:root {
  color-scheme: light;
  --ink: #07111f;
  --ink-soft: #334155;
  --muted: #64748b;
  --line: #dbe5ef;
  --paper: #f6f9fc;
  --white: #ffffff;
  --blue: #0b64d8;
  --cyan: #02a5c7;
  --orange: #f47b34;
  --green: #0f9f6e;
  --radius: 8px;
  --shadow: 0 24px 72px rgba(15, 23, 42, 0.1);
  --content: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

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

h1 {
  margin-bottom: 24px;
  max-width: 940px;
  font-size: clamp(46px, 5.7vw, 82px);
  line-height: 1.03;
  font-weight: 880;
}

html[lang="en"] h1 {
  font-size: clamp(38px, 4.3vw, 60px);
  line-height: 1.08;
}

body[data-page="home"] .hero h1 {
  max-width: 900px;
}

@media (min-width: 1280px) {
  body[data-page="home"] .hero h1 {
    font-size: 72px;
  }
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(31px, 4.7vw, 56px);
  line-height: 1.08;
  font-weight: 840;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.28;
}

p {
  color: var(--ink-soft);
  line-height: 1.82;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 72px;
  padding: 0 clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(219, 229, 239, 0.78);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 126px;
}

.brand img {
  width: 100%;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.5vw, 24px);
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 720;
}

.site-nav a {
  position: relative;
  padding: 10px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, var(--blue), var(--orange));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 6px auto;
  background: var(--ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: repeat(3, 42px);
  height: 40px;
  padding: 3px;
  background: #f3f7fb;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.language-switch button {
  min-width: 0;
  padding: 0;
  color: var(--ink-soft);
  font: inherit;
  font-size: 13px;
  font-weight: 850;
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
}

.language-switch button.active {
  color: var(--white);
  background: var(--orange);
  box-shadow: 0 8px 18px rgba(244, 123, 52, 0.24);
}

.header-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 850;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero {
  min-height: 100svh;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(560px, 1.08fr) minmax(430px, 0.92fr);
  gap: clamp(44px, 5.8vw, 92px);
  align-items: center;
  padding:
    126px max(clamp(42px, 6vw, 96px), calc((100vw - 1480px) / 2 + 96px))
    88px;
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 22%, rgba(2, 165, 199, 0.14), transparent 32%),
    radial-gradient(circle at 48% 52%, rgba(11, 100, 216, 0.055), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 54%, #eef6fb 100%);
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-lede {
  max-width: 820px;
  margin-bottom: 32px;
  color: #21415e;
  font-size: clamp(18px, 1.65vw, 23px);
  font-weight: 680;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 820;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

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

.button.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), #084aa4);
  box-shadow: 0 16px 36px rgba(11, 100, 216, 0.26);
}

.button.secondary {
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
}

.hero-visual {
  position: relative;
  min-height: 560px;
  overflow: hidden;
}

.hero-visual::before {
  position: absolute;
  inset: 8% -12% -8% 8%;
  content: "";
  background-image:
    linear-gradient(rgba(11, 100, 216, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 100, 216, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  border-radius: 50%;
  mask-image: radial-gradient(circle, #000 32%, transparent 72%);
}

.visual-card {
  position: absolute;
  right: 0;
  bottom: 50%;
  width: min(620px, 100%);
  padding: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(219, 229, 239, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  overflow: hidden;
  transform: translateY(50%);
}

.visual-card img {
  width: 100%;
  transform: translate3d(var(--mx, 0), var(--my, 0), 0);
  transition: transform 120ms ease-out;
}

.section {
  padding: 104px clamp(20px, 6vw, 92px);
  scroll-margin-top: 72px;
}

.section-heading {
  max-width: 900px;
  margin-bottom: 46px;
}

.pain-grid,
.solution-flow,
.evidence-grid,
.zigzag,
.body-grid,
.scenario-cards,
.events-layout,
.about-section,
.contact-section {
  max-width: var(--content);
  margin-right: auto;
  margin-left: auto;
}

.section-heading.center {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.pain-section .section-heading,
.solution-section .section-heading {
  max-width: 980px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.page-hero {
  max-width: var(--content);
  margin: 0 auto;
  padding: 148px clamp(20px, 6vw, 72px) 76px;
}

.page-hero h1 {
  max-width: 980px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.03;
}

.page-hero p:not(.eyebrow) {
  max-width: 820px;
  color: #21415e;
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 640;
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  max-width: var(--content);
  margin: 28px auto 0;
}

