:root {
  color-scheme: light;
  --bg: #fff;
  --fg: #252529;
  --muted: #666870;
  --line: #dedee2;
  --card: #f3f4f6;
  --accent: #b509ac;
  --codebg: #f5f6f8;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #16181b;
  --fg: #e4e6ea;
  --muted: #a0a5ad;
  --line: #33373d;
  --card: #1f2226;
  --accent: #e38bdd;
  --codebg: #1b1e22;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #16181b;
    --fg: #e4e6ea;
    --muted: #a0a5ad;
    --line: #33373d;
    --card: #1f2226;
    --accent: #e38bdd;
    --codebg: #1b1e22;
  }
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font:
    16px/1.62 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Arial,
    sans-serif;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
button,
summary {
  cursor: pointer;
}
button {
  font: inherit;
  color: var(--fg);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 10;
  padding: 8px;
  background: var(--bg);
}
.skip-link:focus {
  top: 8px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.site-nav {
  max-width: 1200px;
  margin: auto;
  min-height: 66px;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  font-size: 21px;
  color: var(--fg);
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.nav-links a {
  color: var(--fg);
  font-size: 15px;
}
.nav-links a[aria-current="page"] {
  color: var(--accent);
}
#theme-toggle {
  width: 32px;
  height: 32px;
}
.standard-page {
  max-width: 848px;
  margin: auto;
  padding: 38px 24px 64px;
  min-height: 70vh;
}
.wide-page {
  max-width: 1240px;
  margin: auto;
  padding: 38px 28px 64px;
  min-height: 70vh;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
.site-footer p {
  margin: 0 0 4px;
}
h1 {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  margin: 0 0 22px;
}
h2 {
  font-size: 25px;
  line-height: 1.3;
  font-weight: 500;
  margin: 32px 0 14px;
}
h3 {
  font-size: 20px;
  line-height: 1.35;
}
p {
  margin: 0 0 16px;
}
.meta,
.lede,
.caption {
  color: var(--muted);
}
.meta {
  font-size: 14px;
}
.lede {
  font-size: 18px;
}
.page-heading {
  margin-bottom: 32px;
}
.page-heading h1 {
  margin-bottom: 10px;
}
img,
video,
svg {
  max-width: 100%;
}
img {
  height: auto;
}
.profile {
  float: right;
  width: 30%;
  margin: 0 0 24px 32px;
}
.profile img {
  border-radius: 5px;
  box-shadow: 0 2px 8px #0002;
}
.profile p {
  margin: 5px 0;
}
.clear {
  clear: both;
}
.social {
  text-align: center;
  margin-top: 36px;
}
.news-list,
.post-list {
  list-style: none;
  padding: 0;
}
.news-list li {
  display: grid;
  grid-template-columns: 115px 1fr;
  gap: 16px;
  margin: 10px 0;
}
.news-list time {
  font-size: 14px;
  color: var(--muted);
}
.news-list p {
  margin: 0;
}
.post-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.post-list h2 {
  font-size: 23px;
  margin: 0 0 5px;
}
.post-list p {
  margin: 4px 0;
}
.projects .grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 24px;
}
.projects .grid.is-masonry {
  display: block;
  position: relative;
}
.projects .grid.is-masonry > .project-card {
  position: absolute;
  top: 0;
  left: 0;
}
.project-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 7px #0001;
}
.project-card > a {
  color: inherit;
}
.project-card > a:hover {
  text-decoration: none;
}
.project-card img {
  display: block;
  width: 100%;
  height: auto;
}
.card-body {
  padding: 16px 20px;
}
.card-body h2 {
  font-size: 22px;
  margin: 0 0 12px;
}
.card-body p {
  font-size: 15px;
  margin: 0;
}
.project-code {
  display: block;
  padding: 0 20px 16px;
}
.project-card:hover {
  border-color: var(--accent);
}
.article-shell {
  display: flex;
  align-items: flex-start;
  max-width: 1380px;
  margin: auto;
  min-height: 70vh;
  --accent: #1f5fbf;
}
.article-content {
  flex: 1;
  min-width: 0;
  max-width: 960px;
  padding: 34px 40px 80px;
}
.article-content h1 {
  font-size: 30px;
  font-weight: 650;
  margin-bottom: 10px;
}
.article-content h2 {
  font-size: 23px;
  margin: 42px 0 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
}
.article-content h3 {
  font-size: 18px;
  margin: 28px 0 10px;
}
.contents {
  position: sticky;
  top: 67px;
  width: 270px;
  flex: 0 0 270px;
  max-height: calc(100vh - 67px);
  overflow-y: auto;
  border-right: 1px solid var(--line);
  padding: 25px 18px;
  font-size: 13px;
}
.contents summary {
  font-size: 12px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 12px;
}
.contents nav a {
  display: block;
  padding: 4px 6px;
  color: var(--fg);
  line-height: 1.4;
  border-radius: 4px;
}
.contents nav a:hover {
  background: var(--card);
  color: var(--accent);
  text-decoration: none;
}
.contents nav a.subheading {
  padding-left: 20px;
  color: var(--muted);
}
[hidden] {
  display: none !important;
