:root {
  --ink: #122033;
  --muted: #5f6f83;
  --soft: #8794a6;
  --line: #dfe7f0;
  --line-strong: #cbd7e5;
  --paper: #ffffff;
  --canvas: #f5f8fc;
  --accent: #2563eb;
  --accent-dark: #1849b9;
  --accent-soft: #eaf1ff;
  --cyan: #0891b2;
  --warm: #fff8eb;
  --shadow: 0 18px 48px rgba(29, 55, 88, 0.09);
  --shadow-hover: 0 24px 64px rgba(29, 55, 88, 0.14);
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 4%, rgba(37, 99, 235, 0.09), transparent 28rem),
    radial-gradient(circle at 90% 22%, rgba(8, 145, 178, 0.07), transparent 26rem),
    var(--canvas);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-dark);
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 10px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(203, 215, 229, 0.78);
  background: rgba(245, 248, 252, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  color: var(--ink);
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 12px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  transition: color 160ms ease, background 160ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}

main {
  overflow: hidden;
}

.hero {
  position: relative;
  padding: 76px 0 56px;
}

.hero::before {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  top: -170px;
  right: -150px;
  border: 1px solid rgba(37, 99, 235, 0.13);
  border-radius: 50%;
  box-shadow: 0 0 0 54px rgba(37, 99, 235, 0.025), 0 0 0 108px rgba(37, 99, 235, 0.018);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  align-items: center;
  gap: clamp(46px, 7vw, 86px);
}

.profile-visual {
  position: relative;
  min-height: 340px;
  display: grid;
  place-items: center;
}

.profile-visual::before {
  content: "";
  position: absolute;
  inset: 24px 16px 10px;
  border-radius: 42% 58% 56% 44% / 38% 38% 62% 62%;
  background: linear-gradient(145deg, #dbe9ff 5%, #c4f0f2 92%);
  transform: rotate(-5deg);
}

.avatar-frame {
  position: relative;
  width: 252px;
  aspect-ratio: 1;
  padding: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.avatar-frame img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 42%;
}

.location-pill {
  position: absolute;
  right: -4px;
  bottom: 25px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border: 1px solid rgba(203, 215, 229, 0.9);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 28px rgba(29, 55, 88, 0.11);
  font-size: 13px;
  font-weight: 650;
}

.location-pill::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 780;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(44px, 6vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.chinese-name {
  display: inline-block;
  margin-left: 12px;
  color: var(--soft);
  font-size: 0.42em;
  font-weight: 560;
  letter-spacing: 0.02em;
  vertical-align: 0.35em;
}

.bio {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
}

.hero h1 + .bio {
  margin-top: 24px;
}

.bio + .bio {
  margin-top: 8px;
}

.bio a {
  font-weight: 650;
}

.action-row,
.pub-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.action-row {
  margin-top: 26px;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  color: #32445a;
  background: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  transition: transform 160ms ease, box-shadow 160ms ease, border 160ms ease, background 160ms ease;
}

.button svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.button:hover,
.button:focus-visible {
  color: var(--accent);
  border-color: #9fbbf5;
  background: #fff;
  box-shadow: 0 9px 22px rgba(37, 99, 235, 0.11);
  transform: translateY(-2px);
  outline: none;
}

.button.primary {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 9px 22px rgba(37, 99, 235, 0.2);
}

.button.primary:hover,
.button.primary:focus-visible {
  color: #fff;
  border-color: var(--accent-dark);
  background: var(--accent-dark);
}

.interests {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.interests li {
  padding: 7px 11px;
  border: 1px solid #d6e4fa;
  border-radius: 999px;
  color: #3e5b81;
  background: rgba(234, 241, 255, 0.66);
  font-size: 12px;
  font-weight: 700;
}

.section {
  padding: 74px 0;
}

.section-tint {
  border-top: 1px solid rgba(203, 215, 229, 0.62);
  border-bottom: 1px solid rgba(203, 215, 229, 0.62);
  background: rgba(255, 255, 255, 0.52);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 470px);
  align-items: end;
  gap: 36px;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin: 2px 0 0;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.section-heading > p {
  margin: 0 0 3px;
  color: var(--muted);
  font-size: 15px;
}

.publication-list {
  display: grid;
  gap: 20px;
}

.pub-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, 39%) minmax(0, 1fr);
  min-height: 248px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  box-shadow: 0 8px 30px rgba(29, 55, 88, 0.045);
  overflow: hidden;
  transition: transform 200ms ease, border 200ms ease, box-shadow 200ms ease;
}

.pub-card:hover {
  border-color: #bfd0e4;
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.pub-visual {
  position: relative;
  min-height: 248px;
  display: grid;
  place-items: center;
  padding: 24px;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(234, 241, 255, 0.88), rgba(241, 248, 250, 0.8)),
    #f4f7fb;
  overflow: hidden;
}

.pub-visual::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  right: -50px;
  bottom: -55px;
  border: 22px solid rgba(37, 99, 235, 0.045);
  border-radius: 50%;
}

.pub-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-height: 190px;
  object-fit: contain;
  filter: saturate(0.96) contrast(1.02);
  transition: transform 300ms ease;
}

.pub-card:hover .pub-visual img {
  transform: scale(1.025);
}

.pub-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 25px 28px 24px;
}

.pub-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.venue {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border-radius: 7px;
  color: #1749a5;
  background: var(--accent-soft);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}

