/* ==========================================================================
   新碳纪元 InnoHelix — main site
   Colours and fonts follow Brand Guideline v1.0: Primary Forest, Technology
   Teal (sparingly, for interaction and key metrics), Body Ink, Mist and white
   chapters. The dark "world" chapters sit on a deep Forest-black so the
   particle story keeps its contrast. Inside the particles colour still means
   something: warm = impurities, white and teal = clean gas.
   ========================================================================== */

:root {
  /* Brand Guideline v1.0 tokens */
  --forest: #173f3d;         /* Primary Forest: headings, dark brand sections */
  --teal: #008780;           /* Technology Teal: links, active states, key metrics */
  --teal-hi: #4fc2b8;        /* the same teal lifted for use on the dark world */
  --sage: #667b78;           /* Muted Sage: subheadings, secondary info, small captions */
  --body-ink: #303a39;       /* Body Ink */
  --grey-2: #7b8987;         /* Secondary Grey: large captions only (3.7:1 on white) */
  --mist: #f5f8f6;           /* Mist Background */
  --border: #dce6e2;         /* Border Grey */

  --black: #0b1716;          /* the dark world: Forest taken towards black */
  --black-2: #10201f;
  --black-3: #172b29;
  --paper: var(--mist);
  --white: #ffffff;
  --ink: #f2f6f5;
  --ink-2: #c4d0cd;
  --mute: #93a5a1;
  --dim: #748884;
  --line: rgba(242, 246, 245, .1);
  --line-2: rgba(242, 246, 245, .2);
  --p-ink: var(--forest);
  --p-ink-2: var(--body-ink);
  --p-mute: #5c706d;         /* Muted Sage darkened just enough for AA on Mist (4.9:1) */
  --p-dim: var(--sage);
  --p-line: var(--border);
  --p-line-2: #c6d4cf;
  --warn: #d48a68;           /* impurity, used only on data */

  --f-sans: "Inter", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --f-head: "DM Sans", "MiSans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --f-cjk: var(--f-sans);
  --f-mono: ui-monospace, "SF Mono", Menlo, monospace;

  --e: cubic-bezier(.22, 1, .36, 1);
  --e-out: cubic-bezier(.16, 1, .3, 1);
  --e-in: cubic-bezier(.4, 0, 1, 1);
  --e-inout: cubic-bezier(.76, 0, .24, 1);

  --gut: clamp(20px, 4.4vw, 72px);
  --maxw: 1520px;
  --top-h: 68px;
  color-scheme: dark;        /* single deliberate look: dark world with paper chapters */
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body { background: var(--black); color: var(--ink); font: 400 17px/1.6 var(--f-sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; border-radius: 4px; }
::selection { background: var(--ink); color: var(--black); }
html[data-lang="zh"] [lang="en"] { display: none !important; }
html[data-lang="en"] [lang="zh-CN"] { display: none !important; }
.view[hidden] { display: none !important; }

/* ---------- fixed world stack ---------- */
.atmo { position: fixed; inset: 0; z-index: 0; pointer-events: none; background: var(--black); overflow: hidden; }
.atmo i { position: absolute; border-radius: 50%; filter: blur(100px); }
.atmo .b1 { width: 60vw; height: 60vw; right: -18vw; top: -20vw; background: radial-gradient(circle, rgba(242, 243, 241, .07), transparent 68%); animation: drift 30s ease-in-out infinite alternate; }
.atmo .b2 { width: 50vw; height: 50vw; left: -18vw; bottom: -24vw; background: radial-gradient(circle, rgba(242, 243, 241, .05), transparent 70%); animation: drift 36s ease-in-out infinite alternate-reverse; }
@keyframes drift { to { transform: translate3d(-5vw, 4vh, 0) scale(1.08); } }
.ghost { display: none; position: fixed; z-index: 0; inset: auto 0 6vh 0; text-align: center; pointer-events: none; user-select: none; white-space: nowrap;
  font: 600 clamp(70px, 17vw, 320px)/1 var(--f-sans); letter-spacing: -.055em; color: transparent; -webkit-text-stroke: 1px rgba(242, 243, 241, .045); transition: opacity .6s var(--e); }
#world { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 1; display: block; pointer-events: none; }
.vignette { position: fixed; inset: 0; z-index: 1; pointer-events: none; background: radial-gradient(130% 100% at 55% 45%, transparent 55%, rgba(0, 0, 0, .7) 100%); }
.grain { position: fixed; inset: -50%; z-index: 1; pointer-events: none; opacity: .06; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  animation: grain 1.2s steps(6) infinite; }
@keyframes grain { 33% { transform: translate(-3%, 2%); } 66% { transform: translate(2%, -3%); } }
main, .foot { position: relative; z-index: 2; }

/* ---------- loader ---------- */
.loader { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: var(--black); transition: opacity .9s var(--e-out) .1s, visibility 0s linear 1s; }
.loader__inner { display: grid; justify-items: center; gap: 26px; }
.loader__mark { width: 60px; animation: breathe 2.2s ease-in-out infinite; }
@keyframes breathe { 50% { opacity: .45; } }
.loader__bar { width: 140px; height: 1px; background: var(--line); overflow: hidden; }
.loader__bar i { display: block; height: 100%; background: var(--ink); transform-origin: left; transform: scaleX(0); }
body.ready .loader { opacity: 0; visibility: hidden; }

/* ---------- progress / cursor ---------- */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 60; pointer-events: none; mix-blend-mode: difference; }
.progress i { display: block; height: 100%; background: #fff; transform-origin: left; transform: scaleX(0); }
.cursor { position: fixed; top: 0; left: 0; z-index: 101; pointer-events: none; mix-blend-mode: difference; display: none; }
/* the <i> is a zero-size point moved by JS transform; the visible circle is its ::before,
   so scaling the circle never scales the position */
.cursor i { position: absolute; left: 0; top: 0; width: 0; height: 0; }
.cursor i::before { content: ""; position: absolute; border-radius: 50%; }
.cursor .dot::before { left: -3px; top: -3px; width: 6px; height: 6px; background: #fff; }
.cursor .ring::before { left: -18px; top: -18px; width: 36px; height: 36px; border: 1px solid rgba(255, 255, 255, .8); transition: scale .45s var(--e), background .45s var(--e); }
.cursor.hot .ring::before { scale: 1.75; background: #fff; }
html.has-cursor .cursor { display: block; }
html.has-cursor, html.has-cursor a, html.has-cursor button { cursor: none; }

