@import url(https://cdn.jsdelivr.net/npm/jetbrains-mono@1.0.6/css/jetbrains-mono-nl.css);
@import url(https://cdn.jsdelivr.net/npm/cn-fontsource-source-han-sans-sc-vf@1.0.10/font.min.css);
/* 我真的很想用霞鹜文楷。 */

:root {
  --r-main-font: "Helvetica", "Source Han Sans SC VF", sans-serif;
  --r-heading-font: "Helvetica", "Source Han Sans SC VF", sans-serif;
  --r-code-font: "JetBrains Mono NL", sans-serif;
}

.reveal img {
  display: block;
  margin: 0 auto;
}

.reveal .slide-number {
  font-size: 26px;
  border-radius: 5px;
  background-color: rgba(0, 0, 0, .4);
}

.reveal .slides {
  border: 1.5px rgba(0, 0, 0, .25) solid;
  border-radius: 7px;
  text-align: left;
  font-weight: 400;
}

html.reveal-print .reveal .slides {
  border: none !important;
  border-radius: 0 !important;
}

.reveal section {
  padding: 20px 0;
}

.reveal p,
.reveal li,
.reveal center {
  font-size: 25px;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
  font-weight: 900;
}

.reveal p,
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5 {
  padding: 0 25px 0 25px;
}

.reveal pre {
  font-size: 20px;
  border-radius: 3mm;
}

.reveal pre code {
  max-height: none;
  border-radius: 3mm;
  padding: 20px;
  line-height: 28px;
}

.reveal pre code table {
  font-size: inherit;
}

.reveal ul {
  margin: 0 0 0 1.5em
}

.reveal ol {
  margin: 0 0 0 2em;
}

.reveal li {
  margin-top: 10px;
}

.reveal li+li {
  margin-top: 10px;
}

.reveal ul {
  display: block;
  margin-right: 15px;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  text-align: left;
  margin: 0 0 20px 0;
  color: #222;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: normal;
}

.reveal h1 {
  margin: 0 10 0 10;
  font-size: 55px;
}

.reveal .middle h1 {
  text-align: center;
}

.reveal h2 {
  font-size: 48px;
  border-bottom: 2px solid rgb(0, 63, 163);
  padding-bottom: 20px;
}

.reveal h3 {
  font-size: 1.15em;
}

.reveal h4 {
  font-size: 1.05em;
}

.reveal .center {
  text-align: center;
}

.reveal .middle {
  height: 660px;
  display: flex;
  align-items: center;
  width: 100%;
}

section .center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.reveal hr {
  border: 10px solid white;
}

.reveal .middle hr {
  border: 0;
  height: 2px;
  background: radial-gradient(ellipse at center, rgba(1, 14, 54, 0.324) 0, hsla(0, 0%, 100%, 0) 75%);
  margin-bottom: 40px;
}

.reveal table {
  font-size: 25px;
  margin-top: 15px;
  margin-bottom: 15px;
}

.three-line {
  text-align: center;
}

.three-line>table {
  border-top: 1.5pt solid;
  border-bottom: 1.5pt solid;
  text-align: center;
  page-break-inside: avoid;
  display: inline-table !important;
}

.three-line>table>tbody>tr>td {
  border: none;
  padding: 7px 15px;
}

.three-line>table>tbody>tr {
  border: none;
  padding: 7px;
}

.three-line>table>thead {
  border-bottom: 0.75pt solid;
  font-size: 0.9em;
}

.three-line>table th {
  border: none;
}

section>table {
  border: 1.5pt solid;
  text-align: center;
  page-break-inside: avoid;
}

section>table>tbody>tr>td {
  border: 0.75pt solid;
  padding: 7px;
}

section>table>tbody>tr {
  border: 0.75pt solid;
  padding: 7px;
}

section>table>thead {
  border: 0.75pt solid;
  font-size: 0.9em;
}

section>table th {
  border: 0.75px solid;
}

.reveal .mul-cols {
  display: flex;
}

.reveal .mul-cols .col {
  width: 100%
}


.reveal .row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.reveal .row .col {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  display: -webkit-box;
  display: -ms-flexbox;
  /*! display: flex; */
  -webkit-box-orient: vertical;
  /*! -webkit-box-direction: normal; */
      -ms-flex-direction: column;
          /*! flex-direction: column; */
}
.reveal .row .col:first-child {
  padding-right: 10px;
}
.reveal .row .col:last-child {
  padding-left: 10px;
}

html.print-pdf .reveal pre code {
  font-family: var(--r-code-font) !important;
}

