html {
  overflow-x: initial !important;
}
:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --select-text-bg-color: #b5d6fc;
  --select-text-font-color: auto;
  --monospace: "Lucida Console", Consolas, "Courier", monospace;
}
html {
  font-size: 14px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body {
  margin: 0px;
  padding: 0px;
  height: auto;
  bottom: 0px;
  top: 0px;
  left: 0px;
  right: 0px;
  font-size: 1rem;
  line-height: 1.42857;
  overflow-x: hidden;
  background: inherit;
  tab-size: 4;
}
iframe {
  margin: auto;
}
a.url {
  word-break: break-all;
}
a:active,
a:hover {
  outline: 0px;
}
.in-text-selection,
::selection {
  text-shadow: none;
  background: var(--select-text-bg-color);
  color: var(--select-text-font-color);
}
#write {
  margin: 0px auto;
  height: auto;
  width: inherit;
  word-break: normal;
  overflow-wrap: break-word;
  position: relative;
  white-space: normal;
  overflow-x: visible;
  padding-top: 40px;
}
#write.first-line-indent p {
  text-indent: 2em;
}
#write.first-line-indent li p,
#write.first-line-indent p * {
  text-indent: 0px;
}
#write.first-line-indent li {
  margin-left: 2em;
}
.for-image #write {
  padding-left: 8px;
  padding-right: 8px;
}
body.typora-export {
  padding-left: 30px;
  padding-right: 30px;
}
.typora-export .footnote-line,
.typora-export li,
.typora-export p {
  white-space: pre-wrap;
}
@media screen and (max-width: 500px) {
  body.typora-export {
    padding-left: 0px;
    padding-right: 0px;
  }
  #write {
    padding-left: 20px;
    padding-right: 20px;
  }
  .CodeMirror-sizer {
    margin-left: 0px !important;
  }
  .CodeMirror-gutters {
    display: none !important;
  }
}
#write li > figure:last-child {
  margin-bottom: 0.5rem;
}
#write ol,
#write ul {
  position: relative;
}
img {
  max-width: 100%;
  vertical-align: middle;
}
button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}
input[type="checkbox"],
input[type="radio"] {
  line-height: normal;
  padding: 0px;
}
*,
::after,
::before {
  box-sizing: border-box;
}
#write h1,
#write h2,
#write h3,
#write h4,
#write h5,
#write h6,
#write p,
#write pre {
  width: inherit;
}
#write h1,
#write h2,
#write h3,
#write h4,
#write h5,
#write h6,
#write p {
  position: relative;
}
p {
  line-height: inherit;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  break-after: avoid-page;
  break-inside: avoid;
  orphans: 2;
}
p {
  orphans: 4;
}
h1 {
  font-size: 2rem;
}
h2 {
  font-size: 1.8rem;
}
h3 {
  font-size: 1.6rem;
}
h4 {
  font-size: 1.4rem;
}
h5 {
  font-size: 1.2rem;
}
h6 {
  font-size: 1rem;
}
.md-math-block,
.md-rawblock,
h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin-top: 1rem;
  margin-bottom: 1rem;
}
.hidden {
  display: none;
}
.md-blockmeta {
  color: rgb(204, 204, 204);
  font-weight: 700;
  font-style: italic;
}
a {
  cursor: pointer;
}
sup.md-footnote {
  padding: 2px 4px;
  background-color: rgba(238, 238, 238, 0.7);
  color: rgb(85, 85, 85);
  border-radius: 4px;
  cursor: pointer;
}
sup.md-footnote a,
sup.md-footnote a:hover {
  color: inherit;
  text-transform: inherit;
  text-decoration: inherit;
}
#write input[type="checkbox"] {