/* ---------- top bar ---------- */
.top { position: fixed; z-index: 50; top: 0; left: 0; right: 0; padding-top: env(safe-area-inset-top, 0px); transition: background .45s var(--e), border-color .45s var(--e), translate .6s var(--e-inout); border-bottom: 1px solid transparent; }
.top__in { height: var(--top-h); max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; }
.top.scrolled { background: rgba(10, 11, 11, .72); -webkit-backdrop-filter: blur(20px) saturate(140%); backdrop-filter: blur(20px) saturate(140%); border-color: var(--line); }
.top.hide { translate: 0 -100%; }
.logo { justify-self: start; display: flex; align-items: center; gap: 12px; }
.logo__mark { width: 30px; display: none; }
.logo__word { height: 40px; width: auto; margin: 0 -10px 0 -8px; }
.logo__cn { padding-left: 12px; border-left: 1px solid var(--line-2); font: 600 14px/1 var(--f-head); letter-spacing: .12em; color: var(--ink); }
html[data-lang="en"] .logo__cn { display: none; }
body.on-paper .logo__cn { color: var(--p-ink); border-color: var(--p-line-2); }
.logo .on-light { display: none; }
.menu { display: flex; gap: 34px; }
.menu a { position: relative; font-size: 15px; color: var(--ink-2); padding: 6px 0; transition: color .3s var(--e); }
.menu a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .45s var(--e); }
.menu a:hover { color: var(--ink); }
.menu a:hover::after, .menu a.active::after { transform: scaleX(1); }
.menu a.active { color: var(--ink); }
.top__right { justify-self: end; display: flex; align-items: center; gap: 22px; }
.lang { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--dim); }
.lang button { color: var(--mute); padding: 4px 2px; transition: color .3s var(--e); }
html[data-lang="zh"] .lang [data-set="zh"], html[data-lang="en"] .lang [data-set="en"] { color: var(--ink); font-weight: 500; }
.burger { display: none; width: 40px; height: 40px; position: relative; }
.burger i { position: absolute; left: 10px; right: 10px; height: 1.5px; background: currentColor; transition: transform .45s var(--e), top .45s var(--e); }
.burger i:first-child { top: 16px; }
.burger i:last-child { top: 23px; }
body.sheet-open .burger i:first-child { top: 19.5px; transform: rotate(45deg); }
body.sheet-open .burger i:last-child { top: 19.5px; transform: rotate(-45deg); }
/* light chapters flip the bar */
body.on-paper .top { color: var(--p-ink); }
body.on-paper .top.scrolled { background: rgba(243, 243, 240, .82); border-color: var(--p-line); }
body.on-paper .menu a { color: var(--p-ink-2); }
body.on-paper .menu a:hover, body.on-paper .menu a.active { color: var(--p-ink); }
body.on-paper .lang button { color: var(--p-dim); }
html[data-lang="zh"] body.on-paper .lang [data-set="zh"], html[data-lang="en"] body.on-paper .lang [data-set="en"] { color: var(--p-ink); }
body.on-paper .logo .on-dark { display: none; }
body.on-paper .logo .on-light { display: block; }
body.on-paper .logo__mark { filter: brightness(0); }
body.on-paper .top .btn--solid { background: var(--teal); color: #fff; }

.sheet { position: fixed; inset: 0; z-index: 45; background: var(--black); display: grid; align-content: center; padding: var(--top-h) var(--gut) 40px; opacity: 0; visibility: hidden; transition: opacity .45s var(--e), visibility 0s linear .45s; }
.sheet nav { display: grid; gap: 6px; }
.sheet a { font-size: clamp(36px, 10vw, 56px); font-weight: 500; letter-spacing: -.04em; line-height: 1.15; color: var(--ink); translate: 0 20px; opacity: 0; transition: translate .6s var(--e-out), opacity .6s var(--e-out); }
body.sheet-open .sheet { opacity: 1; visibility: visible; transition: opacity .45s var(--e); }
body.sheet-open .sheet a { translate: 0 0; opacity: 1; }
body.sheet-open .sheet a:nth-child(2) { transition-delay: .04s; } body.sheet-open .sheet a:nth-child(3) { transition-delay: .08s; }
body.sheet-open .sheet a:nth-child(4) { transition-delay: .12s; } body.sheet-open .sheet a:nth-child(5) { transition-delay: .16s; } body.sheet-open .sheet a:nth-child(6) { transition-delay: .2s; }
body.sheet-open .top { color: var(--ink); background: transparent; border-color: transparent; }
body.sheet-open .logo .on-dark { display: block; } body.sheet-open .logo .on-light { display: none; } body.sheet-open .logo__mark { filter: none; }

/* ---------- buttons ---------- */
.btn { --mx: 50%; --my: 50%; position: relative; isolation: isolate; overflow: hidden; display: inline-flex; align-items: center; gap: 12px;
  height: 52px; padding: 0 26px; border-radius: 999px; font-size: 15px; font-weight: 500; white-space: nowrap;
  transition: translate .45s var(--e), background .45s var(--e), color .45s var(--e), border-color .45s var(--e), box-shadow .45s var(--e); }
.btn > * { position: relative; z-index: 2; }
.btn .arr { transition: translate .45s var(--e); }
.btn:hover .arr { translate: 4px 0; }
.btn:active { scale: .97; }
.btn::after { content: ""; position: absolute; inset: 0; z-index: 1; opacity: 0; transition: opacity .4s var(--e); }
.btn:hover::after { opacity: 1; }
.btn--solid { background: var(--teal); color: #fff; }
.btn--solid::after { background: radial-gradient(120px circle at var(--mx) var(--my), rgba(255, 255, 255, .22), transparent 70%); }
.btn--solid:hover { translate: 0 -2px; box-shadow: 0 16px 34px -18px rgba(0, 0, 0, .9); }
.btn--line { border: 1px solid var(--line-2); color: var(--ink); }
.btn--line::after { background: radial-gradient(140px circle at var(--mx) var(--my), rgba(242, 243, 241, .12), transparent 65%); }
.btn--line:hover { translate: 0 -2px; border-color: rgba(242, 243, 241, .5); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }
.btn--ghost { height: 46px; padding: 0 22px; border: 1px solid rgba(255, 255, 255, .7); color: #fff; border-radius: 4px; }
.btn--ghost::after { background: rgba(255, 255, 255, .1); }
.btn--ghost:hover { border-color: #fff; }
.paper .btn--solid { background: var(--teal); color: #fff; }

