:root,:root[data-theme=dark]{color-scheme:dark;--bg: #070b14;--bg-elev-1: #0c1322;--bg-elev-2: #111a2e;--bg-elev-3: #17223a;--border: #1f2b45;--border-strong: #2c3b5c;--text: #e8eef9;--text-muted: #9fb0cc;--text-faint: #7486a6;--brand: #3b6fe0;--brand-strong: #1e3a8a;--brand-contrast: #ffffff;--blood-oxy: #e5383b;--blood-oxy-soft: #e5383b33;--blood-deoxy: #6a5cff;--blood-deoxy-soft: #6a5cff33;--elec: #ffd84d;--elec-glow: #4de3ff;--elec-text: #ffd84d;--ecg: #39ff88;--ecg-grid-minor: #10301f;--ecg-grid-major: #1a5233;--ecg-bg: #03100a;--pleth: #4de3ff;--pressure-ao: #ff6b6b;--pressure-lv: #ffd84d;--pressure-la: #b388ff;--volume-lv: #39ff88;--myo-dark: #5e1a24;--myo: #8c2f39;--myo-light: #c8505a;--myo-highlight: #f08a8f;--endocardium: #2a0d14;--valve: #f3e3c8;--valve-edge: #c9b48f;--chordae: #e9dcc4;--fat: #c9a227;--vessel-wall: #7a2a35;--ok: #39d98a;--warn: #ffb020;--danger: #ff4d5e;--info: #4de3ff;--font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica 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