:root {
  color-scheme: dark;
  --bg: #07090d;
  --bg-soft: #0b0f16;
  --panel: #111722;
  --panel-2: #151d2b;
  --line: rgba(155, 169, 194, 0.2);
  --line-strong: rgba(255, 195, 67, 0.38);
  --text: #eef3fb;
  --muted: #9aa7bb;
  --faint: #677286;
  --yellow: #ffc247;
  --yellow-2: #ffdd7c;
  --green: #31d07c;
  --blue: #56a0ff;
  --red: #ff5876;
  --purple: #9a6cff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.48);
  --max: 1180px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  letter-spacing: 0;
}

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 24px;
  height: 72px;
  padding: 0 clamp(20px, 4vw, 54px);
  border-bottom: 1px solid rgba(155, 169, 194, 0.16);
  background: rgba(7, 9, 13, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  color: #f7fbff;
  font-size: 22px;
  font-weight: 750;
  letter-spacing: 0;
}

.brand-logo {
  display: block;
  width: 54px;
  height: auto;
  max-height: 35px;
  flex: 0 0 auto;
}

.brand-name {
  display: grid;
  gap: 1px;
  align-items: center;
  transform: translateY(1px);
  line-height: 1;
}

.brand-name-cn {
  color: #f7fbff;
  font-size: 24px;
  font-weight: 950;
  line-height: 0.98;
}

.brand-name-en {
  color: #c2cada;
  font-size: 14px;
  font-weight: 780;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 640;
}

.nav-links a {
  transition: color 180ms ease;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 720;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.nav-cta {
  padding: 0 18px;
  color: #111722;
  background: var(--yellow);
  border-color: rgba(255, 194, 71, 0.72);
}

.nav-cta:hover,
.button:hover {
  transform: translateY(-1px);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 23, 34, 0.76);
  color: var(--text);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: clamp(690px, 86svh, 840px);
  overflow: hidden;
  padding: 136px clamp(20px, 5vw, 72px) 72px;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(90deg, rgba(7, 9, 13, 0.98) 0%, rgba(7, 9, 13, 0.94) 45%, rgba(7, 9, 13, 0.32) 100%),
    radial-gradient(circle at 72% 18%, rgba(255, 194, 71, 0.16), transparent 30%),
    linear-gradient(180deg, #0a0d13 0%, #07090d 100%);
  content: "";
}

.hero::after {
  position: absolute;
  inset: auto 0 0;
  z-index: -1;
  height: 180px;
  background: linear-gradient(180deg, transparent 0%, var(--bg) 88%);
  content: "";
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 112px clamp(20px, 5vw, 72px) 64px 46vw;
  opacity: 0.9;
}

.workspace-scene {
  position: relative;
  width: min(820px, 56vw);
  height: min(600px, 56vw);
  min-height: 490px;
  border: 1px solid rgba(155, 169, 194, 0.22);
  border-radius: 18px;
  background: #080c12;
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-7deg) rotateX(2deg);
  transform-origin: center right;
}

.scene-topbar {
  position: absolute;
  inset: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 54px;
  padding: 0 18px;
  border-bottom: 1px solid rgba(155, 169, 194, 0.16);
  background: #111722;
}

.status-pill,
.tool-tab {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid rgba(155, 169, 194, 0.16);
  border-radius: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.status-pill.strong,
.tool-tab.active {
  color: #151008;
  background: var(--yellow);
  border-color: transparent;
}

.scene-sidebar {
  position: absolute;
  top: 54px;
  bottom: 0;
  width: 204px;
  padding: 18px 14px;
  background: #111722;
  border-color: rgba(155, 169, 194, 0.16);
}

.scene-sidebar.left {
  left: 0;
  border-right: 1px solid rgba(155, 169, 194, 0.16);
}

.scene-sidebar.right {
  right: 0;
  border-left: 1px solid rgba(155, 169, 194, 0.16);
}

.side-title {
  margin-bottom: 14px;
  color: var(--faint);
  font-size: 12px;
  font-weight: 760;
}

.side-title.row,
.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.asset {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 58px;
  margin-bottom: 8px;
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
}

.asset.active {
  background: rgba(255, 194, 71, 0.14);
  border-color: rgba(255, 194, 71, 0.38);
  color: var(--text);
}