/* ---------- views + page transition ---------- */
.view { transition: opacity .32s var(--e-in), translate .32s var(--e-in); }
.view.is-out { opacity: 0; translate: 0 -14px; }
.view.is-in { animation: viewIn .8s var(--e-out) both; }
@keyframes viewIn { from { opacity: 0; translate: 0 18px; } to { opacity: 1; translate: 0 0; } }

/* ---------- chapters + type ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.sec { position: relative; padding-block: clamp(120px, 17vh, 210px); }
.paper { background: var(--paper); color: var(--p-ink); }
/* section label: flat text with a short teal rule (no tape, no rotation, no hand lettering) */
.label { display: flex; align-items: center; gap: 12px; font: 500 14px/1.4 var(--f-sans); color: var(--mute); letter-spacing: .01em; }
.label::before { content: ""; flex: none; width: 24px; height: 2px; border-radius: 1px; background: var(--teal-hi); }
.label.center { justify-content: center; }
.paper .label { color: var(--p-mute); }
.paper .label::before { background: var(--teal); }
h1, h2, h3, h4, h5, .d-xxl, .d-xl, .d-l, .d-m, .num { font-family: var(--f-head); }
.d-xxl, .d-xl, .d-l, .d-m { font-weight: 700; letter-spacing: -.025em; line-height: 1.1; }
.d-xxl { font-size: clamp(38px, 4.6vw, 66px); line-height: 1.08; }
.d-xl { font-size: clamp(34px, 3.6vw, 54px); }
.d-l { font-size: clamp(28px, 3vw, 44px); line-height: 1.14; font-weight: 600; }
.d-m { font-size: clamp(22px, 1.9vw, 26px); line-height: 1.25; font-weight: 600; letter-spacing: -.01em; }
.d-xxl [lang="zh-CN"], .d-xl [lang="zh-CN"], .d-l [lang="zh-CN"], .d-m [lang="zh-CN"] { letter-spacing: 0; line-height: 1.2; }
.dim { color: var(--dim); }
.paper .dim { color: var(--p-dim); }
.lead { font-size: clamp(17px, 1.3vw, 20px); line-height: 1.6; color: var(--ink-2); max-width: 40ch; }
.lead[lang="en"] { max-width: 46ch; }
.lead b { color: var(--ink); font-weight: 500; }
.paper .lead { color: var(--p-ink-2); }
.paper .lead b { color: var(--p-ink); }
.body { font-size: 16px; line-height: 1.65; color: var(--mute); }
.paper .body { color: var(--p-mute); }
.num { font-weight: 700; letter-spacing: -.03em; line-height: .95; font-variant-numeric: tabular-nums; }
.mono { font-family: var(--f-mono); }
.src { font: 400 12px/1.6 var(--f-sans); color: var(--mute); }
.paper .src { color: var(--p-mute); }
.split2 { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 60px; align-items: end; margin-top: 34px; }
.panel { background: var(--black-2); border: 1px solid var(--line); border-radius: 20px; }

/* reveals */
.ln { display: block; overflow: hidden; padding-bottom: .1em; margin-bottom: -.1em; }
.ln > span { display: inline-block; translate: 0 112%; transition: translate 1.15s var(--e-out); transition-delay: calc(var(--i, 0) * 85ms + var(--d, 0ms)); }
.in .ln > span, .ln.in > span { translate: 0 0; }
[data-reveal="up"] { opacity: 0; translate: 0 32px; transition: opacity 1s var(--e-out), translate 1s var(--e-out); transition-delay: calc(var(--i, 0) * 80ms + var(--d, 0ms)); }
[data-reveal="up"].in { opacity: 1; translate: 0 0; }
[data-reveal="fade"] { opacity: 0; transition: opacity 1.2s var(--e-out); }
[data-reveal="fade"].in { opacity: 1; }
[data-reveal="scale"] { opacity: 0; scale: .92; transition: opacity 1.3s var(--e-out), scale 1.6s var(--e-out); }
[data-reveal="scale"].in { opacity: 1; scale: 1; }
.enter { opacity: 0; translate: 0 26px; transition: opacity 1.1s var(--e-out), translate 1.1s var(--e-out); transition-delay: var(--d, 0ms); }
body.ready .enter { opacity: 1; translate: 0 0; }
body.ready .hero .ln > span { translate: 0 0; }