/**
 * Modified from https://github.com/sivan/heti
 */

.reveal heti-spacing {
  display: inline;
}

.reveal heti-spacing+sup,
.reveal heti-spacing+sub {
  margin-inline-start: 0;
}

.reveal .heti-spacing {
  font-size: 0.5em;
  vertical-align: top;
}

.reveal .heti-spacing-start {
  margin-inline-end: 0.25em;
}

.reveal .heti-spacing-end {
  margin-inline-start: 0.25em;
}

.reveal heti-adjacent {
  display: inline;
}

.reveal .heti-adjacent-half {
  margin-inline-end: -0.5em;
}

.reveal .heti-adjacent-quarter {
  margin-inline-end: -0.25em;
}

.reveal .slide-number {
  left: 8px;
  right: unset;
}

.MathJax .math {
  font-size: 80%;
}

.katex {
  font-size: 1em;
}

.reveal .slide-menu-button {
  top: 30px;
}

.slide-menu-wrapper .slide-menu {
  background-color: #fff !important;
}

.slide-menu-wrapper .active-menu-panel li.active {
  color: #000 !important;
}

.slide-menu-wrapper .slide-menu-item,
.slide-menu-wrapper .slide-menu-item-vertical {
  color: #555 !important;
}

.slide-menu-wrapper .active-menu-panel li.selected {
  background-color: #ddd !important;
  color: #000 !important;
}

.slide-menu-wrapper .slide-menu-item {
  border-top: none !important;
}

.slide-menu-wrapper .slide-menu-items {
  border-bottom: none !important;
}

.slide-menu-wrapper .slide-menu-panel a {
  color: #000 !important;
}

.slide-menu-wrapper .slide-menu-toolbar>li {
  color: #777 !important;
}

.slide-menu-wrapper .slide-menu-toolbar>li.active-toolbar-button {
  color: #000 !important;
  text-shadow: 0 1px white !important;
}

.slide-menu-wrapper .slide-menu-overlay.active {
  opacity: 0.3 !important;
}

.slide-menu-wrapper .slide-menu.slide-menu--wide {
  width: 450px !important;
}

.reveal blockquote {
  width: 80%;
  font-style: normal;
  /* background-color: #eef4ff; */
  background-color: white;
  border-radius: 5px;
  box-shadow: #0002 0 2px 6px;
  border-left-width: 5px;
  border-left-color: #007bff;
  border-left-style: outset;
}

div {
  border-radius: 7px;
}

del {
  text-decoration-thickness: 8%;
}

.reveal .overlay {
  backdrop-filter: none;
}

/* Controls */

#customcontrols ul {
  left: 10px !important;
  top: 70px !important;
  bottom: auto !important;
}

#customcontrols ul > li {
  margin: 5px !important;
  padding: 5px !important;
  float: none !important;
}

#customcontrols {
  bottom: auto !important;
  top: 30px !important;
}

@media print {
  .customcontrols {
    display: none;
  }
}

/* Menu */

.slide-menu-wrapper {
  font-family: 'Source Sans Pro', Helvetica, sans-serif;
}

.slide-menu-wrapper .slide-menu {
  background-color: #333;
  z-index: 200;
  position: fixed;
  top: 0;
  width: 300px;
  height: 100%;
  /*overflow-y: scroll;*/
  transition: transform 0.3s;
  font-size: 16px;
  font-weight: normal;
}

.slide-menu-wrapper .slide-menu.slide-menu--wide {
  width: 500px;
}

.slide-menu-wrapper .slide-menu.slide-menu--third {
  width: 33%;
}

.slide-menu-wrapper .slide-menu.slide-menu--half {
  width: 50%;
}

.slide-menu-wrapper .slide-menu.slide-menu--full {
  width: 95%;
}

/*
 * Slides menu
 */

.slide-menu-wrapper .slide-menu-items {
  margin: 0;
  padding: 0;
  width: 100%;
  border-bottom: solid 1px #555;
}

.slide-menu-wrapper .slide-menu-item,
.slide-menu-wrapper .slide-menu-item-vertical {
  display: block;
  text-align: left;
  padding: 10px 18px;
  color: #aaa;
  cursor: pointer;
}

.slide-menu-wrapper .slide-menu-item-vertical {
  padding-left: 30px;
}

.slide-menu-wrapper .slide-menu--wide .slide-menu-item-vertical,
.slide-menu-wrapper .slide-menu--third .slide-menu-item-vertical,
.slide-menu-wrapper .slide-menu--half .slide-menu-item-vertical,
.slide-menu-wrapper .slide-menu--full .slide-menu-item-vertical,
.slide-menu-wrapper .slide-menu--custom .slide-menu-item-vertical {
  padding-left: 50px;
}

