/*from: https://cloud.tencent.com/developer/article/1774705 
https://sindresorhus.com/github-markdown-css/*/

body {
    /* font-family: "Microsoft Yahei", Helvetica, arial, sans-serif ;
  font-size: 14px;
  line-height: 1.6; */
    padding-top: 10px;
    padding-bottom: 10px;
    background-color: white;
    padding: 30px;
    /* color: #516272; */
    font-size: 14px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    line-height: 1.5;
    word-wrap: break-word;
}

body>*:first-child {
    margin-top: 0 !important;
}

body>*:last-child {
    margin-bottom: 0 !important;
}

a {
    color: #0969da;
    text-decoration: none;
    /* color: #4183C4;  */
}

a.absent {
    color: #cc0000;
}

a.anchor {
    display: block;
    padding-left: 30px;
    margin-left: -30px;
    cursor: pointer;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 20px 0 10px;
    padding: 0;
    font-weight: bold;
    -webkit-font-smoothing: antialiased;
    cursor: text;
    position: relative;
}

h1:hover a.anchor,
h2:hover a.anchor,
h3:hover a.anchor,
h4:hover a.anchor,
h5:hover a.anchor,
h6:hover a.anchor {
    background: url(data:image/png;base64,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) no-repeat 10px center;
    text-decoration: none;
}

h1 tt,
h1 code {
    font-size: inherit;
}

h2 tt,
h2 code {
    font-size: inherit;
}

h3 tt,
h3 code {
    font-size: inherit;
}

h4 tt,
h4 code {
    font-size: inherit;
}

h5 tt,
h5 code {
    font-size: inherit;
}

h6 tt,
h6 code {
    font-size: inherit;
}

h1 {
    font-size: 28px;
    color: #2B3F52;
    /* color: #641818;
border-bottom: 1px solid #d0d0d0;
font-size: 25px;
line-height: 38px; */
}

h2 {
    font-size: 24px;
    border-bottom: 1px solid #DDE4E9;
    color: #2B3F52;
    line-height: 30px;
}

h3 {
    font-size: 18px;
    color: #2B3F52;
}

h4 {
    font-size: 16px;
    color: #2B3F52;
}

h5 {
    font-size: 14px;
    color: #2B3F52;
}

h6 {
    color: #2B3F52;
    font-size: 14px;
}

p,
blockquote,
ul,
ol,
dl,
li,
table,
pre {
    margin: 15px 0;
    /* color: #516272;   */
}

hr {
    background: transparent url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAYAAAAECAYAAACtBE5DAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyJpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMC1jMDYwIDYxLjEzNDc3NywgMjAxMC8wMi8xMi0xNzozMjowMCAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENTNSBNYWNpbnRvc2giIHhtcE1NOkluc3RhbmNlSUQ9InhtcC5paWQ6OENDRjNBN0E2NTZBMTFFMEI3QjRBODM4NzJDMjlGNDgiIHhtcE1NOkRvY3VtZW50SUQ9InhtcC5kaWQ6OENDRjNBN0I2NTZBMTFFMEI3QjRBODM4NzJDMjlGNDgiPiA8eG1wTU06RGVyaXZlZEZyb20gc3RSZWY6aW5zdGFuY2VJRD0ieG1wLmlpZDo4Q0NGM0E3ODY1NkExMUUwQjdCNEE4Mzg3MkMyOUY0OCIgc3RSZWY6ZG9jdW1lbnRJRD0ieG1wLmRpZDo4Q0NGM0E3OTY1NkExMUUwQjdCNEE4Mzg3MkMyOUY0OCIvPiA8L3JkZjpEZXNjcmlwdGlvbj4gPC9yZGY6UkRGPiA8L3g6eG1wbWV0YT4gPD94cGFja2V0IGVuZD0iciI/PqqezsUAAAAfSURBVHjaYmRABcYwBiM2QSA4y4hNEKYDQxAEAAIMAHNGAzhkPOlYAAAAAElFTkSuQmCC) repeat-x 0 0;
    border: 0 none;
    color: #cccccc;
    height: 4px;
    padding: 0;
}

