:root{--ink:#18352b;--green:#168b53;--green2:#0f7243;--pale:#eef7f1;--line:#dce8df;--muted:#718078;--danger:#b64f3b;--paper:#fbfcfa}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}.hidden{display:none!important}button,input,textarea,select{font:inherit}.login-shell{min-height:100vh;display:grid;place-items:center;padding:30px;background:radial-gradient(circle at 15% 10%,#dcefe3,transparent 35%),linear-gradient(145deg,#f8fbf8,#eef4f0)}.login-card{width:min(430px,100%);padding:42px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 28px 80px rgba(27,67,49,.12)}.brand-mark{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;color:#fff;background:var(--green);font:700 24px Georgia}.brand-mark.small{width:38px;height:38px;border-radius:11px;font-size:19px}.eyebrow{margin:20px 0 5px;color:var(--green);font-size:11px;font-weight:800;letter-spacing:.13em}.login-card h1{margin:0;font:600 30px Georgia,"Songti SC",serif}.muted{color:var(--muted);line-height:1.7}.login-card label{display:grid;gap:7px;margin-top:18px;font-size:13px;font-weight:700}.login-card input,.upload-card input,.upload-card select{height:45px;border:1px solid #ccdcd1;border-radius:10px;padding:0 12px;background:#fbfdfb}.login-card button,.composer button,.upload-card button{height:45px;border:0;border-radius:10px;color:#fff;background:var(--green);font-weight:750;cursor:pointer}.login-card button{width:100%;margin-top:24px}.login-card button:hover,.composer button:hover,.upload-card button:hover{background:var(--green2)}.error{min-height:18px;color:var(--danger);font-size:12px}.workspace{display:grid;grid-template-columns:244px 1fr;min-height:100vh}aside{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:24px 16px;border-right:1px solid var(--line);background:#f3f8f4}.aside-brand{display:flex;align-items:center;gap:11px;padding:0 8px 25px}.aside-brand strong,.aside-brand span{display:block}.aside-brand strong{font-size:15px}.aside-brand span{margin-top:3px;color:var(--muted);font-size:10px}.nav{width:100%;padding:12px 13px;border:0;border-radius:9px;color:#496358;background:transparent;text-align:left;cursor:pointer}.nav.active{color:#fff;background:var(--green);font-weight:700}.aside-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding:14px 8px 0;border-top:1px solid var(--line);font-size:11px}.aside-foot button{border:0;color:var(--danger);background:none;cursor:pointer}main{min-width:0}.view{min-height:100vh;display:flex;flex-direction:column}.view>header{display:flex;align-items:center;justify-content:space-between;padding:28px 36px 20px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.92)}header .eyebrow{margin:0 0 5px}header h2{margin:0;font:600 24px Georgia,"Songti SC",serif}.status{padding:6px 10px;border-radius:999px;color:#7a641f;background:#fff3c9;font-size:11px}.status.ok{color:#196d44;background:#e4f4e9}.messages{flex:1;width:min(920px,100%);margin:0 auto;padding:34px 30px 180px}.message{display:flex;gap:13px;margin-bottom:28px}.message.user{justify-content:flex-end}.message.user .bubble{order:-1;color:#fff;background:var(--green)}.avatar{flex:0 0 34px;height:34px;display:grid;place-items:center;border-radius:10px;color:#fff;background:#173f30;font-size:10px;font-weight:800}.bubble,.message.assistant>div:last-child{max-width:760px;padding:14px 17px;border:1px solid var(--line);border-radius:14px;background:#fff;line-height:1.75;white-space:pre-wrap}.message.welcome>div:last-child{background:var(--pale)}.message p{margin:6px 0}.sources{display:grid;gap:7px;margin-top:13px}.source{padding:9px 11px;border-left:3px solid #8bc8a5;border-radius:6px;background:#f4f8f5;font-size:11px}.source strong,.source span{display:block}.source span{margin-top:3px;color:var(--muted)}.composer{position:fixed;left:244px;right:0;bottom:0;width:min(920px,calc(100% - 304px));margin:0 auto 24px;padding:13px;border:1px solid #cfe0d4;border-radius:16px;background:#fff;box-shadow:0 18px 45px rgba(27,67,49,.15)}.composer textarea{width:100%;resize:none;border:0;outline:0;padding:7px;line-height:1.5}.composer>div{display:flex;align-items:center;justify-content:space-between;gap:15px}.composer span{color:var(--muted);font-size:10px}.composer button{padding:0 20px}.upload-card,.table-card{margin:25px 36px 0;border:1px solid var(--line);border-radius:15px;background:#fff}.upload-card{display:grid;grid-template-columns:1.5fr 1fr 140px 140px 90px auto;gap:10px;align-items:end;padding:20px}.upload-card h3{margin:0}.upload-card p{margin:5px 0 0;color:var(--muted);font-size:11px}.upload-card button{padding:0 16px}.upload-card #upload-result{grid-column:1/-1}.table-card{overflow:auto}table{width:100%;border-collapse:collapse;font-size:12px}th,td{padding:13px 15px;border-bottom:1px solid #e8eee9;text-align:left}th{color:#6a7d73;background:#f7faf8;font-size:10px}.delete{border:0;color:var(--danger);background:none;cursor:pointer}.secondary{height:34px;padding:0 13px;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:#fff;cursor:pointer}@media(max-width:800px){.workspace{grid-template-columns:1fr}aside{position:static;height:auto}.aside-brand{padding-bottom:12px}aside nav{display:flex}.aside-foot{margin-top:10px}.view>header{padding:20px}.messages{padding:25px 16px 190px}.composer{left:16px;right:16px;width:auto;margin-bottom:16px}.upload-card{margin:16px;grid-template-columns:1fr}.table-card{margin:16px}.upload-card #upload-result{grid-column:auto}}