@font-face {
  font-family: "Lato";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../assets/fonts/lato-regular.woff2") format("woff2");
}

@font-face {
  font-family: "Lato";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../assets/fonts/lato-bold.woff2") format("woff2");
}

:root {
  /* Jon / Reference palette on Yue Chen / Fanegg's fixed desktop canvas. */
  --color-background: #ffffff;
  --color-surface: #ffffff;
  --color-text: #000000;
  --color-muted: #000000;
  --color-link: #1772d0;
  --color-link-hover: #f09228;
  --color-focus: #1772d0;
  --color-media-surface: #ffffff;
  --color-border: #d9d9d9;
  --color-attribution: #666666;

  --font-body: "Lato", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --body-size: 0.875rem;
  --body-weight: 400;
  --body-line-height: 1.4;
  --name-size: 2rem;
  --section-size: 1.375rem;
  --publication-title-size: 0.875rem;
  --publication-title-weight: 700;
  --publication-detail-size: 0.875rem;
  --page-width: 50rem;
  --page-padding-inline: 1.5rem;
  --publication-media-width: 10rem;
  --publication-media-height: 10rem;
  --publication-gap: 1.25rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: var(--page-width);
  scroll-behavior: smooth;
}

body {
  width: var(--page-width);
  min-width: var(--page-width);
  margin: 0 auto;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--body-size);
  font-weight: var(--body-weight);
  line-height: var(--body-line-height);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

[hidden] {
  display: none !important;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 120ms ease;
}

a:hover {
  color: var(--color-link-hover);
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 0.1875rem solid var(--color-focus);
  outline-offset: 0.2rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.625rem 0.875rem;
  border: 0.0625rem solid var(--color-text);
  border-radius: 0.25rem;
  background: var(--color-surface);
  font-weight: 600;
  transform: translateY(-180%);
}

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

.visually-hidden {
  position: absolute;
  width: 0.0625rem;
  height: 0.0625rem;
  padding: 0;
  margin: -0.0625rem;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.site-shell {
  position: relative;
  width: var(--page-width);
  margin-inline: 0;
  padding: 3.5rem var(--page-padding-inline) 3rem;
}

.site-footer {
  width: var(--page-width);
  padding: 0 var(--page-padding-inline) 1.5rem;
  color: var(--color-attribution);
  font-size: 0.75rem;
  line-height: 1.4;
  text-align: right;
}

.site-footer p {
  margin: 0;
}

.profile-header {
  margin-bottom: 3rem;
}

.profile-header__layout {
  display: grid;
  grid-template-areas:
    "identity portrait"
    "introduction portrait"
    "links portrait";
  grid-template-columns: minmax(0, 1fr) 12.5rem;
  column-gap: 1.75rem;
  row-gap: 1.25rem;
  align-items: start;
}

.profile-identity {
  grid-area: identity;
}

.profile-name-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.75rem;
  white-space: nowrap;
}

.profile-name-row h1 {
  margin: 0;
  font-size: var(--name-size);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.profile-name-zh {
  color: var(--color-muted);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.55;
}

.profile-introduction {
  grid-area: introduction;
  min-width: 0;
}

.profile-introduction p {
  margin: 0;
}

.profile-introduction p + p {
  margin-top: 0.9rem;
}

.profile-introduction__highlight {
  font-weight: 600;
}

.profile-links {
  grid-area: links;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.55rem;
  color: var(--color-muted);
  line-height: 1.3;
}

.profile-link {
  font-weight: 500;
}

.profile-link--button {
  appearance: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-link);
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  line-height: inherit;
  transition: color 120ms ease;
}

.profile-link--button:hover {
  color: var(--color-link-hover);
}

.profile-contact {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.profile-contact__popover {
  position: absolute;
  z-index: 20;
  top: calc(100% + 0.55rem);
  left: 50%;
  visibility: hidden;
  border: 0.0625rem solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -0.2rem);
  transition:
    opacity 120ms ease,
    transform 120ms ease,
    visibility 120ms ease;
}

.profile-contact > .profile-link:focus-visible + .profile-contact__popover,
.profile-contact.is-open .profile-contact__popover {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

@media (hover: hover) and (pointer: fine) {
  .profile-contact:hover .profile-contact__popover {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, 0);
  }

  .profile-links:has(.profile-contact:hover)
    .profile-contact:not(:hover)
    .profile-contact__popover {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -0.2rem);
  }
}

.profile-contact--wechat.is-dismissed
  > .profile-link
  + .profile-contact__popover {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -0.2rem);
}

.profile-contact__popover--email {
  padding: 0.45rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 400;
  line-height: 1.25;
  white-space: nowrap;
}

.profile-contact__popover--wechat {
  width: 10rem;
  padding: 0.45rem;
}

.profile-contact__popover--wechat img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
}

