:root {
  --page: #fafbfc;
  --surface: #ffffff;
  --soft: #f1f2f4;
  --ink: #253746;
  --body: #515f6b;
  --muted: #686e7d;
  --line: #dfe4e8;
  --pill: #dce1e8;
  --pill-disabled: #eef1f4;
  --blue: #3157d5;
  --blue-soft: #eaf4ff;
  --shadow: 0 18px 48px rgba(37, 55, 70, 0.08);
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 106px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--page);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  background: rgba(250, 251, 252, 0.94);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  width: min(960px, calc(100% - 48px));
  height: 84px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand,
.nav-links,
.nav-links a {
  display: flex;
  align-items: center;
}

.brand {
  width: 48px;
  height: 48px;
  justify-content: center;
  border-radius: 10px;
}

.brand-mark {
  position: relative;
  width: 42px;
  height: 38px;
}

.brand-mark i {
  position: absolute;
  width: 15px;
  height: 15px;
  background: rgba(0, 0, 0, 0.78);
}

.brand-mark i:nth-child(1) { top: 0; left: 10px; }
.brand-mark i:nth-child(2) { top: 8px; left: 20px; }
.brand-mark i:nth-child(3) { top: 23px; left: 0; }
.brand-mark i:nth-child(4) { top: 23px; left: 27px; }

.nav-links {
  gap: 12px;
}

.nav-links a {
  min-height: 42px;
  justify-content: center;
  padding: 9px 18px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--pill);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 24px;
  white-space: nowrap;
  transition: color 180ms ease, background 180ms ease, transform 120ms ease;
}

.nav-links a.is-active {
  color: #fff;
  background: #636977;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
  background: #cfd5dc;
  outline: none;
}

.nav-links a.is-active:hover,
.nav-links a.is-active:focus-visible {
  color: #fff;
  background: #636977;
  outline: 2px solid rgba(52, 143, 255, 0.4);
  outline-offset: 2px;
}

.brand:focus-visible,
.mobile-toggle:focus-visible {
  outline: 2px solid rgba(52, 143, 255, 0.58);
  outline-offset: 3px;
}

.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: var(--surface);
  cursor: pointer;
}

.section {
  padding: clamp(92px, 9vw, 132px) 24px;
  background: var(--page);
}

.section--soft {
  background: var(--soft);
}

.container {
  width: min(960px, 100%);
  margin: 0 auto;
}

.hero {
  padding-top: 108px;
}

.hero-copy {
  max-width: 950px;
  margin: 0 auto;
  padding: 52px 0 42px;
  text-align: center;
}

.eyebrow,
.chapter-head > span {
  display: block;
  margin: 0 0 18px;
  color: var(--body);
  font-size: 12px;
  font-weight: 400;
  line-height: 20px;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 26px;
  font-size: 52px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 60px;
  white-space: normal;
}

.lead {
  max-width: 760px;
  margin: 0 auto;
  color: var(--body);
  font-size: 20px;
  line-height: 28px;
}

.feature-frame {
  overflow: hidden;
  margin: 0;
  border: 1px solid #edf0f2;
  border-radius: 20px;
  background: #e9edf1;
  padding: clamp(18px, 3vw, 42px);
}

.feature-frame img {
  width: 100%;
  height: auto;
  border: 1px solid rgba(117, 132, 146, 0.12);
  border-radius: 12px;
  box-shadow: 0 18px 46px rgba(37, 55, 70, 0.09);
}

.feature-frame.has-zoom,
.panel-visual.has-zoom,
.tab-panel--visual.has-zoom,
.design-shot.has-zoom {
  position: relative;
}

.is-zoomable {
  cursor: zoom-in;
}

.is-zoomable:focus-visible {
  outline: 3px solid rgba(52, 143, 255, 0.42);
  outline-offset: -3px;
}

.feature-frame--hero {
  margin-bottom: 46px;
  padding: clamp(24px, 5vw, 68px);
}