.section-actions.left {
  justify-content: flex-start;
}

.pain-section,
.body-section {
  background: var(--white);
}

.solution-section,
.about-section {
  background: var(--paper);
}

.brain-section,
.scenario-section,
.events-section {
  background: var(--white);
}

.pain-grid,
.solution-flow,
.body-grid,
.scenario-cards,
.events-layout {
  display: grid;
  gap: 18px;
}

.pain-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.compact-grid article {
  min-height: 250px;
}

.pain-grid article,
.hardware-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.pain-grid span {
  display: block;
  margin-bottom: 56px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 850;
}

.solution-flow {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  counter-reset: solution;
}

.solution-flow div {
  position: relative;
  min-height: 250px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.solution-flow div::before {
  counter-increment: solution;
  content: "0" counter(solution);
  display: block;
  margin-bottom: 72px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 850;
}

.solution-flow strong {
  display: block;
  margin-bottom: 12px;
  font-size: 22px;
}

.page-flow div {
  min-height: 290px;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.evidence-grid figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.evidence-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center;
  border-bottom: 1px solid var(--line);
}

.evidence-grid figcaption {
  min-height: 54px;
  display: flex;
  align-items: center;
  padding: 14px 16px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 760;
  line-height: 1.45;
}

.zigzag {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: clamp(32px, 6vw, 82px);
  align-items: center;
  max-width: 1240px;
  margin-bottom: 72px;
}

.zigzag.reverse {
  grid-template-columns: minmax(420px, 1.05fr) minmax(0, 0.95fr);
}

.zigzag.reverse .copy-block {
  order: 2;
}

.copy-block h3 {
  font-size: clamp(26px, 3vw, 40px);
}

.copy-block p:not(.eyebrow) {
  max-width: 640px;
}

.copy-block ul {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.copy-block li {
  position: relative;
  padding-left: 20px;
  color: var(--ink-soft);
  line-height: 1.65;
}

.copy-block li::before {
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--orange);
  border-radius: 50%;
}

.ui-visual,
.pipeline-visual {
  min-height: 410px;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(11, 100, 216, 0.08), rgba(2, 165, 199, 0.04)),
    var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.ui-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
}

.ui-bar span {
  width: 10px;
  height: 10px;
  background: #c7d4e6;
  border-radius: 50%;
}

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

.ui-node {
  min-height: 84px;
  display: flex;
  align-items: center;
  padding: 16px;
  color: var(--ink-soft);
  font-weight: 780;
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.ui-node.active {
  color: var(--blue);
  border-color: rgba(11, 100, 216, 0.42);
  box-shadow: inset 0 0 32px rgba(11, 100, 216, 0.08);
}

.ui-node.accent {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-color: transparent;
}

.tech-figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.tech-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center;
  border-bottom: 1px solid var(--line);
}

.tech-figure figcaption {
  padding: 14px 16px 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}

.capability-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: var(--content);
  margin: 0 auto;
}

.capability-strip article {
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.capability-strip h3 {
  margin-bottom: 10px;
}

.capability-strip p {
  margin-bottom: 0;
  font-size: 15px;
}

.detail-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.technology-gallery {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.route-axis-shell {
  max-width: var(--content);
  margin: 0 auto;
}

.route-axis {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.route-axis li {
  position: relative;
  min-width: 0;
  min-height: 248px;
  padding: 26px 22px 22px;
  background: linear-gradient(180deg, #f9fbfe 0%, #eef5fb 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.route-axis li::after {
  position: absolute;
  top: 36px;
  right: -12px;
  width: 24px;
  height: 2px;
  content: "";
  background: rgba(11, 100, 216, 0.22);
}

.route-axis li:last-child::after {
  display: none;
}

.route-axis span,
.proof-card span {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.route-axis strong {
  display: block;
  margin-bottom: 14px;
  font-size: 24px;
  line-height: 1.12;
}

.route-axis p {
  margin-bottom: 0;
  font-size: 15px;
  line-height: 1.72;
}

.technology-proofs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: var(--content);
  margin: 0 auto;
}

.proof-card {
  display: grid;
  grid-template-columns: minmax(250px, 0.92fr) minmax(0, 1.08fr);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.proof-card img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  object-position: center;
  border-right: 1px solid var(--line);
}

.proof-card > div {
  padding: 26px;
}

.proof-card h3 {
  margin-bottom: 12px;
  font-size: clamp(24px, 2.2vw, 34px);
}

.proof-card p {
  margin-bottom: 0;
  font-size: 15px;
}

.tech-stage-media {
  display: grid;
  gap: 16px;
}

.tech-video-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.tech-video-copy {
  position: relative;
  padding: 16px 54px 16px 18px;
}

