@font-face {
  font-family: "Instrument Sans";
  src: url("/fonts/instrument-sans.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Serif";
  src: url("/fonts/instrument-serif-italic.woff2") format("woff2");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-plex-mono-500.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

:root,
html[data-theme="dark"] {
  --bg: #080807;
  --surface: #11100e;
  --surface-raised: #171613;
  --surface-soft: #211f1b;
  --ink: #f4eee3;
  --ink-strong: #fffaf2;
  --muted: #aaa49a;
  --quiet: #7a756d;
  --line: #34312d;
  --line-strong: #514b44;
  --signal: #c8ff37;
  --signal-ink: #11100e;
  --risk: #c95f37;
  --risk-soft: #3a2018;
  --structure: #b28ab5;
  --structure-soft: #2a1b2c;
  --shadow: 0 30px 90px rgba(0, 0, 0, .28);
}

html[data-theme="light"] {
  --bg: #f4eee3;
  --surface: #fffaf2;
  --surface-raised: #ffffff;
  --surface-soft: #e9e1d2;
  --ink: #11100e;
  --ink-strong: #080807;
  --muted: #6e675e;
  --quiet: #8b8277;
  --line: #cec3b4;
  --line-strong: #a69b8c;
  --signal: #c8ff37;
  --signal-ink: #11100e;
  --risk: #a94729;
  --risk-soft: #f1d8cc;
  --structure: #653966;
  --structure-soft: #e7d8e7;
  --shadow: 0 30px 80px rgba(75, 60, 40, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--bg);
  font-family: "Instrument Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  transition: background-color .25s ease, color .25s ease;
}

button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }

.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 14px; color: var(--signal-ink); background: var(--signal); }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }

.site-header {
  width: min(1280px, calc(100% - 48px));
  height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand-lockup { display: flex; align-items: center; gap: 9px; min-width: 0; }
.brand-mark { width: 30px; height: 30px; display: grid; place-items: center; flex: 0 0 auto; }
.brand-mark-ab { padding: 5px; background: #080807; border: 1px solid #35322e; }
.brand-mark-aixcel { padding: 4px; background: var(--surface-raised); border: 1px solid var(--line); }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-name { font-size: 13px; font-weight: 650; letter-spacing: -.01em; white-space: nowrap; }
.brand-cross { color: var(--quiet); font-family: "IBM Plex Mono", monospace; font-size: 11px; }
.header-tools > a { color: var(--muted); font-size: 13px; font-weight: 600; }
.header-tools > a:hover { color: var(--ink); }
.status-pill { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font: 500 11px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .08em; }
.status-pill i, .runtime-state i { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 4px color-mix(in srgb, var(--signal) 13%, transparent); }

.hero { min-height: 620px; padding: 105px 0 84px; display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 90px; align-items: end; }
.hero-copy { max-width: 760px; }
.kicker, .section-label, .proof-label {
  margin: 0 0 18px;
  color: var(--muted);
  font: 500 11px/1.3 "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .11em;
}
.kicker { display: flex; align-items: center; gap: 14px; }
.kicker::before { content: ""; width: 30px; height: 1px; background: var(--signal); }
.kicker span { color: var(--quiet); }
.hero h1 { margin: 0; max-width: 850px; font-size: clamp(54px, 7.5vw, 100px); line-height: .91; letter-spacing: -.065em; font-weight: 600; }
.hero h1 em { color: var(--signal); font-family: "Instrument Serif", Georgia, serif; font-weight: 400; }
html[data-theme="light"] .hero h1 em { color: var(--structure); }
.hero-intro { max-width: 680px; margin: 32px 0 0; color: var(--muted); font-size: clamp(17px, 1.7vw, 20px); line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; padding: 0 19px; border: 1px solid var(--line-strong); font-size: 14px; font-weight: 650; }
.button-primary { color: var(--signal-ink); background: var(--signal); border-color: var(--signal); }
.button-primary:hover { background: var(--ink-strong); border-color: var(--ink-strong); }
.button-quiet:hover { border-color: var(--ink); }

