:root {
  --paper: #f8f8f6;
  --ink: #1f211f;
  --muted: #666964;
  --line: #c9ccc6;
  --soft: #f8f8f6;
  --blue: #3558c8;
  --max: 1240px;
  --page-x: clamp(22px, 5vw, 64px);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: #e8ebee;
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 12px;
  padding: 9px 12px;
  transform: translateY(-160%);
  background: var(--ink);
  color: white;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
main,
.site-footer {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 0 var(--page-x);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.wordmark {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 15px;
  font-weight: 750;
  letter-spacing: -.01em;
}

.wordmark-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
}

.site-nav {
  display: flex;
  gap: clamp(16px, 2.2vw, 30px);
  align-items: center;
  color: #4b4b48;
  font-size: 13px;
  font-weight: 620;
}

.site-nav a {
  padding: 7px 0;
  border-bottom: 1px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: currentColor;
  color: var(--ink);
}

.site-nav .lang-switch {
  min-width: 32px;
  padding: 7px 8px;
  border: 1px solid var(--line);
  text-align: center;
}

.site-nav .nav-github {
  color: var(--blue);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(270px, .55fr);
  gap: clamp(60px, 9vw, 130px);
  align-items: end;
  min-height: 540px;
  padding: clamp(82px, 10vw, 140px) var(--page-x) 82px;
  border-bottom: 5px solid var(--blue);
  background: #fff;
}

.hero-copy {
  max-width: 820px;
}

.eyebrow,
.section-index,
.profile-label,
.resume-label,
.project-topline,
.archive-kicker {
  margin: 0;
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 750;
  line-height: 1.5;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.about-grid h2 {
  font-family: inherit;
  font-weight: 720;
}

.hero h1 {
  max-width: 820px;
  margin: 27px 0 32px;
  font-size: clamp(56px, 6.25vw, 82px);
  line-height: 1.02;
  letter-spacing: -.055em;
  text-wrap: balance;
}

.hero h1 span {
  color: var(--blue);
  white-space: nowrap;
}

.hero-intro {
  max-width: 690px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 1.65vw, 22px);
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  gap: 18px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
  font-weight: 700;
}

.button-primary {
  color: var(--blue);
}

.button:hover span,
.button:focus-visible span {
  transform: translate(2px, 2px);
}

.button span {
  transition: transform 160ms ease;
}

.profile-card {
  align-self: stretch;
  padding: 0 0 2px 30px;
  border-left: 1px solid var(--line);
}

.profile-card h2 {
  margin: 64px 0 7px;
  font-family: inherit;
  font-size: 30px;
  font-weight: 730;
  letter-spacing: -.035em;
}

.profile-role {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.profile-status {
  margin: 35px 0;
  color: #40403d;
  font-size: 14px;
  line-height: 1.7;
}

.profile-status span {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin: 0 8px 1px 0;
  border-radius: 50%;
  background: #239a66;
}

.profile-meta {
  display: flex;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.profile-meta a {
  color: var(--blue);
}

.section {
  padding: clamp(78px, 9vw, 118px) var(--page-x);
  border-top: 1px solid var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, .55fr);
  gap: clamp(50px, 9vw, 130px);
  align-items: end;
  margin-bottom: 48px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--ink);
}

.section-heading h2,
.about-grid h2 {
  max-width: 760px;
  margin: 16px 0 0;
  font-size: clamp(44px, 4.8vw, 62px);
  line-height: 1.08;
  letter-spacing: -.045em;
  text-wrap: balance;
}

.section-heading > p,
.resume-heading-actions p {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.profile-section {
  border-top: 0;
  background: #fff;
}

.section-index {
  display: inline-flex;
  padding: 5px 8px;
  background: var(--blue);
  color: #fff;
  letter-spacing: .08em;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr .6fr;
  gap: clamp(60px, 10vw, 150px);
}

.intro-statement p {
  max-width: 760px;
  margin: 0 0 24px;
  font-family: inherit;
  color: #353531;
  font-size: clamp(20px, 2.15vw, 26px);
  line-height: 1.68;
}

.intro-statement strong {
  color: var(--ink);
  font-weight: 650;
}

.quick-facts {
  margin: 0;
  border-top: 1px solid var(--ink);
}

.quick-facts > div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.quick-facts dt {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.quick-facts dd {
  margin: 0;
  font-size: 14px;
  font-weight: 540;
  line-height: 1.5;
}

