:root{--bg: #f3f5f8;--surface: #ffffff;--surface-2: #f7f9fc;--text: #101828;--muted: #5b6b7f;--border: #e3e8ef;--border-strong: #cbd5e1;--brand: #0b3b5c;--brand-ink: #ffffff;--brand-soft: #e6f0f7;--accent: #0f766e;--accent-ink: #ffffff;--accent-soft: #e3f4f1;--danger: #b42318;--danger-soft: #fee4e2;--confirmed: #16704a;--confirmed-bg: #e2f4ea;--estimate: #1d4ed8;--estimate-bg: #e4ecfb;--assumption: #8a5a00;--assumption-bg: #fdf1d3;--possibility: #6d3fb0;--possibility-bg: #efe7fb;--demonstration: #9a2f2f;--demonstration-bg: #fbe5e5;--radius: 14px;--radius-sm: 10px;--radius-xs: 8px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);--shadow-md: 0 8px 24px rgba(16, 24, 40, .08);--header-h: 60px;--aside-w: 420px;--maxw: 1360px;--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #0e141b;--surface: #161d26;--surface-2: #1b242f;--text: #e8edf3;--muted: #9aa8b8;--border: 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