@import "tailwindcss";

:root {
  --paper: #f7f8f5;
  --ink: #101828;
  --muted: #667085;
  --blue: #155eef;
  --pale: #eaf0ff;
  --rule: #d8dee9;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}
a {
  color: inherit;
  text-decoration: none;
}
.shell {
  width: min(1320px, calc(100% - 80px));
  margin-inline: auto;
}
.site-header {
  height: 76px;
  padding: 0 max(40px, calc((100vw - 1320px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  position: relative;
  z-index: 10;
}
.wordmark {
  font-size: 22px;
  font-weight: 760;
  letter-spacing: -0.06em;
}
.wordmark span {
  color: var(--blue);
}
nav {
  display: flex;
  gap: 34px;
  font-size: 14px;
  font-weight: 600;
  color: #344054;
}
nav a {
  position: relative;
  padding: 28px 0;
}
nav a:after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 21px;
  height: 2px;
  background: var(--blue);
  transition: right 0.18s ease;
}
nav a:hover:after {
  right: 0;
}
.hero {
  min-height: 680px;
  padding: 74px 0 68px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.58fr);
  gap: 78px;
  align-items: center;
}
.eyebrow {
  margin: 0 0 24px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  line-height: 1.4;
  font-weight: 750;
  color: var(--blue);
}
h1 {
  margin: 0;
  font-size: clamp(62px, 7.2vw, 108px);
  line-height: 0.92;
  letter-spacing: -0.065em;
  font-weight: 580;
  max-width: 940px;
}
h1 span {
  display: block;
  color: #98a2b3;
  font-weight: 440;
}
.lede {
  font-size: clamp(24px, 2.25vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.03em;
  max-width: 780px;
  margin: 34px 0 18px;
}
.intro {
  max-width: 770px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  margin: 0;
}
.intro strong {
  color: var(--ink);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
.button {
  min-height: 50px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  gap: 24px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: #fff;
  font-size: 14px;
  font-weight: 650;
  transition: 0.18s ease;
}
.button:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  background: var(--pale);
}
.button.primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.button.primary:hover {
  background: #0b4fd6;
}
.portrait-wrap {
  align-self: center;
}
.portrait-wrap img {
  display: block;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: center 25%;
  filter: saturate(0.78) contrast(1.03);
  border-radius: 4px;
  box-shadow: 20px 20px 0 var(--pale);
  clip-path: inset(3.2% 0 0 0);
  margin-top: -3.2%;
}
.portrait-caption {
  margin-top: 30px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.signal-strip {
  background: #101828;
  color: #fff;
}
.signal-grid {
  min-height: 110px;
  display: grid;
  grid-template-columns: 0.7fr 0.85fr 0.7fr 1.55fr;
  align-items: center;
}
.signal-grid > div {
  padding: 22px 28px;
  border-left: 1px solid #344054;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.signal-grid > div:last-child {
  border-right: 1px solid #344054;
}
.signal-grid strong {
  font-size: 19px;
  letter-spacing: -0.02em;
}
.signal-grid span {
  font-size: 11px;
  color: #98a2b3;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.selected {
  padding: 118px 0 140px;
}
.section-heading {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 10%;
  align-items: end;
  margin-bottom: 70px;
}
.section-heading .eyebrow {
  grid-column: 1/-1;
  margin-bottom: 0;
}
.section-heading h2 {
  margin: 0;
  font-size: clamp(46px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.055em;
  font-weight: 560;
}
.section-heading > p:last-child {
  font-size: 18px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 520px;
  margin: 0;
}
.project-list {
  border-top: 1px solid var(--rule);
}
.project {
  display: grid;
  grid-template-columns: minmax(340px, 0.88fr) 1.12fr;
  gap: 8%;
  padding: 56px 0;
  border-bottom: 1px solid var(--rule);
  align-items: center;
}
.project-art {
  height: 320px;
  position: relative;
  overflow: hidden;
  border-radius: 7px;
  padding: 26px;
  color: #fff;
  background: #0a0a0a;
}
.art-number {
  font-size: 12px;
  letter-spacing: 0.12em;
  position: relative;
  z-index: 5;
}
.art-title {
  position: absolute;
  left: 26px;
  bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 11px;
  font-weight: 700;
  opacity: 0.7;
}
.grok-logo {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}
