/* ============================================================
   CUSTOM PROPERTIES / TOKENS
   ============================================================ */
:root {
  --black: #0B0D0F;
  --graphite: #1D2226;
  --graphite-2: #252B30;
  --white: #F7F8F8;
  --surface: #EEF1F2;
  --blue: #005AA2;
  --green: #7FD1AE;
  --orange: #E36F3F;
  --gray: #A0A4A6;
  --muted: #B8C0C5;
  --ink: #0B0D0F;
  --line: rgba(247, 248, 248, 0.16);
  --mono: "IBM Plex Mono", monospace;
  --sans: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --hero-gutter: clamp(20px, 4.5vw, 76px);
  --hero-measure: 1240px;
  --control-height: 48px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ============================================================
   RESET AND BASE ELEMENTS
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

button {
  font: inherit;
}

button,
a,
input {
  outline-offset: 4px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 5px;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1,
h2,
h3,
p {
  margin: 0;
  font-family: var(--sans);
  font-style: normal;
  font-stretch: 100%;
  font-variation-settings: normal;
  font-feature-settings: normal;
  text-transform: none;
}

h1 {
  font-size: clamp(58px, 9.5vw, 144px);
  line-height: 0.9;
  letter-spacing: -0.075em;
  font-weight: 600;
}

h2 {
  font-size: clamp(38px, 5.4vw, 78px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 500;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

p {
  font-size: 1rem;
  line-height: 1.7;
}

:where(h1, h2, h3, p):not(.mono, .eyebrow) :where(span, strong, b, em) {
  font-family: inherit;
  font-stretch: inherit;
  font-variation-settings: inherit;
  font-feature-settings: inherit;
  letter-spacing: inherit;
  line-height: inherit;
  text-transform: inherit;
}

:where(h1, h2, h3, p):not(.mono, .eyebrow) span {
  font-size: inherit;
  font-weight: inherit;
  font-style: inherit;
}

.mono {
  font: 12px/1.45 var(--mono);
  letter-spacing: 0.02em;
}

.eyebrow {
  font: 12px/1.4 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow-accent {
  color: var(--green);
}

/* ============================================================
   SHARED LAYOUT CONTAINERS
   ============================================================ */
.wrap {
  width: min(1240px, calc(100% - 64px));
  margin: auto;
}

/* ============================================================
   HEADER AND NAVIGATION
   ============================================================ */
header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 5;
  width: 100%;
  padding: 24px 0;
  border-bottom: 1px solid rgba(247, 248, 248, 0.12);
  color: var(--white);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header .wrap,
.hero-inner.wrap {
  width: min(var(--hero-measure), calc(100% - (var(--hero-gutter) * 2)));
}

.site-logo {
  width: clamp(112px, 9vw, 132px);
  filter: none;
}

.navlinks {
  display: flex;
  gap: 30px;
  align-items: center;
}

.navlinks a {
  font-size: 13px;
  color: #D8DEE1;
}

.navlinks a:hover {
  color: var(--green);
}

.nav-cta {
  border: 1px solid rgba(247, 248, 248, 0.5);
  border-radius: var(--radius-md);
  padding: 10px 15px;
  font-size: 12px;
}

.nav-cta:hover {
  border-color: var(--green);
  color: var(--green);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: flex-end;
  justify-content: initial;
  min-height: 100svh;
  width: 100%;
  padding: 0;
  gap: 0;
  background: var(--black);
  color: var(--white);
  text-align: left;
}

.hero video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.44;
  filter: contrast(1.03) saturate(0.7);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(11, 13, 15, 0.86) 0%,
    rgba(11, 13, 15, 0.8) 28%,
    rgba(11, 13, 15, 0.66) 56%,
    rgba(11, 13, 15, 0.4) 78%,
    rgba(11, 13, 15, 0.24) 100%
  );
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: clamp(146px, 17vh, 176px) 0 clamp(110px, 14vh, 138px);
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: var(--green);
  white-space: nowrap;
}

.marker {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
}

.hero h1 {
  max-width: 10.75ch;
  margin: 0 0 26px;
  font-size: clamp(54px, 8vw, 132px);
  line-height: 0.92;
  letter-spacing: -0.058em;
  text-wrap: balance;
}

.hero h1 span {
  display: block;
  color: var(--green);
}

.hero-foot {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  max-width: 100%;
  margin-bottom: 0;
  gap: clamp(18px, 3vw, 34px);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  width: auto;
  max-width: 36ch;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
  gap: 0.12em;
}

.hero-copy strong {
  display: block;
  margin-bottom: 0.18em;
  color: var(--muted);
  font-weight: 500;
}

.hero-copy span {
  display: block;
}

.scroll-note {
  margin-top: 16px;
  color: var(--gray);
  opacity: 0.82;
  white-space: nowrap;
}

/* ============================================================
   FORM
   ============================================================ */
.hero .signup {
  width: min(100%, 640px);
  margin-top: clamp(28px, 3.2vw, 36px);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  background: rgba(34, 38, 42, 0.46);
  backdrop-filter: blur(4px);
}

.hero .signup-form {
  display: block;
  max-width: 570px;
  margin-top: 0;
}

.hero .signup-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hero .signup-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
  gap: 10px;
}

.hero .signup-field label {
  color: var(--gray);
}

.hero .signup-controls input,
.hero .signup-controls button {
  box-sizing: border-box;
  height: var(--control-height);
  min-height: var(--control-height);
  margin: 0;
}

.hero .signup-controls input {
  width: 100%;
  border: 1px solid rgba(247, 248, 248, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(24, 27, 30, 0.68);
  color: var(--white);
  padding: 0 14px;
  font: 14px var(--sans);
  line-height: normal;
  appearance: none;
}

