/* Netcat AI: an editorial system with a working, interactive material. */

@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("assets/fonts/sora-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("assets/fonts/source-sans-3-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("assets/fonts/geist-mono-latin.woff2") format("woff2");
}

:root {
  /* palette */
  --white:      #f2f4f1;
  --carbon:     #202623;
  --night:      #090e13;
  --ink-2:      #5a625e;
  --silver:     #b8c4c5;
  --blue:       #234ae8;
  --coral:      #c44d40;
  --coral-ink:  #a83a2e;
  --green:      #406b5b;
  --hair-on-white: #20262329;
  --hair-on-carbon: #f2f4f129;

  /* type */
  --font-display: "Sora", "Helvetica Neue", sans-serif;
  --font-sans: "Source Sans 3", -apple-system, "Helvetica Neue", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", monospace;

  --text-body:   19px;
  --leading-body: 1.55;
  --measure:     64ch;
  --text-label:  12px;
  --tracking-label: .045em;
  --text-caption: 14px;
  --tracking-display: -.035em;
  --text-title: clamp(34px, 4vw, 64px);

  /* motion */
  --ease-out-3: cubic-bezier(.22, 1, .36, 1);
  --ease-out-2: cubic-bezier(.25, 1, .5, 1);
  --dur-reveal: .7s;
  --dur-settle: .9s;

  /* layout */
  --margin: clamp(22px, 5vw, 88px);
  --page-edge: max(var(--margin), calc((100vw - 1440px) / 2));
  --gutter: 24px;
  --header-h: 96px;
  --chrome-h: calc(48px + env(safe-area-inset-bottom, 0px));
  --layer-content: 1;
  --layer-header: 20;
  --layer-chrome: 21;
  --layer-progress: 22;
  --layer-skip: 30;
}

@media (pointer: coarse) {
  :root { --text-body: 18px; --gutter: 20px; }
}

/* ---------- modes ---------- */

:root,
[data-mode="paper"] {
  --bg: var(--white);
  --bg-2: #e8ebe7;
  --fg: var(--carbon);
  --fg-2: var(--ink-2);
  --hair: var(--hair-on-white);
  --accent-text: var(--blue);
  --error-text: var(--coral-ink);
  --focus: var(--blue);
}

[data-mode="carbon"],
[data-mode="night"] {
  --bg: var(--carbon);
  --bg-2: #1a1f1d;
  --fg: var(--white);
  --fg-2: var(--silver);
  --hair: var(--hair-on-carbon);
  --accent-text: var(--white);
  --error-text: var(--white);
  --focus: var(--white);
}

[data-mode="night"] { --bg: var(--night); }

[data-mode="blue"] {
  --bg: var(--blue);
  --bg-2: #1c3bc4;
  --fg: var(--white);
  --fg-2: rgba(255, 255, 255, .8);
  --hair: var(--hair-on-carbon);
  --accent-text: var(--white);
  --error-text: var(--white);
  --focus: var(--white);
}

/* ---------- base ---------- */

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

html {
  background: var(--bg);
  color: var(--fg);
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  scroll-padding-bottom: calc(var(--chrome-h) + 12px);
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
}

main { flex: 1; position: relative; z-index: var(--layer-content); }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }
figure { margin: 0; }
ol, ul { margin: 0; padding: 0; list-style: none; }
dl, dt, dd { margin: 0; }
img, svg, canvas { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s var(--ease-out-3);
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

::selection { background: var(--blue); color: var(--white); }

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

.skip {
  position: absolute;
  top: 16px;
  left: -9999px;
  z-index: var(--layer-skip);
  background: var(--carbon);
  color: var(--white);
  padding: 8px 16px;
  font-size: var(--text-caption);
}
.skip:focus { left: 16px; }

/* ---------- primitives ---------- */

.label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--fg-2);
}

.caption {
  font-size: var(--text-caption);
  line-height: 1.45;
  color: var(--fg-2);
}

.prose p {
  max-width: var(--measure);
  color: var(--fg-2);
}
.prose p:first-child { margin-top: 0; }

/* scroll progress hair */
.hair {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--blue);
  z-index: var(--layer-progress);
  pointer-events: none;
  transition: width .12s linear;
}

/* ---------- header ---------- */

.site-header {
  --chrome-fade: #f2f4f1f5;
  --fg: var(--carbon);
  --fg-2: var(--ink-2);
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--layer-header);
  height: var(--header-h);
  padding: 0 var(--page-edge);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--fg);
  background: linear-gradient(180deg, var(--chrome-fade) 0%, color-mix(in srgb, var(--chrome-fade) 65%, transparent) 55%, transparent 100%);
  transition: color .25s var(--ease-out-3);
}

html[data-header-mode="carbon"] .site-header,
html[data-header-mode="night"] .site-header {
  --chrome-fade: #202623f5;
  --fg: var(--white);
  --fg-2: var(--silver);
  --focus: var(--white);
  color: var(--white);
}
html[data-header-mode="night"] .site-header { --chrome-fade: #090e13f5; }

html[data-header-mode="blue"] .site-header {
  --chrome-fade: #234ae8f2;
  --fg: var(--white);
  --fg-2: rgba(255, 255, 255, .82);
  --focus: var(--white);
  color: var(--white);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  white-space: nowrap;
}
.brandLogo { width: 166px; height: auto; flex: none; }
html[data-header-mode="carbon"] .site-header .brandLogo,
html[data-header-mode="night"] .site-header .brandLogo,
html[data-header-mode="blue"] .site-header .brandLogo,
.footerWordmark .brandLogo { filter: brightness(0) invert(1); }

