@font-face {
  font-family: "Optima";
  font-style: normal;
  font-weight: 400;
  src: local("Optima"), url("/?originalUrl=https%3A%2F%2Fyixfeng.github.io%2Ffonts%2FOPTIMA.woff") format("woff");
}

@font-face {
  font-family: "Optima Italic";
  font-style: normal;
  font-weight: 400;
  src: local("Optima Italic"), url("/?originalUrl=https%3A%2F%2Fyixfeng.github.io%2Ffonts%2FOptima_Italic.woff") format("woff");
}

@font-face {
  font-family: "Optima Medium";
  font-style: normal;
  font-weight: 400;
  src: local("Optima Medium"), url("/?originalUrl=https%3A%2F%2Fyixfeng.github.io%2Ffonts%2FOptima%2520Medium.woff") format("woff");
}

@font-face {
  font-family: "Optima Bold";
  font-style: normal;
  font-weight: 700;
  src: local("Optima Bold"), url("/?originalUrl=https%3A%2F%2Fyixfeng.github.io%2Ffonts%2FOPTIMA_B.woff") format("woff");
}

body,
td,
th,
tr,
p,
a,
button,
li,
span,
pre {
  font-family: "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #ffffff;
  color: #111111;
  font-size: 15px;
  line-height: 1.52;
}

a {
  color: #1367a7;
  font-family: "Optima Medium", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  text-decoration: none;
}

a:hover,
a:focus {
  color: #0d4a79;
}

.site-body {
  padding-top: 104px;
  padding-bottom: 40px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 24px 0;
}

.site-header-inner {
  max-width: 1150px;
  height: 64px;
  margin: 0 auto;
  padding: 0 22px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  border-radius: 10px;
  background-color: #999ea2;
  box-shadow: 0 0 20px #999;
  box-sizing: border-box;
}

.site-mark {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 50px;
}

.site-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  text-align: center;
  width: 100%;
}

.site-nav a,
.site-nav .delimiter {
  color: #ffffff;
  font-family: "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 21px;
  font-weight: 700;
}

.site-nav a:hover,
.site-nav a:focus {
  text-decoration: underline;
  color: #ffffff;
}

.content {
  width: min(1150px, calc(100vw - 28px));
  margin: 20px auto;
  padding: 36px 34px;
  background: #ffffff;
  border-radius: 15px;
  box-shadow: 0 0 20px #999;
  box-sizing: border-box;
}

.hero-section,
.section-block {
  scroll-margin-top: 110px;
}

.section-block,
.site-footer {
  max-width: 950px;
  margin-left: auto;
  margin-right: auto;
}

.section-block + .section-block {
  margin-top: 56px;
}

.section-block + .site-footer {
  margin-top: 52px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 92px;
  align-items: center;
  max-width: 940px;
  margin: 32px auto 0;
}

.hero-photo {
  width: 200px;
  height: 200px;
  margin-left: 32px;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 18px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

h1,
h2,
h3,
strong {
  font-family: "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

h1 {
  margin: 0 0 18px;
  color: #000000;
  font-size: 36px;
  line-height: 1.15;
}

h2 {
  margin: 0 0 14px;
  color: #000000;
  font-size: 30px;
}

h3 {
  margin: 0 0 8px;
  font-size: 22px;
  line-height: 1.35;
}

.hero-affiliation {
  margin: 0 0 12px;
  color: #000000;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.3;
  text-align: center;
}

.hero-email {
  margin: 0 0 16px;
  font-size: 19px;
  font-weight: 700;
  text-align: center;
}

.hero-email a {
  color: #12207d;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

.hero-email .fa-envelope {
  margin-right: 3px;
}

.hero-email .fa-at {
  margin: 0 1px;
}

.email-user,
.email-domain {
  font-family: "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

.social-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin: 0;
  justify-content: center;
}

.social-list a,
.social-list .social-divider {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.social-list a {
  min-width: 28px;
  min-height: 28px;
  color: #000000;
  transition: color 0.2s ease;
}

