:root {
  --ink: #080a0b;
  --graphite: #171b1d;
  --ivory: #f3efe7;
  --paper: #e8e1d4;
  --ember: #d65a2f;
  --ember-dark: #a43b1e;
  --copper: #b98a58;
  --steel: #9ca3a6;
  --line-dark: rgba(243, 239, 231, .18);
  --line-light: rgba(8, 10, 11, .18);
  --wrap: min(1240px, calc(100vw - 96px));
  --font-sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", SimSun, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--ivory); font-family: var(--font-sans); line-height: 1.65; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #f59d76; outline-offset: 4px; }
.wrap { width: var(--wrap); margin-inline: auto; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; padding: 10px 14px; background: var(--ivory); color: var(--ink); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; inset: 0 0 auto 0; z-index: 50; display: flex; align-items: center; justify-content: space-between; min-height: 82px; padding: 14px max(28px, calc((100vw - 1440px) / 2 + 32px)); border-bottom: 1px solid var(--line-dark); background: rgba(8, 10, 11, .78); backdrop-filter: blur(14px); transition: background .25s ease, min-height .25s ease; }
.site-header.is-scrolled { min-height: 70px; background: rgba(8, 10, 11, .94); }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; }
.brand-mark { width: 40px; height: 40px; fill: none; stroke: var(--ember); stroke-width: 2.2; stroke-linejoin: bevel; }
.brand-copy { display: grid; gap: 2px; }
.brand-copy strong { font-size: 15px; letter-spacing: .04em; }
.brand-copy small { color: rgba(243,239,231,.56); font-size: 8px; letter-spacing: .13em; }
.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.2vw, 38px); }
.site-nav a, .site-footer nav a { position: relative; min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; color: rgba(243,239,231,.74); }
.site-nav a::after, .site-footer nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 5px; height: 1px; background: var(--ember); transition: right .25s ease; }
.site-nav a:hover, .site-nav a:focus-visible, .site-footer nav a:hover, .site-footer nav a:focus-visible { color: var(--ivory); }
.site-nav a:hover::after, .site-nav a:focus-visible::after, .site-footer nav a:hover::after, .site-footer nav a:focus-visible::after { right: 0; }
.menu-toggle { display: none; min-width: 48px; min-height: 48px; border: 1px solid var(--line-dark); background: transparent; color: var(--ivory); cursor: pointer; }
.menu-toggle-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.menu-icon { display: grid; gap: 7px; width: 22px; margin: auto; }
.menu-icon i { display: block; height: 1px; background: currentColor; transition: transform .25s ease; }
.menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-4px) rotate(-45deg); }

.hero { position: relative; min-height: 100svh; overflow: hidden; isolation: isolate; }
.hero-media { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-shade { position: absolute; inset: 0; z-index: -2; background: linear-gradient(90deg, rgba(8,10,11,.93) 0%, rgba(8,10,11,.73) 44%, rgba(8,10,11,.14) 78%), linear-gradient(0deg, rgba(8,10,11,.86) 0%, transparent 45%); }
.hero::after { content: ""; position: absolute; inset: 82px 4vw 0 auto; width: 1px; background: var(--line-dark); }
.hero-content { min-height: 100svh; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding-top: 128px; padding-bottom: 108px; }
.eyebrow { display: flex; flex-wrap: wrap; gap: 12px 26px; margin: 0 0 28px; color: rgba(243,239,231,.72); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow span { position: relative; }
.eyebrow span:not(:last-child)::after { content: "/"; position: absolute; right: -17px; color: var(--ember); }
.hero h1 { margin: 0; font-family: var(--font-serif); font-size: clamp(76px, 11.5vw, 178px); font-weight: 900; line-height: .88; letter-spacing: -.08em; text-shadow: 0 8px 42px rgba(0,0,0,.25); }
.hero h1 em { color: var(--ember); font-style: normal; }
.hero-lead { max-width: 670px; margin: 34px 0 0; color: rgba(243,239,231,.82); font-size: clamp(18px, 1.5vw, 24px); letter-spacing: .03em; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 46px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; padding: 12px 24px; font-weight: 700; cursor: pointer; border-radius: 0; }
.button-primary { background: var(--ember); color: var(--ink); }
.button-primary:hover { background: #e56a3f; }
.text-link { display: inline-flex; align-items: center; gap: 18px; min-height: 44px; border-bottom: 1px solid currentColor; color: inherit; font-weight: 600; }
.text-link span { color: var(--ember); }
.hero-index { position: absolute; right: calc(4vw - 7px); top: 50%; display: grid; justify-items: center; gap: 10px; transform: translateY(-40%); color: rgba(243,239,231,.64); font-size: 10px; letter-spacing: .18em; writing-mode: vertical-rl; }
.hero-index i { width: 1px; height: 84px; background: linear-gradient(var(--ember), var(--line-dark)); }

