.hero h1 {
  font-size: 58px;
}

.scope-ledger {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.scope-item {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: 6px;
  background: var(--surface);
}

.scope-item.new {
  border-left-color: var(--teal);
  background: var(--soft-teal);
}

.scope-item strong,
.scope-item span,
.scope-item a {
  display: block;
}

.scope-item span {
  margin: 4px 0 7px;
  color: var(--muted);
  font-size: 14px;
}

.stack-map {
  display: grid;
  gap: 8px;
}

.stack-lane {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 9px;
  align-items: stretch;
}

.lane-label {
  display: grid;
  align-content: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.stack-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
}

.stack-node {
  min-width: 0;
  min-height: 86px;
  display: grid;
  align-content: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: 6px;
  background: var(--surface);
}

.stack-node.control {
  border-top-color: var(--blue);
}

.stack-node.hardware {
  border-top-color: var(--amber);
}

.stack-node strong,
.stack-node span {
  display: block;
  overflow-wrap: anywhere;
}

.stack-node span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.stack-node a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, var(--teal) 55%, transparent);
  text-underline-offset: 3px;
}

.stack-node a:hover {
  color: var(--teal);
  text-decoration-color: currentColor;
}

.boundary-line {
  margin-left: 141px;
  padding: 4px 10px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
  text-transform: uppercase;
}

.stack-catalog-heading {
  max-width: 850px;
  margin-top: 34px;
}

.stack-catalog-heading h3,
.artifact-anatomy h3 {
  margin-top: 0;
  font-size: 26px;
}

.stack-catalog {
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

.stack-detail-group {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.stack-group-heading {
  align-self: start;
}

.stack-group-number {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
}

.stack-group-heading h3 {
  margin: 9px 0 6px;
  font-size: 19px;
}

.stack-group-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.stack-detail-list {
  min-width: 0;
}

.stack-detail-item {
  min-width: 0;
  padding-bottom: 23px;
  scroll-margin-top: 20px;
}

.stack-detail-item + .stack-detail-item {
  padding-top: 23px;
  border-top: 1px solid var(--line);
}

.stack-detail-item:last-child {
  padding-bottom: 0;
}

.component-heading {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
}

.component-heading h4 {
  margin: 0;
  font-size: 19px;
  line-height: 1.35;
}

.plane-chip {
  flex: 0 0 auto;
  min-height: 25px;
  display: inline-flex;
  align-items: center;
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.plane-data {
  color: var(--teal);
  background: var(--soft-teal);
}

.plane-control {
  color: var(--blue);
  background: var(--soft-blue);
}

.plane-both {
  color: var(--amber);
  background: var(--soft-amber);
}

.component-purpose {
  max-width: 900px;
  margin: 8px 0 0;
}

.component-contract {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 15px 0 0;
}

.component-contract div {
  min-width: 0;
  padding-left: 11px;
  border-left: 2px solid var(--line);
}

.component-contract dt {
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.component-contract dd {
  margin: 5px 0 0;
  font-size: 13px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.component-risk {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 3px solid var(--amber);
  background: var(--soft-amber);
  color: var(--muted);
  font-size: 13px;
}

.component-risk strong {
  color: var(--ink);
}

.artifact-anatomy {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 20px;
}

.artifact-load-flow {
  margin-top: 12px;
}

.tabbed-explorer {
  display: grid;
  grid-template-columns: minmax(230px, 0.72fr) minmax(0, 1.6fr);
  gap: 14px;
}

.tab-list {
  display: grid;
  align-content: start;
  gap: 7px;
}

.tab-button {
  width: 100%;
  min-height: 58px;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  background: var(--surface);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.tab-button:hover,
.tab-button[aria-selected="true"] {
  border-color: var(--teal);
  background: var(--soft-teal);
}

.tab-index {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.tab-button strong,
.tab-button span {
  display: block;
}

.tab-button span {
  color: var(--muted);
  font-size: 12px;
}

.tab-panel {
  min-height: 430px;
}

.tab-panel[hidden] {
  display: none;
}

.contract-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 14px;
}

.contract-cell {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
}

.contract-cell strong,
.contract-cell span {
  display: block;
}

.contract-cell span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 14px;
}

.engineering-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 9px;
}

.engineering-flow.six {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.flow-step {
  position: relative;
  min-width: 0;
  min-height: 116px;
  display: grid;
  align-content: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}

.flow-step:not(:last-child)::after {
  content: ">";
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -9px;
  width: 17px;
  height: 24px;
  display: grid;
  place-items: center;
  transform: translateY(-50%);
  background: var(--page);
  color: var(--muted);
  font-weight: 800;
}

.flow-step b,
.flow-step strong,
.flow-step span {
  display: block;
  overflow-wrap: anywhere;
}

.flow-step b {
  color: var(--teal);
  font-size: 12px;
  text-transform: uppercase;
}