.hero .signup-controls input::placeholder {
  color: var(--gray);
}

.hero .signup-controls button {
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  background: rgba(115, 120, 126, 0.52);
  color: rgba(255, 255, 255, 0.92);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  line-height: normal;
  white-space: nowrap;
}

.hero .signup-controls button:hover {
  background: rgba(135, 140, 146, 0.62);
}

.hero .signup-controls button:active {
  background: rgba(95, 100, 106, 0.56);
}

.hero .signup-controls button:disabled {
  background: rgba(95, 100, 106, 0.34);
  border-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.62);
  cursor: not-allowed;
}

.hero .audit-note {
  margin: 10px 0 0;
  color: var(--gray);
}

.hero .thank-you {
  display: none;
  margin: 10px 0 0;
  color: var(--green);
}

/* ============================================================
   CONTENT SECTIONS
   ============================================================ */
.light {
  background: var(--white);
  padding: 150px 0;
}

.dark {
  background: var(--black);
  color: var(--white);
}

.problem {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11vw;
  align-items: start;
}

.problem h2,
.canonical h2 {
  margin: 18px 0 0;
}

.problem h2 {
  max-width: 18ch;
}

.problem-heading-line {
  display: block;
}

.problem-heading-pair {
  display: inline-block;
}

.problem-copy {
  max-width: 470px;
  padding-top: 20px;
}

.problem-copy p {
  margin: 0;
  color: #4E565C;
  font-size: 19px;
  line-height: 1.55;
}

.rule {
  margin-top: 50px;
  padding-top: 18px;
  border-top: 1px solid #C9CFD2;
  color: #4E565C;
}

.rule strong {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 500;
}

.canonical {
  position: relative;
  overflow: hidden;
  padding: 150px 0 120px;
}

.canonical-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11vw;
  margin-bottom: 90px;
}

.canonical h2 {
  max-width: 18ch;
}

.canonical-heading-line {
  display: block;
}

.canonical-heading-detail {
  max-width: 100%;
}

.canonical-heading-pair {
  display: inline-block;
}

.canonical-intro p {
  max-width: 470px;
  margin: 44px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.loop {
  padding: 8px 0 44px;
  background: var(--black);
}

.stage {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
  min-height: 0;
  padding: clamp(56px, 7vw, 104px) 0;
  border-top: 1px solid var(--line);
}

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

.stage-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 33rem;
}

.stage-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  margin-bottom: 20px;
}

.stage-label {
  color: var(--white);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stage-status {
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stage-status-dev {
  color: var(--gray);
}

.stage h2 {
  margin: 0 0 24px;
  font-size: clamp(44px, 7vw, 96px);
  letter-spacing: -0.07em;
  line-height: 0.9;
  font-weight: 500;
}

.stage p {
  max-width: 37ch;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.stage-media {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
  align-self: start;
}

.identity {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 25px;
  padding: 9px 12px;
  border: 1px solid rgba(127, 209, 174, 0.48);
  border-radius: 999px;
  background: rgba(29, 34, 38, 0.78);
  color: var(--green);
}

.interlude {
  padding: 145px 0;
  background: var(--surface);
  color: var(--ink);
}

.interlude-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 12vw;
  align-items: center;
}

.interlude h2 {
  margin: 18px 0;
  font-size: clamp(42px, 6vw, 88px);
  line-height: 0.95;
  letter-spacing: -0.07em;
  font-weight: 500;
  max-width: 11ch;
}

.state-heading-line {
  display: block;
}

.state-heading-pair {
  display: inline-block;
}

.interlude p {
  max-width: 440px;
  color: #4E565C;
  font-size: 18px;
  line-height: 1.6;
}

.evidence {
  padding: 150px 0;
  background: var(--black);
  color: var(--white);
}

.evidence-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
  margin-bottom: 60px;
}

.evidence h2,
.category h2 {
  margin: 18px 0 0;
  font-size: clamp(40px, 5.5vw, 76px);
  letter-spacing: -0.065em;
  line-height: 0.95;
  font-weight: 500;
}

.category h2 {
  max-width: 14ch;
}

.category-heading-line {
  display: block;
}

.category-heading-pair {
  display: inline-block;
}

.evidence-head p {
  max-width: 360px;
  color: var(--muted);
  line-height: 1.55;
}

.category {
  padding: 150px 0;
  background: var(--white);
}

.category-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11vw;
  margin-bottom: 74px;
}

.category-intro p {
  max-width: 440px;
  margin-top: 48px;
  color: #4E565C;
  font-size: 18px;
  line-height: 1.6;
}

.boundaries {
  border-top: 1px solid #C9CFD2;
}

.boundary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11vw;
  padding: 27px 0;
  border-bottom: 1px solid #C9CFD2;
}

.boundary h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 500;
}

.boundary p {
  max-width: 500px;
  margin: 0;
  color: #4E565C;
  line-height: 1.55;
}

.boundary p strong {
  color: var(--ink);
  font-weight: 500;
}

.three-ways {
  padding: 140px 0 150px;
  background: var(--black);
  color: var(--white);
}

.three-ways-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11vw;
  margin-bottom: 50px;
}

.three-ways-intro p {
  max-width: 460px;
  margin-top: 48px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.three-ways h2 {
  color: var(--white);
}

.three-ways-list {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--graphite);
  overflow: hidden;
}

.three-ways-row {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(0, 1fr);
  gap: 36px;
  padding: 31px 34px;
  align-items: start;
}

.three-ways-row + .three-ways-row {
  border-top: 1px solid var(--line);
}

.three-ways-label {
  margin: 0;
  color: var(--green);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.three-ways-copy {
  max-width: 700px;
}

.three-ways-primary,
.three-ways-secondary {
  margin: 0;
}

.three-ways-primary {
  color: var(--white);
  font-size: 22px;
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.three-ways-secondary {
  margin-top: 12px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.three-ways-closing {
  max-width: 580px;
  margin: 36px auto 0;
  color: var(--white);
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: -0.03em;
  text-align: center;
}