.feature-frame--hero img {
  box-shadow: none;
}

#highlights .feature-frame--wide img {
  box-shadow: none;
}

#system .feature-frame--wide img {
  box-shadow: none;
}

.feature-frame--wide {
  padding: clamp(18px, 2.4vw, 32px);
}

.feature-frame--compact {
  margin-top: 28px;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.52fr) minmax(0, 1.48fr);
  gap: clamp(48px, 9vw, 120px);
  align-items: start;
  padding: 52px 0;
  border-bottom: 1px solid var(--line);
}

.intro-grid h2 {
  margin: 0;
  color: var(--ink);
  font-size: 36px;
  font-weight: 400;
  line-height: 44px;
  letter-spacing: 0;
}

.intro-grid > p {
  margin-bottom: 0;
  color: var(--body);
  font-size: 16px;
  line-height: 24px;
}

.intro-grid--details {
  border-bottom: 0;
}

.project-details {
  display: grid;
  gap: 18px;
  margin: 0;
}

.project-details div {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
}

.project-details dt {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.project-details dt img {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  opacity: 0.62;
}

.project-details dd {
  margin: 0;
  color: var(--body);
  line-height: 1.8;
}

.chapter-head {
  max-width: 720px;
  margin: 0 0 52px;
  text-align: left;
}

.chapter-head h2 {
  margin-bottom: 16px;
  font-size: 36px;
  font-weight: 400;
  line-height: 44px;
  letter-spacing: 0;
}

.chapter-head p {
  max-width: 62ch;
  margin: 0;
  color: var(--body);
  font-size: 16px;
  line-height: 24px;
}

.chapter-head--center {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.chapter-head--center p {
  margin-right: auto;
  margin-left: auto;
}

.case-tabs {
  width: 100%;
}

.tab-list {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 34px;
}

.case-tab {
  min-height: 44px;
  padding: 10px 18px;
  border: 0;
  border-radius: 999px;
  color: #111;
  background: var(--pill);
  font-size: 16px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease;
}

.case-tab:not(:disabled):hover {
  background: #cfd6df;
}

.case-tab:not(:disabled):active,
.flow-prototype-button:active,
.nav-links a:active {
  transform: scale(0.98);
}

.case-tab:not(:disabled):focus-visible {
  outline: 3px solid rgba(52, 143, 255, 0.36);
  outline-offset: 3px;
}

.case-tab.is-active {
  color: #fff;
  background: #636977;
  box-shadow: none;
}

.case-tab:disabled {
  color: #98a3ad;
  background: var(--pill-disabled);
  cursor: not-allowed;
  opacity: 1;
}

.tab-panel {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.28fr);
  min-height: 470px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  animation: panel-in 220ms ease both;
}

.tab-panel[hidden] {
  display: none;
}

.discovery-copy {
  align-self: center;
  padding: 52px;
}

.discovery-copy h3 {
  margin-bottom: 18px;
  font-size: 32px;
  font-weight: 400;
  line-height: 40px;
}

.discovery-copy p,
.discovery-copy li {
  color: var(--body);
  font-size: 16px;
  line-height: 24px;
}

.discovery-copy ol {
  margin: 0;
  padding-left: 20px;
}

.panel-visual {
  display: grid;
  margin: 0;
  padding: 28px;
  place-items: center;
  background: var(--soft);
}

.panel-visual img {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.strategy-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(42px, 7vw, 96px);
  border-top: 1px solid var(--line);
}

.strategy-cards article {
  min-height: 0;
  padding: 32px 0 12px;
}

.strategy-cards small {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.strategy-cards h3 {
  max-width: 500px;
  margin: 26px 0 0;
  font-size: 32px;
  font-weight: 400;
  line-height: 40px;
}

.roadmap {
  margin-top: 64px;
  padding: 34px 0 44px;
  border-top: 1px solid var(--line);
}

.roadmap > h3 {
  margin: 0 0 0 36px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.roadmap-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 54px;
  padding-top: 32px;
}

.roadmap-track::before {
  position: absolute;
  top: 0;
  right: 16.666%;
  left: 16.666%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, #55697d 0 50%, #55697d 50%, #16b8c8 100%);
}

.roadmap-track article {
  position: relative;
  padding: 0 clamp(18px, 2.4vw, 34px);
}

.roadmap-dot {
  position: absolute;
  top: -32px;
  left: 50%;
  z-index: 1;
  width: 8px;
  height: 8px;
  border: 0;
  border-radius: 50%;
  background: #55697d;
  transform: translate(-50%, -50%);
}

