:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f3f2ee;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --success-ink: #006300;
  --critical-ink: #b42323;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
  --other: #b8b6ae;
  --branch: #a9a79f;
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --band-1: rgba(42, 120, 214, 0.16);
  --band-2: rgba(42, 120, 214, 0.08);
  --diff-add: rgba(12, 163, 12, 0.12);
  --diff-del: rgba(208, 59, 59, 0.12);
  --seq-0: #cde2fb;
  --seq-1: #9ec5f4;
  --seq-2: #6da7ec;
  --seq-3: #3987e5;
  --seq-4: #256abf;
  --seq-5: #184f95;
  --seq-6: #0d366b;
  --empty: #f0efec;
  --seq-ink-0: #0b0b0b;
  --seq-ink-1: #0b0b0b;
  --seq-ink-2: #0b0b0b;
  --seq-ink-3: #0b0b0b;
  --seq-ink-4: #ffffff;
  --seq-ink-5: #ffffff;
  --seq-ink-6: #ffffff;
  --shadow: 0 8px 28px rgba(11, 11, 11, 0.14);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #232321;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --success-ink: #0ca30c;
    --critical-ink: #e66767;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --other: #5c5b56;
    --branch: #6b6a64;
    --band-1: rgba(57, 135, 229, 0.24);
    --band-2: rgba(57, 135, 229, 0.12);
    --diff-add: rgba(12, 163, 12, 0.2);
    --diff-del: rgba(230, 103, 103, 0.2);
    --seq-0: #184f95;
    --seq-1: #1c5cab;
    --seq-2: #256abf;
    --seq-3: #3987e5;
    --seq-4: #6da7ec;
    --seq-5: #9ec5f4;
    --seq-6: #cde2fb;
    --empty: #2c2c2a;
    --seq-ink-0: #ffffff;
    --seq-ink-1: #ffffff;
    --seq-ink-2: #ffffff;
    --seq-ink-3: #0b0b0b;
    --seq-ink-4: #0b0b0b;
    --seq-ink-5: #0b0b0b;
    --seq-ink-6: #0b0b0b;
    --shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #232321;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --success-ink: #0ca30c;
  --critical-ink: #e66767;
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
  --other: #5c5b56;
  --branch: #6b6a64;
  --band-1: rgba(57, 135, 229, 0.24);
  --band-2: rgba(57, 135, 229, 0.12);
  --diff-add: rgba(12, 163, 12, 0.2);
  --diff-del: rgba(230, 103, 103, 0.2);
  --seq-0: #184f95;
  --seq-1: #1c5cab;
  --seq-2: #256abf;
  --seq-3: #3987e5;
  --seq-4: #6da7ec;
  --seq-5: #9ec5f4;
  --seq-6: #cde2fb;
  --empty: #2c2c2a;
  --seq-ink-0: #ffffff;
  --seq-ink-1: #ffffff;
  --seq-ink-2: #ffffff;
  --seq-ink-3: #0b0b0b;
  --seq-ink-4: #0b0b0b;
  --seq-ink-5: #0b0b0b;
  --seq-ink-6: #0b0b0b;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
}

h1 {
  font-size: 18px;
}

h2 {
  font-size: 16px;
  margin-bottom: 4px;
}

h3 {
  font-size: 14px;
}

button,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

.ghost {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
}

.ghost:hover,
.ghost:focus-visible {
  background: var(--surface-2);
}

:focus-visible {
  outline: 2px solid var(--series-1);
  outline-offset: 2px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 16px;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar-title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.topbar-title h1 {
  overflow-wrap: anywhere;
}

.topbar-actions {
  margin-left: auto;
}

.meta {
  margin: 0;
  color: var(--ink-2);
  font-size: 13px;
  flex-basis: 100%;
  order: 3;
  overflow-wrap: anywhere;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 12px;
  white-space: nowrap;
}

.layout {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 24px;
  padding: 0 24px 48px;
}

.sidenav {
  position: sticky;
  top: 90px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 16px;
}

.sidenav a {
  color: var(--ink-2);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 6px;
}

.sidenav a:hover,
.sidenav a:focus-visible {
  background: var(--surface-2);
  color: var(--ink);
}

main {
  min-width: 0;
}

.filters {
  position: sticky;
  top: 72px;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 12px 0;
  background: var(--page);
}

.filters label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-2);
}

.filters select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  max-width: 220px;
}

