(--white); border-bottom: 1px solid rgba(255,255,255,.14); transition: background .3s ease, height .3s ease; }
.site-header.is-scrolled { height: 70px; background: rgba(21,27,29,.92); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
.brand__mark { width: 40px; height: 40px; fill: none; stroke: var(--lime); stroke-width: 3.5; flex: 0 0 auto; }
.brand__mark path + path { stroke: var(--copper); }
.brand__type { display: grid; gap: 2px; }
.brand__type strong { font-size: 15px; font-weight: 650; letter-spacing: .1em; }
.brand__type small { font-size: 8px; letter-spacing: .18em; opacity: .58; white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: clamp(18px, 2.2vw, 38px); font-size: 14px; }
.site-nav a { position: relative; padding: 10px 0; opacity: .78; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 4px; height: 1px; background: var(--lime); transition: right .25s ease; }
.site-nav a:hover, .site-nav a:focus-visible { opacity: 1; }
.site-nav a:hover::after, .site-nav a:focus-visible::after { right: 0; }
.site-nav .nav-contact { padding: 12px 18px; color: var(--ink); background: var(--lime); opacity: 1; }
.site-nav .nav-contact::after { display: none; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: var(--lime); padding: 12px 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--ink); margin: 6px 0; transition: transform .25s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

.hero { position: relative; min-height: 100svh; display: grid; align-items: end; overflow: hidden; color: var(--white); background: var(--ink); }
.hero__image, .hero__shade { position: absolute; inset: 0; height: 100%; object-fit: cover; }
.hero__image { object-position: center; }
.hero__shade { background: linear-gradient(90deg, rgba(10,14,15,.94) 0%, rgba(10,14,15,.72) 38%, rgba(10,14,15,.18) 70%, rgba(10,14,15,.1) 100%), linear-gradient(0deg, rgba(10,14,15,.72) 0%, transparent 48%); }
.hero__pipe { position: absolute; left: clamp(28px, 4.4vw, 74px); top: var(--header-h); bottom: 0; width: 1px; background: var(--copper); }
.hero__pipe::before, .hero__pipe::after, .hero__pipe span { content: ""; position: absolute; left: -5px; width: 11px; height: 11px; border: 1px solid var(--lime); border-radius: 50%; background: var(--ink); }
.hero__pipe::before { top: 22%; }
.hero__pipe span { top: 54%; }
.hero__pipe::after { bottom: 12%; }
.hero__content { position: relative; z-index: 2; width: min(860px, 78vw); padding: 0 clamp(54px, 9vw, 160px) clamp(130px, 16vh, 190px); }
.eyebrow { margin: 0 0 24px; color: var(--lime); font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 32px; font-size: clamp(56px, 7.4vw, 118px); line-height: .94; font-weight: 300; letter-spacing: -.055em; }
h1 em { color: var(--sand); font-style: normal; }
.hero__lead { max-width: 650px; margin-bottom: 38px; color: rgba(255,255,255,.76); font-size: clamp(17px, 1.45vw, 23px); line-height: 1.7; }
.hero__actions { display: flex; align-items: center; gap: 34px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; padding: 0 26px; border: 0; cursor: pointer; font-weight: 650; }
.button--lime { background: var(--lime); color: var(--ink); clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
.text-link { padding-bottom: 6px; border-bottom: 1px solid rgba(255,255,255,.46); }
.hero__meta { position: absolute; z-index: 2; right: clamp(20px, 4vw, 68px); bottom: 46px; display: flex; gap: 24px; color: rgba(255,255,255,.7); font-size: 12px; letter-spacing: .08em; }
.hero__meta span + span { padding-left: 24px; border-left: 1px solid var(--line-dark); }
.scroll-cue { position: absolute; z-index: 2; left: clamp(72px, 9vw, 160px); bottom: 45px; display: flex; gap: 18px; color: rgba(255,255,255,.52); font-size: 12px; letter-spacing: .1em; }

