@charset "UTF-8";
:root {
  --bg: #f5f5f7;
  --paper: #fff;
  --ink: #1d1d1f;
  --muted: #707078;
  --blue: #0066cc;
  --line: #dedee3;
  --radius: 28px;
  --font:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
.inline-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: #8aaed5;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition:
    color 0.2s,
    text-decoration-color 0.2s;
}
.inline-link:hover {
  color: var(--blue);
  text-decoration-color: currentColor;
}
button {
  font: inherit;
  color: inherit;
}
a,
button,
summary {
  -webkit-tap-highlight-color: transparent;
}
button,
summary {
  cursor: pointer;
}
img,
svg {
  display: block;
  max-width: 100%;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.04em;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid #0071e3;
  outline-offset: 6px;
}
::selection {
  background: #cbe3ff;
}
.wrap {
  width: min(1120px, calc(100% - 80px));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 20px;
  background: #fff;
  padding: 12px;
  z-index: 100;
}
.skip-link:focus {
  top: 10px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(250, 250, 252, 0.82);
  border-bottom: 1px solid rgba(0, 0, 0, 0.065);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}
.nav-wrap {
  max-width: 1120px;
  margin: auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.brand-icon {
  font-size: 26px;
  font-weight: 750;
  line-height: 1;
}
.brand-icon span {
  color: #0066cc;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 12px;
  font-weight: 500;
}
.site-header nav > a {
  transition: color 0.2s;
}
.site-header nav > a:hover {
  color: var(--blue);
}
.site-header nav .nav-contact {
  background: #1d1d1f;
  color: white;
  border-radius: 30px;
  padding: 7px 16px;
}
.nav-contact span {
  margin-left: 9px;
}
.menu-toggle {
  display: none;
}
.theme-toggle {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  line-height: 1;
  font-size: 19px;
  transition:
    background 0.2s,
    border-color 0.2s,
    transform 0.2s;
}
.theme-toggle:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}
.eyebrow {
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.16em;
  line-height: 1.5;
}
.hero {
  min-height: 635px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  align-items: center;
  padding-top: 48px;
  padding-bottom: 35px;
}
.hero .eyebrow {
  color: #536e89;
  display: flex;
  align-items: center;
  gap: 9px;
}
.live-dot {
  width: 6px;
  height: 6px;
  flex: none;
  display: inline-block;
  background: #3d957f;
  border-radius: 50%;
  box-shadow: 0 0 0 4px #3d957f0e;
}
.hero h1 {
  font-size: clamp(52px, 5.4vw, 76px);
  line-height: 1.15;
  letter-spacing: -0.065em;
  margin: 24px 0;
}
.hero h1 > span {
  background: linear-gradient(110deg, #0b3762, #227bd0 60%, #5d97c7);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}
.hero-name {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.hero-name span {
  font-size: 16px;
  color: #74747d;
  font-weight: 400;
  margin-left: 12px;
}
.hero-description {
  font-size: 14px;
  line-height: 1.95;
  color: #6e6e73;
  margin-top: 18px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 20px;
}
.button {
  display: inline-flex;
  gap: 24px;
  align-items: center;
  border-radius: 30px;
  padding: 12px 22px;
  font-size: 13px;
  font-weight: 500;
  transition:
    background 0.2s,
    transform 0.2s;
}
.primary {
  background: #0071e3;
  color: #fff;
}
.primary:hover {
  background: #0077ed;
  transform: translateY(-2px);
}
.text-link {
  font-size: 13px;
  color: var(--blue);
  font-weight: 500;
  white-space: nowrap;
}
.text-link > span {
  display: inline-block;
  margin-left: 8px;
  transition: transform 0.2s;
}
.text-link:hover > span {
  transform: translateX(4px);
}
.hero-art {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  isolation: isolate;
}
.hero-art > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  animation: float 10s ease-in-out infinite;
}
.art-glow {
  position: absolute;
  inset: 14% 0 0;
  background: radial-gradient(ellipse, #e0eaf7 0, transparent 69%);
  filter: blur(20px);
  z-index: -1;
}
.art-label {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid #fff;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px #273d6010;
  color: #455c78;
  font-size: 12px;
  letter-spacing: 0.02em;