.identity { background: var(--ink); padding: 132px 0; }
.identity-grid { display: grid; grid-template-columns: 160px minmax(0, 1.2fr) minmax(280px, .7fr); gap: 64px; align-items: start; }
.section-kicker { display: flex; gap: 14px; align-items: center; color: rgba(243,239,231,.62); font-size: 12px; letter-spacing: .16em; }
.section-kicker span:first-child { color: var(--ember); font: 700 12px/1 var(--font-sans); }
.section-kicker::after { content: ""; width: 34px; height: 1px; background: currentColor; opacity: .55; }
.section-kicker-dark { color: rgba(8,10,11,.68); }
.section-kicker-dark span:first-child { color: var(--ember-dark); }
.identity h2, .material h2, .development h2, .contact h2 { margin: -12px 0 28px; font-family: var(--font-serif); font-size: clamp(42px, 5.1vw, 76px); line-height: 1.12; letter-spacing: -.05em; }
.identity-copy p { max-width: 640px; margin: 0; color: rgba(243,239,231,.66); font-size: 18px; }
.identity-facts { margin: 0; border-top: 1px solid var(--line-dark); }
.identity-facts div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line-dark); }
.identity-facts dt { color: rgba(243,239,231,.52); font-size: 12px; letter-spacing: .12em; }
.identity-facts dd { margin: 0; font-size: 15px; }

.material { background: var(--ivory); color: var(--ink); padding-top: 132px; }
.material-heading { display: grid; grid-template-columns: 160px minmax(0, 1fr) minmax(260px, .62fr); gap: 64px; align-items: start; padding-bottom: 72px; }
.material-heading p { margin: 8px 0 0; color: rgba(8,10,11,.66); font-size: 17px; }
.material-stage { position: relative; width: min(1440px, 94vw); margin: 0 auto; overflow: hidden; }
.material-stage img { width: 100%; height: min(66vw, 780px); object-fit: cover; }
.material-stage figcaption { position: absolute; right: 0; bottom: 0; display: grid; gap: 6px; min-width: 300px; padding: 22px 28px; background: var(--ivory); border-left: 1px solid var(--line-light); }
.material-stage figcaption span { color: rgba(8,10,11,.64); font-size: 10px; letter-spacing: .18em; }
.material-stage figcaption strong { font-family: var(--font-serif); font-size: 24px; }
.material-flow { position: relative; margin-top: 88px; overflow: hidden; background: var(--ink); }
.material-flow img { width: 100%; height: clamp(360px, 54vw, 720px); object-fit: cover; }
.material-flow-copy { position: absolute; inset: auto 0 28px; display: flex; align-items: center; justify-content: center; gap: 20px; color: rgba(243,239,231,.8); font-size: 12px; letter-spacing: .2em; }
.material-flow-copy i { width: 68px; height: 1px; background: rgba(243,239,231,.38); }

.process { background: var(--ink); }
.process-chambers { position: relative; min-height: 760px; overflow: hidden; }
.process-chambers img { width: 100%; min-height: 760px; object-fit: cover; filter: brightness(.62); }
.process-chambers::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,10,11,.95) 0%, rgba(8,10,11,.68) 44%, rgba(8,10,11,.08) 78%), linear-gradient(0deg, var(--ink), transparent 25%); }
.process-chambers-copy { position: absolute; inset: 0; z-index: 1; display: grid; align-content: center; grid-template-columns: 160px minmax(0, 610px); gap: 64px; }
.process-chambers-copy h2 { margin: -12px 0 28px; font-family: var(--font-serif); font-size: clamp(44px, 5.4vw, 80px); line-height: 1.1; letter-spacing: -.05em; }
.process-chambers-copy p { grid-column: 2; max-width: 580px; margin: 0; color: rgba(243,239,231,.68); font-size: 17px; }
.digital { display: grid; grid-template-columns: .72fr 1.35fr; gap: 76px; align-items: center; padding: 92px 0 132px; }
.micro-label { margin: 0 0 20px; color: var(--ember); font-size: 11px; font-weight: 700; letter-spacing: .2em; }
.digital-copy h3, .planning-copy h3, .green-copy h3 { margin: 0 0 24px; font-family: var(--font-serif); font-size: clamp(34px, 4vw, 58px); line-height: 1.15; letter-spacing: -.04em; }
.digital-copy > p:not(.micro-label) { color: rgba(243,239,231,.66); font-size: 17px; }
.digital-copy .text-link { margin-top: 20px; }
.digital-visual { margin: 0; }
.digital-visual img { width: 100%; min-height: 430px; object-fit: cover; }
.digital-visual figcaption, .planning-visual figcaption { margin-top: 12px; color: rgba(243,239,231,.56); font-size: 11px; letter-spacing: .12em; }

