[data-tool-root="keyboard-chatter-test"] {
  --space-xs: 4px; --space-sm: 8px; --space-md: 12px; --space-lg: 16px; --space-xl: 24px; --space-2xl: 32px; --space-3xl: 48px;
  --gray-50: #fbfbfb; --gray-100: #f7f7f7; --gray-150: #f2f2f2; --gray-200: #eeeeee; --gray-300: #dddddd; --gray-400: #bbbbbb; --gray-500: #999999; --gray-600: #666666; --gray-700: #444444; --gray-800: #222222; --gray-900: #111111;
  --bg-canvas: #ffffff; --bg-module: #f7f7f7; --bg-workspace: #f2f2f2; --bg-result-surface: #ffffff; --bg-hover: #eeeeee; --bg-active: #111111;
  --text-primary: #111111; --text-secondary: #444444; --text-tertiary: #666666; --text-placeholder: #999999; --text-on-dark: #ffffff;
  --border: #dddddd; --border-strong: #222222; --success: #276749; --danger: #a12424; --warning: #805300; --info: #315f7d;
  --radius-sm: 4px; --radius: 6px; --radius-round: 999px;
  box-sizing: border-box; width: 100%; margin: 0; padding: 0 360px 48px 30px; color: var(--text-primary); background: var(--bg-canvas);
  font-family: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 15px; line-height: 1.7;
}
[data-tool-root="keyboard-chatter-test"], [data-tool-root="keyboard-chatter-test"] *, [data-tool-root="keyboard-chatter-test"] *::before, [data-tool-root="keyboard-chatter-test"] *::after { box-sizing: border-box; }
[data-tool-root="keyboard-chatter-test"] .tool-page-header { padding: 24px 0 16px; border-bottom: 1px solid var(--border); }
[data-tool-root="keyboard-chatter-test"] .tool-page-header h1 { margin: 0; font-size: 30px; line-height: 1.2; letter-spacing: -.5px; font-weight: 800; }
[data-tool-root="keyboard-chatter-test"] .page-description { margin: 4px 0 0; color: var(--text-tertiary); }
[data-tool-root="keyboard-chatter-test"] .tool-workspace { margin-top: 16px; }
[data-tool-root="keyboard-chatter-test"] .workspace-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: stretch; gap: 16px; }
[data-tool-root="keyboard-chatter-test"] .input-panel, [data-tool-root="keyboard-chatter-test"] .result-panel { display: flex; flex-direction: column; min-width: 0; padding: 16px 24px; background: var(--bg-workspace); border: 1px solid var(--border); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] .panel-label { margin: 0 0 12px; font-size: 16px; font-weight: 800; }
[data-tool-root="keyboard-chatter-test"] .settings-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(140px,.65fr); gap: 12px; }
[data-tool-root="keyboard-chatter-test"] .field { min-width: 0; margin-bottom: 12px; }
[data-tool-root="keyboard-chatter-test"] .field label { display: block; margin-bottom: 4px; color: var(--text-secondary); font-size: 13px; font-weight: 700; }
[data-tool-root="keyboard-chatter-test"] .field-help, [data-tool-root="keyboard-chatter-test"] .field-error { margin: 4px 0 0; font-size: 13px; }
[data-tool-root="keyboard-chatter-test"] .field-help { color: var(--text-tertiary); } [data-tool-root="keyboard-chatter-test"] .field-error { color: var(--danger); }
[data-tool-root="keyboard-chatter-test"] input { width: 100%; min-height: 42px; padding: 9px 12px; color: var(--text-primary); background: var(--bg-canvas); border: 1px solid var(--border); border-radius: var(--radius); font: inherit; }
[data-tool-root="keyboard-chatter-test"] input:focus { border-color: var(--border-strong); }
[data-tool-root="keyboard-chatter-test"] input[aria-invalid="true"] { border-color: var(--danger); }
[data-tool-root="keyboard-chatter-test"] :focus-visible { outline: 2px solid var(--border-strong); outline-offset: 2px; }
[data-tool-root="keyboard-chatter-test"] .btn { min-height: 40px; min-width: 80px; padding: 0 16px; background: var(--bg-canvas); color: var(--text-primary); border: 1px solid var(--border); border-radius: var(--radius); font: 600 14px/1.2 inherit; cursor: pointer; }
[data-tool-root="keyboard-chatter-test"] .btn:hover { background: var(--bg-hover); border-color: var(--gray-400); }
[data-tool-root="keyboard-chatter-test"] .btn-primary { background: var(--bg-active); color: var(--text-on-dark); border-color: var(--bg-active); }
[data-tool-root="keyboard-chatter-test"] .btn-primary:hover { background: var(--gray-800); }