body>h2:first-child {
    margin-top: 0;
    padding-top: 0;
}

body>h1:first-child {
    margin-top: 0;
    padding-top: 0;
}

body>h1:first-child+h2 {
    margin-top: 0;
    padding-top: 0;
}

body>h3:first-child,
body>h4:first-child,
body>h5:first-child,
body>h6:first-child {
    margin-top: 0;
    padding-top: 0;
}

a:first-child h1,
a:first-child h2,
a:first-child h3,
a:first-child h4,
a:first-child h5,
a:first-child h6 {
    margin-top: 0;
    padding-top: 0;
}

h1 p,
h2 p,
h3 p,
h4 p,
h5 p,
h6 p {
    margin-top: 0;
}

li p.first {
    display: inline-block;
}

li {
    margin: 0;
}

ul,
ol {
    padding-left: 30px;
}

ul :first-child,
ol :first-child {
    margin-top: 0;
}

dl {
    padding: 0;
}

dl dt {
    font-size: 14px;
    font-weight: bold;
    font-style: italic;
    padding: 0;
    margin: 15px 0 5px;
}

dl dt:first-child {
    padding: 0;
}

dl dt> :first-child {
    margin-top: 0;
}

dl dt> :last-child {
    margin-bottom: 0;
}

dl dd {
    margin: 0 0 15px;
    padding: 0 15px;
}

dl dd> :first-child {
    margin-top: 0;
}

dl dd> :last-child {
    margin-bottom: 0;
}

blockquote {
    border-left: 4px solid #ECF0F3;
    /*padding: 0 15px;*/
    padding: 15px;
    background-color: #F7F9FA;
    color: #2B3F52;
}

blockquote> :first-child {
    margin-top: 0;
}

blockquote> :last-child {
    margin-bottom: 0;
}

table {
    padding: 0;
    width: 100%;
    /*表格宽度*/
    /*border: 1px solid #dedede; 表格外边框设置*/
    margin: 15px auto;
    /*外边距*/
    border-collapse: collapse;
    /*使用单一线条的边框*/
    empty-cells: show;
    /*单元格无内容依旧绘制边框*/
    overflow-x: auto;
    display: block;
}

table tr {
    border-top: 1px solid #cccccc;
    background-color: white;
    margin: 0;
    padding: 0;
}

table tr:nth-child(2n) {
    background-color: #f8f8f8;
}

table tr th {
    font-weight: bold;
    border: 1px solid #cccccc;
    margin: 0;
    padding: 6px 13px;
}

table tr td {
    border: 1px solid #cccccc;
    margin: 0;
    padding: 6px 13px;
}

table tr th :first-child,
table tr td :first-child {
    margin-top: 0;
}

table tr th :last-child,
table tr td :last-child {
    margin-bottom: 0;
}

table tbody tr:nth-child(2n) {
    background: rgba(158, 188, 226, 0.12);
}

table th {
    white-space: nowrap;
    /*表头内容强制在一行显示*/
}

table td {
    white-space: nowrap;
}


/* table tr:hover {
background: #efefef;
} */

img {
    max-width: 100%;
}

span.frame {
    display: block;
    overflow: hidden;
}

span.frame>span {
    border: 1px solid #dddddd;
    display: block;
    float: left;
    overflow: hidden;
    margin: 13px 0 0;
    padding: 7px;
    width: auto;
}

span.frame span img {
    display: block;
    float: left;
}

span.frame span span {
    clear: both;
    color: #333333;
    display: block;
    padding: 5px 0 0;
}

span.align-center {
    display: block;
    overflow: hidden;
    clear: both;
}

span.align-center>span {
    display: block;
    overflow: hidden;
    margin: 13px auto 0;
    text-align: center;
}

