@charset "UTF-8";

/* common definition */
html {
  overflow-x: hidden;
}

body {
  font-family: Verdana, Arial, SimSun, "Microsoft YaHei", sans-serif;
  line-height: 1.5;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }

h1, h2, h3, h4, h5 {
  margin-top: .5em;
  margin-bottom: .5em;
}

h1 a, h2 a, h3 a, h4 a, h5 a {
  font-weight: inherit;
}

h1, h2, h3, h4 {
  font-family: "Microsoft YaHei", serif;
  font-weight: normal;
}

p {
  margin-top: .5em;
  margin-bottom: .5em;
  color: #333;
}

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

table {
  width: 100%;
}

table, th, td {
  border: none;
}

pre, code {
  font-family: Consolas, "Courier New", Courier, monospace;
}

pre {
  padding: .25em .75em;
  margin: .25em 0;
  white-space: pre-wrap;
  border: 1px dotted #999;
}

code {
  padding: 1px .25em;
  color: #c00;
  background-color: #f3f6f6;
  border-radius: .25em;
}

ul, ol {
  padding: 0;
  margin: .25em 0 0 2em;
}

img {
  max-width: 100%;
  margin-bottom: -5px;
}

blockquote {
  padding-left: .5em;
  margin: .25em 0;
  border: 1px dotted #ccc;
  border-left: 6px solid #ccc;
}

hr {
  height: 0;
  margin: 6px 0;
  border: 0;
  border-top: 1px solid #ccc;
}

/* definition of the main parts */
html, body {
  height: 100%;
}

main {
  position: relative;
  width: 100%;
  min-height: 100%;
  text-align: left;
  border: 0;
}

main h1 {
  text-align: center;
  border-bottom: 2px solid #999;
}

main h2 {
  border-bottom: 1px solid #ccc;
}

main h2::after {
  position: absolute;
  right: 1rem;
  font-size: 1rem;
  content: "#折叠#";
}

main h2.collapse::after {
  content: "#展开#";
}

main a {
  border-bottom: 1px solid #ccc;
}

main table {
  display: block;
  overflow-x: auto;
  margin: .25em 0 0;
  empty-cells: show;
  border-collapse: collapse;
}

main table thead {
  color: #fff;
  text-align: center;
  background-color: #666;
  border-style: solid;
  border-color: #ccc;
  border-width: 0 2px;
}

main table th, main table td {
  padding: .15em .5em;
  border: 1px solid #ccc;
}

main table td:first-child a {
  color: #f33;
}

#md {
  padding: .5em 1em 2em;
}

#md pre {
  padding: 0;
}

#md pre > code {
  display: block;
  padding: .5em;
  color: inherit;
  background-color: #f3f3f6;
}

@media (min-width: 993px) {
  main {
    max-width: 980px;
    margin: auto;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 2px 10px 0 rgba(0, 0, 0, 0.12) !important;
  }
}

/* definition of the sidemenu */
#sidemenu {
  position: fixed;
  left: -230px;
  z-index: 99;
  width: 230px;
  height: 100%;
  background-color: #eee;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 2px 10px 0 rgba(0, 0, 0, 0.12) !important;
}

#sidemenu h2, #sidemenu h3 {
  font-family: "Microsoft YaHei", sans-serif;
}

#sidemenu h2 {
  margin: 2px 6px;
  font-size: 1.25rem;
  text-align: center;
  cursor: pointer;
  background-color: #ccc;
}

#sidemenu h2::before {
  position: absolute;
  left: 12px;
  font-weight: bold;
  color: #fff;
  content: "-";
}

#sidemenu h2.collapse::before {
  content: "+";
}

#sidemenu h3 {
  padding-left: .5em;
  margin: 2px 0;
  font-size: 1.125rem;
  color: #000;
}

#sidemenu a {
  display: block;
  padding: 0 1em;
  font-size: 1rem;
  color: #555;
  text-decoration: none;
}

#sidemenu a:hover {
  background-color: #ccc;
}

#togglemenu {
  position: absolute;
  top: 1.5em;
  left: 100%;
  padding: .25em;
  line-height: 1.25em;
  color: #999;
  cursor: pointer;
  border: 1px solid #ccc;
  border-radius: 0 .25em .25em 0;
}

#togglemenu:hover {
  color: #666;
  background-color: #eee;
}
#togglemenu span:last-child {
  display: none;
}

#sidemenu.show {
  left: 0;
}
#sidemenu.show #togglemenu span {
  display: none;
}
#sidemenu.show #togglemenu span:last-child {
  display: inline;
}

/* definition of the tools icon and relevant subject */
#tools {
  position: fixed;
  top: 8px;
  right: 50px;
  z-index: 999;
  opacity: .9;
}

#tools > div {
  display: inline-block;
  padding: 0 .25em;
  margin: .25em;
  cursor: pointer;
  border: 1px solid #666;
  border-radius: .25em;
}

#outline > div {
  position: absolute;
  left: -115px;
  display: none;
  width: 300px;
  overflow-x: hidden;
  white-space: nowrap;
  background-color: #fff;
  border: 1px solid #666;
  border-radius: .25em;
}

#outline:hover > div {
  display: block;
}

#outline .h1 { text-align: center; }
#outline .h2 { padding-left: 1em;  }
#outline .h3 { padding-left: 2em;  }
#outline .h4 { padding-left: 3em;  }

#outline a {
  display: block;
}

#outline a:hover {
  color: #fff;
  background-color: #999;
}

.mark, .mark * {
  font-style: normal;
  text-decoration: inherit;
  background-color: #ccf;
}

p > .mark {
  padding: .2em 0;
}

/* special definition for widescreen */
@media (min-width: 1210px) {
  body {
    position: relative;
    width: 1210px;
    margin: auto;
  }
  main { left: 115px; }
  #sidemenu { left: auto; }
  #togglemenu { display: none; }
  #tools { right: calc(50% - 555px); }
}