/* Ethora Labs — ethoralabs.com */

:root {
  --ink: #0A0B0D;
  --ink-2: #23282D;
  --gray: #5B6670;
  --surface: #F3F7F8;
  --line: #E3E9EC;
  --line-2: #D3DCE0;
  --white: #FFFFFF;

  --tq: #19C2B3;   /* turquoise */
  --cy: #0E9BC4;   /* cyan */
  --ae: #1259C3;   /* Aegean blue */
  --gr: #12A36C;   /* data green */
  --deep: #0B2350;

  --font: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1240px;
  --gutter: 32px;
  --radius: 14px;
  --ease: cubic-bezier(.2, .7, .1, 1);
  --ease-io: cubic-bezier(.7, 0, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 400 17px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; color: inherit; }

::selection { background: rgba(25, 194, 179, .25); }

:focus-visible {
  outline: 2px solid var(--ae);
  outline-offset: 3px;
  border-radius: 6px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px;
  text-decoration: none; font-weight: 500;
}
.skip:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Type ---------- */

.display {
  font-weight: 600;
  font-size: clamp(46px, 6.3vw, 92px);
  line-height: .94;
  letter-spacing: -.055em;
}
.h2 {
  font-weight: 600;
  font-size: clamp(34px, 4.8vw, 64px);
  line-height: 1.02;
  letter-spacing: -.045em;
  max-width: 15ch;
}
.lede {
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.55;
  color: var(--gray);
  letter-spacing: -.01em;
}
.muted { color: var(--gray); }

.grad {
  background: linear-gradient(95deg, var(--ae) 0%, var(--cy) 52%, var(--gr) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: .06em; /* keep descenders inside the clip */
}

.kicker {
  display: flex; align-items: baseline; gap: 12px;
  font-size: 15px; font-weight: 500; color: var(--ink);
  margin-bottom: 22px;
}
.kicker span {
  font-family: var(--mono); font-size: 13px; color: var(--gray);
  padding-right: 12px; border-right: 1px solid var(--line-2);
}

/* ---------- Buttons ---------- */

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 50px; padding: 0 24px;
  border-radius: 12px;
  font-size: 16px; font-weight: 500; letter-spacing: -.01em;
  text-decoration: none; white-space: nowrap;
  transition: background-color .2s, color .2s, border-color .2s, transform .2s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ae); }
.btn--line { border: 1px solid var(--line-2); color: var(--ink); background: #fff; }
.btn--line:hover { border-color: var(--ink); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 15px; border-radius: 10px; }

.pill {
  display: inline-flex; align-items: center; gap: 9px;
  height: 32px; padding: 0 14px 0 11px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface);
  font-size: 14px; font-weight: 500; color: var(--ink-2);
  margin-bottom: 28px;
}
.pill i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gr);
  box-shadow: 0 0 0 3px rgba(18, 163, 108, .18);
}

.tag {
  display: inline-block; vertical-align: middle;
  margin-left: 8px; padding: 3px 9px;
  border-radius: 999px; border: 1px solid rgba(18, 89, 195, .25);
  background: rgba(18, 89, 195, .06);
  color: var(--ae); font-size: 12.5px; font-weight: 500; letter-spacing: 0;
  position: relative; top: -2px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand {
  display: inline-flex; align-items: center; gap: 11px;
  text-decoration: none; font-weight: 600; font-size: 18px; letter-spacing: -.025em;
}
.brand--sm { font-weight: 400; font-size: 14px; letter-spacing: 0; color: var(--gray); gap: 10px; }

.nav__list { display: flex; align-items: center; gap: 6px; }
.nav__list a:not(.btn) {
  display: block; padding: 8px 13px; border-radius: 9px;
  text-decoration: none; font-size: 15px; color: var(--ink-2);
  transition: background-color .2s, color .2s;
}
.nav__list a:not(.btn):hover { background: var(--surface); color: var(--ink); }
.nav__cta { margin-left: 10px; }

