@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: url("../fonts/source-sans-3/SourceSans3VF-Upright.woff2") format("woff2-variations");
}

@font-face {
  font-family: "Source Sans 3";
  font-style: italic;
  font-weight: 200 900;
  font-display: swap;
  src: url("../fonts/source-sans-3/SourceSans3VF-Italic.woff2") format("woff2-variations");
}

:root {
  --na-background: #f5f7f6;
  --na-foreground: #20282d;
  --na-muted: #68747a;
  --na-surface: #ffffff;
  --na-surface-muted: #edf1f0;
  --na-border: #d4ddda;
  --na-primary: #176f7d;
  --na-primary-dark: #105864;
  --na-primary-foreground: #ffffff;
  --na-secondary: #e4ecee;
  --na-accent: #b87924;
  --na-nav: #17242a;
  --na-radius-sm: 3px;
  --na-radius-md: 5px;
  --na-radius-lg: 8px;
  --na-shadow-sm: 0 2px 8px rgba(25, 42, 48, .08);
  --na-shadow-md: 0 10px 28px rgba(25, 42, 48, .10);
  --na-font: "Source Sans 3", "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --na-mono: SFMono-Regular, Consolas, "Liberation Mono", monospace;
  --grey-l4: var(--na-background);
  --grey-l3: var(--na-border);
  --grey-l2: #bdc8c5;
  --grey-l1: #95a29f;
  --grey: #7a8784;
  --grey-d1: var(--na-muted);
  --grey-d2: #4e5b60;
  --grey-d3: #354247;
  --grey-d4: var(--na-foreground);
  --link-color: var(--na-primary);
  --active-color: var(--na-primary-dark);
  --text-dark: var(--na-foreground);
  --text-grey: var(--na-muted);
  --text-light: #7f8a8f;
}

html {
  scroll-padding-top: 6.25rem;
}

body.site-body {
  overflow-x: hidden;
  margin: 0;
  background: var(--na-background);
  color: var(--na-foreground);
  font-family: var(--na-font);
  font-size: 17px;
  font-weight: 450;
  line-height: 1.65;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body.site-body h1,
body.site-body h2,
body.site-body h3,
body.site-body h4,
body.site-body h5,
body.site-body h6,
.headfont {
  color: var(--na-foreground);
  font-family: var(--na-font) !important;
  font-weight: 650;
  letter-spacing: 0;
}

body.site-body a {
  color: var(--na-primary);
  transition: color .18s ease, border-color .18s ease, background-color .18s ease, opacity .18s ease;
}

body.site-body a:hover,
body.site-body a:focus {
  color: var(--na-primary-dark);
}

body.site-body :focus-visible {
  outline: 3px solid rgba(184, 121, 36, .55);
  outline-offset: 3px;
}

.container {
  max-width: 1180px;
}

/* Navigation */
.site-navbar.navbar {
  min-height: 72px;
  padding: .65rem 1rem;
  background: transparent;
  box-shadow: none;
  transition: min-height .25s ease, background-color .25s ease, box-shadow .25s ease;
}

.site-navbar.top-nav-collapse,
.site-navbar.navbar.scrolling-navbar.top-nav-collapse {
  min-height: 62px;
  padding-top: .45rem;
  padding-bottom: .45rem;
  background: rgba(23, 36, 42, .97);
  box-shadow: 0 2px 14px rgba(10, 23, 28, .18);
}

.site-navbar .navbar-brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  margin-right: 1.35rem;
  color: #fff;
  font-size: 1.24rem;
  font-weight: 600;
  line-height: 1;
}

.site-navbar .navbar-brand:hover,
.site-navbar .navbar-brand:focus {
  color: #fff;
}

.site-navbar .navbar-mark {
  width: 42px;
  height: 32px;
  margin-right: .65rem;
  object-fit: contain;
  filter: invert(0);
  transition: filter .25s ease;
}

.site-navbar.top-nav-collapse .navbar-mark {
  filter: invert(1);
}

.site-navbar .nav-link {
  position: relative;
  margin: 0 .08rem;
  padding: .55rem .62rem !important;
  color: rgba(255, 255, 255, .88) !important;
  font-size: .98rem;
  font-weight: 500;
  white-space: nowrap;
}