.hero-proof { padding: 22px 0 0; border-top: 1px solid var(--line-strong); }
.proof-grid { display: grid; grid-template-columns: 1fr 1fr; }
.proof-grid div { min-height: 100px; display: flex; flex-direction: column; justify-content: space-between; padding: 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof-grid div:nth-child(2n) { border-right: 0; }
.proof-grid strong { font-size: 30px; line-height: 1; letter-spacing: -.04em; }
.proof-grid span { color: var(--muted); font: 500 11px/1.2 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .06em; }
.proof-note { margin: 18px 0 0; color: var(--quiet); font-size: 12px; }

.deal-lab { margin-bottom: 110px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.lab-header { min-height: 104px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 28px; border-bottom: 1px solid var(--line); }
.lab-header .section-label { margin-bottom: 7px; }
.lab-header h2 { margin: 0; font-size: clamp(25px, 3vw, 34px); letter-spacing: -.035em; }
.runtime-state { display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font: 500 11px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .08em; }
.runtime-state.running i { background: var(--structure); animation: runtime-pulse 1s ease-in-out infinite alternate; }
.runtime-state.blocked i { background: var(--risk); }

.lab-grid { display: grid; grid-template-columns: 330px minmax(0, 1fr); min-height: 710px; }
.control-panel { display: flex; flex-direction: column; border-right: 1px solid var(--line); background: color-mix(in srgb, var(--surface-raised) 50%, var(--surface)); }
.control-panel form { padding: 28px; }
.field { margin-bottom: 20px; }
.field label, .split-field label { display: block; margin-bottom: 8px; color: var(--muted); font: 500 11px/1.2 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .07em; }
.field select, .field input[type="number"], .field textarea { width: 100%; color: var(--ink); background: var(--surface); border: 1px solid var(--line-strong); border-radius: 0; }
.field select, .field input[type="number"] { height: 46px; padding: 0 12px; }
.field textarea { padding: 11px 12px; line-height: 1.4; resize: vertical; }
.field select:focus, .field input:focus, .field textarea:focus { border-color: var(--signal); outline: 0; box-shadow: 0 0 0 1px var(--signal); }
.field > p { margin: 8px 0 0; color: var(--quiet); font-size: 12px; line-height: 1.45; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.split-field { display: grid; grid-template-columns: 1fr auto; }
.split-field output { color: var(--signal); font: 500 12px/1 "IBM Plex Mono", monospace; }
.split-field input { grid-column: 1 / -1; width: 100%; margin-top: 8px; accent-color: var(--signal); }
.editor-toggle { width: 100%; min-height: 44px; display: flex; align-items: center; justify-content: space-between; margin: 6px 0 20px; padding: 0; color: var(--ink); background: transparent; border: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); cursor: pointer; font-size: 13px; font-weight: 650; }
.editor-toggle[aria-expanded="true"] span:last-child { transform: rotate(45deg); }
.deal-editor { margin-bottom: 22px; padding: 18px; background: var(--surface-soft); border-left: 2px solid var(--structure); }
.editor-intro { display: flex; flex-direction: column; gap: 4px; margin-bottom: 20px; }
.editor-intro strong { font-size: 13px; }
.editor-intro span { color: var(--muted); font-size: 12px; line-height: 1.4; }
.check-row { display: flex; align-items: center; gap: 10px; margin: -6px 0 20px; color: var(--muted); font-size: 12px; }
.check-row input { accent-color: var(--signal); }
.run-button { width: 100%; min-height: 50px; display: flex; align-items: center; justify-content: space-between; padding: 0 17px; color: var(--signal-ink); background: var(--signal); border: 1px solid var(--signal); cursor: pointer; font-weight: 700; }
.run-button:hover { background: var(--ink-strong); border-color: var(--ink-strong); }
.run-button:disabled { opacity: .55; cursor: wait; }
.control-boundary { margin-top: auto; padding: 22px 28px; border-top: 1px solid var(--line); }
.control-boundary span { color: var(--risk); font: 500 10px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .08em; }
.control-boundary p { margin: 8px 0 0; color: var(--quiet); font-size: 12px; line-height: 1.5; }