.wordmark small {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .02em;
  color: var(--fg-2);
  font-weight: 400;
}

.nav ul {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2vw, 32px);
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-family: var(--font-sans);
  font-size: 16px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--fg-2);
  position: relative;
}
.nav a:hover { color: var(--fg); }
.navContact { gap: 9px; color: var(--fg) !important; }
.nav a.is-active { color: var(--fg); }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 10px;
  height: 1px;
  background: currentColor;
}

.index-open {
  display: none;
  font-family: var(--font-mono);
  font-size: 12px;
  gap: 16px;
  min-height: 44px;
  align-items: center;
}
.menuGlyph { display: grid; gap: 5px; width: 22px; }
.menuGlyph i { height: 1px; width: 100%; background: currentColor; }

/* ---------- opening ---------- */

.opening {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  padding: calc(var(--header-h) + 30px) var(--page-edge) var(--chrome-h);
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
}

.openingNote {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--fg-2);
}
.openingNote > span:last-child { font-family: var(--font-sans); font-size: 15px; text-align: right; }

.openingMain {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 4vw, 64px);
  margin-block: clamp(28px, 3vw, 44px) 24px;
}
.openingCopy { padding-bottom: 18px; }
.heroCategory { margin-bottom: 22px; font-size: 16px; color: var(--blue); }

.openingTitle {
  font-size: clamp(48px, 5.7vw, 96px);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -.04em;
}

.titleFirst,
.titleLast {
  display: block;
  text-wrap: balance;
}
.titleLast { color: var(--blue); }
.heroLede { max-width: 47ch; margin-top: 28px; font-size: clamp(19px, 1.5vw, 23px); line-height: 1.5; color: var(--fg-2); }
.heroActions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px 28px; margin-top: 34px; }
.heroCta { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; padding: 16px 22px; min-height: 54px; background: var(--blue); color: var(--white); font-size: 17px; font-weight: 500; border-radius: 4px; transition: background .25s var(--ease-out-3); }
.heroCta > span:last-child { transition: transform .3s var(--ease-out-3); }
.heroCta:hover { background: var(--night); }
.heroCta:hover > span:last-child { transform: translate(2px, -2px); }
.heroExplore { display: inline-flex; align-items: center; gap: 16px; min-height: 44px; font-size: 17px; }
.heroExplore:hover { color: var(--blue); }
.heroResponse { display: flex; align-items: baseline; gap: 9px; margin-top: 18px; color: var(--fg-2); font-size: 14px; }
.statusDot { width: 5px; height: 5px; background: var(--green); border-radius: 50%; flex: none; }

.heroFigure { min-width: 0; }
.figureHead { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-block: 13px; border-bottom: 1px solid var(--hair); font-family: var(--font-mono); font-size: 11px; color: var(--fg-2); }
.figureStep { color: var(--blue); font-variant-numeric: tabular-nums; }

.continuum {
  position: relative;
  height: clamp(300px, 26vw, 420px);
  overflow: hidden;
}
.continuum canvas, .meshFallback { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.continuum canvas { opacity: 0; }
.heroFigure.is-rendered .continuum canvas { opacity: 1; }
.heroFigure.is-rendered .meshFallback { visibility: hidden; }
.heroFigure:not(.is-rendered) .poseButtons { display: none; }
.meshCoordinate { position: absolute; font-family: var(--font-mono); font-size: 10px; color: var(--ink-2); pointer-events: none; }
.coordinateTop { left: 0; top: 18px; }
.coordinateBottom { right: 0; bottom: 12px; }
.continuum::before, .continuum::after { content: ""; position: absolute; width: 10px; height: 10px; border: 1px solid var(--hair); pointer-events: none; }
.continuum::before { left: 0; bottom: 20px; border-top: 0; border-right: 0; }
.continuum::after { right: 0; top: 20px; border-bottom: 0; border-left: 0; }

.shapeControls {
  display: grid;
  gap: 16px;
  border-top: 1px solid var(--hair);
}

.poseButtons { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }

.pose {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 0 9px;
  min-height: 48px;
  border-top: 2px solid transparent;
  margin-top: -1px;
  font-size: 16px;
  color: var(--fg-2);
  transition: border-color .25s var(--ease-out-3), color .25s var(--ease-out-3);
}
.pose:hover { color: var(--fg); }
.pose.is-active { border-color: var(--blue); color: var(--blue); }
.poseIndex { font-family: var(--font-mono); font-size: 10px; color: var(--fg-2); }

