:root {
  --page: #f7faf5;
  --page-deep: #edf3ea;
  --paper: rgba(255, 255, 255, 0.82);
  --paper-solid: #ffffff;
  --forest: #193d2b;
  --forest-soft: rgba(25, 61, 43, 0.76);
  --sage: #c8d9c4;
  --sage-strong: #78957b;
  --moss: #a8c070;
  --stone: #647166;
  --stone-soft: rgba(100, 113, 102, 0.78);
  --line: rgba(25, 61, 43, 0.1);
  --line-strong: rgba(25, 61, 43, 0.18);
  --warm: #fdfcf7;
  --orange: #f27931;
  --shadow: 0 28px 90px rgba(40, 72, 49, 0.08);
  --shadow-hover: 0 34px 110px rgba(40, 72, 49, 0.12);
  --radius: 28px;
  --radius-soft: 18px;
  --content: 1440px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(247, 250, 245, 0.9) 42%, var(--page-deep)),
    var(--page);
  color: var(--forest);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(130deg, rgba(120, 149, 123, 0.08), transparent 34%),
    linear-gradient(300deg, rgba(242, 121, 49, 0.045), transparent 32%);
  z-index: -1;
}

img,
canvas {
  display: block;
  max-width: 100%;
}

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

p,
h1,
h2,
h3,
blockquote,
figure {
  margin: 0;
}

p {
  color: var(--forest-soft);
  font-size: 1rem;
  line-height: 1.82;
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  letter-spacing: 0;
}

h1 {
  max-width: 9ch;
  font-size: 4.4rem;
  line-height: 0.92;
  font-weight: 500;
}

h2 {
  max-width: 950px;
  font-size: 2.5rem;
  line-height: 1.05;
  font-weight: 500;
}

h3 {
  color: var(--forest);
  font-size: 1.42rem;
  line-height: 1.2;
  font-weight: 500;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 200;
  transform: translateY(-140%);
  border-radius: 999px;
  background: var(--forest);
  color: #fff;
  padding: 0.7rem 1rem;
  font-size: 0.9rem;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 250, 245, 0.78);
  backdrop-filter: blur(28px);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 26px rgba(44, 72, 50, 0.05);
}

.brand-mark img {
  width: 33px;
  height: 33px;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1.05rem;
  font-weight: 500;
}

.brand small {
  margin-top: 0.18rem;
  color: var(--stone-soft);
  font-size: 0.82rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1.25rem;
}

.site-nav a,
.site-footer a {
  position: relative;
  color: var(--stone);
  font-size: 0.92rem;
  transition: color 240ms var(--ease);
}

.site-nav a::after,
.site-footer a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.4rem;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--forest);
  transition: transform 260ms var(--ease);
}

.site-nav a:hover,
.site-nav a.active,
.site-footer a:hover {
  color: var(--forest);
}

.site-nav a:hover::after,
.site-nav a.active::after,
.site-footer a:hover::after {
  transform: scaleX(1);
}

.section-pad {
  width: min(100%, var(--content));
  margin: 0 auto;
  padding: 6.5rem 2rem;
}

[id] {
  scroll-margin-top: 92px;
}

.hero {
  display: grid;
  min-height: 760px;
  align-items: center;
  gap: 4rem;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.hero > *,
.split > *,
.electronics > *,
.model-feature > *,
.vision-panel > *,
.overview-grid > *,
.story-board > *,
.flow-diagram > *,
.timeline > *,
.ideation-mosaic > *,
.decision-grid > *,
.gallery-grid > *,
.build-sequence > *,
.control-grid > *,
.testing-layout > *,
.sol-visuals > *,
.future-grid > * {
  min-width: 0;
}

.digital-grid > * {
  min-width: 0;
}

.hero-subtitle {
  margin-top: 1.4rem;
  max-width: 650px;
  color: var(--forest);
  font-size: 1.55rem;
  line-height: 1.3;
}

.hero-intro {
  margin-top: 1.5rem;
  max-width: 680px;
  font-size: 1.08rem;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.55rem;
}

.hero-facts span {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--forest-soft);
  padding: 0.52rem 0.82rem;
  font-size: 0.86rem;
}

.section-label {
  margin-bottom: 1.05rem;
  color: var(--sage-strong);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.3;
  text-transform: uppercase;
}

.chapter-heading {
  display: grid;
  align-items: start;
  gap: 1.4rem;
  grid-template-columns: 82px minmax(0, 1fr);
  max-width: 1080px;
  margin-bottom: 3rem;
}