.result-panel { min-width: 0; position: relative; }
.empty-state, .loading-state, .error-state { min-height: 710px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 48px; text-align: center; }
.empty-state h3, .error-state h3 { max-width: 560px; margin: 0; font-size: clamp(27px, 4vw, 46px); line-height: 1.02; letter-spacing: -.045em; }
.empty-state > p:last-child, .error-state p { max-width: 520px; margin: 20px 0 0; color: var(--muted); }
.empty-orbit { width: 126px; height: 126px; position: relative; margin-bottom: 34px; border: 1px solid var(--line-strong); border-radius: 50%; }
.empty-orbit::after { content: ""; width: 44px; height: 44px; position: absolute; inset: 0; margin: auto; border: 1px solid var(--line-strong); transform: rotate(45deg); }
.empty-orbit span { width: 10px; height: 10px; position: absolute; top: 14px; right: 22px; border-radius: 50%; background: var(--signal); }
.empty-orbit i { width: 8px; height: 8px; position: absolute; bottom: 23px; left: 18px; border-radius: 50%; background: var(--risk); }
.loading-state { align-items: stretch; justify-content: flex-start; text-align: left; }
.loading-head { display: flex; align-items: center; gap: 16px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.loading-head div { display: flex; flex-direction: column; }
.loading-head small { margin-top: 5px; color: var(--muted); }
.loading-spinner { width: 32px; height: 32px; border: 2px solid var(--line); border-top-color: var(--signal); border-radius: 50%; animation: spin .8s linear infinite; }
.agent-progress { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 28px; background: var(--line); border: 1px solid var(--line); }
.agent-progress div { min-height: 82px; padding: 17px; background: var(--surface); }
.agent-progress span { display: block; color: var(--quiet); font: 500 10px/1 "IBM Plex Mono", monospace; }
.agent-progress strong { display: block; margin-top: 9px; font-size: 13px; }
.agent-progress div.active { box-shadow: inset 3px 0 var(--signal); }
.error-state > span { margin-bottom: 14px; color: var(--risk); font: 500 11px/1 "IBM Plex Mono", monospace; letter-spacing: .09em; }

.run-result { padding: 30px; }
.result-head { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.result-head .section-label { margin-bottom: 6px; }
.result-head h3 { margin: 0; font-size: 24px; letter-spacing: -.03em; }
.run-status { align-self: flex-start; padding: 7px 10px; color: var(--signal-ink); background: var(--signal); font: 500 10px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .06em; }
.run-status.blocked { color: var(--ink-strong); background: var(--risk); }

.forecast-tension { padding: 28px 0; border-bottom: 1px solid var(--line); }
.forecast-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.forecast-heading .section-label { margin-bottom: 6px; }
.forecast-heading h4 { margin: 0; font-size: 17px; }
.forecast-heading > span { color: var(--risk); font: 500 11px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .06em; }
.forecast-pair { display: grid; grid-template-columns: 1fr 86px 1fr; align-items: stretch; }
.forecast-card { min-width: 0; padding: 18px; border: 1px solid var(--line-strong); }
.forecast-card span { display: block; color: var(--muted); font: 500 10px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .07em; }
.forecast-card strong { display: block; margin-top: 17px; font-size: 25px; line-height: 1; text-transform: capitalize; letter-spacing: -.035em; }
.forecast-card b { display: block; margin-top: 8px; color: var(--muted); font: 500 12px/1 "IBM Plex Mono", monospace; }
.evidence-card { border-color: var(--structure); }
.evidence-card strong { color: var(--structure); }
.tension-line { position: relative; display: flex; align-items: center; }
.tension-line span { width: 100%; height: 1px; background: var(--line-strong); }
.tension-line i { width: 9px; height: 9px; position: absolute; z-index: 1; border-radius: 50%; }
.tension-line i:first-child { left: 0; background: var(--risk); }
.tension-line i:last-child { right: 0; background: var(--structure); }

