:root {
  --ink: #171814;
  --ink-soft: #22231e;
  --paper: #e9ebdf;
  --paper-bright: #f4f6e9;
  --muted: #8a8d80;
  --line: rgba(23, 24, 20, 0.18);
  --acid: #c9ff36;
  --acid-dark: #a8dc20;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Heiti SC", sans-serif;
  --shell: min(1240px, calc(100vw - 96px));
  --header-height: 82px;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }

::selection { background: var(--acid); color: var(--ink); }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  background: var(--acid);
  color: var(--ink);
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus { transform: translateY(0); }

:focus-visible { outline: 3px solid var(--acid); outline-offset: 4px; }

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  padding: 0 max(48px, calc((100vw - 1440px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--paper-bright);
  border-bottom: 1px solid rgba(255,255,255,.13);
  transition: background 260ms ease, height 260ms ease, color 260ms ease, box-shadow 260ms ease;
}

.site-header.is-scrolled {
  height: 68px;
  color: var(--ink);
  background: rgba(233, 235, 223, .93);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px rgba(18,20,14,.07);
  backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 13px; font-size: 17px; font-weight: 700; letter-spacing: .06em; }

.brand-mark { position: relative; width: 29px; height: 29px; display: inline-block; transform: rotate(-6deg); }
.brand-mark::before, .brand-mark::after, .brand-mark i, .brand-mark b { content: ""; position: absolute; display: block; background: var(--acid); }
.brand-mark::before { inset: 1px 15px 15px 1px; }
.brand-mark::after { inset: 15px 1px 1px 15px; }
.brand-mark i { width: 8px; height: 21px; left: 17px; top: 0; transform: skew(-28deg); }
.brand-mark b { width: 8px; height: 21px; left: 4px; top: 8px; transform: skew(-28deg); }

.site-nav { display: flex; align-items: center; gap: 32px; font-size: 14px; }
.site-nav > a:not(.nav-cta) { position: relative; padding: 10px 0; color: inherit; opacity: .82; }
.site-nav > a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; bottom: 4px; width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform 220ms ease; }
.site-nav > a:not(.nav-cta):hover::after, .site-nav > a:not(.nav-cta):focus-visible::after { transform: scaleX(1); transform-origin: left; }

.nav-cta { min-height: 42px; padding: 0 17px; display: inline-flex; align-items: center; gap: 28px; background: var(--acid); color: var(--ink); font-weight: 700; }
.nav-cta span { font-size: 18px; }

.menu-toggle { display: none; background: none; border: 0; padding: 10px 0; cursor: pointer; }

.hero {
  position: relative;
  min-height: 780px;
  height: min(920px, 100svh);
  padding: var(--header-height) max(48px, calc((100vw - 1440px) / 2)) 58px;
  display: grid;
  grid-template-columns: minmax(520px, 1.03fr) minmax(440px, .97fr);
  align-items: center;
  gap: 40px;
  color: var(--paper-bright);
  background: var(--ink);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.042) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.042) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: linear-gradient(to right, black, transparent 76%);
}

.hero-noise { position: absolute; inset: 0; opacity: .22; pointer-events: none; background: radial-gradient(circle at 9% 20%, rgba(201,255,54,.07), transparent 28%), radial-gradient(circle at 80% 65%, rgba(255,255,255,.05), transparent 30%); }

.hero-copy { position: relative; z-index: 2; padding-top: 40px; }
.eyebrow { margin: 0 0 30px; display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; font-weight: 700; letter-spacing: .18em; }
.hero .eyebrow, .contact .eyebrow { color: rgba(244,246,233,.6); }
.eyebrow span { width: 28px; height: 2px; background: var(--acid); }

.hero h1, .contact h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(58px, 6.5vw, 104px);
  font-weight: 600;
  line-height: .98;
  letter-spacing: -.075em;
}

.hero h1 em, .contact h2 em { color: var(--acid); font-style: normal; }
.hero-intro { max-width: 620px; margin: 36px 0 0 5px; color: rgba(244,246,233,.68); font-size: 17px; line-height: 1.9; }
.hero-actions { margin-top: 42px; display: flex; align-items: center; gap: 32px; }