.chapter-heading.center {
  grid-template-columns: 1fr;
  max-width: 940px;
  margin-inline: auto;
  text-align: center;
}

.chapter-heading.center .chapter-number {
  margin-inline: auto;
}

.chapter-heading p:not(.section-label) {
  max-width: 760px;
  font-size: 1.08rem;
}

.chapter-heading.center p,
.chapter-heading.center h2 {
  margin-inline: auto;
}

.chapter-number {
  display: grid;
  width: 58px;
  height: 58px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  color: var(--sage-strong);
  font-size: 0.82rem;
  font-weight: 700;
}

.media-card,
.wide-media,
.info-card,
.callout,
.vision-panel,
.quote-panel,
.decision-card,
.model-shell {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(250, 252, 247, 0.84)),
    var(--paper);
  box-shadow: var(--shadow);
}

.media-card,
.wide-media,
.model-shell {
  overflow: hidden;
  transition:
    transform 460ms var(--ease),
    box-shadow 460ms var(--ease),
    border-color 320ms var(--ease);
}

.media-card:hover,
.wide-media:hover,
.model-shell:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hover);
}

.media-card img,
.wide-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-media img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

figcaption {
  color: var(--stone-soft);
  font-size: 0.92rem;
  line-height: 1.65;
  padding: 1rem 1.1rem 1.2rem;
}

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

.info-card {
  min-height: 250px;
  padding: 1.45rem;
}

.info-card span,
.detail-list span,
.problem-solution span,
.timeline span,
.decision-card span {
  display: block;
  margin-bottom: 0.85rem;
  color: var(--forest);
  font-size: 0.92rem;
  font-weight: 700;
}

.info-card p,
.detail-list p {
  font-size: 1.02rem;
}

.split {
  display: grid;
  align-items: center;
  gap: 4rem;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.split.compact {
  align-items: start;
  padding-top: 3.25rem;
}

.section-copy {
  display: grid;
  gap: 1.35rem;
}

.section-copy p:not(.section-label) {
  max-width: 720px;
  font-size: 1.06rem;
}

.problem-solution {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.6rem;
}

.problem-solution article,
.timeline article,
.detail-list article {
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background: rgba(255, 255, 255, 0.58);
  padding: 1.1rem;
}

.quote-panel {
  max-width: 1080px;
  margin: 0 auto 2rem;
  padding: 3rem;
  text-align: center;
}

.quote-panel blockquote {
  max-width: 920px;
  margin: 0 auto;
  color: var(--forest);
  font-size: 3rem;
  line-height: 1.02;
  font-weight: 500;
}

.quote-panel p:not(.section-label) {
  max-width: 720px;
  margin: 1.25rem auto 0;
  font-size: 1.08rem;
}

.story-board {
  display: grid;
  gap: 1rem;
  grid-template-columns: 0.9fr 1.2fr 0.9fr;
}

.story-board img,
.ideation-mosaic img,
.future-grid img,
.sol-visuals img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.media-card img[src*="case-"],
.wide-media img[src*="case-"] {
  background: #f7faf5;
  object-fit: contain;
}

.story-board img[src*="case-"],
.ideation-mosaic img[src*="case-"],
.future-grid img[src*="case-"] {
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.flow-diagram {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin-top: 3.25rem;
}

.flow-step {
  position: relative;
  min-height: 230px;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.72);
}

.flow-step::after {
  content: "";
  position: absolute;
  top: 32px;
  right: -0.92rem;
  width: 0.92rem;
  height: 1px;
  background: var(--line-strong);
}

.flow-step:last-child::after {
  display: none;
}

.flow-step span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: rgba(168, 192, 112, 0.18);
  color: var(--forest);
  font-size: 0.82rem;
  font-weight: 700;
}

.flow-step strong {
  display: block;
  margin-top: 1.25rem;
  font-size: 1.12rem;
  font-weight: 600;
}

.flow-step small {
  display: block;
  margin-top: 0.7rem;
  color: var(--stone-soft);
  font-size: 0.86rem;
  line-height: 1.55;
}

.wide-media {
  margin-top: 2rem;
}

.wide-media img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.wide-media img[src*="case-"] {
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.timeline {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 1.2rem;
}

.timeline article {
  min-height: 176px;
}

.ideation-mosaic {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.ideation-mosaic .media-card {
  grid-column: span 3;
}

