:root {
  color-scheme: light;
  --ink: #171814;
  --muted: #686a62;
  --paper: #f6f3eb;
  --card: #fffdf8;
  --line: #ded9ce;
  --legacy: #297f90;
  --hybrid: #e94b2f;
  --warm: #ffcf48;
  --shadow: 0 16px 50px rgba(31, 27, 18, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 9% 0%, rgba(255, 207, 72, 0.2), transparent 24rem),
    var(--paper);
}

button,
input,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

.lab-header,
.lab-toolbar,
.reading-guide,
.case-list {
  width: min(1520px, calc(100% - 40px));
  margin-inline: auto;
}

.lab-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: end;
  padding: 56px 0 28px;
}

.home-link {
  display: inline-flex;
  margin-bottom: 18px;
  color: #56584f;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.home-link:hover,
.home-link:focus-visible {
  color: #a23b2b;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #a23b2b;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 900px;
  margin-bottom: 14px;
  font-size: clamp(30px, 4.2vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.intro {
  max-width: 920px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.assumption {
  display: grid;
  gap: 5px;
  min-width: 290px;
  padding: 18px 20px;
  border: 1px solid rgba(233, 75, 47, 0.18);
  border-radius: 18px;
  background: rgba(255, 253, 248, 0.78);
  box-shadow: var(--shadow);
}

.assumption span {
  color: #a23b2b;
  font-size: 12px;
  font-weight: 800;
}

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

.assumption small {
  color: var(--muted);
}

.lab-toolbar {
  position: sticky;
  z-index: 30;
  top: 12px;
  display: flex;
  gap: 16px;
  align-items: center;
  min-height: 62px;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(222, 217, 206, 0.92);
  border-radius: 18px;
  background: rgba(255, 253, 248, 0.92);
  box-shadow: 0 10px 34px rgba(31, 27, 18, 0.09);
  backdrop-filter: blur(16px);
}

.toolbar-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.toolbar-group label,
.check-control {
  white-space: nowrap;
  font-size: 13px;
  font-weight: 700;
}

.toolbar-group input {
  width: 128px;
  accent-color: var(--hybrid);
}

.toolbar-group output {
  min-width: 38px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}

.check-control {
  display: flex;
  gap: 7px;
  align-items: center;
}

.check-control input {
  accent-color: var(--hybrid);
}

.lab-toolbar button,
.candidate-switcher button,
.manual-verdict button {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 11px;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 750;
}

.lab-toolbar button.secondary {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.import-control {
  display: inline-flex;
  min-height: 38px;
  padding: 0 14px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 750;
  white-space: nowrap;
}

.import-control input {
  position: fixed;
  left: -10000px;
}

.lab-toolbar button:hover,
.candidate-switcher button:hover,
.manual-verdict button:hover,
.truth-open:hover {
  transform: translateY(-1px);
}

.lab-toolbar button:disabled {
  cursor: progress;
  opacity: 0.5;
  transform: none;
}

.global-status {
  overflow: hidden;
  margin: 0 0 0 auto;
  color: var(--muted);
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}

.reading-guide {
  margin-top: 18px;
  padding: 14px 18px;
  border-left: 3px solid var(--warm);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.reading-guide strong {
  color: var(--ink);
}

.case-list {
  display: grid;
  gap: 26px;
  padding: 20px 0 70px;
}

.case-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.case-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  padding: 24px 26px 20px;
  border-bottom: 1px solid var(--line);
}

.case-number {
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.case-title {
  margin-bottom: 6px;
  font-size: 23px;
  letter-spacing: -0.025em;
}

.case-description {
  max-width: 780px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.case-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
  align-items: center;
}

.truth-open {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(233, 75, 47, 0.28);
  border-radius: 999px;
  color: #9e321f;
  background: rgba(233, 75, 47, 0.07);
  cursor: pointer;
  font-size: 12px;
  font-weight: 760;
}

.truth-open[data-saved="true"] {
  border-color: rgba(43, 157, 112, 0.36);
  color: #226d50;
  background: rgba(43, 157, 112, 0.09);
}

.case-state {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: #f1eee5;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.state-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #aaa89f;
}

.case-card[data-state="running"] .state-dot {
  background: var(--warm);
  box-shadow: 0 0 0 4px rgba(255, 207, 72, 0.22);
}

.case-card[data-state="done"] .state-dot {
  background: #2b9d70;
}

.case-card[data-state="error"] .state-dot {
  background: #d83b2d;
}

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

.result-pane {
  min-width: 0;
  padding: 20px;
  border-right: 1px solid var(--line);
}

.result-pane:last-child {
  border-right: 0;
}

.pane-heading {
  display: flex;
  min-height: 43px;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.pane-heading > div {
  display: flex;
  gap: 8px;
  align-items: center;
}

.pane-heading h3 {
  margin: 0;
  font-size: 15px;
}

.pane-heading > p {
  margin: 2px 0 0;
  color: var(--muted);
  text-align: right;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.method-tag {
  display: grid;
  width: 29px;
  height: 25px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  font-size: 11px;
  font-weight: 850;
}

