:root{--bg:#fff;--fg:#14213d;--muted:#5b6478;--line:#d9deea;--accent:#1d4ed8;--red:#b42318;--ok:#067647}
@media (prefers-color-scheme:dark){:root{--bg:#0f1524;--fg:#e8ecf6;--muted:#98a2b8;--line:#2a3350;--accent:#6d9bff;--red:#ff8a80;--ok:#5fd4a0}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,Tahoma,sans-serif}
.bar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:8px}
.brand{font-weight:700;color:var(--fg);text-decoration:none}nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
a{color:var(--accent)}main{max-width:760px;margin:0 auto;padding:24px 16px}
footer{max-width:760px;margin:0 auto;padding:16px;display:flex;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line)}
.card{border:1px solid var(--line);border-radius:10px;padding:16px;margin:16px 0}.card.danger{border-color:var(--red)}
label{display:block;margin:12px 0}input,textarea{display:block;width:100%;padding:10px;margin-top:6px;border:1px solid var(--line);border-radius:8px;background:transparent;color:inherit;font:inherit}
.btn{display:inline-block;padding:10px 18px;border:0;border-radius:8px;background:var(--accent);color:#fff;font:inherit;text-decoration:none;cursor:pointer}.btn.red{background:var(--red)}
.link{background:none;border:0;color:var(--accent);font:inherit;cursor:pointer;padding:0}.inline{display:inline}
.err{color:var(--red)}.ok{color:var(--ok)}.muted,small{color:var(--muted)}.plain{list-style:none;padding:0;margin:0}
.hero{padding:32px 0}h1{line-height:1.3}
.kb{padding:8px 0;border-bottom:1px solid var(--line)}.reply{margin:8px 0;padding:10px 14px;border-inline-start:3px solid var(--accent);background:rgba(127,127,127,.08)}
.badge{display:inline-block;padding:1px 10px;border-radius:99px;border:1px solid var(--line);font-size:.85em}.st-ready,.s-DRAFT,.s-ACK{color:var(--ok);border-color:var(--ok)}.st-error,.s-BLOCKED,.s-ERROR{color:var(--red);border-color:var(--red)}fieldset{border:1px solid var(--line);border-radius:8px;margin:12px 0}select{padding:8px;border-radius:8px;background:transparent;color:inherit;border:1px solid var(--line);font:inherit}.orig{margin:0 0 8px;padding:8px 12px;background:rgba(127,127,127,.08);border-radius:8px}summary{cursor:pointer}