/* OtaconsKeep Engineering Portal, technical dashboard layer on site theme */

:root {
 --eng-max: 1280px;
 --eng-sidebar: 220px;
 --eng-panel: #0c1219;
 --eng-ok: var(--signal);
 --eng-warn: var(--warn);
 --eng-bad: var(--danger);
 --eng-muted: var(--cream-faint);
}

.eng-layout {
 display: grid;
 grid-template-columns: var(--eng-sidebar) minmax(0, 1fr);
 gap: 0;
 max-width: var(--eng-max);
 margin: 0 auto;
 min-height: 70vh;
}

.eng-sidebar {
 position: sticky;
 top: 56px;
 align-self: start;
 max-height: calc(100vh - 56px);
 overflow: auto;
 padding: 16px 12px 32px;
 border-right: 1px solid var(--line);
 background: rgba(9, 12, 17, 0.96);
}

.eng-sidebar a {
 display: block;
 padding: 7px 10px;
 margin: 2px 0;
 color: var(--cream-dim);
 text-decoration: none;
 font-size: 0.86rem;
 border-radius: var(--radius);
 border-left: 2px solid transparent;
}

.eng-sidebar a:hover,
.eng-sidebar a[aria-current="true"] {
 color: var(--cream);
 background: var(--surface);
 border-left-color: var(--accent-bright);
}

.eng-main {
 padding: 20px 24px 64px;
 min-width: 0;
}

.eng-hero h1 {
 font-family: 'Bricolage Grotesque', sans-serif;
 text-transform: uppercase;
 font-size: clamp(1.6rem, 4vw, 2.4rem);
 letter-spacing: 0.04em;
 margin: 0 0 6px;
}

.eng-hero .lede {
 color: var(--cream-dim);
 margin: 0 0 18px;
 max-width: 52rem;
}

.eng-lifecycle {
 display: flex;
 flex-wrap: wrap;
 gap: 6px;
 align-items: center;
 margin: 0 0 20px;
 padding: 12px;
 background: var(--eng-panel);
 border: 1px solid var(--line);
 border-radius: var(--radius);
}

.eng-lifecycle button {
 font: 600 0.68rem/1 JetBrains Mono, monospace;
 letter-spacing: 0.06em;
 text-transform: uppercase;
 color: var(--cream-dim);
 background: var(--surface);
 border: 1px solid var(--line-bright);
 padding: 8px 10px;
 cursor: pointer;
 border-radius: var(--radius);
}

.eng-lifecycle button[aria-pressed="true"],
.eng-lifecycle button:hover {
 color: var(--bg);
 background: var(--accent-bright);
 border-color: var(--accent-bright);
}

.eng-lifecycle .arrow {
 color: var(--eng-muted);
 font-size: 0.75rem;
}

.eng-metrics {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
 gap: 10px;
 margin-bottom: 28px;
}

.eng-metric {
 background: var(--surface);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 padding: 12px 12px 10px;
}

.eng-metric .label {
 font-size: 0.7rem;
 letter-spacing: 0.08em;
 text-transform: uppercase;
 color: var(--cream-faint);
 font-family: 'JetBrains Mono', monospace;
}

.eng-metric .value {
 font-size: 1.15rem;
 font-weight: 700;
 margin-top: 6px;
 color: var(--cream);
 word-break: break-word;
}

.eng-metric .value.muted {
 color: var(--cream-dim);
 font-size: 0.92rem;
 font-weight: 500;
}

.eng-toolbar {
 display: flex;
 flex-wrap: wrap;
 gap: 10px;
 align-items: center;
 margin: 0 0 16px;
}

.eng-toolbar input[type="search"],
.eng-toolbar select {
 background: var(--surface);
 border: 1px solid var(--line-bright);
 color: var(--cream);
 padding: 8px 10px;
 border-radius: var(--radius);
 font: 0.9rem Figtree, sans-serif;
 min-width: 160px;
}

.eng-section {
 margin: 0 0 40px;
 scroll-margin-top: 72px;
}

.eng-section > h2 {
 font-size: 1.35rem;
 margin: 0 0 8px;
 letter-spacing: 0.02em;
}

.eng-section > .intro {
 color: var(--cream-dim);
 margin: 0 0 14px;
 font-size: 0.95rem;
}

.eng-card-grid {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
 gap: 10px;
}

.eng-card {
 border: 1px solid var(--line);
 background: var(--surface);
 padding: 14px;
 border-radius: var(--radius);
 cursor: pointer;
 text-align: left;
 color: inherit;
 font: inherit;
 width: 100%;
}

.eng-card:hover {
 border-color: var(--accent);
}

.eng-card h3 {
 font-size: 0.95rem;
 margin: 0 0 6px;
}

.eng-card p {
 margin: 0;
 font-size: 0.85rem;
 color: var(--cream-dim);
}

.eng-table-wrap {
 overflow-x: auto;
 border: 1px solid var(--line);
 border-radius: var(--radius);
 background: var(--eng-panel);
}

