:root {
  --paper: #fff;
  --ink: #171717;
  --mid: #777773;
  --light: #d8d8d4;
  --pale: #f2f2ef;
  --accent: #7a2026;
  --water: #9eafb5;
  --pad: clamp(18px, 3.2vw, 52px);
}

* { box-sizing: border-box; }

html { background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; }
body { margin: 0; min-height: 100vh; background: var(--paper); }
button, select, input { font: inherit; }
button, a, select, input { outline-offset: 4px; }

.masthead {
  min-height: 72px;
  padding: 0 var(--pad);
  display: grid;
  grid-template-columns: minmax(180px, .8fr) 2fr auto;
  align-items: center;
  border-bottom: 1px solid var(--ink);
  column-gap: 22px;
}
.wordmark, .audit-link { color: var(--ink); text-decoration: none; font-size: 12px; letter-spacing: .12em; }
.wordmark { font-weight: 700; }
.audit-link { text-align: right; }
.scope-line { display: flex; gap: 22px; font-size: 9px; letter-spacing: .13em; color: var(--mid); }

.app-shell { min-height: calc(100vh - 112px); }
.stage { min-height: calc(100vh - 112px); padding: 34px var(--pad) 44px; }
.stage-head { display: grid; grid-template-columns: 90px minmax(0, 1fr) minmax(220px, .42fr); gap: 24px; align-items: end; padding-bottom: 22px; border-bottom: 1px solid var(--light); }
.stage-index { font-size: 10px; letter-spacing: .16em; color: var(--accent); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(28px, 3.2vw, 52px); line-height: .98; font-weight: 400; letter-spacing: -.035em; }
h2 { font-size: clamp(24px, 2.35vw, 40px); line-height: 1.05; font-weight: 400; letter-spacing: -.025em; }
h3 { font-size: 10px; letter-spacing: .14em; font-weight: 700; text-transform: uppercase; }
.dek { margin: 0; color: var(--mid); font-size: 12px; line-height: 1.55; max-width: 38ch; }
.accent { color: var(--accent); }
.small { font-size: 11px; line-height: 1.5; color: var(--mid); }
.micro { font-size: 9px; line-height: 1.45; color: var(--mid); letter-spacing: .03em; }

.setup-grid { display: grid; grid-template-columns: minmax(250px, .62fr) minmax(520px, 1.55fr); min-height: 610px; }
.setup-copy { padding: 28px 36px 18px 0; border-right: 1px solid var(--light); }
.map-zone { padding: 22px 0 0 30px; min-width: 0; }
.map-frame { position: relative; width: 100%; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--light); background: white; }
.map-frame canvas { display: block; width: 100%; height: min(58vh, 610px); min-height: 390px; }
.map-key { display: flex; flex-wrap: wrap; gap: 14px 24px; padding: 10px 0 0; font-size: 9px; color: var(--mid); letter-spacing: .05em; }
.map-key span::before { content: ""; display: inline-block; width: 18px; height: 1px; background: var(--ink); margin: 0 7px 3px 0; }
.map-key .key-water::before { background: var(--water); }
.map-key .key-accent::before { height: 5px; background: var(--accent); opacity: .72; }

.policy-list, .mask-list { border-top: 1px solid var(--light); margin-top: 23px; }
.policy-row, .mask-row { display: grid; grid-template-columns: 28px 1fr; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--light); cursor: pointer; }
.policy-row input, .mask-row input { accent-color: var(--accent); margin-top: 2px; }
.policy-row strong, .mask-row strong { display: block; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.policy-row span, .mask-row span { display: block; margin-top: 4px; font-size: 10px; line-height: 1.45; color: var(--mid); }
.warning-rule { border-left: 2px solid var(--accent); padding: 1px 0 1px 12px; margin: 18px 0; font-size: 10px; line-height: 1.55; color: var(--accent); }

.button-row { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin-top: 24px; }
button { border: 0; border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink); padding: 10px 0 8px; cursor: pointer; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
button:hover, button:focus-visible { color: var(--accent); border-color: var(--accent); }
button.primary { border-top: 1px solid var(--accent); border-bottom: 1px solid var(--accent); color: var(--accent); padding: 11px 16px; }
button.quiet { color: var(--mid); border-color: var(--light); }