.nav__toggle {
  display: none;
  width: 44px; height: 44px; margin-right: -10px;
  border: 0; background: transparent; cursor: pointer; border-radius: 10px;
  position: relative;
}
.nav__toggle i {
  position: absolute; left: 12px; right: 12px; height: 2px; border-radius: 2px;
  background: var(--ink); transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav__toggle i:nth-of-type(1) { top: 17px; }
.nav__toggle i:nth-of-type(2) { top: 25px; }
.nav__toggle[aria-expanded="true"] i:nth-of-type(1) { top: 21px; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] i:nth-of-type(2) { top: 21px; transform: rotate(-45deg); }

/* ---------- Intro ---------- */

.intro { display: none; }
.has-intro .intro {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px;
  position: fixed; inset: 0; z-index: 100;
  background: #fff;
  cursor: pointer;
  animation: intro-lift .62s var(--ease-io) 1.48s forwards;
}
.intro__mark { display: flex; align-items: center; gap: 22px; }
.intro__bars { width: 62px; height: auto; }
.intro__bars rect { transform-box: fill-box; transform-origin: left center; transform: scaleX(0); }
.intro__bars .b1 { fill: var(--tq); animation: bar-in .62s var(--ease) .08s forwards; }
.intro__bars .b2 { fill: var(--cy); animation: bar-in .62s var(--ease) .2s forwards; }
.intro__bars .b3 { fill: var(--ae); animation: bar-in .62s var(--ease) .32s forwards; }

.intro__word, .intro__line { overflow: hidden; display: block; }
.intro__word span {
  display: block; font-size: 46px; font-weight: 600; letter-spacing: -.045em; line-height: 1.1;
  transform: translateY(105%); animation: word-in .7s var(--ease) .5s forwards;
}
.intro__line span {
  display: block; font-size: 15px; color: var(--gray); font-family: var(--mono);
  transform: translateY(110%); animation: word-in .6s var(--ease) .78s forwards;
}
.intro.is-done { display: none !important; }

@keyframes bar-in { to { transform: scaleX(1); } }
@keyframes word-in { to { transform: translateY(0); } }
@keyframes intro-lift {
  0% { transform: translateY(0); }
  100% { transform: translateY(-100%); visibility: hidden; }
}

/* Hero content rises in as the intro lifts away */
.has-intro .hero__head, .has-intro .hero__side, .has-intro .bench {
  opacity: 0; transform: translateY(18px);
  animation: rise .9s var(--ease) forwards;
}
.has-intro .hero__head { animation-delay: 1.66s; }
.has-intro .hero__side { animation-delay: 1.76s; }
.has-intro .bench { animation-delay: 1.86s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- Hero ---------- */

.hero { padding: clamp(40px, 7vh, 84px) 0 clamp(40px, 6vw, 72px); }
.hero__top {
  display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 48px 56px; align-items: end;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.hero__side { padding-bottom: 6px; }
.hero__side .lede { margin-bottom: 28px; max-width: 34em; }

/* The bench: the interactive record */
.bench {
  position: relative;
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr) 380px;
  gap: 24px;
  min-height: 540px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  overflow: hidden;
  isolation: isolate;
}
.bench__grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -1px -1px;
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 50% 50%, #000 30%, transparent 85%);
  mask-image: radial-gradient(ellipse 60% 70% at 50% 50%, #000 30%, transparent 85%);
  opacity: .9;
}
.bench__note { margin-top: 14px; font-size: 13.5px; color: var(--gray); }