/* ==========================================================================
   HOME
   ========================================================================== */
.hero { min-height: 100svh; display: grid; grid-template-rows: 1fr auto; padding: calc(var(--top-h) + 60px) 0 34px; }
.hero__main { align-self: end; }
.hero__top { display: flex; justify-content: space-between; gap: 20px; margin-bottom: clamp(24px, 4vh, 40px); font-size: 14px; color: var(--mute); }
.hero h1 .ln > span { transition-duration: 1.3s; }
.hero__main > .label { margin-bottom: clamp(20px, 3vh, 32px); }
.hero__foot { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end; margin-top: clamp(26px, 4vh, 44px); }
.hero__copy { display: grid; gap: 18px; }
.hero__proof { display: flex; align-items: baseline; gap: 10px; font-size: 14px; color: var(--mute); }
.hero__proof b { font: 700 22px/1 var(--f-head); color: var(--ink); }
.hero__foot .lead { max-width: 34em; font-size: clamp(18px, 1.45vw, 21px); }
.hero__foot .lead[lang="zh-CN"] { max-width: 32em; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
/* ---------- second screen: full-screen waste-carbon backdrop (Envision-style scale and whitespace) ---------- */
.scale { position: relative; z-index: 2; isolation: isolate; overflow: hidden; display: flex; min-height: 100svh; background: var(--black); color: #fff; }
.scale__media { position: absolute; inset: -8% 0; z-index: -2; }
.scale__media img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 58%;
  filter: saturate(.62) contrast(1.06) brightness(.84);
  transform: translate3d(0, var(--sy, 0px), 0) scale(var(--zoom, 1.14)); transform-origin: 50% 60%; will-change: transform; }
.scale::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(180deg, rgba(8, 20, 19, .94) 0%, rgba(8, 20, 19, .66) 28%, rgba(8, 20, 19, .2) 52%, rgba(8, 20, 19, .5) 78%, rgba(8, 20, 19, .95) 100%); }
.scale__in { display: flex; flex-direction: column; min-height: 100svh; padding-top: calc(var(--top-h) + clamp(48px, 9vh, 112px)); padding-bottom: clamp(32px, 6vh, 64px); }
.scale__top { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: clamp(40px, 8vw, 140px); align-items: start; }
.scale__head { display: grid; justify-items: start; gap: 26px; }
.scale__head .label { color: rgba(255, 255, 255, .72); }
.scale__head .d-l { color: #fff; max-width: 15em; }
.scale__body { padding-top: 44px; font-size: clamp(17px, 1.35vw, 20px); line-height: 1.65; color: rgba(255, 255, 255, .88); max-width: 26em; }
.scale__chain { position: relative; margin-top: auto; padding-top: 48px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.scale__chain::before { content: ""; position: absolute; left: 0; right: 0; top: 53px; height: 1px; background: linear-gradient(90deg, rgba(255, 255, 255, .34), rgba(255, 255, 255, .34) 50%, rgba(79, 194, 184, .6)); }
.scale__chain li { position: relative; display: grid; gap: 3px; align-content: start; padding-top: 24px; font-size: 14px; line-height: 1.4; color: rgba(255, 255, 255, .78); }
.scale__chain li::before { content: ""; position: absolute; left: 0; top: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--black); border: 1px solid rgba(255, 255, 255, .7); }
.scale__chain .is-us { color: #fff; font-weight: 500; }
.scale__chain .is-us::before { background: var(--teal-hi); border-color: var(--teal-hi); box-shadow: 0 0 0 6px rgba(79, 194, 184, .18); }
.scale__chain small { font: 500 12px/1.3 var(--f-head); letter-spacing: .06em; color: var(--teal-hi); }
.scale__cap { margin-top: 18px; font-size: 12px; color: rgba(255, 255, 255, .56); }

.now { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 60px; align-items: end; margin-top: 34px; }
.now__copy { display: grid; gap: 24px; }
.now__copy .lead { max-width: 34em; font-size: clamp(16px, 1.15vw, 18px); }
.big { display: grid; gap: 16px; justify-items: start; }
.big .row { display: flex; align-items: baseline; gap: clamp(14px, 2vw, 30px); flex-wrap: wrap; }
.big .num { font-size: clamp(44px, 4.6vw, 64px); }
.big .arr { font-weight: 200; font-size: clamp(36px, 3.6vw, 62px); color: var(--dim); }
.big .body { max-width: 34ch; }
.facts { margin-top: clamp(70px, 10vh, 120px); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-2); margin-bottom: 22px; }
.facts div { padding: 22px 22px 0 0; display: grid; gap: 8px; }
.facts div + div { padding-left: 22px; border-left: 1px solid var(--line); }
.facts b { font: 700 clamp(30px, 2.8vw, 44px)/1 var(--f-head); letter-spacing: -.02em; }
.facts span { font-size: 13.5px; color: var(--mute); line-height: 1.45; }

.tiles { margin-top: 34px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.tile { position: relative; overflow: hidden; border-radius: 24px; min-height: clamp(300px, 34vw, 480px); background: var(--black-2); border: 1px solid var(--line); display: flex; align-items: flex-end; padding: clamp(24px, 2.6vw, 40px); isolation: isolate; }
.tile__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; filter: brightness(.5) contrast(1.1); transition: scale 1.2s var(--e), filter 1.2s var(--e); }
.tile::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, transparent 35%, rgba(0, 0, 0, .75)); }
.tile:hover .tile__bg { scale: 1.05; filter: brightness(.62) contrast(1.05); }
.tile__txt { display: grid; gap: 10px; max-width: 22em; position: relative; z-index: 1; }
.tile__k { font-size: 14px; font-weight: 500; color: var(--ink-2); }
.tile h3 { font-weight: 500; font-size: clamp(22px, 2vw, 32px); line-height: 1.2; letter-spacing: -.03em; }
.tile__go { position: absolute; right: clamp(24px, 2.6vw, 40px); top: clamp(24px, 2.6vw, 40px); width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-items: center; font-size: 18px; transition: background .45s var(--e), color .45s var(--e), transform .45s var(--e); }
.tile:hover .tile__go { background: var(--ink); color: var(--black); transform: rotate(-45deg); }
.tile--light { background: var(--paper); color: var(--p-ink); border: 0; }
.tile--light::before { display: none; }
.tile--light .tile__k { color: var(--p-mute); }
.tile--light .tile__go { border-color: var(--p-line-2); }
.tile--light:hover .tile__go { background: var(--p-ink); color: var(--white); }
.tile__module { position: absolute; right: -6%; top: 10%; width: 82%; z-index: -1; transition: scale 1.2s var(--e), translate 1.2s var(--e); }
.tile--light:hover .tile__module { scale: 1.04; translate: -2% 0; }

/* next-page link */
.next { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; flex-wrap: wrap;
  max-width: var(--maxw); margin: 0 auto; padding: clamp(80px, 12vh, 140px) var(--gut) clamp(70px, 10vh, 120px); border-top: 1px solid var(--line); }
.next__k { font-size: 14px; color: var(--mute); }
.next__t { display: inline-flex; align-items: baseline; gap: .4em; font: 700 clamp(30px, 3.6vw, 56px)/1.1 var(--f-head); letter-spacing: -.025em; }
.next__t [lang="zh-CN"] { letter-spacing: 0; }
.next__t .arr { display: inline-block; transition: translate .6s var(--e); }
.next:hover .next__t .arr { translate: .25em 0; }
.next--paper { background: var(--paper); color: var(--p-ink); border-color: var(--p-line); max-width: none; padding-inline: max(var(--gut), calc((100vw - var(--maxw)) / 2 + var(--gut))); }
.next--paper .next__k { color: var(--p-mute); }