.grok-logo i {
  width: 118px;
  height: 118px;
  border: 17px solid #fff;
  border-radius: 50%;
  position: relative;
  transform: rotate(-12deg);
}
.grok-logo i:after {
  content: "";
  position: absolute;
  width: 30px;
  height: 152px;
  background: #0a0a0a;
  left: 28px;
  top: -35px;
  transform: rotate(42deg);
}
.grok-logo b {
  position: absolute;
  top: 65%;
  font-size: 24px;
  letter-spacing: -0.04em;
}
.gemini-logo {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.gemini-logo svg {
  width: 100px;
  height: 100px;
  color: #fff;
}
.gemini-logo b {
  font-size: 42px;
  letter-spacing: -0.045em;
}
.project-art.gemini {
  background: linear-gradient(135deg, #155eef, #8147d6 58%, #ec6b81);
}
.project-art.opengo {
  background: #d8b476;
  color: #17261d;
}
.go-board {
  position: absolute;
  width: 224px;
  height: 224px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0 27px,
      rgba(37, 29, 18, 0.55) 27px 29px
    ),
    repeating-linear-gradient(
      90deg,
      transparent 0 27px,
      rgba(37, 29, 18, 0.55) 27px 29px
    );
  border: 2px solid rgba(37, 29, 18, 0.65);
  box-shadow: 0 14px 30px rgba(45, 30, 10, 0.28);
}
.go-board i {
  position: absolute;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  box-shadow: 0 5px 7px rgba(0, 0, 0, 0.28);
}
.go-board i:nth-child(1) {
  background: #121212;
  left: 42px;
  top: 42px;
}
.go-board i:nth-child(2) {
  background: #f4f2e9;
  left: 98px;
  top: 70px;
}
.go-board i:nth-child(3) {
  background: #121212;
  left: 154px;
  top: 98px;
}
.go-board i:nth-child(4) {
  background: #f4f2e9;
  left: 70px;
  top: 154px;
}
.go-board i:nth-child(5) {
  background: #121212;
  left: 126px;
  top: 126px;
}
.go-board i:nth-child(6) {
  background: #f4f2e9;
  left: 154px;
  top: 42px;
}
.project-art.voxel {
  background: linear-gradient(145deg, #1d3b2c, #6d9d57);
}
.voxel-scene {
  position: absolute;
  left: 50%;
  top: 48%;
  width: 250px;
  height: 190px;
  transform: translate(-50%, -50%) rotateX(58deg) rotateZ(-35deg);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
}
.voxel-scene i {
  display: block;
  background: #8ec46b;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 5px 7px 0 #486c3b;
}
.voxel-scene i:nth-child(3n) {
  transform: translateZ(18px);
  background: #b1d07e;
}
.voxel-scene i:nth-child(5n) {
  background: #9c7451;
  box-shadow: 5px 7px 0 #614731;
}
.project-art.vision {
  background: linear-gradient(145deg, #eef0f3, #aab0bc);
  color: #101828;
}
.vision-logo {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.vision-logo svg {
  width: 75px;
  height: 75px;
}
.vision-logo b {
  font-size: 38px;
  letter-spacing: -0.055em;
}
.project-copy h3 {
  font-size: 47px;
  line-height: 1;
  margin: 0 0 22px;
  letter-spacing: -0.045em;
}
.project-copy > p:not(.eyebrow) {
  font-size: 18px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 610px;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}
.tags span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--rule);
  border-radius: 100px;
  padding: 8px 11px;
  background: #fff;
}
.experience {
  background: #fff;
  padding: 120px 0;
}
.section-heading.compact {
  display: block;
}
.section-heading.compact h2 {
  margin-top: 0;
}
.role-list {
  border-top: 1px solid var(--rule);
}
.role {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
}
.company-mark {
  height: 70px;
  border-radius: 5px;
  display: grid;
  place-items: center;
  font-weight: 740;
  letter-spacing: -0.03em;
  background: #101828;
  color: #fff;
}
.company-mark svg {
  width: 78px;
  height: 34px;
  max-width: 75%;
}
.company-mark.xai {
  background: #050505;
}
.xai-wordmark {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.08em;
}
.company-mark.google {
  background: #fff;
  color: #4285f4;
  border: 1px solid var(--rule);
}
.company-mark.google svg {
  width: 38px;
}
.company-mark.apple {
  background: #e7e9ed;
  color: #111;
}
.company-mark.apple svg {
  width: 34px;
}
.company-mark.uber-atg {
  background: #000;
}
.company-mark.uber-atg svg {
  width: 62px;
}
.company-mark.meta-fair {
  background: #0866ff;
}
.company-mark.meta-fair svg {
  width: 58px;
}
.company-mark.baidu-research {
  background: #2932e1;
}
.company-mark.baidu-research svg {
  width: 54px;
}
.role h3 {
  font-size: 20px;
  margin: 0 0 6px;
}
.role p {
  margin: 0 0 5px;