.button { min-height: 54px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: space-between; gap: 52px; border: 1px solid transparent; font-size: 14px; font-weight: 700; transition: transform 180ms ease, background 180ms ease; }
.button:hover { transform: translateY(-3px); }
.button--accent { background: var(--acid); color: var(--ink); }
.button--accent:hover { background: #d8ff6d; }
.button span { font-size: 18px; }
.text-link { display: inline-flex; align-items: center; gap: 24px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.35); font-size: 14px; font-weight: 700; }
.text-link span { font-size: 20px; transition: transform 180ms ease; }
.text-link:hover span { transform: translateX(6px); }
.text-link--dark { border-bottom-color: var(--line); }

.hero-poster { position: relative; z-index: 2; justify-self: end; width: min(39vw, 570px); aspect-ratio: .93; perspective: 1000px; --px: 0; --py: 0; }
[data-depth] { transform: translate3d(var(--tx, 0), var(--ty, 0), 0); transition: transform 500ms cubic-bezier(.2,.75,.25,1); }
.poster-card { position: absolute; box-shadow: 0 26px 80px rgba(0,0,0,.25); }
.poster-card--back { --depth: .35; inset: 9% 5% 6% 17%; display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-end; gap: 5px; padding: 28px 18px; color: rgba(244,246,233,.48); border: 1px solid rgba(255,255,255,.13); background: #242620; font-family: var(--serif); font-size: 12px; letter-spacing: .35em; transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(7deg); }
.poster-card--back::before { content: ""; position: absolute; left: 19%; top: 0; width: 1px; height: 100%; background: rgba(255,255,255,.08); }
.poster-card--main { --depth: 1.15; inset: 14% 14% 12% 5%; padding: 27px; color: var(--ink); background: var(--paper-bright); transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(-5deg); overflow: hidden; }
.poster-card--main::before { content: ""; position: absolute; width: 68%; aspect-ratio: 1; right: -25%; top: 18%; border: 1px solid rgba(23,24,20,.2); border-radius: 50%; box-shadow: 0 0 0 34px rgba(23,24,20,.025), 0 0 0 68px rgba(23,24,20,.025); }
.poster-meta { display: flex; justify-content: space-between; font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.poster-meta b { font-weight: 500; }
.poster-glyph { position: absolute; left: 18px; bottom: 9%; font-family: var(--serif); font-size: clamp(180px, 21vw, 330px); font-weight: 700; line-height: .76; letter-spacing: -.16em; }
.poster-line { position: absolute; left: 0; top: 24%; width: 68%; height: 14px; background: var(--acid); mix-blend-mode: multiply; }
.poster-note { position: absolute; right: 26px; bottom: 23px; font-family: var(--serif); font-size: 13px; line-height: 1.65; text-align: right; }
.poster-chip { position: absolute; z-index: 3; padding: 11px 15px; color: var(--ink); background: var(--acid); box-shadow: 8px 10px 28px rgba(0,0,0,.25); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.poster-chip--top { --depth: 1.6; top: 8%; right: 2%; transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(5deg); }
.poster-chip--bottom { --depth: 1.9; bottom: 8%; left: 0; color: var(--paper-bright); background: var(--ink-soft); border: 1px solid rgba(255,255,255,.2); transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(-3deg); }
.poster-orbit { position: absolute; border: 1px solid rgba(201,255,54,.25); border-radius: 50%; }
.poster-orbit--one { --depth: .5; width: 42%; aspect-ratio: 1; right: -6%; top: -1%; }
.poster-orbit--two { --depth: .9; width: 22%; aspect-ratio: 1; left: -7%; bottom: 3%; }

.hero-index { position: absolute; z-index: 2; left: max(48px, calc((100vw - 1440px) / 2)); bottom: 30px; display: flex; align-items: center; gap: 10px; color: rgba(244,246,233,.4); font-size: 10px; }
.hero-index i { display: block; width: 68px; height: 1px; background: rgba(244,246,233,.2); }

