/* ARC × SHURIQ — Editorial Design System
 * Background: #FAF8F5 — white editorial. No dark mode.
 * Typography: IBM Plex Sans / Serif / Mono via Google Fonts (loaded in HTML).
 */

:root {
  --bg: #FAF8F5;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --border: #e0d8c8;
  --cobalt: #1B3A8C;
  --cobalt-soft: #2a4ea3;
  --tan: #C5A472;
  --tan-soft: #d4ba8c;
  --critical: #B33C2E;
  --paper: #ffffff;
  --shadow: 0 1px 2px rgba(26, 26, 26, 0.04), 0 4px 16px rgba(26, 26, 26, 0.04);
  --max: 1180px;
  --measure: 68ch;
  --serif: 'IBM Plex Serif', Georgia, serif;
  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; height: auto; display: block; }

a {
  color: var(--cobalt);
  text-decoration: none;
  border-bottom: 1px solid rgba(27, 58, 140, 0.25);
  transition: border-color 0.2s ease, color 0.2s ease;
}
a:hover { border-bottom-color: var(--cobalt); }

/* Headings — serif display */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.012em;
  color: var(--ink);
  margin: 0 0 0.4em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); font-weight: 500; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-top: 2.4em; }
h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); margin-top: 2em; }
h4 { font-size: 1.05rem; font-family: var(--sans); font-weight: 600; letter-spacing: 0.005em; }

/* Brand wordmark inside serif headings — IBM Plex Sans */
.brand {
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0.005em;
}

/* Layout */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

.measure {
  max-width: var(--measure);
}

/* Top bar */
.topbar {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(250, 248, 245, 0.92);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: var(--max);
  margin: 0 auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.topbar a {
  color: var(--muted);
  border: none;
}
.topbar a:hover { color: var(--cobalt); }
.topbar-meta { display: flex; gap: 28px; align-items: center; }
.topbar-meta .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cobalt); display: inline-block; margin-right: 8px;
  vertical-align: middle;
}

/* Hero */
.hero {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--border);
}
.hero .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cobalt);
  margin-bottom: 18px;
}
.hero h1 {
  max-width: 18ch;
  margin-bottom: 0.6em;
}
.hero .subhead {
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.5;
  font-family: var(--sans);
}
.hero-meta {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}
.hero-meta .label {
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 6px;
}
.hero-meta .value {
  font-size: 0.98rem;
  color: var(--ink);
  font-weight: 500;
}

/* Section */
section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }
.section-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 14px;
}
.section-eyebrow .num {
  color: var(--cobalt);
  font-weight: 600;
}

/* Pull quote */
.pull-quote {
  border-left: 3px solid var(--cobalt);
  padding: 8px 0 8px 28px;
  margin: 32px 0 32px;
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  line-height: 1.4;
  color: var(--ink);
  font-style: italic;
  max-width: 32ch;
}
.pull-quote .source {
  display: block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-style: normal;
}

p { max-width: var(--measure); margin: 0 0 1.05em; }

/* Methodology grid */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.method-card {
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 28px;
  border-radius: 4px;
  position: relative;
}
.method-card .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cobalt);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: block;
}
.method-card h4 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  letter-spacing: 0;
}
.method-card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

/* Output layers — numbered list with rule */
.layers {
  margin-top: 36px;
  border-top: 1px solid var(--border);
}
.layer {
  display: grid;
  grid-template-columns: 60px 1fr 1.4fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}
.layer .n {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cobalt);
  letter-spacing: 0.08em;
}
.layer .name {
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--ink);
}
.layer .what {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Two-column */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 36px;
}
@media (max-width: 760px) { .two-col { grid-template-columns: 1fr; gap: 32px; } }

.col-card h3 {
  margin-top: 0;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}
.col-card .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cobalt);
  background: rgba(27, 58, 140, 0.06);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 10px;
}
.col-card ul {
  padding-left: 18px;
  color: var(--ink);
  font-size: 0.97rem;
  line-height: 1.65;
}
.col-card ul li { margin-bottom: 8px; }