.poseThought {
  font-size: 15px;
  line-height: 1.45;
  color: var(--fg-2);
  min-height: 2.9em;
  text-align: center;
}

.openingBottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding-block: 19px;
  border-top: 1px solid var(--hair);
}
.openingBottom p {
  font-size: 15px;
  line-height: 1.5;
  color: var(--fg-2);
}

.begin {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 15px;
  flex-shrink: 0;
}
.beginArrow {
  width: 34px;
  height: 34px;
  border: 1px solid var(--hair);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 19px;
  line-height: 1;
  transition: background .35s var(--ease-out-3), color .35s var(--ease-out-3),
              transform .6s var(--ease-out-3);
}
.begin:hover .beginArrow {
  background: var(--fg);
  color: var(--bg);
  transform: translateY(2px);
}

/* ---------- prologue ---------- */

.prologue {
  position: relative;
  background: var(--bg);
  color: var(--fg);
  border-top: 1px solid var(--hair);
  padding: clamp(76px, 9vw, 136px) var(--page-edge);
}

.prologueFrame {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(32px, 6vw, 96px);
  position: relative;
  max-width: 1440px;
  margin-inline: auto;
}

.prologueSide {
  max-width: 18ch;
  font-size: 24px;
  line-height: 1.35;
  color: var(--fg-2);
}

.prologueCopy {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.3vw, 68px);
  line-height: 1.18;
  letter-spacing: -.035em;
  font-weight: 500;
}
.prologueCopy p { margin-bottom: .18em; }
.prologueCopy p:last-child { margin-bottom: 0; }
.prologueCopy span { color: var(--accent-text); }

.prologueNote {
  grid-column: 2;
  margin-top: 0;
  max-width: 60ch;
  color: var(--fg-2);
  font-size: 19px;
  line-height: 1.55;
}

.prologueLink {
  position: absolute;
  left: 0;
  bottom: 0;
  font-size: 44px;
  line-height: 1;
  color: var(--fg);
  transition: transform .4s var(--ease-out-3), color .2s;
}
.prologueLink:hover { color: var(--accent-text); transform: translate(6px, 6px); }

/* ---------- chapter + stage ---------- */

.chapter { position: relative; }

.stage {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(72px, 7vw, 112px) var(--page-edge) 68px;
  background: var(--bg);
  color: var(--fg);
  border-top: 1px solid var(--hair);
}

.stage:first-child { border-top: 0; }

.chapterMeta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 12px;
  margin-bottom: 38px;
}
.metaName { margin-left: 22px; }
.metaIndex { font-variant-numeric: tabular-nums; }

.stageInner {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
  gap: 0 clamp(32px, 6vw, 96px);
  align-items: end;
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
}

.stageTitle {
  font-size: var(--text-title);
  line-height: 1.14;
  max-width: 20ch;
}

.stageLead {
  max-width: 49ch;
  font-size: clamp(18px, 1.4vw, 21px);
  line-height: 1.55;
  color: var(--fg-2);
}

.stageCredit {
  max-width: 74ch;
  margin-top: 32px;
  font-size: 13px;
}

/* instrument */

.instrument { grid-column: 1 / -1; margin-top: clamp(38px, 4vw, 64px); }

.instrumentHead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hair);
}
.instrumentHead span:last-child { font-variant-numeric: tabular-nums; }

.rows > li {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 22px;
  align-items: baseline;
  padding: 23px 0;
  border-bottom: 1px solid var(--hair);
  font-size: clamp(16px, 1.35vw, 20px);
  line-height: 1.4;
}
.rows > li:hover { color: var(--accent-text); }

.rowNum {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
}

.rows-steps .rowBody {
  display: grid;
  gap: 9px;
}
.rows-steps strong {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.1vw, 30px);
  font-weight: 500;
  letter-spacing: -.02em;
  line-height: 1.12;
}
.rows-steps em {
  font-style: normal;
  font-size: 18px;
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 74ch;
}

.cellGrid {
  display: grid;
  gap: 1px;
  background: var(--hair);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.principleGrid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.caseGrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.cell {
  background: var(--bg);
  min-width: 0;
  padding: 28px 30px 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background .35s var(--ease-out-3);
}
.cell:hover { background: var(--bg-2); }

.cellNum {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
}
.cell h3 {
  font-size: clamp(22px, 1.7vw, 27px);
  font-weight: 500;
  letter-spacing: -.015em;
  line-height: 1.23;
}
.cell p {
  font-size: 18px;
  line-height: 1.55;
  color: var(--fg-2);
}
.cellOut {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--hair);
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 15px;
  color: var(--fg-2);
}
.cellOut .label { font-size: 10px; }