}
.art-label i {
  height: 6px;
  width: 6px;
  background: #6c9acd;
  border-radius: 50%;
}
.label-top {
  top: 20%;
  right: 0;
}
.label-bottom {
  bottom: 18%;
  left: 4%;
  font-size: 14px;
}
.label-bottom span {
  margin-left: 18px;
  color: #699cd0;
}
.art-caption {
  position: absolute;
  bottom: 4%;
  width: 100%;
  text-align: center;
  font-size: 9px;
  color: #7a8797;
  letter-spacing: 0.18em;
}
.intro-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 23px;
}
.intro-strip p {
  font-size: 13px;
  font-weight: 600;
}
.intro-strip p span {
  font-weight: 400;
  color: var(--muted);
  margin-left: 16px;
}
.intro-strip > a {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}
.intro-strip > a span {
  margin-left: 16px;
}
.section {
  padding-block: 102px;
}
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 38px;
}
.section-heading .eyebrow {
  color: var(--muted);
  margin-bottom: 17px;
}
h2 {
  font-size: 43px;
  line-height: 1.25;
  letter-spacing: -0.045em;
}
.section-heading h2 span {
  color: #787880;
}
.section-intro {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
  padding-bottom: 4px;
}
.card {
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid #ebebee;
}
.research-feature {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  min-height: 420px;
}
.feature-copy {
  padding: 38px 42px;
  position: relative;
  z-index: 2;
}
.card-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  font-size: 11px;
  color: #74747b;
  letter-spacing: 0.04em;
}
.status {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #287860;
  font-size: 10px;
  border-radius: 20px;
  background: #eff7f3;
  padding: 4px 9px;
  white-space: nowrap;
  letter-spacing: 0;
}
.status i {
  width: 4px;
  height: 4px;
  background: #44957c;
  border-radius: 50%;
}
.neutral {
  color: #6c727c;
  background: #f2f3f5;
}
.feature-copy h3 {
  margin-top: 34px;
  font-size: 34px;
  letter-spacing: -0.04em;
}
.feature-copy h3 > span {
  display: block;
  font-size: 23px;
  color: #6e6e73;
  margin-top: 8px;
  font-weight: 500;
}
.feature-copy > p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
  margin-top: 23px;
  max-width: 410px;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
.tags > span {
  font-size: 10px;
  background: #f5f5f7;
  color: #6e6e73;
  border-radius: 7px;
  padding: 5px 9px;
}
.research-resource {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 20px;
  color: var(--blue);
  font-size: 12px;
  line-height: 1.5;
  font-weight: 550;
}
.research-resource span {
  transition: transform 0.2s;
}
.research-resource:hover span {
  transform: translate(2px, -2px);
}
.research-details {
  margin-top: 26px;
  border-top: 1px solid #ededf0;
}
.research-details summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 0 0;
  font-size: 12px;
  color: var(--blue);
  user-select: none;
}
.research-details summary::-webkit-details-marker {
  display: none;
}
.research-details summary > span {
  height: 23px;
  width: 23px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #f1f4f8;
  color: #52667a;
  font-size: 18px;
  transition: transform 0.25s;
}
.research-details[open] summary > span {
  transform: rotate(45deg);
}
.detail-body dl {
  margin: 20px 0 0;
  font-size: 12px;
}
.detail-body dt {
  font-weight: 650;
  margin-top: 15px;
}
.detail-body dd {
  margin: 4px 0 0;
  color: var(--muted);
  line-height: 1.8;
}
.chem-art {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
  background: linear-gradient(135deg, #fafbfd, #edf2fa);
  overflow: hidden;
}
.chem-art svg {
  position: relative;
  width: 86%;
  z-index: 2;
  filter: drop-shadow(0 22px 16px #4369a321);
  transform: rotate(-9deg);
}
.chem-halo {
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, #dce9f8 55%, #c6d8f5);
  opacity: 0.6;
  filter: blur(25px);
}
.chem-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(#426da105 1px, transparent 1px),
    linear-gradient(90deg, #426da105 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse, #000, transparent 70%);
}
.visual-note {
  position: absolute;
  bottom: 28px;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: 9px;
  letter-spacing: 0.13em;
  color: #6e819b;
}
.research-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
  align-items: start;
}
.research-card {