.settlement-stage { padding-bottom: 30px; }
.control-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--ink); }
.control-strip label { padding: 18px 24px 18px 0; border-right: 1px solid var(--light); font-size: 9px; letter-spacing: .09em; text-transform: uppercase; }
.control-strip label + label { padding-left: 24px; }
.control-strip label:last-child { border-right: 0; }
.control-strip select { display: block; width: 100%; margin: 8px 0 6px; padding: 8px 20px 8px 0; border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; background: white; font-size: 10px; letter-spacing: 0; text-transform: none; }
.control-strip small { display: block; min-height: 30px; color: var(--mid); line-height: 1.4; letter-spacing: 0; text-transform: none; }
.status-message { margin: 0; padding: 9px 0; border-bottom: 1px solid var(--accent); color: var(--accent); font-size: 10px; }
.review-grid { display: grid; grid-template-columns: minmax(580px, 1.52fr) minmax(350px, .68fr); gap: 32px; padding-top: 26px; }
.site-sheet { min-width: 0; }
.map-toolbar { display: flex; justify-content: space-between; gap: 20px; min-height: 40px; border-top: 1px solid var(--ink); padding-top: 9px; font-size: 9px; letter-spacing: .08em; }
.map-toolbar strong, .map-toolbar span { display: block; }
.map-toolbar span { margin-top: 3px; color: var(--mid); letter-spacing: 0; }
.layer-key { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px 12px; color: var(--mid); letter-spacing: 0; }
.layer-key i { display: inline-block; width: 15px; height: 5px; margin-top: 2px; background: var(--ink); }
.layer-key .candidate { background: var(--accent); opacity: .42; }
.layer-key .relation { height: 1px; background: #496f75; }
.layer-key .tension { height: 1px; background: repeating-linear-gradient(90deg, var(--accent) 0 3px, transparent 3px 5px); }
.site-sheet canvas { height: min(63vh, 670px); min-height: 500px; }
.projection-note { max-width: 88ch; margin: 9px 0 0; color: var(--mid); font-size: 9px; line-height: 1.45; }
.review-panel { border-top: 1px solid var(--ink); }
.mode-switch { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--ink); }
.mode-switch button { margin-right: 14px; border: 0; color: var(--mid); text-align: left; }
.mode-switch button.active { color: var(--accent); box-shadow: inset 0 -2px 0 var(--accent); }
.option-list { border-top: 1px solid var(--light); margin-top: 18px; }
.option-row { display: grid; grid-template-columns: 72px 1fr; width: 100%; padding: 11px 0; border-bottom: 1px solid var(--light); text-align: left; }
.option-row span { grid-row: 1 / 3; color: var(--accent); }
.option-row strong { font-size: 10px; font-weight: 400; }
.option-row small { display: block; margin-top: 3px; color: var(--mid); font-size: 9px; letter-spacing: 0; text-transform: none; }
.option-row.selected { border-bottom-color: var(--accent); }
.option-detail { padding-top: 18px; }
.bundle-glyph { display: grid; width: 154px; height: 76px; grid-template-columns: 1fr 1fr; margin: 12px 0 18px; }
.bundle-glyph.north, .bundle-glyph.south { width: 76px; height: 154px; grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
.bundle-glyph.north .support { grid-row: 1; }.bundle-glyph.north .core { grid-row: 2; }
.bundle-glyph.west .support { grid-column: 1; }.bundle-glyph.west .core { grid-column: 2; }
.cell { display: grid; place-items: center; border: 1px solid var(--ink); font-size: 8px; letter-spacing: .06em; }
.cell + .cell { margin-left: -1px; }.bundle-glyph.north .cell + .cell, .bundle-glyph.south .cell + .cell { margin-left: 0; margin-top: -1px; }
.cell.support { color: var(--accent); border-color: var(--accent); }
.option-detail dl { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 0 20px; border-top: 1px solid var(--light); }
.option-detail dl div { padding: 8px 10px 8px 0; border-bottom: 1px solid var(--light); }
.option-detail dt { color: var(--mid); font-size: 8px; text-transform: uppercase; }.option-detail dd { margin: 4px 0 0; font-size: 10px; }
.trade-ledger { list-style: none; padding: 0; margin: 0 0 18px; border-top: 1px solid var(--light); }
.trade-ledger li { display: grid; grid-template-columns: 1fr auto; padding: 7px 0; border-bottom: 1px solid var(--light); font-size: 9px; }
.trade-ledger b { font-weight: 400; color: var(--accent); }.trade-ledger em { grid-column: 1 / -1; margin-top: 3px; color: var(--mid); font-style: normal; }
.empty-rule { padding: 20px 0; border-bottom: 1px solid var(--accent); color: var(--accent); font-size: 11px; line-height: 1.5; }
.memory-ledger { display: grid; grid-template-columns: 1.1fr 1fr 1fr .8fr; gap: 0; margin-top: 34px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.memory-ledger > div { min-height: 180px; padding: 18px 22px 18px 0; border-right: 1px solid var(--light); }
.memory-ledger > div + div { padding-left: 22px; }.memory-ledger > div:last-child { border-right: 0; }
.memory-ledger h2 { font-size: 22px; }.memory-ledger p { font-size: 10px; line-height: 1.5; }.memory-ledger small { display: block; color: var(--mid); }
.memory-actions { display: flex; flex-direction: column; align-items: stretch; }
.file-action { border-bottom: 1px solid var(--ink); padding: 10px 0 8px; cursor: pointer; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.file-action input { position: absolute; width: 1px; height: 1px; opacity: 0; }

