/* FINCORE — Financial Operation Chaos Lab
 *
 * Design rules, held to deliberately:
 *   - Typography carries the hierarchy, not colour and not boxes. The result is
 *     an oversized tabular numeral; everything else is small and quiet.
 *   - Colour means something or is absent. Green = one effect. Red = a second
 *     effect. Amber = uncertain. Nothing is coloured for decoration.
 *   - Rules are hairlines at low alpha, never a mid-grey 1px box. Almost
 *     nothing on this page has a border on all four sides.
 *   - One family, six sizes. Mono only for machine identifiers.
 *   - Motion explains causality: events descend a spine in execution order.
 * System fonts only. No remote asset of any kind (the CSP forbids it).
 */

:root {
  --bg:        #0a0a0b;
  --bg-lift:   #0f0f11;
  --ink:       #eceae6;
  --ink-2:     #a3a099;
  --ink-3:     #6d6a64;
  --rule:      rgba(236, 234, 230, 0.09);
  --rule-2:    rgba(236, 234, 230, 0.05);

  --ok:        #6fb58a;
  --warn:      #d6a64a;
  --bad:       #db6a55;
  --info:      #8aa4c8;

  --ok-wash:   rgba(111, 181, 138, 0.10);
  --warn-wash: rgba(214, 166, 74, 0.10);
  --bad-wash:  rgba(219, 106, 85, 0.10);

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --gutter: 40px;
  --measure: 1180px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body { overflow-x: hidden; }

.mono { font-family: var(--mono); font-variant-ligatures: none; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.eyebrow {
  display: block;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
}

/* ------------------------------------------------------------------ masthead */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px var(--gutter) 18px;
  border-bottom: 1px solid var(--rule-2);
}

.wordmark { display: flex; align-items: center; gap: 14px; min-width: 0; }

.wordmark .mark {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.22em;
}

.wordmark .rule { width: 26px; height: 1px; background: var(--rule); flex: none; }

.wordmark .sub {
  font-size: 12.5px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.masthead-right { display: flex; align-items: center; gap: 18px; }

.sandbox-pill {
  font-size: 11px;
  color: var(--warn);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.link-btn {
  font-size: 12.5px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color .15s ease, border-color .15s ease;
}
.link-btn:hover { color: var(--ink); border-color: var(--ink-3); }
.link-btn:focus-visible { outline: 1px solid var(--info); outline-offset: 3px; }

main { max-width: var(--measure); margin: 0 auto; padding: 0 var(--gutter) 72px; }

/* ---------------------------------------------------------------------- hook */
.hook { padding: 58px 0 42px; }

.hook h1 {
  margin: 0;
  font-size: 62px;
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 600;
}

.lede {
  margin: 22px 0 0;
  max-width: 54ch;
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.6;
}

/* --------------------------------------------------------------------- bench */
.bench {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 56px;
  padding: 34px 0;
  border-top: 1px solid var(--rule);
}

.subject { align-self: start; }

.subject-amount {
  margin-top: 12px;
  font-size: 60px;
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.subject-amount .cur { color: var(--ink-3); font-size: 34px; vertical-align: 10px; }

.subject-meta { margin: 22px 0 0; display: grid; gap: 9px; }
.subject-meta > div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule-2);
}
.subject-meta dt { font-size: 11.5px; color: var(--ink-3); margin: 0; }
.subject-meta dd { margin: 0; font-size: 12.5px; }

.status { color: var(--ink-2); }
.status[data-tone="run"]  { color: var(--info); }
.status[data-tone="good"] { color: var(--ok); }
.status[data-tone="warn"] { color: var(--warn); }
.status[data-tone="bad"]  { color: var(--bad); }

/* ------------------------------------------------------------------- controls */
.modes { margin-top: 14px; display: flex; flex-direction: column; }

.mode {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule-2);
  text-align: left;
  color: var(--ink-2);
  transition: color .15s ease;
}
.mode:hover { color: var(--ink); }
.mode:focus-visible { outline: 1px solid var(--info); outline-offset: 2px; }

