* {
  box-sizing: border-box;
}
body {
  margin: 0;
  padding-left: 200px;
}
::selection {
  background: var(--select);
}
a {
  color: var(--theme);
  text-decoration: none;
}
.back {
  display: block;
  margin-top: 16px;
  color: var(--theme);
  padding: 16px;
}
aside {
  position: fixed;
  left: 0;
  top: 0;
  width: 200px;
  height: 100vh;
  overflow: hidden scroll;
  scroll-behavior: smooth;
  overscroll-behavior: auto;
  z-index: 1;
}
aside ul,
aside li,
aside a {
  display: block;
  max-width: 100%;
  color: #000;
}
aside ul {
  padding: 0;
}
aside li ul {
  padding-left: 16px;
}
aside a:not(.back) {
  padding: 8px 0 8px 16px;
  border-left: 2px solid rgba(0,0,0,0);
}
aside .current:not(.back) {
  border-left: 2px solid var(--theme);
  background: var(--fade);
}
.aside-close {
  all: unset;
  box-sizing: border-box;
  width: 100%;
  font-size: 20px;
  padding: 8px 10px 0;
  display: none;
  position: sticky;
  top: 0;
}
.aside-open {
  all: unset;
  box-sizing: border-box;
  font-size: 20px;
  padding: 8px 14px;
  display: none;
  position: sticky;
  top: 0;
}
article {
  width: 100%;
  padding: 16px;
}
article ul,
article ol {
  padding-left: 20px;
}
h1 {
  font-size: 26px;
  margin: 6px 0;
}
h2 {
  font-size: 24px;
  margin: 6px 0;
}
h3 {
  font-size: 20px;
  margin: 6px 0;
}
h4 {
  font-size: 16px;
  margin: 6px 0;
}
h5 {
  font-size: 18px;
  margin: 6px 0;
}
h6 {
  font-size: 16px;
  margin: 6px 0;
}
table {
  border-collapse: collapse;
  border: 1px solid #808080;
}
td,
th {
  border: 1px solid #808080;
  padding: 6px 10px;
}
img {
  vertical-align: middle;
  max-width: 100%;
}
.katex-display {
  overflow-x: auto;
}
.katex-display>.katex>.katex-html {
  text-align: left;
}
.table-no-border {
  overflow: auto hidden;
}
.table-no-border * {
  border: 0;
  white-space: nowrap;
}
.table-no-border td,
.table-no-border th {
  padding: 0;
}
details {
  border: 1px solid rgba(136,136,136,0.533);
  padding: 4px 10px;
}
details[open] summary {
  border-bottom: 1px solid rgba(136,136,136,0.533);
  padding-bottom: 4px;
}
@media screen and (max-width: 700px) {
  aside {
    width: 100vw;
    background: #fff;
    left: -100vw;
    transition: 0.3s left cubic-bezier(0, 1, 0, 1);
  }
  aside.aside-opened {
    left: 0vw;
  }
  body {
    padding-left: 0;
  }
  .aside-close,
  .aside-open {
    display: block;
  }
}
@media print {
  body {
    padding-left: 0;
  }
  .aside-close,
  .aside-open,
  aside,
  h1 {
    display: none;
  }
  td,
  th {
    padding: 1px 2px;
  }
  p,
  ul,
  ol {
    margin: 4px 0;
  }
  .katex-display {
    overflow: unset;
    font-size: 14px;
  }
}