  padding: 30px 34px;
}
.research-card h3 {
  font-size: 25px;
  margin-top: 12px;
}
.research-card > p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  margin-top: 15px;
}
.mini-visual {
  height: 174px;
  position: relative;
  margin-top: 18px;
  overflow: hidden;
}
.mini-caption {
  position: absolute;
  bottom: 6px;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: 8px;
  letter-spacing: 0.16em;
  color: #7c8790;
}
.registration-art {
  background: radial-gradient(ellipse, #edf1f4, transparent 65%);
}
.image-plane {
  position: absolute;
  left: 50%;
  top: 22px;
  display: block;
  width: 133px;
  height: 96px;
  border-radius: 8px;
  border: 1px solid #9bb1c488;
  transform: translateX(-50%) rotate(-23deg) skew(10deg);
  background:
    repeating-linear-gradient(0deg, transparent 0 15px, #7290ac24 16px 17px),
    repeating-linear-gradient(90deg, transparent 0 15px, #7290ac24 16px 17px);
}
.plane-back {
  transform: translate(-35%, 19%) rotate(-23deg) skew(10deg);
  background-color: #e7edf3;
}
.plane-front {
  background-color: #f8fbfcbb;
}
.crosshair {
  position: absolute;
  left: calc(50% - 6px);
  top: 62px;
  width: 14px;
  height: 14px;
  border: 1px solid #477da7;
  border-radius: 50%;
  box-shadow: 0 0 0 7px #487da70c;
}
.crosshair:after,
.crosshair:before {
  content: "";
  position: absolute;
  background: #477da7;
}
.crosshair:after {
  height: 1px;
  width: 24px;
  left: -6px;
  top: 6px;
}
.crosshair:before {
  height: 24px;
  width: 1px;
  left: 6px;
  top: -6px;
}
.photometry-art svg {
  height: 139px;
  width: 100%;
  padding: 10px 20px;
}
.manuscripts {
  display: flex;
  gap: 22px;
  align-items: center;
  border-top: 1px solid var(--line);
  margin-top: 32px;
  padding-top: 27px;
}
.manuscript-icon {
  font-size: 24px;
  color: #81818b;
}
.manuscripts h3 {
  font-size: 15px;
  letter-spacing: 0;
}
.manuscripts p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 5px;
}
.outline-label {
  margin-left: auto;
  font-size: 10px;
  border: 1px solid #d7d7dd;
  color: #6e6e76;
  border-radius: 20px;
  padding: 4px 11px;
  white-space: nowrap;
}
.engineering-section {
  background: #ededf0;
}
.agent-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: #141820;
  color: #fff;
  border-radius: var(--radius);
  padding: 48px;
  overflow: hidden;
  position: relative;
}
.dark-kicker {
  font-size: 9px;
  letter-spacing: 0.14em;
  color: #9caec6;
}
.agent-card h3 {
  font-size: 37px;
  margin-top: 22px;
}
.agent-card h3 span {
  display: block;
  font-size: 21px;
  color: #bcc4d1;
  font-weight: 450;
  margin-top: 10px;
  letter-spacing: -0.02em;
}
.agent-card p {
  font-size: 13px;
  color: #9ca6b5;
  line-height: 1.9;
  margin-top: 23px;
}
.agent-link {
  display: inline-flex;
  align-items: center;
  gap: 30px;
  font-size: 12px;
  margin-top: 32px;
  color: #cae0ff;
}
.agent-link > span {
  transition: transform 0.2s;
}
.agent-card:hover .agent-link > span {
  transform: translate(3px, -3px);
}
.workflow-art {
  border: 1px solid #ffffff16;
  border-radius: 15px;
  background: linear-gradient(140deg, #242c3a, #1b2029);
  padding: 18px;
  transform: perspective(900px) rotateY(-7deg);
  box-shadow: 0 20px 60px #0004;
}
.window-dots {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 26px;
}
.window-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #58616f;
}
.window-dots > span {
  margin-left: auto;
  font-size: 9px;
  color: #8d96a5;
}
.workflow-row {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 15px 12px;
  background: #ffffff03;
  border: 1px solid #ffffff06;
  border-radius: 8px;
  margin-top: 8px;
}
.workflow-row b {
  font: 11px var(--font);
  color: #8796a7;
}
.workflow-row > span {
  font-size: 13px;
  font-weight: 500;
}
.workflow-row small {
  display: block;
  font-size: 9px;
  color: #8e9bad;
  margin-top: 2px;
  font-weight: 400;
}
.workflow-row i {
  font-size: 11px;
  font-style: normal;
  margin-left: auto;
  color: #6d9f8c;
}
.workflow-row.current {
  border-color: #72a5ff45;
  background: #77a4ff09;
}
.workflow-row.current > i {
  color: #a3c9ff;
}
.workflow-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 7px;
  letter-spacing: 0.075em;
  margin-top: 22px;
  color: #8d9cae;
}
.workflow-footer .live-dot {
  height: 4px;
  width: 4px;
}