/* Deliverable rows */
.deliverables {
  margin-top: 36px;
  border-top: 1px solid var(--border);
}
.deliv-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.6fr;
  gap: 28px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
@media (max-width: 760px) { .deliv-row { grid-template-columns: 1fr; gap: 8px; } }
.deliv-row .name { font-family: var(--serif); font-size: 1.1rem; color: var(--ink); }
.deliv-row .fmt {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cobalt);
  align-self: center;
}
.deliv-row .role { color: var(--muted); font-size: 0.95rem; }

/* Benefits — card grid */
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 36px;
}
.benefit-card {
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 26px;
  border-radius: 4px;
  border-top: 3px solid var(--cobalt);
}
.benefit-card h4 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: -0.005em;
}
.benefit-card p { margin: 0; color: var(--muted); font-size: 0.94rem; }

/* Commercial table */
.commercial {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media (max-width: 760px) { .commercial { grid-template-columns: 1fr; } }
.tier {
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: 4px;
}
.tier-1 { border-left: 4px solid var(--cobalt); }
.tier-2 { border-left: 4px solid var(--tan); }
.tier .label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 8px;
}
.tier .price {
  font-family: var(--serif);
  font-size: 2.3rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
  margin: 6px 0 6px;
}
.tier .price .unit {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin-left: 6px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.tier .scope {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}
.tier .anchor {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Timeline */
.timeline {
  margin-top: 40px;
}
.timeline-row {
  display: grid;
  grid-template-columns: 120px 80px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}
@media (max-width: 720px) { .timeline-row { grid-template-columns: 90px 1fr; }
  .timeline-row .week { grid-column: 1 / 2; }
  .timeline-row .phase { grid-column: 2 / 3; }
  .timeline-row .activity { grid-column: 1 / 3; }
}
.timeline-row .week {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cobalt);
}
.timeline-row .phase {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
}
.timeline-row .activity { color: var(--muted); font-size: 0.95rem; line-height: 1.55; }

/* Success two col */
.success-grid {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
@media (max-width: 760px) { .success-grid { grid-template-columns: 1fr; gap: 28px; } }
.success-grid h3 {
  margin-top: 0;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.success-grid h3::before {
  content: "";
  display: inline-block;
  width: 28px; height: 1px;
  background: var(--cobalt);
}
.success-grid ul {
  padding-left: 18px;
  font-size: 0.97rem;
  line-height: 1.65;
  color: var(--ink);
}
.success-grid ul li { margin-bottom: 10px; }

/* Viz hub link card */
.viz-cta {
  margin-top: 40px;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  align-items: center;
}
@media (max-width: 760px) { .viz-cta { grid-template-columns: 1fr; } }
.viz-cta h3 { margin-top: 0; }
.viz-cta .cta-link {
  display: inline-block;
  margin-top: 20px;
  background: var(--cobalt);
  color: white;
  padding: 12px 24px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
}
.viz-cta .cta-link:hover { background: var(--cobalt-soft); }
.viz-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.viz-thumb {
  aspect-ratio: 1;
  background: linear-gradient(135deg, rgba(27, 58, 140, 0.08), rgba(197, 164, 114, 0.08));
  border: 1px solid var(--border);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Companion Artifacts section */
#artifacts { padding: 100px 0; border-top: 1px solid var(--border); background: var(--paper); }
.artifact-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 40px;
  margin-top: 48px;
}
.artifact-card-wide { max-width: 720px; }
.artifact-card h3 {
  margin: 8px 0 16px;
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.25;
}
.artifact-card h3 .brand { font-family: var(--sans); font-weight: 600; letter-spacing: 0.02em; }
.artifact-card p {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  margin: 0 0 20px;
}
.artifact-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cobalt);
  margin-bottom: 4px;
}
.artifact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  border-top: 1px solid var(--border);
}
.artifact-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.artifact-list li a {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--cobalt);
  text-decoration: none;
}
.artifact-list li a:hover { text-decoration: underline; }
.artifact-list li a .brand { font-family: var(--sans); font-weight: 600; }
.graph-name {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.graph-name code {
  font-family: var(--mono);
  font-size: 12px;
  background: rgba(27, 58, 140, 0.06);
  padding: 2px 8px;
  border-radius: 3px;
  color: var(--cobalt);
}
.artifact-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.artifact-footnote {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  margin: 0;
}
.artifact-card .cta-link {
  display: inline-block;
  background: var(--cobalt);
  color: white;
  padding: 10px 20px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}
.artifact-card .cta-link:hover { background: var(--cobalt-soft); }

