:root {
  --site-ink: #23313b;
  --site-muted: #667784;
  --site-accent: #126a8b;
  --site-accent-soft: #eaf4f7;
  --site-line: #dbe4e8;
  --site-card: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--site-ink);
  background: #fbfcfc;
}

.navigation-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: 0.9em;
  padding-bottom: 0.9em;
  background: rgba(251, 252, 252, 0.96);
  border-bottom: 1px solid rgba(219, 228, 232, 0.9);
  backdrop-filter: blur(10px);
}

.navigation-wrapper::after {
  display: table;
  clear: both;
  content: "";
}

.site-name a {
  color: var(--site-ink);
  letter-spacing: 0.03em;
}

.site-name,
.top-navigation {
  margin-bottom: 0;
}

.navigation-inner {
  display: flex;
  gap: 1em;
  align-items: center;
}

.top-navigation ul {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-wrap: wrap;
  gap: 0.35em 1em;
  align-items: center;
}

.top-navigation li {
  margin-right: 0;
}

.top-navigation a {
  color: var(--site-muted);
}

.top-navigation a:hover,
.top-navigation a.top-navigation-current {
  color: var(--site-accent);
}

.language-switch {
  display: inline-flex;
  flex: none;
  align-items: stretch;
  overflow: hidden;
  text-transform: none;
  background: #ffffff;
  border: 1px solid #cbd7df;
  border-radius: 9px;
  box-shadow: 0 2px 8px rgba(31, 54, 67, 0.06);
}

.language-switch a,
.language-switch a:hover {
  display: flex;
  min-width: 2.85em;
  min-height: 2.15em;
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  padding: 0.25em 0.65em;
  color: var(--site-muted);
  line-height: 1;
  text-decoration: none;
  border: 0;
}

.language-switch a + a {
  border-left: 1px solid #cbd7df;
}

.language-switch a.is-active,
.language-switch a.is-active:hover {
  color: #ffffff;
  background: #174d70;
}

.language-switch a:focus-visible {
  position: relative;
  z-index: 1;
  outline: 2px solid var(--site-accent);
  outline-offset: -2px;
}

html[lang="zh-CN"] body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

html[lang="zh-CN"] .site-name,
html[lang="zh-CN"] .top-navigation,
html[lang="zh-CN"] .timeline-date,
html[lang="zh-CN"] .award-year,
html[lang="zh-CN"] .publication-stage strong {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

html[lang="zh-CN"] .article-wrap {
  line-height: 1.8;
}

.article-wrap {
  font-size: 0.98rem;
  line-height: 1.7;
}

.article-wrap h1 {
  margin-bottom: 0.75em;
  color: var(--site-ink);
}

.article-wrap h2 {
  margin-top: 2.25em;
  margin-bottom: 0.9em;
  padding-bottom: 0.35em;
  color: var(--site-ink);
  border-bottom: 2px solid var(--site-accent);
}

.article-wrap h3 {
  margin-top: 0.8em;
  margin-bottom: 0.45em;
  color: var(--site-ink);
}

.article-wrap a {
  color: var(--site-accent);
}

.section-anchor {
  position: relative;
  top: -0.25em;
  scroll-margin-top: 6.5em;
}

.article-wrap h1[id],
.article-wrap h2[id],
.article-wrap h3[id] {
  scroll-margin-top: 6.5em;
}

.article-author-top img.bio-photo {
  width: 100%;
  max-width: 150px;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center top;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(31, 54, 67, 0.14);
}

.article-author-top p {
  font-style: normal;
  line-height: 1.45;
}

.article-author-top .author-link-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  margin-right: 0.18em;
  object-fit: contain;
  vertical-align: -0.12em;
  border: 0;
  box-shadow: none;
}

.hero-intro {
  padding: 1.1em 1.35em;
  background: linear-gradient(135deg, #f2f8fa, #ffffff);
  border-left: 4px solid var(--site-accent);
  border-radius: 0 10px 10px 0;
}

.hero-intro p:last-child {
  margin-bottom: 0;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65em;
  margin: 1.25em 0 0.5em;
}

.quick-links .site-button,
.paper-links a {
  display: inline-block;
  padding: 0.45em 0.8em;
  color: #ffffff;
  font-family: "PT Sans Narrow", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--site-accent);
  border: 1px solid var(--site-accent);
  border-radius: 6px;
}

.quick-links .site-button:hover,
.paper-links a:hover {
  color: #ffffff;
  background: #0c5671;
  border-color: #0c5671;
}

