@font-face {
  font-family: Instrument;
  src: url("/static/fonts/InstrumentSans.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}
/* Shared palette: quiet application chrome, a dark media stage, one action accent. */
:root {
  --canvas: #ffffff;
  --surface: #ffffff;
  --hover: #f0f8f5;
  --bg: var(--canvas);
  --raised: var(--surface);
  --line: #e2e7ec;
  --control-border: #a9b4bf;
  --text: #111722;
  --muted: #586575;
  --accent: #086b4c;
  --accent-hover: #055239;
  --accent-soft: #e9f7f1;
  --on-accent: #ffffff;
  --success: #286749;
  --warning: #865915;
  --danger: #a43232;
  --group-fill: #ffffff00;
  --shadow-color: #1d283314;
  --backdrop: #26313f66;
  --media-bg: #17191d;
  --media-text: #f4f5f7;
  --graph-line: #758294;
  --graph-related: #5b8475;
  --graph-grid: #ffffff00;
  color-scheme: light;
  font-family: Instrument, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}
button,
textarea,
select {
  font: inherit;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
button {
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}
button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
a {
  color: inherit;
  text-decoration: none;
}
h1,
h2,
h3,
p {
  margin: 0;
}
button img {
  pointer-events: none;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
[hidden] {
  display: none !important;
}
.icon {
  width: 22px;
  height: 22px;
  filter: none;
  flex-shrink: 0;
}
.sr-only,
.skip-link:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
.skip-link:focus {
  position: fixed;
  z-index: 30;
  background: var(--raised);
  padding: 12px;
}
.desktop-message {
  display: none;
}
.agent-shell {
  position: relative;
  height: 100dvh;
  min-height: 600px;
}
.studio-header {
  position: absolute;
  inset: 0 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 26px 0 30px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  z-index: 10;
}
.brand {
  font-size: 28px;
  font-weight: 760;
  letter-spacing: -1.5px;
}
.studio-title {
  padding-left: 24px;
  border-left: 1px solid var(--line);
  font-size: 17px;
  font-weight: 650;
  white-space: nowrap;
}
.studio-header > p {
  font-size: 13px;
  color: var(--muted);
}
.header-mode {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.open-source {
  display: flex;
  gap: 9px;
  align-items: center;
  min-height: 44px;
  font-size: 13px;
  white-space: nowrap;
}
.studio-rail {
  position: absolute;
  top: 60px;
  bottom: 0;
  left: 0;
  width: 64px;
  background: var(--surface);
  border-right: 1px solid var(--line);
  z-index: 10;
  display: flex;
  flex-direction: column;
}
.rail-button {
  width: 64px;
  height: 84px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  justify-content: center;
  border-left: 3px solid transparent;
  font-size: 12px;
  color: var(--muted);
}
.rail-button.active {
  border-color: var(--accent);
  background: var(--raised);
  color: var(--text);
}
.rail-docs {
  margin-top: auto;
}
.rail-button:hover {
  background: var(--raised);
}
.canvas-viewport {
  position: absolute;
  left: 64px;
  top: 60px;
  right: 0;
  bottom: 0;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
  outline-offset: -3px !important;
}
.canvas-viewport.panning {
  cursor: grabbing;
}
#canvas-links {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
#canvas-plane {
  position: absolute;
  inset: 0;
  transform-origin: 0 0;
  pointer-events: none;
}
#messages {
  position: relative;
  pointer-events: none;
}
.canvas-topbar {
  position: absolute;
  left: 88px;
  right: 24px;
  top: 82px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  z-index: 5;
  pointer-events: none;
}
.canvas-topbar > * {
  pointer-events: auto;
}
.source-tile {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 310px;
  min-height: 76px;
  padding: 12px;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 7px;
  text-align: left;
}
.source-tile > img:first-child {
  width: 84px;
  height: 48px;
  object-fit: cover;
  border-radius: 3px;
}
.source-tile .source-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  flex: 1;
}
.source-item strong {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.source-item span {
  font-size: 12px;
  color: var(--muted);
}
.source-tile > .icon {
  width: 19px;
}
.canvas-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}