.site-navbar .nav-item.active {
  background: transparent;
}

.site-navbar .nav-item:not(.dropdown) > .nav-link::after {
  position: absolute;
  right: .62rem;
  bottom: .32rem;
  left: .62rem;
  height: 2px;
  background: var(--na-accent);
  content: "";
  opacity: 0;
  transform: scaleX(.45);
  transition: opacity .18s ease, transform .18s ease;
}

.site-navbar .dropdown-toggle::after {
  position: static;
  width: 0;
  height: 0;
  margin-left: .35em;
  border-top: .3em solid;
  border-right: .3em solid transparent;
  border-bottom: 0;
  border-left: .3em solid transparent;
  background: transparent;
  opacity: .8;
  transform: none;
  vertical-align: .18em;
}

.site-navbar .nav-item:not(.dropdown).active > .nav-link::after,
.site-navbar .nav-item:not(.dropdown) > .nav-link:hover::after,
.site-navbar .nav-item:not(.dropdown) > .nav-link:focus::after {
  opacity: 1;
  transform: scaleX(1);
}

.site-navbar .dropdown-menu {
  min-width: 12rem;
  margin-top: .45rem;
  padding: .4rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  background: var(--na-surface);
  box-shadow: var(--na-shadow-md);
}

.site-navbar .dropdown-item {
  padding: .55rem .7rem;
  border-radius: var(--na-radius-sm);
  color: var(--na-foreground);
  font-size: .94rem;
}

.site-navbar .dropdown-item:hover,
.site-navbar .dropdown-item:focus,
.site-navbar .dropdown-item.active {
  background: var(--na-secondary);
  color: var(--na-primary-dark);
}

/* Image headers */
.home-site-header {
  height: 68vh;
  min-height: 34rem;
  max-height: 46rem;
  overflow: hidden;
  background: var(--na-nav);
}

.home-site-header .carousel-inner,
.home-site-header .carousel-item,
.home-site-header .view,
.home-site-header .mask,
.inner-site-header .carousel-inner,
.inner-site-header .carousel-item,
.inner-site-header .view,
.inner-site-header .mask {
  height: 100%;
}

.home-site-header .view,
.inner-site-header .view {
  width: 100%;
  background-repeat: no-repeat;
  background-size: cover;
}

.home-site-header .view {
  background-position: var(--home-header-position, center center);
}

.home-hero-mask {
  background: rgba(10, 25, 30, .44);
}

.home-site-header .carousel-content {
  top: 50%;
  z-index: 20;
  transform: translateY(-43%);
}

.home-hero-copy,
.home-hero-copy h1 {
  color: #fff;
}

.home-hero-avatar {
  width: 10.5rem !important;
  max-width: 100%;
  border: 3px solid rgba(255, 255, 255, .82);
  box-shadow: 0 10px 28px rgba(5, 18, 23, .28);
}

.home-hero-title {
  margin: 0 0 .65rem;
  color: #fff !important;
  font-size: 3.05rem;
  font-weight: 500 !important;
  line-height: 1.15;
}

.home-hero-name-zh {
  white-space: nowrap;
}

.home-hero-role {
  margin: 0 0 .25rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.home-hero-focus {
  max-width: 43rem;
  margin: 0 0 .9rem;
  color: rgba(255, 255, 255, .9);
  font-size: 1.08rem;
}

.home-hero-links {
  display: flex;
  gap: .55rem;
  align-items: center;
  margin-bottom: .8rem;
  font-size: 1.04rem;
}

.home-hero-links a {
  color: #fff !important;
}

.home-hero-links a:hover,
.home-hero-links a:focus {
  opacity: .72;
}

.home-hero-social {
  display: flex;
  gap: .55rem;
  align-items: center;
}

.home-hero-social a {
  display: inline-flex;
  width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 50%;
  background: rgba(10, 25, 30, .18);
  color: #fff !important;
  font-size: 1.35rem;
  line-height: 1;
  transition: background-color .18s ease, border-color .18s ease, transform .18s ease;
}

.home-hero-social a:hover,
.home-hero-social a:focus {
  border-color: #fff;
  background: rgba(255, 255, 255, .2);
  color: #fff !important;
  text-decoration: none;
  transform: translateY(-2px);
}

.home-site-header .carousel-indicators {
  bottom: 1.15rem;
  gap: .35rem;
}

.home-site-header .carousel-indicators li {
  width: 22px;
  height: 3px;
  margin: 0;
  border-radius: 0;
}

