:root{
  --bg:#f6f7fb; --card:#fff; --ink:#14142b; --muted:#5b5f7a; --line:#e2e4f0;
  --brand:#3B2FE0; --brand-ink:#fff; --accent:#00D9A3; --bot:#eef0ff; --me:#3B2FE0; --me-ink:#fff; --err:#c0262d; --warn:#fff6dd; --warn-line:#f0d98a;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0e0f1a; --card:#171826; --ink:#eef0ff; --muted:#a3a7c6; --line:#2a2c44; --bot:#222441; --warn:#2a2410; --warn-line:#6b5a1d; --err:#ff8a8f; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
.top{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;max-width:760px;margin:0 auto}
.brand{display:flex;align-items:center;gap:8px;color:var(--ink);text-decoration:none;font-weight:600}
.brand b{color:var(--brand)}
.dot{width:12px;height:12px;border-radius:50%;background:var(--accent);display:inline-block}
.demo-tag{font-size:12px;border:1px solid var(--line);border-radius:999px;padding:1px 8px;color:var(--muted)}
.lang button{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:6px 12px;cursor:pointer;font:inherit}
.lang button:first-child{border-radius:8px 0 0 8px}.lang button:last-child{border-radius:0 8px 8px 0;border-left:0}
.lang button.on{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
main{max-width:760px;margin:0 auto;padding:0 16px 32px}
h1{font-size:clamp(24px,5vw,34px);line-height:1.2;margin:12px 0 8px}
h2{font-size:15px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin:24px 0 8px}
.sub{color:var(--muted);margin:0}
.profiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.pcard{background:var(--card);border:2px solid var(--line);border-radius:14px;padding:14px;text-align:left;cursor:pointer;color:var(--ink);font:inherit}
.pcard:hover{border-color:var(--brand)}
.pcard[aria-checked="true"]{border-color:var(--brand);box-shadow:0 0 0 3px rgba(59,47,224,.18)}
.pcard .ico{font-size:26px;display:block}
.pcard strong{display:block;margin-top:4px}
.pcard span.d{display:block;color:var(--muted);font-size:14px}
.notice{background:var(--warn);border:1px solid var(--warn-line);border-radius:12px;padding:12px 14px;margin:20px 0 12px;font-size:14px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin:8px 0}
.consent input{margin-top:4px;width:18px;height:18px;flex:none}
.ts{margin:8px 0}
.btn{background:var(--brand);color:var(--brand-ink);border:0;border-radius:12px;padding:12px 22px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.small{padding:10px 16px}
.btn.ghost{background:transparent;color:var(--brand);border:2px solid var(--brand)}
.link{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;text-decoration:underline;padding:4px}
.err{color:var(--err);margin:8px 0}
.chat-head{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;margin:8px 0}
.chip-ai{background:var(--accent);color:#06322a;border-radius:6px;padding:2px 8px;font-size:12px;font-weight:700;margin-right:6px}
.log{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;min-height:280px;max-height:55vh;overflow:auto;display:flex;flex-direction:column;gap:10px}
.m{max-width:85%;padding:10px 14px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word}
.m.bot{background:var(--bot);align-self:flex-start;border-bottom-left-radius:4px}
.m.me{background:var(--me);color:var(--me-ink);align-self:flex-end;border-bottom-right-radius:4px}
.m.typing{color:var(--muted);font-style:italic}
.bk{border:2px solid var(--accent);border-radius:14px;padding:12px 14px;align-self:stretch;background:var(--card)}
.bk h3{margin:0 0 4px;font-size:16px}
.bk p{margin:2px 0}
.bk .msg{margin-top:8px;padding:8px 10px;border-radius:10px;background:var(--bot);font-size:14px}
.bk .msg small{display:block;color:var(--muted);margin-bottom:2px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.chips button{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:6px 12px;cursor:pointer;font:inherit;font-size:14px}
.chips button:hover{border-color:var(--brand)}
.form{display:flex;gap:8px}
.form input{flex:1;min-width:0;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:12px;font:inherit}
.small-note{color:var(--muted);font-size:13px}
.cta{margin-top:24px;text-align:center;border-top:1px solid var(--line);padding-top:20px}
footer{max-width:760px;margin:0 auto;padding:16px;color:var(--muted);font-size:14px;text-align:center}
footer a,.legal a{color:var(--muted)}
.legal{max-width:760px;margin:0 auto;padding:16px}
.legal h1{font-size:28px}
.draft{background:var(--warn);border:1px solid var(--warn-line);border-radius:12px;padding:12px 14px}
table.t{width:100%;border-collapse:collapse;font-size:14px;margin:8px 0 24px}
table.t th,table.t td{border-bottom:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}