.asset b,
.asset small {
  display: block;
}

.asset b {
  font-size: 13px;
}

.asset small {
  margin-top: 2px;
  color: var(--faint);
  font-size: 11px;
}

.thumb,
.tile {
  display: block;
  overflow: hidden;
  border-radius: 7px;
  border: 1px solid rgba(155, 169, 194, 0.16);
}

.thumb {
  width: 48px;
  height: 38px;
}

.construction {
  background:
    linear-gradient(155deg, transparent 48%, rgba(255, 194, 71, 0.85) 49% 54%, transparent 55%),
    linear-gradient(180deg, #244c77 0 48%, #b6965b 49% 100%);
}

.street {
  background:
    linear-gradient(135deg, transparent 0 42%, #2d3444 43% 55%, transparent 56%),
    linear-gradient(180deg, #66a1c8 0 48%, #455262 49% 100%);
}

.medical {
  background:
    radial-gradient(circle at 54% 46%, rgba(86, 160, 255, 0.42), transparent 36%),
    #121b2b;
}

.annotation-canvas {
  position: absolute;
  left: 204px;
  right: 204px;
  top: 54px;
  bottom: 0;
  overflow: hidden;
  background: #0b1119;
}

.canvas-sky,
.canvas-ground {
  position: absolute;
  inset: 0;
}

.canvas-sky {
  background:
    radial-gradient(circle at 52% 16%, rgba(238, 243, 251, 0.34), transparent 8%),
    linear-gradient(180deg, #1e5a8f 0%, #92b7c4 52%, transparent 53%);
}

.canvas-ground {
  top: 53%;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.3) 0 1px, transparent 1px 70px),
    linear-gradient(180deg, #c9b78a, #7d6f58);
  opacity: 0.92;
}

.machine {
  position: absolute;
  background: var(--yellow);
  border: 2px solid rgba(21, 16, 8, 0.5);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.24);
}

.arm-one {
  left: 28%;
  top: 35%;
  width: 230px;
  height: 28px;
  border-radius: 999px;
  transform: rotate(-24deg);
}

.arm-two {
  left: 32%;
  top: 54%;
  width: 168px;
  height: 74px;
  border-radius: 30px 80px 18px 18px;
}

.box {
  position: absolute;
  border: 2px solid var(--green);
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgba(49, 208, 124, 0.16);
}

.box span {
  position: absolute;
  left: -2px;
  top: -28px;
  padding: 4px 7px;
  border-radius: 5px;
  background: rgba(49, 208, 124, 0.95);
  color: #06110b;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.box-person {
  right: 16%;
  bottom: 21%;
  width: 42px;
  height: 88px;
}

.box-loader {
  left: 27%;
  bottom: 19%;
  width: 294px;
  height: 170px;
  border-color: var(--yellow);
}

.box-loader span {
  background: var(--yellow);
}

.box-sign {
  right: 30%;
  top: 43%;
  width: 54px;
  height: 48px;
  border-color: var(--blue);
}

.box-sign span {
  background: var(--blue);
  color: #06101c;
}

.cursor {
  position: absolute;
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 999px;
  color: #07100b;
  font-size: 12px;
  font-weight: 900;
  box-shadow: 0 0 0 4px rgba(49, 208, 124, 0.16);
}

.cursor-a {
  left: 58%;
  top: 34%;
  background: var(--green);
}

.cursor-b {
  right: 10%;
  bottom: 29%;
  background: var(--blue);
}

.label-row {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  gap: 10px;
  align-items: center;
  min-height: 40px;
  margin-bottom: 6px;
  padding: 0 8px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.label-row.active {
  background: rgba(255, 194, 71, 0.13);
  color: var(--text);
}

.label-row i {
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.label-row b {
  color: var(--faint);
  font-size: 11px;
}

.green {
  background: var(--green);
}

.yellow {
  background: var(--yellow);
}

.blue {
  background: var(--blue);
}

.purple {
  background: var(--purple);
}

.review-panel,
.dispatch-panel,
.ops-board,
.market-board {
  border: 1px solid rgba(155, 169, 194, 0.18);
  border-radius: 12px;
  background: rgba(16, 22, 33, 0.92);
}

