/* City-first landing; system fonts and same-origin assets. */

:root {
  color-scheme: dark;
  --bg: #0a1111;
  --surface: #101a19;
  --line: #243532;
  --ink: #edf5ef;
  --muted: #a1b5ac;
  --mint: #bcf4cd;
  --amber: #edc47c;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}

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

button,input,select {
  font: inherit;
}

button,a,select {
  -webkit-tap-highlight-color: transparent;
}

button,select {
  color: var(--ink);
  background: #15201e;
  border: 1px solid #3a5048;
  border-radius: 7px;
  min-height: 44px;
  padding: 8px 14px;
}

button {
  cursor: pointer;
}

button:disabled,select:disabled {
  opacity: .45;
  cursor: default;
}

a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 5px;
}

button:hover:enabled {
  background: #22362c;
}

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

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

ul,ol {
  padding: 0;
  list-style: none;
}

.shell {
  width: min(1240px,calc(100% - 80px));
  margin-inline: auto;
}

.section {
  padding-block: 108px;
  scroll-margin-top: 20px;
}

.eyebrow,.mono,.card-index,.map-number,.boundary-label {
  font-family: ui-monospace,SFMono-Regular,Consolas,monospace;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mint);
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-dot {
  display: inline-block;
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 10px #bcf4cd25;
}

.status-dot.amber {
  background: var(--amber);
}

h1,h2,h3 {
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.045em;
}

h1 {
  font-size: clamp(44px,5.1vw,76px);
}

h2 {
  font-size: clamp(36px,4vw,54px);
}

h3 {
  font-size: 23px;
  letter-spacing: -.025em;
  line-height: 1.3;
}

em {
  font-weight: 400;
  font-family: Georgia,"Times New Roman",serif;
  font-style: italic;
  color: var(--mint);
}

p {
  color: var(--muted);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  min-height: 48px;
  border: 1px solid #3a5048;
  border-radius: 7px;
  padding: 10px 20px;
  font-weight: 550;
  font-size: 14px;
  transition: background .2s,transform .2s;
}

.button:hover {
  background: #1a3027;
  transform: translateY(-1px);
}

.button.primary {
  background: var(--mint);
  color: #10291d;
  border-color: var(--mint);
}

.button.primary:hover {
  background: #d4f9df;
}

.button.small {
  font-size: 13px;
  min-height: 44px;
  padding: 7px 15px;
}

.text-link {
  font-size: 14px;
  display: inline-block;
  padding-block: 12px;
  color: var(--ink);
}

.text-link:hover {
  color: var(--mint);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  left: 12px;
  top: -100px;
  z-index: 100;
  background: var(--mint);
  color: #10291d;
  padding: 12px;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #0a1111f2;
  backdrop-filter: blur(16px);
  border-bottom: 1px solid #23322a80;
}

.nav {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  font-size: 17px;
  line-height: 1.2;
  flex-shrink: 0;
}

.brand img {
  border-radius: 7px;
}

.brand small {
  font-size: 10px;
  font-weight: 400;
  display: block;
  color: var(--muted);
  letter-spacing: .025em;
  margin-top: 4px;
}

.nav nav {
  display: flex;
  gap: 30px;
  margin-left: auto;
}

.nav nav a,.language {
  font-size: 13px;
  color: var(--muted);
  padding-block: 12px;
}

.nav nav a:hover,.language:hover {
  color: var(--ink);
}

.nav-end {
  display: flex;
  align-items: center;
  gap: 22px;
}

.hero {
  padding-top: 72px;
}

.hero-copy {
  text-align: center;
  margin: auto;
  max-width: 820px;
}

.hero .eyebrow {
  justify-content: center;
}

.hero h1 {
  margin-top: 24px;
}

.hero .lede {
  max-width: 630px;
  font-size: 17px;
  line-height: 1.75;
  margin: 25px auto 0;
}

.actions {
  display: flex;
  gap: 26px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 28px;
}

.assurances {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 22px;
  font-size: 12px;
  color: var(--muted);
}