/* ==========================================================================
   PRODUCT (paper)
   ========================================================================== */
.product { text-align: center; overflow: hidden; padding-top: calc(var(--top-h) + clamp(70px, 11vh, 130px)); }
.product__title { margin-top: 26px; }
.product__sub { margin: 26px auto 0; }
.stage { position: relative; margin: clamp(40px, 7vh, 80px) auto 0; width: min(1260px, 100%); }
.stage::before { content: ""; position: absolute; left: 8%; right: 8%; bottom: 3%; height: 14%; border-radius: 50%; background: radial-gradient(closest-side, rgba(0, 0, 0, .26), transparent); filter: blur(18px); }
.stage__img { position: relative; width: 100%; }
.hot { position: absolute; left: var(--x); top: var(--y); translate: -50% -50%; z-index: 2; }
.hot button { position: relative; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 500 13px/1 var(--f-sans); color: var(--white); background: var(--p-ink);
  box-shadow: 0 0 0 5px rgba(251, 251, 249, .9), 0 8px 24px rgba(0, 0, 0, .25); transition: scale .4s var(--e); }
.hot button::before { content: ""; position: absolute; inset: -5px; border-radius: 50%; border: 1px solid rgba(11, 12, 12, .5); animation: ring 2.8s var(--e-out) infinite; animation-delay: calc(var(--i) * .35s); }
@keyframes ring { 0% { scale: .85; opacity: 1; } 100% { scale: 2.1; opacity: 0; } }
.hot .lab { position: absolute; left: 50%; bottom: calc(100% + 14px); translate: -50% 6px; width: max-content; max-width: 240px; padding: 10px 14px; border-radius: 10px; text-align: left;
  font-size: 14px; line-height: 1.4; color: var(--white); background: var(--p-ink); opacity: 0; pointer-events: none; transition: opacity .35s var(--e), translate .35s var(--e); }
.hot:hover .lab, .hot:focus-within .lab, .hot.on .lab { opacity: 1; translate: -50% 0; }
.hot:hover button, .hot.on button { scale: 1.15; }
.stage__cap { margin-top: 10px; }
.chain { position: relative; margin-top: clamp(70px, 10vh, 120px); display: grid; grid-template-columns: 1fr 1fr 1.2fr 1fr 1fr; text-align: left; border-top: 1px solid var(--p-line-2); }
.node { padding: 24px 20px 0 0; display: grid; gap: 8px; align-content: start; }
.node + .node { padding-left: 20px; border-left: 1px solid var(--p-line); }
.node .t { font-weight: 500; font-size: 18px; letter-spacing: -.02em; line-height: 1.3; }
.node .s { font-size: 14px; color: var(--p-mute); line-height: 1.55; }
.node--core { background: var(--p-ink); color: var(--white); border-radius: 0 0 20px 20px; padding-bottom: 24px; }
.node--core .s { color: #a9adab; }
.ifaces { margin-top: clamp(80px, 12vh, 140px); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); text-align: left; border-top: 1px solid var(--p-line-2); }
.iface { padding: 24px 24px 0 0; display: grid; gap: 10px; align-content: start; }
.iface + .iface { padding-left: 24px; border-left: 1px solid var(--p-line); }
.iface h4 { font-weight: 500; font-size: 19px; letter-spacing: -.02em; line-height: 1.3; }
.iface p { font-size: 14.5px; color: var(--p-mute); line-height: 1.6; }

.value { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 110px); align-items: end; }
.vlist li { padding: 22px 0; border-top: 1px solid var(--line); display: grid; gap: 4px; }
.vlist li:last-child { border-bottom: 1px solid var(--line); }
.vlist h4 { font-weight: 500; font-size: 21px; letter-spacing: -.02em; }
.vlist p { font-size: 15px; color: var(--mute); }

/* ==========================================================================
   TECHNOLOGY
   ========================================================================== */
.page-head { padding-top: calc(var(--top-h) + clamp(70px, 11vh, 130px)); }
.sides { margin-top: clamp(70px, 10vh, 120px); display: grid; grid-template-columns: 1.05fr .95fr; gap: 14px; }
.side { position: relative; border-radius: 24px; padding: clamp(28px, 3vw, 46px); display: grid; gap: 16px; overflow: hidden; background: var(--black-2); border: 1px solid var(--line); }
.side .k { font-size: 14px; font-weight: 500; color: var(--mute); }
.side h3 { font-weight: 500; font-size: clamp(24px, 2vw, 32px); line-height: 1.2; letter-spacing: -.025em; }
.side--waste { min-height: 580px; align-content: end; background: #000; }
.side--waste .photo { position: absolute; inset: 0; }
.side--waste .photo img { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.1) brightness(.6); transition: scale 1.6s var(--e); }
.side--waste:hover .photo img { scale: 1.04; }
.side--waste .photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, .05) 20%, rgba(0, 0, 0, .9) 85%); }
.side--waste > *:not(.photo) { position: relative; }
.mandate { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; align-items: end; height: 220px; margin-top: 6px; }
.mandate .bar { display: flex; flex-direction: column; justify-content: flex-end; gap: 10px; height: 100%; }
.mandate .fill { height: calc(var(--h) * .6); flex: none; min-height: 4px; border-radius: 4px 4px 2px 2px; background: linear-gradient(180deg, var(--ink), rgba(242, 243, 241, .08)); transform-origin: bottom; transform: scaleY(0); transition: transform 1.5s var(--e-out); transition-delay: calc(var(--i) * 150ms); }
.mandate.in .fill { transform: scaleY(1); }
.mandate .v { font-weight: 300; font-size: 40px; letter-spacing: -.05em; line-height: 1; }
.mandate .y { font-size: 13px; color: var(--mute); }
.gap { margin-top: clamp(100px, 15vh, 170px); display: grid; gap: 30px; }
.gap .d-l { max-width: 17em; }
.gap__why { display: flex; flex-wrap: wrap; font-size: 16px; color: var(--ink-2); }
.gap__why span { padding: 0 20px; border-left: 1px solid var(--line-2); }
html[data-lang="zh"] .gap__why span[lang="zh-CN"]:first-child { padding-left: 0; border-left: 0; }
html[data-lang="en"] .gap__why span[lang="en"]:nth-child(4) { padding-left: 0; border-left: 0; }

