/* Applied from elayadesign/ai-design-skills: B1, B2, B7, B9, B10.
   Named typography + spacing are shared by every v7 exploration view. */
@font-face {
  font-family: Geist;
  src: url('./media/fonts/Geist-Variable.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
html {
  --spacing-0: 0;
  --spacing-25: 2px;
  --spacing-50: 4px;
  --spacing-75: 8px;
  --spacing-100: 12px;
  --spacing-200: 16px;
  --spacing-300: 24px;
  --spacing-400: 32px;
  --spacing-500: 40px;
  --spacing-600: 48px;
  --spacing-700: 64px;
  --spacing-800: 80px;
  --spacing-900: 96px;
  --text-xs: .75rem;
  --text-sm: .875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --line-xs: 1rem;
  --line-sm: 1.25rem;
  --line-base: 1.5rem;
  --line-lg: 1.75rem;
  --line-2xl: 2rem;
  --line-3xl: 2.25rem;
  --line-4xl: 2.5rem;
  --explore-radius: 4px;
  --surface-primary: var(--paper);
  --surface-secondary: var(--panel);
  --surface-hover: color-mix(in srgb, var(--ink) 5%, var(--paper));
  --text-primary: var(--ink);
  --text-secondary: var(--muted);
  --border-primary: var(--line);
  --action-primary: var(--ink);
  --action-inverted: var(--paper);
  --motion-ease: cubic-bezier(.22, 1, .36, 1);
  --motion-position: 500ms;
  --motion-state: 300ms;
}
html:not([data-style="terminal"]) {
  --sans: Geist, "PingFang SC", "Noto Sans CJK SC", sans-serif;
}
html[data-style="openai"] { --explore-radius: 16px; }
html[data-style="terminal"] { --explore-radius: 0; }

/* Same names as the skill's text styles. No arbitrary component font sizes. */
.heading-1 { font: 600 var(--text-6xl)/1 var(--heading); }
.heading-2 { font: 600 var(--text-5xl)/1 var(--heading); }
.heading-3 { font: 600 var(--text-4xl)/var(--line-4xl) var(--heading); }
.heading-4 { font: 600 var(--text-3xl)/var(--line-3xl) var(--heading); }
.heading-5 { font: 600 var(--text-2xl)/var(--line-2xl) var(--heading); }
.heading-6 { font: 600 var(--text-xl)/var(--line-lg) var(--heading); }
.title-1 { font: 500 var(--text-xl)/var(--line-lg) var(--sans); }
.title-2 { font: 500 var(--text-lg)/var(--line-lg) var(--sans); }
.title-3 { font: 500 var(--text-base)/var(--line-base) var(--sans); }
.title-4 { font: 500 var(--text-sm)/var(--line-sm) var(--sans); }
.title-5 { font: 500 var(--text-xs)/var(--line-xs) var(--sans); }
.body-1 { font: 600 var(--text-base)/var(--line-base) var(--sans); }
.body-2 { font: 500 var(--text-base)/var(--line-base) var(--sans); }
.body-3 { font: 400 var(--text-base)/var(--line-base) var(--sans); }
.body-4 { font: 600 var(--text-sm)/var(--line-sm) var(--sans); }
.body-5 { font: 500 var(--text-sm)/var(--line-sm) var(--sans); }
.body-6 { font: 400 var(--text-sm)/var(--line-sm) var(--sans); }
.button-lg { font: 600 var(--text-lg)/var(--line-lg) var(--sans); }
.button-md { font: 600 var(--text-base)/var(--line-base) var(--sans); }
.button-sm { font: 600 var(--text-sm)/var(--line-sm) var(--sans); }
.button-xsm { font: 600 var(--text-xs)/var(--line-xs) var(--sans); }
.caption-1 { font: 500 var(--text-sm)/var(--line-sm) var(--sans); }
.caption-2 { font: 400 var(--text-sm)/var(--line-sm) var(--sans); }
.caption-3 { font: 600 var(--text-xs)/var(--line-xs) var(--sans); }
.caption-4 { font: 500 var(--text-xs)/var(--line-xs) var(--sans); }
.caption-5 { font: 400 var(--text-xs)/var(--line-xs) var(--sans); }

/* The three questions stay in view; the atlas keeps its fixed three lanes. */
.skip-link { position: fixed; z-index: 20; left: var(--spacing-200); top: var(--spacing-200); padding: var(--spacing-100) var(--spacing-200); color: var(--paper); background: var(--ink); border-radius: 4px; transform: translateY(calc(-100% - var(--spacing-400))); font: 600 var(--text-sm)/var(--line-sm) var(--sans); }