.home-site-header .carousel-control-prev,
.home-site-header .carousel-control-next {
  width: 7%;
  opacity: .35;
}

.home-site-header .carousel-control-prev:hover,
.home-site-header .carousel-control-next:hover {
  opacity: .8;
}

.inner-site-header {
  height: 10rem;
  overflow: hidden;
  background: var(--na-nav);
}

.inner-site-header .view {
  background-position: var(--header-position, center center);
}

.inner-header-mask {
  background: rgba(10, 25, 30, .34);
}

/* Homepage */
.home-main {
  background: var(--na-background);
}

.home-section {
  padding: 4.75rem 0;
}

.home-program-section {
  border-top: 1px solid var(--na-border);
  border-bottom: 1px solid var(--na-border);
  background: var(--na-surface-muted);
}

.home-recent-section {
  background: var(--na-surface);
}

.section-heading-row {
  margin-bottom: 1.75rem;
}

.section-heading-row h2,
.page-title-row h1 {
  margin: 0;
  font-size: 2.5rem;
  line-height: 1.18;
}

.section-kicker {
  margin: 0 0 .4rem;
  color: var(--na-accent);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-heading-with-link {
  display: flex;
  gap: 2rem;
  align-items: flex-end;
  justify-content: space-between;
}

.section-heading-with-link > a {
  padding-bottom: .2rem;
  font-size: 1rem;
  font-weight: 600;
}

.section-heading-with-link i {
  margin-left: .35rem;
}

.home-research-summary {
  max-width: 54rem;
  margin: -1rem 0 2.25rem;
  color: var(--na-muted);
  font-size: 1.15rem;
  line-height: 1.75;
}

.home-research-list {
  border-top: 1px solid var(--na-border);
}

.home-research-item {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) 1.5rem;
  gap: 1.15rem;
  align-items: center;
  padding: 1.35rem .25rem;
  border-bottom: 1px solid var(--na-border);
  color: var(--na-foreground) !important;
}

.home-research-item:hover,
.home-research-item:focus {
  background: rgba(228, 236, 238, .55);
  text-decoration: none;
}

.home-research-item strong,
.home-research-item small {
  display: block;
}

.home-research-item strong {
  margin-bottom: .18rem;
  color: var(--na-foreground);
  font-size: 1.15rem;
  font-weight: 600;
}

.home-research-item small {
  color: var(--na-muted);
  font-size: 1rem;
  line-height: 1.45;
}

.home-research-number {
  color: var(--na-accent);
  font-size: .82rem;
  font-weight: 700;
}

.home-research-item > i {
  color: var(--na-primary);
  font-size: .95rem;
}

.home-research-program {
  margin-top: .25rem;
}

.home-research-program > div {
  padding-top: .25rem;
  padding-bottom: .5rem;
}

.program-rule {
  display: block;
  width: 2.5rem;
  height: 3px;
  margin-bottom: 1rem;
  background: var(--na-primary);
}

.home-research-program > div:nth-child(2) .program-rule {
  background: var(--na-accent);
}

.home-research-program > div:nth-child(3) .program-rule {
  background: #637b62;
}

.home-research-program h3 {
  min-height: 3.2rem;
  margin: 0 0 .75rem;
  font-size: 1.35rem;
  line-height: 1.3;
}

.home-research-program p {
  margin: 0;
  color: var(--na-muted);
  font-size: 1.04rem;
}

.home-software-section {
  border-bottom: 1px solid var(--na-border);
}

.home-software-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--na-border);
  border-bottom: 1px solid var(--na-border);
}

.home-software-item {
  display: grid;
  min-width: 0;
  grid-template-columns: 2.25rem minmax(0, 1fr) 1rem;
  gap: .85rem;
  align-items: start;
  padding: 1.5rem 1.35rem;
  border-right: 1px solid var(--na-border);
  color: var(--na-foreground) !important;
}

.home-software-item:last-child {
  border-right: 0;
}

.home-software-item:hover,
.home-software-item:focus {
  background: var(--na-surface-muted);
  text-decoration: none;
}

.home-software-item > i:first-child {
  color: var(--na-primary);
  font-size: 1.15rem;
  line-height: 1.5;
}