.social-list a:hover,
.social-list a:focus {
  color: #1367a7;
}

.social-list img {
  width: 25px;
  height: 25px;
  object-fit: contain;
}

.social-divider {
  color: gray;
  font-weight: 400;
}

.hero-copy {
  text-align: center;
}

@keyframes shake {
  0% {
    transform: translate(1px, 1px) rotate(0deg);
  }
  10% {
    transform: translate(-1px, -2px) rotate(-1deg);
  }
  20% {
    transform: translate(-3px, 0) rotate(1deg);
  }
  30% {
    transform: translate(3px, 2px) rotate(0deg);
  }
  40% {
    transform: translate(1px, -1px) rotate(1deg);
  }
  50% {
    transform: translate(-1px, 2px) rotate(-1deg);
  }
  60% {
    transform: translate(-3px, 1px) rotate(0deg);
  }
  70% {
    transform: translate(3px, 1px) rotate(-1deg);
  }
  80% {
    transform: translate(-1px, -1px) rotate(1deg);
  }
  90% {
    transform: translate(1px, 2px) rotate(0deg);
  }
  100% {
    transform: translate(1px, -2px) rotate(-1deg);
  }
}

.ai-google-scholar:hover,
.ai-google-scholar:focus {
  animation: shake 0.5s infinite;
  color: #4285f4;
}

.fa-github:hover,
.fa-github:focus {
  animation: shake 0.5s infinite;
  color: #4078c0;
}

.fa-twitter:hover,
.fa-twitter:focus {
  animation: shake 0.5s infinite;
  color: #1da1f2;
}

.fa-zhihu:hover,
.fa-zhihu:focus {
  animation: shake 0.5s infinite;
  color: #2864ff;
}

.fa-youtube:hover,
.fa-youtube:focus {
  animation: shake 0.5s infinite;
  color: #ff0000;
}

.fa-bilibili:hover,
.fa-bilibili:focus {
  animation: shake 0.5s infinite;
  color: #08a4d4;
}

#huggingface,
#redbook {
  vertical-align: sub;
}

#huggingface:hover,
#huggingface:focus,
#redbook:hover,
#redbook:focus {
  animation: shake 0.5s infinite;
}

.accent-maroon {
  color: #8b2e2e;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

.accent-blue {
  color: #1f4e79;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

.logo-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 22px;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.logo-circle {
  width: 78px;
  height: 78px;
  border-radius: 50%;
}

.logo-rect {
  border-radius: 14px;
  padding: 8px 14px;
}

.unsw-badge {
  padding: 4px 8px;
}

.logo-circle:hover,
.logo-circle:focus {
  box-shadow: 0 10px 24px rgba(58, 151, 176, 0.32);
  transform: translateY(-2px);
}

.logo-rect:hover,
.logo-rect:focus {
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(102, 174, 223, 0.34);
  transform: translateY(-2px);
}

.logo-badge img {
  display: block;
  object-fit: contain;
}

.logo-circle img {
  width: 100%;
  height: 100%;
}

.logo-rect img {
  height: 64px;
  width: auto;
  max-width: 150px;
}

.unsw-badge img {
  height: 72px;
  max-width: 140px;
}

hr {
  margin: 28px 0;
  border: none;
  border-top: 2px dashed rgba(63, 61, 61, 0.34);
}

.news-panel {
  max-height: 122px;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0;
  background: #ffffff;
}

.news-list {
  margin: 0;
  color: #111111;
  font-size: 16px;
  line-height: 1.22;
}

.news-list p {
  margin: 0 0 4px;
}

.news-venue {
  color: brown;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

.news-highlight {
  color: #b06a2b;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  display: inline;
}

.news-inline-logo {
  width: 14px;
  height: 14px;
  object-fit: contain;
  vertical-align: -1px;
  margin-right: 3px;
}

.news-inline-logo-rect {
  width: 16px;
  height: 16px;
  vertical-align: -2px;
}

.biography-block {
  margin-top: 26px;
}

.biography-copy {
  max-width: 100%;
  color: #111111;
  font-size: 16px;
}

.biography-copy p {
  margin: 0 0 18px;
  line-height: 1.42;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.news-head {
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
}

.news-head iframe,
.news-head .twitter-follow-button {
  transform: none;
}

.scholar-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 3px;
  background: #5f93f5;
  color: #ffffff;
  font-size: 20px;
  line-height: 1;
  margin-left: 10px;
  vertical-align: middle;
}

.scholar-link:hover,
.scholar-link:focus {
  color: #ffffff;
  background: #4c84ee;
}