.skip-link:focus { transform: translateY(0); }
header { min-height: 64px; gap: var(--spacing-300); }
html .header-actions { gap: var(--spacing-200); }
html .header-actions>button { font: 600 var(--text-sm)/var(--line-sm) var(--sans); }
html .header-actions>button:first-child { font-size: var(--text-sm); gap: var(--spacing-75); }
html .style-switch select { font: 500 var(--text-xs)/var(--line-xs) var(--sans); }
html .brand>span { font-size: var(--text-xs); letter-spacing: .08em; }
html .edition { font-size: var(--text-xs); letter-spacing: .04em; }
.view-switch {
  display: flex;
  align-self: flex-start;
  align-items: center;
  gap: var(--spacing-50);
  flex-shrink: 0;
  margin: var(--spacing-100) var(--spacing-400) var(--spacing-0);
  padding: var(--spacing-50);
  border: 1px solid var(--border-primary);
  border-radius: 8px;
  background: var(--surface-secondary);
}
.view-switch button {
  position: relative;
  min-height: 40px;
  padding: var(--spacing-75) var(--spacing-300);
  border-radius: 4px;
  color: var(--text-secondary);
  font: 500 var(--text-sm)/var(--line-sm) var(--sans);
}
.view-switch button[aria-pressed="true"] {
  background: var(--action-primary);
  color: var(--action-inverted);
  font-weight: 600;
}
.view-switch button[aria-pressed="false"]:hover { background: var(--surface-hover); color: var(--text-primary); }
#timeline-view { display: flex; flex: 1; flex-direction: column; min-height: 0; }
#timeline-view .lane-labels { grid-template-rows: repeat(3, minmax(0, 1fr)); }
#timeline-view .lane-label { min-height: 0; overflow: hidden; }
body:not([data-view="timeline"]) main { overflow: hidden; }
.explore-view {
  flex: 1;
  min-height: 0;
  overflow: auto;
  scrollbar-gutter: stable;
  padding: var(--spacing-400) var(--spacing-400) var(--spacing-700);
  scroll-padding-block: var(--spacing-300);
  color: var(--text-primary);
}
.explore-view>* { max-width: 86rem; margin-inline: auto; }
.explore-view :is(h1,h2,h3,strong) { text-wrap: balance; }
.explore-view :is(p,span) { text-wrap: pretty; }
.explore-view :is(h1,h2,h3,p,button,a) { overflow-wrap: anywhere; }
.explore-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--spacing-400);
  margin-bottom: var(--spacing-400);
}
.explore-heading h1 { max-width: 680px; letter-spacing: -.045em; }
.explore-heading p { max-width: 65ch; margin-top: var(--spacing-200); color: var(--text-secondary); }
.heading-row { min-width: 0; }
.explore-heading>#systems-count { flex: 0 0 auto; padding-bottom: var(--spacing-50); color: var(--text-secondary); }

/* One-hop genealogy: a quiet index, a dominant center, evidence close by. */
.relation-workspace { display: grid; grid-template-columns: minmax(11rem, 14rem) minmax(0, 1fr); gap: var(--spacing-400); align-items: start; }
.relation-picker {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-100);
  min-width: 0;
  max-height: calc(100dvh - 19rem);
}
.relation-picker>label { color: var(--text-secondary); }
.explore-view input[type="search"] {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 44px;
  flex: 0 0 auto;
  padding: var(--spacing-100) var(--spacing-200);
  border: 1px solid var(--border-primary);
  border-radius: var(--explore-radius);
  color: var(--text-primary);
  background: var(--surface-primary);
  font: 400 var(--text-sm)/var(--line-sm) var(--sans);
  -webkit-appearance: none;
}
.explore-view input::placeholder { color: var(--text-secondary); opacity: 1; }
#relation-index { display: flex; flex-direction: column; gap: var(--spacing-50); overflow: auto; min-height: 0; padding: var(--spacing-50); margin: calc(-1 * var(--spacing-50)); }
