:root{--bg: #f5f7fa;--bg-panel: #ffffff;--bg-sidebar: #fbfcfe;--border: #e6e9f0;--text: #1f2430;--text-secondary: #6b7280;--text-muted: #9aa1b0;--accent: #2f6bff;--accent-hover: #2457d6;--accent-soft: #e6eefc;--danger: #e5484d;--success: #16a34a;--warning: #d97706;--radius: 10px;--shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}button{font-family:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:8px;padding:8px 14px;font-size:14px;cursor:pointer;transition:background .15s,border-color .15s,color .15s;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-secondary{background:#fff;color:var(--accent);border-color:var(--accent)}.btn-secondary:hover:not(:disabled){background:#f0f5ff}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:#c93a3f}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:var(--border)}.btn-ghost:hover:not(:disabled){background:#f1f3f7}.btn-lg{padding:12px 20px;font-size:15px;width:100%}.btn-new{width:100%}.app-layout{display:flex;height:100vh;overflow:hidden}.main-panel{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg-panel)}.full-height{height:100vh}.sidebar{width:288px;min-width:288px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-header{padding:16px;border-bottom:1px solid var(--border)}.brand{font-size:16px;font-weight:700;margin-bottom:12px;color:var(--text)}.session-list{flex:1;overflow-y:auto;padding:8px}.sidebar-hint{padding:24px 8px;text-align:center;color:var(--text-muted)}.session-item{display:flex;align-items:center;gap:6px;padding:10px 12px;border-radius:8px;cursor:pointer;margin-bottom:2px}.session-item:hover{background:#eef2f8}.session-item.active{background:var(--accent-soft)}.session-item-main{flex:1;min-width:0}.session-title{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-meta{display:flex;align-items:center;gap:8px;margin-top:4px}.session-time{color:var(--text-muted);font-size:12px}.session-delete{border:none;background:transparent;color:var(--text-muted);font-size:18px;line-height:1;cursor:pointer;padding:2px 6px;border-radius:6px;opacity:0}.session-item:hover .session-delete{opacity:1}.session-delete:hover{background:#e8eaef;color:var(--danger)}.sidebar-footer{border-top:1px solid var(--border);padding:12px 16px}.user-row{display:flex;align-items:center;gap:8px;margin-top:12px}.user-avatar{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;overflow:hidden;flex-shrink:0}.user-avatar img{width:100%;height:100%;object-fit:cover}.user-name{flex:1;font-size:13px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;padding:1px 8px;border-radius:999px;background:#f1f3f7;color:var(--text-secondary);white-space:nowrap}.status-badge.status-running{background:#e6f0ff;color:var(--accent)}.status-badge.status-running:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 1.2s ease-in-out infinite}.status-badge.status-done{background:#e8f7ee;color:var(--success)}.status-badge.status-failed{background:#fdeaea;color:var(--danger)}.status-badge.status-active{background:#f1f3f7;color:var(--text-secondary)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.quota-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-secondary);margin-bottom:4px}.quota-bar{height:6px;background:#e9edf3;border-radius:999px;overflow:hidden}.quota-bar-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .3s}.quota-sub{display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted);margin-top:4px}.conversation{display:flex;flex-direction:column;height:100%}.conversation-header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.conversation-title{font-size:15px;font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-list{flex:1;overflow-y:auto;padding:24px 20px}.message-row{display:flex;gap:10px;margin-bottom:16px}.message-user{flex-direction:row-reverse}.message-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;flex-shrink:0}.message-bubble{max-width:72%;padding:10px 14px;border-radius:12px}.message-user .message-bubble{background:var(--accent);color:#fff;border-top-right-radius:4px}.message-assistant .message-bubble{background:#f2f4f8;color:var(--text);border-top-left-radius:4px}.message-text{white-space:pre-wrap;word-break:break-word}.markdown{word-break:break-word}.markdown>*:first-child{margin-top:0}.markdown>*:last-child{margin-bottom:0}.markdown p{margin:0 0 8px}.markdown h1,.markdown h2,.markdown h3,.markdown h4,.markdown h5,.markdown h6{margin:12px 0 6px;line-height:1.3}.markdown h1{font-size:1.4em}.markdown h2{font-size:1.25em}.markdown h3{font-size:1.1em}.markdown ul,.markdown ol{margin:0 0 8px;padding-left:20px}.markdown li{margin:2px 0}.markdown code{background:#e8ecf3;border-radius:4px;padding:1px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}.markdown pre.code-block{background:#1f2430;color:#e6e9f0;padding:12px 14px;border-radius:8px;overflow-x:auto;margin:8px 0}.markdown pre.code-block code{background:transparent;color:inherit;padding:0}.markdown a{color:var(--accent);text-decoration:none}.markdown a:hover{text-decoration:underline}.markdown strong{font-weight:600}.cursor{display:inline-block;width:2px;height:1em;background:var(--accent);margin-left:2px;vertical-align:-2px;animation:blink 1s step-start infinite}@keyframes blink{50%{opacity:0}}.tool-block{margin:4px 0 16px}.tool-block-header{display:flex;align-items:center;gap:6px;background:#f2f4f8;border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:12px;color:var(--text-secondary);cursor:pointer}.tool-caret{font-size:10px}.tool-summary{margin:6px 0 0;padding:8px 10px;background:#f8f9fb;border:1px solid var(--border);border-radius:8px;font-size:12px;color:var(--text-secondary);white-space:pre-wrap;overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.error-bar{margin:8px 0;padding:10px 12px;border-radius:8px;background:#fdeaea;border:1px solid #f6caca;color:var(--danger);font-size:13px}.composer{display:flex;align-items:flex-end;gap:10px;padding:14px 20px;border-top:1px solid var(--border);background:var(--bg-panel)}.composer-input{flex:1;resize:none;border:1px solid var(--border);border-radius:10px;padding:10px 14px;font-size:14px;font-family:inherit;line-height:1.5;max-height:160px;background:#fff;color:var(--text)}.composer-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2f6bff1f}.composer-input:disabled{background:#f5f6f8}.empty-state{flex:1;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--text-secondary);padding:40px;text-align:center}.empty-logo{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,var(--accent),#7aa5ff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;margin-bottom:8px}.empty-state h2{margin:0;color:var(--text)}.empty-state p{margin:0 0 12px}.center-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-secondary);height:100%}.spinner{width:28px;height:28px;border:3px solid #e2e7ef;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:32px;text-align:center;max-width:420px;box-shadow:var(--shadow)}.error-card h2{margin:0 0 8px}.error-card p{margin:0 0 16px;color:var(--text-secondary)}.error-icon{font-size:32px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#f5f7fa,#eef2f8);padding:20px}.login-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--border);border-radius:16px;padding:40px 32px;box-shadow:var(--shadow);text-align:center}.login-brand{font-size:24px;font-weight:700;margin-bottom:4px}.login-sub{color:var(--text-secondary);margin-bottom:28px}.login-card .btn-lg+.btn-lg{margin-top:12px}.login-card .btn-lg:not(:last-of-type){margin-bottom:12px}.feishu-icon{flex-shrink:0}.login-error{margin-top:16px;padding:10px 12px;border-radius:8px;background:#fdeaea;color:var(--danger);font-size:13px}.login-privacy{margin-top:24px;font-size:12px;color:var(--text-muted);line-height:1.6}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#d3d9e3;border-radius:8px}::-webkit-scrollbar-thumb:hover{background:#b9c2cf}::-webkit-scrollbar-track{background:transparent}