.development { background: var(--ivory); color: var(--ink); padding: 132px 0 0; }
.development-intro { display: grid; grid-template-columns: 160px 1fr; gap: 64px; }
.timeline { margin-top: 64px; border-top: 1px solid var(--line-light); }
.timeline article { display: grid; grid-template-columns: 220px 1fr; gap: 58px; padding: 38px 0; border-bottom: 1px solid var(--line-light); }
.timeline time { color: var(--ember-dark); font-family: Georgia, serif; font-size: 44px; line-height: 1; }
.timeline h3 { margin: 0 0 8px; font-family: var(--font-serif); font-size: 25px; }
.timeline p { max-width: 680px; margin: 0; color: rgba(8,10,11,.62); }
.planning { display: grid; grid-template-columns: 1.3fr .72fr; gap: 72px; align-items: center; padding: 132px 0; }
.planning-visual { margin: 0; }
.planning-visual img { min-height: 470px; object-fit: cover; }
.planning-visual figcaption { color: rgba(8,10,11,.64); }
.planning-copy .micro-label, .green-copy .micro-label { color: var(--ember-dark); }
.planning-copy p:not(.micro-label) { color: rgba(8,10,11,.65); }
.boundary-note { padding-top: 18px; border-top: 1px solid var(--line-light); font-size: 13px; }
.green { display: grid; grid-template-columns: .72fr 1.28fr; gap: 72px; align-items: center; padding: 132px 0; border-top: 1px solid var(--line-light); }
.green-copy p:not(.micro-label) { color: rgba(8,10,11,.65); }
.green-visual { margin: 0; }
.green-visual img { width: 100%; min-height: 480px; object-fit: cover; }

.contact { position: relative; min-height: 900px; overflow: hidden; isolation: isolate; }
.contact-media { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; object-fit: cover; }
.contact-overlay { position: absolute; inset: 0; z-index: -2; background: linear-gradient(90deg, rgba(8,10,11,.96) 0%, rgba(8,10,11,.86) 48%, rgba(8,10,11,.48) 100%), linear-gradient(0deg, rgba(8,10,11,.88), transparent 55%); }
.contact-content { min-height: 900px; display: grid; grid-template-columns: .78fr 1fr; gap: 90px; align-items: center; padding: 120px 0; }
.contact-copy > p { max-width: 520px; color: rgba(243,239,231,.68); font-size: 17px; }
.contact-copy address { display: grid; gap: 8px; margin-top: 42px; font-style: normal; }
.contact-copy address span { color: var(--ember); font-size: 11px; font-weight: 700; letter-spacing: .18em; }
.inquiry-form { padding: 38px; border: 1px solid var(--line-dark); background: rgba(8,10,11,.72); backdrop-filter: blur(12px); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.inquiry-form label { display: grid; gap: 8px; margin-bottom: 18px; color: rgba(243,239,231,.65); font-size: 12px; letter-spacing: .08em; }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea { width: 100%; min-height: 48px; border: 0; border-bottom: 1px solid rgba(243,239,231,.34); border-radius: 0; padding: 12px 2px; background: transparent; color: var(--ivory); }
.inquiry-form select { color-scheme: dark; }
.inquiry-form textarea { min-height: 112px; resize: vertical; }
.inquiry-form input:focus, .inquiry-form select:focus, .inquiry-form textarea:focus { outline: 0; border-bottom-color: #f59d76; box-shadow: 0 2px 0 #f59d76; }
.form-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 24px; }
.form-status { min-height: 48px; margin: 0; color: #ffd4c3; font-size: 13px; }
.form-footer .button { flex: 0 0 auto; }

.site-footer { border-top: 1px solid var(--line-dark); background: var(--ink); }
.footer-main { display: flex; align-items: center; justify-content: space-between; gap: 44px; padding: 46px 0; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 12px 30px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 18px 0 28px; border-top: 1px solid var(--line-dark); color: rgba(243,239,231,.56); font-size: 11px; }