.principle-strip { overflow: hidden; color: var(--ink); background: var(--acid); border-top: 1px solid rgba(23,24,20,.25); border-bottom: 1px solid rgba(23,24,20,.25); }
.principle-strip__track { width: max-content; min-width: 100%; min-height: 58px; padding: 0 4vw; display: flex; align-items: center; justify-content: space-around; gap: 50px; font-family: var(--serif); font-size: 15px; font-weight: 700; letter-spacing: .08em; }
.principle-strip i { width: 5px; height: 5px; background: var(--ink); transform: rotate(45deg); }

.section-shell { width: var(--shell); margin: 0 auto; }
.section-kicker { margin: 0; display: flex; align-items: center; justify-content: space-between; color: #63665d; font-size: 11px; font-weight: 800; letter-spacing: .16em; }
.section-kicker b { color: inherit; font-size: 10px; font-weight: 500; }

.statement { padding: 145px 0 160px; display: grid; grid-template-columns: 240px 1fr; gap: 50px; border-bottom: 1px solid var(--line); }
.statement-body h2, .section-heading h2, .method h2, .collaboration h2, .faq h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(44px, 5.2vw, 76px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -.06em;
}
.statement-body h2 span { position: relative; white-space: nowrap; }
.statement-body h2 span::after { content: ""; position: absolute; z-index: -1; left: -2%; bottom: 8%; width: 104%; height: 15%; background: var(--acid); }
.statement-body > p { max-width: 660px; margin: 54px 0 0 auto; padding-left: 50px; border-left: 1px solid var(--line); color: #5a5d54; font-size: 16px; line-height: 2; }

.services { padding: 124px 0 150px; }
.section-heading { display: grid; grid-template-columns: 1.2fr .8fr; gap: 70px; align-items: end; }
.section-heading .section-kicker { margin-bottom: 32px; }
.section-heading h2 { font-size: clamp(52px, 6vw, 86px); }
.section-heading > p { max-width: 470px; margin: 0 0 8px; color: #5a5d54; font-size: 15px; line-height: 1.9; }

.service-grid { margin-top: 80px; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { min-height: 400px; padding: 32px 34px; display: flex; flex-direction: column; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(244,246,233,.2); transition: background 240ms ease, transform 240ms ease, box-shadow 240ms ease; }
.service-card:hover { position: relative; z-index: 2; background: var(--paper-bright); transform: translateY(-5px); box-shadow: 0 24px 60px rgba(21,22,18,.09); }
.service-card--accent { background: var(--acid); }
.service-card--accent:hover { background: #d7ff69; }
.service-card__top { display: flex; justify-content: space-between; color: #73766c; font-size: 11px; }
.service-card__top i { color: var(--ink); font-size: 22px; font-style: normal; }
.service-card h3 { max-width: 370px; margin: 74px 0 18px; font-family: var(--serif); font-size: 36px; font-weight: 600; letter-spacing: -.04em; }
.service-card p { max-width: 460px; margin: 0; color: #5d6057; font-size: 14px; line-height: 1.85; }
.service-card ul { margin: auto 0 0; padding: 26px 0 0; display: flex; gap: 10px; list-style: none; border-top: 1px solid rgba(23,24,20,.15); }
.service-card li { padding: 7px 11px; border: 1px solid rgba(23,24,20,.23); border-radius: 30px; font-size: 11px; }