  font-size: 15px;
}
.role span,
.role time {
  color: var(--muted);
  font-size: 13px;
}
.education {
  margin-top: 82px;
  display: grid;
  grid-template-columns: 180px 1fr 1fr;
  gap: 36px;
  border-top: 1px solid var(--rule);
  padding-top: 30px;
}
.education div {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.education span {
  font-size: 13px;
  color: var(--muted);
}
.publications {
  padding: 125px 0 145px;
}
.publications-heading {
  align-items: start;
}
.publications-heading > div .eyebrow {
  margin-bottom: 24px;
}
.publications-heading a {
  color: var(--blue);
  font-weight: 650;
}
.publication-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--rule);
}
.publication-list li {
  display: grid;
  grid-template-columns: 44px 72px 1fr 160px;
  gap: 16px;
  align-items: baseline;
  padding: 17px 0;
  border-bottom: 1px solid var(--rule);
}
.pub-index {
  font-size: 10px;
  color: #98a2b3;
}
.pub-year {
  font-size: 12px;
  color: var(--blue);
  font-weight: 700;
}
.publication-list strong {
  font-size: 15px;
  line-height: 1.5;
}
.pub-venue {
  text-align: right;
  font-size: 14px;
  line-height: 1.35;
  color: var(--blue);
  font-weight: 750;
}
footer {
  background: #101828;
  color: #fff;
  padding: 96px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 12%;
}
.footer-grid h2 {
  font-size: clamp(54px, 6vw, 84px);
  line-height: 0.95;
  letter-spacing: -0.055em;
  font-weight: 560;
  margin: 0;
}
.footer-links {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #344054;
}
.footer-links a {
  padding: 18px 0;
  border-bottom: 1px solid #344054;
  color: #d0d5dd;
  transition: 0.18s;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 8px;
}
.copyright {
  grid-column: 1/-1;
  color: #667085;
  font-size: 11px;
  margin: 72px 0 0;
}
@media (max-width: 900px) {
  .shell {
    width: min(100% - 40px, 1320px);
  }
  .site-header {
    padding: 0 20px;
  }
  nav a:nth-child(2),
  nav a:nth-child(3) {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 54px;
  }
  .portrait-wrap {
    max-width: 380px;
  }
  .signal-grid {
    grid-template-columns: 1fr 1fr;
  }
  .signal-grid > div:last-child {
    border-right: 0;
  }
  .section-heading,
  .project {
    grid-template-columns: 1fr;
  }
  .project {
    gap: 32px;
  }
  .project-art {
    height: 280px;
  }
  .education {
    grid-template-columns: 1fr;
  }
  .education .eyebrow {
    margin-bottom: 0;
  }
  .publication-list li {
    grid-template-columns: 36px 52px 1fr;
  }
  .pub-venue {
    grid-column: 3;
    text-align: left;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-links {
    margin-top: 20px;
  }
}
@media (max-width: 560px) {
  nav {
    gap: 18px;
  }
  nav a {
    font-size: 12px;
  }
  .hero {
    min-height: auto;
    gap: 50px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .button {
    justify-content: space-between;
  }
  .signal-grid {
    grid-template-columns: 1fr;
  }
  .signal-grid > div {
    border-bottom: 1px solid #344054;
  }
  .selected,
  .experience,
  .publications {
    padding: 84px 0;
  }
  .project {
    padding: 38px 0;
  }
  .project-art {
    height: 230px;
  }
  .role {
    grid-template-columns: 90px 1fr;
  }
  .company-mark {
    height: 55px;
    font-size: 12px;
  }
  .role time {
    grid-column: 2;
  }
  .publication-list li {
    grid-template-columns: 32px 1fr;
  }
  .pub-year {
    grid-column: 1;
  }
  .publication-list strong {
    grid-column: 2;
  }
  .pub-venue {
    grid-column: 2;
  }
  .portrait-caption {
    flex-direction: column;
  }
  .footer-grid h2 {
    font-size: 52px;
  }
}
.gemini-logo img {
  width: 100px;
  height: 100px;
  filter: brightness(0) invert(1);
}
.vision-logo img {
  width: 75px;
  height: 75px;
}
.company-mark img {
  width: 78px;
  height: 34px;
  max-width: 75%;
}
.company-mark.google img {
  width: 38px;
  filter: invert(36%) sepia(94%) saturate(1917%) hue-rotate(205deg)
    brightness(99%);
}
.company-mark.apple img {
  width: 34px;
}
.company-mark.uber-atg img {
  width: 62px;
  filter: brightness(0) invert(1);
}
.company-mark.meta-fair img {
  width: 58px;
  filter: brightness(0) invert(1);
}
.company-mark.baidu-research img {
  width: 54px;
  filter: brightness(0) invert(1);
}
.company-mark .xai-wordmark {
  color: #fff;
  font-size: 28px;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}