:root {
  color-scheme: light;
  --bg: #fff;
  --ink: #111;
  --muted: #555;
  --line: #ccc;
  --soft: #f5f5f5;
}

html {
  height: 100%;
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Noto Sans Mono CJK SC", "PingFang SC", monospace;
  font-size: 15px;
  line-height: 1.65;
  overflow-wrap: break-word;
}

main {
  max-width: 78ch;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.site-header {
  position: relative;
  min-height: 5.8rem;
  margin-bottom: 2.5rem;
}

.site-header a {
  text-decoration: none;
}

.site-header a:hover {
  text-decoration: underline;
}

.site-title {
  padding-top: 1.1rem;
}

.thinker-mark {
  position: absolute;
  top: 0;
  right: 0;
  width: 4.25rem;
  height: auto;
  margin: 0;
  opacity: 0.7;
  filter: grayscale(1) contrast(1.14);
  mix-blend-mode: multiply;
}

h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
}

h2 {
  margin: 2rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
}

h3,
h4,
h5,
h6 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1rem;
}

p,
dl,
ul,
ol,
blockquote,
pre,
table {
  margin: 0.5rem 0 1rem 2rem;
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

a:hover {
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 2ch;
  margin-bottom: 2.5rem;
}

time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

dl {
  display: grid;
  grid-template-columns: 11ch minmax(0, 1fr);
  column-gap: 2ch;
}

dt,
dd {
  margin: 0 0 0.45rem;
}

dd {
  min-width: 0;
}

article > header {
  margin: 0 0 1rem 2rem;
  color: var(--muted);
}

article h1 {
  margin: 0.5rem 0 1rem;
  text-align: left;
}

article h2 {
  margin-top: 2.25rem;
}

li {
  margin: 0.25rem 0;
}

blockquote {
  padding-left: 2ch;
  border-left: 1px solid var(--line);
  color: var(--muted);
}

blockquote p {
  margin: 0;
}

hr {
  margin: 2rem 0;
  border: 0;
  text-align: center;
}

hr::before {
  content: "-----";
}

code {
  padding: 0.12em 0.3em;
  background: var(--soft);
  font-family: inherit;
}

pre {
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--soft);
}

pre code {
  padding: 0;
  background: transparent;
}

img {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  margin: 1rem auto;
}

table {
  display: block;
  width: fit-content;
  max-width: 100%;
  overflow: auto;
  border-spacing: 0;
  border-collapse: collapse;
}

th,
td {
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--line);
}

@media (max-width: 620px) {
  main {
    padding: 3rem 1.25rem;
  }

  .site-header {
    min-height: 0;
  }

  .site-title {
    padding-top: 0;
  }

  .thinker-mark {
    display: none;
  }

  p,
  dl,
  ul,
  ol,
  blockquote,
  pre,
  table,
  article > header {
    margin-left: 0;
  }

  dl {
    display: block;
  }

  dt {
    margin-bottom: 0;
  }

  dd {
    margin: 0 0 0.65rem 2ch;
  }
}

@media print {
  body {
    font-size: 11pt;
  }

  main {
    max-width: none;
    padding: 0;
  }

  a {
    text-decoration: none;
  }
}