.scholar-link .ai-google-scholar:hover,
.scholar-link .ai-google-scholar:focus {
  color: inherit;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.filter-divider {
  color: #8d8d8d;
  font-size: 18px;
}

.filter-button,
.topic-button {
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  padding: 6px 12px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.filter-button {
  background-color: #ccd2cc;
  border-color: #b1acb3;
  color: #161d15;
}

.topic-button {
  background-color: #d4c3aa;
  border-color: #b09279;
  color: #161d15;
}

.filter-button:hover,
.filter-button:focus,
.filter-button.active {
  background-color: #4a7056;
  border-color: #4a7056;
  color: #eff0ea;
}

.topic-button:hover,
.topic-button:focus,
.topic-button.active {
  background-color: #b09279;
  border-color: #b09279;
  color: #eff0ea;
}

.pub-note {
  margin: 2px 0 18px;
  padding: 2px 12px;
  background: #fffbdc;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.publication-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  column-gap: 44px;
  row-gap: 0;
  align-items: center;
}

.paper-side {
  display: flex;
  width: 220px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.paper-media {
  position: relative;
  width: 220px;
  height: 146px;
  border-radius: 10px;
  overflow: hidden;
  background: transparent;
}

.paper-media img,
.paper-media video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.paper-video {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
}

.publication-item:hover .paper-video,
.publication-item:focus-within .paper-video {
  opacity: 1;
}

.paper-authors,
.paper-venue {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.35;
}

.paper-title {
  margin: 0 0 12px;
  color: #000000;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.3;
}

.paper-authors {
  color: #111111;
  font-family: "Optima Medium", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
}

.paper-authors a,
.paper-authors span,
.paper-authors sup {
  font-family: "Optima Medium", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  font-weight: 400;
}

.paper-authors .author-plain {
  cursor: default;
}

.paper-authors .self-author {
  font-family: "Optima Medium", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  color: #111111;
  text-decoration: underline;
  text-underline-offset: 1px;
  font-weight: 400;
}

.paper-venue {
  color: #000000;
  margin: 10px 0;
}

.paper-venue em {
  font-family: "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-style: italic;
  font-size: 15px;
  color: #000000;
}

.venue-short {
  color: brown;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}

.action-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: none;
  border-radius: 15px;
  padding: 5px 10px;
  background-color: #dde8fc;
  color: #1a3f70;
  font-size: 14px;
  font-family: "Optima Medium", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  cursor: pointer;
  text-align: center;
}

.action-pill:hover,
.action-pill:focus {
  background-color: #c7daf9;
  color: #0f3157;
}

.action-pill i {
  font-size: 14px;
  line-height: 1;
}

.github-stars {
  display: block;
  margin-top: -2px;
  margin-left: 8px;
}

.github-stars-raised {
  margin-top: -12px;
}

.bibtex-block {
  margin: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: #111111;
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow: none;
}

.service-list {
  margin: 0;
  padding-left: 24px;
  color: #111111;
}

.service-list li {
  color: #111111;
}

.service-list strong {
  color: #000000;
  font-family: "Optima Bold", "Optima", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.footer-right {
  text-align: center;
  font-size: 14px;
  color: #5b5b5b;
}

.footer-right p {
  margin: 0 0 6px;
}

@media (max-width: 900px) {
  .content {
    width: min(100vw - 24px, 1150px);
    padding: 28px 20px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 20px;
  }

  .hero-photo {
    max-width: 220px;
    margin-left: 0;
  }

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

  .paper-side {
    width: 100%;
  }

  .paper-media {
    width: min(100%, 260px);
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-right {
    text-align: left;
  }
}

@media (max-width: 720px) {
  .site-body {
    padding-top: 130px;
  }

  .site-header {
    padding: 10px 10px 0;
  }

  .site-header-inner {
    height: auto;
    min-height: 64px;
    padding: 14px;
    flex-direction: column;
  }

  .site-mark {
    position: static;
    transform: none;
  }

  .site-nav {
    gap: 8px;
  }

  .site-nav a,
  .site-nav .delimiter {
    font-size: 16px;
  }

  .content {
    width: calc(100vw - 20px);
    margin: 10px auto;
    padding: 22px 16px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 26px;
  }
}