/* Layer list */
.layers { display: flex; flex-direction: column; justify-content: center; }
.layers__title { font-size: 13px; color: var(--gray); margin: 0 0 12px 10px; }
.layers__list { display: flex; flex-direction: column-reverse; gap: 2px; }
.layer-btn {
  display: grid; grid-template-columns: 28px 1fr; align-items: center; gap: 6px;
  width: 100%; padding: 8px 10px;
  border: 0; border-radius: 10px; background: transparent;
  text-align: left; cursor: pointer;
  font-size: 15px; color: var(--gray);
  transition: background-color .2s, color .2s;
}
.layer-btn__no { font-family: var(--mono); font-size: 12px; color: var(--gray); opacity: .8; }
.layer-btn__name { display: flex; align-items: center; gap: 10px; }
.layer-btn__name::before {
  content: ""; width: 10px; height: 10px; border-radius: 3px; flex: none;
  background: var(--c, var(--ink));
  transition: width .3s var(--ease);
}
.layer-btn:hover { color: var(--ink); background: rgba(255, 255, 255, .7); }
.layer-btn[aria-pressed="true"] { color: var(--ink); background: #fff; box-shadow: 0 1px 0 var(--line), 0 0 0 1px var(--line); font-weight: 500; }
.layer-btn[aria-pressed="true"] .layer-btn__name::before { width: 22px; }

/* 3D stack */
.stack-stage {
  position: relative;
  display: grid; place-items: center;
  perspective: 1600px;
  perspective-origin: 50% 30%;
  min-height: 480px;
  cursor: pointer;
  touch-action: manipulation;
}
.stack-stage::after { /* floor shadow */
  content: ""; position: absolute; left: 50%; top: 66%;
  width: 70%; height: 22%; transform: translate(-50%, 0);
  background: radial-gradient(ellipse at center, rgba(11, 35, 80, .22), transparent 70%);
  filter: blur(14px); z-index: 0; pointer-events: none;
}
.stack {
  position: relative; z-index: 1;
  width: 290px; height: 200px;
  transform-style: preserve-3d;
  transform: translateY(96px) rotateX(58deg) rotateZ(-38deg);
}
.plate {
  position: absolute; inset: 0;
  border-radius: 18px;
  transform: translateZ(calc(var(--i) * 30px));
  transition: transform .55s var(--ease), opacity .4s, filter .4s;
  pointer-events: none;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, .22), rgba(255, 255, 255, 0) 55%),
    color-mix(in srgb, var(--c) 84%, transparent);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, .38),
    0 1px 0 rgba(255, 255, 255, .5);
}
@supports not (background: color-mix(in srgb, red 50%, transparent)) {
  .plate { background: linear-gradient(140deg, rgba(255, 255, 255, .22), rgba(255, 255, 255, 0) 55%), var(--c); opacity: .9; }
}
.plate::before { /* data texture */
  content: ""; position: absolute; inset: 14px; border-radius: 8px;
  background-image:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .16) 0 1px, transparent 1px 18px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .1) 0 1px, transparent 1px 18px);
  opacity: 0; transition: opacity .4s;
}
.plate__label {
  position: absolute; left: 18px; bottom: 14px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .02em;
  color: rgba(255, 255, 255, .92);
  white-space: nowrap;
}
.plate__label b { font-weight: 500; opacity: .65; margin-right: 8px; }

.stack.has-active .plate { opacity: .62; }
.stack .plate.is-active {
  opacity: 1;
  transform: translateZ(calc(var(--i) * 30px + 44px)) translate(-14px, -14px);
  box-shadow:
    inset 0 0 0 1.5px rgba(255, 255, 255, .7),
    0 30px 50px -10px rgba(11, 35, 80, .35);
}
.stack .plate.is-active::before { opacity: 1; }
.stack .plate.is-above { transform: translateZ(calc(var(--i) * 30px + 62px)); opacity: .3; }

/* Inspector */
.inspector {
  align-self: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 1px 2px rgba(10, 11, 13, .04), 0 18px 40px -24px rgba(11, 35, 80, .25);
}
.inspector__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 8px; }
.inspector__idx {
  font-family: var(--mono); font-size: 12px; color: #fff;
  background: var(--c, var(--ink)); border-radius: 6px; padding: 2px 7px;
  transition: background-color .3s;
}
.inspector__name { font-size: 22px; font-weight: 600; letter-spacing: -.03em; line-height: 1.2; }
.inspector__desc { color: var(--gray); font-size: 15px; line-height: 1.5; min-height: 3em; margin-bottom: 18px; }
.inspector__rec { border-top: 1px solid var(--line); padding-top: 14px; }
.inspector__label { font-size: 12.5px; color: var(--gray); margin-bottom: 10px; }
.inspector__fields { display: grid; gap: 8px; }
.inspector__fields div {
  display: grid; grid-template-columns: 92px 1fr; gap: 12px;
  font-size: 13.5px; line-height: 1.45;
}
.inspector__fields dt { font-family: var(--mono); font-size: 12px; color: var(--gray); padding-top: 1px; }
.inspector__fields dd { color: var(--ink-2); }
.inspector.is-swapping .inspector__desc,
.inspector.is-swapping .inspector__fields { opacity: 0; transform: translateY(4px); }
.inspector__desc, .inspector__fields { transition: opacity .25s, transform .25s var(--ease); }

