:root{--ink:#18221d;--muted:#6f7973;--line:#e5e9e6;--green:#315c48;--lime:#dfeccf;--paper:#fbfcfa;--warm:#f5f6f2}*{box-sizing:border-box}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper)}button,textarea{font:inherit}.app{height:100vh;display:grid;grid-template-columns:260px minmax(520px,1fr) 330px}aside{background:#f2f4ef;border-right:1px solid var(--line);padding:24px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;padding:0 8px 24px}.brand .mark{width:34px;height:34px;border-radius:10px;background:var(--ink);color:white;display:grid;place-items:center;font-weight:800}.brand b,.brand small{display:block}.brand small{color:var(--muted);font-size:11px;margin-top:2px}.new{border:1px solid #d9dfda;background:white;border-radius:10px;padding:11px 13px;text-align:left;cursor:pointer}.label{font-size:11px;text-transform:uppercase;letter-spacing:.09em;color:#89918c;margin:28px 8px 10px}.demo{background:#ece4bf;color:#6d5a12;border-radius:5px;padding:2px 5px;margin-left:5px}.visitors{display:grid;gap:5px}.visitor{border:0;background:transparent;border-radius:9px;padding:10px;text-align:left;cursor:pointer}.visitor:hover,.visitor.active{background:white;box-shadow:0 1px 0 #e2e7e3}.visitor b{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.visitor small{color:var(--muted)}.score{float:right;color:var(--green);font-weight:700}.aside-foot{margin-top:auto;border-top:1px solid #dde2de;padding:16px 8px 0;display:flex;gap:9px;align-items:center}.aside-foot b,.aside-foot small{display:block;font-size:11px}.aside-foot small{color:var(--muted);margin-top:3px}.pulse{width:8px;height:8px;border-radius:50%;background:#70a27e;box-shadow:0 0 0 4px #dfeadf}main{min-width:0;display:flex;flex-direction:column;background:white}header{height:78px;border-bottom:1px solid var(--line);padding:17px 28px;display:flex;align-items:center;justify-content:space-between}h1{font-size:17px;margin:0}header p{font-size:12px;color:var(--muted);margin:5px 0 0}.status{font-size:11px;border:1px solid var(--line);border-radius:99px;padding:6px 10px}.status span{display:inline-block;width:6px;height:6px;border-radius:50%;background:#76a586;margin-right:6px}.messages{flex:1;overflow:auto;padding:28px max(28px,8vw)}.hero{max-width:650px;margin:11vh auto 0;text-align:center}.orb{width:54px;height:54px;border-radius:18px;background:var(--lime);display:grid;place-items:center;margin:auto;font-size:24px}.hero h2{font-family:Georgia,"Noto Serif SC",serif;font-size:27px;margin:20px 0 10px}.hero p{color:var(--muted);font-size:14px;line-height:1.7}.chips{display:flex;justify-content:center;gap:8px;margin-top:22px;flex-wrap:wrap}.chips button{border:1px solid var(--line);background:var(--paper);border-radius:99px;padding:8px 12px;font-size:12px;cursor:pointer}.message{max-width:720px;margin:0 auto 24px}.message.user{display:flex;justify-content:flex-end}.bubble{padding:12px 15px;border-radius:15px;line-height:1.7;font-size:14px;white-space:pre-wrap}.user .bubble{background:#eef2eb;max-width:78%}.assistant .bubble{padding:0}.meta{font-size:10px;color:#929b95;margin-top:8px}.thinking{color:var(--muted);display:flex;gap:8px;align-items:center}.thinking i{width:7px;height:7px;background:var(--green);border-radius:50%;animation:pulse 1s infinite}@keyframes pulse{50%{opacity:.25}}form{padding:10px max(28px,8vw) 22px}.notice{max-width:720px;margin:auto;color:#876f19;background:#fff9df;border:1px solid #eee1a8;border-bottom:0;border-radius:11px 11px 0 0;padding:7px 12px;font-size:10px}.input{max-width:720px;margin:auto;border:1px solid #cfd6d1;border-radius:0 0 14px 14px;padding:9px 9px 9px 14px;display:flex;align-items:flex-end;box-shadow:0 5px 22px #1b2b210c}.input textarea{border:0;resize:none;outline:none;flex:1;line-height:1.5;max-height:130px}.input button{width:34px;height:34px;border:0;border-radius:10px;background:var(--ink);color:white;font-size:20px;cursor:pointer}form>small{display:block;text-align:center;color:#9aa19d;font-size:9px;margin-top:8px}.detail{border-left:1px solid var(--line);background:var(--warm);padding:24px}.detail-head{display:flex;justify-content:space-between;font-size:12px}.detail-head span{color:var(--green);font-size:10px}.empty{height:70%;display:grid;place-content:center;text-align:center;color:var(--muted);font-size:12px;line-height:1.6}.empty-icon{font-size:28px}.card{background:white;border:1px solid var(--line);border-radius:13px;padding:14px;margin-top:14px}.card label{font-size:9px;color:#8b948e;text-transform:uppercase;letter-spacing:.08em}.card h3{font-size:15px;margin:7px 0}.kv{display:grid;grid-template-columns:1fr auto;gap:9px;font-size:11px;padding:7px 0;border-top:1px solid #eef0ee}.kv span:last-child{font-weight:600}.event{border-left:2px solid #cbdcc2;padding:0 0 14px 11px;font-size:11px}.event small{display:block;color:var(--muted);margin-top:3px}@media(max-width:1050px){.app{grid-template-columns:230px 1fr}.detail{display:none}}@media(max-width:720px){.app{grid-template-columns:1fr}aside{display:none}.messages,form{padding-left:18px;padding-right:18px}}