:root {
  color-scheme: light;
  --ink: #171717;
  --muted: #5d5d5d;
  --rule: #c8c8c8;
  --paper: #fbfaf7;
  --link: #174b73;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.6;
}

body {
  margin: 0;
}

.page-header,
main {
  width: min(100% - 2rem, 980px);
  margin-inline: auto;
}

.page-header {
  padding-block: clamp(2rem, 7vw, 5rem) 1.5rem;
  border-bottom: 2px solid var(--ink);
}

.page-header h1 {
  max-width: 24ch;
  margin: 0.8rem 0 0.65rem;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.back-link,
.source-line {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.82rem;
}

.source-line {
  margin: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

main {
  padding-block: 1.5rem 5rem;
}

.markdown-body {
  max-width: 78ch;
}

.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  line-height: 1.2;
  scroll-margin-top: 1rem;
}

.markdown-body h2 {
  margin-top: 3rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule);
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.markdown-body h3 {
  margin-top: 2rem;
  font-size: 1.25rem;
}

a {
  color: var(--link);
  text-underline-offset: 0.16em;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

code {
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--rule);
  background: #f1f0ec;
}

table {
  display: block;
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.86rem;
}

th,
td {
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

th {
  background: #eceae4;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

blockquote {
  margin-inline: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}

@media (min-width: 720px) {
  .page-header,
  main {
    width: min(100% - 5rem, 980px);
  }
}