Demo mode — every action is simulated in-browser against a self-contained mock. Set NEXT_PUBLIC_API_BASE to point the same client at the live SS-26 / SS-01 / SS-10 APIs.
DNS & traffic steering
Authoritative zones and MagicDNS names, GeoDNS + health-weighted answers, a DNSSEC ceremony and 99.999% serve-stale resilience (SS-25).