.ideation-mosaic .media-card.tall {
  grid-column: span 2;
  grid-row: span 2;
}

.ideation-mosaic .media-card:nth-child(4),
.ideation-mosaic .media-card:nth-child(5) {
  grid-column: span 2;
}

.ideation-mosaic .tall img {
  aspect-ratio: 3 / 4.35;
}

.decision-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1rem;
}

.decision-card {
  min-height: 240px;
  padding: 1.45rem;
}

.decision-card span {
  color: var(--sage-strong);
}

.decision-card h3 {
  margin-bottom: 0.8rem;
}

.model-feature {
  display: grid;
  align-items: center;
  gap: 2rem;
  grid-template-columns: minmax(0, 0.68fr) minmax(0, 1.32fr);
  margin-bottom: 2rem;
}

.model-copy {
  display: grid;
  gap: 1.1rem;
}

.model-copy p:not(.section-label) {
  max-width: 620px;
}

.model-stage {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 520px;
  aspect-ratio: 16 / 10;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(231, 239, 228, 0.78)),
    var(--page);
}

.model-stage canvas {
  width: 100%;
  height: 100%;
}

.model-status {
  position: absolute;
  inset: auto 1rem 1rem 1rem;
  z-index: 2;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--forest-soft);
  padding: 0.72rem 0.95rem;
  text-align: center;
  font-size: 0.9rem;
  backdrop-filter: blur(18px);
}

.model-stage.is-loaded .model-status {
  opacity: 0;
  pointer-events: none;
}

.gallery-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-top: 2rem;
}

.build-sequence {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2rem;
}

.build-sequence img {
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.gallery-grid .media-card {
  grid-column: span 3;
}

.gallery-grid .media-card.large {
  grid-column: span 4;
  grid-row: span 2;
}

.gallery-grid .media-card:not(.large):nth-child(2) {
  grid-column: span 2;
}

.gallery-grid img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.gallery-grid .large img {
  aspect-ratio: 16 / 12;
}

.electronics {
  display: grid;
  align-items: start;
  gap: 3rem;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
}

.detail-list {
  display: grid;
  gap: 0.85rem;
  margin-top: 0.7rem;
}

.control-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 1fr;
}

.control-grid .media-card:first-child {
  grid-column: 1 / -1;
}

.control-grid img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.control-grid .media-card:nth-child(3) img,
.control-grid .media-card:nth-child(4) img {
  aspect-ratio: 1 / 1.12;
}

.control-grid img[src*="case-"] {
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.testing-layout {
  display: grid;
  align-items: stretch;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.testing-layout .media-card:first-child {
  grid-column: span 2;
}

.testing-layout .media-card.tall {
  grid-row: span 2;
}

.testing-layout img {
  aspect-ratio: 4 / 3;
  height: 100%;
  object-fit: cover;
}

.testing-layout .tall img {
  aspect-ratio: 3 / 4;
}

.testing-layout img[src*="case-"] {
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.callout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 3rem;
  text-align: center;
}

.callout p {
  color: var(--forest);
  font-size: 2.6rem;
  line-height: 1.08;
}

.sol-visuals {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 1fr;
}

.digital-ecosystem {
  max-width: 1480px;
}

.digital-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.digital-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(250, 252, 247, 0.84)),
    var(--paper);
  box-shadow: var(--shadow);
}

.browser-mockup {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.browser-chrome {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  min-height: 46px;
  padding: 0.72rem 0.9rem;
  border-bottom: 1px solid rgba(25, 61, 43, 0.08);
  background: rgba(255, 255, 255, 0.64);
}

.browser-chrome span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(25, 61, 43, 0.18);
}

.browser-chrome small {
  display: block;
  min-width: 0;
  margin-left: 0.35rem;
  overflow: hidden;
  color: var(--stone-soft);
  font-size: 0.78rem;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.browser-mockup img {
  width: 100%;
  aspect-ratio: 16 / 9.35;
  object-fit: cover;
  object-position: top center;
}

.digital-copy {
  display: grid;
  gap: 1rem;
  padding: 1.45rem;
}

.digital-copy .section-label {
  margin-bottom: 0;
}

.digital-copy p:not(.section-label) {
  font-size: 1.02rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.skill-tags li {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--forest-soft);
  padding: 0.46rem 0.72rem;
  font-size: 0.82rem;
  line-height: 1.2;
}

.prototype-link {
  display: inline-flex;
  width: fit-content;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--forest);
  color: #fff;
  padding: 0.72rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  transition:
    transform 240ms var(--ease),
    background 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.prototype-link:hover {
  transform: translateY(-2px);
  background: #25533b;
  box-shadow: 0 16px 44px rgba(25, 61, 43, 0.18);
}