}
.tags {
  font-size: 13px;
}
.tags a {
  margin-right: 8px;
}
.article-content header {
  margin-bottom: 24px;
}
code {
  font:
    0.88em ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  background: var(--card);
  padding: 2px 4px;
  border-radius: 3px;
}
pre {
  background: var(--codebg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 15px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}
pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}
.highlight .k,
.highlight .kd,
.highlight .kn {
  color: #9b50b6;
}
.highlight .s,
.highlight .s1,
.highlight .s2 {
  color: #297c64;
}
.highlight .c,
.highlight .c1 {
  color: var(--muted);
}
table {
  border-collapse: collapse;
  font-size: 14px;
  display: block;
  max-width: 100%;
  overflow-x: auto;
  margin: 16px 0;
}
th,
td {
  border: 1px solid var(--line);
  padding: 6px 10px;
  text-align: left;
}
th {
  background: var(--card);
}
blockquote,
.box {
  background: var(--card);
  border-left: 4px solid var(--accent);
  margin: 18px 0;
  padding: 12px 18px;
}
.box.ok {
  border-color: #2e7d46;
}
.box.warn {
  border-color: #c0392b;
}
.box.note {
  border-color: #c98a1a;
}
.caption,
figcaption {
  font-size: 14px;
  margin: 8px 0 24px;
  text-align: center;
}
.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin: 18px 0;
}
.col-sm-3 {
  flex: 0 1 calc(25% - 16px);
}
.col-sm-4 {
  flex: 0 1 calc(33.333% - 16px);
}
.col-sm-6 {
  flex: 0 1 calc(50% - 16px);
}
.col-sm-8 {
  flex: 0 1 66.667%;
}
.col-sm-9 {
  flex: 0 1 75%;
}
.col-sm-12 {
  flex: 1;
}
.img-fluid {
  max-width: 100%;
  height: auto;
}
.rounded {
  border-radius: 5px;
}
.references {
  margin: 20px 0;
}
summary {
  color: var(--accent);
}
mjx-container[jax="CHTML"][display="true"] {
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
}
.publication {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  margin: 24px 0;
}
.publication-media {
  min-width: 0;
  align-self: start;
}
.publication-abbr {
  display: inline-block;
  width: 100px;
  max-width: 100%;
  padding: 2px 6px;
  border-radius: 2px;
  background: #b509ac;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}
.publication-preview {
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.22), 0 2px 10px rgba(0, 0, 0, 0.12);
  display: block;
  width: 100%;
  min-width: 80px;
  max-width: 200px;
  height: auto;
  border-radius: 4px;
}
.publication h3 {
  font-size: 17px;
  margin: 0 0 5px;
  font-weight: 650;
}
.publication p {
  font-size: 14px;
  margin: 4px 0;
}
.publication-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0;
}
.publication-links a,
.publication-links .bib-toggle,
.publication-links .citation-count {
  display: inline-block;
  min-width: 49px;
  text-align: center;
  font: inherit;
  font-size: 11px;
  line-height: 1.6;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--fg);
  border-radius: 2px;
  padding: 3px 12px;
  text-decoration: none;
}
.publication-links a:hover,
.publication-links .bib-toggle:hover,
.publication-links .bib-toggle[aria-expanded="true"] {
  color: var(--accent);
  border-color: var(--accent);
}
.bibtex-panel pre {
  margin: 6px 0 14px;
  background: var(--card);
}
.publication details {
  font-size: 14px;
  margin: 6px 0;
}
.publication > div {
  min-width: 0;
}
ol.bibliography {
  list-style: none;
  padding: 0;
}
.bibliography > li {
  margin-bottom: 26px;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.gallery-item {
  text-align: center;
  min-width: 0;
}
.gallery-item img,
.gallery-item video {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 14px;
  background: #fff;
}
.gallery-item h2 {
  font-size: 21px;
  font-weight: 750;
  line-height: 1.2;
  margin: 16px 0 10px;
}
.gallery-item p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}
:root[data-theme="dark"] .article-shell {
  --accent: #7fb0ff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .article-shell {
    --accent: #7fb0ff;
  }
}
@media (max-width: 980px) {
  .article-shell {
    display: block;
  }
  .contents {
    position: static;
    width: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 18px 24px;
  }
  .article-content {
    padding: 24px 24px 60px;
    max-width: none;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .site-nav {
    gap: 10px;
  }
  .nav-links {
    gap: 12px;
  }
}
@media (max-width: 600px) {
  .site-header {
    position: static;
  }
  .site-nav {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 20px;
  }
  .nav-links {
    gap: 14px;
  }
  .nav-links a {
    font-size: 14px;
  }
  .standard-page,
  .wide-page {
    padding: 28px 20px 50px;
  }
  .article-content {
    padding: 24px 18px 50px;
  }
  h1 {
    font-size: 30px;
  }
  .article-content h1 {
