:root{--brand:#1c8f86;--brand-d:#14706a;--gold:#c9a24b;--ink:#04222b;--text:#33424a;--bg:#f4f7f7;--card:#fff;--border:#e2e8e8;--danger:#c0564b;--radius:10px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px}button{border-radius:var(--radius);background:var(--brand);color:#fff;cursor:pointer;border:0;padding:7px 14px;font-size:13px}button:hover{background:var(--brand-d)}button:disabled{opacity:.45;cursor:not-allowed}button.danger{background:var(--danger)}button.ghost{color:var(--text);border:1px solid var(--border);background:0 0}button.sm{padding:3px 10px;font-size:12px}input,textarea{border:1px solid var(--border);border-radius:var(--radius);width:100%;color:var(--text);background:#fff;outline:none;padding:9px 12px;font-size:13px}input:focus,textarea:focus{border-color:var(--brand)}.empty{color:#8fa0a6;text-align:center;padding:20px}.empty.big{padding-top:120px;font-size:15px}.login-bg{background:linear-gradient(135deg, var(--ink) 0%, #0a3a40 55%, var(--brand-d) 100%);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--card);border-radius:16px;flex-direction:column;gap:14px;width:340px;padding:38px 34px;display:flex;box-shadow:0 18px 60px #04222b59}.login-card h1{color:var(--ink);text-align:center;margin-bottom:6px;font-size:19px}.login-card .err{color:var(--danger);text-align:center;font-size:12px}.shell{flex-direction:column;height:100vh;display:flex}header{background:var(--card);border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:22px;height:52px;padding:0 22px;display:flex}.brand{color:var(--ink);align-items:center;gap:8px;font-weight:700;display:flex}.brand-dot{background:var(--brand);border-radius:3px;width:10px;height:10px;display:inline-block}nav{flex:1;gap:6px;display:flex}nav button{color:var(--text);background:0 0;padding:6px 14px}nav button.on{background:var(--brand);color:#fff}main{flex:1;display:flex;overflow:hidden}main>*{flex:1}.toast{background:var(--ink);color:#fff;z-index:99;border-radius:8px;padding:9px 20px;animation:.18s pop;position:fixed;top:64px;left:50%;transform:translate(-50%);box-shadow:0 8px 24px #04222b4d}@keyframes pop{0%{opacity:0;transform:translate(-50%,-6px)}}.conv-layout{height:100%;display:flex}.conv-layout aside{border-right:1px solid var(--border);background:var(--card);flex-shrink:0;width:300px;overflow-y:auto}.conv-item{border-bottom:1px solid var(--border);cursor:pointer;padding:12px 16px}.conv-item:hover{background:#f2f8f8}.conv-item.sel{border-left:3px solid var(--brand);background:#e8f3f2}.conv-item .row1{justify-content:space-between;align-items:center;gap:8px;display:flex}.ctitle{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.row2{color:#8fa0a6;margin-top:4px;font-size:12px}.tag{border-radius:20px;flex-shrink:0;padding:2px 8px;font-size:11px}.s-bot{color:#68767c;background:#eef2f2}.s-wait{color:#9a7420;background:#f6ecd9}.s-human{color:var(--brand-d);background:#e0f0ee}.s-closed{color:#999;background:#ececec}.chat{background:var(--card);flex-direction:column;flex:1;min-width:0;height:100%;display:flex}.chat-head{border-bottom:1px solid var(--border);background:var(--card);align-items:center;gap:10px;padding:12px 18px;display:flex}.chat-head .spacer{flex:1}.msgs{flex-direction:column;flex:1;gap:10px;padding:18px;display:flex;overflow-y:auto}.bubble-row{display:flex}.bubble-row.u,.bubble-row.a{justify-content:flex-end}.bubble{background:var(--card);border:1px solid var(--border);border-radius:12px;max-width:72%;padding:8px 12px}.u .bubble{background:#eef2f2}.a .bubble{background:var(--brand);color:#fff;border-color:var(--brand)}.a .who{color:#ffffffbf}.who{color:#8fa0a6;margin-bottom:3px;font-size:11px}.txt{white-space:pre-wrap;word-break:break-word;line-height:1.55}.chat-input{border-top:1px solid var(--border);background:var(--card);gap:10px;padding:14px 18px;display:flex}.table-wrap{background:var(--card);padding:20px;overflow:auto}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--border);padding:10px 12px}th{color:#8fa0a6;font-size:12px;font-weight:500}.mono{font-family:ui-monospace,Consolas,monospace;font-size:12px}.stats{padding:22px;overflow:auto}.cards{grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px;display:grid}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:4px;padding:18px;display:flex}.card b{color:var(--ink);font-size:26px}.card span{color:#8fa0a6;font-size:12px}.chart{background:var(--card);border:1px solid var(--border);border-radius:12px;max-width:640px;padding:18px}.chart h3{color:var(--ink);margin-bottom:12px;font-size:14px}.bar-row{align-items:center;gap:10px;margin:8px 0;display:flex}.day{color:#8fa0a6;width:42px;font-size:12px}.bar{background:var(--brand);border-radius:4px;min-width:2px;height:16px;transition:width .3s}.num{color:var(--text);font-size:12px}.kb{gap:20px;padding:22px;display:flex;overflow:auto}.kb-form{background:var(--card);border:1px solid var(--border);border-radius:12px;flex-direction:column;flex-shrink:0;gap:12px;width:380px;height:fit-content;padding:18px;display:flex}.kb-form h3,.kb-list h3{color:var(--ink);font-size:14px}.kb-form .hint{color:var(--brand-d);font-size:12px}.kb-list{background:var(--card);border:1px solid var(--border);border-radius:12px;flex:1;padding:18px}.doc{border-bottom:1px solid var(--border);align-items:center;gap:14px;padding:10px 4px;display:flex}.doc b{color:var(--ink);flex:1}.doc span{color:#8fa0a6;font-size:12px}