.eng-table {
 width: 100%;
 border-collapse: collapse;
 font-size: 0.86rem;
 min-width: 640px;
}

.eng-table th,
.eng-table td {
 padding: 8px 10px;
 border-bottom: 1px solid var(--line);
 text-align: left;
 vertical-align: top;
}

.eng-table th {
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.72rem;
 letter-spacing: 0.05em;
 text-transform: uppercase;
 color: var(--cream-faint);
 background: var(--surface);
 position: sticky;
 top: 0;
}

.eng-table tr:hover td {
 background: rgba(57, 230, 200, 0.04);
}

.eng-id {
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.8rem;
 color: var(--accent-bright);
 background: none;
 border: none;
 padding: 0;
 cursor: pointer;
 text-decoration: underline;
 text-decoration-color: rgba(57, 230, 200, 0.35);
}

.eng-status {
 display: inline-flex;
 align-items: center;
 gap: 6px;
 font-size: 0.78rem;
 font-weight: 600;
}

.eng-status::before {
 content: '';
 width: 7px;
 height: 7px;
 border-radius: 50%;
 background: var(--cream-faint);
}

.eng-status[data-tone="ok"]::before { background: var(--eng-ok); }
.eng-status[data-tone="warn"]::before { background: var(--eng-warn); }
.eng-status[data-tone="bad"]::before { background: var(--eng-bad); }
.eng-status[data-tone="muted"]::before { background: var(--eng-muted); }

.eng-empty {
 padding: 18px;
 border: 1px dashed var(--line-bright);
 color: var(--cream-dim);
 border-radius: var(--radius);
 font-size: 0.92rem;
}

.eng-diagram {
 border: 1px solid var(--line);
 background: #0a0e14;
 border-radius: var(--radius);
 padding: 12px;
 margin: 10px 0 18px;
 overflow: auto;
 max-height: 480px;
 position: relative;
}

.eng-diagram .mermaid {
 display: flex;
 justify-content: center;
}

.eng-diagram-toolbar {
 display: flex;
 gap: 8px;
 margin-bottom: 8px;
}

.eng-diagram-toolbar button {
 font: 600 0.75rem JetBrains Mono, monospace;
 background: var(--surface);
 color: var(--cream);
 border: 1px solid var(--line-bright);
 padding: 6px 10px;
 cursor: pointer;
 border-radius: var(--radius);
}

.eng-vmodel {
 display: grid;
 gap: 8px;
}

.eng-risk-matrix-wrap {
 max-width: 560px;
 margin: 12px 0 8px;
}

.eng-risk-axis-y,
.eng-risk-axis-x {
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.72rem;
 color: var(--cream-faint);
 margin: 4px 0;
}

.eng-risk-matrix {
 display: grid;
 grid-template-columns: 36px repeat(5, minmax(72px, 1fr));
 gap: 4px;
 font-size: 0.68rem;
 font-family: 'JetBrains Mono', monospace;
}

.eng-risk-matrix .cell {
 border: 1px solid rgba(255, 255, 255, 0.12);
 min-height: 64px;
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: center;
 gap: 2px;
 cursor: pointer;
 color: #f4f0e6;
 padding: 4px;
 border-radius: 4px;
 transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.eng-risk-matrix .cell.has:hover {
 transform: translateY(-1px);
 box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
}

.eng-risk-matrix .cell .n {
 font-weight: 700;
 font-size: 0.85rem;
}

.eng-risk-matrix .cell .ids {
 opacity: 0.9;
 font-size: 0.62rem;
 line-height: 1.2;
 text-align: center;
 word-break: break-word;
}

.eng-risk-matrix .hdr {
 color: var(--cream-faint);
 border: none;
 background: transparent;
 cursor: default;
 display: flex;
 align-items: center;
 justify-content: center;
 min-height: 28px;
}

.eng-risk-legend {
 display: flex;
 flex-wrap: wrap;
 gap: 12px;
 margin: 8px 0 4px;
 font-size: 0.78rem;
 color: var(--cream-dim);
}

.eng-risk-legend i {
 display: inline-block;
 width: 12px;
 height: 12px;
 border-radius: 2px;
 margin-right: 6px;
 vertical-align: -1px;
}

.eng-risk-scores {
 display: flex;
 flex-wrap: wrap;
 gap: 8px;
 margin: 8px 0 10px;
}

.eng-risk-scores .score {
 border: 1px solid var(--line-bright);
 border-radius: 4px;
 padding: 4px 8px;
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.72rem;
 color: var(--cream);
}

.eng-risk-scores .score em {
 font-style: normal;
 color: var(--cream-dim);
 margin-left: 4px;
}

.eng-suite-strip {
 display: grid;
 grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
 gap: 8px;
 margin: 10px 0 14px;
}

.eng-suite-strip > div {
 background: var(--eng-panel);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 padding: 10px 12px;
}

.eng-suite-strip .k {
 display: block;
 font-size: 0.68rem;
 color: var(--cream-faint);
 font-family: 'JetBrains Mono', monospace;
 text-transform: uppercase;
 letter-spacing: 0.04em;
}