.metric-row { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.metric-row article { min-width: 0; padding: 20px 12px; border-right: 1px solid var(--line); }
.metric-row article:first-child { padding-left: 0; }
.metric-row article:last-child { border-right: 0; }
.metric-row span { display: block; color: var(--muted); font: 500 9px/1.2 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .06em; }
.metric-row strong { display: block; margin-top: 10px; font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.result-tabs { display: flex; gap: 28px; margin-top: 6px; border-bottom: 1px solid var(--line); }
.tab-button { position: relative; padding: 19px 0 15px; color: var(--muted); background: transparent; border: 0; cursor: pointer; font-size: 13px; font-weight: 650; }
.tab-button.active { color: var(--ink); }
.tab-button.active::after { content: ""; height: 2px; position: absolute; left: 0; right: 0; bottom: -1px; background: var(--signal); }
.tab-panel { padding: 24px 0 2px; }
.decision-line { margin: 0 0 24px; padding: 16px 18px; color: var(--ink); background: var(--surface-soft); border-left: 2px solid var(--signal); font-size: 15px; }
.decision-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.decision-columns section > header { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.decision-columns h4 { margin: 0; font-size: 14px; }
.decision-columns header span { color: var(--quiet); font: 500 9px/1.4 "IBM Plex Mono", monospace; text-transform: uppercase; }
.finding-list, .objection-list { display: grid; gap: 8px; }
.finding-item, .objection-item { padding: 14px; border: 1px solid var(--line); }
.finding-top, .objection-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.severity { color: var(--risk); font: 500 9px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .06em; }
.finding-item strong, .objection-item strong { font-size: 13px; }
.finding-item p, .objection-item blockquote { margin: 9px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.objection-item blockquote { padding-left: 10px; border-left: 1px solid var(--structure); }
.empty-list { padding: 26px 16px; color: var(--muted); border: 1px dashed var(--line-strong); font-size: 12px; text-align: center; }

.evidence-list, .trace-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.evidence-row, .trace-row { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 18px; padding: 15px; background: var(--surface); }
.evidence-row span, .trace-row span { color: var(--structure); font: 500 9px/1.4 "IBM Plex Mono", monospace; text-transform: uppercase; word-break: break-all; }
.evidence-row p, .trace-row p { margin: 0; color: var(--muted); font-size: 12px; }
.evidence-row p strong, .trace-row p strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 12px; }

.approval-panel { margin-top: 26px; padding: 22px; background: var(--structure-soft); border: 1px solid var(--structure); }
.approval-copy .section-label { margin-bottom: 7px; }
.approval-copy h4 { margin: 0; font-size: 20px; }
.approval-copy p:last-child { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.approval-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.approval-actions button { min-height: 42px; padding: 0 16px; color: var(--ink); background: transparent; border: 1px solid var(--line-strong); cursor: pointer; font-weight: 650; }
.approval-actions .approve-button { color: var(--signal-ink); background: var(--signal); border-color: var(--signal); }
.approval-actions button:disabled { opacity: .5; cursor: wait; }
.approval-boundary { margin: 16px 0 0; padding-top: 14px; color: var(--quiet); border-top: 1px solid color-mix(in srgb, var(--structure) 55%, transparent); font-size: 11px; }

.proof-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof-strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-strip-grid div { min-height: 156px; display: flex; flex-direction: column; padding: 30px 22px; border-right: 1px solid var(--line); }
.proof-strip-grid div:first-child { padding-left: 0; }
.proof-strip-grid div:last-child { border-right: 0; }
.proof-strip-grid span { color: var(--muted); font: 500 10px/1.3 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .07em; }
.proof-strip-grid strong { margin-top: auto; font-size: 25px; letter-spacing: -.03em; }
.proof-strip-grid small { margin-top: 6px; color: var(--quiet); font-size: 11px; }

.system-section, .technical-section, .governance-section, .boundary-section { padding-block: 120px; }
.section-heading { max-width: 780px; margin-bottom: 54px; }
.section-heading.compact { margin-bottom: 38px; }
.section-heading h2, .technical-copy h2, .boundary-section h2 { margin: 0; font-size: clamp(38px, 5.5vw, 70px); line-height: .98; letter-spacing: -.055em; }
.section-heading > p:last-child, .technical-copy > p { max-width: 680px; margin: 24px 0 0; color: var(--muted); font-size: 17px; }