.small-projects {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}
.small-projects > a {
  display: flex;
  gap: 18px;
  align-items: center;
  border-radius: 20px;
  padding: 27px;
  background: #f8f8fa;
  transition: background 0.2s;
}
.small-projects > a:hover {
  background: #fff;
}
.project-number {
  align-self: flex-start;
  font-size: 10px;
  color: #797983;
  margin-top: 4px;
}
.small-projects h3 {
  font-size: 16px;
  letter-spacing: -0.02em;
}
.small-projects p {
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
}
.arrow-circle {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: #fff9;
  border: 1px solid #00000008;
  border-radius: 50%;
  font-size: 14px;
  flex: none;
}
.small-projects .arrow-circle {
  margin-left: auto;
}
.learning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.learning-card {
  padding: 28px;
  border-radius: 24px;
  display: block;
  transition:
    transform 0.35s,
    box-shadow 0.35s;
}
.learning-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 35px #2532500b;
}
.optimization {
  background: #e9eff9;
  color: #2c496a;
}
.probability {
  background: #eeeaf3;
  color: #605274;
}
.structures {
  background: #e9efec;
  color: #406052;
}
.learning-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  font-size: 8px;
  letter-spacing: 0.08em;
}
.learning-symbol {
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 80px;
  line-height: 1;
  font-style: italic;
  color: #7286a4;
  letter-spacing: -0.09em;
  font-weight: 400;
}
.learning-symbol span {
  font-size: 0.77em;
}
.probability .learning-symbol {
  color: #9c8daf;
}
.learning-card h3 {
  font-size: 23px;
  letter-spacing: -0.03em;
}
.learning-card > p {
  font-size: 12px;
  line-height: 1.9;
  margin-top: 15px;
  opacity: 0.8;
}
.learning-bottom {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid #0000000d;
  font-size: 8px;
}
.learning-bottom > span {
  white-space: nowrap;
}
.tree-symbol {
  position: relative;
  width: 120px;
  margin: auto;
  background:
    linear-gradient(#95aea0, #95aea0) center 51px/1px 41px no-repeat,
    linear-gradient(#95aea0, #95aea0) center 70px/75px 1px no-repeat,
    linear-gradient(#95aea0, #95aea0) 23px 70px/1px 21px no-repeat,
    linear-gradient(#95aea0, #95aea0) 97px 70px/1px 21px no-repeat;
}
.tree-symbol i {
  position: absolute;
  background: #a6bbb0;
  box-shadow: inset 1px 1px 4px #ffffff80;
  display: block;
  border-radius: 7px;
  height: 20px;
  width: 20px;
  left: 50px;
  top: 33px;
}
.tree-symbol i:nth-child(2) {
  top: 83px;
  left: 14px;
}
.tree-symbol i:nth-child(3) {
  top: 83px;
  left: 88px;
}
.tree-symbol i:nth-child(4) {
  top: 83px;
  left: 51px;
}
.about-section {
  padding-block: 55px 95px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}
.about-title .eyebrow {
  color: var(--muted);
  margin-bottom: 23px;
}
.about-title h2 {
  font-size: 38px;
}
.about-title h2 span {
  display: block;
  font-size: 22px;
  color: #7b7b84;
  margin-top: 8px;
  font-weight: 450;
}
.about-title .text-link {
  display: inline-block;
  margin-top: 25px;
}
.about-lead {
  font-size: 21px;
  font-weight: 550;
  line-height: 1.6;
  letter-spacing: -0.025em;
}
.about-content > p + p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.95;
  margin-top: 20px;
}
.about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  border-top: 1px solid var(--line);
  padding-top: 23px;
  margin-top: 25px;
}
.about-facts span {
  font-size: 10px;
  color: #707078;
}
.about-facts p {
  font-size: 11px;
  line-height: 1.95;
  margin-top: 8px;
}
.contact-section {
  padding: 82px 0 68px;
  background: #e9edf2;
  text-align: center;
}
.contact-section .eyebrow {
  color: #68758a;
  margin-bottom: 22px;
}
.contact-section h2 {
  font-size: 50px;
  letter-spacing: -0.05em;
  line-height: 1.2;
}
.contact-section h2 span {
  color: #748197;
}
.contact-section > .wrap > p:not(.eyebrow):not(.copy-status) {
  font-size: 13px;
  color: var(--muted);
  margin-top: 23px;
}
.email-link {
  display: inline-block;
  font-size: 22px;
  letter-spacing: -0.03em;
  color: #316594;
  margin-top: 26px;
}
.email-link span {
  font-size: 20px;
  margin-left: 14px;
}
.contact-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 27px;
  margin-top: 27px;
  font-size: 11px;
}
.contact-links > a {