  cursor: pointer;
  width: inherit;
  height: inherit;
}
figure {
  overflow-x: auto;
  margin: 1.2em 0px;
  max-width: calc(100% + 16px);
  padding: 0px;
}
figure > table {
  margin: 0px !important;
}
tr {
  break-inside: avoid;
  break-after: auto;
}
thead {
  display: table-header-group;
}
table {
  border-collapse: collapse;
  border-spacing: 0px;
  width: 100%;
  overflow: auto;
  break-inside: auto;
  text-align: left;
}
table.md-table td {
  min-width: 32px;
}
.CodeMirror-gutters {
  border-right: 0px;
  background-color: inherit;
}
.CodeMirror-linenumber {
  user-select: none;
}
.CodeMirror {
  text-align: left;
}
.CodeMirror-placeholder {
  opacity: 0.3;
}
.CodeMirror pre {
  padding: 0px 4px;
}
.CodeMirror-lines {
  padding: 0px;
}
div.hr:focus {
  cursor: none;
}
#write pre {
  white-space: pre-wrap;
}
#write.fences-no-line-wrapping pre {
  white-space: pre;
}
#write pre.ty-contain-cm {
  white-space: normal;
}
.CodeMirror-gutters {
  margin-right: 4px;
}
.md-fences {
  font-size: 0.9rem;
  display: block;
  break-inside: avoid;
  text-align: left;
  overflow: visible;
  white-space: pre;
  background: inherit;
  position: relative !important;
}
.md-diagram-panel {
  width: 100%;
  margin-top: 10px;
  text-align: center;
  padding-top: 0px;
  padding-bottom: 8px;
  overflow-x: auto;
}
#write .md-fences.mock-cm {
  white-space: pre-wrap;
}
.md-fences.md-fences-with-lineno {
  padding-left: 0px;
}
#write.fences-no-line-wrapping .md-fences.mock-cm {
  white-space: pre;
  overflow-x: auto;
}
.md-fences.mock-cm.md-fences-with-lineno {
  padding-left: 8px;
}
.CodeMirror-line,
twitterwidget {
  break-inside: avoid;
}
.footnotes {
  opacity: 0.8;
  font-size: 0.9rem;
  margin-top: 1em;
  margin-bottom: 1em;
}
.footnotes + .footnotes {
  margin-top: 0px;
}
.md-reset {
  margin: 0px;
  padding: 0px;
  border: 0px;
  outline: 0px;
  vertical-align: top;
  background: 0px 0px;
  text-decoration: none;
  text-shadow: none;
  float: none;
  position: static;
  width: auto;
  height: auto;
  white-space: nowrap;
  cursor: inherit;
  -webkit-tap-highlight-color: transparent;
  line-height: normal;
  font-weight: 400;
  text-align: left;
  box-sizing: content-box;
  direction: ltr;
}
li div {
  padding-top: 0px;
}
blockquote {
  margin: 1rem 0px;
}
li .mathjax-block,
li p {
  margin: 0.5rem 0px;
}
li {
  margin: 0px;
  position: relative;
}
blockquote > :last-child {
  margin-bottom: 0px;
}
blockquote > :first-child,
li > :first-child {
  margin-top: 0px;
}
.footnotes-area {
  color: rgb(136, 136, 136);
  margin-top: 0.714rem;
  padding-bottom: 0.143rem;
  white-space: normal;
}
#write .footnote-line {
  white-space: pre-wrap;
}
@media print {
  body,
  html {
    border: 1px solid transparent;
    height: 99%;
    break-after: avoid;
    break-before: avoid;
  }
  #write {
    margin-top: 0px;
    padding-top: 0px;
    border-color: transparent !important;
  }
  .typora-export * {
    -webkit-print-color-adjust: exact;
  }
  html.blink-to-pdf {
    font-size: 13px;
  }
  .typora-export #write {
    padding-left: 32px;
    padding-right: 32px;
    padding-bottom: 0px;
    break-after: avoid;
  }
