:root{--font-sans: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;--font-size-base: 15px;--radius: 10px;--radius-sm: 6px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--shadow: 0 4px 16px rgba(0, 0, 0, .25);--bg: #0f1117;--bg-elevated: #171a23;--bg-card: #1c2030;--bg-hover: #232838;--border: #2a3042;--text: #e7ebf3;--text-muted: #9aa3b5;--accent: #6c8cff;--accent-strong: #4f6ef0;--accent-contrast: #ffffff;--danger: #ff6b6b;--success: #4ec88a;--warning: #f5b94a}[data-theme=light]{--bg: #f4f6fb;--bg-elevated: #ffffff;--bg-card: #ffffff;--bg-hover: #eef1f8;--border: #dde3ee;--text: #1a1e2b;--text-muted: #5d6781;--accent: #4f6ef0;--accent-strong: #3a57d8;--accent-contrast: #ffffff;--danger: #d6403a;--success: #1f9d57;--warning: #c4860f;--shadow: 0 4px 16px rgba(20, 30, 60, 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