.relation-option { display: flex; flex-direction: column; align-items: start; gap: var(--spacing-50); min-height: 64px; text-align: left; padding: var(--spacing-100); border-radius: var(--explore-radius); }
.relation-option strong { display: block; }
.relation-option span { color: var(--text-secondary); }
.relation-option:hover { background: var(--surface-hover); }
.relation-option[aria-current="true"] { color: var(--text-primary); background: var(--surface-secondary); box-shadow: inset 0 0 0 1px var(--border-primary); }
.relation-option[aria-current="true"] strong::after { content: ' ↗'; color: var(--accent); }
.relation-main { min-width: 0; }
.relation-toolbar { display: flex; align-items: center; gap: var(--spacing-200); min-height: 48px; margin-bottom: var(--spacing-300); color: var(--text-secondary); }
.relation-toolbar>button { min-height: 40px; padding: var(--spacing-75) var(--spacing-100); font: 600 var(--text-sm)/var(--line-sm) var(--sans); border: 1px solid var(--border-primary); border-radius: var(--explore-radius); color: var(--text-primary); }
.relation-toolbar>button:hover:not(:disabled) { background: var(--surface-hover); }
.relation-stats { margin-left: auto; font-variant-numeric: tabular-nums; }
.relation-stage { position: relative; isolation: isolate; }
.relation-wires { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--axis); pointer-events: none; z-index: 0; overflow: visible; }
.relation-wires path[data-edge] { stroke: var(--line); stroke-width: 1.25; fill: none; }
.relation-wires path.active { stroke: var(--accent); stroke-width: 1.75; }
.relation-columns { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr) minmax(0, 1fr); gap: var(--spacing-400); align-items: start; }
.lineage-column { position: relative; min-width: 0; }
.lineage-column>h2,.lineage-peers>h2 { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-100); margin-bottom: var(--spacing-200); color: var(--text-secondary); }
.lineage-column>h2 span,.lineage-peers>h2 span { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.lineage-list { display: flex; flex-direction: column; gap: var(--spacing-100); }
.lineage-node { position: relative; min-width: 0; border: 1px solid var(--border-primary); border-radius: var(--explore-radius); background: var(--surface-primary); }
.lineage-node>[data-center] { display: flex; flex-direction: column; align-items: start; gap: var(--spacing-75); width: 100%; padding: var(--spacing-200); text-align: left; border-radius: inherit; }
.lineage-node small { color: var(--text-secondary); }
.lineage-node strong { display: block; color: var(--text-primary); }
.lineage-node [data-center]>span { color: var(--text-secondary); }
.lineage-node:hover { background: var(--surface-secondary); }
.lineage-node.evidence-active { border-color: var(--accent); }
.lineage-node.evidence-active .evidence-trigger { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.lineage-node>.evidence-trigger { display: block; padding: var(--spacing-75) var(--spacing-200) var(--spacing-200); width: 100%; min-height: 40px; text-align: left; color: var(--text-secondary); }
.lineage-node>.evidence-trigger:hover { color: var(--text-primary); }
.lineage-focus {
  position: sticky;
  top: var(--spacing-300);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: start;
  gap: var(--spacing-300);
  margin-top: var(--spacing-400);
  min-height: 320px;
  padding: var(--spacing-400) var(--spacing-300);
  background: var(--surface-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--explore-radius);
}
.lineage-focus>small { color: var(--color, var(--accent)); }