.filters-note {
  color: var(--muted);
  font-size: 12px;
}

section {
  margin-top: 28px;
}

.section-note {
  margin: 0 0 10px;
  color: var(--ink-2);
  font-size: 13px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 12px;
}

.scroll-x {
  overflow-x: auto;
}

.card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  margin-bottom: 8px;
}

.card-head .ghost {
  margin-left: auto;
  font-size: 12px;
}

.subtle {
  color: var(--muted);
  font-size: 12px;
}

.warning-list {
  margin: 8px 0 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--warning);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink-2);
  font-size: 13px;
}

.warning-list summary {
  cursor: pointer;
}

.warning-list ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 12px;
}

.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  min-width: 0;
}

.tile-label {
  color: var(--ink-2);
  font-size: 12px;
}

.tile-value {
  font-size: 24px;
  font-weight: 600;
  margin-top: 2px;
  overflow-wrap: anywhere;
}

.tile-delta {
  font-size: 12px;
  color: var(--ink-2);
  margin-top: 2px;
}

.up {
  color: var(--success-ink);
}

.down {
  color: var(--critical-ink);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 4px 0 8px;
  color: var(--ink-2);
  font-size: 12px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.key-line {
  display: inline-block;
  width: 16px;
  height: 2px;
  border-radius: 1px;
}

.key-dash {
  display: inline-block;
  width: 16px;
  border-top: 2px dashed var(--ink-2);
}

.key-dash.meta-key {
  border-top: 3px dotted var(--ink);
}

.meta-change {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2.5;
  stroke-dasharray: 0.5 5;
  stroke-linecap: round;
}

.meta-change-mark {
  fill: var(--ink);
}

.meta-rows {
  display: grid;
  gap: 2px;
}

.meta-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  gap: 8px;
}

@media (max-width: 560px) {
  .meta-row {
    grid-template-columns: 1fr;
  }
}

.key-box {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
}

.status-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
  color: #0b0b0b;
  flex: none;
}

.status-icon.keep,
.status-icon.baseline {
  background: var(--good);
}

.status-icon.revert {
  background: var(--serious);
}

.status-icon.undecided {
  background: var(--warning);
}

.status-icon.abandoned {
  background: var(--other);
}

.status-icon.rejected,
.status-icon.no_submission {
  background: var(--critical);
  color: #ffffff;
}

.status-icon.pending,
.status-icon.running {
  background: transparent;
  border: 2px solid var(--muted);
  color: var(--muted);
}

.status-icon.baseline {
  background: var(--ink-2);
  color: var(--surface);
}

.outcome {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

svg {
  display: block;
  overflow: visible;
}

svg text {
  fill: var(--muted);
  font-size: 11px;
}

.chart-wrap {
  position: relative;
  width: 100%;
}

.gridline {
  stroke: var(--grid);
  stroke-width: 1;
}

.axisline {
  stroke: var(--axis);
  stroke-width: 1;
}

.lineage {
  fill: none;
  stroke: var(--series-1);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.branch {
  fill: none;
  stroke: var(--branch);
  stroke-width: 1.5;
}

.threshold {
  fill: none;
  stroke: var(--ink-2);
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
}

.band-1 {
  fill: var(--band-1);
}

.band-2 {
  fill: var(--band-2);
}

.dot {
  stroke: var(--surface);
  stroke-width: 2;
}

.dot.keep,
.dot.baseline {
  fill: var(--series-1);
}

.dot.revert {
  fill: var(--serious);
}

.dot.undecided {
  fill: var(--warning);
}

.dot.abandoned {
  fill: var(--other);
}

.dot.pending {
  fill: var(--surface);
  stroke: var(--muted);
}

.dot.rejected {
  fill: var(--critical);
}

.hit {
  fill: transparent;
  cursor: pointer;
}

.hit:focus {
  outline: none;
}

.hit:focus-visible + .focus-ring,
.focus-ring.active {
  stroke: var(--ink);
}

.focus-ring {
  fill: none;
  stroke: transparent;
  stroke-width: 1.5;
  pointer-events: none;
}