.mode-idx {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  min-width: 22px;
}

.mode-name { font-size: 17px; letter-spacing: -0.01em; }

.mode[aria-selected="true"] { color: var(--ink); }
.mode[aria-selected="true"] .mode-idx { color: var(--ok); }
.mode[aria-selected="true"] .mode-name { font-weight: 600; }
.mode[aria-selected="true"]::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
  align-self: center;
}

.mode-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-2);
  max-width: 52ch;
  min-height: 42px;
}

.mode-control { margin-top: 6px; min-height: 0; }
.mode-control:not(:empty) { margin-top: 16px; }

.seg { display: flex; gap: 8px; align-items: center; }
.seg-label { font-size: 11.5px; color: var(--ink-3); margin-right: 6px; }

.seg button {
  font-family: var(--mono);
  font-size: 13px;
  padding: 6px 13px;
  color: var(--ink-2);
  border: 1px solid var(--rule);
  border-radius: 2px;
  transition: all .14s ease;
}
.seg button:hover { color: var(--ink); border-color: var(--ink-3); }
.seg button[aria-pressed="true"] {
  color: var(--bg);
  background: var(--ink);
  border-color: var(--ink);
}

.amount-field { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.amount-field label { font-size: 11.5px; color: var(--ink-3); }

.amount-input {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  border-bottom: 1px solid var(--ink-3);
  padding: 2px 2px 4px;
}
.amount-input span { color: var(--ink-3); font-size: 15px; }
.amount-input input {
  width: 72px;
  font-family: var(--mono);
  font-size: 19px;
  color: var(--ink);
  background: none;
  border: 0;
  padding: 0;
  font-variant-numeric: tabular-nums;
}
.amount-input input:focus { outline: none; }
.amount-input:focus-within { border-color: var(--info); }
.amount-input input::-webkit-outer-spin-button,
.amount-input input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.amount-input input[type=number] { -moz-appearance: textfield; }

.amount-hint { font-size: 11.5px; color: var(--ink-3); }
.amount-hint[data-error="1"] { color: var(--bad); }

.cta-row { display: flex; align-items: center; gap: 22px; margin-top: 28px; }

.primary {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--bg);
  background: var(--ink);
  padding: 14px 30px;
  border-radius: 2px;
  transition: transform .08s ease, opacity .15s ease;
}
.primary:hover { opacity: .88; }
.primary:active { transform: translateY(1px); }
.primary:disabled { opacity: .35; cursor: default; }
.primary:focus-visible { outline: 2px solid var(--info); outline-offset: 3px; }

.cta-hint { margin: 10px 0 0; font-size: 11.5px; color: var(--ink-3); min-height: 16px; }

/* -------------------------------------------------------------------- canvas */
.canvas { padding: 26px 0 8px; border-top: 1px solid var(--rule); }

.canvas-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.flow { display: grid; gap: 46px; }
.flow[data-split="1"] { grid-template-columns: 1fr 1fr; }

/* --- one execution spine --- */
.spine { min-width: 0; }

.spine-title {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--rule);
}
.spine[data-kind="naive"] .spine-title { color: var(--bad); }
.spine[data-kind="fincore"] .spine-title { color: var(--ok); }

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

.step {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 14px;
  padding: 9px 0 9px 2px;
  animation: rise .28s cubic-bezier(.2, .7, .3, 1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* The spine itself: a hairline threaded through the glyph column. */
.step-mark {
  position: relative;
  display: flex;
  justify-content: center;
  color: var(--ink-3);
  font-size: 12px;
  line-height: 1.55;
}
.step-mark::before {
  content: "";
  position: absolute;
  top: -9px; bottom: -9px; left: 50%;
  width: 1px;
  background: var(--rule);
  transform: translateX(-50%);
}
.step:first-child .step-mark::before { top: 50%; }
.step:last-child  .step-mark::before { bottom: 50%; }

.step-dot {
  position: relative;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink-3);
  align-self: center;
  box-shadow: 0 0 0 4px var(--bg);
}