.eng-suite-strip .v {
 display: block;
 font-size: 1.25rem;
 font-weight: 700;
 color: var(--cream);
 margin-top: 2px;
}

.eng-suite-strip .v.ok { color: #6dcea0; }
.eng-suite-strip .v.warn { color: #e0a83c; }
.eng-suite-strip .v.bad { color: #ef5f6b; }

.eng-badge-analysis {
 display: inline-block;
 font: 600 0.65rem/1 JetBrains Mono, monospace;
 padding: 3px 6px;
 border-radius: 3px;
 background: rgba(57, 230, 200, 0.15);
 color: #39e6c8;
 border: 1px solid rgba(57, 230, 200, 0.35);
}

.eng-badge-ref {
 display: inline-block;
 font: 600 0.65rem/1 JetBrains Mono, monospace;
 padding: 3px 6px;
 border-radius: 3px;
 background: rgba(120, 160, 220, 0.15);
 color: #9bb8e8;
 border: 1px solid rgba(120, 160, 220, 0.35);
}

.eng-callout-ok {
 border: 1px solid rgba(109, 206, 160, 0.35);
 background: rgba(109, 206, 160, 0.08);
 color: var(--cream-dim);
 padding: 10px 12px;
 border-radius: var(--radius);
 margin: 8px 0 14px;
 font-size: 0.88rem;
}

.eng-tornado {
 display: grid;
 gap: 8px;
 margin: 8px 0 12px;
 max-width: 520px;
}

.eng-tornado-row {
 display: grid;
 grid-template-columns: 140px 1fr auto;
 gap: 8px;
 align-items: center;
 font-size: 0.78rem;
 color: var(--cream-dim);
}

.eng-tornado-row .bar {
 position: relative;
 height: 10px;
 background: rgba(255, 255, 255, 0.06);
 border-radius: 4px;
 overflow: hidden;
}

.eng-tornado-row .bar i {
 position: absolute;
 top: 0;
 height: 100%;
 background: linear-gradient(90deg, #39e6c8, #e0a83c);
 border-radius: 4px;
 transform: translateX(-50%);
}

.eng-tornado-row .nums {
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.7rem;
}

.eng-diagram-bdd,
.eng-diagram-ibd {
 max-height: 640px;
 border-color: rgba(57, 230, 200, 0.25);
}

.eng-trace-graph {
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.85rem;
 padding: 14px;
 background: var(--eng-panel);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 line-height: 1.7;
}

.eng-trace-graph .node {
 color: var(--accent-bright);
}

.eng-drawer {
 position: fixed;
 top: 0;
 right: 0;
 width: min(440px, 100vw);
 height: 100vh;
 background: var(--bg-elevated);
 border-left: 1px solid var(--line-bright);
 z-index: 40;
 transform: translateX(100%);
 transition: transform 0.2s ease;
 overflow: auto;
 padding: 20px 18px 40px;
 box-shadow: -12px 0 40px rgba(0,0,0,0.45);
}

.eng-drawer.open {
 transform: translateX(0);
}

.eng-drawer h2 {
 font-size: 1.1rem;
 margin: 0 0 4px;
 font-family: 'JetBrains Mono', monospace;
}

.eng-drawer .close {
 float: right;
 background: transparent;
 border: 1px solid var(--line);
 color: var(--cream);
 padding: 4px 10px;
 cursor: pointer;
}

.eng-drawer dl {
 display: grid;
 grid-template-columns: 120px 1fr;
 gap: 8px 10px;
 margin: 16px 0;
 font-size: 0.88rem;
}

.eng-drawer dt {
 color: var(--cream-faint);
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.72rem;
 text-transform: uppercase;
}

.eng-drawer dd {
 margin: 0;
 color: var(--cream-dim);
}

.eng-backdrop {
 position: fixed;
 inset: 0;
 background: rgba(0,0,0,0.45);
 z-index: 35;
 opacity: 0;
 pointer-events: none;
 transition: opacity 0.2s;
}

.eng-backdrop.open {
 opacity: 1;
 pointer-events: auto;
}

.eng-mobile-cards {
 display: none;
}

.eng-coverage {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
 gap: 8px;
 margin: 12px 0;
}

.eng-coverage .bar {
 height: 6px;
 background: var(--line);
 border-radius: 3px;
 margin-top: 6px;
 overflow: hidden;
}

.eng-coverage .bar > span {
 display: block;
 height: 100%;
 background: var(--accent);
}

.eng-eq {
 font-family: 'JetBrains Mono', monospace;
 font-size: 0.82rem;
 background: #0a0e14;
 border: 1px solid var(--line);
 padding: 12px;
 border-radius: var(--radius);
 overflow-x: auto;
 color: var(--accent-bright);
 white-space: pre-wrap;
}

.eng-radar {
 width: 100%;
 max-width: 360px;
 height: 280px;
}

.eng-export {
 font: 600 0.75rem JetBrains Mono, monospace;
 background: transparent;
 color: var(--accent-bright);
 border: 1px solid var(--accent-dim);
 padding: 6px 10px;
 cursor: pointer;
 border-radius: var(--radius);
}