.roadmap-dot--active {
  background: #16b8c8;
}

.roadmap-track h4 {
  margin: 0 0 24px;
  font-size: 17px;
  font-weight: 500;
  text-align: center;
}

.roadmap-track p {
  max-width: 300px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
  text-align: center;
}

.flow-map-text {
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--soft);
}

.flow-map-intro h3 {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 500;
}

.flow-map-intro p {
  margin-bottom: 0;
  color: var(--body);
  font-size: 14px;
  line-height: 1.8;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 30px;
  margin: 30px 0 28px;
  padding: 0;
  list-style: none;
}

.flow-steps li {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 96px;
  padding: 14px 15px 12px;
  border-radius: 7px;
  flex-direction: column;
  justify-content: center;
  gap: 9px;
  background: #54a1ef;
  color: #fff;
}

.flow-steps li:nth-child(2) {
  background: #579eef;
}

.flow-steps li:nth-child(3) {
  background: #5879ec;
}

.flow-steps li:nth-child(4) {
  background: #3cc293;
}

.flow-steps li:nth-child(5) {
  background: #626b7f;
}

.flow-steps li:not(:last-child)::after {
  position: absolute;
  z-index: 0;
  top: 50%;
  right: -30px;
  width: 30px;
  height: 1px;
  content: "";
  background: #9da8b2;
}

.flow-steps b {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.flow-steps span {
  display: grid;
  min-height: 42px;
  padding: 8px 10px;
  border-radius: 5px;
  place-items: center;
  color: #263849;
  background: rgba(255, 255, 255, 0.94);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  text-align: center;
}

.flow-steps small {
  display: block;
  color: rgba(255, 255, 255, 0.92);
  font-size: 12px;
  line-height: 1.3;
  text-align: center;
}

.flow-prototype-button {
  display: flex;
  width: fit-content;
  min-height: 42px;
  margin: 0 auto;
  padding: 10px 18px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--pill);
  font-size: 14px;
  font-weight: 500;
  transition: background 180ms ease;
}

.flow-prototype-button:hover,
.flow-prototype-button:focus-visible {
  background: #cfd6df;
  outline: none;
}

.flow-prototype-button:focus-visible {
  outline: 3px solid rgba(52, 143, 255, 0.36);
  outline-offset: 3px;
}

.process-video {
  overflow: hidden;
  margin: 38px 0 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #111820;
}

.process-video video {
  display: block;
  width: 100%;
  aspect-ratio: 1976 / 1080;
  background: #111820;
}

.process-video figcaption {
  display: none;
}

.tab-panel--visual {
  display: block;
  min-height: 0;
  background: var(--soft);
}

.tab-panel--visual img {
  width: 100%;
}

.tab-panel--gallery {
  display: block;
  min-height: 0;
  padding: clamp(24px, 4vw, 54px);
  background: var(--soft);
}

.design-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 26px);
}

.gallery-intro {
  max-width: 680px;
  margin-bottom: 36px;
}

.gallery-intro h3,
.design-feature h3 {
  margin-bottom: 12px;
  font-size: clamp(25px, 2.6vw, 34px);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.gallery-intro p,
.design-feature header p {
  margin-bottom: 0;
  color: var(--body);
  font-size: 15px;
  line-height: 1.8;
}

.design-gallery--rail {
  grid-template-columns: none;
  grid-auto-flow: column;
  grid-auto-columns: minmax(360px, 48%);
  gap: 20px;
  overflow-x: auto;
  padding: 2px 2px 18px;
  scroll-padding-inline: 2px;
  scroll-snap-type: x mandatory;
  scrollbar-color: #b8c2cc transparent;
  scrollbar-width: thin;
}

.design-gallery--rail .design-shot {
  scroll-snap-align: start;
}

.design-shot {
  position: relative;
  overflow: hidden;
  margin: 0;
  border: 1px solid #e3e8ec;
  border-radius: 14px;
  background: var(--surface);
  transition: border-color 180ms ease, transform 180ms ease;
}

