:root{--bg:#f5f7fa;--card:#fff;--ink:#16202b;--muted:#5f6b7a;--line:#dde3ea;--accent:#32b268;--accent-ink:#fff;--bad:#c0392b}
@media (prefers-color-scheme:dark){:root{--bg:#0f151c;--card:#18212b;--ink:#e8edf2;--muted:#9aa6b4;--line:#2a3542}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,Segoe UI,system-ui,sans-serif}
.top{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:var(--card);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:8px}.brand em{font-style:normal;color:var(--accent)}
.dot{width:12px;height:12px;border-radius:50%;background:var(--accent)}
main{max-width:1000px;margin:0 auto;padding:20px 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:16px}
.narrow{max-width:420px;margin:40px auto}
h1{font-size:22px;margin:0 0 8px}h2{font-size:17px;margin:0 0 10px}
.muted{color:var(--muted)}.small{font-size:13px}.pad{padding:20px}
.stack{display:flex;flex-direction:column;gap:12px}.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
label{display:flex;flex-direction:column;gap:4px;font-weight:600;font-size:14px}
label.inline{flex-direction:row;align-items:center;gap:8px}
input,select,textarea{font:inherit;color:inherit;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-weight:400}
textarea{min-height:90px;resize:vertical}
input[type=color]{padding:2px;height:40px;width:70px}
button{font:inherit;font-weight:600;border:0;border-radius:8px;padding:9px 16px;background:var(--accent);color:var(--accent-ink);cursor:pointer}
button.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
button.link{background:none;color:var(--accent);padding:0;font-weight:500}
button.danger{background:transparent;color:var(--bad);border:1px solid var(--line)}
button.small{padding:5px 10px;font-size:13px}
button:disabled{opacity:.5;cursor:default}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.msg{min-height:1.2em;margin:0;font-size:14px}.msg.bad{color:var(--bad)}
.bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.site-pick{flex-direction:row;align-items:center;gap:8px}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tabs button{background:none;color:var(--muted);border-radius:0;border-bottom:2px solid transparent;white-space:nowrap}
.tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}
pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:12px;overflow-x:auto;white-space:pre-wrap;word-break:break-all;font-size:13px}
.kb{border-top:1px solid var(--line);padding:12px 0}.kb:first-child{border-top:0}
.inbox{display:grid;grid-template-columns:280px 1fr;gap:16px}
@media (max-width:720px){.inbox{grid-template-columns:1fr}}
.convs{max-height:65vh;overflow-y:auto;padding:0}
.conv{display:block;width:100%;text-align:left;background:none;color:var(--ink);border-radius:0;border-bottom:1px solid var(--line);padding:10px 14px;font-weight:400}
.conv[aria-current=true]{background:var(--bg)}
.thread{display:flex;flex-direction:column;gap:8px;max-height:50vh;overflow-y:auto;padding:4px 0 12px}
.bubble{max-width:80%;padding:8px 12px;border-radius:12px;white-space:pre-wrap;word-wrap:break-word;background:var(--bg);border:1px solid var(--line);align-self:flex-start}
.bubble.out{align-self:flex-end;background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.bubble small{display:block;opacity:.75;font-size:11px}
.tag{display:inline-block;font-size:11px;padding:1px 7px;border-radius:99px;background:var(--bg);border:1px solid var(--line);color:var(--muted)}