@media (max-width: 860px) {
 .eng-layout {
 grid-template-columns: 1fr;
 }
 .eng-sidebar {
 position: static;
 max-height: none;
 border-right: none;
 border-bottom: 1px solid var(--line);
 display: flex;
 flex-wrap: wrap;
 gap: 4px;
 padding: 12px;
 }
 .eng-sidebar a {
 border-left: none;
 border-bottom: 2px solid transparent;
 padding: 6px 8px;
 }
 .eng-sidebar a[aria-current="true"] {
 border-bottom-color: var(--accent-bright);
 }
 .eng-main { padding: 16px 14px 48px; }
 .eng-table { min-width: 520px; }
 .eng-mobile-cards.show {
 display: grid;
 gap: 8px;
 }
}

@media (max-width: 560px) {
 .eng-lifecycle button { font-size: 0.62rem; padding: 6px 7px; }
}

/* Math / MOCK analysis / honesty chrome */
.eng-badge-mock {
 display: inline-block;
 font: 700 0.65rem JetBrains Mono, monospace;
 letter-spacing: 0.06em;
 text-transform: uppercase;
 color: #1a1208;
 background: #f0b429;
 border: 1px solid #c9921a;
 padding: 2px 7px;
 border-radius: 2px;
 vertical-align: middle;
 margin-right: 6px;
}

.eng-callout-amber {
 border: 1px solid rgba(240, 180, 41, 0.45);
 background: rgba(240, 180, 41, 0.08);
 color: var(--cream-dim);
 padding: 10px 14px;
 border-radius: var(--radius);
 font-size: 0.88rem;
 margin: 0 0 16px;
}

.eng-mock-card {
 border: 1px solid var(--line);
 background: #0a0e14;
 padding: 14px 16px;
 border-radius: var(--radius);
 margin: 0 0 14px;
}

.eng-katex {
 overflow-x: auto;
 margin: 10px 0 16px;
 padding: 12px 14px;
 background: #0a0e14;
 border: 1px solid var(--line);
 border-radius: var(--radius);
 color: var(--accent-bright);
}

.eng-katex .katex-display {
 margin: 0;
}

.eng-heat {
 display: inline-block;
 max-width: 100%;
 overflow-x: auto;
 margin: 8px 0 12px;
 border: 1px solid var(--line);
 border-radius: var(--radius);
 padding: 8px;
 background: #0a0e14;
}

.eng-heat-row {
 display: flex;
 align-items: stretch;
}

.eng-heat-lab {
 display: flex;
 align-items: center;
 justify-content: flex-end;
 min-width: 72px;
 max-width: 96px;
 padding: 4px 6px;
 font: 500 0.62rem JetBrains Mono, monospace;
 color: var(--cream-faint);
 word-break: break-all;
}

.eng-heat-row > .eng-heat-lab:first-child {
 justify-content: flex-start;
}

.eng-heat-cell {
 display: flex;
 align-items: center;
 justify-content: center;
 min-width: 48px;
 height: 36px;
 margin: 1px;
 font: 600 0.65rem JetBrains Mono, monospace;
 color: var(--cream);
 border-radius: 2px;
}

.eng-risk-card {
 border: 1px solid var(--line);
 background: #0a0e14;
 padding: 14px 16px;
 border-radius: var(--radius);
 margin: 12px 0;
}

.eng-risk-card h3 {
 margin: 0 0 8px;
 font-size: 1rem;
 color: var(--accent-bright);
}

.eng-diagram-caption {
 font-size: 0.8rem;
 color: var(--cream-faint);
 margin: 6px 0 0;
}

.eng-badge-measured {
 display: inline-block;
 font: 700 0.65rem JetBrains Mono, monospace;
 letter-spacing: 0.06em;
 text-transform: uppercase;
 color: #061410;
 background: #39e6c8;
 border: 1px solid #2bb89e;
 padding: 2px 7px;
 border-radius: 2px;
 vertical-align: middle;
 margin-right: 6px;
}

.eng-math-toc {
 columns: 2;
 color: var(--cream-dim);
 font-size: 0.88rem;
 margin: 0 0 20px;
 padding-left: 1.2rem;
}

.eng-math-toc a {
 color: var(--accent-bright);
 text-decoration: none;
}

.eng-math-toc a:hover { text-decoration: underline; }

.eng-math-chapter {
 border-top: 1px solid var(--line);
 padding: 18px 0 8px;
 margin: 0 0 8px;
}

.eng-math-chapter h3 {
 margin: 0 0 10px;
 color: var(--accent-bright);
 font-size: 1.15rem;
}

.eng-math-chapter h4 {
 margin: 14px 0 6px;
 font: 700 0.72rem JetBrains Mono, monospace;
 letter-spacing: 0.06em;
 text-transform: uppercase;
 color: var(--cream-faint);
}

