body {
  font-size: 16px;
  line-height: 1.7;
  font-weight: 300;
  color: #333;
  padding-top: 72px;
  background: #fbfbfc;
}

body *::selection {
  background: #2f7abf;
  color: #fff;
}

.container {
  max-width: 900px;
}

.site-topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: #2f7abf;
  z-index: 1031;
}

.site-navbar {
  background: #1f2733;
  border: 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.site-navbar .navbar-brand,
.site-navbar .navbar-nav > li > a {
  color: #f6f8fb !important;
  border-bottom: 0;
}

.site-navbar .navbar-brand {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-navbar .navbar-nav > li.lang-switch-item {
  padding: 15px 0 15px 10px;
}

.lang-switch-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #c5d0dc;
  font-size: 13px;
  line-height: 20px;
}

.lang-switch-wrap .lang-link {
  color: #c5d0dc;
  border-bottom: 0;
}

.lang-switch-wrap .lang-link:hover,
.lang-switch-wrap .lang-link:focus {
  color: #ffffff;
  border-bottom: 0;
}

.lang-switch-wrap .lang-link.is-active {
  color: #ffffff;
  font-weight: 600;
}

.lang-switch-wrap .lang-divider {
  color: #8ea0b4;
}

.site-navbar .navbar-nav > li > a:hover,
.site-navbar .navbar-nav > li > a:focus,
.site-navbar .navbar-nav > li.active > a,
.site-navbar .navbar-nav > .open > a,
.site-navbar .navbar-nav > .open > a:hover,
.site-navbar .navbar-nav > .open > a:focus {
  color: #ffffff !important;
  background: #2f7abf !important;
}

.site-navbar .navbar-nav > li.active > a:hover,
.site-navbar .navbar-nav > li.active > a:focus {
  color: #ffffff !important;
  background: #2f7abf !important;
}

.page-content {
  padding-bottom: 40px;
}

.hero-block,
.page-header-block {
  padding: 30px 0 10px;
}

h1,
h2,
h3 {
  color: #1d2530;
  font-weight: 300;
}

h1 {
  margin: 0 0 10px;
  font-size: 38px;
  line-height: 1.25;
}

h2 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.35;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.4;
}

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

.hero-block h2 {
  margin-bottom: 18px;
  color: #5f6b77;
  font-size: 22px;
}

.hero-line {
  display: inline;
  padding: 0 0.18em 0.06em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.hero-line-primary {
  background: linear-gradient(transparent 58%, rgba(47, 122, 191, 0.18) 58%);
}

.hero-line-secondary {
  background: linear-gradient(transparent 58%, rgba(236, 184, 96, 0.28) 58%);
}

.hero-line-en-primary,
.hero-line-en-secondary {
  padding: 0;
  background: none;
  font-weight: 700;
}

.hero-line-en-primary {
  font-size: 0.78em;
}

.hero-line-en-secondary {
  font-size: 0.68em;
}

.hero-line-zh-primary,
.hero-line-zh-secondary {
  padding: 0;
  background: none;
  font-weight: 700;
}

.hero-line-zh-primary {
  font-size: 0.84em;
}

.hero-line-zh-secondary {
  font-size: 0.76em;
}

.hero-summary {
  max-width: 820px;
  margin: 0 auto;
  color: #57616d;
  text-align: center;
}

.btn-primary {
  background: #2f7abf;
  border-color: #2f7abf;
}

.btn-primary:hover,
.btn-primary:focus {
  background: #27689f;
  border-color: #27689f;
}

.btn-default {
  background: #fff;
  border-color: #ccd6e0;
}

.section-block {
  padding: 26px 0 14px;
}

.section-block[id]::before {
  content: "";
  display: block;
  height: 75px;
  margin-top: -75px;
  visibility: hidden;
}

.section-lead {
  margin-top: -4px;
  margin-bottom: 18px;
  color: #687280;
  font-size: 18px;
}

p {
  text-align: justify;
}

html[lang="zh-CN"] p,
html[lang="zh-CN"] .example-text-body,
html[lang="zh-CN"] .table-note,
html[lang="zh-CN"] .status-note {
  text-align: left;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid #cbd5df;
}

a:hover,
a:focus {
  color: inherit;
  text-decoration: none;
  border-bottom-color: #2f7abf;
}

code {
  padding: 1px 4px;
  color: #223140;
  background: #f2f5f8;
  border-radius: 3px;
  font-size: 0.94em;
}