/* ============================================================
   DIAGRAMS AND EVIDENCE
   ============================================================ */
.asset-model {
  position: relative;
  --model-number-col: 118px;
  --model-rail-gap: 18px;
  --model-node-size: 13px;
  --model-row-gap: 18px;
  min-height: 410px;
  padding: 42px 42px 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--graphite);
}

.model-line {
  position: absolute;
  left: calc(42px + var(--model-number-col) + var(--model-rail-gap) - 0.5px);
  top: 84px;
  bottom: 84px;
  width: 1px;
  background: var(--green);
}

.model-row {
  position: relative;
  display: grid;
  grid-template-columns: var(--model-number-col) minmax(0, 620px);
  gap: var(--model-row-gap);
  align-items: start;
  margin: 0 0 34px;
  justify-content: start;
}

.model-row:last-child {
  margin-bottom: 0;
}

.model-row > div {
  position: relative;
  max-width: 620px;
  padding-left: 22px;
}

.model-dot {
  position: absolute;
  top: 5px;
  left: calc((var(--model-row-gap) * -1) - (var(--model-node-size) / 2));
  width: var(--model-node-size);
  height: var(--model-node-size);
  border: 2px solid var(--green);
  border-radius: 50%;
  background: var(--graphite);
}

.model-row h3 {
  margin: 0;
  color: var(--white);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.35;
}

.model-row p {
  max-width: 600px;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.62;
}

.model-row:first-of-type p {
  color: var(--green);
}

.placeholder {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 340px;
  height: min(60vw, 570px);
  border: 1px solid rgba(247, 248, 248, 0.25);
  border-radius: var(--radius-lg);
  background: var(--graphite);
}

.placeholder::before,
.placeholder::after {
  content: "";
  position: absolute;
  background: rgba(247, 248, 248, 0.11);
}

.placeholder::before {
  top: 50%;
  left: 8%;
  right: 8%;
  height: 1px;
}

.placeholder::after {
  top: 8%;
  bottom: 8%;
  left: 50%;
  width: 1px;
}

.placeholder-label {
  position: relative;
  z-index: 1;
  max-width: 310px;
  padding: 16px;
  border: 1px solid rgba(247, 248, 248, 0.3);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 15, 0.88);
  color: var(--muted);
  text-align: center;
}

.placeholder-label strong {
  display: block;
  margin-bottom: 5px;
  color: var(--white);
  font-weight: 400;
}

.product-evidence {
  margin: 0;
}

.product-evidence-caption {
  color: var(--gray);
  margin-bottom: 10px;
}

.product-evidence-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(247, 248, 248, 0.2);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 15, 0.32);
}

.product-evidence-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 100%;
}

.product-evidence-primary + .product-evidence-grid {
  margin-top: 16px;
}

.product-evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.caption {
  margin-top: 2px;
  color: var(--gray);
}

.status {
  display: inline-block;
  margin-left: 12px;
  color: var(--green);
}

.status.dev {
  color: var(--orange);
}

.stage-media .product-evidence-caption {
  margin-top: 8px;
  margin-bottom: 0;
}

.stage-media .product-evidence-frame {
  background: rgba(11, 13, 15, 0.4);
}

.stage-media .product-evidence-primary .product-evidence-frame {
  min-height: clamp(300px, 38vw, 520px);
}

.stage-media .product-evidence-primary + .product-evidence-grid {
  margin-top: 0;
}

.stage-media .product-evidence-grid {
  gap: 12px;
}

.compose-evidence-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
}

.compose-evidence-copy {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.compose-evidence-title {
  color: var(--white);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.08em;
}

.compose-evidence-description {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.stage-media .placeholder {
  min-height: clamp(280px, 34vw, 440px);
  height: auto;
}

.normalize-gallery {
  --normalize-title-min-height: calc(1 * 1lh);
  --normalize-description-min-height: calc(4 * 1lh);
  --normalize-copy-min-height: calc(var(--normalize-title-min-height) + 8px + var(--normalize-description-min-height));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.normalize-gallery-display {
  position: relative;
  aspect-ratio: 1922 / 1112;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.normalize-gallery-view[hidden] {
  display: none;
}

.normalize-gallery-view {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 0;
}

.normalize-gallery-view.is-active {
  display: flex;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.normalize-gallery-display .product-evidence,
.normalize-gallery-display .product-evidence-frame,
.normalize-gallery-view .normalize-structure-panel {
  width: 100%;
  height: 100%;
}

.normalize-gallery-display .product-evidence {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  overflow: hidden;
}

.normalize-gallery-display .product-evidence-frame {
  min-height: 0;
  overflow: hidden;
  border-radius: inherit;
}

.normalize-gallery-display .product-evidence-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  border-radius: inherit;
}

.normalize-gallery-view .normalize-structure-panel {
  border-radius: inherit;
  overflow: hidden;
}

.normalize-gallery-copy {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: var(--normalize-copy-min-height);
}

.normalize-gallery-title {
  min-height: var(--normalize-title-min-height);
  color: var(--white);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.normalize-gallery-description {
  min-height: var(--normalize-description-min-height);
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.normalize-gallery-selectors {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.normalize-gallery-trigger {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 12px;
  border: 1px solid rgba(247, 248, 248, 0.14);
  border-radius: var(--radius-md);
  background: rgba(29, 34, 38, 0.62);
  color: var(--white);
  text-align: left;
  cursor: pointer;
}

.normalize-gallery-trigger:hover {
  border-color: rgba(247, 248, 248, 0.28);
  background: rgba(39, 44, 49, 0.78);
}

.normalize-gallery-trigger.is-active {
  border-color: rgba(127, 209, 174, 0.58);
  background: rgba(24, 31, 33, 0.92);
}