.assurances li::before {
  content: "✓";
  color: var(--mint);
  margin-right: 7px;
}

.hero-world {
  margin-top: 48px;
  overflow: hidden;
  border: 1px solid #41574a;
  border-radius: 12px;
  background: #12201b;
  box-shadow: 0 30px 100px #0005;
}

.world-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid #324638;
  background: #15231e;
  color: #c1d1c7;
  font: 11px ui-monospace,SFMono-Regular,monospace;
  letter-spacing: .06em;
}

.world-top .status-dot {
  width: 5px;
  height: 5px;
  margin-right: 9px;
}

.world-image {
  position: relative;
  overflow: hidden;
  height: 395px;
  background: #1c2f29;
}

.world-image img {
  width: 118%;
  max-width: none;
  height: auto;
  position: absolute;
  left: -18%;
  top: -10%;
  filter: saturate(.8) brightness(.78);
}

.world-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,#0c191d00 55%,#0d1c1b90);
}

.world-coordinate {
  position: absolute;
  left: 28px;
  bottom: 25px;
  z-index: 1;
  font: 10px/1.8 ui-monospace,SFMono-Regular,monospace;
  letter-spacing: .12em;
  color: #e4f4e9;
}

.hero-world figcaption {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 14px 20px;
  font-size: 12px;
  color: var(--muted);
}

.hero-world .mono {
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--mint);
}

.source-strip {
  text-align: center;
  padding: 40px 0 0;
}

.source-strip>span {
  font-size: 12px;
  color: var(--muted);
}

.source-strip>div {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 17px;
  font-size: 16px;
  color: #cfddd3;
}

.source-strip small {
  font-size: 11px;
  display: block;
  margin-top: 14px;
  color: var(--muted);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
  margin-bottom: 38px;
}

.section-heading h2 {
  margin-top: 18px;
}

.section-heading>p {
  max-width: 345px;
  font-size: 15px;
  line-height: 1.8;
  padding-bottom: 4px;
}

.city-window {
  border: 1px solid #3b5045;
  border-radius: 12px;
  overflow: hidden;
  background: #101c1b;
}

.city-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  align-items: center;
}

.window-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  flex-wrap: wrap;
}

.sample-badge {
  font-size: 11px;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 12px;
}

.city-actions {
  display: flex;
  gap: 7px;
}

.city-actions button,.city-actions select {
  font-size: 12px;
  padding: 6px 12px;
}

.city-stage {
  height: 600px;
  position: relative;
  overflow: hidden;
  background: #0b1518;
}

.city-poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(.5) saturate(.65);
}

.city-launch {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  padding: 30px;
  background: #08161165;
  z-index: 2;
}

.launch-symbol {
  border: 1px solid #b5e8c45e;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 30px;
  color: var(--mint);
  margin-bottom: 20px;
}

.city-launch h3 {
  font-size: 30px;
}

.city-launch p {
  color: #e1e9e4;
  max-width: 400px;
  font-size: 14px;
  margin: 14px 0 24px;
}

.city-launch .text-link {
  font-size: 12px;
  margin-top: 8px;
}

.city-stage iframe {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  border: 0;
  visibility: hidden;
}

.city-window[data-city-state="ready"] iframe {
  visibility: visible;
}

.city-window[data-city-state="ready"] .city-launch,.city-window[data-city-state="ready"] .city-poster {
  display: none;
}

.city-window[data-city-state="loading"] .launch-symbol {
  animation: loading-pulse 1.5s ease-in-out infinite;
}

.city-foot {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 14px 18px;
  color: var(--muted);
  font-size: 11px;
}

.notice {
  border: 1px solid var(--line);
  padding: 15px;
}

.footnote {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  margin-top: 24px;
}

.mapping {
  border-top: 1px solid var(--line);
}

.mapping-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: center;
}

.building-view {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #111d19;
}

.building-view img {
  width: 100%;
  aspect-ratio: 1.35;
  object-fit: cover;
  object-position: right;
}