.quick-facts a {
  color: var(--blue);
}

.resume-section {
  background: #eef1f5;
}

.resume-grid {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  column-gap: clamp(44px, 7vw, 100px);
  row-gap: 58px;
}

.resume-block {
  padding-top: 18px;
  border-top: 1px solid var(--ink);
}

.resume-block h3 {
  margin: 24px 0 7px;
  font-family: inherit;
  font-size: 30px;
  font-weight: 720;
  line-height: 1.05;
  letter-spacing: -.035em;
}

.education-timeline {
  display: grid;
  gap: 0;
  margin-top: 28px;
}

.education-timeline > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.education-timeline span,
.experience-heading > span {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .06em;
}

.education-timeline strong {
  font-size: 15px;
  font-weight: 680;
}

.education-timeline small {
  color: var(--muted);
  font-size: 12px;
}

.resume-focus ul,
.resume-experience > ul,
.resume-honors ol {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.resume-focus li {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 22px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.resume-focus strong {
  font-size: 14px;
  font-weight: 680;
}

.resume-focus span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.resume-experience,
.resume-evidence {
  grid-column: 1 / -1;
}

.experience-heading,
.experience-title {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

.experience-title {
  align-items: end;
  margin-top: 24px;
  padding-bottom: 21px;
  border-bottom: 1px solid var(--line);
}

.experience-title h3 {
  margin: 0 0 6px;
}

.experience-title p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.resume-experience > ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.resume-experience > ul li {
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: #494946;
  font-size: 13px;
  line-height: 1.78;
}

.resume-honors li {
  display: grid;
  gap: 5px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.resume-honors li span {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
}

.resume-honors li strong {
  font-size: 13px;
  font-weight: 650;
  line-height: 1.55;
}

.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 23px;
}

.skill-cloud span {
  margin: 0 10px 10px 0;
  padding: 0 0 4px;
  border-bottom: 1px solid var(--line);
  color: #41413e;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 600;
}

.resume-evidence {
  display: grid;
  grid-template-columns: 150px 1fr 1fr;
  gap: 30px;
}

.resume-evidence a {
  display: flex;
  min-height: 130px;
  flex-direction: column;
  padding-left: 22px;
  border-left: 1px solid var(--line);
}

.resume-evidence a > span {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .06em;
}

.resume-evidence strong {
  margin-top: auto;
  font-family: inherit;
  font-size: 23px;
  font-weight: 710;
  letter-spacing: -.025em;
}

.resume-evidence small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
}

.resume-evidence a:hover strong,
.resume-evidence a:focus-visible strong {
  color: var(--blue);
}

.work-section {
  background: #fff;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
}

.project-card {
  display: flex;
  min-height: 390px;
  flex-direction: column;
  padding: 22px 28px 28px 0;
  border-bottom: 1px solid var(--line);
}

.project-card + .project-card {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.project-topline {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
}

.project-arrow {
  color: var(--ink);
  font-size: 17px;
  transition: transform 160ms ease;
}

.project-card:hover .project-arrow,
.project-card:focus-visible .project-arrow {
  transform: translate(3px, -3px);
  color: var(--blue);
}

.project-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding-top: 78px;
}

.project-copy h3 {
  margin: 0 0 19px;
  font-family: inherit;
  font-size: clamp(30px, 3vw, 38px);
  font-weight: 720;
  line-height: 1.04;
  letter-spacing: -.045em;
}

.project-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.project-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: auto 0 0;
  padding: 30px 0 0;
  list-style: none;
}

.project-copy li {
  color: #555550;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  font-weight: 600;
}

.all-projects {
  display: flex;
  justify-content: space-between;
  margin-top: 28px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ink);
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.research-section {
  background: #eef1f5;
}

.research-layout {
  display: grid;
  grid-template-columns: 1.15fr .75fr;
  gap: clamp(50px, 8vw, 110px);
  border-top: 1px solid var(--ink);
}

.research-feature {
  display: flex;
  min-height: 430px;
  flex-direction: column;
  padding-top: 22px;
}

.research-meta,
.research-stream article > div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .06em;
}