.lineage-focus h2 { letter-spacing: -.04em; }
.lineage-focus p { color: var(--text-secondary); }
.lineage-focus>button { margin-top: auto; padding: var(--spacing-75) var(--spacing-100); min-height: 40px; border: 1px solid var(--action-primary); color: var(--action-inverted); background: var(--action-primary); border-radius: 4px; }
.lineage-focus>button:hover { opacity: .8; }
.lineage-peers { margin-top: var(--spacing-400); }
.lineage-peers>h2 { justify-content: start; gap: var(--spacing-100); }
.peer-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-100); }
.evidence-panel { margin-top: var(--spacing-400); padding: var(--spacing-300); background: var(--surface-secondary); border-radius: var(--explore-radius); scroll-margin-block: var(--spacing-300); }
.evidence-panel>p:first-child { color: var(--accent); }
.evidence-panel h3 { margin-top: var(--spacing-100); margin-bottom: var(--spacing-200); }
.evidence-panel>p:not(:first-child) { max-width: 65ch; color: var(--text-secondary); }
.evidence-panel>a { display: inline-block; margin-top: var(--spacing-200); padding-block: var(--spacing-75); text-decoration: underline; text-underline-offset: 4px; }
.evidence-panel>a:hover { color: var(--accent); }
.open-lineage { min-height: 32px; padding: var(--spacing-75); color: var(--text-secondary); font: 500 var(--text-xs)/var(--line-xs) var(--sans); text-decoration: underline; text-underline-offset: 3px; }
.open-lineage:hover { color: var(--accent); }
.agents { --color: var(--red); }
.protocols { --color: var(--blue); }
.decisions { --color: var(--green); }

/* A history of practice is read as dated entries, not a fourth model lane. */
.systems-controls { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-300); margin-bottom: var(--spacing-600); }
.systems-controls input[type="search"] { width: min(100%, 24rem); }
.systems-filters { display: flex; flex-wrap: wrap; gap: var(--spacing-75); }
.systems-filters>button { min-height: 44px; padding: var(--spacing-75) var(--spacing-100); border: 1px solid transparent; border-radius: var(--explore-radius); color: var(--text-secondary); font: 600 var(--text-sm)/var(--line-sm) var(--sans); }
.systems-filters>button:hover { background: var(--surface-hover); color: var(--text-primary); }
.systems-filters>button[aria-pressed="true"] { background: var(--surface-secondary); border-color: var(--border-primary); color: var(--text-primary); }
#systems-list { max-width: 76rem; }
.system-year { display: grid; grid-template-columns: minmax(8rem, .25fr) minmax(0, 1fr); gap: var(--spacing-600); align-items: start; margin-bottom: var(--spacing-700); }
.system-year>h2 { position: sticky; top: var(--spacing-300); color: var(--text-secondary); letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.system-entries { display: grid; gap: var(--spacing-200); }
.system-entry { display: grid; grid-template-columns: 4rem minmax(0, 1fr); align-items: start; gap: var(--spacing-300); padding: var(--spacing-300) var(--spacing-400) var(--spacing-400); border-radius: var(--explore-radius); background: var(--surface-secondary); }
.system-entry>time { padding-top: var(--spacing-50); font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--text-secondary); }
.system-copy { min-width: 0; }
.system-category { color: var(--color, var(--accent)); margin-bottom: var(--spacing-100); }
.system-copy h3 { margin-bottom: var(--spacing-200); letter-spacing: -.025em; }
.system-copy>p:not(.system-category) { max-width: 65ch; color: var(--text-secondary); }
.system-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--spacing-300); margin-top: var(--spacing-300); }