/* Services are a starting point plus three lines of development, not four boxes. */
.serviceGrid { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.5fr); gap: 0 42px; padding-top: 28px; }
.servicePrimary { grid-row: 1 / 4; padding: clamp(24px, 3vw, 42px); gap: 20px; color: var(--fg); }
.servicePrimary .cellNum { color: var(--white); }
.servicePrimary h3 { max-width: 12ch; font-size: clamp(28px, 2.6vw, 40px); line-height: 1.15; }
.servicePrimary:hover { background: var(--blue); }
.servicePrimary .cellOut { font-size: 16px; }
.auditDiagram { width: min(100%, 300px); height: auto; margin: auto; padding-block: 12px; }
.serviceLink { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 12px; min-height: 44px; font-size: 17px; color: var(--fg); }
.serviceLink span:last-child { transition: transform .3s var(--ease-out-3); }
.serviceLink:hover span:last-child { transform: translate(3px, -3px); }
.serviceRow { display: grid; grid-template-columns: 32px minmax(0, 1fr); align-content: start; gap: 14px 22px; padding: 28px 0; border-bottom: 1px solid var(--hair); background: transparent; }
.servicePrimary + .serviceRow { padding-top: 0; }
.serviceRow .cellNum { grid-column: 1; grid-row: 1; margin-top: 5px; }
.serviceRow h3, .serviceRow p { grid-column: 2; }
.serviceRow h3 { font-size: 28px; }
.serviceRow .cellOut { display: grid; grid-template-columns: 60px minmax(0, 1fr); gap: 12px; padding-top: 4px; margin-top: 0; border: 0; font-size: 15px; }
.serviceRow .cellOut .label { padding-top: 3px; }
.serviceRow:hover { background: transparent; }
.caseGrid .cell { display: grid; grid-template-columns: 36px minmax(0, 1fr); align-content: start; gap: 14px 20px; padding: 34px; }
.caseGrid .cellNum { grid-row: 1 / 3; margin-top: 5px; }
.caseGrid p { grid-column: 2; max-width: 43ch; }
.principleGrid .cell { gap: 18px; }
.principleGrid .cell:nth-child(2) { background: var(--bg-2); }

.studioInstrument { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.5fr); gap: 56px; padding-block: 32px 12px; border-top: 1px solid var(--hair); }
.studioSignature { display: flex; align-items: center; gap: 28px; }
.studioSignature img { width: clamp(64px, 7vw, 108px); height: auto; flex: none; }
.studioSignature p { max-width: 20ch; font-family: var(--font-display); font-size: 18px; line-height: 1.55; white-space: pre-line; }
.studioFacts .instrumentHead { font-size: 10px; }
.studioFacts .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.facts { border-bottom: 1px solid var(--hair); }
.fact {
  background: var(--bg);
  padding: 28px 24px 32px;
  transition: background .35s var(--ease-out-3);
}
.fact:hover { background: var(--bg-2); }
.facts dt {
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.facts dd {
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.45;
  color: var(--fg-2);
  max-width: 26ch;
}

/* faq */

.faq { border-bottom: 1px solid var(--hair); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 23px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(17px, 1.7vw, 23px);
  font-weight: 500;
  letter-spacing: -.02em;
  line-height: 1.28;
  transition: color .25s var(--ease-out-3);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--fg-2);
  transition: transform .35s var(--ease-out-3);
}
.faq[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--accent-text); }
.faqBody {
  overflow: hidden;
  animation: faqIn .4s var(--ease-out-3);
}
.faqBody p {
  margin: 0 0 26px;
  max-width: var(--measure);
  color: var(--fg-2);
  font-size: 17px;
}
@keyframes faqIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- reading room ---------- */

.readingRoom {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.4fr);
  gap: clamp(48px, 8vw, 140px);
  padding: clamp(64px, 6vw, 96px) var(--page-edge);
  background: var(--bg);
  color: var(--fg);
  border-top: 1px solid var(--hair);
}

.chapterIndex {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--fg-2);
  margin-bottom: 28px;
}

.understands {
  font-family: var(--font-display);
  font-size: clamp(26px, 2.25vw, 36px);
  line-height: 1.28;
  letter-spacing: -.035em;
  font-weight: 500;
  max-width: 22ch;
  margin-bottom: 35px;
}

.readDoor {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  max-width: 360px;
  padding-block: 16px;
  border-bottom: 1px solid var(--fg);
  font-size: 17px;
  transition: border-color .2s var(--ease-out-3), color .2s var(--ease-out-3);
}
.readDoor:hover { border-color: var(--accent-text); color: var(--accent-text); }

.chapterMain { font-size: var(--text-body); line-height: 1.6; }
.chapterSummary, .chapterMain { min-width: 0; }
.chapterMain p { max-width: var(--measure); color: var(--fg-2); }

.archive { margin-top: 60px; }
.archive > p {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.archive > p > span:last-child {
  color: var(--fg-2);
  font-size: 11px;
  letter-spacing: .1em;
}