.building-view figcaption {
  font-size: 11px;
  color: var(--muted);
  padding: 12px 17px;
}

.mapping-list li {
  display: flex;
  gap: 22px;
  padding: 23px 0;
  border-bottom: 1px solid var(--line);
}

.mapping-list li:first-child {
  padding-top: 0;
}

.mapping-list li:last-child {
  border-bottom: 0;
}

.map-number {
  font-size: 12px;
  color: var(--mint);
  padding-top: 5px;
}

.mapping-list h3 {
  font-size: 21px;
}

.mapping-list p {
  font-size: 14px;
  margin-top: 11px;
  line-height: 1.8;
}

.insights-section {
  background: #111a17;
  border-block: 1px solid var(--line);
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 20px;
}

.insight-card {
  border: 1px solid #32463a;
  border-radius: 10px;
  padding: 27px;
  min-width: 0;
  background: #121f19;
  display: flex;
  flex-direction: column;
}

.card-index {
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--mint);
}

.insight-card h3 {
  margin-top: 22px;
  font-size: 23px;
  max-width: 240px;
}

.insight-card>p {
  font-size: 14px;
  margin-top: 14px;
  line-height: 1.8;
  min-height: 100px;
}

.mini-chart {
  height: 110px;
  border-bottom: 1px solid #486747;
  display: flex;
  align-items: flex-end;
  gap: 7px;
  padding: 15px 0 0;
  margin-top: 12px;
}

.mini-chart i {
  flex: 1;
  height: var(--bar);
  background: #87b894;
  border-radius: 3px 3px 0 0;
}

.mini-chart i:nth-child(3n) {
  background: #395c48;
}

.illustration-note {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  display: block;
  margin-top: 16px;
}

.cost-example {
  margin: 14px 0 0;
  font-size: 12px;
}

.cost-example>div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.cost-example dt {
  color: var(--muted);
}

.cost-example dd {
  margin: 0;
  color: #e8f0e9;
  white-space: nowrap;
}

.mini-trace {
  margin-top: 13px;
  display: flex;
  flex-direction: column;
  font: 12px ui-monospace,SFMono-Regular,monospace;
}

.mini-trace span {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.mini-trace b {
  font-weight: 400;
  color: var(--amber);
}

.privacy-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: center;
}

.privacy-copy h2 {
  margin-top: 20px;
  font-size: clamp(40px,4.3vw,60px);
}

.privacy-copy>p:not(.eyebrow) {
  font-size: 15px;
  max-width: 410px;
  margin-top: 26px;
  line-height: 1.85;
}

.license {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 30px;
  font-size: 12px;
  color: var(--muted);
}

.license-mark {
  border: 1px solid #526557;
  border-radius: 5px;
  padding: 10px;
  font-size: 12px;
  color: var(--mint);
  font-family: ui-monospace,SFMono-Regular,monospace;
}

.privacy-diagram {
  border: 1px solid #3a5242;
  border-radius: 14px;
  padding: 28px;
  background: radial-gradient(ellipse at top,#23432c40,transparent 70%);
}

.boundary-label {
  font-size: 11px;
  letter-spacing: .08em;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--mint);
}

.boundary-label>span:last-child {
  margin-left: auto;
  font-size: 22px;
}

.privacy-diagram ol {
  padding: 24px 0;
}

.privacy-diagram li {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 25px 0;
  position: relative;
}

.privacy-diagram li:not(:last-child)::after {
  content: "↓";
  position: absolute;
  bottom: -10px;
  left: 20px;
  color: #6c8b75;
  font-size: 17px;
}

.flow-icon {
  width: 48px;
  height: 48px;
  flex: none;
  border: 1px solid #3c5a43;
  display: grid;
  place-items: center;
  border-radius: 10px;
  font-size: 24px;
  background: #172a1d;
  color: var(--mint);
}

.privacy-diagram strong {
  font-size: 16px;
  font-weight: 500;
}

.privacy-diagram small {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 5px;
}