.review-panel {
  margin-top: 18px;
  padding: 14px;
  border-color: rgba(49, 208, 124, 0.28);
}

.review-panel strong,
.review-panel span,
.dispatch-panel strong,
.dispatch-list span {
  display: block;
}

.review-panel strong {
  margin-bottom: 6px;
  color: #bdfbd7;
}

.review-panel span,
.dispatch-list span {
  color: var(--muted);
  font-size: 12px;
}

.dispatch-panel {
  position: absolute;
  right: 42px;
  bottom: 36px;
  width: 292px;
  padding: 18px;
  border-color: rgba(255, 194, 71, 0.36);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.42);
}

.panel-kicker {
  display: block;
  margin-bottom: 4px;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 800;
}

.dispatch-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  color: #ffffff;
  font-size: clamp(46px, 5.6vw, 76px);
  font-weight: 860;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

@media (min-width: 721px) {
  h1 span {
    white-space: nowrap;
  }
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 34px;
  color: #c5cfde;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.button {
  min-width: 138px;
  min-height: 48px;
  padding: 0 22px;
}

.button.primary {
  color: #111722;
  background: var(--yellow);
  border-color: rgba(255, 194, 71, 0.78);
}

.button.secondary {
  color: var(--text);
  background: rgba(17, 23, 34, 0.72);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 640px;
  margin: 46px 0 0;
}

.hero-metrics div {
  min-height: 92px;
  padding: 18px;
  border: 1px solid rgba(155, 169, 194, 0.18);
  border-radius: 8px;
  background: rgba(17, 23, 34, 0.68);
  backdrop-filter: blur(16px);
}

.hero-metrics dt {
  margin-bottom: 8px;
  color: #ffffff;
  font-size: 17px;
  font-weight: 800;
}

.hero-metrics dd {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.section {
  padding: clamp(76px, 9vw, 120px) clamp(20px, 5vw, 72px);
}

.section-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.band {
  border-top: 1px solid rgba(155, 169, 194, 0.12);
  border-bottom: 1px solid rgba(155, 169, 194, 0.12);
  background: #0a0e15;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.75fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: end;
  margin-bottom: 44px;
}

.section-heading.narrow {
  display: block;
  max-width: 720px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 4vw, 56px);
  font-weight: 840;
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.section-copy p,
.cta-inner p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(155, 169, 194, 0.14);
  border-radius: 12px;
  background: rgba(155, 169, 194, 0.14);
}

.feature {
  min-height: 260px;
  padding: 30px;
  background: #0f1520;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 34px;
  border: 1px solid rgba(255, 194, 71, 0.36);
  border-radius: 8px;
  color: var(--yellow);
  font-size: 13px;
  font-weight: 850;
}

.feature h3,
.usecase h3 {
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.25;
}

.feature p,
.usecase p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.workflow-section {
  background:
    linear-gradient(rgba(155, 169, 194, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(155, 169, 194, 0.04) 1px, transparent 1px),
    var(--bg);
  background-size: 52px 52px;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 50px 0 0;
  list-style: none;
}

.workflow li {
  position: relative;
  min-height: 226px;
  padding: 28px 22px;
  border: 1px solid rgba(155, 169, 194, 0.16);
  border-radius: 10px;
  background: rgba(17, 23, 34, 0.9);
}

.workflow li:not(:last-child)::after {
  position: absolute;
  right: -13px;
  top: 54px;
  width: 12px;
  height: 2px;
  background: var(--yellow);
  content: "";
}

.workflow span {
  display: block;
  margin-bottom: 42px;
  color: #fff;
  font-size: 19px;
  font-weight: 820;
}

.workflow p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.84fr) minmax(0, 1.16fr);
  gap: clamp(34px, 7vw, 88px);
  align-items: center;
}

.split.reverse {
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
}

.section-copy h2 {
  margin-bottom: 22px;
}

.check-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: #d8e0ec;
  font-weight: 660;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 2px;
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border-radius: 5px;
  background: var(--yellow);
  color: #161006;
  font-size: 12px;
  font-weight: 900;
  content: "✓";
}