.tech__grid { display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); gap: clamp(40px, 6vw, 110px); }
.tech__rail { position: sticky; top: calc(var(--top-h) + 50px); align-self: start; display: grid; gap: 30px; }
.tech__big { position: relative; height: clamp(150px, 15vw, 240px); }
.tech__big span { position: absolute; left: -.04em; top: 0; font-weight: 200; font-size: clamp(160px, 16vw, 260px); line-height: .82; letter-spacing: -.08em;
  opacity: 0; translate: 0 34px; transition: opacity .7s var(--e-out), translate .7s var(--e-out); }
.tech__big span.on { opacity: 1; translate: 0 0; }
.toc { border-top: 1px solid var(--line); }
.toc li { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--dim); transition: color .4s var(--e); }
.toc li.on { color: var(--ink); }
.arts { display: grid; gap: clamp(100px, 16vh, 190px); padding-block: 4vh 8vh; }
.art { display: grid; gap: 24px; min-height: 72vh; align-content: center; }
.art__k { font-size: 14px; font-weight: 500; color: var(--mute); }
.art .d-m { max-width: 15em; }
.io { display: grid; grid-template-columns: 1fr 1fr; }
.io > div { padding: 22px 24px; }
.io > div + div { border-left: 1px solid var(--line); }
.io__h { display: block; font-size: 13px; color: var(--mute); margin-bottom: 10px; }
.io__list li { padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }
.io__list li:last-child { border-bottom: 0; }
.io__list.mono li { font-family: var(--f-mono); color: var(--ink); }
.io__list li.warn { color: var(--warn); }
.proof { display: grid; grid-template-columns: 180px 1fr; gap: 22px; align-items: center; }
.proof figure { border-radius: 12px; overflow: hidden; background: #fff; padding: 8px; }
.plain { display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; }
.plain li { padding: 11px 0; border-top: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }
.reactor { padding: 24px; display: grid; gap: 18px; }
.reactor svg { width: 100%; height: auto; overflow: visible; }
.flowline { animation: dash 2.4s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -48; } }
.beds { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.bed { padding: 18px; border-radius: 14px; display: grid; gap: 6px; background: var(--black-3); }
.bed__k { font-size: 13px; color: var(--mute); }
.bed h5 { font-size: 16px; font-weight: 500; }
.bed p { font-size: 14px; color: var(--mute); line-height: 1.6; }
.triad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tri { padding: 22px; display: grid; gap: 8px; align-content: start; }
.tri h5 { font-size: 19px; font-weight: 500; letter-spacing: -.02em; }
.tri p { font-size: 14.5px; color: var(--ink-2); }
.tri .ref { font: 400 12px/1.5 var(--f-mono); color: var(--mute); margin-top: 6px; }

/* ==========================================================================
   TRACK RECORD (paper)
   ========================================================================== */
.view[data-view="record"] .sec.paper:first-child, .view[data-view="team"] .sec.paper:first-child { padding-top: calc(var(--top-h) + clamp(70px, 11vh, 130px)); }
.bento { margin-top: clamp(50px, 8vh, 90px); display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 14px; }
.b { position: relative; border-radius: 24px; overflow: hidden; background: var(--white); border: 1px solid var(--p-line); padding: clamp(24px, 2.6vw, 38px); display: grid; align-content: space-between; gap: 22px; }
.b__k { font-size: 14px; font-weight: 500; color: var(--p-mute); }
.b--patent { grid-column: span 7; min-height: 500px; background: var(--p-ink); color: var(--white); border: 0; }
.b--patent .b__k, .b--kpi .b__k { color: #a9adab; }
.b--photo { grid-column: span 5; padding: 0; min-height: 500px; }
.b--pubs { grid-column: span 7; }
.b--tall { min-height: 420px; }
.b--awards { grid-column: span 7; }
.b--kpi { grid-column: span 5; background: var(--p-ink); color: var(--white); border: 0; }
.patent-num { display: flex; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.patent-num .num { font-size: clamp(80px, 8vw, 128px); }
.patent-num .lbl { padding-bottom: 22px; font-size: 15px; color: #c4c8c6; max-width: 14em; }
.patent-split { display: flex; gap: 48px; border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 20px; }
.patent-split div { display: grid; gap: 6px; }
.patent-split b { font-weight: 300; font-size: 46px; letter-spacing: -.05em; line-height: 1; }
.patent-split div > span { font-size: 13px; color: #a9adab; }
.certs { position: absolute; right: -8%; top: 4%; width: 64%; opacity: .14; pointer-events: none; filter: grayscale(1) invert(1); mask-image: linear-gradient(90deg, transparent, #000 45%); -webkit-mask-image: linear-gradient(90deg, transparent, #000 45%); }
.b figure { position: absolute; inset: 0; }
.b figure img { width: 100%; height: 100%; object-fit: cover; transition: scale 1.4s var(--e); }
.b:hover figure img { scale: 1.04; }
.b figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, .7)); }
.b figcaption { position: absolute; left: 24px; right: 24px; bottom: 22px; z-index: 1; color: var(--white); }
.b figcaption b { font-weight: 500; font-size: 18px; letter-spacing: -.02em; }
.pubs li { display: grid; grid-template-columns: 1fr auto; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--p-line); align-items: baseline; }
.pubs li:first-child { border-top: 1px solid var(--p-line); }
.pubs .t { font-size: 15px; color: var(--p-ink-2); line-height: 1.5; }
.pubs .j { font: 400 12.5px/1.5 var(--f-mono); color: var(--p-mute); text-align: right; white-space: nowrap; }
.awards li { display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--p-line); }
.awards li:first-child { border-top: 1px solid var(--p-line); }
.awards b { font-weight: 500; font-size: 18px; letter-spacing: -.02em; }
.awards span { font-size: 14px; color: var(--p-mute); }
.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 20px; }
.kpis div { display: grid; gap: 6px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .14); }
.kpis b { font-weight: 300; font-size: clamp(44px, 4.4vw, 68px); letter-spacing: -.06em; line-height: 1; }
.kpis span { font-size: 13px; color: #a9adab; }
.field { padding-bottom: clamp(110px, 16vh, 190px); overflow: hidden; }
.marquee { margin-top: 30px; display: flex; gap: 14px; width: max-content; animation: marquee 70s linear infinite; }
.marquee:hover { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(calc(-50% - 7px)); } }
.marquee figure { position: relative; width: clamp(280px, 30vw, 480px); aspect-ratio: 4 / 3; border-radius: 20px; overflow: hidden; flex: none; }
.marquee img { width: 100%; height: 100%; object-fit: cover; transition: scale 1s var(--e); }
.marquee figure:hover img { scale: 1.04; }

