:root{--color-bg:#f7f7f5;--color-surface:#fff;--color-border:#e5e5e0;--color-ink:#18181b;--color-ink-soft:#52525b;--color-brand:#0f172a;--color-brand-accent:#2563eb;--color-success:#16a34a;--color-danger:#dc2626}.portal-shell{background:var(--color-bg);color:var(--color-ink);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}