:root {
  color:#494e52;
  background:#fff;
  font-family:"Trebuchet MS", Helvetica, sans-serif;
  font-size:15px;
  line-height:1.5;
}

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

html,
body {
  margin:0;
  min-height:100%;
}

body.lightbox-open {
  overflow:hidden;
}

::selection {
  color:#fff;
  background:#000;
}

a {
  color:#224372;
}

a,
a:active {
  text-decoration:none;
}

a:not(.visible-links a):hover,
a:not(.visible-links a):focus {
  text-decoration:underline;
}

.masthead .masthead__homepage-link:hover,
.masthead .masthead__homepage-link:focus {
  text-decoration:none;
}

img {
  display:inline-block;
  max-width:100%;
  height:auto;
  vertical-align:middle;
}

h1,
h2,
h3,
p {
  margin-top:0;
}

h1,
h2,
h3 {
  color:#111827;
  font-weight:700;
  line-height:1.2;
}

strong,
b {
  color:#111827;
  font-weight:900;
}

p {
  margin-bottom:.5em;
}

ul {
  margin:.5em 0;
  padding-left:2em;
}

li {
  margin-bottom:.5em;
}

.icon-definitions {
  display:none;
}

.icon {
  display:inline-block;
  width:1em;
  height:1.1em;
  fill:currentColor;
  line-height:1;
  position:relative;
  top:-.1em;
  vertical-align:middle;
}

.social-icons .icon {
  width:1.25em;
  height:1em;
  color:#000;
}

.social-icons .icon-github {
  color:#171516;
}

.masthead {
  position:sticky;
  top:0;
  z-index:20;
  background:#fff;
  border-bottom:1px solid #f2f3f3;
  animation:intro .3s .15s both;
}

@keyframes intro {
  from { opacity:0; }
  to { opacity:1; }
}

.masthead__inner-wrap,
#main {
  max-width:925px;
  margin:0 auto;
}

.masthead__inner-wrap {
  padding:.5em;
  font-family:"Comic Sans MS", "Comic Sans", cursive;
}

.masthead__menu::after,
#main::after {
  display:table;
  clear:both;
  content:"";
}

.masthead__menu ul {
  margin:0;
  padding:0;
  list-style:none;
}

.greedy-nav {
  position:relative;
  min-height:2.5rem;
  background:#fff;
}

.greedy-nav a,
.masthead__homepage-link {
  color:#7a8288;
  font-size:1em;
  font-weight:400;
  text-decoration:none;
}

.greedy-nav a:hover,
.masthead__homepage-link:hover {
  color:#5c6266;
  text-decoration:none;
}

.nav-toggle {
  position:absolute;
  top:0;
  right:0;
  z-index:2;
  width:3rem;
  height:2.5rem;
  padding:0;
  border:0;
  background:#7a8288;
  cursor:pointer;
}

.navicon,
.navicon::before,
.navicon::after {
  position:absolute;
  left:50%;
  width:28px;
  height:4px;
  background:#fff;
  content:"";
  transform:translateX(-50%);
  transition:transform .3s, background .3s;
}

.navicon {
  top:calc(50% - 2px);
}

.navicon::before {
  top:-8px;
}

.navicon::after {
  top:8px;
}

.nav-open .navicon {
  background:transparent;
}

.nav-open .navicon::before {
  transform:translateX(-50%) translateY(8px) rotate(45deg);
}

.nav-open .navicon::after {
  transform:translateX(-50%) translateY(-8px) rotate(-45deg);
}

.visible-links {
  position:absolute;
  top:100%;
  right:0;
  display:none;
  min-width:12rem;
  margin-top:15px !important;
  border:1px solid #f2f3f3;
  border-radius:4px;
  box-shadow:0 0 10px rgba(0, 0, 0, .25);
}

.nav-open .visible-links {
  display:block;
}

@media (max-width:47.9375em) {
  .visible-links {
    z-index:10;
    background:#fff;
    font-family:"Trebuchet MS", Helvetica, sans-serif;
  }

  .visible-links a {
    font-family:"Trebuchet MS", Helvetica, sans-serif;
    font-size:.95em;
  }
}