[data-tool-root="keyboard-chatter-test"] .btn:disabled { cursor: not-allowed; opacity: .55; }
[data-tool-root="keyboard-chatter-test"] .start-button { width: 100%; }
[data-tool-root="keyboard-chatter-test"] .capture-zone { display: grid; place-items: center; align-content: center; gap: 6px; min-height: 146px; margin: 12px 0; padding: 20px; text-align: center; background: var(--bg-canvas); border: 1px dashed var(--gray-400); border-radius: var(--radius); cursor: text; }
[data-tool-root="keyboard-chatter-test"] .capture-zone.is-active { border-style: solid; border-color: var(--border-strong); }
[data-tool-root="keyboard-chatter-test"] .capture-zone.is-held { background: var(--gray-100); }
[data-tool-root="keyboard-chatter-test"] .capture-zone strong { display: block; font-size: clamp(20px, 3vw, 32px); line-height: 1.25; }
[data-tool-root="keyboard-chatter-test"] .capture-zone span { color: var(--text-tertiary); }
[data-tool-root="keyboard-chatter-test"] .live-metrics { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); margin: 0; padding: 10px 0; background: var(--bg-canvas); border: 1px solid var(--border); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] .live-metrics div { min-width: 0; padding: 0 10px; }
[data-tool-root="keyboard-chatter-test"] .live-metrics div + div { border-left: 1px solid var(--border); }
[data-tool-root="keyboard-chatter-test"] .live-metrics dt { color: var(--text-tertiary); font-size: 12px; }
[data-tool-root="keyboard-chatter-test"] .live-metrics dd { margin: 1px 0 0; font-weight: 800; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
[data-tool-root="keyboard-chatter-test"] .sample-progress { margin-top: 12px; }
[data-tool-root="keyboard-chatter-test"] .sample-progress__meta { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; }
[data-tool-root="keyboard-chatter-test"] .progress-track { height: 10px; margin-top: 6px; overflow: hidden; background: var(--gray-200); border-radius: var(--radius-round); }
[data-tool-root="keyboard-chatter-test"] .progress-fill { display: block; width: var(--progress,0%); height: 100%; background: var(--gray-900); border-radius: inherit; transition: width .1s linear; }
[data-tool-root="keyboard-chatter-test"] .phase-line { display: flex; justify-content: space-between; gap: 8px; margin: 10px 0 0; color: var(--text-secondary); }
[data-tool-root="keyboard-chatter-test"] .status-line { min-height: 24px; margin: 8px 0 0; color: var(--text-secondary); }
[data-tool-root="keyboard-chatter-test"] .status-line[data-kind="error"] { color: var(--danger); } [data-tool-root="keyboard-chatter-test"] .status-line[data-kind="success"] { color: var(--success); }
[data-tool-root="keyboard-chatter-test"] .result-summary { display: flex; flex: 1; flex-direction: column; min-width: 0; padding: 20px; background: var(--bg-result-surface); border: 1px solid var(--border); border-left: 4px solid var(--gray-400); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] .result-summary[data-state="info"] { border-left-color: var(--info); } [data-tool-root="keyboard-chatter-test"] .result-summary[data-state="warning"] { border-left-color: var(--warning); } [data-tool-root="keyboard-chatter-test"] .result-summary[data-state="success"] { border-left-color: var(--success); } [data-tool-root="keyboard-chatter-test"] .result-summary[data-state="danger"] { border-left-color: var(--danger); }
[data-tool-root="keyboard-chatter-test"] .result-summary__header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
[data-tool-root="keyboard-chatter-test"] .result-summary__eyebrow { color: var(--text-tertiary); font-size: 13px; font-weight: 700; }
[data-tool-root="keyboard-chatter-test"] .result-badge { display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; background: var(--gray-700); color: var(--text-on-dark); border-radius: var(--radius-round); font-size: 13px; font-weight: 700; }
[data-tool-root="keyboard-chatter-test"] .result-badge[data-state="info"] { background: var(--info); } [data-tool-root="keyboard-chatter-test"] .result-badge[data-state="warning"] { background: var(--warning); } [data-tool-root="keyboard-chatter-test"] .result-badge[data-state="success"] { background: var(--success); } [data-tool-root="keyboard-chatter-test"] .result-badge[data-state="danger"] { background: var(--danger); }