.privacy-diagram>p {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  font-size: 11px;
  line-height: 1.8;
}

.faq-section {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
}

.faq-section h2 {
  margin-top: 20px;
}

.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 19px 0;
}

.faq-list details:first-child {
  padding-top: 0;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  position: relative;
  padding: 7px 32px 7px 0;
  font-size: 15px;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 0;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  font-size: 14px;
  line-height: 1.9;
  margin-top: 14px;
  margin-bottom: 10px;
}

.download-section {
  border-block: 1px solid #29452f;
  background: radial-gradient(ellipse at top,#27492a50,transparent 70%),#101b14;
  text-align: center;
}

.download-inner {
  max-width: 900px;
}

.download-inner .eyebrow {
  justify-content: center;
}

.download-inner h2 {
  font-size: clamp(39px,5vw,66px);
  margin-top: 25px;
}

.download-inner>p:not(.eyebrow) {
  max-width: 540px;
  margin: 22px auto;
  font-size: 15px;
}

.install-steps {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 32px 0;
  font-size: 12px;
  color: #c9d9cc;
}

.install-steps li {
  display: flex;
  gap: 10px;
}

.install-steps li>span:first-child {
  color: var(--mint);
  font-family: ui-monospace,SFMono-Regular,monospace;
}

.release-status {
  border: 1px solid #536048;
  border-radius: 8px;
  background: #1c2519;
  padding: 20px;
  max-width: 560px;
  margin: 0 auto 26px;
}

.release-status strong {
  font-size: 14px;
  font-weight: 500;
  margin-left: 8px;
}

.release-status p {
  font-size: 12px;
  margin-top: 10px;
  line-height: 1.8;
}

.download-inner>p.footnote {
  font-size: 11px;
  max-width: 540px;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  padding-block: 34px;
}

.footer>p,.footer>span {
  font-size: 11px;
  color: var(--muted);
}

html[data-av-lang="zh"] em {
  font-family: inherit;
  font-style: normal;
  letter-spacing: -.035em;
}

html[data-av-lang="zh"] .hero h1 {
  line-height: 1.22;
  font-size: clamp(40px,4.6vw,66px);
}

html[data-av-lang="zh"] .hero .lede {
  max-width: 560px;
}

html[data-av-lang="zh"] h2 {
  line-height: 1.25;
  letter-spacing: -.025em;
}

.hero {
  padding-top: 48px;
}

.hero .lede {
  margin-top: 20px;
}

.hero-world {
  margin-top: 36px;
}

.world-image img {
  top: -64%;
}

.city-actions {
  flex-wrap: wrap;
}

.world-coordinate {
  display: none;
}

@keyframes loading-pulse {
  50% {
    opacity: .4;
    transform: scale(.95);
  }
}

@media(min-width:1600px) {
  .world-image {
    height: 440px;
  }
}

@media(max-width:1000px) {
  .shell {
    width: calc(100% - 48px);
  }
  .nav nav {
    gap: 18px;
  }
  .nav {
    gap: 20px;
  }
  .world-image {
    height: 340px;
  }
  .world-image img {
    top: -2%;
  }
  .section {
    padding-block: 80px;
  }
  .mapping-grid {
    gap: 35px;
  }
  .privacy-section {
    gap: 50px;
  }
  .insight-card {
    padding: 22px;
  }
  .insight-card h3 {
    font-size: 21px;
  }
  .city-toolbar {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
  }
  .city-stage {
    height: 540px;
  }
  .faq-section {
    gap: 40px;
  }
}