.system-actions button { min-height: 40px; padding-block: var(--spacing-75); text-decoration: underline; text-underline-offset: 4px; }
.system-actions button:hover { color: var(--accent); }
.explore-empty { display: grid; align-content: center; gap: var(--spacing-100); padding: var(--spacing-300); color: var(--text-secondary); background: var(--surface-secondary); border-radius: var(--explore-radius); min-height: 128px; }
.lineage-column .explore-empty { min-height: 160px; padding: var(--spacing-200); }
.explore-error { padding: var(--spacing-300); border: 1px solid var(--red); border-radius: var(--explore-radius); color: var(--text-primary); }
.explore-skeleton { min-height: 128px; border-radius: var(--explore-radius); background: var(--surface-secondary); animation: explore-loading 1500ms var(--motion-ease) infinite alternate; }

/* States use opacity/transform only; colors change immediately without paint animation. */
.view-switch button,.explore-view button,.explore-view a {
  transition: transform var(--motion-state) var(--motion-ease), opacity var(--motion-state) var(--motion-ease);
}
.view-switch button:active,.explore-view button:active:not(:disabled) { transform: translateY(1px); }
.view-switch button:focus-visible,.explore-view :is(button,a,input):focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.view-switch button:disabled,.explore-view button:disabled { opacity: .4; cursor: default; }
.view-panel.is-entering,.explore-view.is-entering { animation: explore-enter var(--motion-position) var(--motion-ease) both; }
.view-panel.is-leaving,.explore-view.is-leaving { animation: explore-leave var(--motion-state) var(--motion-ease) both; pointer-events: none; }
@keyframes explore-enter { from { opacity: 0; transform: translateY(var(--spacing-100)); } to { opacity: 1; transform: translateY(0); } }
@keyframes explore-leave { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(calc(-1 * var(--spacing-75))); } }
@keyframes explore-loading { from { opacity: .4; } to { opacity: .85; } }

/* User-requested identities share structure, with distinct reading textures. */
html[data-style="anthropic"] .explore-heading h1 { font-weight: 400; }
html[data-style="anthropic"] .lineage-focus h2 { font-weight: 400; }
html[data-style="anthropic"] .system-year>h2 { font-weight: 400; }
html[data-style="openai"] .view-switch { border-radius: 16px; padding: var(--spacing-75); }
html[data-style="openai"] .view-switch button { border-radius: 8px; }
html[data-style="openai"] .lineage-focus { background: var(--ink); color: var(--paper); border-color: var(--ink); }
html[data-style="openai"] .lineage-focus>small,html[data-style="openai"] .lineage-focus>p { color: var(--paper); }
html[data-style="openai"] .lineage-focus>small { opacity: .7; }
html[data-style="openai"] .lineage-focus>p { opacity: .8; }
html[data-style="openai"] .lineage-focus>button { background: var(--paper); color: var(--ink); border-color: var(--paper); border-radius: 8px; }
html[data-style="openai"] .explore-heading h1 { letter-spacing: -.055em; }
html[data-style="openai"] .system-year>h2 { color: var(--ink); }
html[data-style="terminal"] :is(.view-switch,.view-switch button,.lineage-node,.lineage-focus>button) { border-radius: 0; }
html[data-style="terminal"] .view-switch { border-style: dashed; }
html[data-style="terminal"] .view-switch button[aria-pressed="true"] { color: var(--paper); background: var(--accent); }
html[data-style="terminal"] .view-switch button[aria-pressed="true"]::before { content: '> '; }
html[data-style="terminal"] .explore-heading h1 { letter-spacing: -.06em; font-weight: 500; }
html[data-style="terminal"] .lineage-focus { border-color: var(--accent); }