.eventRow {
  display: grid;
  grid-template-columns: 15% 85%;
  align-items: baseline;
  padding: 15px 0;
  border-top: 1px solid var(--hair);
  font-size: 14px;
}
.eventYear {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
}
.eventRow a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
}
.eventRow a > span:first-child { font-size: 17px; }
.eventRow a > span:last-child { color: var(--fg-2); transition: transform .35s var(--ease-out-3); }
.eventRow a:hover { color: var(--accent-text); }
.eventRow a:hover > span:last-child { transform: translateX(5px); color: var(--accent-text); }

.flowExample { margin-top: 38px; padding: 28px 0; border-block: 1px solid var(--hair); }
.flowExample h3 { margin-top: 10px; font-size: 25px; line-height: 1.25; }
.flowSteps { display: grid; gap: 22px; margin-block: 30px; }
.flowSteps li { display: grid; grid-template-columns: 18px minmax(0, 1fr); column-gap: 18px; position: relative; }
.flowSteps li:not(:last-child)::after { content: ""; position: absolute; left: 6px; top: 22px; bottom: -22px; width: 1px; background: var(--hair); }
.flowNode { width: 13px; height: 13px; margin-top: 9px; border: 1px solid var(--blue); border-radius: 50%; }
.flowSteps li:nth-child(2) .flowNode { background: var(--blue); }
.flowSteps strong { font-size: 19px; font-weight: 600; }
.flowSteps p { grid-column: 2; font-size: 17px; }

/* ---------- contact ---------- */

.stageFormLink { align-self: start; display: inline-flex; align-items: center; gap: 30px; min-height: 48px; margin-top: 28px; padding-block: 10px; border-bottom: 1px solid var(--fg); font-size: 18px; }
.stageFormLink > span:last-child { transition: transform .3s var(--ease-out-3); }
.stageFormLink:hover > span:last-child { transform: translateY(3px); }

.contactInfo {
  margin-top: 44px;
  font-style: normal;
  display: grid;
  gap: 22px;
}
.contactInfo p { display: grid; gap: 7px; }
.contactInfo .label { font-size: 11px; }
.contactInfo a {
  justify-self: start;
  font-size: 17px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--hair);
  transition: border-color .2s var(--ease-out-3);
}
.contactInfo a:hover { border-color: var(--accent-text); color: var(--accent-text); }
.contactInfo p > span:last-child { font-size: 15px; color: var(--fg-2); }

.form {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--hair);
  display: grid;
  gap: 24px;
}

.field { display: grid; gap: 8px; }
.field label { font-size: 16px; color: var(--fg); }
.field .opt { color: var(--fg-2); }

.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink-2);
  color: var(--fg);
  font-family: inherit;
  font-size: 19px;
  padding: 12px 0;
  resize: vertical;
  transition: border-color .25s var(--ease-out-3);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--fg-2); opacity: 1; }
.field input:focus,
.field textarea:focus { border-color: var(--accent-text); }
.field.is-invalid input,
.field.is-invalid textarea { border-color: var(--error-text); }

.err { display: none; font-size: var(--text-caption); color: var(--error-text); }
.field.is-invalid .err { display: block; }
.field-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 17px 28px;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 500;
  border-radius: 4px;
  transition: background .3s var(--ease-out-3), border-color .3s var(--ease-out-3), color .3s var(--ease-out-3);
}
.btn:hover { background: var(--blue); border-color: var(--blue); color: var(--white); }
.btn:disabled { opacity: .55; cursor: default; }
.btn-block { width: 100%; }

.formNote { font-size: 15px; color: var(--fg-2); text-align: center; }
.formStatus {
  min-height: 1em;
  font-size: var(--text-caption);
  text-align: center;
  color: var(--fg);
}
.formStatus.is-error { color: var(--error-text); }

/* ---------- footer ---------- */

.site-footer {
  position: relative;
  z-index: var(--layer-content);
  padding: 76px var(--page-edge) calc(62px + var(--chrome-h));
  background: var(--bg);
  color: var(--fg);
  border-top: 1px solid var(--hair);
}

.footerInner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
  gap: 64px;
  align-items: start;
  max-width: 1440px;
  margin-inline: auto;
}

.footerWordmark .brandLogo { width: 184px; }
.footerWordmark small { display: none; }

.footerLine {
  margin-top: 22px;
  max-width: 44ch;
  color: var(--silver);
  font-size: 18px;
  line-height: 1.5;
}

.footerCta { margin-top: 28px; font-size: 21px; }
.footerCta a {
  padding-bottom: 4px;
  border-bottom: 1px solid var(--hair-on-carbon);
  transition: border-color .2s var(--ease-out-3);
}
.footerCta a:hover { border-color: var(--white); }