  .typora-export #write::after {
    height: 0px;
  }
}
.footnote-line {
  margin-top: 0.714em;
  font-size: 0.7em;
}
a img,
img a {
  cursor: pointer;
}
pre.md-meta-block {
  font-size: 0.8rem;
  min-height: 0.8rem;
  white-space: pre-wrap;
  background: rgb(204, 204, 204);
  display: block;
  overflow-x: hidden;
}
p > .md-image:only-child:not(.md-img-error) img,
p > img:only-child {
  display: block;
  margin: auto;
}
p > .md-image:only-child {
  display: inline-block;
  width: 100%;
}
#write .MathJax_Display {
  margin: 0.8em 0px 0px;
}
.md-math-block {
  width: 100%;
}
.md-math-block:not(:empty)::after {
  display: none;
}
[contenteditable="true"]:active,
[contenteditable="true"]:focus {
  outline: 0px;
  box-shadow: none;
}
.md-task-list-item {
  position: relative;
  list-style-type: none;
}
.task-list-item.md-task-list-item {
  padding-left: 0px;
}
.md-task-list-item > input {
  position: absolute;
  top: 0px;
  left: 0px;
  margin-left: -1.2em;
  margin-top: calc(1em - 10px);
  border: none;
}
.math {
  font-size: 1rem;
}
.md-toc {
  min-height: 3.58rem;
  position: relative;
  font-size: 0.9rem;
  border-radius: 10px;
}
.md-toc-content {
  position: relative;
  margin-left: 0px;
}
.md-toc-content::after,
.md-toc::after {
  display: none;
}
.md-toc-item {
  display: block;
  color: rgb(65, 131, 196);
}
.md-toc-item a {
  text-decoration: none;
}
.md-toc-inner:hover {
  text-decoration: underline;
}
.md-toc-inner {
  display: inline-block;
  cursor: pointer;
}
.md-toc-h1 .md-toc-inner {
  margin-left: 0px;
  font-weight: 700;
}
.md-toc-h2 .md-toc-inner {
  margin-left: 2em;
}
.md-toc-h3 .md-toc-inner {
  margin-left: 4em;
}
.md-toc-h4 .md-toc-inner {
  margin-left: 6em;
}
.md-toc-h5 .md-toc-inner {
  margin-left: 8em;
}
.md-toc-h6 .md-toc-inner {
  margin-left: 10em;
}
@media screen and (max-width: 48em) {
  .md-toc-h3 .md-toc-inner {
    margin-left: 3.5em;
  }
  .md-toc-h4 .md-toc-inner {
    margin-left: 5em;
  }
  .md-toc-h5 .md-toc-inner {
    margin-left: 6.5em;
  }
  .md-toc-h6 .md-toc-inner {
    margin-left: 8em;
  }
}
a.md-toc-inner {
  font-size: inherit;
  font-style: inherit;
  font-weight: inherit;
  line-height: inherit;
}
.footnote-line a:not(.reversefootnote) {
  color: inherit;
}
.md-attr {
  display: none;
}
.md-fn-count::after {
  content: ".";
}
code,
pre,
samp,
tt {
  font-family: var(--monospace);
}
kbd {
  margin: 0px 0.1em;
  padding: 0.1em 0.6em;
  font-size: 0.8em;
  color: rgb(36, 39, 41);
  background: rgb(255, 255, 255);
  border: 1px solid rgb(173, 179, 185);
  border-radius: 3px;
  box-shadow: rgba(12, 13, 14, 0.2) 0px 1px 0px,
    rgb(255, 255, 255) 0px 0px 0px 2px inset;
  white-space: nowrap;
  vertical-align: middle;
}
.md-comment {
  color: rgb(162, 127, 3);
  opacity: 0.8;
  font-family: var(--monospace);
}
code {
  text-align: left;
  vertical-align: initial;
}
a.md-print-anchor {
  white-space: pre !important;
  border-width: initial !important;
  border-style: none !important;
  border-color: initial !important;
  display: inline-block !important;
  position: absolute !important;
  width: 1px !important;
  right: 0px !important;
  outline: 0px !important;