.panel.track-panel,
.content-card,
.figure-card,
.faq-card {
  margin-bottom: 18px;
  background: #fff;
  border: 1px solid #dde5ec;
  box-shadow: none;
}

.track-panel .panel-heading {
  background: #f6f9fc;
  border-color: #dbe3eb;
}

.track-panel .panel-title {
  color: #223140;
  font-weight: 400;
}

.track-panel .panel-body,
.content-card,
.faq-card {
  padding: 18px 18px 16px;
}

.detail-link {
  font-weight: 400;
}

.figure-card {
  padding: 12px;
}

.figure-card img {
  width: 100%;
  border: 1px solid #e3e8ee;
}

.illustration-figure {
  padding: 0;
  background: transparent;
  border: 0;
}

.illustration-figure img,
.illustration-figure .track2-split-figure {
  border: 0;
}

.figure-card figcaption {
  margin-top: 10px;
  color: #6d7784;
  font-size: 13px;
  text-align: center;
}

.table {
  margin-bottom: 10px;
  background: #fff;
}

.table > thead > tr > th {
  background: #f6f9fc;
  color: #223140;
  font-weight: 600;
}

.table-note,
.status-note {
  color: #6e7782;
  font-size: 14px;
}

.example-caption {
  margin: 0 0 12px;
  color: #4f5c69;
  font-size: 15px;
  font-weight: 400;
  text-align: left;
}

.subtasks-card > h2 {
  margin-bottom: 18px;
}

.subtask-block + .subtask-block {
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid #e3e8ee;
}

.subtask-title {
  margin: 0 0 12px;
  color: #1d2530;
  font-size: 23px;
  font-weight: 600;
  font-style: italic;
  line-height: 1.35;
}

.track-example-table {
  margin-bottom: 6px;
  table-layout: fixed;
}

.track-example-table td {
  padding: 14px 16px !important;
  color: #223140;
  vertical-align: middle !important;
}

.example-text-cell {
  text-align: left;
}

.example-audio-block {
  text-align: left;
}

.example-option-cell {
  vertical-align: top !important;
}

.example-cell-title {
  margin-bottom: 10px;
  color: #223140;
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
}

.example-text-body {
  margin: 0;
  text-align: left;
}

.audio-choice-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.audio-choice-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.audio-choice-item-single {
  max-width: 460px;
  margin: 0 auto;
}

.audio-choice-label {
  flex: 0 0 22px;
  color: #223140;
  font-weight: 400;
  line-height: 1.5;
}

.audio-choice-badge {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  color: #2c8b57;
  background: transparent;
  border: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 24px;
  text-align: center;
}

.audio-choice-badge-placeholder {
  color: transparent;
}

.audio-player {
  display: block;
  width: 100%;
  min-width: 0;
  flex: 1 1 auto;
}

.video-example-wrap {
  max-width: 760px;
  margin: 0 auto;
}

.track2-figure-card {
  max-width: 1060px;
  margin: 0 auto 14px;
}

.track2-split-figure {
  width: 100%;
  padding-top: 42.7%;
  border: 1px solid #e3e8ee;
  background-color: #fff;
  background-image: url("../img/track2/web.png");
  background-repeat: no-repeat;
  background-size: 100% auto;
}

.track2-split-figure-top {
  background-position: center top;
}

.track2-split-figure-bottom {
  background-position: center bottom;
}

.video-player {
  display: block;
  width: 100%;
  border: 1px solid #dbe3eb;
  background: #000;
}

.registration-actions {
  margin: 0 0 14px;
}

.registration-actions .btn {
  min-width: 240px;
}

.metric-list {
  margin-bottom: 0;
}

.submission-list {
  margin-bottom: 0;
  padding-left: 22px;
}

.submission-code {
  margin: 12px 0 0;
  padding: 14px 16px;
  color: #223140;
  background: #f6f9fc;
  border: 1px solid #dbe3eb;
  border-radius: 4px;
  font-size: 14px;
  line-height: 1.7;
}

.submission-code code {
  color: inherit;
  background: transparent;
  font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
  white-space: pre;
}