.normalize-gallery-trigger-preview {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 76px;
  overflow: hidden;
  border: 1px solid rgba(247, 248, 248, 0.14);
  border-radius: var(--radius-sm);
  background: rgba(11, 13, 15, 0.62);
}

.normalize-gallery-trigger-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.normalize-gallery-trigger-panel {
  gap: 6px;
  padding: 10px 11px;
}

.normalize-gallery-trigger-row {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.25;
  white-space: nowrap;
}

.normalize-gallery-trigger-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.normalize-gallery-trigger-title {
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

.normalize-gallery-trigger-meta {
  color: var(--gray);
}

.normalize-gallery-trigger[data-normalize-target="asset"] .normalize-gallery-trigger-image img,
.normalize-gallery-view[data-normalize-view="asset"] .product-evidence-image {
  object-fit: contain;
  object-position: center;
}

.normalize-structure-panel {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: clamp(16px, 2vw, 22px);
  padding: clamp(18px, 2.2vw, 24px);
  border: 1px solid rgba(247, 248, 248, 0.18);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(37, 43, 48, 0.94) 0%, rgba(24, 29, 33, 0.96) 100%);
}

.normalize-structure-header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.normalize-structure-badge {
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.normalize-structure-name {
  color: rgba(247, 248, 248, 0.9);
  font-size: 14px;
}

.normalize-structure-list {
  display: grid;
  flex: 1 1 auto;
  min-height: 0;
  gap: 10px;
}

.normalize-structure-row {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  min-height: 0;
  padding: 12px 14px;
  border: 1px solid rgba(247, 248, 248, 0.08);
  border-radius: var(--radius-sm);
  background: rgba(11, 13, 15, 0.26);
}

.normalize-structure-panel-root .normalize-structure-list {
  grid-template-rows: repeat(4, minmax(0, 1fr));
}

.normalize-structure-panel-content .normalize-structure-list {
  grid-template-rows: repeat(6, minmax(0, 1fr));
}

.normalize-node {
  display: inline-flex;
  align-items: center;
  color: var(--white);
  font-size: 14px;
}

.normalize-node-folder::before,
.normalize-node-file::before {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  margin-right: 8px;
  color: var(--green);
}

.normalize-node-folder::before {
  content: "▣";
}

.normalize-node-file::before {
  content: "—";
}

.normalize-node-detail {
  color: var(--gray);
  font-size: 14px;
  line-height: 1.45;
}

.sync-media {
  gap: 12px;
}

.sync-gallery {
  --sync-title-min-height: calc(1 * 1lh);
  --sync-description-min-height: calc(3 * 1lh);
  --sync-copy-min-height: calc(var(--sync-title-min-height) + 8px + var(--sync-description-min-height));
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sync-gallery-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  margin-top: 24px;
}

.sync-gallery-label {
  color: var(--gray);
}

.sync-gallery-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sync-gallery-button {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 14px;
  border: 1px solid rgba(247, 248, 248, 0.14);
  border-radius: var(--radius-md);
  background: rgba(29, 34, 38, 0.62);
  color: var(--white);
  text-align: left;
  cursor: pointer;
}

.sync-gallery-button::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 0;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: transparent;
}

.sync-gallery-button:hover {
  border-color: rgba(247, 248, 248, 0.28);
  background: rgba(39, 44, 49, 0.78);
}

.sync-gallery-button.is-active {
  border-color: rgba(127, 209, 174, 0.36);
  background: rgba(24, 31, 33, 0.9);
}

.sync-gallery-button.is-active::before {
  background: var(--green);
}

.sync-gallery-button-step {
  color: var(--gray);
}

.sync-gallery-button-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.sync-gallery-button-label {
  color: var(--white);
  font-size: 14px;
  line-height: 1.35;
}

.sync-gallery-display {
  min-width: 0;
}

.sync-gallery-figure {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sync-gallery-frame {
  width: 100%;
  aspect-ratio: 1922 / 1112;
  overflow: hidden;
}

.sync-gallery-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.sync-gallery-copy {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: var(--sync-copy-min-height);
}

.sync-gallery-title {
  min-height: var(--sync-title-min-height);
  color: var(--white);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sync-gallery-description {
  min-height: var(--sync-description-min-height);
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.sync-gallery-expansion {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 6px;
}

.sync-gallery-expansion-description {
  max-width: 58ch;
  color: var(--gray);
  font-size: 15px;
  line-height: 1.55;
}

.sync-gallery-expansion-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sync-gallery-expansion-item {
  display: inline-flex;
  align-items: center;
  padding: 9px 12px;
  border: 1px solid rgba(247, 248, 248, 0.12);
  border-radius: var(--radius-md);
  background: rgba(29, 34, 38, 0.42);
  color: var(--muted);
  font: 12px/1.4 var(--mono);
}

.timeline {
  position: relative;
  padding: 30px 0 26px;
  border-top: 1px solid #A0A4A6;
  border-bottom: 1px solid #A0A4A6;
}

.timeline-main {
  position: absolute;
  top: 77px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--green);
}

.timeline-origin {
  position: absolute;
  top: 60px;
  left: 0;
  right: 10%;
  height: 1px;
  border-top: 1px dashed #A0A4A6;
}

.timeline-node {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
}

.node {
  width: 16px;
  height: 16px;
  border: 4px solid var(--surface);
  border-radius: 50%;
  background: var(--blue);
}

.node:first-child {
  background: var(--green);
}

.timeline-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 42px;
  color: #4E565C;
}

.timeline-labels span {
  max-width: 78px;
  font: 11px var(--mono);
}

.branches {
  display: flex;
  justify-content: flex-end;
  gap: 28px;
  padding-top: 34px;
  color: #747C82;
}

.branch {
  max-width: 130px;
  padding-left: 10px;
  border-left: 1px solid #A0A4A6;
  font: 11px/1.4 var(--mono);
}