  background: 0px 0px !important;
  text-decoration: initial !important;
  text-shadow: initial !important;
}
.md-inline-math .MathJax_SVG .noError {
  display: none !important;
}
.html-for-mac .inline-math-svg .MathJax_SVG {
  vertical-align: 0.2px;
}
.md-math-block .MathJax_SVG_Display {
  text-align: center;
  margin: 0px;
  position: relative;
  text-indent: 0px;
  max-width: none;
  max-height: none;
  min-height: 0px;
  min-width: 100%;
  width: auto;
  overflow-y: hidden;
  display: block !important;
}
.MathJax_SVG_Display,
.md-inline-math .MathJax_SVG_Display {
  width: auto;
  margin: inherit;
  display: inline-block !important;
}
.MathJax_SVG .MJX-monospace {
  font-family: var(--monospace);
}
.MathJax_SVG .MJX-sans-serif {
  font-family: sans-serif;
}
.MathJax_SVG {
  display: inline;
  font-style: normal;
  font-weight: 400;
  line-height: normal;
  zoom: 90%;
  text-indent: 0px;
  text-align: left;
  text-transform: none;
  letter-spacing: normal;
  word-spacing: normal;
  overflow-wrap: normal;
  white-space: nowrap;
  float: none;
  direction: ltr;
  max-width: none;
  max-height: none;
  min-width: 0px;
  min-height: 0px;
  border: 0px;
  padding: 0px;
  margin: 0px;
}
.MathJax_SVG * {
  transition: none 0s ease 0s;
}
.MathJax_SVG_Display svg {
  vertical-align: middle !important;
  margin-bottom: 0px !important;
  margin-top: 0px !important;
}
.os-windows.monocolor-emoji .md-emoji {
  font-family: "Segoe UI Symbol", sans-serif;
}
.md-diagram-panel > svg {
  max-width: 100%;
}
[lang="mermaid"] svg,
[lang="flow"] svg {
  max-width: 100%;
  height: auto;
}
[lang="mermaid"] .node text {
  font-size: 1rem;
}
table tr th {
  border-bottom: 0px;
}
video {
  max-width: 100%;
  display: block;
  margin: 0px auto;
}
iframe {
  max-width: 100%;
  width: 100%;
  border: none;
}
.highlight td,
.highlight tr {
  border: 0px;
}
svg[id^="mermaidChart"] {
  line-height: 1em;
}

:root {
  --control-text-color: #777;
}
h1,
.h1,
.f1 {
  text-align: center;
  font-size: 2rem;
  line-height: 2.5rem;
}
h2,
.h2,
.f2 {
  font-size: 1.5rem;
  line-height: 2rem;
}
h3,
.h3,
.f3 {
  font-size: 1.25rem;
  line-height: 1.5rem;
}
p,
.p,
.f4,
h4,
h5,
h6,
dl,
ol,
ul,
pre[cid],
div[cid],
#typora-source {
  font-size: 1.125rem;
  line-height: 1.5rem;
}
h4 {
  font-size: 1.13rem;
}
body {
  font-family: Merriweather, "PT Serif", Georgia, "Times New Roman", STSong,
    serif;
  line-height: 1.5rem;
  font-weight: 400;
}
#write {
  max-width: 914px;
  color: rgb(51, 51, 51);
}
img {
  width: auto;
  max-width: 100%;
}
body {
  font-size: 1.5rem;
  box-sizing: border-box;
}
.ty-table-edit {
  background: rgb(237, 237, 237);
}
table {
  width: 100%;
  font-size: 1.125rem;
}
table > thead > tr > th,
table > thead > tr > td,
table > tbody > tr > th,
table > tbody > tr > td,
table > tfoot > tr > th,
table > tfoot > tr > td {
  padding: 12px;
  line-height: 1.2;
  vertical-align: top;
  border-top: 1px solid rgb(51, 51, 51);
}
table > thead > tr > th {
  vertical-align: bottom;
  border-bottom: 2px solid rgb(51, 51, 51);
}
table > caption + thead > tr:first-child > th,
table > caption + thead > tr:first-child > td,