@media(max-width:700px) {
  html {
    scroll-padding-top: 85px;
  }
  .shell {
    width: calc(100% - 36px);
  }
  .nav {
    height: 68px;
    gap: 14px;
  }
  .nav nav {
    display: none;
  }
  .brand {
    font-size: 15px;
  }
  .nav-end {
    gap: 14px;
  }
  .button.small {
    font-size: 11px;
    padding-inline: 10px;
  }
  .language {
    font-size: 12px;
    min-width: 30px;
    text-align: center;
  }
  .hero {
    padding-top: 48px;
  }
  .hero .eyebrow {
    font-size: 9px;
    letter-spacing: .09em;
  }
  h1 {
    font-size: clamp(38px,8.7vw,58px);
  }
  .hero .lede {
    font-size: 15px;
    line-height: 1.8;
    margin-top: 20px;
  }
  .hero h1 {
    margin-top: 20px;
  }
  .actions {
    gap: 10px 20px;
    margin-top: 25px;
  }
  .assurances {
    gap: 7px 13px;
    font-size: 10px;
    margin-top: 18px;
  }
  .hero-world {
    margin-top: 35px;
    border-radius: 9px;
  }
  .world-top {
    padding: 10px 12px;
    font-size: 9px;
    letter-spacing: 0;
  }
  .world-top>span:last-child {
    max-width: 145px;
    text-align: right;
  }
  .world-image {
    height: 260px;
  }
  .world-image img {
    height: 100%;
    width: 150%;
    left: -40%;
    top: 0;
    object-fit: cover;
  }
  .world-coordinate {
    font-size: 8px;
    bottom: 18px;
    left: 16px;
  }
  .hero-world figcaption {
    padding: 10px 12px;
    font-size: 10px;
  }
  .hero-world figcaption>span:first-child {
    max-width: 220px;
  }
  .hero-world .mono {
    font-size: 8px;
    white-space: nowrap;
  }
  .source-strip {
    padding-top: 28px;
  }
  .source-strip>span {
    font-size: 11px;
  }
  .source-strip>div {
    font-size: 13px;
    gap: 10px 20px;
  }
  .source-strip small {
    font-size: 10px;
    max-width: 290px;
    margin-inline: auto;
  }
  .section {
    padding-block: 60px;
  }
  .section-heading {
    display: block;
    margin-bottom: 28px;
  }
  .section-heading>p {
    margin-top: 22px;
    max-width: 100%;
    font-size: 14px;
  }
  .section-heading h2 {
    margin-top: 15px;
  }
  .eyebrow {
    font-size: 10px;
  }
  .city-toolbar {
    padding: 12px;
  }
  .window-title {
    font-size: 12px;
    gap: 7px;
  }
  .sample-badge {
    font-size: 10px;
    padding-left: 8px;
  }
  .city-actions {
    width: 100%;
    justify-content: space-between;
  }
  .city-actions button,.city-actions select {
    font-size: 11px;
    padding-inline: 10px;
  }
  .city-stage {
    height: 540px;
  }
  .city-launch {
    padding: 22px;
  }
  .city-launch h3 {
    font-size: 26px;
  }
  .city-foot {
    padding: 12px;
    flex-direction: column;
    gap: 5px;
    font-size: 10px;
  }
  .mapping-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .building-view img {
    aspect-ratio: 1.2;
  }
  .mapping-list h3 {
    font-size: 20px;
  }
  .mapping-list li {
    padding: 23px 0;
  }
  .mapping-list p {
    font-size: 14px;
  }
  .insight-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .insight-card {
    padding: 25px;
  }
  .insight-card>p {
    min-height: 0;
    margin-bottom: 15px;
  }
  .insight-card h3 {
    max-width: none;
    margin-top: 18px;
  }
  .mini-chart {
    height: 100px;
  }
  .privacy-section {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .privacy-copy h2 {
    font-size: 46px;
  }
  .privacy-copy>p:not(.eyebrow) {
    max-width: none;
  }
  .privacy-diagram {
    padding: 23px;
  }
  .faq-section {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .faq-section h2 {
    font-size: 36px;
  }
  .faq-list summary {
    font-size: 14px;
  }
  .install-steps {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .download-inner h2 {
    font-size: 40px;
  }
  .download-inner>p:not(.eyebrow) {
    font-size: 14px;
  }
  .download-inner>.button {
    max-width: 100%;
    font-size: 12px;
  }
  .footer {
    flex-wrap: wrap;
    gap: 20px;
    padding-block: 25px;
  }
  .footer>p {
    order: 3;
    width: 100%;
    font-size: 10px;
  }
  .footer>span {
    font-size: 10px;
  }
  html[data-av-lang="zh"] .hero h1 {
    font-size: clamp(34px,8.5vw,48px);
  }
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto;
  }
  *,*::before,*::after {
    animation: none!important;
    transition: none!important;
  }
}