.eng-math-vars {
 color: var(--cream-dim);
 font-size: 0.9rem;
 margin: 0 0 8px;
 padding-left: 1.1rem;
}

.eng-math-justify {
 border: 1px solid var(--line);
 background: #0a0e14;
 padding: 12px 14px;
 border-radius: var(--radius);
 margin: 0 0 16px;
 color: var(--cream-dim);
 font-size: 0.9rem;
}

.eng-math-note {
 margin: 0 0 18px;
 padding: 12px 16px;
 border-left: 3px solid var(--accent);
 color: var(--cream-dim);
 font-size: 0.92rem;
 line-height: 1.55;
}

.eng-math-mode {
 margin: 0 0 18px;
 padding: 14px 16px;
 border: 1px solid var(--line);
 border-radius: 4px;
 background: #0a0e14;
}

.eng-math-mode-label {
 margin: 0 0 10px;
 font: 700 0.72rem JetBrains Mono, monospace;
 letter-spacing: 0.06em;
 text-transform: uppercase;
 color: var(--accent-bright);
}

.eng-math-mode-btns {
 display: flex;
 flex-wrap: wrap;
 gap: 8px;
}

.eng-math-mode-btn {
 font: 600 0.85rem Figtree, sans-serif;
 padding: 10px 14px;
 cursor: pointer;
 border-radius: 3px;
 border: 1px solid var(--line);
 background: transparent;
 color: var(--cream-dim);
}

.eng-math-mode-btn:hover {
 border-color: var(--accent-dim);
 color: var(--cream);
}

.eng-math-mode-btn.active {
 border-color: var(--accent-bright);
 color: #061410;
 background: var(--accent);
}

.eng-math-choose {
 margin: 0 0 12px;
}

.eng-math-easy {
  margin: 14px 0 22px;
  padding: 0;
  border: 2px solid rgba(57, 230, 200, 0.55);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(57, 230, 200, 0.14), rgba(10, 14, 20, 0.95) 28%);
  box-shadow: 0 0 0 1px rgba(57, 230, 200, 0.12), 0 12px 40px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.eng-math-easy-banner {
  margin: 0;
  padding: 12px 16px;
  font: 800 0.95rem Bricolage Grotesque, sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #04130f;
  background: linear-gradient(90deg, var(--accent-bright), #7dffd8);
}

.eng-math-easy-lead {
  margin: 0;
  padding: 16px 18px 8px;
  font-size: 1.12rem;
  line-height: 1.55;
  color: var(--cream);
}

.eng-math-easy-lead strong {
  font-weight: 800;
  color: #f2fbf8;
}

.eng-math-q {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  margin: 0 0 14px;
  padding: 12px 14px;
  border-radius: 4px;
  border: 1px solid rgba(240, 180, 41, 0.45);
  background: rgba(240, 180, 41, 0.1);
  color: var(--cream);
  font: 700 1.15rem Bricolage Grotesque, sans-serif;
  line-height: 1.35;
}

.eng-math-q-kicker {
  font: 800 0.68rem JetBrains Mono, monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #1a1208;
  background: #f0b429;
  padding: 3px 8px;
  border-radius: 2px;
}

.eng-math-eq-label {
  margin: 14px 0 8px !important;
  font: 800 0.85rem JetBrains Mono, monospace !important;
  letter-spacing: 0.08em !important;
  text-transform: uppercase !important;
  color: var(--accent-bright) !important;
}

.eng-math-block {
  margin: 10px 14px 14px;
  padding: 14px 16px 16px;
  border-radius: 5px;
  border: 1px solid var(--line);
  background: #0a0e14;
}

.eng-math-block[data-tone="vars"] {
  border-color: rgba(57, 230, 200, 0.4);
  background: rgba(57, 230, 200, 0.06);
}

.eng-math-block[data-tone="agent"] {
  border-color: rgba(167, 139, 250, 0.45);
  border-left: 5px solid #a78bfa;
  background: rgba(167, 139, 250, 0.08);
}

.eng-math-block[data-tone="logic"] {
  border-color: rgba(240, 180, 41, 0.5);
  border-left: 5px solid #f0b429;
  background: rgba(240, 180, 41, 0.09);
}

.eng-math-block[data-tone="why"] {
  border-color: rgba(67, 217, 138, 0.45);
  border-left: 5px solid var(--signal);
  background: rgba(67, 217, 138, 0.08);
}

.eng-math-block[data-tone="stack"] {
  border-color: rgba(239, 95, 107, 0.4);
  border-left: 5px solid #ef5f6b;
  background: rgba(239, 95, 107, 0.07);
}

.eng-math-block[data-tone="link"] {
  border-color: rgba(148, 163, 184, 0.4);
  border-left: 5px solid #94a3b8;
}

.eng-math-h {
  margin: 0 0 12px;
  font: 800 1.15rem Bricolage Grotesque, sans-serif;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--cream);
}