span.align-center span img {
    margin: 0 auto;
    text-align: center;
}

span.align-right {
    display: block;
    overflow: hidden;
    clear: both;
}

span.align-right>span {
    display: block;
    overflow: hidden;
    margin: 13px 0 0;
    text-align: right;
}

span.align-right span img {
    margin: 0;
    text-align: right;
}

span.float-left {
    display: block;
    margin-right: 13px;
    overflow: hidden;
    float: left;
}

span.float-left span {
    margin: 13px 0 0;
}

span.float-right {
    display: block;
    margin-left: 13px;
    overflow: hidden;
    float: right;
}

span.float-right>span {
    display: block;
    overflow: hidden;
    margin: 13px auto 0;
    text-align: right;
}

code,
tt {
    margin: 0 2px;
    padding: 0 5px;
    border: 1px solid #eaeaea;
    background-color: #f8f8f8;
    border-radius: 3px;
    white-space: pre-wrap;
    word-break: break-all;
}

pre code {
    margin: 0;
    padding: 0;
    /*滚动*/
    white-space: pre;
    border: none;
    background: transparent;
    display: block;
}

.highlight pre {
    background-color: #f8f8f8;
    /* border: 1px solid #cccccc; */
    font-size: 13px;
    line-height: 19px;
    overflow: auto;
    padding: 2px 5px;
    border-radius: 3px;
}

pre {
    background-color: #f8f8f8;
    /* border: 1px solid #cccccc; */
    font-size: 13px;
    line-height: 19px;
    overflow: auto;
    padding: 2px 5px;
    border-radius: 3px;
    border-left: 5px solid #6CE26C;
}

pre code,
pre tt {
    background-color: transparent;
    border: none;
}

sup {
    font-size: 0.83em;
    vertical-align: super;
    line-height: 0;
}

* {
    -webkit-print-color-adjust: exact;
}

@media screen and (min-width: 914px) {
    body {
        width: 960px;
        margin: 0 auto;
    }
}

@media print {
    table,
    pre {
        page-break-inside: avoid;
    }
    pre {
        word-wrap: break-word;
    }
}


/* https://pygments.org/docs/quickstart/
https://github.com/pygments/pygments
'pymdownx.highlight',

pygmentize -S default -f html > style.css */

pre {
    line-height: 125%;
}

td.linenos .normal {
    color: inherit;
    background-color: transparent;
    padding-left: 5px;
    padding-right: 5px;
}

span.linenos {
    color: inherit;
    background-color: transparent;
    padding-left: 5px;
    padding-right: 5px;
}

td.linenos .special {
    color: #000000;
    background-color: #ffffc0;
    padding-left: 5px;
    padding-right: 5px;
}

span.linenos.special {
    color: #000000;
    background-color: #ffffc0;
    padding-left: 5px;
    padding-right: 5px;
}

