:root{--bg:#fff;--fg:#14213d;--muted:#51607a;--brand:#0b6e4f;--soft:#f2f6f4;--line:#dbe3df}
@media (prefers-color-scheme:dark){:root{--bg:#10151c;--fg:#e8edf2;--muted:#9fb0c2;--brand:#4fd1a1;--soft:#18202a;--line:#2a3542}}
*{box-sizing:border-box}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg)}
.wrap{max-width:860px;margin:0 auto;padding:0 16px}
a{color:var(--brand)}
header.site{border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;padding:14px 16px}
.logo{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--fg)}
header nav a{margin-right:16px;text-decoration:none;color:var(--fg)}
header nav a:hover{color:var(--brand)}
h1{font-size:clamp(1.8rem,5vw,2.6rem);line-height:1.2;margin:.6em 0 .3em}
h2{font-size:1.5rem;margin:1.8em 0 .5em}
.lead{font-size:1.2rem;color:var(--muted)}
.answer{background:var(--soft);border-left:4px solid var(--brand);padding:12px 16px;border-radius:6px}
.crumbs{font-size:.9rem;color:var(--muted);margin-top:16px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.card{display:block;border:1px solid var(--line);border-radius:10px;padding:14px 16px;text-decoration:none;color:var(--fg);background:var(--soft)}
.card h3{margin:0 0 4px;font-size:1.05rem;color:var(--brand)}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;padding:12px 22px;border-radius:8px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
@media (prefers-color-scheme:dark){.btn{color:#10151c}}
.cta{background:var(--soft);border-radius:12px;padding:8px 24px 24px;margin:40px 0;text-align:center}
details{border-bottom:1px solid var(--line);padding:10px 0}
summary{cursor:pointer;font-weight:600}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.form{display:grid;gap:12px;max-width:480px}
.form label{display:grid;gap:4px;font-weight:600}
.form input,.form textarea{font:inherit;padding:10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg)}
ul.plain{padding-left:20px}
footer.site{border-top:1px solid var(--line);margin-top:48px;padding:20px 0;color:var(--muted);font-size:.9rem}