.footerGrid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 28px;
  font-size: 15px;
}
.footerGrid dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 18px;
}
.footerGrid dd { margin-bottom: 5px; }
.footerGrid dd a,
.footerGrid dd span {
  color: var(--white);
}
.footerGrid dd a { display: inline-block; padding-block: 4px; color: var(--silver); transition: color .2s var(--ease-out-3); overflow-wrap: anywhere; }
.footerGrid .copyright { color: var(--silver); }
.copyright #year { display: inline; }
.footerGrid dd a:hover { color: var(--white); }

/* ---------- chrome (bottom bar) ---------- */

.chromeFoot {
  --chrome-bg: var(--white);
  --fg-2: var(--ink-2);
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--layer-chrome);
  height: var(--chrome-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 var(--page-edge) env(safe-area-inset-bottom, 0px);
  background: var(--chrome-bg);
  color: var(--fg);
  border-top: 1px solid var(--hair-on-white);
}

html[data-footer-mode="carbon"] .chromeFoot,
html[data-footer-mode="night"] .chromeFoot {
  --chrome-bg: var(--carbon);
  --fg-2: var(--silver);
  --focus: var(--white);
  color: var(--white);
  border-top-color: var(--hair-on-carbon);
}
html[data-footer-mode="night"] .chromeFoot { --chrome-bg: var(--night); }

html[data-footer-mode="blue"] .chromeFoot {
  --chrome-bg: var(--blue);
  --fg-2: rgba(255, 255, 255, .85);
  --focus: var(--white);
  color: var(--white);
  border-top-color: var(--hair-on-carbon);
}

.indexToggle {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  font-size: 12px;
}

.indexIcon {
  display: flex;
  align-items: center;
  gap: 3px;
  width: 29px;
  height: 20px;
}
.indexIcon i {
  display: block;
  width: 1px;
  height: 20px;
  background: currentColor;
  transform: scaleY(.4);
  transition: transform .35s var(--ease-out-3);
}
.indexIcon i.is-active,
.indexToggle:hover .indexIcon i { transform: scaleY(1); }

.current {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
}

.toggles { display: flex; align-items: center; gap: 26px; }

.lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}
.lang-btn {
  color: var(--fg-2);
  font: inherit;
  letter-spacing: inherit;
  min-width: 32px;
  min-height: 44px;
  padding: 6px;
  transition: color .2s var(--ease-out-3);
}
.lang-btn:hover,
.lang-btn.is-active { color: inherit; }
.lang-sep { color: var(--fg-2); opacity: .6; }

.toggle {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  min-width: 44px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: inherit;
}

.wave { display: flex; align-items: center; gap: 2px; height: 14px; }
.wave i { display: block; width: 1px; height: 13px; background: currentColor; transform: scaleY(.3); }
.wave i:nth-child(2) { transform: scaleY(.85); }
.wave i:nth-child(3) { transform: scaleY(.54); }

.toggle[aria-pressed="true"] .wave i { animation: pulse 1.1s ease-in-out infinite alternate; }
.toggle[aria-pressed="true"] .wave i:nth-child(2) { animation-delay: -.7s; }
.toggle[aria-pressed="true"] .wave i:nth-child(3) { animation-delay: -.3s; }
.toggle[aria-pressed="true"] .wave i:nth-child(4) { animation-delay: -.5s; }
.toggle:disabled { cursor: default; }

@keyframes pulse {
  from { transform: scaleY(.23); }
  to   { transform: scaleY(1); }
}

/* ---------- chapter index dialog ---------- */

.indexDialog {
  border: 0;
  border-radius: 0;
  padding: 30px 4%;
  width: calc(100% - 24px);
  max-width: 1600px;
  height: calc(100svh - 24px);
  max-height: 1100px;
  overflow: auto;
  background: var(--white);
  color: var(--carbon);
  --focus: var(--blue);
}
.indexDialog::backdrop {
  background: #090e13ed;
}
.indexDialog:not([open]) { display: none; }

.menuTop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 35px;
  font-size: 14px;
}
.menuTop button {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 44px;
  font-size: 13px;
}
.menuTop button span:first-child {
  width: 44px;
  height: 44px;
  border: 1px solid var(--hair-on-white);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 27px;
  line-height: 1;
  transition: background .3s var(--ease-out-3), color .3s var(--ease-out-3);
}
.menuTop button:hover span:first-child { background: var(--carbon); color: var(--white); }

.menuColumns {
  display: grid;
  grid-template-columns: 31% 62%;
  gap: 7%;
  align-items: start;
}

.menuPreview {
  position: sticky;
  top: 0;
  display: grid;
  gap: 20px;
  align-content: start;
}
.menuPreview p {
  font-size: clamp(20px, 2vw, 32px);
  line-height: 1.2;
  letter-spacing: -.03em;
}