.outline-button,
select {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  padding: 0 14px;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.outline-button:hover,
select:hover {
  background: var(--raised);
}
select {
  max-width: 132px;
}
.outline-button .icon {
  width: 18px;
}
.empty-state {
  position: absolute;
  left: 12%;
  top: 30%;
  max-width: 660px;
  cursor: auto;
}
.eyebrow {
  font-size: 13px;
  color: var(--muted);
}
.task-intro h1 {
  font-size: 38px;
  letter-spacing: -1px;
  line-height: 1.3;
  margin: 16px 0;
}
.task-intro > p {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
}
.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}
.suggestions button {
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.suggestions button:first-child {
  border-color: var(--accent);
}
.suggestions button:hover {
  background: var(--raised);
}
.turn {
  position: absolute;
  width: 330px;
  background: var(--surface);
  border: 1px solid var(--control-border);
  border-radius: 7px;
  padding: 18px;
  pointer-events: auto;
  cursor: default;
}
.turn.selected {
  border: 2px solid var(--accent);
  padding: 17px;
}
.card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: -6px -6px 6px;
  gap: 6px;
}
.card-drag {
  flex: 1;
  min-width: 0;
  text-align: left;
  color: var(--muted);
  font-size: 12px;
  min-height: 38px;
  cursor: grab;
  touch-action: none;
}
.card-drag:active {
  cursor: grabbing;
}
.card-select {
  min-height: 38px;
  font-size: 12px;
  color: var(--muted);
}
.card-select:hover {
  color: var(--accent);
}
.question-bubble {
  font-size: 19px;
  font-weight: 650;
  line-height: 1.5;
  overflow-wrap: anywhere;
  margin-bottom: 18px;
}
.answer-label {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 5px;
}
.fixture-tag {
  font-size: 11px;
}
.answer-text {
  font-size: 16px;
  line-height: 1.65;
  overflow-wrap: anywhere;
  margin-bottom: 16px;
}
.answer-status {
  display: none;
}
.answer-status.partial,
.answer-status.no_result,
.answer-status.error {
  display: inline-block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 14px;
}
.answer-status.partial {
  color: var(--accent);
}
.event {
  display: flex;
  flex-direction: column;
}
.event-heading,
.support-label,
.event-summary {
  display: none;
}
.event-toolbar {
  order: 2;
}
.seek-button {
  color: var(--accent);
  font-size: 13px;
  min-height: 38px;
  text-align: left;
  padding: 6px 0;
}
.evidence-grid {
  width: 100%;
}
.evidence-button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  text-align: left;
}
.evidence-button > img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.evidence-button.selected {
  border-color: var(--accent);
}
.evidence-caption {
  position: absolute;
  bottom: 7px;
  right: 7px;
  padding: 3px 6px;
  background: var(--shadow-color);
  font-size: 12px;
}
.evidence-caption > span {
  display: none;
}
.unresolved {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  margin: 10px 0;
}
.unresolved strong {
  display: none;
}
.trace-note {
  display: none;
}
.response-details {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}
.response-details > summary {
  min-height: 34px;
  cursor: pointer;
  display: list-item;
  padding: 8px 0;
}
.response-details > summary:hover {
  color: var(--text);
}
.response-details > button.evidence-button {
  margin: 12px 0;
}
.response-details pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 11px;
  max-height: 220px;
  overflow: auto;
}
.response-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  margin-top: 7px;
  padding-top: 7px;
}
.text-button {
  color: var(--muted);
  font-size: 12px;
  min-height: 36px;
}
.text-button:hover {
  color: var(--accent);
}
.response-actions > .text-button {
  color: var(--accent);
  text-align: left;
}
.card-followup {
  margin-left: auto;
}
.evidence-viewer {
  position: absolute;
  top: 148px;
  right: 24px;
  width: 350px;
  max-height: calc(100dvh - 345px);
  overflow: auto;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  z-index: 7;
}
.viewer-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.viewer-heading h2 {
  font-size: 16px;
  font-weight: 650;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
}
