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import type { ReactNode } from "react";
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import { Link } from "react-router";
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import { ContactEmail } from "@/client/components/ui/contact-email";
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import { useClientConfig } from "@/client/lib/config";
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const Section = ({ title, children }: { title: string; children: ReactNode }) => (
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  <section className="mt-12">
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    <h2 className="mb-4 font-display text-xl font-semibold text-zinc-100">{title}</h2>
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    <div className="space-y-4 text-base leading-[1.7] text-zinc-300">{children}</div>
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  </section>
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);
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export const TermsPage = () => {
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  const config = useClientConfig();
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  if (!config || config.status !== "ok") return null;
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  const { operatorName, operatorContactEmail } = config;
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  return (
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    <div className="mx-auto max-w-2xl py-12 sm:py-20">
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      <p className="mb-6 text-[11px] font-medium uppercase tracking-[0.18em] text-zinc-500">Terms of service</p>
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      <h1 className="mb-6 font-display text-[clamp(2rem,5.5vw,3.25rem)] font-semibold leading-[1.05] tracking-tight text-zinc-100">
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        Terms of service
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      </h1>
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      <p className="mb-10 text-sm text-zinc-500">Effective April 27, 2026.</p>
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      <p className="max-w-[60ch] text-base leading-[1.7] text-zinc-300">
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        These terms govern your use of tessera, a single sign-on service operated by {operatorName} ("we", "us"). By
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        accepting an invite, signing in, or otherwise using tessera you agree to these terms. If you do not agree, do
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        not use the service.
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      </p>
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      <Section title="The service">
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        <p>
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          tessera is an OAuth 2.1 and OpenID Connect provider. It authenticates users on behalf of applications
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          registered by an administrator and issues identity tokens that those applications can verify. tessera is
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          intended to be operated as private infrastructure for a small group of invited users.
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        </p>
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      </Section>
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      <Section title="Eligibility and accounts">
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        <p>
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          tessera is invite-only. You may use the service only if an administrator has minted an invite for your email
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          address and you accept it. You must be at least 13 years old. Signing in with Google or GitHub does not create
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          an account; you must already have a tessera account and have explicitly linked that identity from your account
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          page.
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        </p>
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        <p>
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          You are responsible for keeping your password and any linked identity providers secure. You are responsible
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          for all activity that occurs under your account. Notify us promptly at{" "}
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          <ContactEmail address={operatorContactEmail} /> if you believe your account has been accessed without your
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          authorization.
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        </p>
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      </Section>
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      <Section title="Acceptable use">
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        <p>You agree not to:</p>
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        <ul className="list-disc space-y-2 pl-6">
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          <li>Use tessera to violate any law or any third party's rights.</li>
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          <li>Attempt to access another user's account or to bypass authentication, rate limits, or invite gates.</li>
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          <li>
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            Probe, scan, or test the vulnerability of the service or related infrastructure without prior written
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            permission.
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          </li>
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          <li>
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            Submit automated traffic intended to disrupt the service or to enumerate accounts, invites, or OAuth
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            clients.
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          </li>
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          <li>
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            Reverse engineer, decompile, or otherwise attempt to extract source code from the running service, except to
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            the extent permitted by law. (The tessera source itself is published under its own license; this clause
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            concerns the operating service.)
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          </li>
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        </ul>
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        <p>
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          We may suspend or terminate access for any user who violates these rules or whose use of the service creates a
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          security or operational risk.
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        </p>
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      </Section>
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      <Section title="Third-party identity providers">
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        <p>
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          If you choose to link a Google or GitHub identity to your tessera account, your use of those providers is also
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          governed by the providers' own terms. We are not responsible for the availability or behavior of third-party
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          identity providers.
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        </p>
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      </Section>
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      <Section title="Privacy">
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        <p>
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          Our handling of personal information is described in the{" "}
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          <Link
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            to="/privacy"
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            className="text-zinc-100 underline decoration-zinc-700 underline-offset-[6px] transition-colors hover:text-accent-400 hover:decoration-accent-500/60"
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          >
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            privacy policy
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          </Link>
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          , which is incorporated into these terms by reference.
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        </p>
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      </Section>
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      <Section title="Service availability and changes">
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        <p>
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          tessera is provided on a best-effort basis and may be unavailable from time to time for maintenance, upgrades,
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          or reasons outside our control. We may add, remove, or change features at any time. We may also update these
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          terms; material changes will be communicated through the service or by email.
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        </p>
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      </Section>
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      <Section title="No warranty">
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        <p>
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          tessera is provided "as is" and "as available" without warranties of any kind, whether express or implied,
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          including warranties of merchantability, fitness for a particular purpose, non-infringement, and that the
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          service will be uninterrupted or error-free. You use the service at your own risk.
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        </p>
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      </Section>
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      <Section title="Limitation of liability">
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        <p>
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          To the maximum extent permitted by law, {operatorName} and its operators will not be liable for any indirect,
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          incidental, special, consequential, or punitive damages, or for any loss of profits, revenues, data, or
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          goodwill, arising out of or in connection with your use of the service. Our total liability for any claim
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          arising from these terms or the service is limited to one hundred US dollars (US $100).
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        </p>
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      </Section>
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      <Section title="Termination">
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        <p>
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          You may stop using tessera at any time and may delete your account by emailing{" "}
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          <ContactEmail address={operatorContactEmail} /> from the address on file. We may suspend or terminate your
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          account for any reason, including violation of these terms or operational necessity. Upon termination, your
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          right to use the service ends immediately; provisions that by their nature should survive termination,
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          including disclaimers, limitations of liability, and governing law, will survive.
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        </p>
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      </Section>
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      <Section title="Governing law and disputes">
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        <p>
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          These terms are governed by the laws of the State of California, without regard to its conflict-of-laws rules.
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          The exclusive venue for any dispute arising out of these terms or the service is the state and federal courts
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          located in San Francisco County, California, and you consent to the personal jurisdiction of those courts.
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          Nothing in these terms limits any rights you may have under applicable consumer protection laws.
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        </p>
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      </Section>
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      <Section title="Contact">
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        <p>
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          Questions about these terms can be sent to <ContactEmail address={operatorContactEmail} />.
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        </p>
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      </Section>
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    </div>
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  );
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};