/* ---------- Proof strip ---------- */

.proof { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof__list { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof__list li {
  display: flex; flex-direction: column; gap: 4px;
  padding: 26px 24px 28px;
  border-left: 1px solid var(--line);
  font-size: 15px; line-height: 1.45; color: var(--gray);
}
.proof__list li:first-child { border-left: 0; padding-left: 0; }
.proof__list strong { font-size: 17px; font-weight: 600; color: var(--ink); letter-spacing: -.015em; }
.proof__bar { width: 28px; height: 4px; border-radius: 4px; margin-bottom: 14px; }
.s1 { background: var(--ae); }
.s2 { background: var(--cy); }
.s3 { background: var(--tq); }
.s4 { background: var(--gr); }

/* ---------- Sections ---------- */

.section { padding: clamp(80px, 11vw, 148px) 0; }
.split-head {
  display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 24px 64px; align-items: end;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.split-head .muted { font-size: 17px; max-width: 32em; }

/* Thesis */
.thesis .h2 { margin-bottom: clamp(40px, 5vw, 64px); max-width: none; }
.thesis__grid {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 48px 72px; align-items: center;
}
.chart {
  padding: 24px 24px 18px;
  border: 1px solid var(--line); border-radius: 20px;
  background: #fff;
}
.chart svg { width: 100%; height: auto; overflow: visible; }
.chart__axes line { stroke: var(--line-2); stroke-width: 1.5; }
.chart__axis { font: 400 13px var(--mono); fill: var(--gray); }
.chart__line { fill: none; stroke-width: 3.5; stroke-linecap: round; }
.chart__line--soc { stroke: var(--gr); stroke-dasharray: 1 9; stroke-width: 4; }
.chart__lab { font: 600 16px var(--font); fill: var(--ae); letter-spacing: -.01em; }
.chart__lab--g { fill: #0E7F55; }
.chart__sub { font: 400 13px var(--font); fill: var(--gray); }
.chart figcaption { margin-top: 10px; font-size: 13px; color: var(--gray); }

.js .chart__line--tech { stroke-dasharray: 760; stroke-dashoffset: 760; }
.js .chart__gap, .js .chart__dot, .js .chart__lab, .js .chart__sub { opacity: 0; }
.js .chart__line--soc { opacity: 0; }
.chart.in .chart__line--tech { stroke-dashoffset: 0; transition: stroke-dashoffset 1.6s var(--ease) .1s; }
.chart.in .chart__line--soc { opacity: 1; transition: opacity .8s .2s; }
.chart.in .chart__gap { opacity: 1; transition: opacity .9s 1.2s; }
.chart.in .chart__dot, .chart.in .chart__lab, .chart.in .chart__sub { opacity: 1; transition: opacity .6s 1.4s; }

.thesis__text p { color: var(--gray); margin-bottom: 18px; }
.thesis__text p:last-child { margin-bottom: 0; }
.thesis__lead {
  color: var(--ink) !important;
  font-size: clamp(21px, 2vw, 26px); line-height: 1.32; letter-spacing: -.025em; font-weight: 500;
  margin-bottom: 24px !important;
}

