@font-face {
  font-family: "Noto Serif SC Local";
  src: url("../fonts/NotoSerifSC-SemiBold.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 600;
  unicode-range: U+653F, U+848B;
}

:root {
  --brand-color: #440079;
  --brand-color-hover: #fb9e09;
  --brand-color-hover-text: #7a4300;
  --brand-award: #d84c19;
  --ink: #111;
  --muted: #555;
  --line: #e8e8e8;
  --surface: #fdfdfd;
  --font-size: 12pt;
  --font-size-section-title: 16pt;
  --font-size-title: 26pt;
  --line-height: 1.5;
  --nav-font-size: 16pt;
  --font-family: Palatino, "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --content-width: 1100px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
  scroll-padding-top: 20px;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-family);
  font-size: var(--font-size);
  font-kerning: normal;
  font-variant-ligatures: common-ligatures contextual;
  line-height: var(--line-height);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-thumb {
  border-radius: 5px;
  background: var(--brand-color);
}

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

a,
a:visited {
  color: var(--brand-color);
  text-decoration: none;
}

a:hover {
  color: var(--brand-color-hover-text);
  text-decoration: underline;
}

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

:focus-visible {
  outline: 3px solid var(--brand-color-hover-text);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 2000;
  top: 8px;
  left: 12px;
  padding: 7px 11px;
  border-radius: 4px;
  background: #3f3f3f;
  color: #fff;
  transform: translateY(-150%);
}

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

.site-header {
  position: relative;
  z-index: 100;
  border-top: 5px solid #3f3f3f;
  border-bottom: 1px solid #bfbfbf;
  background: var(--surface);
}

.site-header-inner {
  display: flex;
  min-height: 70px;
  max-width: var(--content-width);
  align-items: stretch;
  justify-content: space-between;
  gap: 30px;
  margin: 0 auto;
  padding: 0 50px;
}

.site-title {
  display: inline-flex;
  align-items: center;
  margin-bottom: -1px;
  border-bottom: 5px solid transparent;
  color: var(--brand-color);
  font-size: 28px;
  font-weight: 600;
  line-height: 65px;
}

.site-title:visited {
  color: var(--brand-color);
}

.site-title:hover {
  border-color: var(--brand-color-hover);
  color: var(--brand-color-hover-text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: stretch;
  gap: 15px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  border-bottom: 5px solid transparent;
  color: #000;
  font-size: var(--nav-font-size);
  font-weight: 555;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a.is-active {
  border-color: var(--brand-color-hover);
  color: var(--brand-color-hover-text);
  text-decoration: none;
}

.nav-toggle {
  display: none;
}

.page-content {
  min-height: calc(100vh - 151px);
}

.page-wrapper {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding-right: 50px;
  padding-left: 50px;
}

.profile-hero {
  display: grid;
  width: 88%;
  grid-template-columns: 205px minmax(0, 1fr);
  align-items: center;
  gap: 70px;
  margin-left: auto;
  padding: 48px 0 16px;
}

.profile-photo-wrap {
  display: flex;
  justify-content: center;
}

.profile-photo {
  width: 190px;
  height: 190px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
}

.profile-details {
  text-align: center;
}

.profile-details h1 {
  margin: 0 0 6px;
  color: var(--brand-color);
  font-size: 33px;
  line-height: 1.25;
}

.chinese-name {
  font-family: "Noto Serif SC Local", "Songti SC", STSong, serif;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.profile-details p {
  margin: 1px 0;
}

.profile-position,
.institution-link {
  font-weight: 700;
}

.profile-location {
  color: var(--muted);
}

.email-link,
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.email-link {
  margin-top: 3px;
}

.icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  color: #828282;
  vertical-align: middle;
}

.icon svg {
  display: block;
  width: 16px;
  height: 16px;
}

a:hover .icon {
  color: var(--brand-color-hover-text);
}

.social-bar {
  display: flex;
  width: 88%;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
  margin-left: auto;
  padding: 9px 0 5px;
}

.social-link {
  min-height: 30px;
  font-size: 0.96em;
}

.content-section {
  width: 88%;
  margin: 30px 0 30px auto;
}

.intro-section {
  margin-top: 24px;
}

.section-title {
  margin: 0 0 16px;
  color: var(--brand-color);
  font-size: var(--font-size-section-title);
  font-weight: 800;
  line-height: 1.25;
  text-align: left;
}

.section-title span {
  display: inline-block;
  padding-left: 12px;
  border-left: 4px solid var(--brand-color);
}

.prose p {
  margin: 0 0 14px;
}

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

.contact-callout {
  margin: 18px 0 0;
  padding: 10px 20px;
  border: 1px solid #e8e6f0;
  border-radius: 8px;
  background: #f9f8fc;
  font-weight: 700;
  text-align: center;
}