.slide-menu-wrapper .slide-menu-item {
  border-top: solid 1px #555;
}

.slide-menu-wrapper .active-menu-panel li.selected {
  background-color: #222;
  color: white;
}

.slide-menu-wrapper .active-menu-panel li.active {
  color: #eee;
}

.slide-menu-wrapper .slide-menu-item.no-title .slide-menu-item-title,
.slide-menu-wrapper .slide-menu-item-vertical.no-title .slide-menu-item-title {
  font-style: italic;
}

.slide-menu-wrapper .slide-menu-item-number {
  color: #999;
  padding-right: 6px;
}

.slide-menu-wrapper .slide-menu-item i.far,
.slide-menu-wrapper .slide-menu-item i.fas,
.slide-menu-wrapper .slide-menu-item-vertical i.far,
.slide-menu-wrapper .slide-menu-item-vertical i.fas,
.slide-menu-wrapper .slide-menu-item svg.svg-inline--fa,
.slide-menu-wrapper .slide-menu-item-vertical svg.svg-inline--fa {
  padding-right: 12px;
  display: none;
}

.slide-menu-wrapper .slide-menu-item.past i.fas.past,
.slide-menu-wrapper .slide-menu-item-vertical.past i.fas.past,
.slide-menu-wrapper .slide-menu-item.active i.fas.active,
.slide-menu-wrapper .slide-menu-item-vertical.active i.fas.active,
.slide-menu-wrapper .slide-menu-item.future i.far.future,
.slide-menu-wrapper .slide-menu-item-vertical.future i.far.future,
.slide-menu-wrapper .slide-menu-item.past svg.svg-inline--fa.past,
.slide-menu-wrapper .slide-menu-item-vertical.past svg.svg-inline--fa.past,
.slide-menu-wrapper .slide-menu-item.active svg.svg-inline--fa.active,
.slide-menu-wrapper .slide-menu-item-vertical.active svg.svg-inline--fa.active,
.slide-menu-wrapper .slide-menu-item.future svg.svg-inline--fa.future,
.slide-menu-wrapper .slide-menu-item-vertical.future svg.svg-inline--fa.future {
  display: inline-block;
}

.slide-menu-wrapper .slide-menu-item.past i.fas.past,
.slide-menu-wrapper .slide-menu-item-vertical.past i.fas.past,
.slide-menu-wrapper .slide-menu-item.future i.far.future,
.slide-menu-wrapper .slide-menu-item-vertical.future i.far.future,
.slide-menu-wrapper .slide-menu-item.past svg.svg-inline--fa.past,
.slide-menu-wrapper .slide-menu-item-vertical.past svg.svg-inline--fa.past,
.slide-menu-wrapper .slide-menu-item.future svg.svg-inline--fa.future,
.slide-menu-wrapper .slide-menu-item-vertical.future svg.svg-inline--fa.future {
  opacity: 0.4;
}

.slide-menu-wrapper .slide-menu-item.active i.fas.active,
.slide-menu-wrapper .slide-menu-item-vertical.active i.fas.active,
.slide-menu-wrapper .slide-menu-item.active svg.svg-inline--fa.active,
.slide-menu-wrapper .slide-menu-item-vertical.active svg.svg-inline--fa.active {
  opacity: 0.8;
}

.slide-menu-wrapper .slide-menu--left {
  left: 0;
  -webkit-transform: translateX(-100%);
  -ms-transform: translateX(-100%);
  transform: translateX(-100%);
}

.slide-menu-wrapper .slide-menu--left.active {
  -webkit-transform: translateX(0);
  -ms-transform: translateX(0);
  transform: translateX(0);
}

.slide-menu-wrapper .slide-menu--right {
  right: 0;
  -webkit-transform: translateX(100%);
  -ms-transform: translateX(100%);
  transform: translateX(100%);
}

.slide-menu-wrapper .slide-menu--right.active {
  -webkit-transform: translateX(0);
  -ms-transform: translateX(0);
  transform: translateX(0);
}

.slide-menu-wrapper {
  transition: transform 0.3s;
}

/*
 * Toolbar
 */
.slide-menu-wrapper .slide-menu-toolbar {
  height: 60px;
  width: 100%;
  font-size: 12px;
  display: table;
  table-layout: fixed; /* ensures equal width */
  margin: 0;
  padding: 0;
  border-bottom: solid 2px #666;
}

