:root {
  --paper: #fafaf8;
  --ink: #0a0a0b;
  --graphite: #3d3d40;
  --steel: #8a8d91;
  --signal: #1530a6;
  --signal-dim: rgb(21 48 166 / 12%);
  --alert: #b3261e;
  --rule: rgb(61 61 64 / 22%);
  --panel: rgb(255 255 255 / 42%);
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --sans: "Inter", "Inter Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max: 1200px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #0a0a0b;
  --ink: #fafaf8;
  --graphite: #b5b7ba;
  --steel: #8a8d91;
  --rule: rgb(250 250 248 / 20%);
  --panel: rgb(250 250 248 / 7%);
  --signal-dim: rgb(21 48 166 / 30%);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.45;
}

body {
  margin: 0;
  min-width: 320px;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--signal);
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

button,
input {
  font: inherit;
}

code,
th,
.readout,
.eyebrow,
.object-button small,
.viewer-controls span,
.select-input,
.segmented,
.inspector-buttons,
.rail-list dt,
.source-slot {
  font-family: var(--mono);
}

.topbar {
  align-items: center;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr auto auto;
  height: 56px;
  left: 0;
  padding: 0 max(16px, calc((100vw - var(--max)) / 2));
  position: sticky;
  right: 0;
  top: 0;
  -webkit-backdrop-filter: blur(12px);
  z-index: 5;
}

.wordmark {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav {
  align-items: center;
  display: flex;
  gap: 18px;
  height: 56px;
  justify-content: end;
}

.nav a {
  border-bottom: 1px solid transparent;
  color: var(--graphite);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 20px 0 17px;
  text-transform: uppercase;
}

.nav a[aria-current="page"] {
  border-color: var(--signal);
  color: var(--signal);
}

.topbar a:hover,
.topbar a:focus-visible {
  color: var(--signal);
}

.mode-toggle,
.button {
  align-items: center;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  height: 34px;
  justify-content: center;
  min-width: 38px;
  padding: 0 12px;
}

.mode-toggle {
  border-color: transparent;
  padding: 0;
  width: 38px;
}

.theme-icon {
  color: var(--ink);
  display: block;
  fill: currentColor;
  height: 24px;
  width: 24px;
}

.theme-icon-sun {
  display: none;
}

.theme-icon-moon {
  display: block;
}

:root[data-theme="dark"] .theme-icon-sun {
  display: block;
}

:root[data-theme="dark"] .theme-icon-moon {
  display: none;
}

.mode-toggle:hover,
.mode-toggle:focus-visible {
  background: var(--signal-dim);
  border-color: transparent;
}

.sr-only {
  clip: rect(0 0 0 0);
  border: 0;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.button:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.page-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  margin: 0 auto;
  max-width: var(--max);
  padding: 48px 16px 64px;
}

.intro-block,
.page-heading {
  border-bottom: 1px solid var(--rule);
  grid-column: 1 / span 6;
  padding-bottom: 24px;
}

.page-heading {
  grid-column: 1 / -1;
}

.eyebrow {
  color: var(--signal);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(32px, 6vw, 64px);
  letter-spacing: -0.02em;
  line-height: 0.98;
  margin-bottom: 18px;
  max-width: 820px;
}

h2 {
  font-size: 18px;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0;
}

.lede {
  color: var(--graphite);
  font-size: 18px;
  max-width: 760px;
}

.mini-viewer {
  grid-column: 7 / -1;
}

canvas {
  background: var(--paper);
  border: 1px solid var(--rule);
  display: block;
  height: auto;
  max-width: 100%;
  width: 100%;
}

.viewer-panel canvas {
  cursor: grab;
  touch-action: none;
}

.viewer-panel canvas:active {
  cursor: grabbing;
}

.section-rule {
  align-items: end;
  border-bottom: 1px solid var(--rule);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 8px;
}

.section-rule span,
.section-rule a {
  color: var(--steel);
  font-family: var(--mono);
  font-size: 12px;
}