.activity-list {
  margin: 0;
}

.activity-item {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}

.activity-item:last-child {
  border-bottom: 0;
}

.activity-date {
  display: inline-block;
  min-width: 82px;
  flex: 0 0 auto;
  padding: 2px 10px;
  border-radius: 12px;
  background: #f0eef8;
  color: #534ab7;
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  white-space: nowrap;
}

.activity-content {
  font-size: 0.95em;
  line-height: 1.6;
}

.activity-content p {
  margin: 0;
}

.activity-toggle {
  min-width: 240px;
  min-height: 30px;
  margin-top: 10px;
  padding: 6px 20px;
  border: 0;
  border-radius: 16px;
  background: #c5bfdf;
  color: #534ab7;
  cursor: pointer;
  font: 600 13px/1.2 Arial, sans-serif;
}

.activity-toggle:hover {
  background: #e4e0f4;
}

.education-list,
.award-list,
.teaching-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-list {
  margin: 0 0 0 22px;
  padding: 0;
}

.service-item {
  padding: 3px 0;
  font-size: 0.95em;
  line-height: 1.5;
}

.education-item,
.award-item,
.teaching-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid #f1f1f1;
  font-size: 0.95em;
}

.education-item:last-child,
.award-item:last-child,
.teaching-item:last-child {
  border-bottom: 0;
}

.education-item h3,
.teaching-item h3 {
  margin: 0 0 1px;
  font-size: 1em;
  line-height: 1.45;
}

.education-item p,
.teaching-item p {
  margin: 0;
  color: var(--muted);
}

.education-item time,
.teaching-item time,
.award-item time {
  color: var(--brand-color);
  font-weight: 700;
  white-space: nowrap;
}

.award-item {
  grid-template-columns: 16px minmax(0, 1fr) auto;
  gap: 8px;
}

.award-item > .icon {
  color: var(--brand-award);
}

.award-item div {
  display: flex;
  flex-direction: column;
}

.award-item span:not(.icon) {
  color: var(--muted);
}

.inner-page {
  padding-top: 50px;
  padding-bottom: 25px;
}

.page-heading {
  margin: 0 0 28px;
  text-align: center;
}

.page-heading h1 {
  margin: 0;
  color: var(--brand-color);
  font-size: var(--font-size-title);
  line-height: 1.25;
}

.research-direction-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0;
}

.research-direction {
  padding: 16px 20px;
  border-left: 4px solid var(--direction-accent);
  border-radius: 0 8px 8px 0;
  background: color-mix(in srgb, var(--direction-accent) 5%, #fafafa);
  scroll-margin-top: 20px;
}

.research-direction h2 {
  margin: 0 0 8px;
  color: var(--direction-accent);
  font-size: 15pt;
  line-height: 1.3;
}

.research-visual {
  margin: 0 0 16px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--direction-accent) 20%, #dedede);
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(68, 0, 121, 0.06);
}

.research-visual a {
  display: block;
  cursor: zoom-in;
}

.research-visual a:hover {
  text-decoration: none;
}

.research-visual img {
  width: 100%;
  height: auto;
}

.research-direction .prose {
  line-height: 1.58;
}

.related-work {
  margin-top: 12px;
}

.related-work h3 {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 11pt;
  line-height: 1.4;
}

.related-work ul {
  margin: 0 0 0 24px;
  padding: 0;
}

.related-work li {
  margin: 3px 0;
}

.publication-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin-bottom: 8px;
}

.filter-button {
  display: inline-flex;
  min-height: 31px;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid #d4cddd;
  border-radius: 16px;
  background: #fff;
  color: var(--brand-color);
  cursor: pointer;
  font: 600 12px/1.2 Arial, sans-serif;
}

.filter-button:hover {
  border-color: var(--brand-color);
  background: #f0eef8;
}

.filter-button.is-active {
  border-color: var(--brand-color);
  background: var(--brand-color);
  color: #fff;
}

.filter-count {
  display: inline-grid;
  min-width: 19px;
  min-height: 19px;
  place-items: center;
  border-radius: 50%;
  background: #f0eef8;
  color: #534ab7;
  font-size: 10px;
}

.filter-button.is-active .filter-count {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.filter-status {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.86em;
  text-align: center;
}

.publication-list {
  margin: 0 0 0 28px;
  padding: 0;
}

.publication-item {
  margin: 10px 0;
  padding-left: 3px;
  scroll-margin-top: 18px;
}

.publication-item::marker {
  color: #333;
  font-size: 0.92em;
}

.publication-item:target {
  border-radius: 4px;
  background: #f8f7fe;
  box-shadow: 0 0 0 5px #f8f7fe;
}

.publication-body {
  min-width: 0;
}

.publication-body h2 {
  margin: 0 0 2px;
  font-size: 1em;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.publication-authors,
.publication-venue {
  margin: 1px 0;
}