.tech-video-copy strong,
.tech-video-copy span {
  display: block;
}

.tech-video-copy strong {
  margin-bottom: 6px;
  font-size: 15px;
}

.tech-video-copy span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.tech-video-toggle summary {
  list-style: none;
  cursor: pointer;
}

.tech-video-toggle summary::-webkit-details-marker {
  display: none;
}

.tech-video-toggle summary::after {
  position: absolute;
  top: 50%;
  right: 18px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  content: "▶";
  color: var(--white);
  font-size: 11px;
  font-weight: 800;
  background: var(--blue);
  border-radius: 999px;
  transform: translateY(-50%);
}

.tech-video-toggle[open] summary::after {
  content: "−";
  font-size: 18px;
}

.tech-video-card video {
  width: 100%;
  display: block;
  margin-top: 0;
  background: #000;
}

.body-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.hardware-card {
  display: grid;
  grid-template-rows: 240px 1fr;
  overflow: hidden;
  padding: 0;
}

.product-shot,
.product-emblem {
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.product-shot img {
  max-width: 100%;
  filter: drop-shadow(0 20px 40px rgba(15, 23, 42, 0.12));
}

.product-emblem img {
  width: min(280px, 84%);
}

.product-emblem.compact img {
  width: 170px;
}

.hardware-copy {
  padding: 26px;
}

.hardware-copy span {
  display: block;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.hardware-copy p {
  margin-bottom: 0;
}

.scenario-cards {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.scenario-card {
  position: relative;
  min-height: 430px;
  display: flex;
  align-items: end;
  overflow: hidden;
  padding: 24px;
  color: var(--white);
  background: #111827;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scenario-card::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(180deg, transparent 0%, rgba(8, 17, 31, 0.82) 70%),
    var(--scene);
  background-position: center;
  background-size: cover;
  transition: transform 220ms ease;
}

.scenario-card:hover::before {
  transform: scale(1.04);
}

.scenario-card div {
  position: relative;
  z-index: 1;
}

.scenario-card span {
  display: block;
  margin-bottom: 12px;
  color: #93e9ff;
  font-size: 11px;
  font-weight: 850;
  text-transform: uppercase;
}

.scenario-card p {
  color: rgba(255, 255, 255, 0.78);
}

.scenario-card.sort {
  --scene: linear-gradient(135deg, rgba(11, 100, 216, 0.3), rgba(0, 0, 0, 0.1)), url("assets/illustrations/hero-robot-platform.jpg");
}

.scenario-card.waste {
  --scene:
    linear-gradient(135deg, rgba(15, 159, 110, 0.46), rgba(0, 0, 0, 0.24)),
    url("assets/illustrations/core-pain-points.png");
}

.scenario-card.rail {
  --scene:
    linear-gradient(135deg, rgba(244, 123, 52, 0.38), rgba(0, 0, 0, 0.2)),
    url("assets/illustrations/embodied-roadmap.png");
}

.scenario-card.twin {
  --scene:
    linear-gradient(135deg, rgba(2, 165, 199, 0.34), rgba(0, 0, 0, 0.18)),
    url("assets/illustrations/zhirong-first-page.png");
}

.events-section {
  background: var(--paper);
}

.events-layout {
  grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
  align-items: stretch;
}

.featured-event,
.event-list article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.featured-event {
  display: grid;
  grid-template-columns: minmax(300px, 0.94fr) minmax(0, 1.06fr);
  overflow: hidden;
}

.event-stack {
  display: grid;
  gap: 18px;
}

.event-media {
  display: grid;
  grid-template-rows: minmax(260px, 1fr) auto;
  min-width: 0;
  border-right: 1px solid var(--line);
}

.event-media > img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  object-position: center;
}

.event-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
}

.event-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  background: var(--white);
}

.featured-event > div:not(.event-media) {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(26px, 4vw, 44px);
}

.featured-event span,
.event-list time {
  display: block;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.featured-event h3 {
  font-size: clamp(26px, 3vw, 38px);
}

.featured-event p {
  margin-bottom: 24px;
}

.event-list {
  display: grid;
  gap: 14px;
}

.event-list article {
  padding: 24px;
}

.event-list h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.event-list p {
  margin-bottom: 0;
  font-size: 15px;
}

.home-event,
.split-feature {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
  max-width: var(--content);
  margin: 0 auto;
}

.home-event img,
.split-feature img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.split-feature {
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
}