.eng-math-block[data-tone="vars"] .eng-math-h { color: var(--accent-bright); }
.eng-math-block[data-tone="agent"] .eng-math-h { color: #c4b5fd; }
.eng-math-block[data-tone="logic"] .eng-math-h { color: #f0b429; }
.eng-math-block[data-tone="why"] .eng-math-h { color: #43d98a; }
.eng-math-block[data-tone="stack"] .eng-math-h { color: #ef5f6b; }
.eng-math-block[data-tone="link"] .eng-math-h { color: #94a3b8; }

.eng-math-body {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--cream);
  font-weight: 600;
}

.eng-math-vargrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.eng-math-varcard-graphic {
  display: flex !important;
  flex-direction: column;
  align-items: center;
  text-align: center;
  grid-template-columns: none !important;
  gap: 10px;
  padding: 16px 12px 14px;
  min-height: 148px;
}

.eng-math-varicon-lg {
  width: 64px !important;
  height: 64px !important;
  border-radius: 16px !important;
}

.eng-math-varicon-lg svg {
  width: 32px !important;
  height: 32px !important;
}

.eng-math-varplain {
  font: 800 0.98rem Bricolage Grotesque, sans-serif;
  color: var(--cream);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.eng-math-varcard-graphic .eng-math-defvar {
  font-size: 0.82rem;
  line-height: 1.35;
  color: var(--cream-dim);
  font-weight: 500;
}

.eng-math-varcard-graphic .eng-math-varbody {
  width: 100%;
}

.eng-math-varcard {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #071016;
  min-height: 88px;
}

.eng-math-varcard[data-tone="cyan"] {
  border-color: rgba(57, 230, 200, 0.45);
  box-shadow: inset 0 0 0 1px rgba(57, 230, 200, 0.08);
}
.eng-math-varcard[data-tone="amber"] {
  border-color: rgba(240, 180, 41, 0.45);
}
.eng-math-varcard[data-tone="violet"] {
  border-color: rgba(167, 139, 250, 0.45);
}
.eng-math-varcard[data-tone="green"] {
  border-color: rgba(67, 217, 138, 0.45);
}
.eng-math-varcard[data-tone="rose"] {
  border-color: rgba(239, 95, 107, 0.45);
}

.eng-math-varicon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #04130f;
  background: var(--accent-bright);
}

.eng-math-varcard[data-tone="amber"] .eng-math-varicon { background: #f0b429; }
.eng-math-varcard[data-tone="violet"] .eng-math-varicon { background: #a78bfa; }
.eng-math-varcard[data-tone="green"] .eng-math-varicon { background: #43d98a; }
.eng-math-varcard[data-tone="rose"] .eng-math-varicon { background: #ef5f6b; }

.eng-math-varicon svg {
  width: 22px;
  height: 22px;
  display: block;
}

.eng-math-varsym {
  font: 700 0.95rem JetBrains Mono, monospace;
  color: var(--accent-bright);
  margin-bottom: 4px;
  word-break: break-word;
}

.eng-math-varcard[data-tone="amber"] .eng-math-varsym { color: #f0b429; }
.eng-math-varcard[data-tone="violet"] .eng-math-varsym { color: #c4b5fd; }
.eng-math-varcard[data-tone="green"] .eng-math-varsym { color: #43d98a; }
.eng-math-varcard[data-tone="rose"] .eng-math-varsym { color: #ef5f6b; }

.eng-math-defvar {
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--cream-dim);
  font-weight: 500;
}

.eng-math-chiprow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.eng-math-chiprow li {
  font: 600 0.78rem JetBrains Mono, monospace;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(67, 217, 138, 0.4);
  color: #43d98a;
  background: rgba(67, 217, 138, 0.08);
}

@media (max-width: 640px) {
  .eng-math-vargrid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
 .eng-math-toc { columns: 1; }
 .eng-math-mode-btn { width: 100%; }
}

/* Overview status board (PLM / SE dashboard, not SOW) */
.eng-ov-tagline {
 font: 700 0.72rem JetBrains Mono, monospace;
 letter-spacing: 0.1em;
 text-transform: uppercase;
 color: var(--accent-bright);
 margin: 0 0 8px;
}

.eng-ov-strip {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(108px, 1fr));
 gap: 8px;
 margin: 12px 0 16px;
}

.eng-ov-chip {
 display: flex;
 flex-direction: column;
 gap: 2px;
 padding: 10px 10px 8px;
 border-radius: 4px;
 border: 1px solid var(--line);
 background: #0a0e14;
 text-decoration: none;
 color: inherit;
 border-top: 3px solid var(--eng-muted);
}

.eng-ov-chip[data-tone="ok"] { border-top-color: var(--eng-ok); }
.eng-ov-chip[data-tone="warn"] { border-top-color: var(--eng-warn); }
.eng-ov-chip[data-tone="bad"] { border-top-color: var(--eng-bad); }

.eng-ov-chip:hover { border-color: var(--accent-dim); }

.eng-ov-chip-val {
 font: 800 1.35rem Bricolage Grotesque, sans-serif;
 color: var(--cream);
 line-height: 1;
}

.eng-ov-chip-lab {
 font: 500 0.65rem JetBrains Mono, monospace;
 color: var(--cream-faint);
 letter-spacing: 0.02em;
}

