:root{--black:#090909;--ink:#15171a;--muted:#667085;--surface:#fff;--bg:#f1f3f5;--line:#dfe3e8;--green:#16a34a;--red:#dc2626}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,sans-serif}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.shell{min-height:100vh;display:grid;grid-template-columns:minmax(260px,390px) minmax(0,780px);justify-content:center;padding:26px;gap:20px}.intro,.chat{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden}.intro{background:#090909;color:#fff;padding:34px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:850}.brand img{width:46px;height:46px}.intro h1{font-size:40px;line-height:1.05;margin:58px 0 15px}.intro p{color:#bbb;line-height:1.6}.quick-links{margin-top:auto;display:grid;gap:10px}.quick-links a{color:#fff;text-decoration:none;border:1px solid #333;border-radius:11px;padding:13px}.chat{display:flex;flex-direction:column;height:calc(100vh - 52px);min-height:620px}.chat-head{padding:19px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}.agent{width:42px;height:42px;border-radius:50%;background:#111;color:#fff;display:grid;place-items:center;font-weight:900}.online{font-size:12px;color:var(--green)}.messages{padding:22px;overflow:auto;flex:1;display:flex;flex-direction:column;gap:14px}.message{max-width:88%;padding:13px 15px;border-radius:16px;line-height:1.48;white-space:pre-line}.message.bot{background:#f0f1f3;border-bottom-left-radius:4px}.message.user{background:#111;color:#fff;margin-left:auto;border-bottom-right-radius:4px}.choices{display:flex;flex-wrap:wrap;gap:9px}.choice{border:1px solid #c9cdd3;background:#fff;border-radius:99px;padding:10px 13px;cursor:pointer;font:inherit;font-weight:650;text-decoration:none;color:#111}.choice:hover,.choice:focus{background:#111;color:#fff}.answer{border:1px solid var(--line);padding:15px;border-radius:14px}.answer h3{margin:0 0 6px}.answer button{margin-top:10px}.composer{border-top:1px solid var(--line);padding:15px;display:flex;gap:10px}.composer input{flex:1;border:1px solid #c6cad0;border-radius:12px;padding:14px;font:inherit}.composer button,.btn{border:0;background:#111;color:#fff;border-radius:11px;padding:12px 17px;font-weight:800;text-decoration:none;cursor:pointer}.typing{color:var(--muted);font-size:13px}.notice{font-size:12px;color:var(--muted);text-align:center;padding:0 15px 12px}@media(max-width:780px){.shell{display:block;padding:0}.intro{display:none}.chat{height:100vh;min-height:0;border:0;border-radius:0}.message{max-width:94%}}