.visible-links li {
  border-bottom:1px solid #f2f3f3;
  list-style:none;
}

.visible-links li:last-child {
  border-bottom:0;
}

.visible-links a {
  display:block;
  padding:.65rem 1rem;
}

.visible-links a:hover {
  background:#dee0e1;
}

.masthead__homepage-link {
  display:none;
}

#main {
  margin-top:1em;
  padding:0 1em;
  animation:intro .3s .35s both;
}

.sidebar {
  margin-bottom:1em;
}

.profile_box {
  display:flex;
  align-items:center;
}

.author__avatar {
  width:75px;
}

.author__avatar img {
  min-width:75px;
  max-width:175px;
  border-radius:50%;
}

.author__content {
  min-width:120px;
  padding-left:10px;
  line-height:1;
}

.author__name {
  margin:0;
  color:#111827;
  font-size:1.2em;
}

.author__urls-wrapper {
  margin-left:auto;
  font-family:"Trebuchet MS", Helvetica, sans-serif;
}

.author__urls {
  display:none;
  margin:0;
  padding:0;
  list-style:none;
  font-size:.92em;
}

.author__urls li {
  margin:0;
  white-space:nowrap;
}

.author__urls a {
  display:block;
  padding:2px 5px 2px 0;
  color:inherit;
  text-decoration:none;
}

.author__urls.social-icons a:hover,
.author__urls.social-icons a:focus,
.author__urls-wrapper .author__urls_sm a:hover,
.author__urls-wrapper .author__urls_sm a:focus {
  text-decoration:none;
}

.author__urls a:hover .link-label,
.author__urls a:focus .link-label {
  text-decoration:underline;
}

.author__urls_sm {
  display:block;
  padding:.25em;
  font-size:1.75em;
}

.author__urls_sm a {
  color:inherit;
  text-decoration:none;
}

.page__content {
  font-size:.95em;
}

.page__content #about-me {
  margin-top:-10em;
}

.page__content #about-me::before {
  display:block;
  width:0;
  height:10em;
  margin-top:-10em;
  content:"";
}

.page__content h1 {
  margin:1em 0 .25em;
  padding-bottom:.25em;
  border-bottom:2px solid #2d5998;
  font-size:1.25em;
}

.page__content h1:not(:first-of-type) {
  margin-top:1.5em;
}

.page__content #news + ul {
  margin-top:.25em;
  padding-left:0;
  list-style:none;
}

.page__content h1 + p {
  margin-top:.25em;
}

.page__content a:hover img {
  box-shadow:0 0 10px rgba(0, 0, 0, .25);
}

h1::before,
.anchor::before {
  display:block;
  width:0;
  height:2em;
  margin-top:-2em;
  content:"";
}

.paper-box {
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  padding:1.5em 0;
  border-bottom:1px solid #efefef;
}

.page__content h1 + .paper-box {
  padding-top:.25em;
}

.paper-box--last {
  border-bottom:0;
}

.paper-box-image {
  display:flex;
  justify-content:center;
  order:2;
  width:100%;
}

.paper-box-image img {
  width:100%;
  max-width:250px;
  box-shadow:3px 3px 6px #888;
  object-fit:cover;
}

.paper-box-text {
  order:1;
  max-width:100%;
}

/* On phones, show each paper figure before its text. */
@media (max-width:47.9375em) {
  .paper-box-text {
    order:2;
  }

  .paper-box-image {
    order:1;
    margin-bottom:1em;
  }

  .paper-box-image img {
    max-width:none;
  }

}

.paper-title {
  margin:0 0 .7em;
  font-size:1em;
}

.paper-meta {
  margin:0 0 .45em;
  font-size:.9em;
  line-height:1.45;
}

.paper-links {
  margin:.8em 0 0;
  font-size:.9em;
}

.paper-link {
  text-decoration:none !important;
}

.paper-links .paper-link:hover,
.paper-links .paper-link:focus {
  text-decoration-line:underline !important;
}

