:root {
  --bg: #12151a;
  --panel: #171b22;
  --line: #262c36;
  --ink: #d7dce4;
  --dim: #8b94a3;
  --accent: #6ea8a1;
  --code: #1c212a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.65 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.mark {
  width: 34px;
  height: 34px;
  flex: none;
  border: 2px solid var(--accent);
  border-radius: 3px;
  background:
    linear-gradient(to right, var(--line) 1px, transparent 1px) 0 0 / 11px 11px,
    linear-gradient(to bottom, var(--line) 1px, transparent 1px) 0 0 / 11px 11px;
}

header h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.sub {
  margin: 0.1rem 0 0;
  color: var(--dim);
  font-size: 0.86rem;
}

header nav {
  margin-left: auto;
  display: flex;
  gap: 1.1rem;
  font-size: 0.9rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

a:hover { border-bottom-color: var(--accent); }

section { margin-top: 2.2rem; }

.intro p {
  margin: 0;
  font-size: 1.02rem;
  color: #c3cad4;
}

h2 {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

p { margin: 0 0 0.9rem; }

pre {
  margin: 0 0 0.9rem;
  padding: 0.85rem 1rem;
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow-x: auto;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.86rem;
}

p code {
  padding: 0.1rem 0.3rem;
  background: var(--code);
  border-radius: 3px;
}

.note {
  color: var(--dim);
  font-size: 0.92rem;
}

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

th, td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--line);
}

th {
  color: var(--dim);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

tbody tr:last-child td { border-bottom: none; }

td:first-child { color: #b6bec9; }

.state {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--accent);
  border-radius: 3px;
  color: var(--accent);
  font-size: 0.86rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

footer {
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  color: var(--dim);
  font-size: 0.82rem;
}

@media (max-width: 32rem) {
  .wrap { padding-top: 2rem; }
  header nav { margin-left: 0; width: 100%; }
}