:root{--color-bg:#ffffff;--color-surface:#f4f4f5;--color-surface-alt:#e4e4e7;--color-text:#1c1c1e;--color-text-muted:#52525b;--color-border:#71717a;--color-accent:#3f6e52;--color-accent-contrast:#ffffff;--color-accent-hover:#345b44;--color-focus:#1d4ed8;--color-danger:#b91c1c;--color-link:#2f5233;--font-body:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-heading:var(--font-body);--font-mono:ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", monospace;--font-size-base:1rem;--font-size-sm:0.875rem;--font-size-lg:1.125rem;--font-size-xl:1.5rem;--font-size-2xl:2rem;--font-size-3xl:2.5rem;--line-height-base:1.6;--line-height-heading:1.2;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-6:1.5rem;--space-8:2rem;--space-12:3rem;--space-16:4rem;--radius-sm:0.25rem;--radius-md:0.5rem;--radius-lg:1rem;--radius-full:999px;--content-max-width:72rem;--touch-target-min:44px;--transition-fast:150ms ease;--transition-base:250ms ease;--shadow-sm:0 1px 2px rgba(0, 0, 0, 0.08);--shadow-md:0 4px 12px rgba(0, 0, 0, 0.12)}@media(prefers-color-scheme:dark){:root{--color-bg:#18181b;--color-surface:#232326;--color-surface-alt:#2c2c30;--color-text:#f4f4f5;--color-text-muted:#a1a1aa;--color-border:#82828b;--color-accent:#6ea884;--color-accent-contrast:#0f1a13;--color-accent-hover:#82bb96;--color-focus:#60a5fa;--color-danger:#fca5a5;--color-link:#8fc39f}}