:root {
  --ground: #e8e0d1;
  --paper: #fbf7ed;
  --paper-deep: #f0e8d9;
  --ink: #211f1b;
  --muted: #71695f;
  --rule: #b9ad9b;
  --warm: #885234;
  --commission: #334f5b;
  --hugh: #5a4933;
  --ticket: #232725;
  --light: #f6f0e6;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { background: var(--ground); color: var(--ink); }
body { margin: 0; font-family: var(--sans); }
a { color: inherit; }
button { font: inherit; }

.topbar,
main,
footer {
  width: min(70rem, calc(100% - 2rem));
  margin-inline: auto;
}

.topbar {
  min-height: 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  font: 700 .62rem/1 var(--mono);
  letter-spacing: .09em;
  text-transform: uppercase;
}

.topbar a { text-decoration: none; }
.topbar span { color: var(--muted); }

main { padding: clamp(2.4rem, 7vw, 6rem) 0 4rem; }
.approach { max-width: 56rem; margin-bottom: clamp(2rem, 5vw, 4rem); }
.kicker,
.folio {
  font: 700 .64rem/1.2 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--warm);
}

h1 {
  max-width: 11ch;
  margin: .55rem 0 1rem;
  font: 700 clamp(3.6rem, 9vw, 8rem)/.84 var(--serif);
  letter-spacing: -.055em;
}

.lead {
  max-width: 44rem;
  margin: 0;
  font: 1.12rem/1.55 var(--serif);
}

.examination {
  border: 1px solid var(--ink);
  background: var(--paper);
  box-shadow: 0 1.2rem 3rem rgba(45, 37, 27, .08);
}

.object-head {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1rem, 3vw, 1.75rem);
  border-bottom: 1px solid var(--ink);
}

.object-head h2 {
  margin: .35rem 0 0;
  font: 700 clamp(1.6rem, 4vw, 2.8rem)/1 var(--serif);
}

.state-mark { min-width: 10rem; text-align: right; }
.state-mark span,
.state-mark strong { display: block; }
.state-mark span {
  color: var(--muted);
  font: 700 .58rem/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.state-mark strong { margin-top: .45rem; font: 700 .82rem/1.2 var(--mono); text-transform: uppercase; }

.turns { padding: 0 clamp(1rem, 3vw, 1.75rem); }
.pair {
  position: relative;
  display: grid;
  grid-template-columns: minmax(9rem, .7fr) minmax(0, 2fr);
  border-bottom: 1px solid var(--rule);
  animation: reveal .42s ease both;
}

.pair:last-child { border-bottom: 0; }
.pair-label {
  padding: 1.25rem 1.25rem 1.25rem 0;
  color: var(--muted);
  font: 700 .59rem/1.45 var(--mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.pair-label strong { display: block; margin-top: .35rem; color: var(--ink); }
.pair-body { border-left: 1px solid var(--rule); }

.turn { padding: 1.2rem 1.35rem; }
.turn + .turn { border-top: 1px dotted var(--rule); }
.turn-meta {
  display: flex;
  gap: .7rem;
  justify-content: space-between;
  margin-bottom: .45rem;
  font: 700 .57rem/1.25 var(--mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.turn.question .turn-meta { color: var(--commission); }
.turn.answer .turn-meta { color: var(--hugh); }
.turn blockquote { margin: 0; font: 1.2rem/1.48 var(--serif); }
.turn.answer blockquote { font-size: 1.38rem; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 1rem clamp(1rem, 3vw, 1.75rem);
  border-top: 1px solid var(--ink);
  background: var(--paper-deep);
}
.controls button {
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  padding: .72rem .85rem;
  cursor: pointer;
  font: 700 .61rem/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.controls .primary { background: var(--ink); color: var(--paper); }
.controls button:disabled { opacity: .34; cursor: not-allowed; }
.controls button:focus-visible,
.source-return a:focus-visible,
.follow-forward button:focus-visible { outline: 3px solid #be8a52; outline-offset: 3px; }