.contrast {
  display: grid; grid-template-columns: 1fr 1fr;
  margin-top: clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--ink);
}
.contrast__col { padding: 26px 40px 0 0; }
.contrast__col + .contrast__col { padding: 26px 0 0 40px; border-left: 1px solid var(--line); }
.contrast h3 {
  display: flex; align-items: center; gap: 12px;
  font-size: 22px; font-weight: 600; letter-spacing: -.03em; margin-bottom: 14px;
}
.contrast h3::before { content: ""; width: 14px; height: 14px; border-radius: 4px; background: var(--ae); }
.contrast__col--g h3::before { background: var(--gr); }
.contrast li { position: relative; padding: 10px 0 10px 0; border-bottom: 1px solid var(--line); color: var(--ink-2); font-size: 16px; }
.contrast li:last-child { border-bottom: 0; }

/* Deliver */
.deliver { background: linear-gradient(var(--surface), var(--surface)) no-repeat; background-size: 100% 100%; }
.offer { border-top: 1px solid var(--line-2); }
.offer__row {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1.05fr) minmax(0, 1.5fr) 190px;
  gap: 24px; align-items: baseline;
  padding: 30px 0 32px;
  border-bottom: 1px solid var(--line-2);
}
.offer__row::before {
  content: ""; position: absolute; left: 0; top: -1px; height: 2px; width: 0;
  background: var(--k, var(--ae));
  transition: width .6s var(--ease);
}
.offer__row:hover::before { width: 100%; }
.offer__row:nth-child(1) { --k: var(--deep); }
.offer__row:nth-child(2) { --k: var(--ae); }
.offer__row:nth-child(3) { --k: var(--cy); }
.offer__row:nth-child(4) { --k: var(--gr); }
.offer__no { font-family: var(--mono); font-size: 13px; color: var(--gray); }
.offer__name { font-size: clamp(22px, 2.1vw, 28px); font-weight: 600; letter-spacing: -.035em; line-height: 1.15; }
.offer__desc { color: var(--gray); font-size: 16.5px; max-width: 34em; }
.offer__use { font-size: 14px; color: var(--ink-2); text-align: right; }

/* Method */
.flow {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  counter-reset: step;
}
.flow__step {
  position: relative;
  padding: 26px 22px 0 0;
}
.flow__step::before { /* segment of a continuous rule */
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px;
  background: var(--k);
}
.flow__step:first-child::before { border-radius: 4px 0 0 4px; }
.flow__step:last-child::before { border-radius: 0 4px 4px 0; }
.flow__step:nth-child(1) { --k: var(--ink); }
.flow__step:nth-child(2) { --k: var(--deep); }
.flow__step:nth-child(3) { --k: var(--ae); }
.flow__step:nth-child(4) { --k: var(--cy); }
.flow__step:nth-child(5) { --k: var(--tq); }
.flow__step:nth-child(6) { --k: var(--gr); }
.flow__no {
  display: block; font-family: var(--mono); font-size: 13px; color: var(--gray); margin-bottom: 22px;
}
.flow__step h3 { font-size: 18px; font-weight: 600; letter-spacing: -.02em; line-height: 1.25; margin-bottom: 10px; min-height: 2.5em; }
.flow__step p { font-size: 15px; line-height: 1.5; color: var(--gray); }

/* Disciplines */
.strata { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.stratum { padding-top: 22px; border-top: 4px solid; }
.stratum--now { border-image: linear-gradient(90deg, var(--ae), var(--cy), var(--tq)) 1; }
.stratum--next { border-color: rgba(14, 155, 196, .4); }
.stratum--plan { border-top-style: dashed; border-top-width: 2px; border-color: var(--line-2); padding-top: 24px; }
.stratum__when { font-size: 14px; color: var(--gray); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.stratum--now .stratum__when::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--gr); box-shadow: 0 0 0 3px rgba(18, 163, 108, .18); }
.stratum li {
  font-size: clamp(22px, 2.2vw, 30px); font-weight: 600; letter-spacing: -.035em; line-height: 1.18;
  padding: 6px 0;
}
.stratum--next li { color: var(--ink-2); }
.stratum--plan li { color: var(--gray); font-weight: 500; }

