:root{--bg-deep: #eef2f7;--bg-panel: #ffffff;--bg-elevated: #f8fafc;--bg-hover: #e8edf4;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #0f172a;--text-muted: #475569;--text-dim: #64748b;--accent: #0284c7;--accent-dim: rgba(2, 132, 199, .12);--accent-focus-border: #7dd3fc;--accent-focus-ring: rgba(125, 211, 252, .22);--accent-2: #6d28d9;--used-for-pill-bg: rgba(254, 242, 242, .95);--used-for-pill-border: rgba(252, 165, 165, .65);--used-for-pill-text: #7f1d1d;--used-for-pill-kbd: #991b1b;--source-pill-bg: rgba(241, 245, 249, .95);--source-pill-border: rgba(100, 116, 139, .5);--source-pill-text: #334155;--source-pill-kbd: #475569;--success: #059669;--radius: 10px;--radius-sm: 6px;--font: "Segoe UI", system-ui, -apple-system, sans-serif;--shadow: 0 12px 32px rgba(15, 23, 42, .08);--unit-tone-a-bg: rgba(224, 242, 254, .52);--unit-tone-a-border: rgba(56, 189, 248, .3);--unit-tone-a-bg-strong: rgba(186, 230, 253, .88);--unit-tone-b-bg: rgba(237, 233, 254, .52);--unit-tone-b-border: 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