:root {
  color-scheme: light;
  --paper: #f7f7f2;
  --surface: #fffefa;
  --ink: #20392e;
  --text: #33463c;
  --muted: #69736b;
  --green: #245a40;
  --pale: #e9eee6;
  --rule: #d9dfd3;
  --gold: #926f2f;
  --gold-light: #f5efdF;
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--text);
}
* { box-sizing: border-box; }
body { margin: 0; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .6; }
button, a, input { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
a { color: inherit; text-underline-offset: 4px; }
button { color: inherit; }
[hidden] { display: none !important; }
.shell { max-width: 1280px; padding: 0 54px; margin: 0 auto; }
.masthead { display: flex; justify-content: space-between; align-items: center; padding: 26px 0; border-bottom: 1px solid var(--rule); }
.wordmark { display: flex; gap: 10px; align-items: center; font: 600 11px/1.4 ui-monospace, monospace; letter-spacing: .13em; text-decoration: none; }
.brand-mark { font-size: 25px; line-height: 1; color: var(--green); }
.demo-label { font-size: 11px; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.status-dot { height: 6px; width: 6px; border-radius: 50%; background: #789581; }
.hero { display: grid; grid-template-columns: 1.35fr 1fr; gap: 50px; align-items: end; padding: 62px 0 42px; }
.eyebrow { margin: 0 0 13px; font: 10px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .13em; color: var(--muted); }
h1 { font: 400 clamp(46px, 5.3vw, 69px)/1.05 Georgia, "Times New Roman", serif; letter-spacing: -.047em; margin: 17px 0 0; color: var(--ink); }
.hero-aside { max-width: 370px; padding-bottom: 3px; }
.hero-aside > p:first-child { font-size: 17px; line-height: 1.6; margin: 0 0 10px; }
.hero-aside em { color: var(--green); font-style: normal; font-weight: 600; }
.intro { color: var(--muted); font-size: 13px; margin: 0 0 20px; }
.button { border: 1px solid var(--green); border-radius: 4px; padding: 10px 17px; font-size: 12px; font-weight: 600; display: inline-flex; gap: 9px; align-items: center; justify-content: center; }
.primary { color: #fffefa; background: var(--green); }
.primary:hover:not(:disabled) { background: #17432d; }
.secondary { background: transparent; }
.secondary:hover:not(:disabled) { background: var(--pale); }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.principles > div { display: flex; gap: 16px; align-items: center; padding: 20px 0; }
.principles > div + div { border-left: 1px solid var(--rule); padding-left: 28px; }
.step-index { font: 11px ui-monospace, monospace; color: #83927f; }
.principles p { margin: 0; display: grid; gap: 2px; }
.principles strong { font-size: 13px; font-weight: 600; }
.principles p span { font-size: 11px; color: var(--muted); }
.archive { padding-top: 35px; }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 15px; }
h2 { font-size: 14px; font-weight: 600; margin: 0; color: var(--ink); }
.small-note { font-size: 10px; color: var(--muted); }
.room-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.room-card { position: relative; text-align: left; padding: 18px; border: 1px solid var(--rule); background: transparent; border-radius: 5px; min-height: 186px; transition: border-color .15s, background .15s; }
.room-card:hover { border-color: #8a9c85; background: #f0f2eb; }
.room-card.selected { border-color: var(--green); background: var(--surface); box-shadow: inset 0 3px var(--green); }
.room-card[data-status="locked"] { border-style: dashed; }
.room-card[data-status="solved"] .room-number { color: var(--green); }
.room-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 27px; }
.room-number { font: 24px/1 Georgia, serif; color: #8c9d8b; }
.room-state { font: 9px ui-monospace, monospace; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.room-state.solved { color: var(--green); }
.room-state.sealed { color: #a34230; }
.room-name { display: block; font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.room-summary { display: block; font-size: 11px; line-height: 1.5; color: var(--muted); }
.room-type { display: block; margin-top: 14px; font: 9px ui-monospace, monospace; text-transform: uppercase; letter-spacing: .08em; }
.dependency-note { display: flex; align-items: center; gap: 14px; justify-content: center; padding: 15px 3px 25px; color: var(--muted); font: 10px/1.6 ui-monospace, monospace; text-align: center; }
.line-rule { flex: 1; height: 1px; background: var(--rule); }