/* Footer */
footer {
  padding: 60px 0 80px;
  border-top: 1px solid var(--border);
}
footer .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
@media (max-width: 600px) { footer .container { grid-template-columns: 1fr; } }
footer .label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
  margin-bottom: 8px;
  font-size: 11px;
}
footer p { margin: 0 0 6px; max-width: none; }

/* Fade-in scroll animation */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Viz hub specifics */
.viz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 40px;
}
.viz-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border-bottom: none;
  display: block;
  color: var(--ink);
}
.viz-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.viz-card .preview {
  height: 160px;
  background: linear-gradient(135deg, rgba(27, 58, 140, 0.06), rgba(197, 164, 114, 0.08));
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.viz-card .preview svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.viz-card .body { padding: 22px 24px 26px; }
.viz-card .num {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--cobalt);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.viz-card h3 {
  margin: 6px 0 8px;
  font-size: 1.15rem;
  font-family: var(--serif);
  font-weight: 500;
}
.viz-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  max-width: none;
}

/* Viewport pages */
.viewport-page {
  padding: 48px 0 64px;
}
.viewport-back {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 24px;
  border: none;
}
.viewport-back:hover { color: var(--cobalt); }
.viewport-intro {
  max-width: var(--measure);
  margin-bottom: 40px;
}
.viewport-intro .label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cobalt);
  margin-bottom: 10px;
}
.viewport-intro h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin: 0 0 16px;
}
.viewport-intro p { color: var(--muted); font-size: 1rem; line-height: 1.55; }

.viz-stage {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 24px;
  margin-bottom: 24px;
  position: relative;
}
.viz-stage svg { width: 100%; }

.viz-caption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  max-width: var(--measure);
  margin-top: 16px;
}

.viz-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.viz-legend .swatch {
  display: inline-block;
  width: 14px; height: 14px;
  margin-right: 6px;
  vertical-align: middle;
  border-radius: 2px;
}

/* BMC grid */
.bmc-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 8px;
  min-height: 480px;
}
.bmc-block {
  background: rgba(27, 58, 140, 0.04);
  border: 1px solid var(--border);
  padding: 14px 16px;
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  transition: background 0.2s;
}
.bmc-block:hover { background: rgba(27, 58, 140, 0.09); }
.bmc-block .blk-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--cobalt);
  letter-spacing: 0.08em;
}
.bmc-block .blk-title {
  font-family: var(--serif);
  font-size: 0.95rem;
  margin-top: 2px;
  margin-bottom: 8px;
  color: var(--ink);
}
.bmc-block ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--muted);
}
.bmc-block ul li {
  margin-bottom: 4px;
  padding-left: 9px;
  position: relative;
}
.bmc-block ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 4px; height: 1px;
  background: var(--cobalt);
}
.bmc-block.b-kp { grid-column: 1; grid-row: 1 / 3; }
.bmc-block.b-ka { grid-column: 2; grid-row: 1; }
.bmc-block.b-kr { grid-column: 2; grid-row: 2; }
.bmc-block.b-vp { grid-column: 3; grid-row: 1 / 3; background: rgba(27, 58, 140, 0.07); }
.bmc-block.b-cr { grid-column: 4; grid-row: 1; }
.bmc-block.b-ch { grid-column: 4; grid-row: 2; }
.bmc-block.b-cs { grid-column: 5; grid-row: 1 / 3; }
.bmc-cost-rev {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}
.bmc-cost-rev .bmc-block { background: rgba(197, 164, 114, 0.08); }

@media (max-width: 880px) {
  .bmc-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: minmax(110px, auto); }
  .bmc-block.b-kp, .bmc-block.b-ka, .bmc-block.b-kr,
  .bmc-block.b-vp, .bmc-block.b-cr, .bmc-block.b-ch, .bmc-block.b-cs {
    grid-column: auto; grid-row: auto;
  }
}

