:root {
  --approachability-paper: #fff;
  --approachability-ink: #171411;
  --approachability-muted: #6b635b;
  --approachability-rule: #d7d0c6;
  --approachability-soft: #f2efe8;
  --approachability-block: #eeeeee;
  --approachability-accent: #325d8a;
  --approachability-accent-dark: #173f64;
  --approachability-brown: #8a4c20;
  --approachability-serif: Georgia, "Times New Roman", Times, serif;
  --approachability-display: "Avenir Next", "Trebuchet MS", "Helvetica Neue", Arial, sans-serif;
  --approachability-site-width: 1320px;
  --approachability-site-left: max(24px, calc((100vw - var(--approachability-site-width)) / 2 + 24px));
  --approachability-page-width: 780px;
  --approachability-shell-width: 828px;
  --approachability-rail-width: 180px;
  --approachability-rail-gutter: 2cm;
  --approachability-content-gutter: 24px;
  --approachability-footer-clearance: 132px;
}

html {
  background: var(--approachability-paper);
}

body.approachability-note {
  background: var(--approachability-paper);
  color: var(--approachability-ink);
  font-family: var(--approachability-serif);
  font-size: 18px;
  line-height: 1.58;
}

body.approachability-note .navbar {
  background: var(--approachability-paper);
  border-bottom: 1px solid var(--approachability-rule);
  font-family: "Asap", sans-serif;
  font-size: 14.2px;
  line-height: 1.5;
}

body.approachability-note ul.navbar-nav li a {
  color: #999 !important;
  font-family: "Asap", sans-serif;
  font-size: 85%;
  letter-spacing: 0;
}

body.approachability-note ul.navbar-nav li.active a {
  color: #000 !important;
}

body.approachability-note a {
  color: var(--approachability-accent);
  text-decoration: none;
}

body.approachability-note a:hover {
  color: var(--approachability-accent-dark);
  text-decoration: underline;
}

body.approachability-note #main-container {
  padding: 32px 0 64px;
}

body.approachability-note #main-container > .row {
  display: block;
  margin: 0;
}

body.approachability-note #content-container {
  float: none;
  width: 100%;
  max-width: var(--approachability-page-width);
  margin: 0;
  padding: 0;
}

body.approachability-note #content.article {
  box-sizing: border-box;
  color: var(--approachability-ink);
  font-family: var(--approachability-serif);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.58;
  padding-left: var(--approachability-content-gutter);
  text-align: left;
}

body.approachability-note #content.article .main-title,
body.approachability-note #content.article h2,
body.approachability-note #content.article h3,
body.approachability-note #content.article h4,
body.approachability-note .toc-container h4,
body.approachability-note box .box-head,
body.approachability-note .cm-sans {
  font-family: var(--approachability-display);
  letter-spacing: 0;
}

body.approachability-note #content.article .main-title {
  margin: 0 0 1rem;
  padding: 0;
  color: var(--approachability-ink);
  font-size: 2.45rem;
  font-weight: 600;
  line-height: 1.08;
}

body.approachability-note #content.article h2,
body.approachability-note #content.article h3 {
  position: relative;
  line-height: 1.18;
}

body.approachability-note #content.article h2::before,
body.approachability-note #content.article h3::before {
  content: "";
  position: absolute;
  top: 0.18em;
  bottom: 0.16em;
  left: -1.05rem;
  background: #bdb7ad;
}

body.approachability-note #content.article h2::before {
  width: 4px;
}

body.approachability-note #content.article h3::before {
  width: 3px;
  background: #c8c2b9;
}

body.approachability-note #content.article h2 {
  margin: 2.2rem 0 0.8rem;
  padding-top: 0.15rem;
  color: var(--approachability-ink);
  font-size: 1.75rem;
  font-weight: 600;
}

body.approachability-note #content.article h3 {
  margin: 2rem 0 0.65rem;
  color: var(--approachability-ink);
  font-size: 1.38rem;
  font-weight: 600;
}

body.approachability-note #content.article h4 {
  margin: 1.55rem 0 0.45rem;
  color: var(--approachability-ink);
  font-size: 1.12rem;
  font-weight: 600;
}

body.approachability-note .section-number {
  color: var(--approachability-muted);
  font-weight: 400;
}

body.approachability-note par,
body.approachability-note #content.article p {
  margin: 0.72rem 0;
}