.architecture-card { background: var(--surface); border: 1px solid var(--line); }
.architecture-flow { display: grid; grid-template-columns: 1fr 36px 1fr 36px 1.6fr 36px 1fr 36px 1fr; align-items: stretch; padding: 34px; }
.arch-node, .arch-cluster { min-height: 142px; padding: 16px; border: 1px solid var(--line-strong); }
.arch-node { display: flex; flex-direction: column; }
.arch-node span, .arch-cluster > span { color: var(--quiet); font: 500 9px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .06em; }
.arch-node strong { margin-top: auto; font-size: 13px; line-height: 1.3; }
.arch-node small { margin-top: 7px; color: var(--muted); font-size: 10px; line-height: 1.35; }
.arch-node.gate { border-color: var(--risk); }
.arch-node.truth { border-color: var(--structure); }
.arch-node.approval { color: var(--signal-ink); background: var(--signal); border-color: var(--signal); }
.arch-node.approval span, .arch-node.approval small { color: #343821; }
.arch-link { align-self: center; height: 1px; background: var(--line-strong); }
.arch-cluster { border-color: var(--structure); }
.arch-cluster div { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 20px; }
.arch-cluster b { padding: 7px; color: var(--muted); background: var(--surface-soft); font: 500 9px/1 "IBM Plex Mono", monospace; }
.architecture-notes { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.architecture-notes article { padding: 24px; border-right: 1px solid var(--line); }
.architecture-notes article:last-child { border-right: 0; }
.architecture-notes span { color: var(--structure); font: 500 10px/1.2 "IBM Plex Mono", monospace; text-transform: uppercase; }
.architecture-notes p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.diagram-library { border-top: 1px solid var(--line); }
.diagram-library summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 24px; cursor: pointer; list-style: none; }
.diagram-library summary::-webkit-details-marker { display: none; }
.diagram-library summary span { font-size: 13px; font-weight: 650; }
.diagram-library summary b { color: var(--signal); font: 500 10px/1.2 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .04em; }
.diagram-library summary:focus-visible { outline: 2px solid var(--signal); outline-offset: -4px; }
.diagram-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.diagram-grid figure { margin: 0; padding: 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.diagram-grid figure:nth-child(2n) { border-right: 0; }
.diagram-grid figure:nth-last-child(-n+2) { border-bottom: 0; }
.diagram-grid a { display: flex; min-height: 220px; align-items: center; padding: 12px; overflow: hidden; background: #fff; border: 1px solid #dedbd3; }
.diagram-grid img { width: 100%; max-height: 300px; object-fit: contain; }
.diagram-grid figcaption { margin-top: 11px; color: var(--muted); font: 500 10px/1.2 "IBM Plex Mono", monospace; text-transform: uppercase; }

.technical-section { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 100px; align-items: center; border-top: 1px solid var(--line); }
.technical-copy > a { display: inline-flex; gap: 12px; margin-top: 30px; padding-bottom: 5px; border-bottom: 1px solid var(--ink); font-weight: 650; }
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--line); }
.tech-grid div { min-height: 130px; display: flex; align-items: center; gap: 14px; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tech-grid div:nth-child(2n) { border-right: 0; }
.tech-grid div:nth-last-child(-n+2) { border-bottom: 0; }
.tech-grid div:last-child { grid-column: 1 / -1; border-right: 0; }
.tech-grid img { width: 36px; height: 36px; object-fit: contain; filter: grayscale(1); }
html[data-theme="dark"] .tech-grid img { filter: grayscale(1) invert(.9); }
.tech-grid span { font-size: 14px; font-weight: 650; }

.governance-section { border-top: 1px solid var(--line); }
.governance-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.governance-grid article { min-height: 330px; display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-right: 0; }
.governance-grid article:last-child { border-right: 1px solid var(--line); }
.governance-number { color: var(--signal); font: 500 54px/1 "IBM Plex Mono", monospace; }
html[data-theme="light"] .governance-number { color: var(--structure); }
.governance-grid h3 { margin: auto 0 0; font-size: 20px; }
.governance-grid p { margin: 14px 0 0; color: var(--muted); font-size: 13px; }

.boundary-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; border-top: 1px solid var(--line); }
.boundary-section ul { margin: 0; padding: 0; list-style: none; }
.boundary-section li { padding: 22px 0; color: var(--muted); border-top: 1px solid var(--line); }
.boundary-section li:last-child { border-bottom: 1px solid var(--line); }
.boundary-section li span { display: block; margin-bottom: 8px; color: var(--ink); font: 500 10px/1 "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .07em; }

.site-footer { padding: 42px 0; border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { display: grid; grid-template-columns: 1fr 1fr auto; gap: 28px; align-items: center; }
.footer-brand { display: grid; grid-template-columns: 34px 1fr; column-gap: 12px; align-items: center; }
.footer-brand img { grid-row: 1 / 3; width: 34px; height: 34px; padding: 6px; background: #080807; border: 1px solid #35322e; }
.footer-brand.aixcel img { background: var(--surface-raised); border-color: var(--line); }
.footer-brand span { font-size: 13px; font-weight: 650; }
.footer-brand small { color: var(--quiet); font-size: 10px; }
.footer-links { display: flex; gap: 18px; color: var(--muted); font-size: 12px; }
.footer-links a:hover { color: var(--ink); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes runtime-pulse { to { opacity: .35; } }