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

.profile-portrait {
  position: relative;
  grid-area: portrait;
  width: 12.5rem;
  height: 12.5rem;
  overflow: hidden;
  margin: 0;
  align-self: center;
  border-radius: 50%;
  background: var(--color-surface);
  isolation: isolate;
  justify-self: end;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  transition: transform 300ms cubic-bezier(.25,.8,.25,1), box-shadow 300ms cubic-bezier(.25,.8,.25,1);
}

.profile-portrait__image {
  width: 100%;
  height: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  object-position: center;
}

.profile-portrait__image--alternate {
  position: absolute;
  z-index: 1;
  inset: 0;
  opacity: 0;
  transition: opacity 200ms ease-in-out;
}

.profile-portrait:focus-visible .profile-portrait__image--alternate {
  opacity: 1;
}

.profile-portrait:focus-visible {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.20);
  transform: scale(1.03) translateY(-3px);
}

@media (hover: hover) and (pointer: fine) {
  .profile-portrait:hover,
  .profile-portrait:hover:focus-visible {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.20);
    transform: scale(1.03) translateY(-3px);
  }

  .profile-portrait:hover .profile-portrait__image--alternate {
    opacity: 1;
  }
}

.content-section {
  padding: 0;
}

.section-title {
  margin: 0;
  font-size: var(--section-size);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.research-heading {
  display: flex;
  min-height: 1.75rem;
  align-items: baseline;
  gap: 0.8rem;
  margin: 0 0 1.25rem;
}

.research-summary {
  margin: 0;
}

.research-summary p {
  margin: 0;
}

.research-vision strong,
.research-goal strong {
  font-weight: 700;
}

.research-point {
  margin-top: 0.9rem;
}

.research-goal__marker {
  margin-right: 0.22em;
}

.research-hover-note {
  color: var(--color-muted);
  font-size: 0.8125rem;
  line-height: 1.45;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-0.12rem);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
}

.research-heading__note {
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.section-title:hover + .research-heading__note,
.section-title:focus + .research-heading__note {
  opacity: 0.72;
  transform: translateY(0);
}

.research-point__note {
  display: grid;
  grid-template-rows: 0fr;
  margin: 0 0 0 1.1rem;
  overflow: hidden;
  transition:
    grid-template-rows 140ms ease,
    margin-top 140ms ease,
    opacity 140ms ease,
    transform 140ms ease;
}

.research-point__note p {
  min-height: 0;
  overflow: hidden;
  text-align: right;
}

.research-point__note em {
  font-style: italic;
}

.research-point__note cite {
  margin-left: 0.25em;
  font-size: 0.75rem;
  font-style: normal;
}

.research-point:hover .research-point__note,
.research-point:focus-within .research-point__note {
  grid-template-rows: 1fr;
  margin-top: 0.3rem;
  opacity: 0.72;
  transform: translateY(0);
}

.publication-note {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.3rem;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.publication-note__marker {
  color: inherit;
  font-weight: inherit;
}

.publication-list {
  display: grid;
  gap: 0.625rem;
  margin-top: 1.25rem;
}

.publication {
  display: grid;
  grid-template-columns: var(--publication-media-width) minmax(0, 1fr);
  gap: var(--publication-gap);
  align-items: center;
  padding-block: 0.5rem;
}

.publication-media-cell {
  display: flex;
  width: var(--publication-media-width);
  height: var(--publication-media-height);
  min-width: var(--publication-media-width);
  min-height: var(--publication-media-height);
  align-items: center;
  justify-content: center;
}

.publication-media {
  position: relative;
  width: var(--publication-media-width);
  height: var(--publication-media-height);
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 0;
  background: var(--color-media-surface);
}

.publication-media__link {
  display: block;
  width: 100%;
  height: 100%;
}

.publication-media__link img,
.publication-media video {
  width: 100%;
  height: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.publication-media__link img {
  transition: opacity 120ms ease;
}

.publication-media__link:hover img {
  opacity: 0.9;
}

.publication-media video {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--color-media-surface);
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.publication-media.is-playing video {
  opacity: 1;
}

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

.publication-title {
  margin: 0;
  font-size: var(--publication-title-size);
  font-weight: var(--publication-title-weight);
  letter-spacing: 0;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.publication-authors,
.publication-venue,
.publication-summary {
  margin: 0;
  font-size: var(--publication-detail-size);
  line-height: 1.35;
}

.publication-authors strong {
  font-weight: 700;
}

.publication-authors sup {
  color: inherit;
  font-size: 0.72em;
  font-weight: 500;
}

.publication-venue {
  color: var(--color-muted);
  font-style: italic;
}

.publication-summary {
  margin-top: 0.65rem;
}

.publication-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.45rem;
  margin: 0;
  font-size: var(--publication-detail-size);
  line-height: 1.35;
}

.publication-actions a {
  font-weight: 500;
}

.publication-stars {
  display: inline-flex;
  min-height: 1rem;
  align-items: center;
}

.publication-stars img {
  width: auto;
  height: 1rem;
}

.compact-list ul {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.compact-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.compact-list li span:last-child {
  color: var(--color-muted);
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}