:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;--bg: #eef1f6;--panel: #ffffff;--panel-muted: #f6f8fb;--panel-elevated: #ffffff;--text: #0f172a;--text-muted: #5b667a;--border: #e2e8f0;--border-strong: #cbd5e1;--primary: #2f6bff;--primary-strong: #2557d6;--ghost: #e9eef8;--success: #16a34a;--warning: #f59e0b;--danger: #ef4444;--shadow: 0 12px 30px rgba(15, 23, 42, .12);--editor-bg: #f8fafc;--editor-border: #e2e8f0;--editor-text: #0f172a;--editor-muted: #94a3b8;--white: #ffffff;--logo-bg: #0f172a;--editor-gutter-border: rgba(148, 163, 184, .15);--editor-inset-shadow: rgba(148, 163, 184, .08);--toggle-knob-shadow: rgba(0, 0, 0, .1);--validation-success-bg: rgba(22, 163, 74, .12);--validation-success-border: rgba(22, 163, 74, .35);--validation-error-bg: rgba(239, 68, 68, .12);--validation-error-border: rgba(239, 68, 68, .4);--error-border: rgba(239, 68, 68, .5);--error-bg: rgba(239, 68, 68, 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