.quick-links .site-button-secondary {
  color: var(--site-accent);
  background: transparent;
}

.research-track {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8em;
  margin: 1.2em 0;
}

.research-track > div {
  position: relative;
  min-height: 8em;
  padding: 1em;
  background: var(--site-card);
  border: 1px solid var(--site-line);
  border-radius: 10px;
}

.research-track span {
  display: block;
  margin-bottom: 0.5em;
  color: var(--site-accent);
  font-family: "PT Sans Narrow", sans-serif;
  font-weight: 700;
}

.research-track strong {
  font-size: 1.05em;
}

.research-track p {
  margin: 0.35em 0 0;
  color: var(--site-muted);
  line-height: 1.5;
}

.news-list {
  padding-left: 1.2em;
}

.news-list li {
  margin-bottom: 0.55em;
}

.timeline,
.experience-list,
.awards-list {
  border-left: 2px solid var(--site-line);
}

.timeline-item,
.experience-item,
.award-item {
  position: relative;
  margin-bottom: 1.15em;
  padding: 0.15em 0 0.15em 1.3em;
}

.timeline-item::before,
.experience-item::before,
.award-item::before {
  position: absolute;
  top: 0.55em;
  left: -0.38em;
  width: 0.65em;
  height: 0.65em;
  content: "";
  background: var(--site-accent);
  border: 2px solid #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--site-accent);
}

.timeline-item {
  display: grid;
  grid-template-columns: 8em 1fr;
  gap: 0.7em;
}

.timeline-item.education-item {
  grid-template-columns: 8em minmax(0, 1fr) 90px;
  align-items: center;
}

.education-copy {
  min-width: 0;
}

.education-logo {
  box-sizing: border-box;
  display: flex;
  width: 84px;
  height: 84px;
  align-items: center;
  justify-content: center;
  justify-self: end;
  padding: 6px;
  background: #ffffff;
  border: 1px solid var(--site-line);
  border-radius: 10px;
}

.education-logo img {
  display: block;
  width: auto;
  max-width: 72px;
  height: auto;
  max-height: 72px;
  object-fit: contain;
  border: 0;
}

.timeline-date,
.award-year {
  color: var(--site-accent);
  font-family: "PT Sans Narrow", sans-serif;
  font-weight: 700;
}

.compact-experience p {
  margin: 0;
  padding: 0.7em 0;
  border-bottom: 1px solid var(--site-line);
}

.experience-grid {
  display: grid;
  gap: 1em;
  margin: 1em 0 1.8em;
}

.experience-card {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 1.15em;
  align-items: center;
  padding: 1em;
  background: var(--site-card);
  border: 1px solid var(--site-line);
  border-radius: 12px;
  box-shadow: 0 5px 16px rgba(31, 54, 67, 0.05);
}

.experience-logo {
  box-sizing: border-box;
  display: flex;
  flex: 0 0 100px;
  width: 100px;
  height: 100px;
  align-items: center;
  justify-content: center;
  padding: 8px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--site-line);
  border-radius: 10px;
}

.experience-logo img {
  display: block;
  width: auto;
  max-width: 84px;
  height: auto;
  max-height: 84px;
  object-fit: contain;
  border: 0;
}

.brand-logo {
  flex-direction: column;
  gap: 0.15em;
  text-align: center;
}

.brand-logo strong {
  font-family: "PT Sans Narrow", sans-serif;
  font-size: 1.25em;
  line-height: 1;
}

.brand-logo span {
  font-family: "PT Sans Narrow", sans-serif;
  font-size: 0.68em;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand-jiukun {
  color: #1d315f;
  background: #f5f7fb;
}

.brand-tencent {
  color: #1768b2;
  background: #f1f7fc;
}

.brand-fineredline {
  color: #b3262d;
  background: #fff5f5;
}

.experience-copy {
  min-width: 0;
}

.page-intro {
  margin-bottom: 1.6em;
  color: var(--site-muted);
  font-size: 1.02em;
}

.publication-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 10em;
  gap: 1em;
  margin: 0 0 1.6em;
  padding: 1em;
  background: var(--site-card);
  border: 1px solid var(--site-line);
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(31, 54, 67, 0.06);
}

.publication-main {
  display: grid;
  grid-template-columns: minmax(11em, 32%) minmax(0, 1fr);
  gap: 1.15em;
  min-width: 0;
}

.publication-image {
  display: flex;
  align-items: center;
}

.publication-image img {
  width: 100%;
  max-height: 14em;
  object-fit: contain;
  border: 0;
}