.eng-ov-jump {
 display: flex;
 flex-wrap: wrap;
 gap: 8px;
 margin: 0 0 18px;
}

.eng-ov-jump-btn {
 font: 600 0.75rem JetBrains Mono, monospace;
 text-decoration: none;
 padding: 6px 10px;
 border-radius: 2px;
 border: 1px solid var(--line);
 color: var(--cream);
}

.eng-ov-jump-btn[data-tone="cyan"] { border-color: rgba(57,230,200,.45); color: var(--accent-bright); }
.eng-ov-jump-btn[data-tone="amber"] { border-color: rgba(240,180,41,.5); color: #f0b429; }
.eng-ov-jump-btn[data-tone="violet"] { border-color: rgba(167,139,250,.5); color: #c4b5fd; }

.eng-ov-grid-3 {
 display: grid;
 grid-template-columns: repeat(3, minmax(0, 1fr));
 gap: 10px;
 margin-bottom: 18px;
}

.eng-ov-grid-2 {
 display: grid;
 grid-template-columns: repeat(2, minmax(0, 1fr));
 gap: 12px;
 margin-bottom: 12px;
}

.eng-ov-panel {
 background: #0a0e14;
 border: 1px solid var(--line);
 border-radius: 4px;
 padding: 12px 14px;
}

.eng-ov-panel h3 {
 margin: 0 0 8px;
 font: 700 0.72rem JetBrains Mono, monospace;
 letter-spacing: 0.06em;
 text-transform: uppercase;
 color: var(--accent-bright);
}

.eng-ov-panel p,
.eng-ov-panel li {
 color: var(--cream-dim);
 font-size: 0.88rem;
 line-height: 1.5;
 margin: 0 0 8px;
}

.eng-ov-panel.assume { border-left: 3px solid var(--eng-warn); }
.eng-ov-panel.constrain { border-left: 3px solid var(--eng-bad); }

.eng-ov-h {
 margin: 20px 0 10px;
 font-size: 1rem;
 color: var(--cream);
}

.eng-ov-sub {
 font-weight: 400;
 color: var(--cream-faint);
 font-size: 0.8rem;
}

.eng-lane {
 display: inline-block;
 font: 700 0.62rem JetBrains Mono, monospace;
 letter-spacing: 0.05em;
 text-transform: uppercase;
 padding: 2px 6px;
 border-radius: 2px;
 margin-right: 4px;
}

.eng-lane.cyan { background: rgba(57,230,200,.18); color: var(--accent-bright); }
.eng-lane.amber { background: rgba(240,180,41,.18); color: #f0b429; }
.eng-lane.violet { background: rgba(167,139,250,.18); color: #c4b5fd; }
.eng-lane.slate { background: rgba(148,163,184,.15); color: #94a3b8; }

.eng-ov-products {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
 gap: 10px;
 margin-bottom: 8px;
}

.eng-ov-product {
 background: #0a0e14;
 border: 1px solid var(--line);
 border-radius: 4px;
 padding: 12px;
 border-top: 3px solid var(--accent);
}

.eng-ov-product[data-color="amber"] { border-top-color: #f0b429; }
.eng-ov-product[data-color="violet"] { border-top-color: #a78bfa; }
.eng-ov-product[data-color="slate"] { border-top-color: #64748b; }

.eng-ov-product header {
 display: flex;
 flex-wrap: wrap;
 gap: 6px;
 align-items: center;
 margin-bottom: 8px;
}

.eng-ov-prod-name {
 font-weight: 700;
 color: var(--cream);
 flex: 1;
}

.eng-ov-prod-meta { margin-bottom: 8px; }

.eng-ov-product p {
 margin: 0 0 8px;
 color: var(--cream-dim);
 font-size: 0.84rem;
 line-height: 1.45;
}

.eng-ov-product a {
 font: 600 0.75rem JetBrains Mono, monospace;
 color: var(--accent-bright);
 text-decoration: none;
}

.eng-ov-evid {
 font: 600 0.62rem JetBrains Mono, monospace;
 color: var(--cream-faint);
}

.eng-rag {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-width: 52px;
 font: 700 0.62rem JetBrains Mono, monospace;
 letter-spacing: 0.04em;
 padding: 3px 6px;
 border-radius: 2px;
}

.eng-rag[data-tone="ok"] { background: rgba(57,230,200,.2); color: var(--accent-bright); }
.eng-rag[data-tone="warn"] { background: rgba(240,180,41,.2); color: #f0b429; }
.eng-rag[data-tone="bad"] { background: rgba(239,95,107,.2); color: #ef5f6b; }
.eng-rag[data-tone="muted"] { background: rgba(148,163,184,.15); color: #94a3b8; }

.eng-ov-legend {
 display: flex;
 flex-wrap: wrap;
 gap: 12px;
 margin: 0 0 10px;
 font-size: 0.8rem;
 color: var(--cream-dim);
}