.rail { display: grid; }
.rail a {
  display: grid;
  grid-template-columns: 38px 1fr 30px;
  gap: 20px;
  align-items: baseline;
  padding: 21px 0;
  border-top: 1px solid var(--hair-on-white);
  font-size: clamp(28px, 3.7vw, 64px);
  font-family: var(--font-display);
  line-height: 1;
  letter-spacing: -.035em;
  transition: color .2s var(--ease-out-3);
}
.rail a > span:first-child {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.rail a > span:last-child {
  font-size: 25px;
  letter-spacing: 0;
  transition: transform .4s var(--ease-out-3);
}
.rail a:hover > span:last-child { transform: translate(4px, -4px); }
.rail a:hover,
.rail a[aria-current="true"] { color: var(--blue); }

.menuNote {
  margin-top: 40px;
  color: var(--ink-2);
  font-size: 13px;
}

/* ---------- reveal ---------- */

[data-reveal] {
  opacity: 1;
}
[data-reveal].is-in { animation: settleIn .7s var(--ease-out-3) both; }
@keyframes settleIn {
  from { opacity: .6; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
.openingCopy { animation: settleIn .8s var(--ease-out-3) both; }
.heroFigure { animation: settleIn 1s var(--ease-out-3) both; }

html[data-motion="off"] [data-reveal],
html[data-motion="off"] .openingCopy,
html[data-motion="off"] .heroFigure { opacity: 1; transform: none; animation: none; transition: none; }
html[data-motion="off"] .wave i,
html[data-motion="off"] .faqBody { animation: none; }
html[data-motion="off"] { scroll-behavior: auto; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal], .openingCopy, .heroFigure { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .wave i, .faqBody { animation: none !important; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0s !important; }
}

/* ---------- responsive ---------- */

@media (max-width: 1200px) {
  .wordmark small { display: none; }
  .footerGrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .serviceGrid { gap: 0 30px; }
}

@media (max-width: 1060px) {
  .nav { display: none; }
  .index-open { display: inline-flex; }
  .openingTitle { font-size: clamp(44px, 5.6vw, 64px); }
  .openingMain { gap: 28px; }
  .heroActions { gap: 12px 22px; }
  .heroCta { font-size: 16px; padding-inline: 18px; }
  .principleGrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .studioInstrument { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 36px; }
  .studioSignature { flex-direction: column; align-items: start; }
}

@media (max-width: 860px) {
  .opening { min-height: auto; }
  .openingMain { grid-template-columns: minmax(0, 1fr); gap: 40px; margin-top: 40px; }
  .openingCopy { max-width: 660px; padding: 0; }
  .openingTitle { font-size: clamp(44px, 7.5vw, 64px); }
  .heroLede { max-width: 53ch; }
  .heroFigure { width: 100%; max-width: 660px; margin-inline: auto; }
  .continuum { height: clamp(300px, 52vw, 390px); }
  .openingNote > span:last-child { display: none; }
  .stageInner { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .stageTitle { max-width: 23ch; }
  .stageLead { max-width: 65ch; }
  .instrument { margin-top: 18px; }
  .readingRoom { grid-template-columns: minmax(0, 1fr); gap: 42px; }
  .understands { max-width: 29ch; }
  .chapterMain { max-width: 72ch; }
  .serviceGrid { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); }
  .servicePrimary { padding: 26px; }
  .serviceRow { grid-template-columns: 22px minmax(0, 1fr); gap: 12px 14px; }
  .serviceRow h3 { font-size: 23px; }
  .serviceRow .cellOut { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .cell { padding: 26px; }
  .caseGrid .cell { grid-template-columns: 22px minmax(0, 1fr); gap: 12px; padding: 26px; }
  .prologueFrame { gap: 28px; }
  .prologueNote { font-size: 18px; }
  .footerInner { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .footerGrid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .menuColumns { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .menuPreview { position: static; }
  .menuPreview p { max-width: 40ch; }
}