    font-size: 27px;
  }
  .profile {
    width: 35%;
    margin-left: 20px;
  }
  .projects .grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .publication {
    grid-template-columns: 85px 1fr;
    gap: 14px;
  }
  .news-list li {
    grid-template-columns: 95px 1fr;
    gap: 10px;
  }
  .row > [class*="col-sm"] {
    flex: 1 1 100%;
  }
  .gallery-grid {
    gap: 32px;
  }
  .gallery-item h2 {
    font-size: 22px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
@media print {
  .site-header,
  .site-footer,
  .contents {
    display: none;
  }
  .article-content {
    max-width: none;
    padding: 0;
  }
  .article-shell {
    display: block;
  }
  body {
    background: white;
    color: black;
  }
  a {
    color: inherit;
  }
}

/* Compact homepage rows and a small, self-contained set of original icons. */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  vertical-align: -0.125em;
}
.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  font: 14px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.profile-links .full-row { flex-basis: 100%; }
.profile-links a { display: inline-flex; align-items: center; gap: 7px; }
.home-updates h2 { font-size: 32px; font-weight: 400; margin: 28px 0 12px; }
.home-updates h2 a { color: var(--fg); }
.home-updates .news-list { margin: 0; }
.home-updates .news-list li {
  grid-template-columns: 20% minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 9px 4px;
}
.home-updates .news-list time { font-size: 16px; font-weight: 700; color: var(--fg); }
.social-icons { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 16px; }
.social-icons a { display: inline-flex; color: var(--fg); }
.social-icons a:hover { color: var(--accent); }
.social-icons .icon { width: 64px; height: 64px; }
.contact-note { margin: 16px 0 0; font-size: 13px; color: var(--fg); }
@media (max-width: 600px) {
  .home-updates .news-list li { grid-template-columns: 108px minmax(0, 1fr); gap: 10px; }
  .home-updates .news-list time { font-size: 14px; }
  .social-icons { gap: 12px; }
  .social-icons .icon { width: 42px; height: 42px; }
  .profile-links { font-size: 12px; }
}

/* Blog index: centered introduction and illustrated chronological rows. */
.blog-heading {
  text-align: center;
  padding: 0 0 34px;
}
.blog-heading h1 {
  font-size: 32px;
  font-weight: 400;
  margin: 0 0 22px;
}
.blog-topics {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 22px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.blog-topics a { font-size: 15px; }
.blog-topics a span { color: var(--muted); font-weight: 700; }
.blog-topics a + a::before { content: '·'; color: var(--muted); margin-right: 22px; }
.blog-rows { list-style: none; margin: 0; padding: 0; }
.blog-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 170px;
  gap: 24px;
  align-items: start;
  padding: 32px 0 40px;
  border-bottom: 1px solid var(--line);
  min-height: 178px;
}
.blog-row h2 { margin: 0 0 12px; font-size: 28px; font-weight: 400; line-height: 1.25; }
.blog-row h2 a { color: var(--fg); }
.blog-row h2 a:hover { color: var(--accent); text-decoration: none; }
.blog-description { margin: 0 0 20px; }
.blog-meta, .blog-taxonomy { color: var(--muted); font-size: 14px; margin: 6px 0 0; }
.blog-meta > span { margin: 0 8px; }
.blog-taxonomy { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 8px; }
.taxonomy-symbol { font-weight: 700; }
.taxonomy-separator { color: var(--muted); }
.blog-taxonomy .icon { width: 0.85em; height: 0.85em; }
.blog-taxonomy a { color: var(--muted); }
.blog-taxonomy a:hover { color: var(--accent); }
.blog-preview { display: block; }
.blog-preview img { display: block; width: 100%; height: auto; max-height: 170px; object-fit: contain; border-radius: 2px; }
@media (max-width: 600px) {
  .blog-heading h1 { font-size: 27px; }
  .blog-heading { padding-bottom: 20px; }
  .blog-topics { padding: 20px 0; gap: 10px 14px; }
  .blog-topics a + a::before { margin-right: 14px; }
  .blog-row { grid-template-columns: minmax(0, 1fr) 96px; gap: 16px; padding: 26px 0; }
  .blog-row h2 { font-size: 22px; }
}

.gallery-copyright {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 32px;
}

.publication-links .citation-count { position: relative; }
.publication-links .citation-count:hover,
.publication-links .citation-count:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}
.citation-count:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.citation-count::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--fg);
  color: var(--bg);
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
  visibility: hidden;
  z-index: 2;
}
.citation-count:hover::after,
.citation-count:focus-visible::after { visibility: visible; }