  border-right: 1px solid #c9cfd8;
  padding-right: 27px;
}
.copy-wechat {
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 11px;
  display: flex;
  gap: 8px;
  align-items: center;
  color: #586679;
}
.copy-label {
  font-size: 9px;
  border: 1px solid #bdc6d2;
  border-radius: 5px;
  padding: 1px 5px;
}
.copy-status {
  min-height: 18px;
  font-size: 10px;
  color: #486c88;
  margin-top: 9px;
}
.footer {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  font-size: 10px;
  color: #707078;
}
.footer > p:nth-child(2) {
  letter-spacing: 0.12em;
}
.mobile-break {
  display: none;
}
@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(-1deg);
  }
  50% {
    transform: translateY(-9px) rotate(1deg);
  }
}
@media (min-width: 1440px) {
  .hero {
    min-height: 680px;
  }
  .hero h1 {
    font-size: 80px;
  }
}
@media (max-width: 1199px) {
  .nav-wrap {
    width: calc(100% - 80px);
  }
  .hero h1 {
    font-size: 62px;
  }
  .hero-description {
    font-size: 12px;
  }
  .feature-copy {
    padding: 32px;
  }
  .agent-card {
    gap: 30px;
    padding: 36px;
  }
  .learning-card {
    padding: 24px;
  }
  .learning-bottom {
    flex-direction: column;
    gap: 4px;
  }
  .research-card {
    padding: 28px;
  }
  .section-heading h2 {
    font-size: 38px;
  }
}
@media (max-width: 800px) {
  .wrap {
    width: calc(100% - 48px);
  }
  .nav-wrap {
    width: calc(100% - 48px);
  }
  .site-header nav {
    gap: 20px;
  }
  .brand {
    font-size: 14px;
  }
  .hero {
    min-height: 570px;
    gap: 0;
  }
  .hero h1 {
    font-size: 51px;
  }
  .hero .eyebrow {
    font-size: 8px;
  }
  .hero-description br:first-child {
    display: none;
  }
  .hero-description {
    max-width: 300px;
  }
  .hero-art {
    margin-top: 10px;
  }
  .label-top {
    top: 9%;
    font-size: 9px;
    right: 0;
  }
  .label-bottom {
    bottom: 6%;
    font-size: 10px;
    left: 7%;
  }
  .art-caption {
    bottom: -5%;
    font-size: 7px;
  }
  .hero-actions {
    gap: 19px;
  }
  .button {
    padding: 11px 17px;
    gap: 12px;
  }
  .intro-strip p span {
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }
  .section {
    padding-block: 75px;
  }
  .section-heading h2 {
    font-size: 32px;
  }
  .section-intro {
    font-size: 12px;
  }
  .feature-copy {
    padding: 28px;
  }
  .feature-copy h3 {
    font-size: 27px;
  }
  .feature-copy h3 > span {
    font-size: 18px;
  }
  .feature-copy > p {
    font-size: 12px;
  }
  .research-feature {
    grid-template-columns: 1.2fr 1fr;
  }
  .research-grid {
    gap: 18px;
    margin-top: 18px;
  }
  .research-card {
    padding: 25px;
  }
  .research-card h3 {
    font-size: 21px;
  }
  .research-card > p {
    font-size: 12px;
  }
  .card-kicker {
    font-size: 10px;
  }
  .agent-card {
    gap: 28px;
    padding: 32px;
  }
  .agent-card h3 {
    font-size: 30px;
  }
  .agent-card h3 span {
    font-size: 17px;
  }
  .agent-card p {
    font-size: 12px;
  }
  .workflow-art {
    padding: 12px;
  }
  .workflow-row {
    padding: 11px 8px;
  }
  .workflow-footer {
    font-size: 6px;
  }
  .small-projects {
    gap: 18px;
    margin-top: 18px;
  }
  .small-projects > a {
    padding: 22px;
    gap: 12px;
  }
  .small-projects h3 {
    font-size: 14px;
  }
  .small-projects p {
    font-size: 10px;
  }
  .learning-grid {
    gap: 16px;
  }
  .learning-card {
    padding: 20px;
  }
  .learning-top {
    font-size: 7px;
    letter-spacing: 0;
  }
  .learning-top .arrow-circle {
    width: 24px;
    height: 24px;
  }
  .learning-card h3 {
    font-size: 20px;
  }
  .learning-card > p {
    font-size: 10px;
  }
  .learning-symbol {
    font-size: 68px;
    height: 120px;
  }
  .about-section {
    gap: 30px;
    grid-template-columns: 0.8fr 1.2fr;
  }
  .about-title h2 {
    font-size: 31px;
  }
  .about-lead {
    font-size: 18px;
  }
  .about-facts {
    gap: 15px;
  }
  .about-facts p {
    font-size: 10px;
  }
}
@media (max-width: 600px) {
  html {
    scroll-padding-top: 78px;
  }
  .nav-wrap {
    min-height: 60px;
  }
  .brand {
    font-size: 14px;
  }
  .brand-icon {
    font-size: 25px;
  }
  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    background: transparent;
    border: 0;
    padding: 8px;
  }
  .menu-toggle span {
    display: block;
    width: 21px;
    height: 1.5px;