html[data-style="terminal"] .lineage-focus>small::before { content: '[ '; }
html[data-style="terminal"] .lineage-focus>small::after { content: ' ]'; }
html[data-style="terminal"] .lineage-node { border-style: dashed; }
html[data-style="terminal"] .lineage-node.evidence-active { border-style: solid; }
html[data-style="terminal"] .relation-wires path[data-edge] { stroke-dasharray: 4 4; }
html[data-style="terminal"] .relation-wires path.active { stroke-dasharray: none; }
html[data-style="terminal"] .evidence-panel { border: 1px dashed var(--border-primary); }
html[data-style="terminal"] .system-entry { border: 1px solid var(--border-primary); background: var(--surface-primary); }
html[data-style="terminal"] .system-year>h2::before { content: './'; color: var(--accent); }

@media (max-width: 1200px) {
  .relation-workspace { grid-template-columns: 11rem minmax(0, 1fr); gap: var(--spacing-300); }
  .relation-columns { gap: var(--spacing-300); }
  .lineage-focus { padding: var(--spacing-300) var(--spacing-200); }
  .lineage-focus h2 { font-size: var(--text-3xl); line-height: var(--line-3xl); }
  html .edition { display: none; }
}
@media (max-width: 1000px) {
  .relation-workspace { grid-template-columns: 1fr; }
  .relation-picker { position: static; max-height: none; display: grid; grid-template-columns: 10rem minmax(0, 1fr); align-items: center; }
  .relation-picker input { grid-column: 2; }
  #relation-index { grid-column: 1/-1; flex-direction: row; padding: var(--spacing-50); }
  .relation-option { flex: 0 0 11rem; }
  .system-year { gap: var(--spacing-300); grid-template-columns: 6rem minmax(0, 1fr); }
  .system-entry { padding: var(--spacing-300); gap: var(--spacing-200); }
  .systems-controls { align-items: stretch; flex-direction: column; gap: var(--spacing-200); }
  .systems-controls input[type="search"] { width: 100%; }
  .explore-heading h1 { font-size: var(--text-4xl); line-height: var(--line-4xl); }
}
@media (max-width: 800px) {
  .relation-wires { display: none; }
  .relation-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lineage-focus { position: relative; top: auto; grid-column: 1/-1; grid-row: 1; min-height: 0; margin-top: 0; padding: var(--spacing-300); gap: var(--spacing-200); }
  .lineage-focus h2 { font-size: var(--text-4xl); line-height: var(--line-4xl); }
  .relation-toolbar { position: sticky; top: calc(-1 * var(--spacing-400)); z-index: 3; background: var(--paper); padding-block: var(--spacing-75); }
}
@media (max-width: 600px) {
  header { height: 112px; min-height: 112px; padding-top: var(--spacing-75); gap: var(--spacing-75); }
  html .brand { min-height: 44px; }
  html .header-actions { gap: var(--spacing-100); }
  html .header-actions { margin-top: 0; }
  html .header-actions>button { min-width: 44px; min-height: 44px; }
  html .header-actions>button:last-child { min-width: 44px; min-height: 44px; margin-top: 0; }
  html .appearance-controls { right: 0; bottom: var(--spacing-75); gap: var(--spacing-75); }
  html .header-actions .theme-toggle { min-width: 44px; min-height: 44px; height: 44px; }
  html .brand>span { display: none; }
  html .style-switch select { width: 120px; min-width: 120px; max-width: none; min-height: 44px; padding: var(--spacing-100) var(--spacing-300) var(--spacing-100) var(--spacing-100); }
  .open-lineage { min-height: 44px; }
  .view-switch { align-self: stretch; margin: var(--spacing-100) var(--spacing-200) 0; justify-content: stretch; }
  .view-switch button { flex: 1; padding: var(--spacing-75) var(--spacing-100); min-height: 44px; }
  .explore-view { padding: var(--spacing-400) var(--spacing-200) var(--spacing-600); }