.hll {
    background-color: #ffffcc
}

.c {
    color: #408080;
    font-style: italic
}


/* Comment */

.err {
    border: 1px solid #FF0000
}


/* Error */

.k {
    color: #008000;
    font-weight: bold
}


/* Keyword */

.o {
    color: #666666
}


/* Operator */

.ch {
    color: #408080;
    font-style: italic
}


/* Comment.Hashbang */

.cm {
    color: #408080;
    font-style: italic
}


/* Comment.Multiline */

.cp {
    color: #BC7A00
}


/* Comment.Preproc */

.cpf {
    color: #408080;
    font-style: italic
}


/* Comment.PreprocFile */

.c1 {
    color: #408080;
    font-style: italic
}


/* Comment.Single */

.cs {
    color: #408080;
    font-style: italic
}


/* Comment.Special */

.gd {
    color: #A00000
}


/* Generic.Deleted */

.ge {
    font-style: italic
}


/* Generic.Emph */

.gr {
    color: #FF0000
}


/* Generic.Error */

.gh {
    color: #000080;
    font-weight: bold
}


/* Generic.Heading */

.gi {
    color: #00A000
}


/* Generic.Inserted */

.go {
    color: #888888
}


/* Generic.Output */

.gp {
    color: #000080;
    font-weight: bold
}


/* Generic.Prompt */

.gs {
    font-weight: bold
}


/* Generic.Strong */

.gu {
    color: #800080;
    font-weight: bold
}


/* Generic.Subheading */

.gt {
    color: #0044DD
}


/* Generic.Traceback */

.kc {
    color: #008000;
    font-weight: bold
}


/* Keyword.Constant */

.kd {
    color: #008000;
    font-weight: bold
}


/* Keyword.Declaration */

.kn {
    color: #008000;
    font-weight: bold
}


/* Keyword.Namespace */

.kp {
    color: #008000
}


/* Keyword.Pseudo */

.kr {
    color: #008000;
    font-weight: bold
}


/* Keyword.Reserved */

.kt {
    color: #B00040
}


/* Keyword.Type */

.m {
    color: #666666
}


/* Literal.Number */

.s {
    color: #BA2121
}


/* Literal.String */

.na {
    color: #7D9029
}


/* Name.Attribute */

.nb {
    color: #008000
}


/* Name.Builtin */

.nc {
    color: #0000FF;
    font-weight: bold
}


/* Name.Class */

.no {
    color: #880000
}


/* Name.Constant */

.nd {
    color: #AA22FF
}


/* Name.Decorator */

.ni {
    color: #999999;
    font-weight: bold
}


/* Name.Entity */

.ne {
    color: #D2413A;
    font-weight: bold
}


/* Name.Exception */

.nf {
    color: #0000FF
}


/* Name.Function */

.nl {
    color: #A0A000
}


/* Name.Label */

.nn {
    color: #0000FF;
    font-weight: bold
}


/* Name.Namespace */

.nt {
    color: #008000;
    font-weight: bold
}


/* Name.Tag */

.nv {
    color: #19177C
}


/* Name.Variable */

.ow {
    color: #AA22FF;
    font-weight: bold
}


/* Operator.Word */

.w {
    color: #bbbbbb
}


/* Text.Whitespace */

.mb {
    color: #666666
}


/* Literal.Number.Bin */

.mf {
    color: #666666
}


/* Literal.Number.Float */

.mh {
    color: #666666
}


/* Literal.Number.Hex */

.mi {
    color: #666666
}


/* Literal.Number.Integer */

.mo {
    color: #666666
}


/* Literal.Number.Oct */

.sa {
    color: #BA2121
}


/* Literal.String.Affix */

.sb {
    color: #BA2121
}


/* Literal.String.Backtick */

.sc {
    color: #BA2121
}


/* Literal.String.Char */

.dl {
    color: #BA2121
}


/* Literal.String.Delimiter */

.sd {
    color: #BA2121;
    font-style: italic
}


/* Literal.String.Doc */

.s2 {
    color: #BA2121
}


/* Literal.String.Double */

.se {
    color: #BB6622;
    font-weight: bold
}


/* Literal.String.Escape */

.sh {
    color: #BA2121
}


/* Literal.String.Heredoc */

.si {
    color: #BB6688;
    font-weight: bold
}


/* Literal.String.Interpol */

.sx {
    color: #008000
}


/* Literal.String.Other */

.sr {
    color: #BB6688
}


/* Literal.String.Regex */

.s1 {
    color: #BA2121
}


/* Literal.String.Single */

.ss {
    color: #19177C
}


/* Literal.String.Symbol */

.bp {
    color: #008000
}


/* Name.Builtin.Pseudo */

.fm {
    color: #0000FF
}


/* Name.Function.Magic */

.vc {
    color: #19177C
}


/* Name.Variable.Class */

.vg {
    color: #19177C
}


/* Name.Variable.Global */

.vi {
    color: #19177C
}


/* Name.Variable.Instance */

.vm {
    color: #19177C
}


/* Name.Variable.Magic */

.il {
    color: #666666
}


/* Literal.Number.Integer.Long */