.flow-step strong {
  margin: 4px 0;
}

.flow-step span {
  color: var(--muted);
  font-size: 13px;
}

.code-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.code-panel header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 13px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.code-panel header span {
  color: var(--muted);
  font-size: 13px;
}

.code-panel pre {
  max-width: 100%;
  margin: 0;
  overflow: auto;
  padding: 15px;
  color: var(--ink);
  font: 13px/1.55 Consolas, "Courier New", monospace;
  tab-size: 2;
}

.code-panel pre code {
  border: 0;
  padding: 0;
  background: transparent;
  font: inherit;
}

.formula-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.formula-card {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue);
  border-radius: 6px;
  background: var(--surface);
}

.formula-card code,
.formula-card strong,
.formula-card span {
  display: block;
}

.formula-card code {
  margin: 5px 0;
  color: var(--blue);
  font-size: 15px;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.formula-card span {
  color: var(--muted);
  font-size: 13px;
}

.trace-view {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.trace-row {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.trace-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.trace-track {
  min-height: 34px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--surface-2);
}

.trace-segment {
  min-width: 0;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--soft-teal);
  color: var(--teal-strong);
  font-size: 11px;
  font-weight: 800;
  overflow: hidden;
}

.trace-segment.blue {
  background: var(--soft-blue);
  color: var(--blue);
}

.trace-segment.amber {
  background: var(--soft-amber);
  color: var(--amber);
}

.trace-segment.red {
  background: var(--soft-red);
  color: var(--red);
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 9px;
}

.level-card {
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}

.level-card b,
.level-card strong,
.level-card span {
  display: block;
}

.level-card b {
  color: var(--teal);
  font-size: 12px;
}

.level-card strong {
  margin: 4px 0;
}

.level-card span {
  color: var(--muted);
  font-size: 13px;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 14px;
}

.segment-button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

.segment-button:hover,
.segment-button[aria-pressed="true"] {
  border-color: var(--teal);
  background: var(--soft-teal);
  color: var(--teal-strong);
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.skill-card {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.skill-card[hidden] {
  display: none;
}

.skill-card .card-label {
  display: block;
  margin-bottom: 6px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.skill-evidence {
  margin: 10px 0 0;
  padding-top: 9px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.progress-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
}

.progress-panel .progress-track {
  min-width: 0;
}

.progress-value {
  min-width: 68px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-align: right;
}

.lab-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.lab-item {
  min-width: 0;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}

.lab-item input {
  width: 17px;
  height: 17px;
  margin: 3px 0 0;
  accent-color: var(--teal);
}

.lab-item strong,
.lab-item span {
  display: block;
}

.lab-item span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 14px;
}

.note-list {
  margin: 0;
  padding-left: 21px;
}

.note-list li + li {
  margin-top: 7px;
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 13px;
}

.inline-links a {
  font-weight: 700;
}

.compact-table table {
  min-width: 680px;
}

@media (max-width: 1040px) {
  .scope-ledger,
  .skill-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .component-contract {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .engineering-flow,
  .engineering-flow.six,
  .level-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .flow-step::after {
    display: none;
  }

  .formula-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .hero h1 {
    font-size: 40px;
  }

  .scope-ledger,
  .tabbed-explorer,
  .skill-grid,
  .lab-list {
    grid-template-columns: 1fr;
  }

  .tab-panel {
    min-height: 0;
  }

  .stack-lane {
    grid-template-columns: 1fr;
  }

  .stack-detail-group {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .stack-group-heading {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 0 10px;
    align-items: center;
  }

  .stack-group-heading h3 {
    margin: 0;
  }

  .stack-group-heading p {
    grid-column: 1 / -1;
    margin-top: 8px;
  }

  .lane-label {
    min-height: 38px;
  }

  .boundary-line {
    margin-left: 0;
  }

  .contract-grid,
  .engineering-flow,
  .engineering-flow.six,
  .level-grid,
  .formula-grid {
    grid-template-columns: 1fr;
  }

  .flow-step {
    min-height: 88px;
  }

  .trace-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 34px;
  }

  .component-heading {
    display: grid;
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .component-heading .plane-chip {
    justify-self: start;
  }

  .component-contract {
    grid-template-columns: 1fr;
  }

  .stack-nodes {
    grid-template-columns: 1fr;
  }

  .trace-track {
    min-width: 660px;
  }

  .trace-row {
    overflow-x: auto;
  }

  .progress-panel {
    grid-template-columns: 1fr;
  }

  .progress-value {
    text-align: left;
  }
}

@media print {
  .segmented,
  .tab-list,
  .progress-panel input {
    display: none;
  }

  .tabbed-explorer {
    display: block;
  }

  .tab-panel[hidden],
  .skill-card[hidden] {
    display: block;
  }
}