:root {
  color-scheme: light;
  --box-paper: #f5f4ef;
  --box-surface: #fbfaf6;
  --box-ink: #222824;
  --box-muted: #687069;
  --box-line: #cfd3cc;
  --box-line-strong: #9fa79f;
  --box-accent: #245b49;
  --box-accent-soft: #e2ebe5;
  --box-accent-two: #a36b35;
  --box-danger: #9b2f2f;
  --box-danger-soft: #f8e9e7;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

button,
textarea {
  font: inherit;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--box-accent);
  outline-offset: 3px;
}

.section-kicker {
  margin: 0 0 5px;
  color: var(--box-accent);
  font-size: .78rem;
  font-weight: 780;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.tool-shell h2,
.content-section h2 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.48rem);
  line-height: 1.4;
}

.tool-shell h3,
.content-section h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.4;
}

.tool-shell {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
  border: 1px solid var(--box-line-strong);
  background: var(--box-surface);
}

.calculator-panel,
.result-panel {
  min-width: 0;
  padding: 24px;
}

.calculator-panel {
  border-right: 1px solid var(--box-line);
}

.data-label {
  display: block;
  margin-top: 18px;
  font-weight: 760;
}

.data-input {
  display: block;
  width: 100%;
  min-height: 172px;
  margin-top: 7px;
  padding: 11px 12px;
  border: 1px solid var(--box-line-strong);
  border-radius: 2px;
  color: var(--box-ink);
  background: #fff;
  resize: vertical;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  line-height: 1.55;
}

.data-input[aria-invalid="true"] {
  border-color: var(--box-danger);
  background: #fff8f8;
}

.field-help,
.keyboard-help {
  margin: 6px 0 0;
  color: var(--box-muted);
  font-size: .78rem;
  line-height: 1.55;
}

.keyboard-help {
  margin-top: 2px;
}

.form-error {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 4px solid var(--box-danger);
  background: var(--box-danger-soft);
  color: #762525;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.form-error[hidden] {
  display: none;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.button {
  min-height: 46px;
  padding: 9px 16px;
  border: 1px solid var(--box-accent);
  border-radius: 2px;
  cursor: pointer;
  font-weight: 760;
}

.button-primary {
  color: #fff;
  background: var(--box-accent);
}

.button-primary:hover {
  background: #1b4738;
}

.button-secondary {
  color: var(--box-accent);
  background: transparent;
}

.result-heading-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.status-badge {
  flex: 0 0 auto;
  max-width: 44%;
  padding: 4px 8px;
  border: 1px solid var(--box-line-strong);
  color: var(--box-muted);
  background: var(--box-paper);
  font-size: .72rem;
  font-weight: 760;
  text-align: center;
  overflow-wrap: anywhere;
}

.status-badge[data-state="ready"] {
  border-color: var(--box-accent);
  color: var(--box-accent);
  background: var(--box-accent-soft);
}

.status-badge[data-state="error"] {
  border-color: var(--box-danger);
  color: var(--box-danger);
  background: var(--box-danger-soft);
}

.result-summary {
  min-height: 3.4em;
  margin: 13px 0 0;
  color: #38413b;
  font-size: .9rem;
  overflow-wrap: anywhere;
}

.result-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 14px 0 0;
  border-top: 1px solid var(--box-line);
  border-left: 1px solid var(--box-line);
}

.result-details[hidden] {
  display: none;
}

.result-details > div {
  min-width: 0;
  padding: 9px 10px;
  border-right: 1px solid var(--box-line);
  border-bottom: 1px solid var(--box-line);
  background: #fff;
}

.result-details dt {
  color: var(--box-muted);
  font-size: .72rem;
}

.result-details dd {
  margin: 2px 0 0;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.list-output {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid var(--box-line);
  background: var(--box-paper);
}