.prototype-link:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 4px;
}

.vision-panel {
  display: grid;
  align-items: center;
  gap: 3rem;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  overflow: hidden;
  padding: 3rem;
}

.vision-panel p:not(.section-label) {
  max-width: 760px;
  margin-top: 1.2rem;
  font-size: 1.08rem;
}

.vision-panel figure {
  overflow: hidden;
  border-radius: 22px;
}

.vision-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.vision-panel img[src*="case-"] {
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: #f7faf5;
}

.future-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: min(100%, var(--content));
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
  border-top: 1px solid var(--line);
}

.site-footer div {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-footer img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.site-footer p {
  color: var(--stone);
  font-size: 0.96rem;
}

.sound-toggle {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 140;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 0.62rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--forest);
  padding: 0.62rem 0.9rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 16px 48px rgba(40, 72, 49, 0.12);
  cursor: pointer;
  backdrop-filter: blur(18px);
  transition:
    transform 240ms var(--ease),
    border-color 240ms var(--ease),
    background 240ms var(--ease);
}

.sound-toggle:hover {
  transform: translateY(-2px);
  border-color: rgba(25, 61, 43, 0.28);
  background: rgba(255, 255, 255, 0.9);
}

.sound-toggle:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 4px;
}

.sound-indicator {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(100, 113, 102, 0.42);
  transition:
    background 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.sound-toggle.is-on .sound-indicator {
  background: var(--moss);
  box-shadow: 0 0 0 7px rgba(168, 192, 112, 0.18);
}

.sound-toggle[hidden] {
  display: none;
}

.lightbox-trigger {
  cursor: zoom-in;
}

.lightbox-trigger:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 5px;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2.4rem);
  background:
    radial-gradient(circle at 30% 18%, rgba(255, 255, 255, 0.38), transparent 34%),
    radial-gradient(circle at 78% 72%, rgba(168, 192, 112, 0.18), transparent 30%),
    rgba(245, 249, 242, 0.62);
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(30px) saturate(1.18);
  transition: opacity 260ms var(--ease);
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 4vw, 4rem);
}

.lightbox-figure {
  position: relative;
  display: grid;
  max-width: min(94vw, 1680px);
  max-height: calc(100dvh - 7.5rem);
  place-items: center;
  transform: scale(0.965) translateY(10px);
  opacity: 0;
  transition:
    transform 320ms var(--ease),
    opacity 240ms var(--ease);
}

.lightbox.is-open .lightbox-figure {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.lightbox-figure img {
  width: auto;
  max-width: min(94vw, 1680px);
  max-height: calc(100dvh - 9.6rem);
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: clamp(16px, 2.4vw, 30px);
  background: rgba(255, 255, 255, 0.72);
  box-shadow:
    0 34px 120px rgba(25, 61, 43, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
  object-fit: contain;
}

.lightbox-figure figcaption {
  width: min(94vw, 1180px);
  margin-top: 0.78rem;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: rgba(25, 61, 43, 0.78);
  padding: 0.74rem 1rem;
  text-align: center;
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 44px rgba(25, 61, 43, 0.1);
}

.lightbox-close,
.lightbox-nav {
  position: fixed;
  z-index: 2;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.66);
  color: var(--forest);
  font: inherit;
  font-weight: 700;
  box-shadow: 0 18px 58px rgba(25, 61, 43, 0.16);
  cursor: pointer;
  backdrop-filter: blur(18px);
  transition:
    transform 220ms var(--ease),
    background 220ms var(--ease),
    opacity 220ms var(--ease);
}

.lightbox-close {
  top: max(1rem, env(safe-area-inset-top));
  right: max(1rem, env(safe-area-inset-right));
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-size: 0.9rem;
}

.lightbox-nav {
  top: 50%;
  width: 48px;
  height: 58px;
  border-radius: 999px;
  transform: translateY(-50%);
  font-size: 1.1rem;
}

.lightbox-prev {
  left: max(1rem, env(safe-area-inset-left));
}

.lightbox-next {
  right: max(1rem, env(safe-area-inset-right));
}

.lightbox-close:hover,
.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.84);
}

.lightbox-close:hover {
  transform: translateY(-2px);
}

.lightbox-nav:hover {
  transform: translateY(-50%) scale(1.04);
}

.lightbox-close:focus-visible,
.lightbox-nav:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 4px;
}