    background: #2b2b30;
    transition: transform 0.2s;
  }
  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(3.25px) rotate(45deg);
  }
  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-3.25px) rotate(-45deg);
  }
  .site-header nav {
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    display: none;
    background: #fafafc;
    border-bottom: 1px solid #e3e3e7;
    padding: 18px 24px 24px;
    gap: 0;
    box-shadow: 0 20px 30px #00000006;
  }
  .site-header nav.is-open {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 20px;
  }
  .site-header nav > a {
    padding: 13px 8px;
    font-size: 14px;
  }
  .site-header nav .nav-contact {
    grid-column: 1/-1;
    text-align: center;
    margin-top: 10px;
    padding: 10px;
  }
  .site-header nav .theme-toggle {
    margin: 6px 8px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 47px;
    padding-bottom: 22px;
    min-height: auto;
  }
  .hero-copy {
    position: relative;
    z-index: 2;
  }
  .hero .eyebrow {
    font-size: 8px;
    letter-spacing: 0.13em;
  }
  .hero h1 {
    font-size: clamp(48px, 12vw, 68px);
    margin-top: 22px;
    margin-bottom: 23px;
    line-height: 1.15;
  }
  .hero-name {
    font-size: 18px;
  }
  .hero-name span {
    font-size: 14px;
  }
  .hero-description {
    font-size: 12px;
    max-width: 100%;
    line-height: 1.9;
    margin-top: 14px;
  }
  .hero-description br:first-child {
    display: block;
  }
  .desktop-break {
    display: none;
  }
  .hero-actions {
    margin-top: 24px;
    gap: 27px;
  }
  .button {
    font-size: 12px;
    padding: 12px 21px;
  }
  .text-link {
    font-size: 12px;
  }
  .hero-art {
    width: 310px;
    max-width: 100%;
    height: 270px;
    aspect-ratio: auto;
    margin: -8px auto -4px;
  }
  .hero-art > img {
    width: 300px;
    max-width: none;
    position: absolute;
    left: 50%;
    margin-left: -150px;
    top: -14px;
  }
  .label-top {
    top: 24%;
    right: 0;
    padding: 8px 12px;
  }
  .label-bottom {
    bottom: 12%;
    left: 0;
    padding: 9px 13px;
  }
  .art-caption {
    bottom: 0;
    letter-spacing: 0.12em;
  }
  .intro-strip {
    padding-block: 18px;
    gap: 18px;
  }
  .intro-strip p {
    font-size: 11px;
  }
  .intro-strip p span {
    font-size: 10px;
    max-width: 210px;
  }
  .intro-strip > a {
    font-size: 9px;
  }
  .intro-strip > a span {
    margin-left: 8px;
  }
  .section {
    padding-block: 59px;
  }
  .section-heading {
    display: block;
    margin-bottom: 26px;
  }
  .section-heading .eyebrow {
    font-size: 9px;
    margin-bottom: 13px;
  }
  .section-heading h2 {
    font-size: 31px;
  }
  .section-heading .section-intro {
    margin-top: 18px;
    font-size: 12px;
  }
  .section-heading > .text-link {
    display: inline-block;
    margin-top: 18px;
  }
  .research-feature {
    display: flex;
    flex-direction: column-reverse;
    min-height: 0;
    border-radius: 23px;
  }
  .chem-art {
    height: 225px;
  }
  .chem-art svg {
    height: 230px;
    width: 280px;
    margin-top: -10px;
  }
  .visual-note {
    bottom: 12px;
    font-size: 7px;
  }
  .chem-halo {
    width: 230px;
    height: 230px;
  }
  .feature-copy {
    padding: 25px;
  }
  .feature-copy h3 {
    margin-top: 22px;
    font-size: 29px;
  }
  .feature-copy h3 > span {
    font-size: 20px;
  }
  .feature-copy > p {
    font-size: 13px;
    margin-top: 17px;
  }
  .tags {
    margin-top: 19px;
    gap: 7px;
  }
  .tags > span {
    font-size: 9px;
  }
  .research-details {
    margin-top: 22px;
  }
  .research-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .research-card {
    padding: 25px;
    border-radius: 23px;
  }
  .research-card h3 {
    font-size: 24px;
  }
  .research-card > p {
    font-size: 13px;
  }
  .mini-visual {
    height: 155px;
    margin-top: 10px;
  }
  .manuscripts {
    gap: 14px;
    margin-top: 26px;
    padding-top: 23px;
    flex-wrap: wrap;
  }
  .manuscript-icon {
    display: none;
  }
  .manuscripts h3 {
    font-size: 14px;
  }
  .manuscripts p {
    font-size: 11px;
    max-width: 240px;
  }
  .outline-label {
    font-size: 9px;
  }
  .agent-card {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 28px;
    border-radius: 23px;
  }
  .agent-card h3 {
    font-size: 34px;
    margin-top: 18px;
  }
  .agent-card h3 span {
