:root {
  --ink: #1d2528;
  --ink-soft: #55666c;
  --paper: #f4f1ea;
  --panel: #fbf9f5;
  --rule: #ddd6c8;
  --accent: #2f6f7e;
  --measure: 36rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #dfe5e6;
    --ink-soft: #9aacb1;
    --paper: #14191b;
    --panel: #1b2224;
    --rule: #2c3639;
    --accent: #6fb3c2;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 1.25rem 4rem;
  background: var(--paper);
  color: var(--ink);
  font: 1rem/1.65 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  -webkit-text-size-adjust: 100%;
}

header.site {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1rem 2rem;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem 0 1.25rem;
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}

header.site nav {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
  font-size: 0.9rem;
}

header.site nav a { color: var(--ink-soft); }

main {
  max-width: var(--measure);
  margin: 0 auto;
}

section { margin: 2.75rem 0; }

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  font-weight: 600;
  margin: 1.5rem 0 1rem;
}

h2 {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
  margin: 0 0 1.25rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
}

p { margin: 0 0 1rem; }

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

.lede p {
  font-size: 1.1rem;
  color: var(--ink-soft);
}

ul.notes {
  list-style: none;
  margin: 0;
  padding: 0;
}

ul.notes li {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 1.25rem 1.25rem 0.5rem;
  margin-bottom: 1rem;
}

ul.notes h3 a { text-decoration: none; }
ul.notes h3 a:hover { text-decoration: underline; }

.meta {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

dl.figures { margin: 0 0 1.5rem; }
dl.figures dt {
  font-weight: 600;
  margin-top: 1rem;
}
dl.figures dd {
  margin: 0.2rem 0 0;
  color: var(--ink-soft);
}

table.tide {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
table.tide th,
table.tide td {
  text-align: left;
  padding: 0.5rem 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--rule);
}
table.tide th {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
}

blockquote {
  margin: 1.5rem 0;
  padding-left: 1.25rem;
  border-left: 2px solid var(--rule);
  color: var(--ink-soft);
}

footer {
  max-width: var(--measure);
  margin: 3.5rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

@media (max-width: 30rem) {
  header.site nav { margin-left: 0; }
  h1 { font-size: 1.45rem; }
}