:root {
  --bg-color: #01093c;
  --fg-color: #ffffff;
  --lightblue: #4693e1;
  --fg-accent: 7 #b7b7b7;

  --max-width: 768px;
  --gutter: 18px;
}

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

p,
ul,
ol {
  line-height: 1.6;
}

ol ol {
  list-style-type: lower-alpha;
}

ol li:target {
  border-color: #805a8b;
  border-bottom-width: 4px;
  border-top-width: 4px;
  border-bottom-style: dashed;
  border-top-style: dashed;
}

blockquote {
  margin-left: 2em;
  padding-left: 1em;
  border-left: 5px solid #666;
}

a {
  text-underline-offset: 0.3em;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--lightblue);
  color: currentColor;
  overflow-wrap: break-word;
}

a:hover,
a:active {
  color: var(--lightblue);
}

sup a {
  text-underline-offset: 0.25em;
  margin-left: 0.2ch;
}

h1 a,
h2 a,
.series-list li a,
.content-list li a {
  text-decoration: none;
}

h1 a:hover,
h2 a:hover,
.series-list li a:hover,
.content-list li a:hover {
  text-decoration: none;
}

body {
  background-color: var(--bg-color);
  color: var(--fg-color);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    'Open Sans',
    'Helvetica Neue',
    sans-serif;

  margin: 0;
  margin-top: var(--gutter);
  margin-bottom: 5rem;
  font-size: 18px;

  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-items: center;
}

body > *:not(main, header) {
  padding-left: 18px;
  padding-right: 18px;
}

header {
  width: 95%;
  line-height: 1;
  margin: 0 1em calc(var(--gutter * 3)) 1em;
}

header a {
  font-size: 0.9rem;
  text-decoration: none;
}

header a + a {
  margin-left: 0.5rem;
}

header div:first-child {
  margin-bottom: 0.5em;
}

header div:first-child a {
  font-size: 1.4rem;
}

main {
  width: 100%;
  max-width: var(--max-width);
}

main > *:not(.image-container, video, .summary) {
  margin-left: var(--gutter);
  margin-right: var(--gutter);
}

main time {
  color: var(--fg-accent);
}

main h1 {
  font-size: 1.6rem;
  margin: 0;
}

main h2 {
  font-size: 1.3rem;
  margin: 0;
  margin-top: 1.2rem;
  margin-bottom: 0.4rem;
}

main h2 + p,
main h2 + ul,
main h2 + ol {
  margin-top: 0;
}

main p {
  margin: 1rem 0;
}

main .image-container + .image-container {
  margin-top: 1rem;
}

main li .image {
  margin-top: 1rem;
}
main sup {
  line-height: 0;
}

img,
video {
  max-width: 100%;
  height: auto;
  background-color: var(--fg-color);
}

.heading {
  margin-bottom: 0.25rem;
}

.heading h1 {
  margin-right: 1rem;
}

.heading h1 a {
  font-size: 3em;
}

.heading h1 a:hover {
  text-decoration: none !important;
}

.heading time {
  font-size: 0.9em;
}

.heading ~ .heading {
  position: relative;
  margin-top: 63px;
}

.summary > *:not(.image-container) {
  margin-left: var(--gutter);
  margin-right: var(--gutter);
}

.summary h2 {
  margin-top: 0.8rem;
  margin-bottom: 0;
}

.summary .tags {
  margin: 0;
}

.summary time {
  margin-right: 1rem;
}

.summary p {
  margin: 0.5rem 0;
}

.summary ~ .summary {
  margin-top: calc(var(--gutter) * 3.5);
}

.draft-tag {
  font-weight: normal;
  display: inline-block;
  margin-right: 0.75em;
  font-size: 0.8em;
  border: 1px solid #696969;
  border-radius: 4px;
}

.draft-tag span {
  padding: 0.25em;
}

.row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

.content-list {
  padding-left: 0;
}

.content-list li {
  display: flex;
  flex-direction: row;
  margin-bottom: 1rem;
}

.content-list li time {
  width: 7ch;
  flex-shrink: 0;
}

.image-container {
  text-align: center;
}

.image-container img {
  border: 8px solid var(--fg-color);
}

.image-container.left {
  float: left;
  margin-right: 1em;
}

.image-container.right {
  float: right;
  margin-left: 1em;
}

.image-container a.image {
  display: inline-block;
  font-size: 0;
}

.image-container span {
  font-size: 0.9rem;
  margin-top: 0.3rem;
  margin-left: var(--gutter);
  text-align: right;
  display: block;
}

.image-container + .footnotes {
  margin-top: var(--gutter);
}

.tags {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  margin-top: 1rem;
}

.tags ul {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  row-gap: 0.6rem;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.tags ul li {
  margin-right: 0.5rem;
  line-height: 1;
}

.tags a {
  text-decoration: none;
  color: var(--lightblue);
  padding: 0.3rem 0.5rem;
  display: block;
  border-radius: 4px;
  font-size: 0.9rem;
  border-width: 1px;
  border-style: solid;
  border-color: var(--fg-accent);
}

.tags a:hover,
.tags a:active {
  background-color: var(--lightblue);
  color: var(--fg-color);
  border-color: var(--fg-color);
}

.next-prev {
  time {
    color: currentcolor;
    padding: 0;
  }
}