.section-dark { background: var(--ink); color: var(--white); }
.section-light { background: var(--mist); }
.section-sand { background: var(--sand); }
.section-head { display: grid; grid-template-columns: .65fr 1.5fr .8fr; gap: 5vw; padding: clamp(90px, 11vw, 170px) clamp(24px, 7vw, 118px) clamp(70px, 8vw, 120px); border-bottom: 1px solid var(--line-dark); }
.section-head h2, .products__intro h2, .project__copy h2, .about h2, .contact h2, .fabrication h2 { margin: 0; font-size: clamp(40px, 5vw, 78px); line-height: 1.04; font-weight: 320; letter-spacing: -.045em; }
.section-head > p:last-child { align-self: end; margin: 0; color: rgba(255,255,255,.62); line-height: 1.8; }

.process-feature { display: grid; grid-template-columns: 1.58fr .72fr; min-height: 760px; border-bottom: 1px solid var(--line-dark); }
.process-feature__media { position: relative; overflow: hidden; }
.process-feature__media img { height: 100%; object-fit: cover; }
.image-index { position: absolute; left: 28px; bottom: 24px; padding: 9px 12px; background: var(--lime); color: var(--ink); font-size: 11px; letter-spacing: .12em; }
.process-feature__copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(42px, 6vw, 96px); border-left: 1px solid var(--line-dark); }
.process-no { color: var(--copper); font-size: 11px; letter-spacing: .2em; }
.process-feature h3, .process-slice h3, .treatment h3 { margin: 32px 0; font-size: clamp(36px, 4vw, 64px); line-height: 1.08; font-weight: 350; letter-spacing: -.04em; }
.process-feature__copy > p:not(.process-no), .process-slice__copy > p:not(.process-no), .treatment__copy > p:not(.process-no) { color: rgba(255,255,255,.62); line-height: 1.8; }
.line-link { align-self: flex-start; margin-top: 34px; padding-bottom: 8px; color: var(--lime); border-bottom: 1px solid var(--lime); }
.process-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line-dark); }
.process-slice { position: relative; min-height: 880px; background: var(--ink); }
.process-slice img { height: 62%; object-fit: cover; }
.process-slice--offset { padding-top: 120px; }
.process-slice--offset img { height: calc(62% - 120px); }
.process-slice__copy { padding: clamp(34px, 5vw, 74px); }
.process-slice h3 { max-width: 620px; margin: 20px 0; font-size: clamp(32px, 3.4vw, 54px); }
.treatment { display: grid; grid-template-columns: .72fr 1.4fr; min-height: 760px; border-top: 1px solid var(--line-dark); }
.treatment__copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(42px, 6vw, 96px); }
.treatment > img { height: 100%; object-fit: cover; }
.condition-list { margin: 42px 0 0; border-top: 1px solid var(--line-dark); }
.condition-list div { display: grid; grid-template-columns: 48px 1fr; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line-dark); }
.condition-list dt { color: var(--lime); }
.condition-list dd { margin: 0; color: rgba(255,255,255,.72); }

.products { padding: clamp(90px, 10vw, 160px) clamp(24px, 7vw, 118px); }
.products__intro { display: grid; grid-template-columns: .55fr 1.45fr .75fr; gap: 5vw; align-items: end; margin-bottom: 74px; }
.products__intro .eyebrow { color: var(--copper); align-self: start; }
.products__intro > p:last-child { margin: 0; color: rgba(21,27,29,.68); line-height: 1.8; }
.products__figure { margin: 0 0 90px; }
.products__figure img { aspect-ratio: 2.08 / 1; object-fit: cover; }
.products__figure figcaption { padding: 16px 0; border-bottom: 1px solid var(--line-light); color: rgba(21,27,29,.58); font-size: 12px; letter-spacing: .08em; }
.product-index { display: grid; grid-template-columns: .7fr 1.2fr .6fr; gap: 5vw; }
.product-index__heading { display: flex; flex-direction: column; gap: 12px; }
.product-index__heading span { color: var(--copper); font-size: 11px; letter-spacing: .18em; }
.product-index__heading strong { font-size: 30px; font-weight: 450; }
.product-index ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-light); }
.product-index li { display: grid; grid-template-columns: 48px 1fr; padding: 18px 0; border-bottom: 1px solid var(--line-light); font-size: 18px; }
.product-index li span { color: var(--copper); font-size: 11px; }
.product-index__secondary { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line-light); }
.product-index__secondary span { padding: 18px 0; border-bottom: 1px solid var(--line-light); }