.footnote,.illustration-note,.source-strip small,.city-foot,.building-view figcaption,.privacy-diagram>p,.release-status p,.download-inner>p.footnote {
  font-size: 14px;
}

/* Oh Agent: the production City frontend is the primary hero visual. */
.hero {
  display: grid;
  grid-template-columns: minmax(300px, .82fr) minmax(0, 1.18fr);
  gap: 30px 40px;
  align-items: center;
  padding-top: 36px;
}
.hero-copy {
  text-align: left;
  max-width: none;
}
.hero .eyebrow,.hero .actions,.hero .assurances {
  justify-content: flex-start;
}
.hero .eyebrow {
  font-size: 10px;
  letter-spacing: .09em;
}
.hero h1 {
  font-size: clamp(40px, 4.2vw, 62px);
  line-height: 1.12;
}
.hero .lede {
  margin-inline: 0;
  max-width: 470px;
  font-size: 16px;
}
.hero .actions {
  gap: 10px 22px;
}
.hero .assurances {
  gap: 8px 16px;
}
.hero-city {
  min-width: 0;
  scroll-margin-top: 110px;
}
.city-intro {
  margin-bottom: 14px;
}
.city-intro h2 {
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -.01em;
}
.city-intro p {
  font-size: 13px;
  margin-top: 3px;
}
.hero .city-stage {
  height: 490px;
}
.hero .city-toolbar {
  padding: 10px 12px;
  gap: 10px;
  flex-wrap: wrap;
}
.hero .city-actions {
  gap: 5px;
}
.hero .city-actions button,.hero .city-actions select {
  font-size: 11px;
  padding-inline: 9px;
}
.hero .city-foot {
  flex-direction: column;
  gap: 5px;
  font-size: 12px;
}
.hero .source-strip {
  grid-column: 1 / -1;
  padding-top: 18px;
}
.brand {
  letter-spacing: -.025em;
  font-size: 20px;
  font-weight: 600;
}
.brand small {
  letter-spacing: .015em;
}
html[data-av-lang="zh"] .hero h1 {
  font-size: clamp(36px, 3.8vw, 54px);
}
@media(max-width:1000px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }
  .hero-copy {
    text-align: center;
    max-width: 740px;
  }
  .hero .eyebrow,.hero .actions,.hero .assurances {
    justify-content: center;
  }
  .hero .lede {
    margin-inline: auto;
    max-width: 600px;
  }
  .hero-city {
    width: 100%;
  }
  .hero .city-stage {
    height: 510px;
  }
}
@media(max-width:700px) {
  .brand {
    font-size: 17px;
  }
  .hero {
    padding-top: 35px;
  }
  .hero h1 {
    font-size: 38px;
  }
  html[data-av-lang="zh"] .hero h1 {
    font-size: 34px;
  }
  .hero .lede {
    font-size: 15px;
  }
  .hero .eyebrow {
    font-size: 9px;
    letter-spacing: .04em;
  }
  .hero .city-stage {
    height: 480px;
  }
  .hero .city-actions {
    gap: 4px;
  }
  .hero .city-actions button,.hero .city-actions select {
    padding-inline: 7px;
  }
  .hero .source-strip {
    padding-top: 0;
  }
}

@media(max-width:700px) {
  html[data-av-lang="zh"] .section-heading h2 {
    font-size: 30px;
    line-height: 1.4;
  }
  .source-strip small {
    max-width: 100%;
  }
  .footnote,.illustration-note,.city-foot,.building-view figcaption,.privacy-diagram>p,.release-status p,.download-inner>p.footnote {
    font-size: 14px;
  }
}