.venue.latest {
  color: #08758c;
  background: #e3f6f8;
}

.pub-year {
  color: var(--soft);
  font-size: 12px;
  font-weight: 700;
}

.pub-content h3 {
  margin: 0;
  color: #17243a;
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.38;
  letter-spacing: -0.018em;
}

.authors {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.58;
}

.authors strong {
  color: var(--ink);
  font-weight: 760;
}

.contribution {
  margin: 6px 0 0;
  color: var(--soft);
  font-size: 12px;
  font-weight: 650;
}

.pub-actions {
  margin-top: auto;
  padding-top: 16px;
}

.pub-actions .button {
  min-height: 34px;
  padding: 7px 11px;
  border-radius: 9px;
  font-size: 12px;
}

.pub-actions .button svg {
  width: 14px;
  height: 14px;
}

.playground-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.fun-card {
  min-width: 0;
  display: grid;
  grid-template-columns: 44% minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: 0 8px 26px rgba(29, 55, 88, 0.05);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.fun-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.fun-image {
  min-height: 214px;
  overflow: hidden;
  background: var(--warm);
}

.fun-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fun-card:nth-child(2) .fun-image img {
  object-fit: contain;
  padding: 20px;
}

.fun-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 24px 22px;
}

.fun-label {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.fun-content h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.3;
}

.fun-content p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.fun-content .pub-actions {
  padding-top: 18px;
}

.career-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  grid-template-areas:
    "experience education"
    "experience awards";
  gap: 22px;
}

.info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: 0 8px 26px rgba(29, 55, 88, 0.045);
  padding: 29px;
}

.info-card.experience { grid-area: experience; }
.info-card.education { grid-area: education; }
.info-card.awards { grid-area: awards; }

.info-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.info-card h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 23px;
  bottom: 28px;
  left: 40px;
  width: 1px;
  background: var(--line-strong);
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 15px;
  padding: 0 0 24px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.org-logo {
  position: relative;
  z-index: 1;
  width: 46px;
  height: 46px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  box-shadow: 0 5px 14px rgba(29, 55, 88, 0.08);
  object-fit: contain;
}

.timeline .org-logo {
  width: 82px;
  padding: 7px 9px;
}

.timeline-body {
  min-width: 0;
  padding-top: 1px;
}

.time {
  display: block;
  margin-bottom: 3px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.035em;
}

.timeline strong {
  display: block;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.45;
}

.timeline p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

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

.clean-list li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  font-size: 14px;
}

.clean-list li::before {
  content: "";
  position: absolute;
  top: 0.7em;
  left: 1px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.clean-list strong {
  color: var(--ink);
}

.education-list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  align-items: start;
  gap: 13px;
  padding-left: 0;
}

.education-list li::before {
  display: none;
}

.education-list .org-logo {
  margin-top: 1px;
}


.site-footer {
  padding: 34px 0 44px;
  border-top: 1px solid rgba(203, 215, 229, 0.72);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 13px;
}

.footer-inner p {
  margin: 0;
}

.back-to-top {
  color: var(--muted);
  font-weight: 700;
}

.back-to-top:hover {
  color: var(--accent);
}

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .hero {
    padding-top: 58px;
  }

  .hero-grid {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 38px;
  }

  .profile-visual {
    min-height: 290px;
  }

  .avatar-frame {
    width: 205px;
  }

  .location-pill {
    right: -2px;
  }

  .pub-card {
    grid-template-columns: 34% minmax(0, 1fr);
  }

  .pub-visual {
    padding: 18px;
  }

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

  .fun-card {
    grid-template-columns: 235px minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .nav {
    min-height: 62px;
    gap: 10px;
  }

  .nav-links {
    gap: 0;
  }

  .nav-links a {
    padding: 7px 8px;
    font-size: 12px;
  }

  .hero {
    padding: 42px 0 36px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .profile-visual {
    min-height: 232px;
    justify-content: start;
  }

  .profile-visual::before {
    width: 230px;
    inset: 8px auto 2px 8px;
  }

  .avatar-frame {
    width: 200px;
    margin-left: 20px;
  }

  .location-pill {
    right: auto;
    left: 165px;
    bottom: 12px;
    white-space: nowrap;
  }

  .hero h1 {
    font-size: clamp(41px, 14vw, 58px);
  }

  .chinese-name {
    display: block;
    margin: 9px 0 0;
    font-size: 0.4em;
    vertical-align: initial;
  }

  .section {
    padding: 56px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-bottom: 26px;
  }

  .section-heading > p {
    max-width: 590px;
  }

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

  .pub-visual {
    min-height: 210px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .pub-visual img {
    max-height: 170px;
  }

  .pub-content {
    padding: 22px 20px 21px;
  }

  .pub-actions {
    margin-top: 0;
  }

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

  .fun-image {
    min-height: 220px;
    max-height: 290px;
  }

  .career-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "experience"
      "education"
      "awards";
  }
}

@media (max-width: 430px) {
  .nav-links li:nth-child(3) {
    display: none;
  }

  .action-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .action-row .button {
    width: 100%;
  }

  .profile-visual {
    justify-content: center;
  }

  .profile-visual::before {
    left: 50%;
    transform: translateX(-50%) rotate(-5deg);
  }

  .avatar-frame {
    margin-left: 0;
  }

  .location-pill {
    left: 50%;
    transform: translateX(20px);
  }

  .info-card {
    padding: 24px 20px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}