.home-software-item > i:last-child {
  align-self: center;
  color: var(--na-primary);
  font-size: .8rem;
}

.home-software-item strong,
.home-software-item small {
  display: block;
}

.home-software-item strong {
  margin-bottom: .35rem;
  font-size: 1.25rem;
  font-weight: 650;
}

.home-software-item small {
  color: var(--na-muted);
  font-size: .96rem;
  line-height: 1.45;
}

/* Research software */
.software-main {
  padding: 4rem 0 5.5rem;
}

.software-title-row {
  margin-bottom: 1.75rem;
}

.software-intro {
  max-width: 54rem;
  margin-bottom: 3rem;
  color: var(--na-muted);
  font-size: 1.12rem;
}

.software-list {
  border-top: 1px solid var(--na-border);
}

.software-entry {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 3rem;
  align-items: center;
  padding: 3.25rem 0;
  border-bottom: 1px solid var(--na-border);
  scroll-margin-top: 6rem;
}

.software-figure {
  min-width: 0;
  margin: 0;
  padding: .65rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  background: #fff;
  box-shadow: var(--na-shadow-sm);
}

.software-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--na-radius-sm);
  object-fit: contain;
}

.software-figure figcaption {
  padding: .7rem .25rem .1rem;
  color: var(--na-muted);
  font-size: .84rem;
  line-height: 1.45;
}

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

.software-meta {
  margin: 0 0 .45rem;
  color: var(--na-accent);
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.software-copy h2 {
  margin: 0 0 .35rem;
  font-size: 2.2rem;
  line-height: 1.15;
}

.software-tagline {
  margin: 0 0 1rem;
  color: var(--na-primary-dark);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.4;
}

.software-copy > p:not(.software-meta):not(.software-tagline):not(.software-topics) {
  font-size: 1.02rem;
}

.software-topics {
  margin: 1rem 0;
  color: var(--na-muted);
  font-size: .92rem;
  font-weight: 600;
}

.software-install pre {
  margin: 1.15rem 0 1.25rem;
  padding-right: 5.5rem;
}

.software-links {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
}

.software-links a {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  gap: .45rem;
  padding: .45rem .75rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-sm);
  background: var(--na-surface);
  color: var(--na-primary-dark);
  font-size: .9rem;
  font-weight: 600;
}

.software-links a:hover,
.software-links a:focus {
  border-color: var(--na-primary);
  background: var(--na-secondary);
  text-decoration: none;
}

/* Listings and previews */
.list-main,
.taxonomy-main,
.article-main,
.error-main {
  padding: 4rem 0 5.5rem;
}

.page-title-row {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 2.2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--na-border);
}

.page-title-row .post-heading {
  padding: 0;
}

.page-title-row > span {
  color: var(--na-muted);
  font-size: .95rem;
}

.section-intro {
  margin-bottom: 3rem;
}

.list-layout {
  align-items: flex-start;
}

.list-sidebar {
  position: sticky;
  top: 5.5rem;
  padding-right: 2rem;
}

.list-sidebar hr {
  margin: 0 0 1.4rem;
  border-color: var(--na-border);
}

.list-sidebar .post-meta {
  color: var(--na-muted);
  line-height: 1.45;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.post-grid-wide,
.home-post-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.post-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  background: var(--na-surface);
  box-shadow: var(--na-shadow-sm);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.post-card:hover,
.post-card:focus-within {
  border-color: #b5c4c0;
  box-shadow: var(--na-shadow-md);
  transform: translateY(-2px);
}

.post-card-link {
  display: flex;
  height: 100%;
  flex-direction: column;
  color: inherit !important;
}

.post-card-link:hover,
.post-card-link:focus {
  text-decoration: none;
}

.post-card-media {
  display: flex;
  aspect-ratio: 16 / 10;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: .65rem;
  border-bottom: 1px solid var(--na-border);
  background: #fff;
}

.post-card-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform .25s ease;
}

.post-card:hover .post-card-media img {
  transform: scale(1.015);
}

.post-card-body {
  display: flex;
  min-height: 15rem;
  flex: 1;
  flex-direction: column;
  padding: 1.25rem 1.3rem 1.15rem;
}