.readout-grid {
  display: grid;
  gap: 0;
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.readout {
  background: var(--paper);
  border: 1px solid var(--rule);
  margin: 0 -1px -1px 0;
  min-height: 112px;
  padding: 14px;
}

.readout span {
  color: var(--steel);
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.readout strong {
  display: block;
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin-bottom: 8px;
}

.readout code {
  color: var(--graphite);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.route-table,
.project-strip,
.technical-panel,
.diagram-panel,
.resume-main {
  grid-column: 1 / -1;
}

.project-row {
  border-bottom: 1px solid var(--rule);
  display: grid;
  gap: 16px;
  grid-template-columns: 220px 1fr 260px;
  padding: 16px 0;
}

.project-row h3,
.project-row p {
  margin: 0;
}

.project-row h3 {
  font-size: 18px;
  letter-spacing: -0.01em;
}

.project-row p {
  color: var(--graphite);
}

.project-row > a {
  color: var(--signal);
  font-family: var(--mono);
  font-size: 12px;
  overflow-wrap: anywhere;
  text-align: right;
}

.contact-strip {
  border: 1px solid var(--rule);
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: -1px;
}

.contact-strip a {
  border-right: 1px solid var(--rule);
  min-height: 86px;
  padding: 14px;
}

.contact-strip a:last-child {
  border-right: 0;
}

.contact-strip span {
  color: var(--steel);
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.contact-strip strong {
  color: var(--signal);
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--rule);
  padding: 13px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--signal);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  width: 24%;
}

td {
  color: var(--graphite);
}

.neo-page {
  align-items: stretch;
}

.object-panel {
  grid-column: 1 / span 3;
}

.viewer-panel {
  grid-column: 4 / span 6;
}

.data-panel {
  grid-column: 10 / span 3;
}

.object-panel,
.viewer-panel,
.data-panel {
  background: var(--paper);
  border: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  min-height: 760px;
  padding: 12px;
}

.viewer-panel {
  min-height: 760px;
}

.panel-title {
  flex: 0 0 auto;
}

.field-label {
  color: var(--steel);
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.text-input {
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  height: 38px;
  margin-bottom: 10px;
  padding: 0 10px;
  width: 100%;
}

.select-input {
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  height: 34px;
  padding: 0 8px;
  width: 100%;
}

.object-list {
  border: 1px solid var(--rule);
  flex: 1 1 auto;
  overflow: auto;
}

.object-button {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  cursor: pointer;
  display: block;
  padding: 12px;
  text-align: left;
  width: 100%;
}

.object-button strong,
.object-button small {
  display: block;
}

.object-button small {
  color: var(--steel);
  font-size: 11px;
  margin-top: 4px;
}

.object-button[aria-selected="true"] {
  background: var(--signal-dim);
  color: var(--signal);
}

.viewer-controls {
  border: 1px solid var(--rule);
  border-top: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(240px, 1fr) minmax(210px, 0.45fr);
  padding: 12px;
}

.viewer-controls label {
  display: grid;
  gap: 4px;
}

.viewer-controls span {
  color: var(--steel);
  font-size: 11px;
  text-transform: uppercase;
}

input[type="range"] {
  accent-color: var(--signal);
  width: 100%;
}

.checkbox-control {
  align-items: center;
  display: flex !important;
  gap: 8px !important;
  justify-content: center;
}

.checkbox-control input {
  accent-color: var(--signal);
}

.segmented,
.inspector-buttons {
  display: grid;
  gap: 0;
  grid-template-columns: repeat(3, 1fr);
}

.inspector-buttons {
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 12px;
}

.segmented button,
.inspector-buttons button {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--graphite);
  cursor: pointer;
  font-size: 11px;
  min-height: 34px;
  padding: 0 8px;
}

.segmented button:hover,
.segmented button:focus-visible,
.inspector-buttons button:hover,
.inspector-buttons button:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