.method-tag.neutral {
  background: #6f7168;
}

.method-tag.legacy {
  background: var(--legacy);
}

.method-tag.hybrid {
  background: var(--hybrid);
}

.canvas-button {
  position: relative;
  display: grid;
  overflow: hidden;
  width: 100%;
  min-height: 220px;
  padding: 0;
  place-items: center;
  border: 1px solid #cbc6bb;
  border-radius: 14px;
  background:
    linear-gradient(45deg, #dad7ce 25%, transparent 25%) 0 0 / 18px 18px,
    linear-gradient(-45deg, #dad7ce 25%, transparent 25%) 0 9px / 18px 18px,
    linear-gradient(45deg, transparent 75%, #dad7ce 75%) 9px -9px / 18px 18px,
    linear-gradient(-45deg, transparent 75%, #dad7ce 75%) -9px 0 / 18px 18px,
    #ebe8df;
  cursor: zoom-in;
}

.canvas-button canvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 530px;
  object-fit: contain;
}

.zoom-hint {
  position: absolute;
  right: 9px;
  bottom: 9px;
  padding: 5px 8px;
  border-radius: 999px;
  background: rgba(17, 18, 15, 0.72);
  color: #fff;
  font-size: 10px;
  opacity: 0;
  transition: opacity 140ms ease;
}

.canvas-button:hover .zoom-hint,
.canvas-button:focus-visible .zoom-hint {
  opacity: 1;
}

.pane-note {
  min-height: 36px;
  margin: 10px 2px 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.candidate-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  min-height: 36px;
  margin-top: 10px;
}

.candidate-switcher button {
  min-height: 32px;
  padding-inline: 10px;
  border-color: #e1ddd3;
  background: #f2efe7;
  color: var(--muted);
  font-size: 11px;
}

.candidate-switcher button[aria-pressed="true"] {
  border-color: rgba(233, 75, 47, 0.36);
  background: rgba(233, 75, 47, 0.11);
  color: #a52f1d;
}

.candidate-switcher button.reviewed {
  box-shadow: inset 0 0 0 1px rgba(43, 157, 112, 0.42);
}

.evidence-panel {
  padding: 18px 26px 22px;
  border-top: 1px solid var(--line);
  background: #fbf8f1;
}

.evidence-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 14px;
}

.evidence-heading > div {
  display: flex;
  gap: 9px;
  align-items: baseline;
}

.evidence-heading span,
.expected-grid {
  color: var(--muted);
  font-size: 11px;
}

.evidence-heading strong {
  font-size: 13px;
}

.expected-grid {
  margin: 0;
}

.review-note {
  margin: -3px 0 14px;
  padding: 10px 12px;
  border-left: 3px solid #2b9d70;
  border-radius: 0 9px 9px 0;
  color: #3f6253;
  background: rgba(43, 157, 112, 0.07);
  font-size: 11px;
  line-height: 1.55;
}

.evidence-bars {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.evidence-item {
  display: grid;
  grid-template-columns: 70px minmax(40px, 1fr) 34px;
  gap: 7px;
  align-items: center;
}

.evidence-item span,
.evidence-item output {
  color: var(--muted);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.evidence-item i {
  overflow: hidden;
  height: 6px;
  border-radius: 999px;
  background: #e1ddd4;
}

.evidence-item b {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--warm), var(--hybrid));
  transition: width 220ms ease;
}

.evidence-item output {
  text-align: right;
}

.manual-verdict {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 17px;
}

.manual-verdict > span {
  margin-right: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.manual-verdict button {
  min-height: 31px;
  padding-inline: 10px;
  border-color: #d9d4ca;
  background: #fff;
  color: var(--muted);
  font-size: 11px;
}

.manual-verdict button[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.zoom-dialog {
  width: min(94vw, 1220px);
  max-width: none;
  max-height: 94vh;
  padding: 0;
  border: 0;
  border-radius: 22px;
  background: var(--card);
  box-shadow: 0 30px 110px rgba(0, 0, 0, 0.38);
}

.zoom-dialog::backdrop {
  background: rgba(16, 17, 14, 0.72);
  backdrop-filter: blur(5px);
}

.zoom-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--line);
}

.zoom-header h2 {
  margin: 0;
  font-size: 19px;
}

.icon-button {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  font-size: 22px;
}

.zoom-stage {
  overflow: auto;
  max-height: calc(94vh - 145px);
  padding: 20px;
  background: #76776f;
}

.zoom-stage canvas {
  display: block;
  width: auto;
  min-width: min(100%, 820px);
  max-width: none;
  height: auto;
  margin: auto;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.24);
  image-rendering: auto;
}

.zoom-meta {
  margin: 0;
  padding: 11px 20px 14px;
  color: var(--muted);
  font-size: 12px;
}

.truth-dialog {
  overflow: auto;
  width: min(96vw, 1260px);
  max-width: none;
  max-height: 96vh;
  padding: 0;
  border: 0;
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 30px 110px rgba(0, 0, 0, 0.42);
}

