body { min-height: 100vh; margin: 0; background: #050b14; }
    .checkout-fallback { min-height: 100vh; display: grid; place-items: center; padding: 24px; color: #eaf4ff; font-family: Inter, system-ui, sans-serif; text-align: center; }
    .checkout-fallback a { color: #69d7ff; }