.end-label {
  fill: var(--ink-2);
  font-size: 12px;
}

.leader {
  stroke: var(--axis);
  stroke-width: 1;
}

.seg-model {
  fill: var(--series-1);
}

.seg-tool {
  fill: var(--series-2);
}

.seg-hook {
  fill: var(--series-3);
}

.seg-background {
  fill: var(--series-4);
}

.seg-other {
  fill: var(--other);
}

.bg-model {
  background: var(--series-1);
}

.bg-tool {
  background: var(--series-2);
}

.bg-hook {
  background: var(--series-3);
}

.bg-background {
  background: var(--series-4);
}

.bg-other {
  background: var(--other);
}

.bg-lineage {
  background: var(--series-1);
}

.bg-canary {
  background: var(--series-2);
}

.bg-control {
  background: var(--other);
}

.canary-line {
  fill: none;
  stroke: var(--series-2);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.canary-control {
  fill: none;
  stroke: var(--other);
  stroke-width: 1.5;
}

.dot.canary {
  fill: var(--series-2);
}

.bg-branch {
  background: var(--branch);
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
}

th,
td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--grid);
  vertical-align: top;
}

th {
  color: var(--ink-2);
  font-weight: 600;
  white-space: nowrap;
  position: sticky;
  top: 0;
  background: var(--surface);
}

th.sortable {
  cursor: pointer;
  user-select: none;
}

th.sortable:hover {
  color: var(--ink);
}

td.num,
th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

tr.clickable {
  cursor: pointer;
}

tr.clickable:hover td,
tr.clickable:focus-visible td {
  background: var(--surface-2);
}

tr.kept td:first-child {
  box-shadow: inset 3px 0 0 var(--series-1);
}

.hypothesis {
  max-width: 420px;
  min-width: 220px;
  color: var(--ink);
}

.clamp {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mono {
  font-family: var(--mono);
  font-size: 12px;
}

.timeline td.cell {
  text-align: center;
  min-width: 52px;
  padding: 4px;
}

.timeline .mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-weight: 700;
  font-family: var(--mono);
  background: var(--surface-2);
  color: var(--ink);
}

.timeline .mark.keep {
  background: rgba(12, 163, 12, 0.18);
}

.timeline .mark.revert {
  background: rgba(236, 131, 90, 0.22);
}

.timeline .mark.undecided {
  background: rgba(250, 178, 25, 0.24);
}

.timeline .mark.rejected {
  background: rgba(208, 59, 59, 0.2);
}

.kind {
  display: inline-block;
  padding: 0 6px;
  border-radius: 4px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--ink-2);
  font-size: 11px;
  margin-right: 6px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.chip {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  color: var(--ink-2);
}

.chip[aria-pressed="true"] {
  background: var(--ink);
  color: var(--surface);
  border-color: var(--ink);
}

.heat {
  border-collapse: separate;
  border-spacing: 2px;
  width: auto;
}

.heat td,
.heat th {
  border: none;
  padding: 0;
}

.heat th {
  font-weight: 500;
  font-size: 12px;
  padding: 0 6px;
}

.heat th.row {
  text-align: right;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.heat td {
  width: 56px;
  min-width: 56px;
  height: 30px;
  border-radius: 4px;
  text-align: center;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  cursor: default;
}

.heat td.missing {
  background: var(--empty);
  color: var(--muted);
}

.heat td.state {
  width: auto;
  padding: 0 6px;
  font-size: 10px;
  white-space: nowrap;
}

.drawer td.mono,
.drawer td.nowrap {
  white-space: nowrap;
}

.s0 {
  background: var(--seq-0);
  color: var(--seq-ink-0);
}

.s1 {
  background: var(--seq-1);
  color: var(--seq-ink-1);
}

.s2 {
  background: var(--seq-2);
  color: var(--seq-ink-2);
}

.s3 {
  background: var(--seq-3);
  color: var(--seq-ink-3);
}

.s4 {
  background: var(--seq-4);
  color: var(--seq-ink-4);
}

.s5 {
  background: var(--seq-5);
  color: var(--seq-ink-5);
}

.s6 {
  background: var(--seq-6);
  color: var(--seq-ink-6);
}

.band-legend {
  background: var(--band-1);
}

.heat td:hover,
.heat td:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: -1px;
}

.scale {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 11px;
}

.scale-bar {
  display: flex;
  height: 10px;
  width: 160px;
  border-radius: 3px;
  overflow: hidden;
}