.scenarios { padding: 130px 0 145px; color: var(--paper-bright); background: var(--ink); }
.section-heading--light .section-kicker, .scenarios .section-kicker { color: rgba(244,246,233,.5); }
.section-heading--light > p { color: rgba(244,246,233,.6); }
.scenario-layout { margin-top: 82px; display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: stretch; }
.scenario-tabs { display: flex; flex-direction: column; border-top: 1px solid rgba(255,255,255,.16); }
.scenario-tabs button { width: 100%; min-height: 78px; padding: 0 10px 0 0; display: grid; grid-template-columns: 52px 1fr auto; align-items: center; color: rgba(244,246,233,.55); background: transparent; border: 0; border-bottom: 1px solid rgba(255,255,255,.16); cursor: pointer; text-align: left; transition: color 180ms ease, padding 180ms ease; }
.scenario-tabs button:hover { color: var(--paper-bright); padding-left: 8px; }
.scenario-tabs button[aria-selected="true"] { color: var(--acid); }
.scenario-tabs button span { font-size: 10px; }
.scenario-tabs button b { font-family: var(--serif); font-size: 19px; font-weight: 500; }
.scenario-tabs button i { font-size: 19px; font-style: normal; }
.scenario-panel { position: relative; min-height: 470px; padding: 52px; display: flex; flex-direction: column; justify-content: flex-end; color: var(--ink); background: var(--acid); overflow: hidden; }
.scenario-panel::before { content: ""; position: absolute; width: 320px; aspect-ratio: 1; right: -100px; top: -100px; border: 1px solid rgba(23,24,20,.17); border-radius: 50%; box-shadow: 0 0 0 35px rgba(23,24,20,.03), 0 0 0 70px rgba(23,24,20,.03); }
.scenario-panel__number { position: absolute; top: 14px; right: 28px; font-family: var(--serif); font-size: 138px; line-height: 1; opacity: .11; }
.scenario-panel__label { position: absolute; top: 48px; left: 52px; margin: 0; font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.scenario-panel h3 { position: relative; max-width: 540px; margin: 0 0 20px; font-family: var(--serif); font-size: clamp(32px, 4vw, 52px); font-weight: 600; line-height: 1.2; letter-spacing: -.05em; }
.scenario-panel > p:not(.scenario-panel__label) { position: relative; max-width: 570px; margin: 0; color: rgba(23,24,20,.68); font-size: 14px; line-height: 1.9; }
.scenario-panel__tags { position: relative; margin-top: 30px; display: flex; flex-wrap: wrap; gap: 8px; }
.scenario-panel__tags span { padding: 7px 11px; border: 1px solid rgba(23,24,20,.25); border-radius: 30px; font-size: 11px; }
.scenario-panel.is-changing > * { animation: panel-in 360ms ease both; }
@keyframes panel-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.method { padding: 140px 0 155px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 110px; }
.method-intro { align-self: start; position: sticky; top: 120px; }
.method-intro .section-kicker { margin-bottom: 32px; }
.method-intro > p:not(.section-kicker) { max-width: 430px; margin: 32px 0; color: #5a5d54; font-size: 15px; line-height: 1.9; }
.method-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.method-steps li { min-height: 190px; padding: 38px 0; display: grid; grid-template-columns: 90px 1fr; border-bottom: 1px solid var(--line); }
.method-steps > li > span { color: #777a70; font-size: 11px; }
.method-steps h3 { margin: 0 0 17px; font-family: var(--serif); font-size: 31px; font-weight: 600; }
.method-steps p { max-width: 520px; margin: 0; color: #5a5d54; font-size: 14px; line-height: 1.85; }

.collaboration { min-height: 760px; display: grid; grid-template-columns: 1fr 1fr; color: var(--paper-bright); background: var(--ink); }
.collaboration-art { position: relative; min-height: 700px; background: #20211c; overflow: hidden; --px: 0; --py: 0; }
.collaboration-art::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px); background-size: 72px 72px; }
.collaboration-art__frame { --depth: .5; position: absolute; inset: 13% 14%; border: 1px solid rgba(255,255,255,.18); transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(-7deg); }
.collaboration-art__frame::before, .collaboration-art__frame::after { content: ""; position: absolute; background: var(--acid); }
.collaboration-art__frame::before { width: 16px; height: 16px; top: -8px; left: -8px; }
.collaboration-art__frame::after { width: 16px; height: 16px; right: -8px; bottom: -8px; }
.collaboration-art__disc { --depth: 1.1; position: absolute; width: 50%; aspect-ratio: 1; left: 25%; top: 25%; border-radius: 50%; background: var(--acid); box-shadow: 0 0 0 34px rgba(201,255,54,.07), 0 0 0 68px rgba(201,255,54,.035); }
.collaboration-art__mark { --depth: .8; position: absolute; z-index: 2; left: 50%; top: 50%; font-family: var(--serif); font-size: clamp(180px, 22vw, 340px); font-weight: 700; line-height: 1; color: var(--ink); transform: translate(calc(-50% + var(--tx, 0px)), calc(-50% + var(--ty, 0px))); }
.collaboration-art__label { --depth: 1.6; position: absolute; z-index: 3; right: 10%; top: 18%; padding: 11px 16px; color: var(--paper-bright); background: var(--ink); border: 1px solid rgba(255,255,255,.28); font-size: 11px; font-weight: 800; letter-spacing: .15em; transform: translate3d(var(--tx, 0), var(--ty, 0), 0) rotate(5deg); }
.collaboration-copy { padding: 110px clamp(48px, 7vw, 120px); display: flex; flex-direction: column; justify-content: center; }
.collaboration-copy .section-kicker { margin-bottom: 35px; color: rgba(244,246,233,.5); }
.collaboration-points { margin-top: 65px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.collaboration-points article { padding-top: 18px; border-top: 1px solid rgba(255,255,255,.18); }
.collaboration-points span { color: var(--acid); font-size: 10px; letter-spacing: .12em; }
.collaboration-points h3 { margin: 20px 0 10px; font-family: var(--serif); font-size: 17px; font-weight: 600; }
.collaboration-points p { margin: 0; color: rgba(244,246,233,.52); font-size: 12px; line-height: 1.7; }