.submission-note {
  margin-bottom: 14px;
}

.inline-highlight {
  display: inline-block;
  padding: 0 6px;
  color: #8d2e2e;
  background: #fbe6d8;
  border-radius: 999px;
  font-weight: 600;
  line-height: 1.45;
}

.submission-link-list {
  margin-bottom: 0;
}

.alert-info {
  color: #24425f;
  background: #edf5fc;
  border-color: #cfe0ef;
}

.page-toc {
  display: none;
}

@media (min-width: 1280px) {
  .page-toc {
    display: block;
    position: fixed;
    top: 118px;
    left: calc(50% + 470px);
    width: 168px;
    z-index: 1020;
  }
}

.page-toc-toggle {
  display: block;
  width: 100%;
  margin: 0 0 10px;
  padding: 9px 12px;
  color: #223140;
  background: #fff;
  border: 1px solid #dde5ec;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
  text-align: left;
}

.page-toc-toggle:hover,
.page-toc-toggle:focus {
  color: #1f2733;
  background: #f7f9fc;
  border-color: #cfd8e2;
  outline: none;
}

.page-toc-toggle::after {
  content: "▾";
  float: right;
  color: #7a8591;
  font-size: 12px;
  line-height: 1.7;
}

.page-toc.is-collapsed .page-toc-toggle::after {
  content: "▸";
}

.page-toc-panel {
  padding: 14px 16px 12px;
  background: #fff;
  border: 1px solid #dde5ec;
  border-radius: 4px;
}

.page-toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-toc-list li + li {
  margin-top: 8px;
}

.page-toc-list a {
  display: inline-block;
  color: #5d6875;
  border-bottom: 0;
  font-size: 14px;
  line-height: 1.45;
}

.page-toc-list a:hover,
.page-toc-list a:focus {
  color: #2f7abf;
  border-bottom: 0;
}

.page-toc.is-collapsed .page-toc-panel {
  display: none;
}

.dates-table tbody tr.date-past td {
  color: #9aa3ad;
}

.dates-table tbody tr.date-current td {
  color: #b33a3a;
  font-weight: 600;
}

.dates-table tbody tr.date-upcoming td {
  color: #222;
}

.baseline-row td {
  color: #6d7784;
}

.rank-cell {
  width: 76px;
}

.people-grid {
  display: grid;
  gap: 22px 26px;
  align-items: start;
}

.people-grid-organizers {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.people-grid-advisors {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.person-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: auto;
  margin: 0;
  text-align: center;
}

.person-photo {
  display: block;
  width: 88px;
  height: 88px;
  margin: 0 auto 12px;
  border-radius: 50%;
  border: 1px solid #dbe3eb;
  object-fit: cover;
  background: #eef2f7;
}

.person-name {
  margin: 0;
  color: #223140;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.45;
  text-align: center;
}

.person-name a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.person-name a:hover,
.person-name a:focus {
  color: #2f7abf;
  border-bottom-color: currentColor;
}

.person-affiliation {
  margin: 2px 0 0;
  color: #6d7784;
  font-size: 13px;
  line-height: 1.4;
  text-align: center;
}

.faq-card h3 {
  margin-bottom: 8px;
}

.site-footer {
  padding: 18px 0 12px;
  color: #6e7782;
}

@media (max-width: 767px) {
  .site-navbar .navbar-nav > li.lang-switch-item {
    padding: 0 15px 10px;
  }

  body {
    padding-top: 64px;
    font-size: 15px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 24px;
  }

  .hero-line-en-primary {
    font-size: 0.82em;
  }

  .hero-line-en-secondary {
    font-size: 0.72em;
  }

  .hero-line-zh-primary {
    font-size: 0.82em;
  }

  .hero-line-zh-secondary {
    font-size: 0.74em;
  }

  .people-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 16px;
  }

  .track-example-table {
    table-layout: auto;
  }

  .track-example-table td {
    min-width: 240px;
  }

  .audio-choice-item {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .audio-choice-label {
    flex: 0 0 auto;
  }

  .audio-choice-item-single {
    max-width: none;
  }

  .person-card {
    width: auto;
  }

  .person-photo {
    width: 80px;
    height: 80px;
  }
}

@media (min-width: 768px) {
  .hero-line-nowrap {
    white-space: nowrap;
  }
}