.conversation { display: grid; grid-template-columns: 180px minmax(0, 720px) 1fr; gap: 40px; padding-top: 36px; }
.progress { border-top: 1px solid var(--ink); }
.progress-row { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--light); font-size: 9px; line-height: 1.35; color: var(--mid); }
.progress-row.current { color: var(--accent); }
.question-panel { min-height: 500px; }
.question-label { color: var(--accent); font-size: 10px; letter-spacing: .14em; margin-bottom: 18px; }
.question-panel h2 { max-width: 22ch; }
.field-group { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 24px; border-top: 1px solid var(--light); padding-top: 22px; margin-top: 28px; }
.field { min-width: 0; }
.field label, .field legend { display: block; margin-bottom: 8px; font-size: 9px; letter-spacing: .09em; text-transform: uppercase; color: var(--mid); }
.field select { width: 100%; background: white; border: 0; border-bottom: 1px solid var(--ink); padding: 9px 24px 9px 0; border-radius: 0; color: var(--ink); }
.field input[type="number"] { width: 100%; border: 0; border-bottom: 1px solid var(--ink); padding: 9px 0; }
.context-note { border-top: 1px solid var(--light); padding-top: 13px; font-size: 10px; line-height: 1.6; color: var(--mid); }

.confirm-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(260px, .62fr); gap: 40px; padding-top: 34px; }
.profile-ledger { border-top: 1px solid var(--ink); }
.ledger-row { display: grid; grid-template-columns: 180px 1fr; gap: 20px; padding: 12px 0; border-bottom: 1px solid var(--light); }
.ledger-row dt { font-size: 9px; letter-spacing: .09em; color: var(--mid); text-transform: uppercase; }
.ledger-row dd { margin: 0; font-size: 12px; line-height: 1.5; }

.evidence-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 32px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.evidence-column { padding: 18px 22px 24px 0; min-height: 290px; border-right: 1px solid var(--light); }
.evidence-column + .evidence-column { padding-left: 22px; }
.evidence-column:last-child { border-right: 0; }
.evidence-column ol, .evidence-column ul { list-style: none; padding: 0; margin: 18px 0 0; }
.evidence-column li { border-top: 1px solid var(--light); padding: 8px 0; font-size: 10px; line-height: 1.4; color: var(--mid); }

.result-layout { display: grid; grid-template-columns: minmax(560px, 1.45fr) minmax(330px, .65fr); gap: 32px; padding-top: 28px; }
.result-map canvas { height: min(58vh, 610px); min-height: 440px; }
.result-copy { border-top: 1px solid var(--ink); }
.result-stat { display: grid; grid-template-columns: 1fr auto; gap: 15px; padding: 11px 0; border-bottom: 1px solid var(--light); font-size: 10px; }
.result-stat strong { color: var(--accent); font-weight: 400; }
.sample-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--ink); }
.sample-tabs button { text-align: left; border-bottom: 0; padding: 12px 6px 10px 0; }
.sample-tabs button.active { color: var(--accent); }
.sample-detail { padding-top: 18px; }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; border-top: 1px solid var(--light); }
.metric { padding: 7px 0; border-bottom: 1px solid var(--light); font-size: 9px; color: var(--mid); }
.metric b { display: block; margin-top: 3px; color: var(--ink); font-size: 11px; font-weight: 400; }
.explanation { margin-top: 20px; }
.explanation ul { list-style: none; padding: 0; margin: 8px 0 18px; }
.explanation li { padding: 6px 0 6px 14px; border-top: 1px solid var(--light); font-size: 10px; line-height: 1.45; color: var(--mid); position: relative; }
.explanation li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