.design-shot:hover {
  border-color: rgba(52, 143, 255, 0.52);
  transform: translateY(-2px);
}

.design-shot img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #f5f7f9;
}

.design-shot figcaption {
  display: none;
}

.design-features {
  display: grid;
  gap: clamp(76px, 9vw, 116px);
}

.design-feature {
  padding-top: 34px;
  border-top: 1px solid #d8dee4;
}

.design-feature header {
  max-width: 680px;
  margin-bottom: 30px;
}

.feature-media {
  display: grid;
  gap: 20px;
}

.feature-media--pair {
  grid-template-columns: 1.12fr 0.88fr;
  align-items: start;
}

.design-feature:nth-child(2) .feature-media--pair {
  grid-template-columns: 0.88fr 1.12fr;
}

.design-shot--feature {
  padding: clamp(14px, 2vw, 24px) clamp(14px, 2vw, 24px) 0;
  border-color: #dce2e7;
  border-radius: 18px;
}

.design-shot--feature img {
  border: 1px solid #e4e8ec;
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(37, 55, 70, 0.08);
}

.design-shot--feature figcaption {
  border-top: 0;
}

.more-work {
  margin-top: clamp(72px, 9vw, 116px);
  border-top: 1px solid #d8dee4;
}

.more-work summary {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 500;
  cursor: pointer;
}

.more-work summary::marker {
  color: var(--blue);
}

.more-work summary span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 400;
}

.design-gallery--more {
  padding-bottom: 8px;
}

.tab-panel--hifi {
  display: block;
  width: 100%;
  min-height: 0;
  padding: clamp(24px, 4vw, 54px);
  background: var(--soft);
}

.hifi-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 1.5vw, 20px);
  padding: clamp(34px, 4.4vw, 60px);
  border: 1px solid #e3e8ec;
  border-radius: 14px;
  background: var(--surface);
}

.hifi-shot {
  overflow: hidden;
  margin: 0;
  background: #fff;
}

.hifi-shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #fff;
  transition: opacity 180ms ease;
}

.hifi-shot:hover img {
  opacity: 0.82;
}

.hifi-shot figcaption {
  display: none;
}

.tab-panel--architecture {
  display: block;
  height: 696px;
  min-height: 696px;
  padding: 0;
  background: var(--soft);
}

.ia-map {
  position: relative;
  width: 100%;
  height: 100%;
  padding-top: 40px;
}

.ia-root {
  position: relative;
  display: grid;
  width: 182px;
  height: 76px;
  place-items: center;
  margin: 0 auto;
  border-radius: 6px;
  color: var(--ink);
  background: #4d9cf0;
  font-size: 17px;
  font-weight: 400;
}

.ia-root span {
  display: grid;
  min-width: 158px;
  height: 32px;
  place-items: center;
  padding: 0 10px;
  border-radius: 4px;
  background: var(--surface);
}

.ia-root::after {
  position: absolute;
  top: 76px;
  left: 50%;
  width: 1px;
  height: 46px;
  content: "";
  background: #708092;
  transform: translateX(-50%);
}

.ia-groups {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 42px;
  width: calc(100% - 114px);
  margin: 77px auto 0;
}

.ia-groups::before {
  position: absolute;
  top: -32px;
  right: calc((100% - 126px) / 8);
  left: calc((100% - 126px) / 8);
  height: 1px;
  content: "";
  background: #708092;
}

.ia-groups article {
  position: relative;
}

.ia-groups article::before {
  position: absolute;
  top: -32px;
  left: 50%;
  width: 1px;
  height: 32px;
  content: "";
  background: #708092;
}

.ia-groups h3 {
  display: block;
  height: 69px;
  margin: 0;
  padding: 26px 12px 12px;
  border: 0;
  border-radius: 5px;
  color: var(--ink);
  background: #636977;
  font-size: 17px;
  font-weight: 400;
  text-align: center;
}

.ia-groups h3 span {
  display: grid;
  height: 31px;
  place-items: center;
  border-radius: 4px;
  background: var(--surface);
}

.ia-groups ul {
  display: grid;
  gap: 12px;
  width: 192px;
  margin: 18px auto 0;
  padding: 0;
  list-style: none;
}