/* Six-layer stack */
.layer-stack {
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
  max-width: 720px;
  margin: 0 auto;
}
.stack-layer {
  background: var(--paper);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cobalt);
  padding: 22px 28px;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  position: relative;
}
.stack-layer:hover, .stack-layer.expanded {
  background: rgba(27, 58, 140, 0.04);
  transform: translateX(4px);
}
.stack-layer .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.stack-layer .left {
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.stack-layer .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cobalt);
  letter-spacing: 0.1em;
  min-width: 28px;
}
.stack-layer .name {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
}
.stack-layer .toggle {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--cobalt);
  font-weight: 300;
  transition: transform 0.2s;
}
.stack-layer.expanded .toggle { transform: rotate(45deg); }
.stack-layer .detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, margin-top 0.3s ease;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}
.stack-layer.expanded .detail {
  max-height: 200px;
  margin-top: 14px;
}

/* Gap matrix */
.matrix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.matrix-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  align-items: stretch;
}
@media (max-width: 720px) { .matrix-row { grid-template-columns: 1fr; } }
.matrix-row .row-head {
  background: rgba(27, 58, 140, 0.08);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cobalt);
  padding: 18px 20px;
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.matrix-row .row-head .label {
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cobalt);
}
.matrix-row .row-head .title {
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--ink);
  margin-top: 6px;
}
.matrix-row .row-head .desc {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.4;
}
.matrix-row .cells {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
@media (max-width: 720px) { .matrix-row .cells { grid-template-columns: 1fr; } }
.matrix-cell {
  background: var(--paper);
  border: 1px solid var(--border);
  border-style: dashed;
  border-radius: 3px;
  padding: 16px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.matrix-cell .cat {
  color: var(--cobalt);
  font-weight: 500;
  font-size: 11px;
  margin-bottom: 4px;
}
.matrix-cell .placeholder {
  font-family: var(--sans);
  font-size: 0.85rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--muted);
  font-style: italic;
}

/* Engagement timeline */
.tl-canvas {
  position: relative;
  padding: 32px 0 16px;
}
.tl-axis {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}
.tl-axis .wk {
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-align: center;
}
.tl-band {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  align-items: stretch;
  margin-bottom: 8px;
}
@media (max-width: 720px) { .tl-band { grid-template-columns: 1fr; } }
.tl-band .head {
  background: rgba(27, 58, 140, 0.05);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cobalt);
  padding: 14px 16px;
  border-radius: 3px;
}
.tl-band .head .label {
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cobalt);
}
.tl-band .head .title {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  margin-top: 4px;
}
.tl-band .bar {
  position: relative;
  background: rgba(197, 164, 114, 0.12);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
}
.tl-band .bar.b-1 { background: linear-gradient(90deg, rgba(27, 58, 140, 0.16) 0%, rgba(27, 58, 140, 0.16) 16.66%, transparent 16.66%); }
.tl-band .bar.b-24 { background: linear-gradient(90deg, transparent 16.66%, rgba(27, 58, 140, 0.16) 16.66%, rgba(27, 58, 140, 0.16) 66.66%, transparent 66.66%); }
.tl-band .bar.b-5 { background: linear-gradient(90deg, transparent 66.66%, rgba(197, 164, 114, 0.32) 66.66%, rgba(197, 164, 114, 0.32) 83.33%, transparent 83.33%); }
.tl-band .bar.b-6 { background: linear-gradient(90deg, transparent 83.33%, rgba(179, 60, 46, 0.16) 83.33%, rgba(179, 60, 46, 0.16) 100%); }
.tl-band .bar .activities {
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.5;
}
.tl-decision {
  margin-top: 28px;
  padding: 18px 22px;
  background: rgba(179, 60, 46, 0.05);
  border: 1px solid rgba(179, 60, 46, 0.3);
  border-left: 4px solid var(--critical);
  border-radius: 3px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.tl-decision .marker {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--critical);
  font-weight: 600;
}
.tl-decision .desc { color: var(--ink); font-size: 0.95rem; }

/* D3 viz utilities */
.node-label {
  font-family: var(--mono);
  font-size: 9.5px;
  fill: var(--muted);
  letter-spacing: 0.02em;
  pointer-events: none;
}
.node-circle, .node-square, .node-diamond {
  cursor: pointer;
  transition: opacity 0.15s;
}
.tooltip {
  position: absolute;
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  box-shadow: var(--shadow);
  max-width: 220px;
}

/* Print */
@media print {
  .topbar, .viz-cta { display: none; }
  body { background: white; }
}