:root{--color-bg:#f5f5f5;--color-surface:#fff;--color-surface-muted:#f1f1f1;--color-text:#111;--color-text-muted:#5c5c5c;--color-border:#dedede;--color-border-strong:#9a9a9a;--color-accent:#111;--color-accent-hover:#383838;--color-accent-contrast:#fff;--color-accent-soft:#e7e7e7;--color-focus:#111;--color-demo-bg:#eee;--color-demo-text:#303030;--color-success-bg:#e6e6e6;--color-success-text:#202020;--color-warning-bg:#ededed;--color-warning-text:#3c3c3c;--color-error-bg:#e1e1e1;--color-error-text:#1a1a1a;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--text-sm:.875rem;--text-base:1rem;--text-lg:1.25rem;--text-xl:1.625rem;--text-2xl:2.125rem;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--radius-sm:4px;--radius-md:6px;--radius-pill:999px;--shadow-card:none;--page-width:72rem;--page-narrow:34rem}