.evidence-frame {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.evidence-frame .product-evidence-frame {
  border-radius: var(--radius-lg);
  min-height: 520px;
}

/* ============================================================
   CTA / FOOTER
   ============================================================ */
.closing {
  padding: 175px 0 110px;
  background: var(--black);
  color: var(--white);
}

.closing-inner {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 60px;
}

.closing h2 {
  max-width: 13ch;
  margin: 18px 0 0;
  font-size: clamp(52px, 8vw, 120px);
  line-height: 0.88;
  letter-spacing: -0.08em;
  font-weight: 500;
  text-wrap: balance;
}

.closing-heading-line {
  display: block;
}

.closing-heading-pair {
  display: inline-block;
}

.closing p {
  max-width: 340px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

.action {
  display: inline-flex;
  margin-top: 28px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--blue);
  color: var(--white);
  font-size: 13px;
}

.action:hover {
  background: #0871C1;
}

.document-page {
  background: var(--black);
  color: var(--white);
}

.document-header {
  position: relative;
  padding: 24px 0;
  border-bottom: 1px solid rgba(247, 248, 248, 0.12);
  background: var(--black);
  color: var(--white);
}

.document-header .wrap {
  width: min(var(--hero-measure), calc(100% - (var(--hero-gutter) * 2)));
}

.document-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.document-brand {
  display: inline-flex;
  align-items: center;
}

.document-home-link {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.document-home-link:hover {
  color: var(--green);
}

.document-main {
  background: var(--black);
}

.document-hero {
  padding: clamp(146px, 18vh, 182px) 0 clamp(96px, 12vh, 128px);
  background: var(--black);
}

.document-hero-inner.wrap,
.document-content-inner.wrap,
.principles-orientation-shell.wrap,
.principles-why-shell.wrap,
.document-closing-inner.wrap {
  width: min(var(--hero-measure), calc(100% - (var(--hero-gutter) * 2)));
  max-width: none;
}

.document-hero h1 {
  max-width: 12ch;
  margin-top: 20px;
  font-size: clamp(56px, 8vw, 118px);
  line-height: 0.91;
  letter-spacing: -0.068em;
  font-weight: 600;
  text-wrap: balance;
}

.document-intro {
  max-width: 40ch;
  margin-top: 30px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.68;
}

.document-content {
  background: var(--black);
}

.document-content-primary {
  padding: clamp(56px, 8vh, 88px) 0 clamp(92px, 12vh, 118px);
}

.document-content-secondary {
  padding: clamp(72px, 9vh, 98px) 0 104px;
}

.document-content-inner {
  display: grid;
  gap: clamp(72px, 9vh, 112px);
}

.document-content-secondary .document-content-inner {
  gap: 0;
}

.principles-section {
  color: var(--white);
}

.principles-eyebrow {
  margin: 0;
}

.principles-chapter {
  display: grid;
  gap: 16px;
  width: 100%;
  max-width: none;
}

.principles-declaration {
  max-width: 16ch;
  color: var(--white);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 0.98;
  letter-spacing: -0.058em;
  font-weight: 500;
  text-wrap: balance;
}

.principles-section p.principles-lead {
  max-width: 32ch;
  margin: 0;
  color: var(--white);
  font-size: clamp(23px, 2.9vw, 34px);
  line-height: 1.18;
  letter-spacing: -0.035em;
  font-weight: 500;
  text-wrap: balance;
}

.principles-copy-stack {
  display: grid;
  gap: 18px;
  max-width: 42ch;
  margin-top: 24px;
}

.principles-orientation {
  padding: clamp(52px, 8vh, 84px) 0 clamp(60px, 9vh, 92px);
  background: var(--surface);
  color: var(--ink);
}

.principles-orientation-shell {
  display: grid;
  gap: 18px;
}

.principles-section.principles-orientation .principles-eyebrow {
  color: var(--ink);
  font-size: 13px;
}

.principles-section.principles-orientation .principles-orientation-answer {
  max-width: 18ch;
  margin: 0;
  color: var(--ink);
  font-size: clamp(42px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.05em;
  font-weight: 500;
  text-wrap: balance;
}

.principles-section-surface,
.principles-section-emphasis {
  padding: 36px 38px;
  border-radius: var(--radius-lg);
}

.principles-section-surface {
  border: 1px solid rgba(247, 248, 248, 0.1);
  background: rgba(29, 34, 38, 0.88);
}

.principles-section-emphasis {
  border: 1px solid rgba(247, 248, 248, 0.1);
  background: rgba(37, 43, 48, 0.92);
}

.principles-section p {
  max-width: 42ch;
  margin-top: 20px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.68;
}

.principles-section .principles-copy-stack p {
  margin-top: 0;
}

.principles-systems-evidence {
  margin-top: 44px;
}

.principles-section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 380px);
  gap: 34px;
  align-items: start;
}

.principles-section-intro p {
  margin-top: 8px;
}

.principles-contrast {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 0;
}

.principles-contrast-group {
  padding: 24px 26px;
  border: 1px solid rgba(247, 248, 248, 0.1);
  border-radius: var(--radius-md);
  background: rgba(29, 34, 38, 0.82);
}

.principles-contrast-group h3 {
  margin: 0;
  color: var(--green);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.principles-bullet-list,
.principles-dimension-list,
.principles-change-list,
.principles-ordered-list,
.principles-anatomy-dimensions,
.principles-output-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.principles-bullet-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  color: var(--white);
  font-size: 19px;
  line-height: 1.42;
}

.principles-contrast-notes {
  display: grid;
  gap: 9px;
  margin-top: 20px;
  color: #98A2A9;
}

.principles-contrast-notes p {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 0;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.principles-orchestration-intro {
  max-width: 900px;
}