.post-card-taxonomy {
  display: flex;
  min-height: 1.2rem;
  gap: .4rem;
  flex-wrap: wrap;
  margin-bottom: .55rem;
  color: var(--na-accent);
  font-size: .71rem;
  font-weight: 700;
  text-transform: uppercase;
}

.post-card-taxonomy span + span::before {
  margin-right: .4rem;
  content: "·";
}

.post-card h3 {
  margin: 0 0 .7rem;
  font-size: 1.32rem;
  line-height: 1.3;
}

.post-card-summary {
  display: -webkit-box;
  overflow: hidden;
  margin: 0 0 1rem;
  color: var(--na-muted);
  font-size: .98rem;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
}

.post-card-meta {
  display: flex;
  gap: .42rem;
  align-items: center;
  margin-top: auto;
  color: var(--na-muted);
  font-size: .82rem;
}

.post-card-meta i {
  margin-left: auto;
  color: var(--na-primary);
}

.pagination {
  margin-top: 2.75rem;
}

/* Articles */
.article-container {
  max-width: 1500px;
}

.article-layout {
  align-items: flex-start;
}

.post-wrapper.single-post {
  margin: 0;
  padding: 3.5rem 4.5rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  background: var(--na-surface);
  box-shadow: var(--na-shadow-sm);
}

.single-post .post-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--na-border);
}

.single-post .post-heading {
  padding: .65rem 0;
}

.single-post .post-heading h1 {
  max-width: 56rem;
  margin: 0 auto;
  font-size: 2.65rem;
  font-weight: 600;
  line-height: 1.2;
}

.single-post .post-header .view {
  max-height: none;
  margin: 2rem 0 0;
  padding: .75rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  background: #fff;
}

.single-post .post-header .view img {
  max-height: 70vh;
  object-fit: contain;
}

.single-post .post-content {
  max-width: 56rem;
  margin: 2.25rem auto 3rem;
}

.markdown {
  color: var(--na-foreground);
}

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4,
.markdown h5,
.markdown h6 {
  scroll-margin-top: 0;
}

.markdown h2 {
  margin-top: 2.6rem;
  margin-bottom: 1.15rem;
  padding-top: .2rem;
  font-size: 1.8rem;
}

.markdown h3 {
  margin-top: 2.1rem;
  margin-bottom: .9rem;
  font-size: 1.42rem;
}

.markdown h4 {
  font-size: 1.18rem;
}

.markdown p,
.markdown li {
  line-height: 1.72;
}

.markdown a {
  text-decoration-thickness: 1px;
  text-underline-offset: .16em;
}

.markdown blockquote {
  padding: .9rem 1.2rem;
  border-left: 3px solid var(--na-accent);
  background: var(--na-surface-muted);
}

.markdown pre,
.markdown code {
  font-family: var(--na-mono);
}

.markdown pre {
  overflow-x: auto;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  background: #f7f9f8;
}

.markdown .copy-code-button {
  opacity: 1;
}

.markdown table {
  display: table;
  max-width: 100%;
}

.markdown img {
  border-radius: var(--na-radius-sm);
  box-shadow: var(--na-shadow-sm);
}

.markdown figure,
.markdown figure img {
  margin-right: auto;
  margin-left: auto;
}

.markdown figcaption {
  max-width: 48rem;
  color: var(--na-muted);
  font-size: .88rem;
}

.markdown .figure-row {
  gap: .8rem;
}

.markdown .figure-row img {
  flex-basis: calc((100% - 1.6rem) / 3);
  width: calc((100% - 1.6rem) / 3);
}

.article-tags {
  max-width: 56rem;
  margin: 0 auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--na-border);
}

.tags-sm a,
.tags-md a {
  border-color: var(--na-border);
  border-radius: var(--na-radius-sm);
  color: var(--na-muted);
}

.article-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--na-border);
}

.article-pagination a {
  display: inline-flex;
  max-width: 100%;
  flex-direction: column;
}

.article-pagination small {
  margin-bottom: .35rem;
  color: var(--na-muted);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.article-pagination span {
  display: flex;
  gap: .5rem;
  align-items: baseline;
}

.toc-column {
  position: sticky;
  top: 5.3rem;
}

.toc-nav {
  max-height: calc(100vh - 7rem);
  padding: 1.25rem 0 1.25rem 1rem;
  border-left: 1px solid var(--na-border);
}