.viewer-source {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  gap: 10px;
  margin: 6px 0 12px;
}
.viewer-source > span:first-child {
  overflow-wrap: anywhere;
  min-width: 0;
}
.player-wrap {
  position: relative;
}
.player-wrap video {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--line);
  border-radius: 4px;
}
.player-wrap > span {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 11px;
  padding: 3px 5px;
  background: var(--shadow-color);
  pointer-events: none;
}
.player-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 11px;
  color: var(--muted);
  margin-top: 9px;
  line-height: 1.6;
}
#video-meta {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 6px;
}
.timeline-section {
  margin-top: 14px;
  font-size: 11px;
  color: var(--muted);
}
.timeline {
  position: relative;
  display: flex;
  margin-top: 8px;
  border-top: 2px solid var(--line);
}
#playhead {
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
}
.chapter {
  width: 33.33%;
  min-height: 30px;
  font-size: 11px;
}
.chapter.active {
  color: var(--accent);
}
.demo-details {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 8px;
}
.demo-details summary {
  cursor: pointer;
  min-height: 32px;
  padding: 7px 0;
}
.local-note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin: 12px 0;
}
.restore-button {
  color: var(--accent);
  min-height: 44px;
  font-size: 13px;
}
.composer-area {
  position: absolute;
  z-index: 8;
  bottom: 24px;
  left: calc(50% + 32px);
  transform: translateX(-50%);
  width: min(720px, calc(100% - 480px));
}
.composer-area form {
  padding: 12px 16px;
  background: var(--raised);
  border: 1px solid var(--control-border);
  border-radius: 8px;
}
.composer-area:focus-within form {
  border-color: var(--muted);
}
.composer-context {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
  min-height: 27px;
  margin-bottom: 5px;
}
.composer-context label {
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.composer-context .text-button {
  font-size: 11px;
  min-height: 27px;
  flex-shrink: 0;
}
.composer-area textarea {
  resize: none;
  display: block;
  width: 100%;
  height: 48px;
  background: none;
  border: 0;
  padding: 5px 0;
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  outline-offset: 0;
}
.composer-area textarea::placeholder {
  color: var(--muted);
}
.composer-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 5px;
}
.composer-tools > span {
  color: var(--muted);
  font-size: 11px;
}
.send-button {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  width: 42px;
  height: 42px;
  border-radius: 50%;
}
.send-button .icon {
  filter: none;
  width: 24px;
  height: 24px;
}
.form-notice {
  padding: 12px 16px;
  margin-bottom: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--raised);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
.canvas-footer {
  position: absolute;
  z-index: 5;
  left: 88px;
  right: 24px;
  bottom: 24px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  pointer-events: none;
}
.canvas-footer > * {
  pointer-events: auto;
}
#canvas-hint {
  color: var(--muted);
  font-size: 11px;
  margin-bottom: 56px;
}
.view-controls {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.view-controls button {
  min-height: 40px;
  min-width: 36px;
  font-size: 12px;
}
.view-controls button:hover {
  background: var(--raised);
}
#fit-canvas {
  padding: 0 12px;
  border-left: 1px solid var(--line);
}
#zoom-in .icon {
  width: 15px;
  height: 15px;
}
.conversation-history {
  position: absolute;
  bottom: 24px;
  left: 88px;
  z-index: 9;
  width: 240px;
  font-size: 12px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.conversation-history summary {
  padding: 12px;
  cursor: pointer;
  min-height: 40px;
}
.conversation-history nav {
  display: flex;
  flex-direction: column;
  max-height: 280px;
  overflow: auto;
}
.conversation-history > p,
.conversation-history > span {
  display: block;
  padding: 12px;
}
.history-task {
  text-align: left;
  padding: 10px 12px;
  min-height: 38px;
  font-size: 13px;
}
.history-task.active {
  color: var(--accent);
  background: var(--raised);
}
@media (max-width: 1250px) {
  .studio-header > p {
    display: none;
  }
  .composer-area {
    width: 600px;
    bottom: 75px;
  }
  .evidence-viewer {