.object-inspector {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 0;
  flex: 0 0 auto;
  padding: 12px;
}

.metric-list {
  display: grid;
  position: relative;
  z-index: 0;
}

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

.metric {
  background: var(--paper);
  border: 1px solid var(--rule);
  margin: 0 -1px -1px 0;
  padding: 11px 12px;
  position: relative;
  z-index: 1;
}

.metric span,
.metric code {
  display: block;
}

.metric span {
  color: var(--steel);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
}

.metric code {
  color: var(--ink);
  font-size: 18px;
  margin-top: 4px;
}

.data-panel > .metric-list {
  flex: 1 1 auto;
  overflow: visible;
}

.data-panel > .readout {
  background: var(--paper);
  flex: 0 0 auto;
}

.btree-page .page-heading {
  grid-column: 1 / span 7;
}

.btree-page .readout-grid {
  grid-column: 8 / -1;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.btree-diagram {
  border: 1px solid var(--rule);
  padding: 24px;
}

.page-layout-diagram {
  display: grid;
  gap: 16px;
  grid-template-columns: 0.8fr 1.5fr 0.9fr;
}

.page-block,
.lineage-box {
  border: 1px solid var(--rule);
  padding: 14px;
}

.page-block code,
.lineage-box code {
  color: var(--signal);
  display: block;
  font-size: 12px;
  margin-bottom: 12px;
}

.page-block span {
  border-top: 1px solid var(--rule);
  color: var(--graphite);
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  padding: 7px 0;
}

.artifact-grid,
.lineage-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.artifact-grid h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.artifact-grid p,
.lineage-box p {
  color: var(--graphite);
}

pre {
  background: var(--panel);
  border: 1px solid var(--rule);
  margin: 14px 0 0;
  max-width: 100%;
  overflow: auto;
  padding: 14px;
}

pre code {
  color: var(--ink);
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre;
}

.node {
  border: 1px solid var(--rule);
  padding: 14px;
}

.node code,
.node span {
  display: block;
}

.node code {
  color: var(--signal);
  font-size: 12px;
  margin-bottom: 10px;
}

.node.root {
  margin: 0 auto;
  max-width: 260px;
}

.node.active {
  background: var(--signal-dim);
  border-color: var(--signal);
}

.branch-line {
  border-left: 1px solid var(--rule);
  height: 34px;
  margin: 0 auto;
  width: 1px;
}

.node-row {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
}

.split-arrow {
  border-top: 1px solid var(--rule);
  color: var(--graphite);
  font-family: var(--mono);
  font-size: 12px;
  margin-top: 24px;
  padding-top: 14px;
}

.resume-page {
  align-items: start;
}

.resume-rail {
  border-right: 1px solid var(--rule);
  grid-column: 1 / span 4;
  padding-right: 24px;
}

.resume-rail h1 {
  font-size: 42px;
}

.resume-main {
  grid-column: 5 / -1;
}

.rail-list {
  margin: 24px 0 0;
}

.rail-list dt {
  color: var(--steel);
  font-size: 11px;
  margin-top: 18px;
  text-transform: uppercase;
}

.rail-list dd {
  color: var(--graphite);
  margin: 4px 0 0;
}

.notice {
  border: 1px solid color-mix(in srgb, var(--alert) 48%, transparent);
  margin-bottom: 32px;
  padding: 16px;
}

.notice strong {
  color: var(--alert);
}

.notice p {
  color: var(--graphite);
  margin: 8px 0 0;
}

.resume-section {
  margin-top: 32px;
}

.resume-entry {
  border-bottom: 1px solid var(--rule);
  padding: 16px 0;
}

.resume-entry:first-of-type {
  padding-top: 0;
}

.resume-entry-head {
  align-items: baseline;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 8px;
}

.resume-entry h3 {
  font-size: 18px;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 2px;
}