.toc-nav::before {
  display: block;
  margin-bottom: .7rem;
  color: var(--na-muted);
  content: "On this page";
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.toc-nav .nav-item,
.toc-nav .nav-link {
  color: var(--na-muted);
  font-size: .77rem;
  line-height: 1.3;
}

/* Existing content components */
.markdown .research-index-grid {
  gap: 1.5rem;
}

.markdown .research-index-card {
  gap: 1rem;
  color: var(--na-primary);
}

.markdown .research-index-image {
  padding: 1rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  box-shadow: var(--na-shadow-sm);
}

.markdown .research-index-title {
  font-family: var(--na-font);
  font-size: 1.7rem;
  font-weight: 600;
}

.markdown .book-hub-item,
.markdown .outreach-talk {
  border-color: var(--na-border);
  border-radius: var(--na-radius-md);
  box-shadow: var(--na-shadow-sm);
}

.markdown .book-hub-item:hover,
.markdown .book-hub-item:focus,
.markdown .outreach-talk:hover {
  border-color: #b5c4c0;
  box-shadow: var(--na-shadow-md);
}

/* Taxonomies */
.taxonomy-list {
  max-width: 58rem;
  padding: 0;
}

.taxonomy-list .post-item {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--na-border);
  list-style: none;
}

.taxonomy-list .meta {
  color: var(--na-muted);
  font-size: .82rem;
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
}

.term-grid a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .85rem 1rem;
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-sm);
  background: var(--na-surface);
}

.term-grid a:hover,
.term-grid a:focus {
  background: var(--na-secondary);
  text-decoration: none;
}

.term-grid small {
  color: var(--na-muted);
}

/* Footer */
.site-footer {
  padding: 3.25rem 0 1.6rem;
  border-top: 1px solid rgba(255, 255, 255, .1);
  background: var(--na-nav);
  color: rgba(255, 255, 255, .72);
}

.footer-row,
.footer-copyright {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
}

.footer-row strong {
  color: #fff;
  font-size: 1.08rem;
}

.footer-row p {
  margin: .15rem 0 0;
  font-size: .88rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
  font-size: 1.15rem;
}

.site-footer a {
  color: rgba(255, 255, 255, .82) !important;
}

.site-footer a:hover,
.site-footer a:focus {
  color: #fff !important;
}

.footer-copyright {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: .76rem;
}

.error-main {
  min-height: 45vh;
}

.error-main h1 {
  margin: 0 0 1rem;
}

@media (max-width: 1199.98px) {
  .site-navbar .nav-link {
    padding-right: .42rem !important;
    padding-left: .42rem !important;
    font-size: .91rem;
  }

  .post-wrapper.single-post {
    padding: 3rem 3.5rem;
  }
}

@media (max-width: 991.98px) {
  .site-navbar.navbar,
  .site-navbar.navbar:not(.top-nav-collapse) {
    min-height: 64px;
    background: rgba(23, 36, 42, .97);
  }

  .site-navbar .navbar-mark,
  .site-navbar.top-nav-collapse .navbar-mark {
    filter: invert(1);
  }

  .site-navbar .navbar-collapse {
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    padding: .75rem 0 1rem;
  }

  .site-navbar .nav-link {
    padding: .65rem .5rem !important;
  }

  .site-navbar .nav-item:not(.dropdown) > .nav-link::after {
    right: auto;
    bottom: .45rem;
    left: .5rem;
    width: 2.25rem;
  }

  .site-navbar .dropdown-menu {
    position: static !important;
    width: 100%;
    margin: 0 0 .35rem;
    border: 0;
    background: rgba(255, 255, 255, .08);
    box-shadow: none;
    float: none;
  }

  .site-navbar .navbar-nav .dropdown-menu .dropdown-item {
    display: block;
    width: 100%;
    color: rgba(255, 255, 255, .82) !important;
  }

  .site-navbar .navbar-nav .dropdown-menu .dropdown-item:hover,
  .site-navbar .navbar-nav .dropdown-menu .dropdown-item:focus,
  .site-navbar .navbar-nav .dropdown-menu .dropdown-item.active {
    background: rgba(255, 255, 255, .12);
    color: #fff !important;
  }

  .list-sidebar {
    position: static;
    margin-bottom: 2.5rem;
    padding-right: 15px;
  }