.contact-topics {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 22px;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(360px, 0.74fr) minmax(620px, 1.26fr);
  gap: clamp(34px, 5vw, 72px);
  align-items: center;
  max-width: min(1500px, calc(100vw - 80px));
}

body[data-page="about"] .about-section {
  grid-template-columns: 1fr;
  gap: 34px;
}

body[data-page="about"] .about-copy {
  max-width: 880px;
}

.about-panel {
  padding: clamp(22px, 2.2vw, 34px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.about-panel > img {
  max-width: min(520px, 100%);
}

body[data-page="about"] .about-panel {
  width: 100%;
}

.team-portraits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.compact-team,
.team-directory {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.team-portraits article {
  min-width: 0;
  padding: 14px;
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.team-portraits img {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: contain;
  object-position: center;
  background: var(--white);
  border-radius: 5px;
}

.compact-team img,
.team-directory img {
  aspect-ratio: 1 / 1;
  height: auto;
}

.team-portraits strong,
.team-portraits span {
  display: block;
}

.team-portraits strong {
  margin-top: 12px;
  font-size: 15px;
}

.team-portraits span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.about-origin {
  margin: 18px 0 0;
  color: #34506a;
  font-size: 15px;
  font-weight: 620;
}

.slide-frame {
  max-width: var(--content);
  margin: 0 auto 28px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.slide-frame img {
  width: 100%;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: var(--content);
  margin: 0 auto;
}

.impact-grid-tight {
  margin-top: 18px;
}

.impact-card {
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.impact-card > span {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.impact-card h3 {
  font-size: 24px;
}

.impact-note,
.impact-list p {
  margin-bottom: 14px;
  font-size: 15px;
}

.logo-pair {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.logo-tile {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 18px;
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.logo-tile img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  object-position: center;
}

.logo-tile strong {
  font-size: 14px;
  line-height: 1.4;
}

.wordmark-chip {
  min-height: 90px;
  display: grid;
  place-items: center;
  padding: 16px;
  color: var(--blue);
  font-size: 26px;
  font-weight: 850;
  line-height: 1.1;
  text-align: center;
  background: linear-gradient(135deg, #eef5ff, #f8fbff);
  border: 1px solid #d7e6ff;
  border-radius: 6px;
}

.wordmark-chip-dark {
  min-height: 76px;
  color: #8c1515;
  font-size: 22px;
  background: linear-gradient(135deg, #fff7f7, #fffefe);
  border-color: #f1d5d5;
}

.badge-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge-cloud span {
  padding: 10px 12px;
  color: #254158;
  font-size: 13px;
  font-weight: 760;
  background: #eef5fb;
  border-radius: 999px;
}

.impact-proof {
  max-width: var(--content);
  margin: 0 auto;
}

.impact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.quote-card {
  text-align: center;
}

.quote-logo {
  width: min(220px, 100%);
  margin: 4px auto 18px;
}

.quote-logo-seal {
  width: min(148px, 100%);
}

.stanford-lockup {
  display: grid;
  justify-items: center;
  gap: 12px;
  margin: 6px auto 20px;
}

.stanford-seal {
  width: min(112px, 42%);
  aspect-ratio: 1;
  object-fit: contain;
}

.stanford-wordmark {
  width: min(300px, 88%);
  max-height: 86px;
  object-fit: contain;
}

.impact-roadmap {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  max-width: var(--content);
  margin: 0 auto;
}

.impact-roadmap div {
  min-height: 110px;
  display: grid;
  place-items: center;
  padding: 16px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 780;
  line-height: 1.45;
  text-align: center;
  background: linear-gradient(180deg, #f9fbfe 0%, #eef5fb 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.06);
}

.team-directory p {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.about-tags span {
  padding: 9px 11px;
  color: #254158;
  font-size: 13px;
  font-weight: 760;
  background: #eef5fb;
  border-radius: 999px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: clamp(28px, 6vw, 80px);
  align-items: center;
  background: linear-gradient(135deg, #f8fbff 0%, #eef7fc 100%);
}

.contact-copy p {
  max-width: 760px;
}

.wechat-card {
  padding: 18px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.wechat-card img {
  width: 100%;
  border-radius: 6px;
}

.wechat-card strong,
.wechat-card span {
  display: block;
}

.wechat-card strong {
  margin-top: 14px;
  font-size: 18px;
}

.wechat-card span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.email-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-top: 14px;
  padding: 0 14px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 820;
  background: #eef5ff;
  border: 1px solid #d8e8ff;
  border-radius: 6px;
}