.workspace { display: grid; grid-template-columns: 1.2fr 1fr; gap: 22px; align-items: stretch; }
.room-workspace { border: 1px solid var(--rule); border-radius: 5px; background: var(--surface); padding: 22px 25px 10px; min-width: 0; }
.perspective-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 25px; }
.perspective-row > .eyebrow { margin: 0; font-size: 9px; }
.agent-switcher { display: flex; gap: 4px; }
.agent-tab { border: 1px solid transparent; background: transparent; padding: 5px 8px; font: 10px ui-monospace, monospace; border-radius: 3px; color: var(--muted); }
.agent-tab[aria-pressed="true"] { color: var(--green); background: var(--pale); border-color: #d6e0d0; }
.inspect-heading { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.inspect-heading h2 { font: 26px/1.25 Georgia, serif; letter-spacing: -.025em; }
.inspect-heading .eyebrow { margin: 0; }
.instruction { font-size: 12px; color: var(--muted); margin: 0 0 17px; }
.clue-box { background: #f4f5ef; border: 1px solid #e2e6dc; border-radius: 3px; padding: 16px; margin: 13px 0 17px; }
.clue-label { display: block; font: 9px/1.4 ui-monospace, monospace; letter-spacing: .09em; color: var(--muted); margin-bottom: 10px; }
.symbol-strip { display: flex; gap: 8px; margin-bottom: 14px; }
.symbol-strip span { display: inline-block; background: var(--surface); border: 1px solid var(--rule); border-radius: 2px; padding: 7px 16px; font: 13px ui-monospace, monospace; }
.codebook { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; font: 10px/1.8 ui-monospace, monospace; color: var(--muted); }
.clue-list { margin: 0; padding-left: 18px; font-size: 12px; line-height: 2; }
.catalog { width: 100%; border-collapse: collapse; font-size: 11px; }
.catalog th { text-align: left; font-weight: 400; color: var(--muted); padding: 0 0 8px; }
.catalog td { padding: 5px 0; border-top: 1px solid var(--rule); }
.catalog td:first-child { font-family: ui-monospace, monospace; }
.answer-label { font-size: 10px; display: flex; justify-content: space-between; margin-bottom: 7px; color: var(--muted); }
.answer-row { display: flex; gap: 8px; }
input { color: var(--text); border: 1px solid var(--rule); background: var(--surface); border-radius: 3px; padding: 10px 12px; min-width: 0; }
input::placeholder { color: #869083; }
.answer-row input { flex: 1; width: 0; font: 12px ui-monospace, monospace; }
.answer-row .button { padding: 10px 13px; }
.feedback { font-size: 11px; margin: 10px 0 0; min-height: 20px; color: var(--green); }
.feedback.error { color: #a34230; }
.packet { background: var(--gold-light); border: 1px solid #e4d6b7; border-radius: 3px; padding: 15px; margin-top: 18px; }
.packet .eyebrow { color: var(--gold); font-size: 9px; margin-bottom: 9px; }
.packet-tokens { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 12px; }
.packet-tokens span { font: 12px ui-monospace, monospace; padding: 5px 8px; background: #fffcf3; border: 1px solid #e8dcc1; border-radius: 2px; }
.packet p { font-size: 11px; color: #7d6d4e; margin: 0 0 12px; }
.packet .button { font-size: 11px; padding: 7px 12px; border-color: #a68e56; color: #755820; }
.room-notice { padding: 17px; border: 1px solid var(--rule); background: var(--pale); border-radius: 3px; font-size: 12px; margin: 14px 0; }
.locked-panel { min-height: 250px; display: grid; align-content: center; text-align: center; gap: 8px; padding: 25px; border: 1px dashed var(--rule); }
.locked-panel .lock-symbol { font: 32px Georgia, serif; color: #8c9d8b; }
.locked-panel p { font-size: 12px; margin: 0; color: var(--muted); }
.vault-recipe { display: grid; gap: 10px; font: 11px ui-monospace, monospace; }
.vault-recipe div { display: flex; justify-content: space-between; gap: 10px; }
.vault-recipe span { color: var(--muted); }
.board { display: flex; flex-direction: column; border: 1px solid var(--rule); border-radius: 5px; min-width: 0; background: #f1f3eb; }
.board-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 20px 14px; gap: 10px; border-bottom: 1px solid var(--rule); }
.board-header .eyebrow { margin-bottom: 6px; font-size: 9px; }
.board-header h2 { font: 13px ui-monospace, monospace; }
.hash { color: #8b9d85; }
.message-count { font: 9px ui-monospace, monospace; color: var(--muted); white-space: nowrap; }
.messages { height: 264px; flex: 1; min-height: 180px; max-height: 380px; overflow: auto; padding: 17px 20px; scrollbar-width: thin; }