  .explore-heading { display: block; margin-bottom: var(--spacing-300); }
  .explore-heading h1 { font-size: var(--text-3xl); line-height: var(--line-3xl); }
  .explore-heading p { font-size: var(--text-sm); line-height: var(--line-sm); margin-top: var(--spacing-100); }
  .explore-heading>#systems-count { display: block; margin-top: var(--spacing-200); }
  .relation-picker { grid-template-columns: 1fr; gap: var(--spacing-75); }
  .relation-picker input { grid-column: 1; font-size: var(--text-base); line-height: var(--line-base); }
  #relation-index { max-height: 96px; }
  .relation-option { flex-basis: 10rem; }
  .relation-toolbar { gap: var(--spacing-100); margin-bottom: var(--spacing-200); flex-wrap: wrap; }
  .relation-breadcrumb { display: none; }
  .relation-toolbar>button { min-height: 44px; }
  .relation-columns { grid-template-columns: 1fr; gap: var(--spacing-300); }
  .lineage-focus { padding: var(--spacing-300); }
  .lineage-focus h2 { font-size: var(--text-3xl); line-height: var(--line-3xl); }
  .lineage-focus>button { min-height: 44px; }
  .lineage-column .explore-empty { min-height: 96px; }
  .peer-list { grid-template-columns: 1fr; }
  .lineage-node>.evidence-trigger { min-height: 44px; }
  .lineage-peers,.evidence-panel { margin-top: var(--spacing-300); }
  .evidence-panel { padding: var(--spacing-200); }
  .evidence-panel>a { min-height: 44px; }
  .systems-controls { margin-bottom: var(--spacing-400); }
  .systems-controls input[type="search"] { font-size: var(--text-base); line-height: var(--line-base); }
  .systems-filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-75); }
  .systems-filters button { border-color: var(--border-primary); }
  .system-year { grid-template-columns: 1fr; gap: var(--spacing-200); margin-bottom: var(--spacing-500); }
  .system-year>h2 { position: static; font-size: var(--text-3xl); line-height: var(--line-3xl); }
  .system-entry { grid-template-columns: 1fr; gap: var(--spacing-100); padding: var(--spacing-200) var(--spacing-200) var(--spacing-300); }
  .system-entry time { padding-top: 0; }
  .system-copy h3 { font-size: var(--text-xl); line-height: var(--line-lg); }
  .system-actions { gap: var(--spacing-300); margin-top: var(--spacing-200); }
  .system-actions button { min-height: 44px; }
  html[data-style="openai"] .view-switch { padding: var(--spacing-50); border-radius: 12px; }
  html[data-style="terminal"] .view-switch button { padding-inline: var(--spacing-75); }
}
@media (max-width: 400px) {
  html .header-actions { gap: var(--spacing-75); }
  html .brand { flex-shrink: 0; }
}
@media (max-width: 350px) {
  html .brand svg { display: none; }
  html .header-actions { gap: var(--spacing-50); }
}
@media (max-height: 850px) {
  #timeline-view .lane-label p { display: none; }
}
@media (max-height: 680px) and (max-width: 600px) {
  body[data-view="timeline"] { min-height: 680px; overflow-y: auto; }
  #timeline-view .masthead { height: 80px; }
}
@media (prefers-reduced-motion: reduce) {
  .view-panel.is-entering,.explore-view.is-entering { animation: explore-fade-in var(--motion-state) var(--motion-ease) both; }
  .view-panel.is-leaving,.explore-view.is-leaving { animation: explore-fade-out var(--motion-state) var(--motion-ease) both; }
  .view-switch button:active,.explore-view button:active:not(:disabled) { transform: none; }
  .explore-skeleton { animation: none; }
}
@keyframes explore-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes explore-fade-out { from { opacity: 1; } to { opacity: 0; } }
@media (max-width:360px) {
  .view-switch button { padding-inline:var(--spacing-75); white-space:nowrap; }
}