.ia-groups li {
  display: grid;
  height: 36px;
  place-items: center;
  padding: 0 8px;
  border: 1px solid #25384b;
  border-radius: 4px;
  color: var(--body);
  background: var(--surface);
  font-size: 16px;
  line-height: 1.2;
  text-align: center;
}

.ia-groups article:nth-child(3) ul {
  width: 214px;
}

.image-lightbox {
  width: min(96vw, 1600px);
  max-width: none;
  height: min(94vh, 1100px);
  max-height: none;
  padding: 0;
  border: 0;
  overflow: hidden;
  border-radius: 16px;
  background: #111820;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.38);
}

.image-lightbox::backdrop {
  background: rgba(13, 20, 27, 0.78);
  backdrop-filter: blur(10px);
}

.image-lightbox figure {
  display: grid;
  height: 100%;
  margin: 0;
  grid-template-rows: minmax(0, 1fr) auto;
}

.lightbox-stage {
  display: grid;
  min-width: 0;
  min-height: 0;
  overflow: auto;
  place-items: start center;
}

.image-lightbox img {
  width: auto;
  max-width: none;
  height: auto;
  max-height: none;
}

.image-lightbox figcaption {
  display: none;
}

.image-lightbox figcaption small {
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
}

.lightbox-close {
  position: absolute;
  z-index: 3;
  top: 14px;
  right: 14px;
  display: grid;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
  place-items: center;
  color: #fff;
  background: rgba(17, 24, 32, 0.72);
  font-size: 27px;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(8px);
}

.lightbox-close:focus-visible {
  outline: 3px solid rgba(52, 143, 255, 0.56);
  outline-offset: 3px;
}

body.lightbox-open {
  overflow: hidden;
}

.outcome-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
}

.outcome-grid article {
  min-height: 250px;
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.outcome-grid article:first-child {
  background: #eaf4ff;
  border-color: #cfe5ff;
}

.outcome-number {
  min-height: 60px;
  font-size: clamp(30px, 3.2vw, 44px);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.outcome-grid h3 {
  margin: 24px 0 10px;
  font-size: 18px;
  font-weight: 500;
}

.outcome-grid p {
  margin-bottom: 0;
  color: var(--body);
  font-size: 15px;
  line-height: 1.85;
}

.retrospective {
  margin-top: 108px;
}

.retrospective > h2 {
  margin-bottom: 40px;
  text-align: center;
  font-size: 36px;
  font-weight: 400;
  line-height: 44px;
  letter-spacing: 0;
}

.retrospective article {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(42px, 8vw, 112px);
  align-items: start;
  padding: 54px 0;
  border-top: 1px solid var(--line);
}

.retrospective h3 {
  margin: 0;
  color: var(--ink);
  font-size: 32px;
  font-weight: 400;
  line-height: 40px;
}

.retrospective p {
  max-width: 62ch;
  margin-bottom: 0;
  color: var(--body);
  font-size: 16px;
  line-height: 24px;
}

.case-footer {
  padding: 48px 24px 64px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.case-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--body);
  font-size: 14px;
}

.case-footer a {
  color: #3157d5;
  font-weight: 600;
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1040px) {
  .nav-links {
    position: fixed;
    top: 84px;
    right: 24px;
    display: none;
    width: 220px;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(250, 251, 252, 0.98);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 12px 14px;
  }

  .mobile-toggle {
    display: grid;
  }

  .flow-steps {
    grid-template-columns: repeat(5, 210px);
    overflow-x: auto;
    padding-bottom: 10px;
  }

  .feature-media--pair,
  .design-feature:nth-child(2) .feature-media--pair {
    grid-template-columns: 1fr;
  }

  .tab-panel--hifi {
    width: 100%;
    padding: 32px;
  }

  .hifi-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 36px;
  }

  .tab-panel--architecture {
    height: auto;
    min-height: 0;
    padding: 40px;
  }

  .ia-map {
    height: auto;
    padding-top: 0;
  }

  .ia-root::after {
    display: none;
  }

  .ia-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    width: 100%;
    margin-top: 40px;
  }