.message { padding: 0 0 16px; }
.message:last-child { padding-bottom: 2px; }
.message-sender { font: 10px ui-monospace, monospace; color: var(--green); }
.message p { font-size: 12px; line-height: 1.7; margin: 4px 0 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.message.system { padding-bottom: 14px; }
.message.system p { font-size: 11px; color: var(--muted); border-left: 2px solid #cbd5c6; padding-left: 10px; }
.message.system .message-sender { display: none; }
.message-form { display: flex; gap: 8px; margin: 12px 16px 0; }
.message-form input { flex: 1; font-size: 11px; }
.send-button { width: 36px; border: 1px solid #b9c8b2; border-radius: 3px; background: #e0e8d9; font-size: 19px; }
.board-note { font-size: 9px; color: var(--muted); margin: 10px 16px 15px; }
.completion { display: flex; align-items: center; gap: 20px; margin-top: 22px; padding: 23px; border: 1px solid #c7d8bd; background: var(--pale); border-radius: 4px; }
.completion-mark { font-size: 28px; color: var(--green); }
.completion .eyebrow { margin-bottom: 5px; }
.completion h2 { font: 25px Georgia, serif; }
.completion p:last-child { margin: 8px 0 0; font-size: 12px; color: var(--muted); }
.run-bar { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--rule); font: 10px ui-monospace, monospace; color: var(--muted); }
.text-button { background: transparent; border: none; padding: 4px 0; color: var(--green); font-size: 11px; white-space: nowrap; }
.text-button:hover { text-decoration: underline; text-underline-offset: 3px; }
.notes { display: grid; grid-template-columns: 1fr 1fr; gap: 55px; padding: 35px 0; }
.notes h3 { margin: 0 0 8px; font-size: 12px; font-weight: 600; }
.notes p { margin: 0; font-size: 11px; line-height: 1.9; color: var(--muted); }
.notes strong { font-weight: 600; color: var(--text); }
footer { padding: 20px 0 27px; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 20px; font: 9px/1.6 ui-monospace, monospace; color: var(--muted); }
footer a { text-decoration: none; }
footer a:hover { text-decoration: underline; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.no-script { border: 1px solid var(--rule); padding: 20px; }
@media (max-width: 900px) {
  .shell { padding: 0 28px; }
  .hero { gap: 30px; padding-top: 45px; }
  .hero-aside > p:first-child { font-size: 15px; }
  .room-card { padding: 15px; min-height: 191px; }
  .room-name { font-size: 13px; }
  .workspace { grid-template-columns: 1.15fr 1fr; gap: 14px; }
  .room-workspace { padding: 19px 18px 10px; }
  .perspective-row { align-items: flex-start; }
  .run-bar { font-size: 9px; }
}
@media (max-width: 670px) {
  .shell { padding: 0 20px; }
  .masthead { padding: 21px 0; }
  .wordmark { font-size: 9px; gap: 7px; letter-spacing: .06em; }
  .demo-label { font-size: 9px; }
  .hero { grid-template-columns: 1fr; gap: 23px; padding: 37px 0 28px; }
  h1 { font-size: 53px; }
  .hero-aside { max-width: 100%; }
  .hero-aside > p:first-child { font-size: 15px; }
  .hero-aside > p:first-child br { display: none; }
  .intro { max-width: 360px; font-size: 12px; }
  .principles > div { gap: 8px; padding: 16px 0; align-items: flex-start; }
  .principles > div + div { padding-left: 11px; }
  .principles strong { font-size: 12px; }
  .principles p span { font-size: 10px; max-width: 85px; line-height: 1.5; }
  .step-index { font-size: 9px; padding-top: 3px; }
  .archive { padding-top: 27px; }
  .section-heading { align-items: flex-start; gap: 15px; }
  .small-note { max-width: 180px; text-align: right; font-size: 9px; }
  .room-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .room-card { min-height: 180px; padding: 15px; }
  .room-card-top { margin-bottom: 20px; }
  .room-name { font-size: 14px; }
  .room-summary { font-size: 11px; }
  .room-type { font-size: 9px; }
  .dependency-note { font-size: 9px; gap: 7px; }
  .dependency-note > span:nth-child(2) { max-width: 265px; }
  .workspace { grid-template-columns: 1fr; gap: 18px; }
  .perspective-row { align-items: center; }
  .messages { height: 230px; flex: auto; }
  .run-bar { flex-wrap: wrap; font-size: 9px; gap: 7px 12px; }
  .run-bar > span { order: 3; flex-basis: 100%; }
  .notes { grid-template-columns: 1fr; gap: 24px; padding: 28px 0; }
  footer { flex-wrap: wrap; gap: 8px 18px; font-size: 9px; }
  footer > span:first-child { flex-basis: 100%; }
  .completion h2 { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}