.traditions {
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px 48px; align-items: center;
  margin-top: clamp(48px, 6vw, 72px);
  padding: 28px 32px;
  border-radius: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.traditions__lead { font-size: 19px; font-weight: 500; letter-spacing: -.02em; }
.traditions__list { display: flex; flex-wrap: wrap; gap: 8px; grid-row: span 2; justify-content: flex-end; }
.traditions__list li {
  padding: 8px 14px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line-2);
  font-size: 15px; font-weight: 500;
}
.traditions .muted { font-size: 15px; }

/* Contact */
.contact { padding-top: 0; }
.contact__inner {
  display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 48px 80px; align-items: center;
  border-top: 1px solid var(--line);
  padding-top: clamp(72px, 9vw, 120px);
}
.contact__art { display: flex; flex-direction: column; gap: clamp(14px, 1.6vw, 20px); max-width: 380px; }
.contact__art i { display: block; height: clamp(34px, 3.6vw, 52px); border-radius: 999px; }
.contact__art i:nth-child(1) { background: var(--tq); width: 100%; }
.contact__art i:nth-child(2) { background: var(--cy); width: 62%; }
.contact__art i:nth-child(3) { background: var(--ae); width: 100%; }
.js .contact__art i { transform: scaleX(0); transform-origin: left center; transition: transform 1s var(--ease); }
.js .contact__art.in i { transform: scaleX(1); }
.js .contact__art.in i:nth-child(2) { transition-delay: .12s; }
.js .contact__art.in i:nth-child(3) { transition-delay: .24s; }

.contact .h2 { max-width: 17ch; margin-bottom: 20px; }
.contact .lede { margin-bottom: 30px; max-width: 32em; }
.contact__experts { margin-top: 28px; font-size: 15px; color: var(--gray); max-width: 36em; }
.contact__mail { margin-top: 18px; font-size: 15px; }
.contact__mail a { text-decoration-color: var(--line-2); text-underline-offset: 4px; }
.contact__mail a:hover { text-decoration-color: var(--ae); color: var(--ae); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); }
.site-footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 84px; padding-top: 16px; padding-bottom: 16px; }
.site-footer__links { display: flex; gap: 24px; font-size: 14px; }
.site-footer__links a { color: var(--gray); text-decoration: none; }
.site-footer__links a:hover { color: var(--ink); }

/* Scroll reveal */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */

@media (max-width: 1180px) {
  .bench { grid-template-columns: 190px minmax(0, 1fr) 330px; padding: 22px; gap: 16px; }
  .stack { width: 250px; height: 172px; }
  .plate { transform: translateZ(calc(var(--i) * 26px)); }
  .stack .plate.is-active { transform: translateZ(calc(var(--i) * 26px + 40px)) translate(-12px, -12px); }
  .stack .plate.is-above { transform: translateZ(calc(var(--i) * 26px + 70px)); }
  .flow { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 44px; }
  .flow__step:nth-child(3)::before { border-radius: 0 4px 4px 0; }
  .flow__step:nth-child(4)::before { border-radius: 4px 0 0 4px; }
}

@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .hero__top, .split-head, .thesis__grid, .contact__inner { grid-template-columns: 1fr; }
  .hero__top { gap: 28px; }
  .bench {
    grid-template-columns: 1fr;
    grid-template-areas: "stage" "layers" "inspector";
    min-height: 0; padding: 16px;
  }
  .stack-stage { grid-area: stage; min-height: 360px; }
  .layers { grid-area: layers; }
  .inspector { grid-area: inspector; }
  .layers__title { display: none; }
  .layers__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px; }
  .layer-btn { background: rgba(255, 255, 255, .6); }
  .offer__row { grid-template-columns: 48px 1fr; }
  .offer__desc, .offer__use { grid-column: 2; }
  .offer__use { text-align: left; }
  .proof__list { grid-template-columns: 1fr 1fr; }
  .proof__list li:nth-child(3) { border-left: 0; padding-left: 0; }
  .proof__list li:nth-child(n+3) { border-top: 1px solid var(--line); }
  .strata { grid-template-columns: 1fr; gap: 36px; }
  .traditions { grid-template-columns: 1fr; }
  .traditions__list { justify-content: flex-start; grid-row: auto; }
  .contact__art { max-width: 280px; gap: 16px; }
  .contact__art i { height: 40px; }
}