.resume-entry p {
  color: var(--graphite);
  font-style: italic;
  margin: 0;
}

.resume-entry code {
  color: var(--steel);
  flex: 0 0 auto;
  font-size: 12px;
  text-align: right;
}

.resume-entry ul {
  color: var(--graphite);
  margin: 0;
  padding-left: 18px;
}

.resume-entry li {
  margin: 0 0 6px;
}

.resume-skill-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.slot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.source-slot {
  border: 1px dashed var(--rule);
  color: var(--steel);
  font-size: 12px;
  margin: 0 -1px -1px 0;
  min-height: 92px;
  padding: 14px;
}

@media (prefers-reduced-motion: no-preference) {
  a,
  button,
  .object-button {
    transition: background-color 80ms linear, border-color 80ms linear, color 80ms linear;
  }
}

@media (max-width: 860px) {
  .topbar {
    gap: 10px;
    grid-template-columns: auto minmax(0, 1fr) auto;
    height: 56px;
    min-height: 56px;
  }

  .nav {
    grid-column: auto;
    gap: 14px;
    height: 56px;
    justify-content: start;
    overflow-x: auto;
  }

  .nav a {
    padding: 20px 0 17px;
    white-space: nowrap;
  }

  .page-grid {
    display: block;
    padding-top: 32px;
  }

  .intro-block,
  .page-heading,
  .mini-viewer,
  .object-panel,
  .viewer-panel,
  .data-panel,
  .technical-panel,
  .diagram-panel,
  .readout-grid,
  .contact-strip,
  .project-strip,
  .neo-readouts,
  .resume-rail,
  .resume-main,
  .btree-page .page-heading,
  .btree-page .readout-grid {
    margin-bottom: 28px;
  }

  .object-panel,
  .viewer-panel,
  .data-panel {
    min-height: 0;
  }

  .viewer-panel canvas {
    aspect-ratio: 4 / 3;
    height: auto;
  }

  .neo-page {
    display: flex;
    flex-direction: column;
  }

  .neo-page .page-heading {
    order: 0;
  }

  .neo-page .viewer-panel {
    order: 1;
  }

  .neo-page .data-panel {
    order: 2;
  }

  .neo-page .object-panel {
    order: 3;
  }

  .neo-page .neo-readouts {
    order: 4;
  }

  .neo-page .technical-panel {
    order: 5;
  }

  .readout-grid,
  .btree-page .readout-grid,
  .resume-skill-grid,
  .metric-list.compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .readout {
    min-height: 96px;
    padding: 12px;
  }

  .readout span {
    margin-bottom: 10px;
  }

  .readout strong {
    font-size: 17px;
  }

  .node-row,
  .slot-grid,
  .contact-strip,
  .project-row,
  .page-layout-diagram,
  .artifact-grid,
  .lineage-grid,
  .inspector-buttons,
  .segmented,
  .viewer-controls {
    grid-template-columns: 1fr;
  }

  .project-row {
    gap: 8px;
    padding: 14px 0;
  }

  .project-row p {
    line-height: 1.35;
  }

  .project-row > a {
    margin-top: 2px;
    text-align: left;
  }

  .btree-page pre {
    overflow-x: hidden;
    padding: 12px;
  }

  .btree-page pre code {
    font-size: 10px;
    line-height: 1.4;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
  }

  .contact-strip a {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .contact-strip a:last-child {
    border-bottom: 0;
  }

  .resume-entry-head {
    display: block;
  }

  .resume-entry code {
    display: block;
    margin-top: 6px;
    text-align: left;
  }

  .resume-rail {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding: 0 0 18px;
  }

  .resume-rail h1 {
    font-size: 34px;
    margin-bottom: 14px;
  }

  .resume-rail .readout {
    min-height: 0;
  }

  .rail-list {
    margin-top: 16px;
  }

  .rail-list dt {
    margin-top: 12px;
  }

  .rail-list dd {
    font-size: 14px;
  }

  h1 {
    font-size: 38px;
  }

}