.list-output[hidden] {
  display: none;
}

.list-output h3 {
  color: var(--box-accent);
  font-size: .9rem;
}

.list-output output {
  display: block;
  margin-top: 5px;
  color: var(--box-ink);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: .82rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.chart-section {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--box-line);
}

.chart-state {
  margin: 7px 0 0;
  color: var(--box-muted);
  font-size: .82rem;
}

.chart-shell {
  margin: 12px 0 0;
  border: 1px solid var(--box-line);
  background: #f0f2ed;
}

.boxplot-svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 220px;
}

.boxplot-svg .chart-axis,
.boxplot-svg .chart-tick {
  stroke: var(--box-line-strong);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.boxplot-svg .chart-tick {
  stroke-width: 1;
}

.boxplot-svg .chart-tick-label,
.boxplot-svg .chart-marker-label {
  fill: var(--box-muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 17px;
}

.boxplot-svg .chart-marker-label {
  fill: var(--box-accent-two);
  font-size: 16px;
  font-weight: 700;
}

.boxplot-svg .chart-fence {
  stroke: var(--box-accent-two);
  stroke-width: 2;
  stroke-dasharray: 7 6;
  vector-effect: non-scaling-stroke;
}

.boxplot-svg .chart-whisker {
  stroke: var(--box-ink);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}

.boxplot-svg .chart-box {
  fill: var(--box-accent-soft);
  stroke: var(--box-accent);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}

.boxplot-svg .chart-median {
  stroke: var(--box-accent);
  stroke-width: 5;
  vector-effect: non-scaling-stroke;
}

.boxplot-svg .chart-outlier {
  fill: #fff;
  stroke: var(--box-danger);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 15px;
  margin: 10px 0 0;
  padding: 0;
  color: var(--box-muted);
  font-size: .76rem;
  list-style: none;
}

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

.legend-line,
.legend-fence,
.legend-dot,
.legend-box {
  display: inline-block;
  flex: 0 0 auto;
}

.legend-line {
  width: 23px;
  border-top: 3px solid var(--box-ink);
}

.legend-fence {
  width: 23px;
  border-top: 2px dashed var(--box-accent-two);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border: 2px solid var(--box-danger);
  border-radius: 50%;
  background: #fff;
}

.legend-box {
  width: 21px;
  height: 12px;
  border: 2px solid var(--box-accent);
  background: var(--box-accent-soft);
}

.content-section {
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--box-line-strong);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 16px;
  border-top: 1px solid var(--box-line);
  border-left: 1px solid var(--box-line);
}

.method-grid article {
  min-width: 0;
  padding: 14px 15px;
  border-right: 1px solid var(--box-line);
  border-bottom: 1px solid var(--box-line);
}

.method-grid strong {
  display: block;
  color: var(--box-accent);
  overflow-wrap: anywhere;
}

.method-grid p {
  margin: 5px 0 0;
  color: var(--box-muted);
  font-size: .84rem;
  overflow-wrap: anywhere;
}

.school-method {
  margin-top: 18px;
  padding: 16px 17px;
  border: 1px solid var(--box-line);
  background: var(--box-surface);
}

.school-method p {
  margin: 8px 0 0;
}

.school-method ul {
  margin: 10px 0 0;
  padding-left: 1.25em;
}

@media (max-width: 880px) {
  .tool-shell {
    grid-template-columns: 1fr;
  }

  .calculator-panel {
    border-right: 0;
    border-bottom: 1px solid var(--box-line);
  }
}

@media (max-width: 560px) {
  .calculator-panel,
  .result-panel {
    padding: 18px 14px;
  }

  .form-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .result-details,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .boxplot-svg {
    min-height: 180px;
  }

  .boxplot-svg .chart-tick-label {
    font-size: 24px;
  }

  .boxplot-svg .chart-marker-label {
    font-size: 23px;
  }
}

@media (max-width: 390px) {
  .result-heading-row {
    gap: 8px;
  }

  .chart-legend {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}