.bridge { margin-top: clamp(60px, 9vh, 110px); display: grid; grid-template-columns: 1fr minmax(240px, .9fr) 1fr; border-top: 1px solid var(--line-2); }
.bcol { display: grid; align-content: start; }
.bcol h4 { display: grid; gap: 4px; padding: 26px 26px 26px 0; font-weight: 500; font-size: 26px; letter-spacing: -.03em; border-bottom: 1px solid var(--line); }
.bcol h4 small { font-size: 14px; font-weight: 400; color: var(--mute); letter-spacing: 0; }
.bcol p { padding: 20px 26px 20px 0; border-bottom: 1px solid var(--line); font-size: 15.5px; color: var(--ink-2); min-height: 72px; display: flex; align-items: center; }
.bcol--mid { background: rgba(242, 243, 241, .05); }
.bcol--mid h4, .bcol--mid p { padding-left: 26px; }
.bcol:last-child h4, .bcol:last-child p { padding-left: 26px; padding-right: 0; }

/* ==========================================================================
   TEAM (paper)
   ========================================================================== */
.core { margin-top: clamp(50px, 8vh, 90px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.person { background: var(--white); border: 1px solid var(--p-line); border-radius: 24px; overflow: hidden; display: grid; grid-template-rows: auto 1fr; }
.person .ph { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: linear-gradient(180deg, #e4e5e0, #d3d5cf); }
.person .ph img { position: absolute; left: 50%; bottom: 0; translate: -50% 0; height: 92%; width: auto; max-width: none; transition: scale 1.3s var(--e); transform-origin: bottom; }
.person:hover .ph img { scale: 1.03; }
.person .bd { padding: 24px 26px 30px; display: grid; gap: 12px; align-content: start; }
.person .role { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-size: 13px; }
.person .role b { font-weight: 600; color: var(--p-ink); letter-spacing: .02em; }
.person .role span { color: var(--p-mute); text-align: right; }
.person h4 { font-weight: 500; font-size: 26px; letter-spacing: -.03em; line-height: 1.15; }
.person h4 small { display: block; font-size: 15px; font-weight: 400; color: var(--p-mute); letter-spacing: 0; margin-top: 4px; }
.person li { font-size: 14px; color: var(--p-ink-2); line-height: 1.55; padding: 8px 0; border-top: 1px solid var(--p-line); }
.ext { margin-top: clamp(70px, 10vh, 120px); display: grid; grid-template-columns: minmax(0, .3fr) minmax(0, 1fr); gap: 40px; }
.ext__lab { display: grid; gap: 10px; align-content: start; }
.ext__lab h3 { font-weight: 500; font-size: 26px; letter-spacing: -.03em; line-height: 1.2; }
.ext__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.mini { background: var(--white); border: 1px solid var(--p-line); border-radius: 20px; overflow: hidden; display: grid; grid-template-columns: 96px 1fr; }
.mini .ph { position: relative; background: linear-gradient(180deg, #e4e5e0, #d3d5cf); overflow: hidden; min-height: 136px; }
.mini .ph img { position: absolute; left: 50%; bottom: 0; translate: -50% 0; height: 90%; width: auto; max-width: none; }
.mini .bd { padding: 16px; display: grid; gap: 4px; align-content: center; }
.mini h5 { font-weight: 500; font-size: 17px; letter-spacing: -.02em; }
.mini .r { font-size: 13px; color: var(--p-ink-2); line-height: 1.4; font-weight: 500; }
.mini p { font-size: 12.5px; color: var(--p-mute); line-height: 1.5; }
.schools { margin-top: clamp(80px, 12vh, 140px); }
.schools__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; }
.schools__note { margin-top: 12px; font-size: 14px; line-height: 1.6; color: var(--p-mute); max-width: 46em; }
.schools__nav { display: flex; gap: 8px; flex: none; }
.schools__nav button { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--p-line-2); display: grid; place-items: center; color: var(--p-ink); transition: background .3s var(--e), color .3s var(--e), opacity .3s var(--e); }
.schools__nav button:hover:not(:disabled) { background: var(--p-ink); color: #fff; }
.schools__nav button:disabled { opacity: .35; cursor: default; }
.schools__nav svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.schools__list { margin-top: 28px; display: grid; grid-auto-flow: column; grid-auto-columns: clamp(176px, 16vw, 220px); gap: 12px; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x mandatory; scroll-behavior: smooth; padding-bottom: 14px; scrollbar-width: thin; scrollbar-color: var(--p-line-2) transparent;
  -webkit-mask-image: linear-gradient(90deg, #000 82%, transparent); mask-image: linear-gradient(90deg, #000 82%, transparent); }
.schools__list.at-end { -webkit-mask-image: none; mask-image: none; }
.schools__list:focus-visible { outline: 2px solid var(--teal); outline-offset: 6px; }
.schools__list li { scroll-snap-align: start; display: grid; grid-template-rows: 84px auto; gap: 16px; align-content: start; padding: 22px 18px 20px; border-radius: 12px; background: var(--white); border: 1px solid var(--p-line); }
.schools__list img { height: 76px; width: auto; max-width: 100%; align-self: center; opacity: .8; }
.schools__word { align-self: center; font: 700 26px/1 var(--f-head); letter-spacing: -.02em; color: var(--p-ink); opacity: .8; }
.schools__list b { font: 500 14.5px/1.4 var(--f-sans); color: var(--p-ink-2); }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.close { min-height: 100svh; display: grid; align-content: center; padding-block: calc(var(--top-h) + 100px) 110px; }
.close__in { display: grid; justify-items: center; text-align: center; }
.close .d-xl { margin-top: 26px; max-width: 13em; }
.close .cta-row { justify-content: center; margin-top: 44px; }
.ways { margin-top: 80px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); width: min(1040px, 100%); text-align: left; border-top: 1px solid var(--line-2); }
.way { padding: 24px 24px 0 0; display: grid; gap: 8px; align-content: start; }
.way + .way { padding-left: 24px; border-left: 1px solid var(--line); }
.way h5 { font-weight: 500; font-size: 19px; letter-spacing: -.02em; }
.way p { font-size: 14.5px; color: var(--mute); line-height: 1.55; }
.contact-line { margin-top: 50px; font-size: 15px; color: var(--mute); }
.todo { color: var(--ink); border-bottom: 1px dashed var(--line-2); }