.publication-content h2 {
  margin: 0.55em 0 0.4em;
  padding: 0;
  font-size: 1.15em;
  line-height: 1.25;
  border: 0;
}

.publication-content p {
  margin: 0.5em 0;
  line-height: 1.5;
}

.publication-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45em;
}

.publication-meta span {
  display: inline-block;
  padding: 0.2em 0.55em;
  color: var(--site-accent);
  font-family: "PT Sans Narrow", sans-serif;
  font-size: 0.84em;
  font-weight: 700;
  background: var(--site-accent-soft);
  border-radius: 999px;
}

.publication-authors {
  color: var(--site-muted);
  font-size: 0.92em;
}

.paper-links {
  text-indent: 0;
}

.paper-links a {
  display: inline-flex;
  min-width: 5.2em;
  min-height: 2.2em;
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  margin-right: 0.45em;
  padding: 0.3em 0.7em;
  font-size: 0.9em;
  line-height: 1;
  text-align: center;
  text-indent: 0;
}

.publication-stage {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 0.5em 0.2em 0.5em 1em;
  border-left: 1px solid var(--site-line);
}

.publication-stage span {
  margin-bottom: 0.25em;
  color: var(--site-accent);
  font-family: "PT Sans Narrow", sans-serif;
  font-size: 0.86em;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.publication-stage strong {
  color: var(--site-ink);
  font-family: "PT Sans Narrow", sans-serif;
  font-size: 1.18em;
}

.publication-stage p {
  margin: 0.4em 0 0;
  color: var(--site-muted);
  font-size: 0.84em;
  line-height: 1.45;
}

.experience-heading {
  display: flex;
  justify-content: space-between;
  gap: 1em;
}

.experience-heading span {
  flex: none;
  color: var(--site-muted);
  font-family: "PT Sans Narrow", sans-serif;
}

.experience-item p,
.award-item p {
  margin: 0.35em 0 0;
  color: var(--site-muted);
  line-height: 1.55;
}

.award-item {
  display: grid;
  grid-template-columns: 4em 1fr;
  gap: 0.8em;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8em;
}

.skills-grid > div {
  padding: 1em;
  background: var(--site-card);
  border: 1px solid var(--site-line);
  border-radius: 10px;
}

.skills-grid p {
  margin: 0.4em 0 0;
  color: var(--site-muted);
  line-height: 1.5;
}

.footer-wrap {
  margin-top: 2em;
  border-top: 1px solid var(--site-line);
}

@media only screen and (min-width: 37.5em) {
  #main .article-author-top {
    width: 18%;
    margin-left: 5%;
    margin-right: 4%;
  }

  #main article {
    width: 68%;
    margin-left: 0;
    margin-right: 5%;
  }

  .footer-wrap footer {
    width: 68%;
    margin-left: 27%;
    margin-right: 5%;
  }
}

@media only screen and (max-width: 47.99em) {
  .publication-card {
    grid-template-columns: 1fr;
  }

  .publication-main {
    grid-template-columns: 1fr;
  }

  .publication-stage {
    padding: 0.9em 0 0;
    border-top: 1px solid var(--site-line);
    border-left: 0;
  }

  .publication-image img {
    max-height: 18em;
  }

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

@media only screen and (max-width: 37.49em) {
  .research-track,
  .timeline-item,
  .award-item {
    grid-template-columns: 1fr;
  }

  .experience-heading {
    display: block;
  }

  .experience-heading span {
    display: block;
    margin-top: 0.15em;
  }

  .experience-card {
    grid-template-columns: 100px minmax(0, 1fr);
    gap: 0.85em;
    padding: 0.85em;
  }

  .top-navigation ul {
    gap: 0.25em 0.75em;
  }

  .navigation-inner {
    gap: 0.65em;
    align-items: flex-start;
  }

  .language-switch a,
  .language-switch a:hover {
    min-width: 2.65em;
    min-height: 2em;
    padding-right: 0.5em;
    padding-left: 0.5em;
  }

  .timeline-item.education-item {
    grid-template-columns: minmax(0, 1fr) 72px;
    align-items: center;
  }

  .education-item .timeline-date,
  .education-item .education-copy {
    grid-column: 1;
  }

  .education-logo {
    grid-row: 1 / span 2;
    grid-column: 2;
    width: 68px;
    height: 68px;
  }

  .education-logo img {
    max-width: 58px;
    max-height: 58px;
  }
}