table > colgroup + thead > tr:first-child > th,
table > colgroup + thead > tr:first-child > td,
table > thead:first-child > tr:first-child > th,
table > thead:first-child > tr:first-child > td {
  border-top: 0px;
}
table > tbody + tbody {
  border-top: 2px solid rgb(51, 51, 51);
}
p {
  font-weight: 300;
  line-height: 1.5;
}
abbr {
  border-bottom: 1px dotted black;
  cursor: help;
}
pre,
code {
  font-family: Menlo, Monaco, "Courier New", monospace;
}
code,
.md-fences {
  color: rgb(122, 122, 122);
}
.md-fences {
  padding: 0.5rem 1.125em;
  margin-bottom: 0.88em;
  font-size: 1rem;
  border: 1px solid rgb(122, 122, 122);
}
blockquote {
  padding: 1.33em;
  font-style: italic;
  border-left: 5px solid rgb(122, 122, 122);
  color: rgb(85, 85, 85);
}
blockquote em {
  color: rgb(0, 0, 0);
}
blockquote footer {
  font-size: 0.85rem;
  font-style: normal;
  background-color: rgb(255, 255, 255);
  color: rgb(122, 122, 122);
  border-color: transparent;
}
h1,
.h1,
h2,
.h2,
h3,
.h3,
h4,
.h4,
h5,
.h5,
h6,
.h6 {
  font-family: Lato, "Helvetica Neue", Helvetica, sans-serif;
  font-weight: bold;
  line-height: 1.2;
  margin: 1em 0px 0.5em;
}
@media screen and (min-width: 48em) {
  .h1,
  h1 {
    font-size: 3.25rem;
  }
  .h2,
  h2 {
    font-size: 2.298rem;
  }
  .h3,
  h3 {
    font-size: 1.625rem;
  }
  .h4,
  h4 {
    font-size: 1.3rem;
  }
  #write > h4.md-focus::before,
  #write > h5.md-focus::before,
  #write > h6.md-focus::before {
    top: 1px;
  }
  .p,
  p,
  li {
    font-size: 1.25rem;
    line-height: 1.8;
  }
  table {
    font-size: 1.25rem;
  }
}
@media (max-width: 48em) {
  blockquote {
    margin-left: 1rem;
    margin-right: 0px;
    padding: 0.5em;
  }
  .h1,
  h1 {
    font-size: 2.827rem;
  }
  .h2,
  h2 {
    font-size: 1.999rem;
  }
  .h3,
  h3 {
    font-size: 1.413rem;
  }
  .h4,
  h4 {
    font-size: 1.3rem;
  }
}
@media screen and (min-width: 64em) {
  .h1,
  h1 {
    font-size: 4.498rem;
  }
  .h2,
  h2 {
    font-size: 2.29rem;
  }
  .h3,
  h3 {
    font-size: 1.9rem;
  }
  .h4,
  h4 {
    font-size: 1.591rem;
  }
  #write > h4.md-focus::before {
    top: 4px;
  }
}
a {
  color: rgb(70, 63, 92);
  text-decoration: underline;
}
#write {
  padding-top: 2rem;
}
#write pre.md-meta-block {
  min-height: 35px;
  padding: 2000px 1em 10px 0px;
  white-space: pre;
  border-width: 0px 30px;
  border-top-style: initial;
  border-bottom-style: initial;
  border-top-color: initial;
  border-bottom-color: initial;
  border-image: initial;
  border-left-style: solid;
  border-left-color: rgb(248, 248, 248);
  border-right-style: solid;
  border-right-color: rgb(248, 248, 248);
  width: 100vw;
  max-width: calc(100% + 60px);
  margin-left: -30px;
  margin-bottom: 2em;
  margin-top: -2010px;
  line-height: 1.5em;
  color: rgb(122, 122, 122);
  background-color: rgb(250, 250, 250);
  font-family: Lato, "Helvetica Neue", Helvetica, sans-serif;
  font-weight: 300;
  clear: both;
  font-size: 1.125rem;
}
.md-image > .md-meta {
  color: rgb(70, 63, 92);
}
.footnotes {
  font-size: 1.1rem;
}
.md-tag {
  font-family: Lato, "Helvetica Neue", Helvetica, sans-serif;
}
.code-tooltip {
  background: white;
}