@media (max-width: 1040px) {
  .hero { grid-template-columns: 1fr; gap: 60px; }
  .hero-proof { max-width: 520px; }
  .lab-grid { grid-template-columns: 300px minmax(0, 1fr); }
  .architecture-flow { grid-template-columns: 1fr; gap: 12px; }
  .arch-link { width: 1px; height: 20px; justify-self: center; }
  .technical-section { gap: 50px; }
}

@media (max-width: 820px) {
  .site-header { width: min(100% - 32px, 1280px); }
  .brand-lockup .brand-name:nth-of-type(2), .brand-cross { display: none; }
  .shell { width: min(100% - 32px, 1180px); }
  .hero { min-height: auto; padding: 80px 0 64px; }
  .deal-lab { width: 100%; border-left: 0; border-right: 0; }
  .lab-grid { grid-template-columns: 1fr; }
  .control-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .control-boundary { display: none; }
  .empty-state, .loading-state, .error-state { min-height: 560px; }
  .proof-strip-grid { grid-template-columns: 1fr 1fr; }
  .proof-strip-grid div:nth-child(2) { border-right: 0; }
  .proof-strip-grid div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .architecture-notes { grid-template-columns: 1fr; }
  .architecture-notes article { border-right: 0; border-bottom: 1px solid var(--line); }
  .architecture-notes article:last-child { border-bottom: 0; }
  .diagram-grid { grid-template-columns: 1fr; }
  .diagram-grid figure, .diagram-grid figure:nth-child(2n), .diagram-grid figure:nth-last-child(-n+2) { border-right: 0; border-bottom: 1px solid var(--line); }
  .diagram-grid figure:last-child { border-bottom: 0; }
  .technical-section, .boundary-section { grid-template-columns: 1fr; gap: 50px; }
  .governance-grid { grid-template-columns: 1fr; }
  .governance-grid article { min-height: 250px; border-right: 1px solid var(--line); border-bottom: 0; }
  .governance-grid article:last-child { border-bottom: 1px solid var(--line); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-links { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .site-header { height: 66px; }
  .brand-name { font-size: 12px; }
  .brand-lockup .brand-mark-aixcel { display: none; }
  .status-pill { display: none; }
  .hero h1 { font-size: clamp(48px, 15vw, 70px); }
  .hero-intro { font-size: 16px; }
  .lab-header { align-items: flex-start; padding: 20px 16px; }
  .lab-header h2 { font-size: 23px; }
  .control-panel form { padding: 22px 16px; }
  .run-result { padding: 22px 16px; }
  .result-head { flex-direction: column; }
  .forecast-heading { align-items: flex-start; flex-direction: column; }
  .forecast-pair { grid-template-columns: 1fr; }
  .tension-line { height: 34px; justify-content: center; }
  .tension-line span { width: 1px; height: 100%; }
  .tension-line i:first-child { left: calc(50% - 4px); top: 0; }
  .tension-line i:last-child { right: calc(50% - 4px); bottom: 0; }
  .metric-row { grid-template-columns: 1fr 1fr; }
  .metric-row article:nth-child(2) { border-right: 0; }
  .metric-row article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .metric-row article:nth-child(3) { padding-left: 0; }
  .result-tabs { gap: 18px; overflow-x: auto; }
  .decision-columns { grid-template-columns: 1fr; }
  .evidence-row, .trace-row { grid-template-columns: 1fr; gap: 7px; }
  .approval-actions { flex-direction: column-reverse; }
  .approval-actions button { width: 100%; }
  .proof-strip-grid { grid-template-columns: 1fr; }
  .proof-strip-grid div { min-height: 125px; padding-left: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .proof-strip-grid div:last-child { border-bottom: 0; }
  .system-section, .technical-section, .governance-section, .boundary-section { padding-block: 82px; }
  .architecture-flow { padding: 18px; }
  .tech-grid { grid-template-columns: 1fr; }
  .tech-grid div { min-height: 96px; border-right: 0; }
  .tech-grid div:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
  .tech-grid div:last-child { grid-column: auto; border-bottom: 0; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-column: auto; flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}