body.approachability-note #content.article ul,
body.approachability-note #content.article ol {
  padding: 0.2rem 0 0.2rem 1.35rem;
}

body.approachability-note #content.article li {
  margin: 0.25rem 0;
}

body.approachability-note #content.article .toc-container {
  display: block;
  margin: 0 0 2rem;
  padding: 0.85rem 1rem;
  background: #fffdf9;
  border: 1px solid var(--approachability-rule);
  color: var(--approachability-ink);
  font-family: var(--approachability-serif);
  font-size: 0.95rem;
  line-height: 1.45;
}

body.approachability-note .toc-container h4 {
  margin: 0 0 0.55rem;
  color: var(--approachability-muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

body.approachability-note .toc-container ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

body.approachability-note .toc-container li {
  margin: 0.12rem 0;
  padding: 0 !important;
}

body.approachability-note .toc-container li li {
  margin-left: 1.1rem;
  font-size: 0.94em;
}

body.approachability-note .toc-container a {
  color: var(--approachability-muted);
}

body.approachability-note .toc-container a:hover {
  color: var(--approachability-ink);
  text-decoration: none;
}

body.approachability-note .side-column {
  position: fixed;
  top: 82px;
  bottom: var(--approachability-footer-clearance);
  left: calc(var(--approachability-site-left) + var(--approachability-page-width) + var(--approachability-rail-gutter));
  width: var(--approachability-rail-width);
  margin: 0;
  padding: 0.2rem 0 1rem;
  overflow-y: auto;
  border-left: 1px solid var(--approachability-rule);
  font-size: 0.84rem;
  line-height: 1.35;
}

body.approachability-note .side-column .toc-container {
  margin: 0;
  padding: 0;
  font-family: var(--approachability-serif);
}

body.approachability-note .side-column .toc-container h4 {
  padding: 0 0.3rem 0 0.75rem;
}

body.approachability-note .side-column .toc-container a {
  display: block;
  padding: 0.32rem 0.3rem 0.32rem 0.75rem;
}

@media (min-width: 1181px) {
  body.approachability-note #content.article > .toc-container {
    display: none;
  }
}

body.approachability-note box {
  margin: 1.1rem 0;
  padding: 0.42rem 0.85rem;
  background: var(--approachability-block);
  border: 1px solid #d8d8d8;
  border-radius: 3px;
}

body.approachability-note box .box-head {
  display: inline;
  margin: 0 0.25em 0 0;
  padding: 0;
  font-weight: 600;
}

body.approachability-note box .box-head b,
body.approachability-note box .box-head strong {
  font-weight: 600;
}

body.approachability-note box .box-body {
  display: contents;
  padding: 0;
}

body.approachability-note box .box-body > par:first-child {
  display: inline;
  margin: 0;
}

body.approachability-note eqn {
  margin: 1rem 0;
  overflow-x: auto;
}

body.approachability-note eqn table {
  width: 100%;
}

body.approachability-note eqn table td.eqn-body {
  padding: 0;
  text-align: center;
}

body.approachability-note eqn table td.eqn-num {
  color: var(--approachability-muted);
  font-size: 0.95em;
  font-variant-numeric: tabular-nums;
}

body.approachability-note a.ref {
  background: #faf4ee;
  color: var(--approachability-brown);
  padding: 0 0.2em;
}

body.approachability-note figure,
body.approachability-note #content.article img {
  max-width: 100%;
}

body.approachability-note footer {
  font-family: "Asap", sans-serif;
  font-size: 14.2px;
}

body.approachability-note footer .container {
  color: #444;
  font-family: "Atlas", sans-serif;
  font-size: 14.2px;
  line-height: 1.8;
}

@media (max-width: 1180px) {
  body.approachability-note .side-column {
    display: none;
  }
}

@media (max-width: 700px) {
  html,
  body.approachability-note {
    overflow-x: hidden;
  }

  body.approachability-note {
    --approachability-content-gutter: 12px;
    font-size: 17px;
  }

  body.approachability-note .katex .katex-mathml {
    display: none !important;
  }

  body.approachability-note #main-container {
    padding: 24px 18px 52px;
  }

  body.approachability-note #content.article .main-title {
    font-size: 2rem;
  }

  body.approachability-note #content.article h2::before,
  body.approachability-note #content.article h3::before {
    left: -0.7rem;
  }
}