.fabrication { position: relative; min-height: 900px; display: grid; align-items: end; color: var(--white); overflow: hidden; }
.fabrication > img, .fabrication__shade { position: absolute; inset: 0; height: 100%; object-fit: cover; }
.fabrication__shade { background: linear-gradient(90deg, rgba(15,19,20,.94) 0 44%, rgba(15,19,20,.22) 75%); }
.fabrication__copy { position: relative; z-index: 2; width: min(720px, 58vw); padding: clamp(60px, 8vw, 130px) clamp(24px, 7vw, 118px); }
.fabrication h2 { margin-bottom: 58px; }
.fabrication ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-dark); }
.fabrication li { display: grid; grid-template-columns: 46px 1fr; gap: 18px; padding: 17px 0; border-bottom: 1px solid var(--line-dark); }
.fabrication li > span { color: var(--lime); font-size: 11px; }
.fabrication li div { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; }
.fabrication li strong { font-weight: 520; }
.fabrication li small { color: rgba(255,255,255,.55); }

.project { display: grid; grid-template-columns: 1.18fr .82fr; min-height: 820px; }
.project__media { overflow: hidden; }
.project__media img { height: 100%; object-fit: cover; }
.project__copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(48px, 7vw, 110px); }
.project__copy .eyebrow { color: var(--ink); opacity: .55; }
.project__copy > p:not(.eyebrow):not(.boundary) { margin: 34px 0; font-size: 18px; line-height: 1.8; }
.project__note { display: grid; grid-template-columns: auto 1fr; gap: 30px; align-items: center; padding: 28px 0; border-top: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); }
.project__note span { font-size: clamp(52px, 6vw, 88px); font-weight: 250; letter-spacing: -.06em; }
.project__note p { margin: 0; line-height: 1.5; }
.boundary { margin-top: 28px; color: rgba(21,27,29,.58); font-size: 13px; line-height: 1.7; }

.about { display: grid; grid-template-columns: .45fr 1fr .65fr; gap: 5vw; padding: clamp(90px, 11vw, 170px) clamp(24px, 7vw, 118px); }
.about__label { display: flex; flex-direction: column; gap: 12px; color: var(--copper); font-size: 11px; letter-spacing: .18em; }
.about__label span:last-child { color: var(--ink); font-size: 18px; letter-spacing: 0; }
.about__copy p, .about__statement p { margin: 34px 0 0; color: rgba(21,27,29,.68); line-height: 1.85; }
.about__statement { align-self: end; padding-top: 24px; border-top: 1px solid var(--line-light); }

.contact { display: grid; grid-template-columns: .85fr 1fr; gap: 8vw; padding: clamp(90px, 11vw, 170px) clamp(24px, 7vw, 118px); }
.contact__intro > p:not(.eyebrow) { max-width: 620px; margin: 34px 0; color: rgba(255,255,255,.62); line-height: 1.8; }
.contact address { display: grid; gap: 12px; padding-top: 26px; border-top: 1px solid var(--line-dark); color: rgba(255,255,255,.76); font-style: normal; }
.contact address span { max-width: 480px; color: rgba(255,255,255,.5); }
.contact-form { align-self: end; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-form label { display: grid; gap: 10px; margin-bottom: 22px; color: rgba(255,255,255,.64); font-size: 13px; }
.contact-form input, .contact-form textarea { width: 100%; color: var(--white); background: transparent; border: 0; border-bottom: 1px solid var(--line-dark); border-radius: 0; padding: 14px 0; outline: none; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--lime); }
.contact-form .button { margin-top: 10px; }
.form-status { min-height: 24px; margin: 18px 0 0; color: var(--lime); font-size: 13px; }