@media (max-width: 600px) {
  :root { --margin: 22px; --header-h: 80px; --text-title: clamp(30px, 8vw, 40px); }
  .brandLogo { width: 140px; }
  .wordmark { gap: 16px; }
  .opening { padding-top: 110px; }
  .openingNote { font-size: 10px; }
  .openingMain { margin-top: 32px; gap: 34px; margin-bottom: 28px; }
  .heroCategory { font-size: 14px; margin-bottom: 18px; }
  .openingTitle { font-size: clamp(38px, 10.7vw, 58px); line-height: 1.12; }
  .heroLede { margin-top: 24px; font-size: 19px; }
  .heroActions { gap: 12px 24px; margin-top: 28px; }
  .heroCta { padding: 14px 18px; }
  .heroExplore { font-size: 16px; }
  .heroResponse { font-size: 13px; margin-top: 14px; }
  .figureHead { font-size: 10px; }
  .continuum { height: 290px; }
  .coordinateBottom { font-size: 9px; }
  .poseButtons { gap: 10px; }
  .pose { font-size: 15px; gap: 6px; }
  .poseThought { font-size: 14px; }
  .openingBottom { align-items: start; }
  .openingBottom p { max-width: 18ch; font-size: 13px; }
  .begin { font-size: 13px; gap: 10px; max-width: 175px; }
  .beginArrow { flex: none; }
  .prologue { padding-block: 68px; }
  .prologueFrame { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .prologueSide { font-size: 19px; max-width: 28ch; }
  .prologueCopy { font-size: clamp(26px, 7vw, 40px); }
  .prologueNote { grid-column: 1; margin-right: 24px; }
  .prologueLink { left: auto; right: -5px; bottom: 0; font-size: 30px; }
  .stage { padding-block: 64px 46px; }
  .chapterMeta { margin-bottom: 26px; gap: 12px; }
  .chapterMeta .label { font-size: 10px; }
  .metaName { margin-left: 14px; }
  .stageTitle { max-width: 100%; }
  .stageLead { font-size: 18px; }
  .instrumentHead { font-size: 10px; }
  .rows > li { grid-template-columns: 28px minmax(0, 1fr); gap: 14px; padding-block: 22px; }
  .rows-steps strong { font-size: 23px; }
  .rows-steps em { font-size: 17px; }
  .serviceGrid { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 22px; }
  .servicePrimary { grid-row: auto; padding: 28px; margin-bottom: 16px; }
  .serviceGrid .servicePrimary h3 { font-size: 30px; }
  .auditDiagram { width: 220px; margin: 4px auto; }
  .serviceRow { padding-block: 28px; grid-template-columns: 26px minmax(0, 1fr); gap: 14px; }
  .serviceRow .cellOut { grid-template-columns: 48px minmax(0, 1fr); gap: 10px; }
  .caseGrid, .principleGrid { grid-template-columns: minmax(0, 1fr); }
  .caseGrid { gap: 0; background: transparent; }
  .caseGrid .cell { padding: 26px 0; background: transparent; border-bottom: 1px solid var(--hair); }
  .caseGrid .cell:last-child { border-bottom: 0; }
  .principleGrid .cell { padding: 26px 22px; }
  .cell h3 { font-size: 23px; }
  .cell p { font-size: 17px; }
  .studioInstrument { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .studioSignature { flex-direction: row; align-items: center; }
  .studioSignature img { width: 72px; }
  .studioSignature p { font-size: 16px; }
  .fact { padding: 24px 18px; }
  .readingRoom { padding-block: 52px; gap: 36px; }
  .understands { font-size: 26px; margin-bottom: 20px; }
  .chapterIndex { margin-bottom: 22px; }
  .archive { margin-top: 38px; }
  .archive > p { font-size: 11px; gap: 12px; }
  .archive > p > span:last-child { font-size: 10px; }
  .eventRow { grid-template-columns: 36px minmax(0, 1fr); }
  .flowExample h3 { font-size: 22px; }
  .contactInfo { margin-top: 32px; }
  .footerGrid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 24px; }
  .site-footer { padding-top: 54px; padding-bottom: calc(42px + var(--chrome-h)); }
  .footerCta { font-size: 19px; }
  .indexDialog { width: 100%; max-width: 100%; height: 100svh; max-height: 100svh; padding: 22px; }
  .menuTop { padding-bottom: 24px; }
  .rail a { font-size: clamp(24px, 7vw, 36px); grid-template-columns: 22px minmax(0, 1fr) 20px; gap: 12px; padding-block: 20px; line-height: 1.2; }
  .rail a > span:last-child { font-size: 21px; }
  .menuPreview p { font-size: 19px; }
  .menuPreview { gap: 12px; }
  .chromeFoot { gap: 12px; }
  .indexToggle { gap: 8px; font-size: 11px; }
  .indexToggle > span:nth-child(2) { display: none; }
  .toggles { gap: 12px; }
  .toggle > span:last-child { display: none; }
}

/* A short desktop viewport keeps the call to action above the chrome. */
@media (min-width: 861px) and (max-height: 760px) {
  .opening { padding-top: calc(var(--header-h) + 14px); }
  .openingMain { margin-block: 24px 16px; }
  .openingTitle { font-size: clamp(44px, 5.2vw, 74px); }
  .heroCategory { margin-bottom: 16px; }
  .heroLede { margin-top: 22px; font-size: 19px; }
  .heroActions { margin-top: 24px; }
  .continuum { height: 300px; }
}

@media (pointer: coarse) {
  .coordinateBottom { display: none; }
}

/* Native anchors and the Italian content remain usable without JavaScript. */
html:not([data-enhanced]) .site-header { position: relative; height: auto; min-height: var(--header-h); flex-wrap: wrap; padding-block: 22px; }
html:not([data-enhanced]) .nav { display: block; }
html:not([data-enhanced]) .nav ul { flex-wrap: wrap; gap: 8px 24px; }
html:not([data-enhanced]) .index-open,
html:not([data-enhanced]) .chromeFoot { display: none; }
html:not([data-enhanced]) .opening { min-height: auto; padding-top: 24px; padding-bottom: 0; }
html:not([data-enhanced]) .coordinateBottom { display: none; }