.zrbot-widget {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 18px;
  color: var(--white);
  font-weight: 850;
  background: linear-gradient(135deg, var(--blue), #084aa4);
  border-radius: 8px;
  box-shadow: 0 18px 42px rgba(11, 100, 216, 0.28);
}

.zrbot-widget span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 50%;
}

.site-footer {
  padding: 64px clamp(20px, 6vw, 92px) 32px;
  color: rgba(255, 255, 255, 0.86);
  background: #07111f;
}

.compact-footer {
  padding-top: 34px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 42px;
}

.footer-brand img {
  width: 118px;
  padding: 4px 8px;
  background: var(--white);
  border-radius: 6px;
}

.footer-brand p,
.site-footer p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 44px;
}

.footer-links h3 {
  margin-bottom: 16px;
  font-size: 15px;
}

.footer-links a {
  display: block;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 22px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 1120px) {
  .site-header {
    gap: 12px;
  }

  .site-nav {
    gap: 12px;
    font-size: 13px;
  }

  .header-contact {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-visual {
    min-height: auto;
  }

  .visual-card {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(720px, 100%);
    margin-top: 18px;
    transform: none;
  }

  .solution-flow,
  .evidence-grid,
  .body-grid,
  .scenario-cards,
  .events-layout,
  .featured-event,
  .capability-strip,
  .impact-grid,
  .detail-grid,
  .technology-gallery,
  .technology-proofs,
  .home-event,
  .split-feature,
  .about-section {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .route-axis {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .proof-card {
    grid-template-columns: 1fr;
  }

  .proof-card img {
    min-height: 220px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .compact-team,
  .team-directory {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  html {
    scroll-padding-top: 66px;
  }

  .site-header {
    height: 66px;
    padding: 0 18px;
  }

  .brand {
    width: 112px;
  }

  .nav-toggle {
    display: block;
    z-index: 42;
  }

  .site-nav {
    position: fixed;
    inset: 66px 0 auto;
    display: grid;
    gap: 0;
    padding: 14px 20px 24px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    transition: transform 180ms ease;
  }

  body.nav-open .site-nav {
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 0;
  }

  .header-actions {
    margin-left: auto;
    gap: 8px;
  }

  .language-switch {
    grid-template-columns: repeat(3, 34px);
    height: 36px;
  }

  .language-switch button {
    font-size: 12px;
  }

  .hero {
    padding: 106px 20px 76px;
  }

  h1 {
    font-size: 42px;
  }

  html[lang="en"] h1 {
    font-size: 38px;
  }

  .section {
    padding: 76px 20px;
    scroll-margin-top: 66px;
  }

  .page-hero {
    padding: 116px 20px 58px;
  }

  .page-hero h1 {
    font-size: 42px;
  }

  .pain-grid,
  .solution-flow,
  .evidence-grid,
  .zigzag,
  .zigzag.reverse,
  .body-grid,
  .scenario-cards,
  .events-layout,
  .featured-event,
  .capability-strip,
  .impact-grid,
  .detail-grid,
  .technology-gallery,
  .technology-proofs,
  .home-event,
  .split-feature,
  .about-section,
  .contact-section,
  .footer-links {
    grid-template-columns: 1fr;
  }

  .route-axis {
    grid-template-columns: 1fr;
  }

  .logo-pair,
  .impact-roadmap {
    grid-template-columns: 1fr;
  }

  .event-media {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .event-media > img {
    min-height: 260px;
  }

  .zigzag.reverse .copy-block {
    order: 0;
  }

  .ui-visual,
  .pipeline-visual {
    min-height: 320px;
  }

  .pipeline-visual {
    grid-template-columns: 1fr;
  }

  .pipeline-visual div,
  .pipeline-visual div:nth-child(2n) {
    min-height: 72px;
    align-items: center;
  }

  .hardware-card {
    grid-template-rows: 220px 1fr;
  }

  .home-event img,
  .split-feature img {
    aspect-ratio: 4 / 3;
  }

  .contact-section {
    gap: 28px;
  }

  .wechat-card {
    max-width: 340px;
  }

  .team-portraits {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    display: grid;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-actions {
    display: grid;
  }

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

  .brand {
    width: 96px;
  }

  .language-switch {
    grid-template-columns: repeat(3, 30px);
  }

  .zrbot-widget {
    right: 16px;
    bottom: 16px;
    width: 54px;
    min-height: 54px;
    padding: 0;
    gap: 0;
    overflow: hidden;
    font-size: 0;
    border-radius: 999px;
  }

  .zrbot-widget span {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }
}