.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 44px; align-items: center; padding: 52px clamp(24px, 7vw, 118px) 34px; color: var(--white); background: #0d1112; border-top: 1px solid var(--line-dark); }
.brand--footer { align-self: start; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 26px; color: rgba(255,255,255,.58); font-size: 13px; }
.site-footer__meta { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 24px; padding-top: 28px; border-top: 1px solid var(--line-dark); color: rgba(255,255,255,.38); font-size: 11px; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s ease, transform .75s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } }

@media (max-width: 1050px) {
  :root { --header-h: 72px; }
  .site-nav { position: fixed; inset: var(--header-h) 0 auto; display: grid; gap: 0; padding: 22px; background: rgba(21,27,29,.98); transform: translateY(-130%); transition: transform .28s ease; }
  .site-nav.open { transform: none; }
  .site-nav a { padding: 18px 8px; border-bottom: 1px solid var(--line-dark); }
  .site-nav .nav-contact { margin-top: 14px; text-align: center; border: 0; }
  .menu-toggle { display: block; }
  .section-head, .products__intro { grid-template-columns: .55fr 1.45fr; }
  .section-head > p:last-child, .products__intro > p:last-child { grid-column: 2; }
  .process-feature { grid-template-columns: 1.25fr .75fr; min-height: 650px; }
  .treatment { grid-template-columns: .8fr 1.2fr; }
  .product-index { grid-template-columns: .5fr 1fr; }
  .product-index__secondary { grid-column: 2; }
  .project { min-height: 680px; }
  .about { grid-template-columns: .35fr 1fr; }
  .about__statement { grid-column: 2; }
}

@media (max-width: 720px) {
  .brand__type small { display: none; }
  .brand__type strong { font-size: 13px; }
  .hero { min-height: 860px; }
  .hero__image { object-position: 62% center; }
  .hero__shade { background: linear-gradient(0deg, rgba(10,14,15,.96) 0%, rgba(10,14,15,.65) 62%, rgba(10,14,15,.25)); }
  .hero__pipe { left: 24px; }
  .hero__content { width: 100%; padding: 0 28px 166px 50px; }
  h1 { font-size: clamp(48px, 15vw, 70px); }
  .hero__lead { font-size: 16px; line-height: 1.65; }
  .hero__actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .hero__meta { left: 50px; right: 20px; bottom: 52px; flex-direction: column; gap: 6px; }
  .hero__meta span + span { padding-left: 0; border-left: 0; }
  .scroll-cue { display: none; }
  .section-head, .products__intro, .process-feature, .process-pair, .treatment, .product-index, .project, .about, .contact { grid-template-columns: 1fr; }
  .section-head, .products__intro { gap: 28px; }
  .section-head > p:last-child, .products__intro > p:last-child, .product-index__secondary, .about__statement { grid-column: auto; }
  .section-head h2, .products__intro h2, .project__copy h2, .about h2, .contact h2, .fabrication h2 { font-size: clamp(38px, 11vw, 56px); }
  .process-feature { min-height: 0; }
  .process-feature__media { height: 440px; }
  .process-feature__copy { border-left: 0; border-top: 1px solid var(--line-dark); }
  .process-slice, .process-slice--offset { min-height: 0; padding-top: 0; }
  .process-slice img, .process-slice--offset img { height: 440px; }
  .treatment__copy { order: 2; }
  .treatment > img { height: 440px; }
  .products { padding-top: 90px; }
  .products__figure img { aspect-ratio: 1.05 / 1; }
  .product-index { gap: 30px; }
  .fabrication { min-height: 960px; }
  .fabrication > img { object-position: 58% center; }
  .fabrication__shade { background: linear-gradient(0deg, rgba(15,19,20,.96) 0 58%, rgba(15,19,20,.28)); }
  .fabrication__copy { width: 100%; padding-bottom: 60px; }
  .fabrication li div { align-items: flex-start; flex-direction: column; gap: 5px; }
  .project__media { height: 440px; }
  .about, .contact { gap: 48px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer__links { justify-content: flex-start; }
  .site-footer__meta { grid-column: auto; flex-direction: column; }
}