.faq { padding: 140px 0 150px; display: grid; grid-template-columns: .75fr 1.25fr; gap: 110px; }
.faq-intro .section-kicker { margin-bottom: 32px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 104px; padding: 18px 5px; display: flex; align-items: center; justify-content: space-between; gap: 30px; cursor: pointer; list-style: none; font-family: var(--serif); font-size: 20px; font-weight: 600; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary i { position: relative; flex: 0 0 22px; width: 22px; height: 22px; }
.faq-list summary i::before, .faq-list summary i::after { content: ""; position: absolute; top: 10px; left: 2px; width: 18px; height: 1px; background: currentColor; transition: transform 180ms ease; }
.faq-list summary i::after { transform: rotate(90deg); }
.faq-list details[open] summary i::after { transform: rotate(0); }
.faq-list details[open] summary { color: #4b4e46; }
.faq-list details > p { max-width: 650px; margin: -8px 0 32px; color: #5a5d54; font-size: 14px; line-height: 1.9; }

.contact { position: relative; min-height: 710px; padding: 115px max(48px, calc((100vw - 1440px) / 2)) 58px; display: grid; grid-template-columns: 1.1fr .9fr; grid-template-rows: 1fr auto; gap: 70px; color: var(--paper-bright); background: var(--ink); overflow: hidden; }
.contact::before { content: ""; position: absolute; width: 550px; aspect-ratio: 1; right: -210px; bottom: -270px; border: 1px solid rgba(201,255,54,.18); border-radius: 50%; box-shadow: 0 0 0 50px rgba(201,255,54,.025), 0 0 0 100px rgba(201,255,54,.018); }
.contact-grid { position: absolute; inset: 0; opacity: .45; background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size: 84px 84px; mask-image: linear-gradient(90deg, black, transparent 72%); }
.contact-main, .contact-card, .contact-company { position: relative; z-index: 2; }
.contact-main > p:not(.eyebrow) { max-width: 670px; margin: 36px 0 0; color: rgba(244,246,233,.6); font-size: 15px; line-height: 1.9; }
.contact-card { align-self: end; padding: 32px; border: 1px solid rgba(255,255,255,.18); background: rgba(34,35,30,.75); box-shadow: 0 24px 60px rgba(0,0,0,.18); }
.contact-card > p { margin: 0 0 22px; color: rgba(244,246,233,.52); font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.contact-card ul { margin: 0 0 32px; padding: 0; list-style: none; }
.contact-card li { padding: 13px 0; display: flex; gap: 20px; border-bottom: 1px solid rgba(255,255,255,.11); font-family: var(--serif); font-size: 15px; }
.contact-card li span { color: var(--acid); font-family: var(--sans); font-size: 10px; }
.contact-card .button { width: 100%; }
.contact-company { grid-column: 1 / -1; padding-top: 30px; border-top: 1px solid rgba(255,255,255,.16); color: rgba(244,246,233,.55); font-family: var(--serif); font-size: 14px; letter-spacing: .08em; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 680ms ease, transform 680ms cubic-bezier(.2,.75,.25,1); }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1100px) {
  :root { --shell: min(100% - 64px, 1040px); }
  .site-header { padding-inline: 32px; }
  .hero { min-height: 740px; padding-inline: 32px; grid-template-columns: 1.05fr .95fr; }
  .hero-poster { width: 42vw; }
  .hero h1 { font-size: clamp(55px, 7.3vw, 82px); }
  .hero-index { left: 32px; }
  .scenario-layout { gap: 48px; }
  .method { gap: 70px; }
  .collaboration { grid-template-columns: .9fr 1.1fr; }
  .collaboration-points { grid-template-columns: 1fr; margin-top: 46px; }
  .collaboration-points article { display: grid; grid-template-columns: 60px 1fr; column-gap: 8px; }
  .collaboration-points h3 { margin: 0 0 6px; }
  .collaboration-points p { grid-column: 2; }
  .contact { padding-inline: 48px; }
}