.principles-orchestration-declaration {
  max-width: 18ch;
}

.principles-orchestration-map {
  display: grid;
  grid-template-areas: "tools connector-tools dimensions connector-canonical canonical connector-representations representations";
  grid-template-columns: minmax(136px, 0.72fr) 38px minmax(194px, 1.1fr) 38px minmax(194px, 0.92fr) 38px minmax(190px, 1fr);
  gap: 12px;
  align-items: center;
  margin-top: 38px;
  position: relative;
}

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

.principles-orchestration-label {
  display: block;
  margin-bottom: 10px;
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.principles-orchestration-tools {
  grid-area: tools;
}

.principles-orchestration-tool-list,
.principles-orchestration-dimension-list,
.principles-orchestration-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.principles-orchestration-tool-list,
.principles-orchestration-dimension-list,
.principles-orchestration-list {
  display: grid;
  gap: 8px;
}

.principles-orchestration-tool-list li,
.principles-orchestration-dimension-list li,
.principles-orchestration-list li {
  border: 1px solid rgba(247, 248, 248, 0.08);
  border-radius: var(--radius-sm);
  background: rgba(247, 248, 248, 0.03);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.principles-orchestration-tool-list li {
  padding: 15px 14px;
}

.principles-orchestration-dimensions {
  grid-area: dimensions;
}

.principles-orchestration-dimension-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.principles-orchestration-dimension-list li {
  padding: 10px 11px;
}

.principles-orchestration-canonical {
  grid-area: canonical;
}

.principles-orchestration-boundary {
  padding: 10px;
  border: 1px solid rgba(127, 209, 174, 0.42);
  border-radius: var(--radius-lg);
  background: rgba(127, 209, 174, 0.04);
}

.principles-orchestration-core {
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 12px;
  min-height: 178px;
  padding: 24px 18px;
  border: 1px solid rgba(247, 248, 248, 0.1);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 15, 0.38);
  text-align: center;
}

.principles-orchestration-core-label {
  display: block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.principles-orchestration-core strong {
  max-width: 9ch;
  font-size: 27px;
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.principles-orchestration-connector {
  display: grid;
  grid-auto-rows: 1px;
  gap: 12px;
}

.principles-orchestration-connector span {
  background: rgba(247, 248, 248, 0.2);
}

.principles-orchestration-connector-tools {
  grid-area: connector-tools;
}

.principles-orchestration-connector-canonical {
  grid-area: connector-canonical;
}

.principles-orchestration-connector-representations {
  grid-area: connector-representations;
}

.principles-orchestration-representations {
  grid-area: representations;
}

.principles-orchestration-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.principles-orchestration-list li {
  padding: 11px 12px;
}

.principles-anatomy {
  display: grid;
  grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  margin-top: 34px;
}

.principles-anatomy-copy p {
  margin-top: 0;
}

.principles-dimension-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.principles-dimension-list li,
.principles-change-list li {
  position: relative;
  padding-left: 16px;
}

.principles-dimension-list li::before,
.principles-change-list li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
}

.principles-anatomy-figure {
  display: grid;
  gap: 16px;
  padding: 26px;
  border: 1px solid rgba(247, 248, 248, 0.1);
  border-radius: var(--radius-lg);
  background: rgba(11, 13, 15, 0.18);
}

.principles-anatomy-core,
.principles-anatomy-output {
  padding: 18px 20px;
  border: 1px solid rgba(247, 248, 248, 0.1);
  border-radius: var(--radius-md);
  background: rgba(247, 248, 248, 0.04);
}

.principles-anatomy-core-label,
.principles-anatomy-output-label {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.principles-anatomy-core strong {
  display: block;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 500;
}

.principles-anatomy-dimensions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.principles-anatomy-dimensions li,
.principles-output-list li {
  padding: 10px 12px;
  border: 1px solid rgba(247, 248, 248, 0.08);
  border-radius: var(--radius-sm);
  background: rgba(247, 248, 248, 0.03);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.principles-output-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.principles-change-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.principles-tools .principles-copy-stack {
  max-width: 38ch;
}

.principles-why-light {
  padding: clamp(64px, 9vh, 96px) 0 clamp(72px, 10vh, 104px);
  background: var(--surface);
  color: var(--ink);
}

.principles-why-shell {
  display: grid;
  gap: 32px;
}

.principles-section.principles-why-light .principles-eyebrow,
.principles-section.principles-why-light .principles-declaration,
.principles-section.principles-why-light p,
.principles-section.principles-why-light li {
  color: var(--ink);
}

.principles-section.principles-why-light .principles-declaration {
  max-width: 18ch;
}

.principles-why-evidence {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.principles-why-panel {
  padding: 28px 30px;
  border: 1px solid rgba(11, 13, 15, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(247, 248, 248, 0.58);
}

.principles-why-panel h3 {
  margin: 0;
  color: var(--green);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.principles-why-panel p {
  max-width: 30ch;
  margin-top: 18px;
  color: #3B4146;
}

.principles-section.principles-why-light .principles-change-list {
  color: #3B4146;
}

.principles-section p.principles-why-closing {
  max-width: 38ch;
  margin: 0;
  color: var(--ink);
  font-size: clamp(22px, 2.7vw, 30px);
  line-height: 1.22;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.principles-list-shell {
  margin-top: 36px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
}

.principles-ordered-list {
  counter-reset: principle;
  border-top: 1px solid rgba(247, 248, 248, 0.12);
  border-bottom: 1px solid rgba(247, 248, 248, 0.12);
}

.principles-ordered-list li {
  position: relative;
  padding: 22px 0 22px 54px;
  color: var(--white);
  font-size: 20px;
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.principles-ordered-list li + li {
  border-top: 1px solid rgba(247, 248, 248, 0.1);
}

.principles-ordered-list li::before {
  counter-increment: principle;
  content: counter(principle, decimal-leading-zero);
  position: absolute;
  top: 23px;
  left: 0;
  color: var(--green);
  font: 11px/1.2 var(--mono);
  letter-spacing: 0.08em;
}