  .post-grid-wide,
  .home-post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767.98px) {
  body.site-body {
    font-size: 16px;
  }

  .home-site-header {
    height: 70vh;
    min-height: 35rem;
    max-height: 42rem;
  }

  .home-site-header .view {
    background-position: var(--home-header-position-mobile, var(--home-header-position, center center));
  }

  .home-site-header .carousel-content {
    transform: translateY(-42%);
  }

  .home-hero-avatar-column {
    margin-bottom: .85rem;
  }

  .home-hero-avatar {
    width: 6.5rem !important;
  }

  .home-hero-title {
    margin-bottom: .55rem;
    font-size: 2.15rem;
  }

  .home-hero-role {
    font-size: 1.08rem;
  }

  .home-hero-focus {
    max-width: 23rem;
    margin-right: auto;
    margin-left: auto;
    font-size: .98rem;
  }

  .home-hero-links,
  .home-hero-social {
    justify-content: center;
  }

  .inner-site-header {
    height: 8rem;
  }

  .inner-site-header .view {
    background-position: var(--header-position-mobile, var(--header-position, center center));
  }

  .home-section,
  .list-main,
  .taxonomy-main,
  .article-main,
  .error-main {
    padding-top: 3.25rem;
    padding-bottom: 3.75rem;
  }

  .section-heading-row h2,
  .page-title-row h1 {
    font-size: 2.1rem;
  }

  .home-research-program > div {
    margin-bottom: 2rem;
  }

  .home-research-program > div:last-child {
    margin-bottom: 0;
  }

  .home-software-list {
    grid-template-columns: 1fr;
  }

  .home-software-item,
  .home-software-item:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--na-border);
  }

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

  .software-main {
    padding: 3.25rem 0 3.75rem;
  }

  .software-entry {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding: 2.5rem 0;
  }

  .software-copy h2 {
    font-size: 2rem;
  }

  .home-research-program h3 {
    min-height: 0;
  }

  .post-grid,
  .post-grid-wide,
  .home-post-grid {
    grid-template-columns: 1fr;
  }

  .post-card-body {
    min-height: 0;
  }

  .post-wrapper.single-post {
    padding: 2.25rem 1.6rem;
  }

  .single-post .post-heading h1 {
    font-size: 2rem;
  }

  .markdown h2 {
    font-size: 1.55rem;
  }

  .markdown h3 {
    font-size: 1.3rem;
  }

  .article-pagination {
    grid-template-columns: 1fr;
  }

  .article-pagination .text-right {
    text-align: left !important;
  }

  .term-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 575.98px) {
  .site-navbar .navbar-brand {
    font-size: 1.08rem;
  }

  .site-navbar .navbar-mark {
    width: 36px;
    height: 28px;
  }

  .home-site-header {
    min-height: 34rem;
  }

  .home-hero-name-zh {
    display: block;
    margin-top: .12rem;
  }

  .home-hero-title {
    font-size: 1.95rem;
  }

  .home-research-item {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: .65rem;
    padding: 1rem 0;
  }

  .home-research-item > i {
    display: none;
  }

  .home-software-item {
    grid-template-columns: 1.8rem minmax(0, 1fr);
    padding: 1.2rem 0;
  }

  .home-software-item > i:last-child {
    display: none;
  }

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

  .software-entry {
    margin-right: -.15rem;
    margin-left: -.15rem;
  }

  .software-figure {
    padding: .45rem;
  }

  .software-links a {
    min-height: 2.75rem;
  }

  .section-heading-with-link {
    display: block;
  }

  .section-heading-with-link > a {
    display: inline-block;
    margin-top: .7rem;
  }

  .post-wrapper.single-post {
    margin-right: -.25rem;
    margin-left: -.25rem;
    padding: 1.8rem 1.15rem;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .single-post .post-heading h1 {
    font-size: 1.75rem;
  }

  .single-post .post-header .view {
    padding: .35rem;
  }

  .markdown .figure-row {
    gap: .35rem;
  }

  .markdown .figure-row img {
    flex-basis: calc((100% - .7rem) / 3);
    width: calc((100% - .7rem) / 3);
  }

  .taxonomy-list .post-item {
    grid-template-columns: 1fr;
    gap: .2rem;
  }

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

  .footer-row,
  .footer-copyright {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-copyright {
    gap: .35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}