.scale-bar span {
  flex: 1;
}

.heatmap-block {
  margin-bottom: 16px;
}

.gallery {
  border-collapse: separate;
  border-spacing: 8px;
  width: auto;
}

.gallery td,
.gallery th {
  border: none;
  padding: 0;
}

.gallery th {
  font-size: 12px;
  font-weight: 500;
}

.gallery th.row {
  text-align: right;
  vertical-align: middle;
  max-width: 160px;
  padding-right: 4px;
}

.shot {
  display: block;
  width: 192px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface-2);
  padding: 0;
  text-align: left;
}

.shot img {
  display: block;
  width: 192px;
  height: 120px;
  object-fit: cover;
  object-position: top;
}

.shot .shot-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 192px;
  height: 120px;
  color: var(--muted);
  font-size: 12px;
  padding: 8px;
  text-align: center;
}

.shot .shot-caption {
  display: block;
  padding: 4px 6px;
  font-size: 11px;
  color: var(--ink-2);
  border-top: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

.iteration-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 12px;
}

.iteration-card header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  margin-bottom: 8px;
}

.iteration-card .facts {
  color: var(--ink-2);
  font-size: 12px;
}

.prose {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 6px 0;
}

details > summary {
  cursor: pointer;
  color: var(--ink-2);
}

.messages {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  max-height: 480px;
  overflow-y: auto;
  border-top: 1px solid var(--grid);
}

.messages li {
  padding: 6px 0;
  border-bottom: 1px solid var(--grid);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.messages li.thinking {
  color: var(--ink-2);
  font-style: italic;
}

.messages li.tool {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-2);
}

.messages .who {
  display: inline-block;
  min-width: 64px;
  color: var(--muted);
  font-style: normal;
  font-family: inherit;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  width: min(760px, 100vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  transform: translateX(105%);
  transition: transform 0.18s ease;
  overflow-y: auto;
  padding: 16px 20px 40px;
}

.drawer.open {
  transform: none;
}

.drawer-head {
  display: flex;
  align-items: center;
  gap: 12px;
  position: sticky;
  top: -16px;
  background: var(--surface);
  padding: 8px 0;
  margin-bottom: 8px;
  z-index: 1;
}

.drawer-head h2 {
  margin: 0;
  overflow-wrap: anywhere;
}

.drawer-head .ghost {
  margin-left: auto;
}

.drawer h3 {
  margin: 18px 0 6px;
}

.kv {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 4px 16px;
  margin: 0;
}

.kv dt {
  color: var(--ink-2);
}

.kv dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.diff {
  margin: 6px 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: auto;
  max-height: 520px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
}

.diff div {
  white-space: pre;
  padding: 0 10px;
  min-height: 1.5em;
}

.diff .add {
  background: var(--diff-add);
}

.diff .del {
  background: var(--diff-del);
}

.diff .hunk {
  color: var(--muted);
  background: var(--surface-2);
}

.diff-file {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-2);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  background: rgba(0, 0, 0, 0.78);
}

.lightbox[hidden] {
  display: none;
}

.lightbox figure {
  margin: 0;
  max-width: 100%;
  max-height: 88vh;
  overflow: auto;
}

.lightbox img {
  display: block;
  max-width: min(1280px, 100%);
  height: auto;
  border-radius: 6px;
}

.lightbox figcaption {
  color: #ffffff;
  font-size: 13px;
  margin-top: 8px;
}

.lightbox .ghost {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}

.lightbox-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 12px;
  color: #ffffff;
  font-size: 13px;
}

.lightbox-position {
  min-width: 160px;
  text-align: center;
}

.lightbox-repeats {
  display: inline-flex;
  gap: 4px;
}

.lightbox .ghost:hover,
.lightbox .ghost:focus-visible {
  background: rgba(255, 255, 255, 0.16);
}

.lightbox :focus-visible {
  outline-color: #ffffff;
}

.lightbox .ghost[aria-pressed="true"] {
  background: #ffffff;
  color: #0b0b0b;
}

.lightbox .ghost:disabled {
  opacity: 0.4;
  cursor: default;
}

.lightbox-empty {
  color: #ffffff;
  min-width: min(640px, 80vw);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  margin: 0;
}

.lightbox-empty[hidden] {
  display: none;
}

.tooltip {
  position: fixed;
  z-index: 60;
  max-width: 340px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-size: 12px;
  pointer-events: none;
}

.tooltip .tt-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.tooltip .tt-label {
  color: var(--ink-2);
}