.step[data-tone="good"] .step-dot { background: var(--ok); }
.step[data-tone="warn"] .step-dot { background: var(--warn); }
.step[data-tone="bad"]  .step-dot { background: var(--bad); }
.step[data-tone="info"] .step-dot { background: var(--info); }

.step-text { min-width: 0; }

.step-plain { font-size: 15px; letter-spacing: -0.005em; }
.step[data-tone="bad"]  .step-plain { color: #f0a294; }
.step[data-tone="warn"] .step-plain { color: #e8c88a; }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 1px 6px;
  margin-left: 8px;
  border-radius: 2px;
  vertical-align: 1.5px;
  color: var(--ink-2);
  background: rgba(236, 234, 230, 0.06);
}
.badge[data-tone="warn"] { color: var(--warn); background: var(--warn-wash); }
.badge[data-tone="good"] { color: var(--ok);   background: var(--ok-wash); }
.badge[data-tone="bad"]  { color: var(--bad);  background: var(--bad-wash); }

.step-tech {
  margin-top: 3px;
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- the 20-caller swarm --- */
.swarm { margin: 6px 0 20px; }

.swarm-track {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding-bottom: 18px;
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--rule);
}

.swarm-track::after {
  content: "runtime boundary";
  position: absolute;
  right: 0; bottom: -9px;
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--bg);
  padding-left: 8px;
}

.caller {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(236, 234, 230, 0.22);
  animation: rise .3s ease both;
}
.caller[data-owner="1"] {
  background: var(--ok);
  box-shadow: 0 0 0 3px var(--ok-wash);
}

.swarm-legend { display: flex; gap: 22px; font-size: 11.5px; color: var(--ink-3); }
.swarm-legend b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------- verdict */
.verdict { padding: 30px 0 0; border-top: 1px solid var(--rule); }

/* ------------------------------------------------------- the answer, first */
.answer { margin-bottom: 34px; }

.answer-q {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
  margin-bottom: 14px;
}

.answer-row { display: flex; flex-wrap: wrap; gap: 40px; }

.answer-card { display: flex; flex-direction: column; gap: 4px; min-width: 0; }

.answer-label { font-size: 12px; color: var(--ink-3); }

.answer-verdict {
  font-size: 26px;
  letter-spacing: -0.025em;
  font-weight: 550;
  color: var(--ok);
}
.answer-card[data-yes="1"] .answer-verdict { color: var(--bad); }

.answer-detail { font-size: 12px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------- causal diagrams */
.stage-viz:not(:empty) { margin-bottom: 36px; }

.viz {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 22px 24px;
  border: 1px solid var(--rule-2);
  border-radius: 3px;
  background: var(--bg-lift);
}

.vstage {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 9px 0;
  animation: viz-in .34s cubic-bezier(.2, .75, .3, 1) both;
}

@keyframes viz-in {
  from { opacity: 0; transform: translateY(7px); }
  to   { opacity: 1; transform: none; }
}

.viz-actor {
  flex: none;
  min-width: 116px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  padding-top: 1px;
}
.viz-actor-quiet { color: var(--ink-3); }

.viz-body { min-width: 0; display: flex; flex-direction: column; gap: 5px; align-items: flex-start; }

.viz-line { font-size: 14.5px; letter-spacing: -0.005em; }
.viz-ok { color: var(--ok); }
.viz-sub { font-size: 12px; color: var(--ink-3); font-family: var(--mono); }

.viz-crash-mark {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--bad);
  padding: 3px 9px;
  border: 1px solid rgba(219, 106, 85, 0.35);
  border-radius: 2px;
  background: var(--bad-wash);
}

/* One simulated financial effect, carried across the diagram. */
.effect-token {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px 6px 10px;
  border: 1px solid rgba(111, 181, 138, 0.32);
  border-radius: 999px;
  background: var(--ok-wash);
  font-variant-numeric: tabular-nums;
}
.effect-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); flex: none; }
.effect-amt { font-size: 13.5px; color: var(--ink); }
.effect-note { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }

