:root{--bg: #f6f7f9;--card: #fff;--line: #e8eaed;--text: #1f2328;--muted: #6b7280;--brand: #2563eb;--danger: #dc2626;--ok: #10b981;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-size:14px}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}a{color:var(--brand)}.btn{padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--text);transition:.15s}.btn:hover:not(:disabled){background:#f3f4f6}.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover:not(:disabled){background:#1d4ed8}.btn-danger{color:var(--danger);border-color:#fecaca}.btn-danger:hover:not(:disabled){background:#fef2f2}.btn-sm{padding:5px 10px;font-size:13px}.btn-link{background:none;border:none;color:var(--brand);padding:4px 8px;border-radius:6px}.btn-link:hover:not(:disabled){background:#eff6ff}.input{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:8px;outline:none;background:#fff}.input:focus{border-color:var(--brand);box-shadow:0 0 0 3px #2563eb1f}.input:disabled{background:#f9fafb;color:var(--muted)}.card{background:var(--card);border:1px solid var(--line);border-radius:12px}.muted{color:var(--muted)}.small{font-size:12px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:20px;background:#f1f3f5;color:var(--muted)}.tag-ai{background:#eff6ff;color:#2563eb}.tag-wait{background:#fff7ed;color:#ea580c}.tag-human{background:#ecfdf5;color:#059669}.tag-closed{background:#f3f4f6;color:#9ca3af}.row{display:flex;align-items:center;gap:10px}.spread{display:flex;align-items:center;justify-content:space-between}.empty{text-align:center;color:var(--muted);padding:40px 20px}table{width:100%;border-collapse:collapse}th{text-align:left;font-weight:500;font-size:12px;color:var(--muted);padding:10px 12px;background:#fafbfc}td{padding:11px 12px;border-top:1px solid #f1f3f5}.modal-bg{position:fixed;top:0;right:0;bottom:0;left:0;background:#11182773;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal{background:#fff;border-radius:14px;padding:24px;width:100%;max-width:440px}.modal h2{font-size:16px;margin-bottom:16px}.field{margin-bottom:14px}.field label{display:block;font-size:13px;margin-bottom:6px}.err{color:var(--danger);font-size:13px;min-height:18px;margin-top:10px}