[data-tool-root="keyboard-chatter-test"] .result-primary { margin-top: 24px; }
[data-tool-root="keyboard-chatter-test"] .result-primary__label { display: block; color: var(--text-secondary); font-weight: 700; }
[data-tool-root="keyboard-chatter-test"] .result-primary__value { display: block; margin-top: 2px; font-size: clamp(36px,6vw,64px); line-height: 1.15; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
[data-tool-root="keyboard-chatter-test"] .result-primary__secondary { display: block; margin-top: 6px; color: var(--text-tertiary); }
[data-tool-root="keyboard-chatter-test"] .result-data-band { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin: 20px 0 0; padding: 12px; background: var(--gray-50); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); border-radius: var(--radius-sm); }
[data-tool-root="keyboard-chatter-test"] .result-data-band div { min-width: 0; padding: 0 12px; } [data-tool-root="keyboard-chatter-test"] .result-data-band div + div { border-left: 1px solid var(--border); }
[data-tool-root="keyboard-chatter-test"] .result-data-band dt { color: var(--text-tertiary); font-size: 13px; } [data-tool-root="keyboard-chatter-test"] .result-data-band dd { margin: 2px 0 0; font-weight: 800; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
[data-tool-root="keyboard-chatter-test"] .result-summary__note { margin: 16px 0 0; color: var(--text-secondary); }
[data-tool-root="keyboard-chatter-test"] .result-summary__actions { margin-top: auto; padding-top: 16px; }
[data-tool-root="keyboard-chatter-test"] .button-row { display: flex; flex-wrap: wrap; gap: 8px; }
[data-tool-root="keyboard-chatter-test"] h2 { margin: 32px 0 16px; padding-left: 12px; border-left: 3px solid var(--gray-900); font-size: 24px; line-height: 1.3; }
[data-tool-root="keyboard-chatter-test"] h3 { margin: 0 0 12px; font-size: 18px; line-height: 1.4; }
[data-tool-root="keyboard-chatter-test"] .card-block { margin-bottom: 16px; padding: 16px 24px; background: var(--bg-module); border: 1px solid var(--border); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] .insight-item { min-width: 0; padding: 16px; background: var(--bg-canvas); border: 1px solid var(--border); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] .interval-plot { min-height: 168px; padding: 12px 0 0; }
[data-tool-root="keyboard-chatter-test"] .interval-stage { position: relative; height: 148px; overflow: hidden; border-bottom: 1px solid var(--border-strong); }
[data-tool-root="keyboard-chatter-test"] .interval-threshold-zone { position: absolute; inset: 0 auto 0 0; width: var(--threshold-x,0%); background: #fff0f0; border-right: 1px solid var(--danger); }
[data-tool-root="keyboard-chatter-test"] .interval-threshold-line { position: absolute; top: 0; bottom: 0; left: var(--threshold-x,0%); width: 1px; background: var(--danger); }
[data-tool-root="keyboard-chatter-test"] .interval-axis { position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--border-strong); }
[data-tool-root="keyboard-chatter-test"] .interval-dot { position: absolute; left: var(--dot-x,0%); top: var(--dot-y,50%); width: 10px; height: 10px; margin: -5px 0 0 -5px; background: var(--gray-800); border: 2px solid var(--bg-canvas); border-radius: var(--radius-round); }
[data-tool-root="keyboard-chatter-test"] .interval-dot.is-suspect { background: var(--danger); }
[data-tool-root="keyboard-chatter-test"] .interval-legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; font-size: 13px; }
[data-tool-root="keyboard-chatter-test"] .interval-legend span { display: inline-flex; align-items: center; gap: 6px; }
[data-tool-root="keyboard-chatter-test"] .interval-legend__marker { width: 10px; height: 10px; background: var(--gray-800); border-radius: var(--radius-round); } [data-tool-root="keyboard-chatter-test"] .interval-legend__marker.is-suspect { background: var(--danger); }
[data-tool-root="keyboard-chatter-test"] .chart-labels { display: flex; justify-content: space-between; gap: 8px; color: var(--text-tertiary); font-size: 12px; }