.vstage-final {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--rule-2);
}

.viz-tally { display: flex; align-items: baseline; flex-wrap: wrap; gap: 9px; font-size: 14px; }
.viz-tally b {
  font-size: 30px;
  font-weight: 550;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.viz-tally span { color: var(--ink-2); }
.viz-tally i { color: var(--ink-3); font-style: normal; opacity: .5; }

/* ------------------------------------------------------------- caller swarm */
.viz-swarm { gap: 0; }

.swarm-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 0 12px;
  min-height: 22px;
}

.swarm-crossed { padding-top: 12px; }
.swarm-out { padding-top: 12px; gap: 16px; }

.caller {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(236, 234, 230, 0.3);
  animation: viz-in .3s ease both;
  transition: background .3s ease, opacity .3s ease;
}
/* Turned away: still present, visibly inert. Not deleted -- they happened. */
.caller[data-turned="1"] { background: rgba(236, 234, 230, 0.16); }
.caller[data-owner="1"] {
  background: var(--ok);
  box-shadow: 0 0 0 3px var(--ok-wash);
}
.caller-crossed {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px var(--ok-wash);
  animation: cross .5s cubic-bezier(.2, .8, .3, 1) both;
}

@keyframes cross {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: none; }
}

.viz-boundary {
  position: relative;
  border-top: 1px dashed rgba(236, 234, 230, 0.18);
  margin: 2px 0;
}
.viz-boundary-label {
  position: absolute;
  right: 0; top: -8px;
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--bg-lift);
  padding-left: 10px;
}
.viz-boundary-provider { border-top-style: solid; border-top-color: var(--rule); }

.swarm-caption { font-size: 12px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.viz-headline {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--rule-2);
  font-size: 15px;
}
.viz-headline b {
  font-size: 32px;
  font-weight: 550;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.viz-headline span { color: var(--ink-2); }

/* --------------------------------------------------------- conflict boundary */
.viz-lane {
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.viz-lane-label {
  flex: none;
  min-width: 66px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.viz-amount {
  font-size: 20px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  min-width: 68px;
}

.viz-arrow { color: var(--ink-3); font-size: 14px; }
.viz-stop { color: var(--bad); font-size: 15px; font-weight: 700; }

.viz-gate {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 11px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink-2);
}

.viz-endpoint { font-size: 13px; color: var(--ink-2); }
.viz-endpoint[data-blocked="1"] { color: var(--ink-3); text-decoration: line-through; }

.viz-lane-note { font-size: 12px; color: var(--ink-3); }
.viz-lane-note[data-tone="bad"] { color: #e79b8b; }
.viz-lane-note[data-tone="good"] { color: var(--ok); }

.money { margin-bottom: 34px; }

.money-lanes {
  display: grid;
  gap: 26px;
  margin-top: 16px;
}
.money-lanes[data-split="1"] { grid-template-columns: 1fr 1fr; }

.money-lane { display: flex; flex-direction: column; gap: 12px; }

.money-lane-label { font-size: 12px; color: var(--ink-3); letter-spacing: 0.04em; }

.coins { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.coin {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px 7px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  animation: coin-in .34s cubic-bezier(.2, .8, .3, 1) both;
}
.coin::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
}
.coin[data-dup="1"] { border-color: rgba(219, 106, 85, 0.4); background: var(--bad-wash); }
.coin[data-dup="1"]::before { background: var(--bad); }

@keyframes coin-in {
  from { opacity: 0; transform: scale(.86); }
  to   { opacity: 1; transform: none; }
}

.money-total { font-size: 12.5px; color: var(--ink-3); }
.money-total b {
  color: var(--ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.money-total[data-dup="1"] b { color: var(--bad); }

/* --- the big numbers --- */
.scoreboard { display: grid; gap: 40px; }
.scoreboard[data-split="1"] { grid-template-columns: 1fr 1fr; }

.score-lane { min-width: 0; }

.score-head {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-3);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}
.score-lane[data-kind="naive"] .score-head { color: var(--bad); }
.score-lane[data-kind="fincore"] .score-head { color: var(--ok); }