.ops-board,
.market-board {
  padding: 24px;
  box-shadow: var(--shadow);
}

.board-header {
  margin-bottom: 20px;
  color: #fff;
  font-weight: 820;
}

.board-header b {
  color: var(--yellow);
  font-size: 13px;
}

.board-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.board-columns > div {
  min-height: 260px;
  padding: 16px;
  border: 1px solid rgba(155, 169, 194, 0.13);
  border-radius: 10px;
  background: rgba(7, 9, 13, 0.38);
}

.board-columns h3 {
  margin-bottom: 14px;
  color: var(--faint);
  font-size: 13px;
}

.task {
  display: block;
  min-height: 62px;
  margin-bottom: 10px;
  padding: 14px;
  border: 1px solid rgba(155, 169, 194, 0.12);
  border-radius: 8px;
  background: #141c29;
  color: #dce4f0;
  font-size: 13px;
  font-weight: 680;
}

.task.active {
  border-color: rgba(255, 194, 71, 0.4);
  background: rgba(255, 194, 71, 0.12);
}

.task.done {
  border-color: rgba(49, 208, 124, 0.28);
  background: rgba(49, 208, 124, 0.1);
}

.board-footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.board-footer span {
  padding: 14px;
  border: 1px solid rgba(155, 169, 194, 0.12);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
  font-weight: 720;
}

.community-section {
  background: #0a0e15;
}

.market-task {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 84px;
  margin-bottom: 12px;
  padding: 18px;
  border: 1px solid rgba(155, 169, 194, 0.14);
  border-radius: 10px;
  background: #0d131d;
}

.market-task.highlighted {
  border-color: rgba(255, 194, 71, 0.42);
  background: rgba(255, 194, 71, 0.1);
}

.market-task strong,
.market-task span {
  display: block;
}

.market-task strong {
  margin-bottom: 6px;
}

.market-task span {
  color: var(--muted);
  font-size: 13px;
}

.market-task b {
  color: var(--yellow);
  white-space: nowrap;
}

.annotators {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
}

.annotators span {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: #182131;
  color: #fff;
  font-size: 13px;
  font-weight: 850;
}

.annotators span:last-child {
  width: auto;
  padding: 0 14px;
  color: var(--yellow);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.chip-list span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(255, 194, 71, 0.25);
  border-radius: 8px;
  background: rgba(255, 194, 71, 0.08);
  color: #ffe6a6;
  font-size: 13px;
  font-weight: 760;
}

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

.usecase {
  min-height: 260px;
  padding: 18px;
  border: 1px solid rgba(155, 169, 194, 0.15);
  border-radius: 10px;
  background: #0f1520;
}

.tile {
  width: 100%;
  aspect-ratio: 16 / 8;
  margin-bottom: 18px;
}

.tile.roads {
  background:
    linear-gradient(110deg, transparent 0 45%, rgba(255, 255, 255, 0.42) 46% 47%, transparent 48%),
    linear-gradient(180deg, #214966 0 46%, #2c3037 47% 100%);
}

.tile.retail {
  background:
    linear-gradient(90deg, rgba(255, 194, 71, 0.85) 0 22%, transparent 23%),
    repeating-linear-gradient(90deg, #1a2433 0 34px, #263044 35px 68px);
}

.tile.medical {
  background:
    radial-gradient(circle at 50% 50%, transparent 0 18%, rgba(86, 160, 255, 0.48) 19% 20%, transparent 21%),
    radial-gradient(circle at 48% 50%, rgba(86, 160, 255, 0.2), transparent 36%),
    #101928;
}

.tile.industry {
  background:
    linear-gradient(135deg, transparent 0 44%, rgba(255, 88, 118, 0.6) 45% 49%, transparent 50%),
    linear-gradient(180deg, #263043 0 52%, #5b6574 53% 100%);
}

.tile.text {
  background:
    repeating-linear-gradient(180deg, rgba(238, 243, 251, 0.5) 0 2px, transparent 3px 18px),
    #121a27;
}

.tile.video {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 0 10%, transparent 11% 89%, rgba(255, 255, 255, 0.12) 90%),
    radial-gradient(circle at 50% 48%, rgba(49, 208, 124, 0.34), transparent 28%),
    #111827;
}