.publication-authors {
  font-size: 0.95em;
}

.self-author {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.publication-venue {
  color: #333;
  font-style: italic;
}

.publication-venue-link,
.publication-venue-link:visited {
  color: var(--brand-color);
}

.publication-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  align-items: center;
  margin-top: 2px;
  padding-left: 25px;
}

.resource-link,
.award-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.92em;
  line-height: 1.4;
}

.resource-link:hover {
  text-decoration: underline;
}

.award-badge {
  color: var(--brand-award);
  font-weight: 700;
}

.award-badge .icon {
  color: currentColor;
}

.contribution-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.9em;
}

.site-footer {
  margin-top: 35px;
  border-top: 1px solid #bfbfbf;
  color: #828282;
}

.site-footer-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 18px 24px;
  font-size: 0.84em;
  text-align: center;
}

@media (max-width: 900px) {
  .site-header-inner,
  .page-wrapper {
    padding-right: 28px;
    padding-left: 28px;
  }

  .site-nav {
    gap: 12px;
  }

  .site-nav a {
    font-size: 14pt;
  }

  .profile-hero,
  .social-bar,
  .content-section {
    width: 100%;
  }
}

@media (max-width: 700px) {
  body {
    font-size: 11.5pt;
  }

  .site-header-inner {
    min-height: 60px;
    align-items: center;
    padding-right: 22px;
    padding-left: 22px;
  }

  .site-title {
    min-height: 55px;
    font-size: 24px;
    line-height: 55px;
  }

  .nav-toggle {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    gap: 8px;
    padding: 6px 4px;
    border: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    font: 700 12px/1 Arial, sans-serif;
  }

  .nav-toggle-icon {
    display: grid;
    width: 21px;
    gap: 4px;
  }

  .nav-toggle-icon span {
    display: block;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
  }

  .site-nav {
    position: absolute;
    top: 55px;
    right: 20px;
    display: none;
    width: min(286px, calc(100vw - 40px));
    flex-direction: column;
    gap: 0;
    padding: 5px;
    border: 1px solid #bfbfbf;
    border-radius: 5px;
    background: var(--surface);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
    text-align: right;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    min-height: 40px;
    justify-content: flex-end;
    padding: 5px 10px;
    border: 0;
    border-right: 4px solid transparent;
    font-size: 13pt;
  }

  .site-nav a:hover,
  .site-nav a.is-active {
    border-color: var(--brand-color-hover);
    background: #f8f7fe;
  }

  .page-wrapper {
    padding-right: 24px;
    padding-left: 24px;
  }

  .profile-hero {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-top: 34px;
  }

  .profile-photo {
    width: 180px;
    height: 180px;
  }

  .profile-details h1 {
    font-size: 27px;
  }

  .inner-page {
    padding-top: 34px;
  }

  .page-heading {
    margin-bottom: 24px;
  }

  .page-heading h1 {
    font-size: 23pt;
  }

  .research-direction {
    padding: 14px 16px;
  }

  .education-item,
  .teaching-item {
    grid-template-columns: 1fr;
    gap: 1px;
  }
}

@media (max-width: 460px) {
  body {
    font-size: 11pt;
  }

  .page-wrapper {
    padding-right: 16px;
    padding-left: 16px;
  }

  .profile-photo {
    width: 166px;
    height: 166px;
  }

  .profile-details h1 {
    font-size: 24px;
  }

  .social-bar {
    gap: 4px 17px;
  }

  .social-link {
    min-height: 28px;
    font-size: 0.92em;
  }

  .content-section {
    margin-top: 25px;
    margin-bottom: 25px;
  }

  .section-title {
    margin-bottom: 13px;
    font-size: 15pt;
  }

  .activity-item {
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr);
    gap: 9px;
    padding: 7px 0;
  }

  .activity-date {
    min-width: 0;
    padding-right: 6px;
    padding-left: 6px;
  }

  .activity-toggle {
    width: 100%;
    min-width: 0;
  }

  .award-item {
    grid-template-columns: 16px minmax(0, 1fr);
  }

  .award-item time {
    grid-column: 2;
  }

  .publication-filters {
    justify-content: flex-start;
  }

  .publication-list {
    margin-left: 23px;
  }

  .publication-meta {
    padding-left: 0;
  }

  .research-direction h2 {
    font-size: 14pt;
  }

  .site-footer-inner {
    flex-direction: column;
    gap: 0;
  }
}

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

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

@media print {
  .site-header,
  .site-footer,
  .social-bar,
  .publication-filters,
  .filter-status,
  .activity-toggle {
    display: none !important;
  }

  .page-wrapper,
  .profile-hero,
  .content-section {
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .page-content {
    min-height: 0;
  }

  .publication-item,
  .research-direction {
    break-inside: avoid;
  }
}