:root{--bg: #f9fafb;--panel: #ffffff;--panel-soft: #f3f5f8;--ink: #111827;--muted: #4b5563;--soft: #9ca3af;--line: #e5e7eb;--line-soft: #eef1f4;--brand: #2563eb;--brand-strong: #1d4ed8;--brand-soft: #eff6ff;--brand-edge: #cfe0ff;--ok: #15803d;--ok-bg: #dcfce7;--ok-edge: #bbe9c8;--warn: #c2410c;--warn-bg: #fff7ed;--stop: #b91c1c;--stop-bg: #fee2e2;--stop-edge: #f6c9c9;--dark: #0f141d;--dark-line: #232c3a;--dark-ink: #e6ecf5;--dark-muted: #94a3b8;--dark-soft: #64748b;--dark-live: #16263f;--dark-live-edge: #26456f;--dark-stop: #351720;--dark-stop-edge: #5e2530;--code-prompt: #64748b;--code-program: #f1f5fb;--code-plain: #aab8c9;--code-value: #7cc0ff;--code-flag: #8296ad;--font-sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--radius-sm: 4px;--radius: 8px;--radius-lg: 12px;--shell: 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