.audit-shell { padding: 34px var(--pad) 60px; }
.audit-title { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 20px; padding-bottom: 22px; border-bottom: 1px solid var(--ink); }
.audit-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--ink); }
.audit-block { min-height: 210px; padding: 20px 22px 24px 0; border-right: 1px solid var(--light); overflow-wrap: anywhere; }
.audit-block + .audit-block { padding-left: 22px; }
.audit-block:last-child { border-right: 0; }
.audit-block pre { white-space: pre-wrap; font: 9px/1.5 "Courier New", monospace; color: var(--mid); }
.audit-table { width: 100%; border-collapse: collapse; margin-top: 28px; font-size: 9px; }
.audit-table th, .audit-table td { text-align: left; padding: 8px 7px; border-bottom: 1px solid var(--light); vertical-align: top; }
.audit-table th { color: var(--mid); font-weight: 400; letter-spacing: .08em; text-transform: uppercase; }

footer { min-height: 40px; padding: 0 var(--pad); border-top: 1px solid var(--ink); display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 9px; letter-spacing: .06em; color: var(--mid); }

@media (max-width: 1050px) {
  .masthead { grid-template-columns: 1fr auto; }
  .scope-line { grid-column: 1 / -1; grid-row: 2; padding-bottom: 12px; }
  .setup-grid, .result-layout { grid-template-columns: 1fr; }
  .setup-copy { border-right: 0; border-bottom: 1px solid var(--light); padding-right: 0; }
  .map-zone { padding-left: 0; }
  .conversation { grid-template-columns: 140px minmax(0, 1fr); }
  .context-note { grid-column: 2; }
  .evidence-grid, .audit-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
  .memory-ledger { grid-template-columns: repeat(2, 1fr); }
  .evidence-column:nth-child(2), .audit-block:nth-child(2) { border-right: 0; }
}

@media (max-width: 620px) {
  .masthead { min-height: 96px; padding-top: 16px; align-items: start; }
  .audit-link { font-size: 9px; }
  .scope-line { gap: 7px 13px; flex-wrap: wrap; font-size: 8px; }
  .stage { padding-top: 24px; }
  .stage-head { grid-template-columns: 38px 1fr; gap: 12px; }
  .stage-head .dek { grid-column: 2; }
  h1 { font-size: 31px; }
  .setup-grid { min-height: 0; }
  .setup-copy { padding-top: 20px; }
  .map-frame canvas, .result-map canvas { min-height: 330px; height: 45vh; }
  .conversation { grid-template-columns: 1fr; gap: 24px; }
  .progress { display: grid; grid-template-columns: repeat(6, 1fr); }
  .progress-row { grid-template-columns: 1fr; padding: 8px 2px; }
  .progress-row span:last-child { display: none; }
  .context-note { grid-column: 1; }
  .field-group { grid-template-columns: 1fr; }
  .confirm-layout { grid-template-columns: 1fr; }
  .ledger-row { grid-template-columns: 110px 1fr; }
  .evidence-grid, .audit-grid { grid-template-columns: 1fr; }
  .evidence-column, .evidence-column + .evidence-column, .audit-block, .audit-block + .audit-block { padding: 16px 0; border-right: 0; border-bottom: 1px solid var(--light); min-height: 0; }
  .result-layout { grid-template-columns: minmax(0, 1fr); }
  .control-strip, .memory-ledger { grid-template-columns: 1fr; }
  .control-strip label, .control-strip label + label, .memory-ledger > div, .memory-ledger > div + div { padding: 14px 0; border-right: 0; border-bottom: 1px solid var(--light); }
  .site-sheet canvas { min-height: 380px; height: 52vh; }
  .map-toolbar { display: block; }.layer-key { justify-content: flex-start; margin-top: 9px; }
  .option-detail dl { grid-template-columns: 1fr; }
  .sample-tabs { position: sticky; top: 0; background: white; z-index: 10; }
  footer { align-items: flex-start; padding-top: 10px; padding-bottom: 10px; flex-direction: column; gap: 4px; }
}

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