:root{--color-primary:#3b82f6;--color-primary-light:#60a5fa;--color-primary-dark:#2563eb;--color-text:#1f2937;--color-text-muted:#6b7280;--color-background:#ffffff;--color-surface:#f9fafb;--color-border:#e5e7eb;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--color-info:#3b82f6;--article-bg:var(--color-background);--article-bg-opacity:0.95;--article-blur:0px;--article-shadow:0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);--font-body:system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;--font-heading:var(--font-body);--font-mono:ui-monospace, 'Cascadia Code', 'Fira Code', 'JetBrains Mono', Consolas, monospace;--text-xs:0.75rem;--text-sm:0.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--text-4xl:2.25rem;--leading-tight:1.25;--leading-normal:1.5;--leading-relaxed:1.75;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-12:3rem;--space-16:4rem;--content-width:65ch;--page-width:1200px;--radius:0.375rem;--radius-lg:0.5rem}@media(prefers-color-scheme:dark){:root{--color-text:#f9fafb;--color-text-muted:#9ca3af;--color-background:#111827;--color-surface:#1f2937;--color-border:#374151;--article-shadow:0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2)}}