    width: 300px;
  }
  .canvas-actions {
    gap: 5px;
  }
  .canvas-topbar {
    left: 82px;
    right: 18px;
  }
  .source-tile {
    width: 280px;
  }
  .canvas-footer {
    left: 82px;
    right: 18px;
  }
}
@media (max-height: 790px) {
  .composer-area {
    bottom: 65px;
  }
  .canvas-footer {
    bottom: 14px;
  }
  .evidence-viewer {
    max-height: calc(100dvh - 250px);
  }
  .conversation-history {
    bottom: 14px;
  }
  #canvas-hint {
    display: none;
  }
}
@media (max-width: 850px) {
  .agent-shell {
    display: none;
  }
  .desktop-message {
    display: block;
    padding: 12vh 8vw;
  }
  .desktop-message h1 {
    font-size: 32px;
    margin-bottom: 20px;
  }
  .desktop-message p {
    color: var(--muted);
    line-height: 1.8;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}

/* Canvas density and non-overlapping evidence dock, checked against selected concept. */
.card-drag,
.card-select {
  min-height: 28px;
}
.question-bubble {
  margin-bottom: 12px;
}
.answer-text {
  margin-bottom: 12px;
}
.fixture-tag {
  display: none;
}
.seek-button {
  min-height: 30px;
}
.response-details > summary {
  min-height: 28px;
  padding: 5px 0;
}
.response-actions {
  padding-top: 0;
  margin-top: 6px;
}
.response-actions .text-button {
  min-height: 32px;
}
.turn[data-status="partial"] {
  width: 300px;
}
.turn[data-status="partial"] .answer-status {
  display: none;
}
.evidence-viewer {
  top: 80px;
  max-height: 370px;
}
.agent-shell:has(.evidence-viewer:not([hidden])) .canvas-actions {
  margin-right: 370px;
}
.composer-area {
  width: min(660px, calc(100% - 500px));
}
.composer-area textarea:focus-visible {
  outline: none;
}
.composer-area:focus-within form {
  border-color: var(--accent);
}
@media (max-width: 1250px) {
  .agent-shell:has(.evidence-viewer:not([hidden])) .canvas-actions {
    margin-right: 320px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .source-tile {
    width: 260px;
  }
  .composer-area {
    width: 600px;
  }
  .evidence-viewer {
    max-height: 350px;
  }
  .canvas-actions select {
    width: 110px;
  }
  .canvas-actions .outline-button {
    padding: 0 10px;
  }
}

.turn[data-status="partial"] .card-drag {
  color: var(--accent);
}

/* Review demo library: routes stay separate from the investigation workspace. */
#demo-library {
  width: min(880px, calc(100vw - 80px));
  max-height: calc(100dvh - 80px);
  margin: auto;
  padding: 32px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 30px 100px var(--shadow-color);
}
#demo-library::backdrop {
  background: var(--backdrop);
}
.demo-library-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
}
.demo-library-heading h2 {
  margin: 10px 0 0;
  font-size: 28px;
  letter-spacing: -0.8px;
}
.demo-library-intro {
  color: var(--muted);
  line-height: 1.7;
  margin: 18px 0 26px;
  max-width: 650px;
}
.demo-scenarios {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.demo-scenario {
  padding: 20px;
  text-align: left;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.demo-scenario:hover {
  border-color: var(--accent);
  background: var(--hover);
}
.demo-scenario-number {
  color: var(--accent);
  font-size: 12px;
  margin-right: 12px;
}
.demo-scenario strong {
  font-size: 17px;
}
.demo-scenario p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  margin: 12px 0 18px;
}
.demo-scenario-focus {
  font-size: 12px;
  color: var(--muted);
}
.demo-library-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  margin-top: 22px;
}
#demo-library-empty {
  color: var(--accent);
  margin-top: 18px;
  padding: 8px 0;
}
.demo-current {
  font-size: 12px;
  color: var(--muted);
}
.event-cluster {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}
.event-cluster .seek-button {
  font-size: 12px;
}
.event-cluster .evidence-caption {
  font-size: 11px;
  bottom: 3px;
  right: 3px;
  padding: 2px 4px;
}
.evidence-grid:has(> .evidence-button:nth-child(2)) {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.evidence-grid:has(> .evidence-button:nth-child(3)) {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.evidence-grid:has(> .evidence-button:nth-child(2)) .evidence-caption {
  font-size: 11px;
  bottom: 3px;
  right: 3px;
}
@media (max-width: 1250px) {
  .demo-current {
    display: none;
  }
}