:root {
  --bg: #3f3f3f;
  --bg-deep: #383838;
  --panel: #464646;
  --panel-soft: #434343;
  --text: #f2f2f2;
  --muted: #c7c7c7;
  --dim: #a9a9a9;
  --line: rgba(255, 255, 255, 0.14);
  --line-soft: rgba(255, 255, 255, 0.08);
  --accent: #61b7d6;
  --accent-soft: rgba(97, 183, 214, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.62;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(97, 183, 214, 0.35);
}

a:hover {
  color: #8ed7ef;
  border-bottom-color: #8ed7ef;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(63, 63, 63, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-soft);
}

.nav {
  width: min(1120px, calc(100% - 44px));
  min-height: 58px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 700;
  border-bottom: 0;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 21px;
  font-size: 0.88rem;
}

.nav-links a {
  color: var(--muted);
  border-bottom: 0;
}

.nav-links a:hover {
  color: var(--text);
}

main {
  width: min(1120px, calc(100% - 44px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 54px;
  align-items: start;
  padding: 46px 0 36px;
}

.profile {
  position: sticky;
  top: 78px;
  padding: 0;
}

.portrait {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: 58% 34%;
  border-radius: 6px;
  border: 1px solid var(--line);
  filter: saturate(0.92) contrast(1.02);
}

.profile h1 {
  margin: 19px 0 7px;
  color: #ffffff;
  font-size: 1.62rem;
  line-height: 1.12;
  font-weight: 760;
}

.role,
.affiliation {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.affiliation {
  color: var(--dim);
  margin-top: 4px;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 13px;
  margin-top: 19px;
}

.profile-links a,
.pub-links a {
  color: var(--accent);
  border-bottom: 1px solid rgba(97, 183, 214, 0.35);
  font-size: 0.88rem;
  line-height: 1.2;
}

.intro {
  padding-top: 2px;
}

.intro::before {
  content: "Welcome to my homepage.";
  display: block;
  margin: 0 0 24px;
  color: #ffffff;
  font-size: 1.34rem;
  font-weight: 620;
}

.intro p {
  max-width: 830px;
  margin: 0 0 24px;
  color: #f0f0f0;
  font-size: 1.08rem;
  line-height: 1.75;
  text-align: left;
}

.eyebrow,
.intro h2,
.quick-stats {
  display: none;
}

.section {
  padding: 36px 0;
  border-top: 1px solid var(--line-soft);
}

.section h2 {
  margin: 0 0 20px;
  color: #ffffff;
  font-size: 1.34rem;
  line-height: 1.2;
  font-weight: 720;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 22px;
}

.section-head h2 {
  margin: 0;
}

.section-head p {
  margin: 0;
  color: var(--dim);
  font-size: 0.95rem;
}

.timeline {
  border-left: 2px solid rgba(97, 183, 214, 0.56);
  padding-left: 20px;
}

.timeline article {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 22px;
  align-items: baseline;
}

.timeline time {
  color: var(--accent);
  font-weight: 700;
}

.timeline p {
  margin: 0;
  color: var(--text);
}

.education-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.education-list article {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 28px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line-soft);
}

.edu-date {
  color: var(--accent);
  font-size: 0.96rem;
  font-weight: 700;
}

.education-list h3 {
  margin: 0 0 5px;
  color: #ffffff;
  font-size: 1rem;
  line-height: 1.35;
}

.education-list p {
  margin: 2px 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.publication-list {
  display: grid;
  gap: 12px;
}

.publication {
  padding: 15px 0 17px;
  border-bottom: 1px solid var(--line-soft);
}

.publication:first-child {
  border-top: 1px solid var(--line-soft);
}

.publication.highlight {
  padding-left: 18px;
  border-left: 2px solid rgba(97, 183, 214, 0.58);
}

.publication h3 {
  margin: 0 0 8px;
  color: #ffffff;
  font-size: 0.98rem;
  line-height: 1.42;
  font-weight: 680;
}

.publication p {
  margin: 4px 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 14px;
  margin-top: 10px;
}

.contact-card {
  padding: 0;
  color: var(--muted);
}

.contact-card p {
  margin: 0 0 8px;
}

.visitor-map {
  padding-bottom: 48px;
}

.visitor-map-frame {
  width: 560px;
  max-width: 100%;
  min-height: 310px;
  overflow-x: auto;
  overflow-y: hidden;
  background: #ffffff;
}

.visitor-map-frame script {
  display: block;
}

footer {
  width: min(1120px, calc(100% - 44px));
  margin: 0 auto;
  padding: 28px 0 48px;
  color: var(--dim);
  border-top: 1px solid var(--line-soft);
  font-size: 0.84rem;
}

footer p {
  margin: 0;
}

@media (max-width: 900px) {
  body {
    font-size: 15px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 15px 0;
    gap: 10px;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 12px 18px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 34px;
  }

  .profile {
    position: static;
    display: grid;
    grid-template-columns: 146px minmax(0, 1fr);
    column-gap: 20px;
    align-items: center;
  }

  .portrait {
    grid-row: span 4;
  }

  .profile h1 {
    margin-top: 0;
  }

  .profile-links {
    grid-column: 1 / -1;
  }

  .intro p {
    font-size: 1.02rem;
  }

  .timeline article,
  .education-list article {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .section-head {
    display: block;
  }
}

@media (max-width: 560px) {
  main,
  .nav,
  footer {
    width: min(100% - 28px, 1120px);
  }

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

  .portrait {
    width: min(210px, 100%);
  }

  .intro::before {
    font-size: 1.18rem;
  }
}