.truth-dialog::backdrop {
  background: rgba(16, 17, 14, 0.76);
  backdrop-filter: blur(6px);
}

.truth-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 18px 20px 15px;
  border-bottom: 1px solid var(--line);
}

.truth-header h2 {
  margin: 0 0 5px;
  font-size: 21px;
}

.truth-header p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.truth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  min-height: 560px;
}

.truth-workspace {
  min-width: 0;
  padding: 18px;
  background: #6d6e67;
}

.truth-stage {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 500px;
  place-items: center;
  overflow: hidden;
  border-radius: 15px;
  background:
    linear-gradient(45deg, #5e5f59 25%, transparent 25%) 0 0 / 20px 20px,
    linear-gradient(-45deg, #5e5f59 25%, transparent 25%) 0 10px / 20px 20px,
    linear-gradient(45deg, transparent 75%, #5e5f59 75%) 10px -10px / 20px 20px,
    linear-gradient(-45deg, transparent 75%, #5e5f59 75%) -10px 0 / 20px 20px,
    #76776f;
}

.truth-stage > #truthCanvas {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: min(68vh, 720px);
  height: auto;
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.28);
  cursor: crosshair;
  touch-action: none;
}

.truth-stage > #truthCanvas.dragging {
  cursor: grabbing;
}

.truth-magnifier {
  position: absolute;
  z-index: 4;
  width: 156px;
  height: 156px;
  border-radius: 50%;
  filter: drop-shadow(0 12px 26px rgba(0, 0, 0, 0.38));
  pointer-events: none;
}

.truth-help {
  margin: 12px 4px 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 11px;
  line-height: 1.55;
}

.truth-controls {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
  border-left: 1px solid var(--line);
}

.truth-field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.truth-field-grid > label,
.truth-note-field {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
}

.truth-stepper {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) 36px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
}

.truth-stepper button {
  padding: 0;
  border: 0;
  background: #f0ede5;
  cursor: pointer;
  font-size: 18px;
}

.truth-stepper input {
  min-width: 0;
  height: 42px;
  border: 0;
  outline: 0;
  text-align: center;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  appearance: textfield;
}

.truth-stepper input::-webkit-inner-spin-button,
.truth-stepper input::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

.truth-note-field textarea {
  width: 100%;
  resize: vertical;
  padding: 10px 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--ink);
  background: #fff;
  line-height: 1.5;
}

.truth-data-note {
  padding: 13px 14px;
  border: 1px solid rgba(41, 127, 144, 0.18);
  border-radius: 13px;
  color: #47616a;
  background: rgba(41, 127, 144, 0.07);
  font-size: 11px;
  line-height: 1.55;
}

.truth-data-note strong {
  color: #2f4f59;
}

.truth-data-note p {
  margin: 4px 0 0;
}

.truth-status {
  min-height: 36px;
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.truth-actions {
  display: grid;
  gap: 9px;
  margin-top: auto;
}

.truth-actions button {
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 11px;
  color: #fff;
  background: var(--ink);
  cursor: pointer;
  font-weight: 760;
}

.truth-actions button.secondary {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}

.truth-actions button.danger {
  border-color: rgba(216, 59, 45, 0.2);
  color: #a72d22;
  background: rgba(216, 59, 45, 0.06);
}

.truth-actions button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.legacy-runner {
  position: fixed;
  z-index: -1;
  top: 0;
  left: -12000px;
  width: 1280px;
  height: 900px;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 1050px) {
  .lab-header {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .assumption {
    min-width: 0;
  }

  .comparison-grid {
    grid-template-columns: 1fr 1fr;
  }

  .source-result {
    grid-column: 1 / -1;
  }

  .source-result .canvas-button canvas {
    max-height: 420px;
  }

  .result-pane:nth-child(2) {
    border-left: 0;
  }

  .evidence-bars {
    grid-template-columns: 1fr 1fr;
  }

  .truth-layout {
    grid-template-columns: 1fr;
  }

  .truth-controls {
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 720px) {
  .lab-header,
  .lab-toolbar,
  .reading-guide,
  .case-list {
    width: min(100% - 22px, 1520px);
  }

  .lab-header {
    padding-top: 34px;
  }

  h1 {
    font-size: 34px;
  }

  .lab-toolbar {
    position: relative;
    top: auto;
    flex-wrap: wrap;
  }

  .global-status {
    width: 100%;
    margin-left: 0;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .source-result {
    grid-column: auto;
  }

  .result-pane {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .result-pane:last-child {
    border-bottom: 0;
  }

  .case-header,
  .evidence-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .evidence-bars {
    grid-template-columns: 1fr;
  }

  .case-actions {
    width: 100%;
    justify-content: space-between;
  }

  .truth-dialog {
    width: 100vw;
    max-height: 100vh;
    border-radius: 0;
  }

  .truth-workspace,
  .truth-controls {
    padding: 12px;
  }

  .truth-stage {
    min-height: 330px;
  }

  .zoom-stage canvas {
    min-width: 900px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}