:root{--color-bg:#ffffff;--color-text:#2d2d2d;--color-heading:#1a1a1a;--color-link:#2563eb;--color-link-hover:#1d4ed8;--color-border:#e5e7eb;--color-muted:#6b7280;--color-tag-bg:#f3f4f6;--color-tag-text:#4b5563;--color-footer-bg:#f9fafb;--color-code-bg:#f5f5f5;--font-body:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--max-width:1440px;--sidebar-width:300px;--header-height:64px}[data-theme=dark]{--color-bg:#0f172a;--color-text:#e2e8f0;--color-heading:#f8fafc;--color-link:#60a5fa;--color-link-hover:#93c5fd;--color-border:#334155;--color-muted:#94a3b8;--color-tag-bg:#1e293b;--color-tag-text:#cbd5e1;--color-footer-bg:#0b1120;--color-code-bg:#1e293b}[data-theme=dark] .tag:hover{background:#334155;color:var(--color-heading)}.theme-toggle{margin-left:1.5rem;background:0 0;border:1px solid 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