.cta-section {
  background:
    linear-gradient(135deg, rgba(255, 194, 71, 0.14), transparent 34%),
    #0a0e15;
}

.cta-inner {
  max-width: 780px;
  text-align: center;
}

.cta-inner h2 {
  margin-bottom: 22px;
}

.cta-inner .hero-actions {
  justify-content: center;
  margin-top: 30px;
}

.site-footer {
  padding: 36px clamp(20px, 5vw, 72px);
  border-top: 1px solid rgba(155, 169, 194, 0.12);
  background: #07090d;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 24px;
  align-items: center;
  width: min(100%, var(--max));
  margin: 0 auto;
}

.footer-links {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.copyright {
  color: var(--faint);
  font-size: 13px;
}

.modal-open {
  overflow: hidden;
}

.contact-modal[hidden] {
  display: none;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
}

.contact-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 5, 9, 0.76);
  backdrop-filter: blur(8px);
}

.contact-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  padding: 34px;
  border: 1px solid rgba(255, 194, 71, 0.36);
  border-radius: 12px;
  background: #101722;
  box-shadow: var(--shadow);
  text-align: center;
  outline: none;
}

.contact-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(155, 169, 194, 0.18);
  border-radius: 8px;
  background: rgba(7, 9, 13, 0.44);
  color: var(--muted);
  cursor: pointer;
  transition:
    color 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.contact-close:hover {
  border-color: rgba(255, 194, 71, 0.42);
  background: rgba(255, 194, 71, 0.1);
  color: var(--text);
}

.contact-kicker {
  margin: 0 0 12px;
  color: var(--yellow);
  font-size: 13px;
  font-weight: 850;
}

.contact-dialog h2 {
  margin-bottom: 24px;
  color: #fff;
  font-size: 28px;
  line-height: 1.3;
}

.copy-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 142px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid rgba(255, 194, 71, 0.78);
  border-radius: 8px;
  background: var(--yellow);
  color: #111722;
  font-size: 14px;
  font-weight: 780;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease;
}

.copy-contact:hover {
  transform: translateY(-1px);
  background: var(--yellow-2);
}

.copy-feedback {
  min-height: 22px;
  margin: 14px 0 0;
  color: #bdfbd7;
  font-size: 13px;
}

@media (max-width: 1040px) {
  .site-header {
    grid-template-columns: 1fr auto auto;
  }

  .nav-links {
    position: fixed;
    inset: 72px 16px auto;
    display: none;
    grid-column: 1 / -1;
    padding: 18px;
    border: 1px solid rgba(155, 169, 194, 0.18);
    border-radius: 12px;
    background: rgba(17, 23, 34, 0.98);
    box-shadow: var(--shadow);
  }

  .site-header.menu-open .nav-links {
    display: grid;
    gap: 14px;
  }

  .menu-button {
    display: block;
  }

  .workspace-scene {
    width: 820px;
    opacity: 0.56;
    transform: perspective(1200px) rotateY(-8deg);
  }

  .feature-grid,
  .workflow,
  .usecase-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workflow li:not(:last-child)::after {
    display: none;
  }

  .split,
  .split.reverse,
  .section-heading {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 64px;
    gap: 12px;
  }

  .brand {
    font-size: 19px;
  }

  .brand-logo {
    width: 48px;
    max-height: 31px;
  }

  .brand-name-cn {
    font-size: 20px;
  }

  .brand-name-en {
    font-size: 12px;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 112px;
  }

  .hero-grid {
    justify-content: center;
    padding: 340px 0 0;
  }

  .workspace-scene {
    width: 760px;
    min-height: 480px;
    opacity: 0.2;
    transform: none;
  }

  h1 {
    font-size: clamp(40px, 12.5vw, 54px);
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-metrics,
  .feature-grid,
  .workflow,
  .usecase-grid,
  .board-columns,
  .board-footer,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .section {
    padding-top: 70px;
    padding-bottom: 70px;
  }

  .feature {
    min-height: 220px;
  }

  .ops-board,
  .market-board {
    padding: 18px;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 460px) {
  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .market-task {
    display: grid;
  }

  .contact-dialog {
    padding: 32px 20px 26px;
  }

  .contact-dialog h2 {
    font-size: 23px;
  }
}