.research-feature h3 {
  max-width: 680px;
  margin: 72px 0 25px;
  font-family: inherit;
  font-size: clamp(36px, 3.9vw, 50px);
  font-weight: 720;
  line-height: 1.16;
  letter-spacing: -.045em;
  text-wrap: balance;
}

.research-feature p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.82;
}

.research-feature > a {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--blue);
  color: var(--blue);
  font-size: 13px;
  font-weight: 680;
}

.research-stream article {
  min-height: 215px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.research-stream h3 {
  margin: 30px 0 12px;
  font-family: inherit;
  font-size: 23px;
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -.02em;
}

.research-stream p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.72;
}

.research-stream small,
.research-policy {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  line-height: 1.65;
}

.research-policy {
  margin: 38px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.notes-section {
  background: #fff;
  color: var(--ink);
}

.notes-section .section-heading > p {
  color: var(--muted);
}

.archive-card {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 50px;
  align-items: end;
  min-height: 250px;
  padding: 30px 0;
  border-block: 1px solid var(--line);
}

.archive-card h3 {
  max-width: 700px;
  margin: 30px 0 0;
  font-family: inherit;
  font-size: clamp(38px, 4.2vw, 54px);
  font-weight: 720;
  line-height: 1.1;
  letter-spacing: -.035em;
  text-wrap: balance;
}

.archive-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  justify-content: flex-end;
  align-items: center;
  color: var(--muted);
  font-size: 11px;
}

.archive-meta strong {
  margin-left: 18px;
  color: var(--ink);
  font-size: 25px;
}

.about-section {
  background: #eef1f5;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr .65fr;
  gap: clamp(60px, 10vw, 150px);
  margin-top: 16px;
}

.about-copy {
  padding-top: 8px;
}

.about-copy p {
  margin: 0 0 21px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.about-links {
  display: flex;
  gap: 24px;
  margin-top: 35px;
}

.about-links a {
  padding-bottom: 5px;
  border-bottom: 1px solid currentColor;
  color: var(--blue);
  font-size: 13px;
  font-weight: 680;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 20px;
  align-items: center;
  min-height: 100px;
  padding: 0 var(--page-x);
  border-top: 1px solid var(--ink);
  background: #fff;
  color: var(--muted);
  font-size: 11px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid rgba(49, 91, 232, .45);
  outline-offset: 4px;
}

@media (max-width: 980px) {
  .hero,
  .section-heading,
  .intro-grid,
  .research-layout,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
    gap: 60px;
  }

  .profile-card {
    padding: 24px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .profile-card h2 {
    margin-top: 34px;
  }

  .section-heading {
    gap: 30px;
  }

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

  .resume-experience,
  .resume-evidence {
    grid-column: auto;
  }

  .resume-experience > ul {
    grid-template-columns: 1fr;
  }

  .resume-evidence {
    grid-template-columns: 1fr 1fr;
  }

  .resume-evidence .resume-label {
    grid-column: 1 / -1;
  }

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

  .project-card,
  .project-card + .project-card {
    min-height: 300px;
    padding: 22px 0 25px;
    border-left: 0;
  }

  .project-copy {
    padding-top: 48px;
  }
}

@media (max-width: 900px) {
  .site-nav a:not(.nav-github):not(.lang-switch):not([href="#resume"]) {
    display: none;
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 68px;
  }

  .site-nav .nav-github {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 70px;
    padding-bottom: 65px;
  }

  .hero h1 {
    font-size: clamp(48px, 14vw, 62px);
    line-height: 1.04;
  }

  .hero-actions {
    gap: 18px;
  }

  .section {
    padding-block: 72px;
  }

  .section-heading h2,
  .about-grid h2 {
    font-size: clamp(38px, 11vw, 46px);
    line-height: 1.1;
  }

  .quick-facts > div,
  .resume-focus li {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .experience-title {
    align-items: flex-start;
    flex-direction: column;
  }

  .resume-evidence {
    grid-template-columns: 1fr;
  }

  .resume-evidence .resume-label {
    grid-column: auto;
  }

  .resume-evidence a {
    min-height: 110px;
    padding: 18px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .research-feature {
    min-height: 500px;
  }

  .archive-card {
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .archive-meta {
    justify-content: flex-start;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-block: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
  }
}