:root {
  color-scheme: light;
  --background: #ffffff;
  --text: #202124;
  --muted: #62676d;
  --border: #dfe2e5;
  --link: #0969da;
  --draft-background: #fff8c5;
  --draft-border: #d4a72c;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

.article-shell {
  width: 100%;
  padding: 56px 24px 88px;
}

.article-content {
  width: min(100%, 940px);
  margin: 0 auto;
}

h1,
h2,
h3 {
  color: #111418;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 12px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 42px;
  font-weight: 700;
}

h2 {
  margin: 48px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  font-size: 27px;
}

h3 {
  margin: 34px 0 10px;
  font-size: 21px;
}

p,
ul,
ol {
  margin: 0 0 18px;
}

li + li {
  margin-top: 8px;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

blockquote {
  margin: 0 0 32px;
  padding: 12px 16px;
  border-left: 4px solid var(--draft-border);
  background: var(--draft-background);
  color: #453800;
}

blockquote p {
  margin: 0;
}

.equation {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 4px 10px;
  margin: 30px 0 18px;
  padding: 18px 20px;
  overflow-x: auto;
  border: 1px solid var(--border);
  background: #f6f8fa;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.4em;
  line-height: 1.45;
}

.equation-term {
  white-space: nowrap;
}

.equation-explanation {
  margin: 46px 0 18px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 22px auto 34px;
}

code {
  padding: 2px 5px;
  border-radius: 4px;
  background: #f4f5f6;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
}

pre {
  margin: 0 0 24px;
  padding: 16px 18px;
  overflow-x: auto;
  border: 1px solid var(--border);
  background: #f6f8fa;
  line-height: 1.55;
}

pre code {
  padding: 0;
  background: transparent;
  font-size: 0.88em;
}

table {
  display: block;
  width: 100%;
  margin: 8px 0 28px;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.45;
  white-space: nowrap;
}

th,
td {
  padding: 10px 12px;
  border: 1px solid var(--border);
  text-align: left;
}

th {
  background: #f4f6f8;
  font-weight: 650;
}

tbody tr:nth-child(even) {
  background: #fafbfc;
}

em {
  color: var(--muted);
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .article-shell {
    padding: 32px 18px 64px;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    margin-top: 40px;
    font-size: 24px;
  }
}