.eng-ov-matrix-cell { text-align: center; }

.eng-ov-caplist {
 list-style: none;
 margin: 0;
 padding: 0;
}

.eng-ov-caplist li {
 display: flex;
 flex-wrap: wrap;
 gap: 8px;
 align-items: center;
 padding: 8px 10px;
 margin: 0 0 6px;
 background: #0a0e14;
 border: 1px solid var(--line);
 border-radius: 4px;
 color: var(--cream-dim);
 font-size: 0.88rem;
}

.eng-ov-scope {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 10px;
}

.eng-ov-scope-col {
 padding: 12px 14px;
 border-radius: 4px;
 border: 1px solid var(--line);
 background: #0a0e14;
}

.eng-ov-scope-col.in { border-top: 3px solid var(--eng-ok); }
.eng-ov-scope-col.out { border-top: 3px solid var(--eng-muted); }

.eng-ov-scope-col h4 {
 margin: 0 0 8px;
 font: 700 0.72rem JetBrains Mono, monospace;
 letter-spacing: 0.05em;
 text-transform: uppercase;
 color: var(--cream);
}

.eng-ov-scope-col ul {
 margin: 0;
 padding-left: 1.1rem;
 color: var(--cream-dim);
 font-size: 0.86rem;
}

.eng-ov-scope-col li { margin: 0.35rem 0; }

.eng-ov-ext {
 display: flex;
 flex-wrap: wrap;
 gap: 8px;
 margin-bottom: 8px;
}

.eng-ov-ext-chip {
 display: flex;
 flex-direction: column;
 gap: 2px;
 min-width: 140px;
 padding: 8px 10px;
 border-radius: 4px;
 border: 1px solid var(--line);
 background: #0a0e14;
 font-size: 0.8rem;
}

.eng-ov-ext-chip[data-tier="core"] { border-left: 3px solid var(--accent-bright); }
.eng-ov-ext-chip[data-tier="optional"] { border-left: 3px solid #64748b; }
.eng-ov-ext-chip[data-tier="reference"] { border-left: 3px solid #a78bfa; }

.eng-ov-ext-chip strong { color: var(--cream); }
.eng-ov-ext-chip span { color: var(--cream-faint); }

.eng-ov-context {
 display: flex;
 flex-wrap: wrap;
 gap: 6px;
}

.eng-ov-node {
 font: 600 0.72rem JetBrains Mono, monospace;
 padding: 5px 8px;
 border-radius: 2px;
 border: 1px solid var(--line);
 color: var(--cream-dim);
}

.eng-ov-node[data-kind="actor"] { border-color: rgba(57,230,200,.4); color: var(--accent-bright); }
.eng-ov-node[data-kind="system"] { border-color: rgba(240,180,41,.45); color: #f0b429; }
.eng-ov-node[data-kind="hardware"] { border-color: rgba(167,139,250,.45); color: #c4b5fd; }
.eng-ov-node[data-kind="external"] { border-color: rgba(148,163,184,.4); color: #94a3b8; }

@media (max-width: 900px) {
 .eng-ov-grid-3,
 .eng-ov-grid-2,
 .eng-ov-scope { grid-template-columns: 1fr; }
}

.eng-math-flow {
  margin: 0 0 14px;
  padding-left: 1.2rem;
  line-height: 1.55;
}

.eng-math-flow li { margin: 0.45rem 0; }

/* MBSE requirements table */
.eng-req-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 0 0 12px;
}

.eng-req-level {
  display: inline-block;
  font: 800 0.72rem JetBrains Mono, monospace;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 2px;
}

.eng-req-level[data-level="1"] {
  color: #04130f;
  background: var(--accent-bright);
}

.eng-req-level[data-level="2"] {
  color: #1a1208;
  background: #f0b429;
}

.eng-req-level[data-level="3"] {
  color: #1a1020;
  background: #c4b5fd;
}

.eng-req-table {
  min-width: 1400px;
}

.eng-req-shall {
  min-width: 280px;
  max-width: 420px;
  font-weight: 600;
  color: var(--cream);
  line-height: 1.4;
}

.eng-req-approach,
.eng-req-rationale {
  min-width: 180px;
  max-width: 280px;
  font-size: 0.8rem;
  color: var(--cream-dim);
  line-height: 1.35;
}

.eng-risk-lvl {
  font: 700 0.72rem JetBrains Mono, monospace;
  padding: 2px 6px;
  border-radius: 2px;
}

.eng-risk-lvl[data-lvl="High"],
.eng-risk-lvl[data-lvl="Critical"] {
  color: #ef5f6b;
  background: rgba(239, 95, 107, 0.15);
}

.eng-risk-lvl[data-lvl="Medium"] {
  color: #f0b429;
  background: rgba(240, 180, 41, 0.15);
}

.eng-risk-lvl[data-lvl="Low"],
.eng-risk-lvl[data-lvl="Negligible"] {
  color: #43d98a;
  background: rgba(67, 217, 138, 0.12);
}

.eng-risk-lvl[data-lvl="None"] {
  color: var(--cream-faint);
}