.headline {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 24px 0 6px;
}

.headline-num {
  font-size: 88px;
  line-height: 0.82;
  letter-spacing: -0.05em;
  font-weight: 550;
  font-variant-numeric: tabular-nums;
  animation: rise .4s cubic-bezier(.2, .8, .3, 1) both;
}
.headline-num[data-tone="good"] { color: var(--ok); }
.headline-num[data-tone="bad"]  { color: var(--bad); }
.headline-num[data-tone="warn"] { color: var(--warn); }

.headline-cap { font-size: 14px; color: var(--ink-2); max-width: 15ch; line-height: 1.3; }

.final-state {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 5px 11px;
  border-radius: 2px;
}
.final-state[data-tone="good"] { color: var(--ok);  background: var(--ok-wash); }
.final-state[data-tone="bad"]  { color: var(--bad); background: var(--bad-wash); }
.final-state[data-tone="warn"] { color: var(--warn); background: var(--warn-wash); }

.counters { margin-top: 24px; display: grid; gap: 0; }

.counter {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid var(--rule-2);
}
.counter dt { font-size: 12.5px; color: var(--ink-3); }
.counter dd {
  margin: 0;
  font-size: 15px;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.counter dd[data-tone="bad"]  { color: var(--bad); }
.counter dd[data-tone="good"] { color: var(--ok); }

.principle {
  margin: 44px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink-2);
  max-width: 62ch;
}

/* The four identities, kept as quiet technical detail under the principle
   rather than as a headline -- a reviewer who wants it will read it. */
.identity-chain {
  margin: 12px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.identity-chain i { font-style: normal; color: var(--ink-3); opacity: .5; }
.identity-chain span:first-child { color: var(--ink-2); }

/* ----------------------------------------------------------------- internals */
.internals { margin-top: 26px; }

.internals summary {
  display: flex;
  align-items: center;
  gap: 9px;
  list-style: none;
  cursor: pointer;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 10px 0;
  transition: color .15s ease;
}
.internals summary::-webkit-details-marker { display: none; }
.internals summary:hover { color: var(--ink-2); }

.chev {
  width: 6px; height: 6px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(-45deg);
  transition: transform .18s ease;
}
.internals[open] .chev { transform: rotate(45deg); }

.internals-body {
  padding-top: 12px;
  display: grid;
  gap: 34px;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
}

.int-group h4 {
  margin: 0 0 8px;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
}

.int-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 6px 0;
  border-bottom: 1px solid var(--rule-2);
  font-size: 12px;
}
.int-row span:first-child { color: var(--ink-3); white-space: nowrap; }
.int-row span:last-child {
  font-family: var(--mono);
  text-align: right;
  overflow-wrap: anywhere;
}

/* -------------------------------------------------------------------- drawer */
.drawer-scrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 40;
  animation: fade .2s ease both;
}
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }

.drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(440px, 92vw);
  background: var(--bg-lift);
  border-left: 1px solid var(--rule);
  z-index: 41;
  padding: 24px 28px 32px;
  overflow-y: auto;
  animation: slide-in .26s cubic-bezier(.2, .8, .3, 1) both;
}
@keyframes slide-in { from { transform: translateX(16px); opacity: 0 } to { transform: none; opacity: 1 } }

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}

.drawer-note {
  margin: 18px 0 26px;
  font-size: 13px;
  color: var(--warn);
  line-height: 1.55;
}

.ev {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule-2);
  text-decoration: none;
  color: inherit;
}
.ev:hover .ev-t { color: var(--info); }

.ev-k {
  display: block;
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
}
.ev-t { display: block; margin-top: 5px; font-size: 14px; transition: color .15s ease; }
.ev-d { display: block; margin-top: 5px; font-size: 12.5px; color: var(--ink-3); line-height: 1.5; }

.drawer-foot { margin-top: 24px; font-size: 11.5px; color: var(--ink-3); line-height: 1.6; }

/* -------------------------------------------------------------------- states */
.error-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--bad);
}