.paper-link + .paper-link {
  margin-left:.25em;
}

.education-list {
  margin:.25em 0 0;
  padding:0;
  list-style:none;
}

.education-list > li {
  margin-bottom:1em;
  padding-left:.2em;
}

.education-entry {
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.35em;
}

.news-date,
.education-date {
  color:#111827;
  font-weight:900;
}

.education-separator {
  color:#7a8288;
}

.education-logo {
  flex:0 0 2em;
  width:2em;
  height:2em;
  object-fit:contain;
}

.education-logo--wit {
  object-fit:cover;
  object-position:left center;
}

.education-degree {
  margin-left:.3em;
}

.sensetime-logo {
  display:inline-block;
  width:3.4em;
  margin-right:.15em;
  vertical-align:-.35em;
  object-fit:contain;
}

.site-footer {
  margin-top:3em;
  border-top:1px solid #efefef;
  color:#7a8288;
}

.site-footer__inner {
  padding:2em 0 2.5em;
}

.site-footer p {
  margin:0;
  font-size:.8em;
}

.site-footer a {
  color:inherit;
}

.image-lightbox {
  position:fixed;
  inset:0;
  z-index:100;
  display:grid;
  place-items:center;
  padding:2rem;
  background:rgba(0, 0, 0, .8);
}

.image-lightbox[hidden] {
  display:none;
}

.image-lightbox img {
  max-width:min(90vw, 900px);
  max-height:85vh;
  box-shadow:0 4px 24px rgba(0, 0, 0, .5);
}

.image-lightbox__close {
  position:absolute;
  top:1rem;
  right:1rem;
  width:2.5rem;
  height:2.5rem;
  border:0;
  border-radius:50%;
  color:#fff;
  background:rgba(0, 0, 0, .55);
  font-size:2rem;
  line-height:1;
  cursor:pointer;
}

@media (min-width:48em) {
  .sidebar .author__name {
    font-size:1.2em;
  }

  .paper-box-image {
    justify-content:flex-start;
    order:1;
    flex:0 0 250px;
    width:250px;
  }

  .paper-box-text {
    order:2;
    flex:1 1 0;
    max-width:calc(100% - 250px);
    padding-left:3em;
  }
}

@media (min-width:57.8125em) {
  .masthead__inner-wrap {
    position:relative;
    padding-right:1em;
    padding-left:1em;
  }

  .masthead__menu {
    margin-left:20.833%;
  }

  .nav-toggle {
    display:none;
  }

  .visible-links {
    position:static;
    display:flex;
    min-width:0;
    margin-top:0 !important;
    border:0;
    border-radius:0;
    box-shadow:none;
  }

  .visible-links li {
    border:0;
  }

  .visible-links a {
    position:relative;
    padding:.5rem 0;
  }

  .visible-links li + li a {
    margin-left:1.5rem;
  }

  .visible-links a::before {
    position:absolute;
    right:0;
    bottom:0;
    left:0;
    height:4px;
    background:#bdc1c4;
    content:"";
    transform:scaleX(0);
    transition:transform .2s ease-in-out;
  }

  .visible-links a:hover {
    background:transparent;
  }

  .visible-links a:hover::before {
    transform:scaleX(1);
  }

  .masthead__homepage-link {
    position:absolute;
    top:.5em;
    left:0;
    display:block;
    width:16.667%;
    padding:.5rem 0;
    text-align:center;
  }

  #main {
    padding:0 1em;
  }

  .sidebar {
    float:left;
    width:15.2542372881%;
    margin-right:1.6949152542%;
  }

  .sticky {
    position:sticky;
    top:6em;
  }

  .profile_box {
    display:block;
  }

  .author__avatar {
    width:auto;
  }

  .author__avatar img {
    padding:5px;
    border:1px solid #f2f3f3;
  }

  .author__content {
    padding:0;
  }

  .author__name {
    margin:10px 0;
  }

  .author__urls {
    display:block;
    margin-top:1.25em;
  }

  .author__urls_sm {
    display:none;
  }

  .page {
    float:right;
    width:83.0508474576%;
    padding-left:4.2372881356%;
  }

  .page__content {
    max-width:calc(100% - 5.5em);
  }
}

@media (min-width:80em) {
  .masthead__inner-wrap,
  #main {
    max-width:1280px;
  }
}