.slide-menu-wrapper .slide-menu-toolbar > li {
  display: table-cell;
  line-height: 150%;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  color: #aaa;
  border-radius: 3px;
}

.slide-menu-wrapper .slide-menu-toolbar > li.toolbar-panel-button i,
.slide-menu-wrapper
  .slide-menu-toolbar
  > li.toolbar-panel-button
  svg.svg-inline--fa {
  font-size: 1.7em;
}

.slide-menu-wrapper .slide-menu-toolbar > li.active-toolbar-button {
  color: white;
  text-shadow: 0 1px black;
  text-decoration: underline;
}

.slide-menu-toolbar > li.toolbar-panel-button:hover {
  color: white;
}

.slide-menu-toolbar
  > li.toolbar-panel-button:hover
  span.slide-menu-toolbar-label,
.slide-menu-wrapper
  .slide-menu-toolbar
  > li.active-toolbar-button
  span.slide-menu-toolbar-label {
  visibility: visible;
}

/*
 * Panels
 */
.slide-menu-wrapper .slide-menu-panel {
  position: absolute;
  width: 100%;
  visibility: hidden;
  height: calc(100% - 60px);
  overflow-x: hidden;
  overflow-y: auto;
  color: #aaa;
}

.slide-menu-wrapper .slide-menu-panel.active-menu-panel {
  visibility: visible;
}

.slide-menu-wrapper .slide-menu-panel h1,
.slide-menu-wrapper .slide-menu-panel h2,
.slide-menu-wrapper .slide-menu-panel h3,
.slide-menu-wrapper .slide-menu-panel h4,
.slide-menu-wrapper .slide-menu-panel h5,
.slide-menu-wrapper .slide-menu-panel h6 {
  margin: 20px 0 10px 0;
  color: #fff;
  line-height: 1.2;
  letter-spacing: normal;
  text-shadow: none;
}

.slide-menu-wrapper .slide-menu-panel h1 {
  font-size: 1.6em;
}
.slide-menu-wrapper .slide-menu-panel h2 {
  font-size: 1.4em;
}
.slide-menu-wrapper .slide-menu-panel h3 {
  font-size: 1.3em;
}
.slide-menu-wrapper .slide-menu-panel h4 {
  font-size: 1.1em;
}
.slide-menu-wrapper .slide-menu-panel h5 {
  font-size: 1em;
}
.slide-menu-wrapper .slide-menu-panel h6 {
  font-size: 0.9em;
}

.slide-menu-wrapper .slide-menu-panel p {
  margin: 10px 0 5px 0;
}

.slide-menu-wrapper .slide-menu-panel a {
  color: #ccc;
  text-decoration: underline;
}

.slide-menu-wrapper .slide-menu-panel a:hover {
  color: white;
}

.slide-menu-wrapper .slide-menu-item a {
  text-decoration: none;
}

.slide-menu-wrapper .slide-menu-custom-panel {
  width: calc(100% - 20px);
  padding-left: 10px;
  padding-right: 10px;
}

.slide-menu-wrapper .slide-menu-custom-panel .slide-menu-items {
  width: calc(100% + 20px);
  margin-left: -10px;
  margin-right: 10px;
}

/*
 * Theme and Transitions buttons
 */

.slide-menu-wrapper div[data-panel='Themes'] li,
.slide-menu-wrapper div[data-panel='Transitions'] li {
  display: block;
  text-align: left;
  cursor: pointer;
  color: #848484;
}

/*
 * Menu controls
 */
.reveal .slide-menu-button {
  position: fixed;
  left: 30px;
  bottom: 30px;
  z-index: 30;
  font-size: 24px;
}

/*
 * Menu overlay
 */

.slide-menu-wrapper .slide-menu-overlay {
  position: fixed;
  z-index: 199;
  top: 0;
  left: 0;
  overflow: hidden;
  width: 0;
  height: 0;
  background-color: #000;
  opacity: 0;
  transition: opacity 0.3s, width 0s 0.3s, height 0s 0.3s;
}

.slide-menu-wrapper .slide-menu-overlay.active {
  width: 100%;
  height: 100%;
  opacity: 0.7;
  transition: opacity 0.3s;
}

/*
 * Hide menu for pdf printing
 */
/* html.print-pdf ** .slide-menu-wrapper .slide-menu,
html.print-pdf * .slide-menu-button,
html.print-pdf * .slide-menu-wrapper .slide-menu-overlay {
  display: none;
} */

@media print {
  .slide-menu-button {
    display: none;
  } 

}