@media (max-width: 820px) {
  :root { --header-height: 70px; --shell: calc(100% - 40px); }
  .site-header, .site-header.is-scrolled { height: var(--header-height); padding-inline: 20px; }
  .menu-toggle { z-index: 3; display: flex; align-items: center; gap: 12px; color: inherit; }
  .menu-toggle__label { font-size: 12px; font-weight: 700; }
  .menu-toggle__icon { position: relative; width: 24px; height: 18px; display: block; }
  .menu-toggle__icon i { position: absolute; left: 0; width: 24px; height: 1px; background: currentColor; transition: transform 200ms ease, top 200ms ease; }
  .menu-toggle__icon i:first-child { top: 5px; }
  .menu-toggle__icon i:last-child { top: 13px; }
  .menu-toggle[aria-expanded="true"] .menu-toggle__icon i:first-child { top: 9px; transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-toggle__icon i:last-child { top: 9px; transform: rotate(-45deg); }
  .site-nav { position: fixed; z-index: 2; inset: 0; padding: 118px 24px 42px; display: flex; flex-direction: column; align-items: stretch; gap: 0; color: var(--paper-bright); background: var(--ink); visibility: hidden; opacity: 0; pointer-events: none; transform: translateY(-12px); transition: opacity 220ms ease, transform 220ms ease, visibility 220ms; }
  .site-nav.is-open { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); }
  .site-nav > a:not(.nav-cta) { padding: 21px 2px; border-bottom: 1px solid rgba(255,255,255,.15); font-family: var(--serif); font-size: 28px; opacity: 1; }
  .site-nav .nav-cta { margin-top: auto; justify-content: space-between; }
  .site-header:has(.site-nav.is-open) { color: var(--paper-bright); background: var(--ink); }
  .hero { height: auto; min-height: 900px; padding: 130px 20px 75px; grid-template-columns: 1fr; grid-template-rows: auto 1fr; gap: 20px; }
  .hero::before { background-size: 58px 58px; }
  .hero-copy { padding-top: 0; }
  .hero .eyebrow { margin-bottom: 24px; }
  .hero h1 { font-size: clamp(50px, 13vw, 76px); }
  .hero-intro { margin-top: 26px; font-size: 15px; line-height: 1.8; }
  .hero-actions { margin-top: 30px; }
  .hero-poster { justify-self: center; width: min(86vw, 520px); margin-top: 4px; }
  .hero-index { display: none; }
  .principle-strip__track { min-height: 52px; padding-inline: 24px; gap: 26px; font-size: 12px; }
  .principle-strip__track span:nth-of-type(4), .principle-strip__track i:nth-of-type(3) { display: none; }
  .statement { padding: 95px 0 110px; grid-template-columns: 1fr; gap: 38px; }
  .statement-body > p { margin-top: 40px; padding-left: 24px; }
  .services { padding: 90px 0 110px; }
  .section-heading { grid-template-columns: 1fr; gap: 34px; }
  .service-grid { margin-top: 58px; }
  .service-card { min-height: 365px; }
  .scenarios { padding: 95px 0 100px; }
  .scenario-layout { margin-top: 58px; grid-template-columns: 1fr; }
  .scenario-tabs { display: grid; grid-template-columns: repeat(2, 1fr); border-left: 1px solid rgba(255,255,255,.16); }
  .scenario-tabs button { padding: 0 14px; grid-template-columns: 30px 1fr auto; border-right: 1px solid rgba(255,255,255,.16); }
  .scenario-tabs button:hover { padding-left: 14px; }
  .scenario-panel { min-height: 410px; }
  .method { padding: 100px 0 110px; grid-template-columns: 1fr; gap: 70px; }
  .method-intro { position: static; }
  .collaboration { grid-template-columns: 1fr; }
  .collaboration-art { min-height: 600px; }
  .collaboration-copy { padding: 90px 32px 100px; }
  .collaboration-points { grid-template-columns: repeat(3, 1fr); }
  .collaboration-points article { display: block; }
  .collaboration-points h3 { margin: 18px 0 8px; }
  .collaboration-points p { grid-column: auto; }
  .faq { padding: 100px 0 110px; grid-template-columns: 1fr; gap: 55px; }
  .contact { min-height: 820px; padding: 92px 32px 46px; grid-template-columns: 1fr; grid-template-rows: auto auto auto; }
  .contact-company { grid-column: auto; }