    font-size: 20px;
  }
  .agent-card p {
    font-size: 12px;
    line-height: 1.9;
    margin-top: 19px;
  }
  .agent-link {
    margin-top: 23px;
  }
  .workflow-art {
    transform: none;
    padding: 16px;
  }
  .workflow-row {
    padding: 12px;
  }
  .workflow-footer {
    font-size: 7px;
  }
  .small-projects {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .small-projects > a {
    padding: 23px;
  }
  .small-projects h3 {
    font-size: 15px;
  }
  .small-projects p {
    font-size: 11px;
  }
  .learning-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .learning-card {
    padding: 25px;
    position: relative;
    overflow: hidden;
  }
  .learning-top {
    font-size: 8px;
    letter-spacing: 0.08em;
  }
  .learning-card h3 {
    font-size: 25px;
    margin-top: 34px;
  }
  .learning-card > p {
    font-size: 12px;
    margin-top: 12px;
    position: relative;
    z-index: 1;
  }
  .learning-symbol {
    position: absolute;
    right: 20px;
    top: 58px;
    width: 113px;
    height: 115px;
    font-size: 76px;
    opacity: 0.7;
  }
  .tree-symbol {
    top: 56px;
    right: 20px;
  }
  .learning-bottom {
    flex-direction: row;
    font-size: 9px;
    margin-top: 28px;
    padding-top: 17px;
  }
  .learning-top .arrow-circle {
    width: 28px;
    height: 28px;
  }
  .about-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 38px 55px;
  }
  .about-title .eyebrow {
    font-size: 9px;
    margin-bottom: 17px;
  }
  .about-title h2 {
    font-size: 32px;
  }
  .about-title h2 span {
    font-size: 21px;
  }
  .about-title .text-link {
    margin-top: 18px;
  }
  .about-lead {
    font-size: 20px;
  }
  .about-content > p + p {
    font-size: 13px;
  }
  .about-facts {
    gap: 20px;
  }
  .about-facts p {
    font-size: 10px;
  }
  .contact-section {
    padding-block: 55px 36px;
  }
  .contact-section .eyebrow {
    font-size: 9px;
  }
  .contact-section h2 {
    font-size: 37px;
  }
  .contact-section > .wrap > p:not(.eyebrow):not(.copy-status) {
    font-size: 12px;
  }
  .email-link {
    font-size: clamp(15px, 4.8vw, 22px);
    margin-top: 24px;
  }
  .email-link span {
    font-size: 16px;
    margin-left: 7px;
  }
  .contact-links {
    gap: 17px;
    font-size: 10px;
    margin-top: 23px;
  }
  .contact-links > a {
    padding-right: 17px;
  }
  .copy-wechat {
    font-size: 10px;
    gap: 6px;
  }
  .copy-label {
    font-size: 8px;
  }
  .footer {
    flex-wrap: wrap;
    justify-content: space-between;
    padding-block: 24px;
    min-height: 80px;
    font-size: 9px;
    gap: 9px;
  }
  .footer > p:nth-child(2) {
    display: none;
  }
  .mobile-break {
    display: block;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
}
html[data-theme="dark"] {
  --bg: #080d16;
  --paper: #121b29;
  --ink: #edf3fd;
  --muted: #aab8c9;
  --blue: #8abfff;
  --line: #29384a;
  color-scheme: dark;
}
html[data-theme="dark"] ::selection {
  background: #345e8c;
}
html[data-theme="dark"] .skip-link {
  background: #121b29;
}
@media (max-width: 600px) {
  html[data-theme="dark"] .site-header nav {
    background: #121b29;
    border-color: #29384a;
  }
}
html[data-theme="dark"] .site-header {
  background: rgba(12, 19, 30, 0.84);
  border-color: #253348;
}
html[data-theme="dark"] .site-header nav .nav-contact {
  background: #dcecff;
  color: #102036;
}
html[data-theme="dark"] .menu-toggle span {
  background: #edf3fd;
}
html[data-theme="dark"] .hero .eyebrow,
html[data-theme="dark"] .art-label,
html[data-theme="dark"] .hero-name span,
html[data-theme="dark"] .hero-description,
html[data-theme="dark"] .art-caption,
html[data-theme="dark"] .card-kicker,
html[data-theme="dark"] .feature-copy h3 > span,
html[data-theme="dark"] .mini-caption,
html[data-theme="dark"] .visual-note,
html[data-theme="dark"] .manuscript-icon,
html[data-theme="dark"] .project-number,
html[data-theme="dark"] .about-title h2 span,
html[data-theme="dark"] .about-facts span,
html[data-theme="dark"] .footer {
  color: #aab8c9;
}
html[data-theme="dark"] .hero h1 > span {
  background-image: linear-gradient(110deg, #b4d3ff, #71b4ff 60%, #9bdce7);
}
html[data-theme="dark"] .art-glow {
  background: radial-gradient(ellipse, #233e68 0, transparent 70%);
}
html[data-theme="dark"] .art-label {
  background: rgba(25, 39, 57, 0.87);