@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__list {
    position: absolute; left: 0; right: 0; top: 72px;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px var(--gutter) 20px;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 30px -20px rgba(10, 11, 13, .15);
    display: none;
  }
  .nav__list.is-open { display: flex; }
  .nav__list a:not(.btn) { padding: 14px 4px; font-size: 17px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav__cta { margin: 16px 0 0; }
  .nav__cta .btn { width: 100%; height: 48px; }
  .contrast { grid-template-columns: 1fr; }
  .contrast__col { padding-right: 0; }
  .contrast__col + .contrast__col { padding: 26px 0 0; border-left: 0; border-top: 1px solid var(--line); margin-top: 18px; }
  .flow { grid-template-columns: 1fr; row-gap: 0; }
  .flow__step { padding: 0 0 30px 28px; }
  .flow__step::before { top: 0; bottom: 0; left: 0; right: auto; width: 4px; height: auto; border-radius: 0 !important; }
  .flow__step:first-child::before { border-radius: 4px 4px 0 0 !important; }
  .flow__step:last-child::before { border-radius: 0 0 4px 4px !important; }
  .flow__no { margin-bottom: 6px; }
  .flow__step h3 { min-height: 0; }
  .site-footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  :root { --gutter: 18px; }
  body { font-size: 16px; }
  .display { font-size: clamp(44px, 13.4vw, 64px); }
  .actions .btn { flex: 1 1 auto; }
  .stack-stage { min-height: 300px; perspective: 1200px; }
  .stack { width: 200px; height: 140px; transform: translateY(54px) rotateX(58deg) rotateZ(-38deg); }
  .plate { transform: translateZ(calc(var(--i) * 20px)); border-radius: 13px; }
  .stack .plate.is-active { transform: translateZ(calc(var(--i) * 20px + 30px)) translate(-8px, -8px); }
  .stack .plate.is-above { transform: translateZ(calc(var(--i) * 20px + 54px)); }
  .plate__label { font-size: 10px; left: 12px; bottom: 9px; }
  .inspector { padding: 18px; }
  .inspector__fields div { grid-template-columns: 1fr; gap: 2px; }
  .proof__list { grid-template-columns: 1fr; }
  .proof__list li { border-left: 0 !important; padding: 20px 0 !important; }
  .proof__list li + li { border-top: 1px solid var(--line); }
  .proof__bar { margin-bottom: 10px; }
  .traditions { padding: 22px 20px; }
  .intro__word span { font-size: 34px; }
  .intro__bars { width: 46px; }
  .intro__mark { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-delay: 0s !important; }
  .js .reveal { opacity: 1; transform: none; }
  .js .chart__line--tech { stroke-dashoffset: 0; }
  .js .chart__gap, .js .chart__dot, .js .chart__lab, .js .chart__sub, .js .chart__line--soc { opacity: 1; }
  .js .contact__art i { transform: none; }
}

@media (max-width: 520px) {
  .layer-btn { grid-template-columns: 20px 1fr; padding: 10px 8px; font-size: 13.5px; white-space: nowrap; }
  .layer-btn__name { gap: 8px; }
}

/* 404 */
.nf { min-height: 100vh; display: flex; flex-direction: column; }
.nf__main { flex: 1; display: flex; flex-direction: column; justify-content: center; padding-top: 48px; padding-bottom: 96px; }
.nf .h2 { margin-bottom: 18px; }
.nf .lede { margin-bottom: 30px; max-width: 30em; }
.nf__strata { display: flex; flex-direction: column; gap: 10px; width: 120px; margin-bottom: 40px; }
.nf__strata i { display: block; height: 14px; border-radius: 7px; }
.nf__strata i:nth-child(1) { background: var(--tq); }
.nf__strata i:nth-child(2) { width: 62%; border: 2px dashed var(--line-2); }
.nf__strata i:nth-child(3) { background: var(--ae); }