:root{--ink:#14212b;--mute:#4a5b68;--bg:#fff;--card:#f3f8f8;--line:#d5e2e3;--brand:#0a6f6c;--btn:#0a6f6c;--btn-ink:#fff}
@media (prefers-color-scheme:dark){:root{--ink:#e8f0f2;--mute:#a9bcc4;--bg:#0f1a20;--card:#16262e;--line:#2a3f49;--brand:#5fd0cb;--btn:#5fd0cb;--btn-ink:#0f1a20}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
header,main,footer{max-width:46rem;margin:0 auto;padding:1rem 16px}header{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;align-items:center;border-bottom:1px solid var(--line)}
.brand{font-weight:700;color:var(--brand);text-decoration:none;margin-right:auto}nav{display:flex;flex-wrap:wrap;gap:.25rem 1rem}nav a{color:var(--ink);text-decoration:none}nav a[aria-current=page]{font-weight:700;text-decoration:underline}
a{color:var(--brand)}h1{font-size:1.9rem;line-height:1.25;margin:1.5rem 0 .75rem}h2{font-size:1.3rem;line-height:1.3;margin:2rem 0 .5rem}.lead{font-size:1.1rem;color:var(--mute)}
.notice{background:var(--card);border-left:4px solid var(--brand);padding:.75rem 1rem}.bridge{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:.5rem 1rem;margin:1rem 0}.bridge dt{font-weight:700;margin-top:.5rem}.bridge dd{margin:0 0 .5rem}
dl.terms dt,dl.faq dt{margin-top:1.25rem;font-weight:700}dl.terms dd,dl.faq dd{margin:.25rem 0 0}.src{font-size:.9rem;color:var(--mute);margin:.5rem 0 0}ul.src{padding-left:1.25rem;margin:.25rem 0}
.actions{margin:2rem 0}.btn{display:inline-block;background:var(--btn);color:var(--btn-ink);padding:.7rem 1.1rem;border-radius:8px;text-decoration:none;font-weight:600;margin:.25rem .25rem .25rem 0}
footer{border-top:1px solid var(--line);color:var(--mute);font-size:.9rem;margin-top:2rem}.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--bg);padding:.5rem}