.code-tooltip-content {
  font-size: 1.1rem;
}
.task-list {
  padding-left: 0px;
}
.md-task-list-item {
  padding-left: 34px;
}
.md-task-list-item > input {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
  -webkit-appearance: initial;
  top: -0.2rem;
  margin-left: -1.6em;
  margin-top: calc(1rem - 7px);
  border: none;
}
.md-task-list-item > input:focus {
  outline: none;
  box-shadow: none;
}
.md-task-list-item > input::before {
  border: 1px solid rgb(85, 85, 85);
  border-radius: 1.5rem;
  width: 1.5rem;
  height: 1.5rem;
  background: rgb(255, 255, 255);
  content: " ";
  transition: background-color 200ms ease-in-out 0s;
  display: block;
}
.md-task-list-item > input:checked::before,
.md-task-list-item > input[checked]::before {
  background: rgb(51, 51, 51);
  border-width: 2px;
  display: inline-block;
  transition: background-color 200ms ease-in-out 0s;
}
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}
.md-task-list-item > input::after {
  transition: opacity 0.05s ease-in-out 0s;
  transform: rotate(-45deg);
  position: absolute;
  top: 0.4375rem;
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  width: 0.9375rem;
  height: 0.5rem;
  border-width: 0px 0px 3px 3px;
  border-bottom-style: solid;
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  border-bottom-color: rgb(255, 255, 255);
  border-left-color: rgb(255, 255, 255);
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  border-top-color: initial;
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  border-right-color: initial;
  content: " ";
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}
.md-tag {
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}
.md-toc:focus .md-toc-content {
  margin-top: 19px;
}
#typora-sidebar {
  font-size: 1rem !important;
}
.html-for-mac #typora-sidebar {
  background-color: white;
}
.outline-content li,
.outline-content ul {
  font-size: 1rem !important;
}
.outline-title {
  line-height: inherit;
  margin-top: 10px;
}
.outline-expander {
  width: 18px;
}
.outline-expander::before {
  content: "+";
  font-family: inherit;
  color: rgb(108, 108, 108);
  font-size: 1.5rem;
  top: 0.1rem;
}
.outline-expander:hover::before {
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}
.outline-item-open > .outline-item > .outline-expander::before {
  content: "-";
}
#typora-source {
  font-family: Courier, monospace;
  color: rgb(106, 106, 106);
}
.os-windows #typora-source {
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}
.cm-s-typora-default .cm-header,
.cm-s-typora-default .cm-property,
.CodeMirror.cm-s-typora-default div.CodeMirror-cursor {
  color: rgb(66, 139, 202);
}
.cm-s-typora-default .cm-atom,
.cm-s-typora-default .cm-number {
  color: rgb(119, 119, 119);
}
.md-diagram-panel {
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}
.md-mathjax-midline {
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}
.enable-diagrams pre.md-fences[lang="sequence"] .code-tooltip,
.enable-diagrams pre.md-fences[lang="flow"] .code-tooltip,
.enable-diagrams pre.md-fences[lang="mermaid"] .code-tooltip {
  bottom: -3.4em;
}
.dropdown-menu .divider {
  border-color: rgb(229, 229, 229);
}