*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink: #1a1a1a;
  --soft: #6b6b6b;
  --faint: #9a9a9a;
}

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  background: #fff;
  color: var(--ink);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-weight: 400;
  font-size: 12px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.card {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 32px;
  font-size: 13px;
  color: var(--soft);
}

h1 {
  font-weight: 400;
  font-size: 22px;
  line-height: 1.2;
  color: var(--ink);
}

.archive { margin-top: 40px; }

h2 {
  font-weight: 500;
  font-size: 13px;
  margin: 28px 0 10px;
}

details + details { margin-top: 20px; }

summary {
  list-style: none;
  cursor: pointer;
  display: inline-block;
}
summary::-webkit-details-marker { display: none; }

summary h2 { display: inline; margin: 0; }
summary h2::before {
  content: "+";
  display: inline-block;
  width: 2ch;
  color: var(--faint);
  font-weight: 400;
}
details[open] > summary h2::before { content: "–"; }
summary:hover h2 { text-decoration: underline; text-underline-offset: 3px; }

details > :not(summary) { margin-top: 10px; }

.archive ul { list-style: none; }

.archive li {
  color: var(--soft);
  padding: 3px 0;
}

.t { color: var(--ink); }

.sample { color: var(--ink); margin-left: 1ch; text-decoration: underline; text-underline-offset: 3px; }

.archive .sub { margin: 2px 0 0 2ch; }
.archive .sub li { padding: 1px 0; }
.archive .sub li::before { content: "+ "; color: var(--faint); }

.tour {
  margin: 2px 0 4px 2ch;
  color: var(--faint);
  font-size: 11px;
  font-style: italic;
  font-weight: 300;
}

@media (max-width: 720px) {
  .card { padding: 32px 16px; }
  .top { flex-direction: column; gap: 4px; }
  .archive li { padding: 5px 0; }
}