.document-closing {
  padding: 74px 0 116px;
  background: #08090B;
}

.document-closing h2 {
  max-width: 13ch;
  margin-top: 16px;
  font-size: clamp(48px, 6.8vw, 86px);
  line-height: 0.92;
  letter-spacing: -0.062em;
  font-weight: 500;
  text-wrap: balance;
}

.document-closing p {
  max-width: 36ch;
  margin-top: 24px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.68;
}

.principles-page .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

html.principles-reveal-ready .principles-page .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

html.principles-reveal-ready .principles-page .reveal.visible {
  opacity: 1;
  transform: none;
}

.principles-page .principles-reveal-stagger-1 {
  transition-delay: 0.08s;
}

.principles-page .principles-reveal-stagger-2 {
  transition-delay: 0.16s;
}

.principles-page .principles-reveal-stagger-3 {
  transition-delay: 0.24s;
}

.principles-page .principles-reveal-stagger-4 {
  transition-delay: 0.32s;
}

.principles-page .principles-reveal-stagger-5 {
  transition-delay: 0.4s;
}

.principles-page .principles-reveal-stagger-6 {
  transition-delay: 0.48s;
}

.principles-page .principles-reveal-stagger-7 {
  transition-delay: 0.56s;
}

.principles-page .principles-reveal-stagger-8 {
  transition-delay: 0.64s;
}

.document-home-action {
  display: inline-flex;
  margin-top: 30px;
  padding: 14px 18px;
  border: 1px solid rgba(247, 248, 248, 0.22);
  border-radius: var(--radius-md);
  color: var(--white);
  font-size: 13px;
}

.document-home-action:hover {
  border-color: var(--green);
  color: var(--green);
}

.document-footer {
  padding: 0 0 34px;
  background: #08090B;
}

.document-footer .footer {
  margin-top: 0;
  border-top: 1px solid rgba(247, 248, 248, 0.12);
  color: #858E94;
}

.footer {
  display: flex;
  justify-content: space-between;
  margin-top: 120px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--gray);
}

.footer img {
  width: 54px;
}

/* ============================================================
   INTERACTION STATES
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE RULES
   ============================================================ */
@media (max-width: 1150px) {
  .stage {
    grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
    gap: 24px;
    padding: clamp(52px, 6.5vw, 84px) 0;
  }

  .stage p {
    max-width: 34ch;
  }

  .stage-media .product-evidence-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .normalize-gallery {
    --normalize-description-min-height: calc(4 * 1lh);
    --normalize-copy-min-height: calc(var(--normalize-title-min-height) + 8px + var(--normalize-description-min-height));
  }

  .normalize-gallery-selectors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .stage {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .stage-copy,
  .stage-media {
    width: 100%;
    max-width: none;
  }

  .stage p {
    max-width: 40ch;
  }

  .sync-gallery {
    --sync-description-min-height: calc(3 * 1lh);
    --sync-copy-min-height: calc(var(--sync-title-min-height) + 8px + var(--sync-description-min-height));
    gap: 16px;
  }

  .normalize-structure-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .principles-orchestration-map {
    grid-template-areas:
      "tools dimensions"
      "canonical representations";
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 24px;
  }

  .principles-orchestration-connector {
    display: none;
  }
}

@media (max-width: 760px) {
  .wrap {
    width: min(100% - 40px, 1240px);
  }

  header .wrap,
  .hero-inner.wrap {
    width: min(var(--hero-measure), calc(100% - (var(--hero-gutter) * 2)));
  }

  header {
    padding: 18px 0;
  }

  .navlinks {
    display: none;
  }

  .hero-inner {
    padding: 118px 0 62px;
  }

  .hero h1 {
    max-width: 9.5ch;
    font-size: clamp(52px, 15vw, 88px);
  }

  .hero-foot {
    display: block;
    max-width: 100%;
  }

  .hero-copy {
    max-width: 31ch;
    font-size: 16px;
    gap: 0.12em;
  }

  .hero-copy strong {
    margin-bottom: 0.16em;
  }

  .hero-kicker {
    white-space: normal;
  }

  .scroll-note {
    margin-top: 14px;
    white-space: normal;
  }

  .hero .signup {
    margin-top: clamp(20px, 6vw, 28px);
  }

  .hero .signup-controls {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero .signup-controls button {
    width: 100%;
  }

  .light,
  .canonical,
  .evidence,
  .category,
  .interlude {
    padding: 90px 0;
  }

  .problem,
  .canonical-intro,
  .interlude-inner,
  .category-intro {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .problem-copy p,
  .interlude p,
  .category-intro p {
    font-size: 16px;
  }

  .problem h2,
  .canonical h2 {
    margin-top: 10px;
  }

  .canonical-intro p,
  .category-intro p {
    margin-top: 0;
  }

  .asset-model {
    --model-number-col: 82px;
    --model-rail-gap: 16px;
    --model-node-size: 12px;
    --model-row-gap: 16px;
    min-height: 0;
    padding: 32px 22px;
  }

  .model-line {
    left: calc(22px + var(--model-number-col) + var(--model-rail-gap) - 0.5px);
    top: 72px;
    bottom: 72px;
  }

  .model-row {
    grid-template-columns: var(--model-number-col) minmax(0, 1fr);
    gap: var(--model-row-gap);
    margin-bottom: 28px;
  }

  .model-row > div {
    padding-left: 18px;
  }

  .model-dot {
    top: 4px;
  }

  .model-row h3 {
    font-size: 15px;
  }

  .model-row p {
    max-width: none;
    margin-top: 5px;
    font-size: 14px;
    line-height: 1.56;
  }

  .stage {
    gap: 24px;
    padding: clamp(48px, 10vw, 72px) 0;
  }

  .stage h2 {
    font-size: 64px;
  }

  .stage p {
    font-size: 16px;
  }

  .stage-media,
  .stage-copy {
    width: 100%;
  }

  .stage-media .product-evidence-primary .product-evidence-frame,
  .stage-media .placeholder {
    min-height: 250px;
  }