  .ia-groups::before,
  .ia-groups article::before {
    display: none;
  }
}

@media (max-width: 760px) {
  html {
    scroll-padding-top: 82px;
  }

  .nav {
    width: calc(100% - 32px);
    height: 72px;
  }

  .nav-links {
    top: 72px;
    right: 16px;
  }

  .section {
    padding: 76px 20px;
  }

  .hero {
    padding-top: 106px;
  }

  .hero-copy {
    padding: 50px 0 38px;
    text-align: center;
  }

  h1 {
    font-size: 40px;
    line-height: 48px;
    letter-spacing: 0;
  }

  .lead {
    font-size: 20px;
    line-height: 28px;
  }

  .feature-frame {
    border-radius: 12px;
  }

  .intro-grid,
  .retrospective article {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .intro-grid {
    padding: 40px 0;
  }

  .chapter-head {
    margin-bottom: 36px;
  }

  .chapter-head h2 {
    font-size: 32px;
    line-height: 40px;
  }

  .intro-grid h2,
  .retrospective > h2 {
    font-size: 32px;
    line-height: 40px;
  }

  .discovery-copy h3,
  .strategy-cards h3,
  .retrospective h3 {
    font-size: 28px;
    line-height: 36px;
  }

  .tab-list {
    justify-content: flex-start;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 1px 9px;
  }

  .case-tab {
    flex: 0 0 auto;
    min-height: 40px;
    padding: 9px 14px;
    font-size: 14px;
  }

  .tab-panel {
    grid-template-columns: 1fr;
  }

  .discovery-copy {
    padding: 30px 26px;
  }

  .panel-visual {
    padding: 14px;
  }

  .strategy-cards,
  .outcome-grid {
    grid-template-columns: 1fr;
  }

  .strategy-cards article,
  .outcome-grid article {
    min-height: 0;
    padding: 28px;
  }

  .strategy-cards h3 {
    margin-top: 28px;
  }

  .roadmap {
    padding: 28px;
  }

  .roadmap-track {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 0 0 0 28px;
  }

  .roadmap-track::before {
    top: 7px;
    right: auto;
    bottom: 7px;
    left: 5px;
    width: 1px;
    height: auto;
  }

  .roadmap-track article {
    padding: 0;
  }

  .roadmap-dot {
    top: 7px;
    left: -23px;
  }

  .roadmap-track h4 {
    margin-bottom: 10px;
  }

  .roadmap-track p {
    max-width: none;
    margin: 0;
  }

  .roadmap-track h4,
  .roadmap-track p {
    text-align: left;
  }

  .flow-map-text {
    padding: 26px;
  }

  .flow-steps {
    margin-right: -26px;
  }

  .process-video {
    border-radius: 12px;
  }

  .tab-panel--architecture {
    padding: 28px 20px;
  }

  .ia-root {
    border-width: 2px;
    font-size: 15px;
  }

  .ia-groups {
    grid-template-columns: 1fr;
    gap: 20px;
    width: 100%;
    margin-top: 28px;
  }

  .ia-groups h3 {
    border-width: 1px;
  }

  .image-lightbox {
    width: 100vw;
    height: 100dvh;
    border-radius: 0;
  }

  .tab-panel--gallery {
    padding: 12px;
  }

  .design-gallery {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .design-gallery--rail {
    grid-template-columns: none;
    grid-auto-columns: 86%;
    gap: 14px;
    padding: 2px 2px 14px;
  }

  .gallery-intro {
    padding: 16px 14px 0;
  }

  .design-features {
    gap: 68px;
    padding: 16px 2px;
  }

  .design-feature {
    padding-top: 26px;
  }

  .design-feature header {
    padding: 0 12px;
  }

  .design-shot--feature {
    border-radius: 14px;
  }

  .more-work {
    margin: 68px 12px 0;
  }

  .design-gallery--more {
    padding-bottom: 14px;
  }

  .design-shot figcaption {
    padding: 10px 12px;
    font-size: 12px;
  }

  .tab-panel--hifi {
    width: 100%;
    padding: 12px;
    border-radius: 18px;
  }

  .hifi-board {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 22px;
    border-radius: 12px;
  }

  .retrospective {
    margin-top: 78px;
  }

  .retrospective article {
    padding: 38px 0;
  }

  .case-footer .container {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

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