.tooltip .tt-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}

.tooltip .tt-text {
  margin-top: 4px;
  color: var(--ink-2);
  overflow-wrap: anywhere;
}

.empty-state {
  color: var(--muted);
  padding: 12px 0;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    padding: 0 16px 40px;
  }

  .topbar {
    padding: 10px 16px;
  }

  .sidenav {
    position: static;
    flex-direction: row;
    overflow-x: auto;
    padding-top: 8px;
  }

  .sidenav a {
    white-space: nowrap;
  }

  .filters {
    top: 0;
    position: static;
  }

  .hypothesis {
    min-width: 180px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .drawer {
    transition: none;
  }
}

@media print {
  .topbar,
  .filters,
  .sidenav,
  .drawer,
  .tooltip {
    position: static;
  }
}

/* Experiment timeline: one band per Study, the selected one tinted. */
.segment-band {
  fill: var(--surface-2);
  opacity: 0.6;
}

.segment-band.current {
  fill: var(--band-2);
  opacity: 1;
}

.connector {
  fill: none;
  stroke: var(--series-1);
  stroke-width: 1.5;
  stroke-dasharray: 2 3;
}

.bg-connector {
  background: repeating-linear-gradient(90deg, var(--series-1) 0 2px, transparent 2px 5px);
}

.segment-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.segment-tab {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 13px;
}

.segment-tab.current {
  border-color: var(--series-1);
  color: var(--ink);
  background: var(--band-2);
}

.change-card {
  margin-top: 12px;
}

.badge.warn {
  border-color: var(--warning);
  color: var(--ink);
}

/* Change cards: chips, rule bars and the starting-point lineage. */
.change-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 8px 0;
}

.change-chip {
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--ink-2);
}

.change-chip.changed {
  border-color: var(--series-1);
  color: var(--ink);
  background: var(--band-2);
}

.change-chip.warn {
  border-color: var(--warning);
  color: var(--ink);
}

.change-chip.same {
  color: var(--muted);
}

.change-lede {
  margin: 6px 0 10px;
  color: var(--ink-2);
}

.change-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.change-panel h4 {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--ink-2);
}

.rule-bars,
.start-diagram {
  width: 100%;
  height: auto;
  max-width: 520px;
}

.rule-label,
.start-label {
  font-size: 12px;
  fill: var(--ink-2);
}

.start-label.strong {
  fill: var(--ink);
  font-weight: 600;
}

.rule-before {
  fill: var(--other);
}

.rule-after {
  fill: var(--series-1);
}

.rule-value {
  font-size: 11px;
  fill: var(--muted);
}

.rule-value.after {
  fill: var(--ink);
}

.start-ring {
  fill: none;
  stroke: var(--series-1);
  stroke-width: 2;
}

.start-target {
  fill: var(--band-2);
  stroke: var(--series-1);
}

.start-arrow {
  fill: none;
  stroke: var(--series-1);
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}

.start-arrowhead {
  fill: var(--series-1);
}

.change-note summary {
  cursor: pointer;
  color: var(--ink-2);
  font-size: 13px;
}

.rule-grid {
  display: grid;
  grid-template-columns: minmax(120px, auto) 1fr 1fr;
  gap: 6px 12px;
  align-items: center;
  font-size: 13px;
}

.rule-name {
  color: var(--ink-2);
}

.rule-cell {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.rule-bar {
  display: inline-block;
  height: 10px;
  max-width: 70%;
  border-radius: 3px;
  background: var(--other);
}

.rule-bar.after {
  background: var(--series-1);
}

.rule-text {
  color: var(--ink);
  white-space: nowrap;
}

.rule-text.muted {
  color: var(--muted);
}

.start-diagram .start-label,
.start-diagram .rule-label {
  font-size: 14px;
}

/* Experiment: the earlier-candidates reference panel of a change card. */
.transfer-chart {
  width: 100%;
  max-width: 420px;
  height: auto;
}

.transfer-bar {
  fill: var(--series-1);
}

.transfer-bar.negative {
  fill: var(--serious);
}

.transfer-note {
  margin: 4px 0 0;
  font-size: 12px;
}

.meta-change-name {
  fill: var(--ink);
  font-size: 11px;
  font-weight: 600;
}

.meta-key-list {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  color: var(--ink-2);
}

.meta-key-list li {
  margin: 2px 0;
}

.meta-key-name {
  font-weight: 600;
  color: var(--ink);
}