*,
*::before,
*::after {
  box-sizing: border-box;
}

body,
html {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

:root {
  --c--bg-primary: #fff;
  --c--bg-secondary: #eceff4;
  --c--tx-primary: #2e3440;
  --c--tx-secondary: #3b4252;
  --c--tx-tertiary: #434c5e;
  --c--bd-primary: #d8dee9;
  --c--ac-primary: #2a587f;
}

body {
  background-color: var(--c--bg-primary);
  color: var(--c--tx-secondary);
  font-family: Roboto Slab, serif;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--c--tx-primary);
}

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

a {
  color: var(--c--ac-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul {
  padding: 0 0 0 1.2em;
  margin: 0 0 1em;
}

ul li {
  margin: 0.8em 0;
}

ul li::marker {
  color: var(--c--bd-primary);
}

/** Components */
.visually-hidden {
  border: 0;
  padding: 0;
  margin: -1px;
  position: absolute;
  width: 1px;
  height: 1px;
  clip: rect(1px, 1px, 1px, 1px);
  overflow: hidden;
  top: 0;
}

.page-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 1em 0.8em;
}

.page-header > h1 {
  text-shadow: 3px 2px 12px rgb(0 0 0 / 20%);
}

@media screen and (min-width: 800px) {
  .page-header {
    padding: 2em;
  }
}

.page-header > hr {
  border: none;
  height: 2px;
  background-color: var(--c--bd-primary);
  border-radius: 1px;
  margin: 0 18%;
}

.page-deprecated-banner {
  display: inline-block;
  background-color: rgb(240, 218, 218);
  border: 1px solid rgb(217, 63, 63);
  color: rgb(217, 63, 63);
  border-radius: 8px;
  padding: 8px 12px;
  vertical-align: baseline;
  font-size: 14px;
  text-align: left;
}

.page-deprecated-banner p {
  margin: 0;
}

.main-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 2em 0.8em 4em;
}

@media screen and (min-width: 800px) {
  .main-container {
    padding: 2em 2em 4em;
  }
}

.topics-navigation {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  padding: 2em 0;
  margin-top: -6px;
  margin-left: -6px;
}

.topics-navigation.center {
  justify-content: center;
}

.topics-navigation > a {
  font-size: 0.86em;
  line-height: 1.15;
  display: inline-block;
  background-color: var(--c--ac-primary);
  color: var(--c--bg-primary);
  padding: 6px;
  border-radius: 6px;
  margin-top: 6px;
  margin-left: 6px;
}

.topics-navigation > a:hover {
  text-decoration: none;
  opacity: 0.8;
}

.breadcrumbs-list {
  max-width: 720px;
  margin: 2em auto;
  padding: 0 0.8em;
}

.breadcrumbs-list ol {
  font-size: 0.78em;
  display: block;
  margin: 0;
  padding: 0;
}

.breadcrumbs-list ol li {
  display: inline;
}

.breadcrumbs-list ol li + li::before {
  content: ">";
  margin: 0 4px;
}

@media screen and (min-width: 800px) {
  .breadcrumbs-list {
    padding: 0 2em;
  }
}

.post-index {
  margin: 4em 0;
}

.post-index em {
  font-size: 0.9em;
  color: var(--c--tx-secondary);
  margin: 0 4px;
}

.page-footer {
  padding: 4em 3em;
  background-color: var(--c--bg-secondary);
  text-align: center;
}

.page-footer .links {
  border-top: 1px solid var(--c--bd-primary);
  padding: 1em 0;
  display: flex;
  justify-content: center;
  margin-left: -0.625em;
}

.page-footer .links a {
  display: inline-block;
  padding: 0.5em;
  color: var(--c--tx-tertiary);
  margin-left: 0.625em;
}

.page-footer .links a svg {
  width: 1.2em;
  height: 1.2em;
  display: inline-block;
  fill: currentColor;
  color: inherit;
}

.page-footer em {
  font-size: 0.86em;
}

.article {
  max-width: 100%;
  font-size: 1rem;
}

.article h1 {
  text-shadow: 3px 3px 12px rgba(59, 66, 82, 0.2);
}

.article h2,
.article h3 {
  text-shadow: 1px 1px 6px rgba(59, 66, 82, 0.2);
}

.article h1 {
  line-height: 2em;
  margin-top: 2.1em;
  margin-bottom: 1.44em;
  font-size: 1.8em;
}

.article h2 {
  line-height: 1.75em;
  margin-top: 1.8em;
  margin-bottom: 1.2em;
  font-size: 1.44em;
}

.article h3 {
  line-height: 1em;
  margin-top: 1.44em;
  margin-bottom: 1.15em;
  font-size: 1.21em;
}

.article p {
  margin-top: 1.2em;
  margin-bottom: 1.2em;
}

.article code:not([class]) {
  padding: 0.2em 0.4em;
  font-size: 0.85em;
  background-color: var(--c--bg-secondary);
  border-radius: 4px;
}

.article code,
.article pre {
  font-family: Source Code Pro, monospace !important;
}

.article a {
  word-break: break-all;
}

.article img {
  display: block;
  max-width: 100%;
}

pre {
  color: #d8dee9;
  font-size: 1em;
  text-shadow: none;
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  direction: ltr;
  text-align: left;
  white-space: pre;
  word-spacing: normal;
  word-break: normal;
  line-height: 1.5;
  -moz-tab-size: 4;
  -o-tab-size: 4;
  tab-size: 4;
  -webkit-hyphens: none;
  -moz-hyphens: none;
  -ms-hyphens: none;
  hyphens: none;
  padding: 1em;
  margin: 0.5em 0;
  overflow: auto;
  background: #2e3440;
}