  html:not(.js) .menu-toggle { display: none; }
  html:not(.js) .site-header { height: auto; min-height: 104px; padding-block: 15px 11px; flex-wrap: wrap; row-gap: 8px; background: var(--ink); }
  html:not(.js) .site-nav { position: static; width: 100%; padding: 0; flex-direction: row; justify-content: space-between; gap: 6px; visibility: visible; opacity: 1; pointer-events: auto; transform: none; background: transparent; }
  html:not(.js) .site-nav > a:not(.nav-cta) { padding: 8px 2px; border: 0; font-family: var(--sans); font-size: 12px; white-space: nowrap; }
  html:not(.js) .site-nav .nav-cta { min-height: 32px; margin: 0; padding-inline: 9px; gap: 8px; font-size: 12px; white-space: nowrap; }
  html:not(.js) .hero { padding-top: 160px; }
}

@media (max-width: 560px) {
  :root { --shell: calc(100% - 32px); }
  .brand-text { font-size: 15px; }
  .hero { min-height: 820px; padding-inline: 16px; }
  .hero h1 { font-size: clamp(47px, 14.1vw, 68px); line-height: 1.03; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 14px; }
  .hero-actions .button { width: 100%; }
  .hero-actions .text-link { align-self: flex-start; }
  .hero-poster { width: 92vw; max-width: 440px; }
  .poster-card--main { padding: 21px; }
  .poster-card--back { padding: 20px 12px; }
  .poster-glyph { font-size: 53vw; }
  .poster-note { font-size: 11px; }
  .principle-strip__track { justify-content: center; }
  .principle-strip__track span:nth-of-type(3), .principle-strip__track i:nth-of-type(2) { display: none; }
  .statement-body h2, .section-heading h2, .method h2, .collaboration h2, .faq h2 { font-size: 42px; }
  .statement-body > p { padding-left: 18px; font-size: 15px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 350px; padding: 28px 24px; }
  .service-card h3 { margin-top: 60px; font-size: 31px; }
  .service-card ul { gap: 6px; }
  .scenario-tabs { grid-template-columns: 1fr; }
  .scenario-tabs button { min-height: 66px; }
  .scenario-panel { min-height: 430px; padding: 34px 26px; }
  .scenario-panel__label { top: 32px; left: 26px; }
  .scenario-panel__number { font-size: 100px; }
  .scenario-panel h3 { font-size: 34px; }
  .method-steps li { min-height: 170px; grid-template-columns: 54px 1fr; }
  .collaboration-art { min-height: 490px; }
  .collaboration-art__disc { width: 58%; left: 21%; top: 25%; }
  .collaboration-art__mark { font-size: 54vw; }
  .collaboration-copy { padding: 78px 20px 90px; }
  .collaboration-points { grid-template-columns: 1fr; }
  .collaboration-points article { padding-bottom: 16px; }
  .faq-list summary { min-height: 92px; font-size: 17px; }
  .contact { padding: 80px 20px 38px; gap: 46px; }
  .contact h2 { font-size: 54px; }
  .contact-card { padding: 25px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media (prefers-contrast: more) {
  :root { --muted: #6d7066; --line: rgba(23,24,20,.35); }
  .hero-intro, .section-heading--light > p, .contact-main > p:not(.eyebrow) { color: rgba(255,255,255,.82); }
}