.lightbox-nav[disabled] {
  opacity: 0;
  pointer-events: none;
}

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

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 720ms var(--ease),
    transform 720ms var(--ease);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js [id]:target .reveal,
.js .reveal:target {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 90ms;
}

.delay-2 {
  transition-delay: 170ms;
}

@media (max-width: 1180px) {
  h1 {
    font-size: 3.6rem;
  }

  h2 {
    font-size: 2.15rem;
  }

  .hero,
  .split,
  .electronics,
  .vision-panel,
  .model-feature {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }

  .story-board,
  .timeline,
  .build-sequence,
  .future-grid,
  .digital-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-diagram {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-step {
    min-height: 180px;
  }

  .flow-step::after {
    display: none;
  }

  .overview-grid {
    grid-template-columns: 1fr;
  }

  .info-card {
    min-height: 0;
  }

  .gallery-grid .media-card,
  .gallery-grid .media-card.large,
  .gallery-grid .media-card:not(.large):nth-child(2) {
    grid-column: span 6;
  }

  .ideation-mosaic .media-card,
  .ideation-mosaic .media-card.tall,
  .ideation-mosaic .media-card:nth-child(4),
  .ideation-mosaic .media-card:nth-child(5) {
    grid-column: span 3;
    grid-row: span 1;
  }

  .decision-grid {
    grid-template-columns: 1fr;
  }

  .testing-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    position: relative;
    align-items: flex-start;
    padding: 1rem;
  }

  .site-nav {
    display: none;
  }

  .section-pad {
    padding: 4.25rem 1rem;
  }

  h1 {
    font-size: 3rem;
  }

  h2,
  .callout p,
  .quote-panel blockquote {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.2rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .chapter-heading {
    grid-template-columns: 1fr;
  }

  .chapter-number {
    width: 50px;
    height: 50px;
  }

  .story-board,
  .timeline,
  .build-sequence,
  .future-grid,
  .digital-grid,
  .flow-diagram,
  .control-grid,
  .testing-layout,
  .problem-solution,
  .sol-visuals {
    grid-template-columns: 1fr;
  }

  .ideation-mosaic {
    grid-template-columns: 1fr;
  }

  .ideation-mosaic .media-card,
  .ideation-mosaic .media-card.tall,
  .ideation-mosaic .media-card:nth-child(4),
  .ideation-mosaic .media-card:nth-child(5) {
    grid-column: span 1;
  }

  .testing-layout .media-card:first-child {
    grid-column: span 1;
  }

  .testing-layout .media-card.tall {
    grid-row: span 1;
  }

  .model-stage {
    min-height: 380px;
  }

  .quote-panel,
  .callout,
  .vision-panel {
    padding: 1.4rem;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    padding-inline: 1rem;
  }

  .sound-toggle {
    right: 0.9rem;
    bottom: 0.9rem;
    min-height: 42px;
    padding: 0.55rem 0.78rem;
    font-size: 0.82rem;
  }

  .browser-chrome {
    min-height: 40px;
    padding: 0.58rem 0.72rem;
  }

  .digital-copy {
    padding: 1.1rem;
  }

  .prototype-link {
    width: 100%;
  }

  .lightbox {
    padding: 0.75rem;
  }

  .lightbox-stage {
    padding: 3.9rem 0.75rem 4.7rem;
  }

  .lightbox-figure {
    max-width: calc(100vw - 1.5rem);
    max-height: calc(100dvh - 8rem);
  }

  .lightbox-figure img {
    max-width: calc(100vw - 1.5rem);
    max-height: calc(100dvh - 10.5rem);
    border-radius: 18px;
  }

  .lightbox-figure figcaption {
    width: calc(100vw - 1.5rem);
    border-radius: 18px;
    padding: 0.72rem 0.82rem;
    font-size: 0.82rem;
    line-height: 1.45;
  }

  .lightbox-close {
    width: 42px;
    height: 42px;
  }

  .lightbox-nav {
    top: auto;
    bottom: max(0.85rem, env(safe-area-inset-bottom));
    width: 44px;
    height: 44px;
    transform: none;
  }

  .lightbox-prev {
    left: calc(50% - 56px);
  }

  .lightbox-next {
    right: calc(50% - 56px);
  }

  .lightbox-nav:hover {
    transform: scale(1.04);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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

  .lightbox,
  .lightbox-figure,
  .lightbox-close,
  .lightbox-nav {
    transition-duration: 0.01ms !important;
  }
}