.control-note {
  margin: 0;
  padding: 0 clamp(1rem, 3vw, 1.75rem) 1rem;
  background: var(--paper-deep);
  color: var(--muted);
  font: .68rem/1.45 var(--mono);
}

.source-return { border-top: 1px solid var(--rule); }
.source-return summary {
  padding: 1rem clamp(1rem, 3vw, 1.75rem);
  cursor: pointer;
  font: 700 .66rem/1 var(--mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.source-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 0 clamp(1rem, 3vw, 1.75rem) 1.5rem;
}
.source-grid div { border-top: 1px solid var(--rule); padding-top: .75rem; }
.source-grid span,
.source-grid strong,
.source-grid a { display: block; }
.source-grid span { color: var(--muted); font: 700 .56rem/1 var(--mono); text-transform: uppercase; }
.source-grid strong { margin: .35rem 0 .65rem; font-family: var(--serif); }
.source-grid a { font: 700 .63rem/1.3 var(--mono); text-transform: uppercase; }

.ticket-panel {
  margin-top: 1.2rem;
  background: var(--ticket);
  color: var(--light);
  padding: clamp(1rem, 3vw, 1.75rem);
  animation: reveal .42s ease both;
}
.ticket-panel header span { color: #beb7ad; font: 700 .58rem/1 var(--mono); text-transform: uppercase; }
.ticket-panel h2 { margin: .4rem 0 1rem; font: 700 clamp(1.5rem, 4vw, 2.5rem)/1 var(--serif); }
.ticket-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid #5b605d; }
.ticket-field { padding: .9rem 1rem .9rem 0; border-bottom: 1px solid #5b605d; }
.ticket-field:nth-child(even) { padding-left: 1rem; border-left: 1px solid #5b605d; }
.ticket-field dt { color: #beb7ad; font: 700 .55rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.ticket-field dd { margin: .42rem 0 0; font: .95rem/1.45 var(--serif); }
.ticket-field ul { margin: .35rem 0 0; padding-left: 1.1rem; }
.ticket-field li + li { margin-top: .3rem; }
.handoff-brake { margin: 1rem 0 0; color: #d7d0c5; font: .68rem/1.5 var(--mono); }

.follow-forward {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid #5b605d;
}
.follow-forward[hidden] { display: none; }
.follow-forward p { margin: 0; max-width: 44rem; color: #d7d0c5; font: .72rem/1.5 var(--mono); }
.follow-forward button {
  flex: none;
  border: 1px solid var(--light);
  background: var(--light);
  color: var(--ticket);
  padding: .72rem .85rem;
  cursor: pointer;
  font: 700 .61rem/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.follow-forward button:disabled { opacity: .45; cursor: not-allowed; }

.continuation { margin-top: 1.2rem; }
.gap-note {
  margin: 0;
  padding: 1rem clamp(1rem, 3vw, 1.75rem);
  border-bottom: 1px solid var(--rule);
  background: var(--paper-deep);
  color: var(--muted);
  font: .7rem/1.5 var(--mono);
}

.error { border: 1px solid #7c3d36; color: #7c3d36; padding: 1rem; }
footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0 2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font: 700 .57rem/1.45 var(--mono);
  letter-spacing: .05em;
  text-transform: uppercase;
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(.55rem); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; }
}

@media (max-width: 44rem) {
  .topbar,
  main,
  footer { width: min(100% - 1rem, 70rem); }
  .topbar span { display: none; }
  h1 { font-size: 3.6rem; }
  .object-head { display: block; }
  .state-mark { margin-top: 1rem; text-align: left; }
  .pair { grid-template-columns: 1fr; }
  .pair-label { padding-right: 0; padding-bottom: .65rem; }
  .pair-body { border-left: 0; border-top: 1px solid var(--rule); }
  .controls { display: grid; grid-template-columns: 1fr; }
  .controls button { width: 100%; }
  .source-grid,
  .ticket-fields { grid-template-columns: 1fr; }
  .follow-forward { align-items: stretch; flex-direction: column; }
  .follow-forward button { width: 100%; }
  .ticket-field:nth-child(even) { padding-left: 0; border-left: 0; }
  footer { flex-direction: column; }
}