[data-tool-root="keyboard-chatter-test"] .visual-empty { display: grid; min-height: 148px; place-items: center; padding: 16px; color: var(--text-tertiary); text-align: center; border: 1px dashed var(--border); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] details.acc { background: var(--bg-canvas); border: 1px solid var(--border); border-radius: var(--radius); }
[data-tool-root="keyboard-chatter-test"] details.acc + details.acc, [data-tool-root="keyboard-chatter-test"] .faq-group details.acc { margin-top: 8px; }
[data-tool-root="keyboard-chatter-test"] details.acc summary { min-height: 48px; display: flex; align-items: center; padding: 0 14px; font-size: 16px; font-weight: 700; cursor: pointer; list-style: none; }
[data-tool-root="keyboard-chatter-test"] details.acc summary::-webkit-details-marker { display: none; } [data-tool-root="keyboard-chatter-test"] details.acc summary::after { content: "+"; margin-left: auto; color: var(--text-tertiary); font-size: 20px; } [data-tool-root="keyboard-chatter-test"] details.acc[open] summary::after { content: "−"; } [data-tool-root="keyboard-chatter-test"] details.acc[open] summary { border-bottom: 1px solid var(--border); }
[data-tool-root="keyboard-chatter-test"] .acc-panel { padding: 14px; } [data-tool-root="keyboard-chatter-test"] .acc-panel > :first-child { margin-top: 0; } [data-tool-root="keyboard-chatter-test"] .acc-panel > :last-child { margin-bottom: 0; }
[data-tool-root="keyboard-chatter-test"] .source-list { margin: 0; padding-left: 20px; } [data-tool-root="keyboard-chatter-test"] .source-list a { color: var(--text-primary); text-underline-offset: 3px; }
[data-tool-root="keyboard-chatter-test"] .related-links { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }
[data-tool-root="keyboard-chatter-test"] .related-links > a { display: block; padding: 12px; color: var(--text-primary); background: var(--bg-canvas); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; font-weight: 700; }
[data-tool-root="keyboard-chatter-test"] .related-links > a:hover { background: var(--bg-hover); }
[data-tool-root="keyboard-chatter-test"] .category-link { grid-column: 1 / -1; margin: 4px 0 0; } [data-tool-root="keyboard-chatter-test"] .category-link a { color: var(--text-primary); text-underline-offset: 3px; }
[data-tool-root="keyboard-chatter-test"] .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 900px) { [data-tool-root="keyboard-chatter-test"] { padding-right: 8px; padding-left: 8px; } }
@media (max-width: 720px) { [data-tool-root="keyboard-chatter-test"] .workspace-grid, [data-tool-root="keyboard-chatter-test"] .settings-grid, [data-tool-root="keyboard-chatter-test"] .related-links { grid-template-columns: 1fr; gap: 8px; } [data-tool-root="keyboard-chatter-test"] .input-panel, [data-tool-root="keyboard-chatter-test"] .result-panel, [data-tool-root="keyboard-chatter-test"] .card-block { padding: 14px 12px; } [data-tool-root="keyboard-chatter-test"] .result-data-band { grid-template-columns: 1fr; } [data-tool-root="keyboard-chatter-test"] .result-data-band div { padding: 8px 0; } [data-tool-root="keyboard-chatter-test"] .result-data-band div + div { border-left: 0; border-top: 1px solid var(--border); } [data-tool-root="keyboard-chatter-test"] .live-metrics { grid-template-columns: repeat(2,minmax(0,1fr)); } [data-tool-root="keyboard-chatter-test"] .live-metrics div:nth-child(3) { border-left: 0; } [data-tool-root="keyboard-chatter-test"] .live-metrics div:nth-child(n+3) { border-top: 1px solid var(--border); padding-top: 8px; } }
@media (max-width: 430px) { [data-tool-root="keyboard-chatter-test"] .button-row { display: grid; grid-template-columns: 1fr; } [data-tool-root="keyboard-chatter-test"] .btn { min-height: 44px; width: 100%; } [data-tool-root="keyboard-chatter-test"] .tool-page-header h1 { font-size: 28px; } [data-tool-root="keyboard-chatter-test"] .sample-progress__meta, [data-tool-root="keyboard-chatter-test"] .phase-line { flex-direction: column; gap: 2px; } }
@media (prefers-reduced-motion: reduce) { [data-tool-root="keyboard-chatter-test"] .progress-fill { transition: none; } }