:root {
  --ink: #10171d;
  --paper: #f7f6f2;
  --rule: #c9c6bd;
  --declared: #1f4f7a;
  --computed: #10171d;
  --derived: #6b5a2e;
  --host: #6d6a63;
  --alarm: #8a1f1f;
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 ui-serif, Georgia, "Times New Roman", serif;
}

.masthead {
  border-bottom: 2px solid var(--ink);
  padding: 1.25rem 1.25rem 0.75rem;
  max-width: 52rem;
  margin: 0 auto;
}

.wordmark {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.disclaimer {
  margin: 0.15rem 0 0.75rem;
  color: var(--alarm);
  font-size: 0.9rem;
}

.masthead nav { display: flex; flex-wrap: wrap; gap: 0 1.1rem; }

.masthead nav a {
  color: var(--host);
  text-decoration: none;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid transparent;
}

.masthead nav a:hover { color: var(--ink); }
.masthead nav a.active { color: var(--ink); border-bottom-color: var(--ink); }
.masthead nav a.external { color: var(--host); }

/* The application itself, published at /app/. It is the point of the project, so it is the
   one nav item that does not look like the others. */
.masthead nav a.launch {
  color: var(--paper);
  background: var(--declared);
  border-radius: 2px;
  padding: 0.2rem 0.6rem;
  margin-bottom: 0.5rem;
}

.masthead nav a.launch:hover { color: var(--paper); background: var(--ink); }

.launch-cta { margin: 1.25rem 0 1.75rem; }

.launch-cta a {
  display: inline-block;
  background: var(--declared);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.5rem 1rem;
  border-radius: 2px;
}

.launch-cta a:hover { background: var(--ink); }

.launch-cta .note { color: var(--host); font-size: 0.9rem; margin-left: 0.75rem; }

main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

h1 { font-size: 1.9rem; line-height: 1.2; margin: 1.25rem 0 0.5rem; }

h2 {
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 2.25rem 0 0.6rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--rule);
}

h3 { font-size: 1.02rem; margin: 1.5rem 0 0.4rem; }

.lede { font-size: 1.08rem; color: var(--host); }

a { color: var(--declared); }

/* The same four figure kinds the shell draws, so a reader learns the convention once. */
.declared { color: var(--declared); border-bottom: 1px dotted var(--declared); }
.computed { color: var(--computed); font-weight: 600; }
.derived { color: var(--derived); font-style: italic; border-bottom: 1px dashed var(--derived); }
.host-time { color: var(--host); font-style: italic; }

code, pre, .mono {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.85em;
}

code { background: #fff; border: 1px solid var(--rule); padding: 0 0.25em; border-radius: 2px; }

pre {
  background: #fff;
  border: 1px solid var(--rule);
  padding: 0.8rem 0.9rem;
  overflow-x: auto;
  line-height: 1.45;
}

pre code { background: none; border: none; padding: 0; }

table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.92rem; }

th, td {
  border-bottom: 1px solid var(--rule);
  padding: 0.4rem 0.6rem 0.4rem 0;
  text-align: left;
  vertical-align: top;
}

th { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--host); }

blockquote {
  margin: 1rem 0;
  padding: 0.1rem 0 0.1rem 1rem;
  border-left: 3px solid var(--rule);
  color: var(--host);
}

figure { margin: 1.5rem 0; }

figure img {
  max-width: 100%;
  border: 1px solid var(--rule);
  background: #fff;
  display: block;
}

figcaption { color: var(--host); font-size: 0.85rem; margin-top: 0.4rem; }

img { max-width: 100%; }

.post-list { list-style: none; padding: 0; }

.post-list li { border-bottom: 1px solid var(--rule); padding: 0.9rem 0; }

.post-list a { font-size: 1.1rem; text-decoration: none; }
.post-list a:hover { text-decoration: underline; }
.post-list time, .post-date { color: var(--host); font-size: 0.85rem; margin-left: 0.6rem; }
.post-list p { margin: 0.25rem 0 0; color: var(--host); font-size: 0.92rem; }
.post-date { margin: 0 0 1rem; display: block; }

dl.entries { margin: 0; }
dl.entries dt { font-weight: 700; margin-top: 1.1rem; }
dl.entries dd { margin: 0.2rem 0 0; }

footer {
  border-top: 1px solid var(--rule);
  max-width: 52rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
  color: var(--host);
  font-size: 0.85rem;
}

.banner {
  border: 2px solid var(--ink);
  background: #fff;
  padding: 0.9rem 1.1rem;
  margin: 1.25rem 0;
}

.banner.warn { border-color: var(--alarm); }
.banner p:last-child { margin-bottom: 0; }
.banner p:first-child { margin-top: 0; }