/* Once an experiment has run, the hook has done its job. It contracts so the
   flow and the result sit close together -- on a 1366x768 laptop the result
   must be reachable, not buried under a headline the reviewer already read. */
body.ran .hook { padding: 26px 0 20px; }
body.ran .hook h1 { font-size: 34px; }
body.ran .lede { display: none; }
body.ran .bench { padding: 22px 0; }
body.ran .subject-amount { font-size: 42px; }
body.ran .mode-note { display: none; }
body.ran .hook h1,
body.ran .bench { transition: none; }

/* ================================================================= responsive */

/* 1366x768 is the tightest laptop target: the hook shrinks so the bench and the
   first result stay reachable without hunting. */
@media (max-height: 800px) {
  .hook { padding: 34px 0 26px; }
  .hook h1 { font-size: 46px; }
  .lede { margin-top: 16px; font-size: 15px; }
  .bench { padding: 26px 0; }
  .subject-amount { font-size: 48px; }
  .headline-num { font-size: 72px; }
}

@media (max-width: 1120px) {
  :root { --gutter: 28px; }
  .hook h1 { font-size: 48px; }
  .bench { grid-template-columns: 200px 1fr; gap: 36px; }
}

@media (max-width: 860px) {
  :root { --gutter: 20px; }
  .masthead { flex-wrap: wrap; gap: 10px; padding-bottom: 14px; }
  .sandbox-pill { font-size: 10px; }
  .wordmark .sub { display: none; }

  .hook { padding: 34px 0 26px; }
  .hook h1 { font-size: 36px; }
  .lede { font-size: 15px; }

  .bench { grid-template-columns: 1fr; gap: 30px; }
  .subject-amount { font-size: 44px; }

  /* Two lanes cannot both be legible on a phone; stack them. */
  .flow[data-split="1"],
  .money-lanes[data-split="1"],
  .scoreboard[data-split="1"] { grid-template-columns: 1fr; }

  .flow { gap: 30px; }
  .scoreboard { gap: 30px; }
  .headline-num { font-size: 62px; }
  .principle { font-size: 15px; }
  .internals-body { grid-template-columns: 1fr; gap: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* Diagrams stack on narrow screens: a row of actor/arrow/endpoint cannot stay
   legible at phone width, so each stage becomes a block. */
@media (max-width: 860px) {
  .viz { padding: 18px 16px; }
  .vstage { flex-direction: column; gap: 8px; }
  .viz-actor { min-width: 0; }
  .answer-row { gap: 24px; }
  .answer-verdict { font-size: 22px; }
  .viz-tally b, .viz-headline b { font-size: 26px; }
  .viz-lane { flex-direction: row; }
  .viz-amount { font-size: 18px; min-width: 60px; }
}

/* ------------------------------------------------------- execution readiness
   A small honest status, not a page-dominating spinner. The dot pulses only
   while genuinely waiting; it never implies a percentage, because there is no
   real percentage to report. */
.engine { display: inline-flex; align-items: center; gap: 8px; }

.engine-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink-3);
  flex: none;
}

.engine-text { display: inline-flex; align-items: baseline; gap: 7px; white-space: nowrap; }

.engine-label {
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.engine-value { font-size: 11.5px; color: var(--ink-2); }

.engine[data-state="checking"] .engine-dot,
.engine[data-state="waking"] .engine-dot {
  background: var(--warn);
  animation: engine-pulse 1.5s ease-in-out infinite;
}
.engine[data-state="checking"] .engine-value,
.engine[data-state="waking"] .engine-value { color: var(--warn); }

.engine[data-state="ready"] .engine-dot { background: var(--ok); }
.engine[data-state="ready"] .engine-value { color: var(--ok); }

.engine[data-state="slow"] .engine-dot { background: var(--bad); }
.engine[data-state="slow"] .engine-value { color: var(--bad); }

@keyframes engine-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}

.engine-note {
  margin: 10px 0 0;
  font-size: 11.5px;
  color: var(--ink-3);
  max-width: 52ch;
  line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
  .engine-dot { animation: none !important; }
}

@media (max-width: 860px) {
  .engine-label { display: none; }
}