.foot { position: relative; z-index: 2; overflow: hidden; background: var(--forest); color: #fff; }
.foot__in { padding-top: 64px; }
.foot__top { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; }
.foot__logo { display: inline-flex; align-items: center; gap: 14px; }
.foot__logo img { height: 44px; width: auto; margin: 0 -10px 0 -8px; }
.foot__logo span { padding-left: 14px; border-left: 1px solid rgba(255, 255, 255, .3); font: 600 15px/1 var(--f-head); letter-spacing: .12em; }
.foot__line { margin-top: 20px; font: 600 20px/1.4 var(--f-head); color: rgba(255, 255, 255, .9); }
.foot nav { display: grid; grid-template-columns: repeat(2, auto); gap: 12px 56px; font-size: 15px; align-content: start; }
.foot nav a { color: rgba(255, 255, 255, .84); }
.foot nav a:hover { color: var(--teal-hi); }
.foot__legal { margin-top: 56px; font-size: 13px; color: rgba(255, 255, 255, .64); }
.foot__mark { margin-top: 12px; text-align: center; white-space: nowrap; user-select: none; font: 700 21.5vw/.78 var(--f-head); letter-spacing: -.03em;
  color: rgba(79, 194, 184, 0); -webkit-text-stroke: 1.5px rgba(79, 194, 184, .34); transform: translateY(14%); }

/* ==========================================================================
   STILL (deterministic screenshots) / REDUCED MOTION
   ========================================================================== */
body.still .enter, body.still [data-reveal] { transition: none !important; opacity: 1 !important; translate: 0 0 !important; scale: 1 !important; }
body.still .ln > span { transition: none !important; translate: 0 0 !important; }
body.still .mandate .fill { transition: none; transform: scaleY(1); }
body.still .loader { display: none; }
body.still .grain, body.still .atmo i, body.still .marquee, body.still .hot button::before, body.still .flowline { animation: none !important; }
/* reduced motion keeps the interactive experience; only the ambient jitter goes */
@media (prefers-reduced-motion: reduce) {
  .grain, .atmo i { animation: none; }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1180px) {
  .hero__tag { display: none; }
  .hero__foot { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr 1fr; }
  .node--core { grid-column: 1 / -1; order: -1; border-radius: 20px; }
  .node:nth-child(n) { border-left: 0; padding-left: 0; border-top: 1px solid var(--p-line); }
  .node--core:nth-child(n) { padding: 22px; }
  .ifaces { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .iface:nth-child(3) { border-left: 0; padding-left: 0; }
  .triad { grid-template-columns: 1fr; }
  .b--patent, .b--pubs, .b--awards, .b--kpi { grid-column: span 12; }
  .b--photo { grid-column: span 6; min-height: 380px; }
  .core { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ext { grid-template-columns: 1fr; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts div:nth-child(3) { border-left: 0; padding-left: 0; }
  .scale__top { grid-template-columns: 1fr; gap: 0; }
  .scale__body { padding-top: 24px; }
}
@media (max-width: 900px) {
  .menu, .top__right .btn, .lang { display: none; }
  .burger { display: block; }
  .top__in { grid-template-columns: 1fr auto; }
}
@media (max-width: 740px) {
  body { font-size: 16px; }
  .logo__word { display: none !important; }
  .logo__mark { display: block; }
  .hero { padding-top: 48vh; }
  .hero__meta, .facts { grid-template-columns: 1fr; }
  .meta + .meta, .facts div + div { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 14px; }
  .meta, .facts div { padding-bottom: 14px; }
  .ghost { bottom: 40vh; }
  .split2, .now, .value { grid-template-columns: 1fr; gap: 28px; }
  .tiles { grid-template-columns: 1fr; }
  .sides { grid-template-columns: 1fr; }
  .side--waste { min-height: 460px; }
  .chain, .ifaces { grid-template-columns: 1fr; }
  .iface + .iface { border-left: 0; padding-left: 0; border-top: 1px solid var(--p-line); }
  .tech__grid { grid-template-columns: 1fr; }
  .tech__rail { position: relative; top: 0; }
  .tech__big { display: none; }
  .art { min-height: 0; }
  .io { grid-template-columns: 1fr; }
  .io > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .proof, .plain, .beds { grid-template-columns: 1fr; }
  .b--photo { grid-column: span 12; min-height: 320px; }
  .pubs li, .awards li { grid-template-columns: 1fr; gap: 4px; }
  .pubs .j { text-align: left; white-space: normal; }
  .bridge { grid-template-columns: 1fr; }
  .bcol h4, .bcol p, .bcol:last-child h4, .bcol:last-child p, .bcol--mid h4, .bcol--mid p { padding-inline: 0; }
  .bcol--mid { background: none; }
  .core { grid-template-columns: 1fr; }
  .ways { grid-template-columns: 1fr; }
  .way + .way { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 20px; margin-top: 20px; }
  .hot .lab { font-size: 13px; max-width: 170px; }
  .scale__in { padding-top: calc(var(--top-h) + 40px); }
  .scale__head br { display: none; }
  .scale__chain { grid-template-columns: 1fr; gap: 0; padding-top: 40px; }
  .scale__chain::before { left: 5px; right: auto; top: 45px; bottom: 6px; width: 1px; height: auto; background: rgba(255, 255, 255, .34); }
  .scale__chain li { padding: 0 0 16px 28px; }
  .schools__head { flex-direction: column; align-items: flex-start; }
  .foot__top { grid-template-columns: 1fr; }
}