:root{--bg:#fff;--fg:#14202b;--muted:#53606c;--line:#ccd3da;--accent:#0b5cad;--accent-fg:#fff;--err:#a4161a;--ok:#176a3a}
@media (prefers-color-scheme:dark){:root{--bg:#10171e;--fg:#e7edf3;--muted:#9aa7b3;--line:#2b3744;--accent:#5aa2f0;--accent-fg:#06121f;--err:#ff8a8d;--ok:#6fd49a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,sans-serif}
.bar{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;border-bottom:1px solid var(--line)}
.bar nav{display:flex;gap:1rem;align-items:center}
.brand{font-weight:700;color:var(--fg);text-decoration:none}
main{max-width:34rem;margin:0 auto;padding:1.5rem 1rem 3rem}
a{color:var(--accent)}
.field{margin:0 0 1rem}
label{display:block;font-weight:600;margin-bottom:.25rem}
input{width:100%;padding:.6rem;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);font:inherit}
input:focus-visible,.button:focus-visible,.link:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.button{display:inline-block;padding:.65rem 1.1rem;border:0;border-radius:6px;background:var(--accent);color:var(--accent-fg);font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
.button.secondary{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.link{background:none;border:0;color:var(--accent);padding:0;font:inherit;text-decoration:underline;cursor:pointer}
.inline{display:inline}
.error{color:var(--err);margin:.25rem 0 0;font-weight:600}
.hint{color:var(--muted);font-size:.9rem}
.notice{padding:.6rem .8rem;border:1px solid var(--line);border-radius:6px}
.notice.error{border-color:var(--err)}.notice.success{border-color:var(--ok);color:var(--ok)}
.steps{display:flex;gap:.5rem;list-style:none;padding:0;color:var(--muted);font-size:.9rem}
.steps li+li::before{content:"› ";}
.steps [aria-current]{color:var(--fg);font-weight:700}
.facts dt{font-weight:600}.facts dd{margin:0 0 .75rem}
.foot{max-width:34rem;margin:0 auto;padding:1rem;border-top:1px solid var(--line);font-size:.9rem}
/* The shared sign-up / log-in screen (int_auth) in this site's colours. */
:root{--ia-bg:var(--bg);--ia-card:var(--bg);--ia-ink:var(--fg);--ia-muted:var(--muted);--ia-accent:var(--accent);--ia-accent-ink:var(--accent-fg);--ia-border:var(--line);--ia-error:var(--err);--ia-info:var(--accent)}
.ia-card{box-shadow:none;border:1px solid var(--line);padding:1.25rem}
.ia-check input,input[type=checkbox]{width:auto;margin-top:.3rem}
.ia-check label{font-weight:400}
.google-alt{text-align:center;margin-top:1rem}
.google-alt .hint{margin:0 0 .5rem}
/* The alpha welcome page */
.welcome-actions{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;margin-top:1.5rem}
.check{display:flex;flex-wrap:wrap;gap:.5rem;align-items:flex-start}
.check label{flex:1 1 14rem;font-weight:400}
.check .error{flex-basis:100%}