@media (max-width: 1020px) {
  :root { --wrap: min(100% - 56px, 920px); }
  .site-header { padding-inline: 28px; }
  .identity-grid, .material-heading { grid-template-columns: 120px 1fr; gap: 42px; }
  .identity-facts, .material-heading > p { grid-column: 2; }
  .process-chambers-copy { grid-template-columns: 120px 1fr; gap: 42px; }
  .digital, .planning, .green, .contact-content { gap: 48px; }
  .development-intro { grid-template-columns: 120px 1fr; gap: 42px; }
}

@media (max-width: 780px) {
  :root { --wrap: calc(100vw - 40px); }
  .site-header { min-height: 70px; padding: 10px 20px; backdrop-filter: none; }
  .site-header .brand-copy small { display: none; }
  .site-header .brand-copy strong { max-width: 180px; font-size: 13px; }
  .menu-toggle { display: block; }
  .site-nav { position: fixed; inset: 70px 0 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 28px 20px 50px; background: rgba(8,10,11,.98); visibility: hidden; opacity: 0; transform: translateY(-12px); pointer-events: none; transition: opacity .22s ease, transform .22s ease, visibility .22s; }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: translateY(0); pointer-events: auto; }
  .site-nav a { min-height: 64px; border-bottom: 1px solid var(--line-dark); font-family: var(--font-serif); font-size: 24px; }
  .hero::after, .hero-index { display: none; }
  .hero-content { padding-top: 118px; padding-bottom: 70px; }
  .hero-media { object-position: 62% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(8,10,11,.94), rgba(8,10,11,.5)), linear-gradient(0deg, rgba(8,10,11,.95), transparent 62%); }
  .hero h1 { font-size: clamp(72px, 24vw, 116px); }
  .hero-lead { max-width: 460px; font-size: 17px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; margin-top: 38px; }
  .identity, .material, .development { padding-top: 88px; }
  .identity { padding-bottom: 88px; }
  .identity-grid, .material-heading, .development-intro, .process-chambers-copy { grid-template-columns: 1fr; gap: 30px; }
  .identity-facts, .material-heading > p, .process-chambers-copy p { grid-column: auto; }
  .identity h2, .material h2, .development h2, .contact h2 { margin-top: 0; font-size: clamp(40px, 12vw, 58px); }
  .material-heading { padding-bottom: 46px; }
  .material-stage { width: 100%; }
  .material-stage img { height: 72vw; min-height: 330px; }
  .material-stage figcaption { min-width: 0; padding: 16px 20px; }
  .material-flow { margin-top: 58px; }
  .material-flow img { height: 430px; object-position: 58% center; }
  .material-flow-copy { gap: 12px; }
  .material-flow-copy i { width: 34px; }
  .process-chambers, .process-chambers img { min-height: 680px; }
  .process-chambers-copy { align-content: end; padding-bottom: 72px; }
  .process-chambers-copy h2 { margin: 0; font-size: clamp(42px, 12vw, 64px); }
  .digital, .planning, .green, .contact-content { grid-template-columns: 1fr; }
  .digital { padding: 74px 0 88px; }
  .digital-visual { order: -1; }
  .digital-visual img, .planning-visual img, .green-visual img { min-height: 300px; }
  .timeline { margin-top: 46px; }
  .timeline article { grid-template-columns: 84px 1fr; gap: 22px; }
  .timeline time { font-size: 28px; }
  .planning, .green { padding: 86px 0; }
  .green-visual { order: -1; }
  .contact, .contact-content { min-height: auto; }
  .contact-content { padding: 92px 0; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .inquiry-form { padding: 24px 20px; }
  .form-footer { align-items: stretch; flex-direction: column; }
  .form-footer .button { width: 100%; }
  .footer-main { align-items: flex-start; flex-direction: column; }
  .site-footer nav { display: grid; grid-template-columns: repeat(2, 1fr); width: 100%; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

@media (max-width: 420px) {
  .brand-mark { width: 36px; height: 36px; }
  .site-header .brand-copy strong { max-width: 160px; font-size: 12px; }
  .hero h1 { font-size: 72px; }
  .eyebrow { gap: 10px 20px; letter-spacing: .11em; }
  .eyebrow span:not(:last-child)::after { right: -13px; }
  .identity-facts div { grid-template-columns: 84px 1fr; }
  .timeline article { grid-template-columns: 1fr; }
}

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