  .stage-media .product-evidence-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .stage-media .product-evidence-caption {
    margin-top: 7px;
  }

  .normalize-gallery {
    --normalize-description-min-height: calc(5 * 1lh);
    --normalize-copy-min-height: calc(var(--normalize-title-min-height) + 8px + var(--normalize-description-min-height));
    gap: 12px;
  }

  .normalize-gallery-trigger {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 10px;
    padding: 11px;
  }

  .normalize-gallery-trigger-preview {
    min-height: 68px;
  }

  .normalize-gallery-description {
    font-size: 15px;
  }

  .normalize-gallery-selectors {
    grid-template-columns: minmax(0, 1fr);
  }

  .normalize-structure-panel {
    gap: 14px;
    padding: 16px;
  }

  .normalize-node,
  .normalize-node-detail {
    font-size: 12px;
  }

  .sync-gallery {
    --sync-description-min-height: calc(4 * 1lh);
    --sync-copy-min-height: calc(var(--sync-title-min-height) + 8px + var(--sync-description-min-height));
    gap: 16px;
  }

  .sync-gallery-nav {
    gap: 10px;
    margin-top: 20px;
  }

  .sync-gallery-button {
    padding: 12px;
  }

  .sync-gallery-description,
  .sync-gallery-expansion-description {
    font-size: 15px;
  }

  .compose-evidence-description {
    font-size: 15px;
  }

  .sync-gallery-expansion-items {
    gap: 8px;
  }
  .sync .caption {
    max-width: 28ch;
    line-height: 1.5;
  }

  .sync .caption .status {
    display: block;
    margin-top: 5px;
    margin-left: 0;
  }

  .evidence-head,
  .closing-inner {
    display: block;
  }

  .evidence-head p {
    margin-top: 30px;
  }

  .three-ways-intro {
    display: block;
  }

  .three-ways-intro p {
    margin-top: 30px;
  }

  .evidence-frame .placeholder {
    min-height: 250px;
    height: 68vw;
  }

  .evidence-frame .product-evidence-frame {
    min-height: 250px;
  }

  .boundary {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .three-ways {
    padding: 80px 0 105px;
  }

  .three-ways-row {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 24px 22px;
  }

  .three-ways-primary {
    font-size: 20px;
  }

  .three-ways-secondary {
    font-size: 16px;
  }

  .three-ways-closing {
    max-width: 14ch;
    font-size: 24px;
  }

  .closing {
    padding: 105px 0 60px;
  }

  .closing h2 {
    max-width: 11ch;
    font-size: 70px;
  }

  .closing p {
    margin-top: 45px;
  }

  .footer {
    display: block;
    margin-top: 75px;
  }

  .footer .mono {
    margin-top: 14px;
  }

  .document-header .wrap {
    width: min(var(--hero-measure), calc(100% - 40px));
  }

  .document-hero {
    padding: 112px 0 76px;
  }

  .document-intro {
    max-width: 34ch;
    font-size: 18px;
  }

  .document-content-primary {
    padding: 40px 0 78px;
  }

  .document-content-secondary {
    padding: 58px 0 88px;
  }

  .document-content-inner {
    gap: 68px;
  }

  .principles-chapter {
    gap: 14px;
  }

  .principles-section p.principles-lead {
    font-size: 21px;
  }

  .principles-orientation {
    padding: 44px 0 52px;
  }

  .principles-orientation-shell {
    gap: 14px;
  }

  .principles-section.principles-orientation .principles-orientation-answer {
    max-width: 16ch;
    font-size: clamp(34px, 8.4vw, 52px);
    line-height: 1.02;
  }

  .principles-section-surface,
  .principles-section-emphasis {
    padding: 30px 24px;
  }

  .principles-section-intro,
  .principles-contrast,
  .principles-anatomy,
  .principles-orchestration-map {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles-section-intro p {
    margin-top: 0;
  }

  .principles-systems-evidence {
    margin-top: 42px;
  }

  .principles-orchestration-map {
    grid-template-areas:
      "tools"
      "dimensions"
      "canonical"
      "representations";
    gap: 24px;
  }

  .principles-orchestration-core {
    min-height: 0;
  }

  .principles-orchestration-list {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .principles-orchestration-dimension-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles-bullet-list {
    font-size: 18px;
  }

  .principles-dimension-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles-anatomy-figure {
    padding: 22px;
  }

  .principles-anatomy-dimensions {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .principles-change-list {
    font-size: 16px;
  }

  .principles-why-light {
    padding: 52px 0 64px;
  }

  .principles-why-shell {
    gap: 24px;
  }

  .principles-why-evidence {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles-why-panel {
    padding: 24px 22px;
  }

  .principles-ordered-list li {
    padding: 18px 0 18px 48px;
    font-size: 18px;
  }

  .principles-ordered-list li::before {
    top: 19px;
    left: 0;
  }

  .principles-contrast-notes {
    gap: 8px;
  }

  .principles-contrast-notes p {
    display: grid;
    justify-content: start;
    gap: 4px;
  }

  .principles-contrast-notes p span[aria-hidden="true"] {
    display: none;
  }

  .principles-orchestration-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .document-closing {
    padding: 30px 0 92px;
  }

  .document-closing p {
    font-size: 18px;
  }

  .document-footer {
    padding-bottom: 28px;
  }
}

/* ============================================================
   REDUCED-MOTION RULES
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .compose-evidence-video {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .principles-page .reveal,
  html.principles-reveal-ready .principles-page .reveal,
  html.principles-reveal-ready .principles-page .reveal.visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .principles-page [class*="principles-reveal-stagger-"] {
    transition-delay: 0s;
  }

}