  border-color: #3d536e;
  box-shadow: 0 8px 30px #0004;
}
html[data-theme="dark"] .card {
  border-color: #29384a;
}
html[data-theme="dark"] .section-heading h2 span,
html[data-theme="dark"] .contact-section h2 span,
html[data-theme="dark"] .profile h1 span,
html[data-theme="dark"] .profile .row span,
html[data-theme="dark"] .profile-note {
  color: #9baec3;
}
html[data-theme="dark"] .status {
  background: #173c38;
  color: #a9e1cb;
}
html[data-theme="dark"] .neutral,
html[data-theme="dark"] .tags > span,
html[data-theme="dark"] .research-details summary > span {
  background: #253347;
  color: #c2cede;
}
html[data-theme="dark"] .research-details {
  border-color: #29384a;
}
html[data-theme="dark"] .chem-art {
  background: linear-gradient(135deg, #17253b, #101d31);
}
html[data-theme="dark"] .chem-halo {
  background: radial-gradient(circle, #4d79b2, #20395e 65%, transparent);
  opacity: 0.45;
}
html[data-theme="dark"] .registration-art {
  background: radial-gradient(ellipse, #34465c, transparent 68%);
}
html[data-theme="dark"] .plane-back {
  background-color: #304359;
}
html[data-theme="dark"] .plane-front {
  background-color: #60768aa6;
}
html[data-theme="dark"] .outline-label {
  border-color: #45566c;
  color: #b4c1d3;
}
html[data-theme="dark"] .engineering-section {
  background: #0d1521;
}
html[data-theme="dark"] .small-projects > a,
html[data-theme="dark"] .small-projects > a:hover {
  background: #1b293a;
}
html[data-theme="dark"] .arrow-circle {
  background: #29394b;
  border-color: #3a4d62;
}
html[data-theme="dark"] .optimization {
  background: #192b41;
  color: #d4e5fc;
}
html[data-theme="dark"] .probability {
  background: #2a253b;
  color: #e5daf5;
}
html[data-theme="dark"] .structures {
  background: #1a302b;
  color: #d5eee1;
}
html[data-theme="dark"] .learning-symbol,
html[data-theme="dark"] .probability .learning-symbol {
  color: currentColor;
  opacity: 0.6;
}
html[data-theme="dark"] .learning-bottom {
  border-color: #ffffff25;
}
html[data-theme="dark"] .tree-symbol i {
  background: #78998a;
}
html[data-theme="dark"] .contact-section {
  background: #101c2b;
}
html[data-theme="dark"] .contact-section .eyebrow,
html[data-theme="dark"] .email-link,
html[data-theme="dark"] .copy-wechat,
html[data-theme="dark"] .copy-status {
  color: #b4d4f9;
}
html[data-theme="dark"] .contact-links > a,
html[data-theme="dark"] .copy-label {
  border-color: #42526a;
}
html[data-theme="dark"] .profile-subtitle,
html[data-theme="dark"] .profile section p {
  color: var(--muted);
}
html[data-theme="dark"] .profile section {
  border-color: var(--line);
}
@media print {
  .site-header,
  .hero-art,
  .hero-actions,
  .chem-art,
  .mini-visual,
  .workflow-art,
  .contact-section,
  .footer,
  .intro-strip,
  .skip-link {
    display: none !important;
  }
  body {
    background: #fff;
    font-size: 11pt;
  }
  .wrap {
    width: 100%;
  }
  .hero,
  .section,
  .about-section {
    padding: 20px 0;
    min-height: 0;
  }
  h1 {
    font-size: 30pt !important;
  }
  h2 {
    font-size: 22pt !important;
  }
  .card,
  .agent-card {
    break-inside: avoid;
  }
  .research-feature,
  .research-grid,
  .learning-grid {
    display: block;
  }
  .card {
    border: 1px solid #ccc;
    margin-bottom: 16px;
  }
  .engineering-section {
    background: white;
  }
  .agent-card {
    background: #fff;
    color: #000;
  }
  .agent-card p,
  .agent-card h3 span {
    color: #555;
  }
  .hero h1 > span {
    color: #1d1d1f;
    background: none;
  }
  .learning-card {
    margin-bottom: 15px;
  }
  .section-heading {
    margin-bottom: 20px;
  }
  html[data-theme="dark"] {
    --bg: #fff;
    --paper: #fff;
    --ink: #1d1d1f;
    --muted: #555;
    --blue: #0066cc;
    --line: #dedee3;
    color-scheme: light;
  }
  html[data-theme="dark"] .profile h1 span,
  html[data-theme="dark"] .profile .row span,
  html[data-theme="dark"] .profile-note,
  html[data-theme="dark"] .profile-subtitle,
  html[data-theme="dark"] .profile section p {
    color: #555;
  }
  html[data-theme="dark"] .profile section {
    border-color: #dedee3;
  }
}

/* Prevent intrinsic illustration width from expanding the smallest screens. */
.hero > * {
  min-width: 0;
}
@media (max-width: 600px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
}