:root{--sidebar-w: 240px;--header-h: 52px;--conv-max-w: 720px;--bg: #ffffff;--bg-sidebar: #f9f9f9;--border: #e5e5e5;--text: #0d0d0d;--text-muted: #8e8ea0;--user-bg: #f4f4f4;--accent: #10a37f;--accent-hover: #0d8c6d}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}.app-layout{display:flex;height:100%}.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:20}.main{margin-left:var(--sidebar-w);height:100%;display:flex;flex-direction:column;overflow:hidden;flex:1}.sidebar-header{height:var(--header-h);padding:0 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);flex-shrink:0}.sidebar-logo{width:28px;height:28px;background:var(--accent);border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:15px;color:#fff;flex-shrink:0}.sidebar-title{font-size:14px;font-weight:600}.sidebar-new-chat{margin:12px 12px 4px;padding:9px 14px;background:transparent;border:1px solid var(--border);border-radius:8px;font-size:13px;color:var(--text);cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .15s;text-align:left}.sidebar-new-chat:hover{background:#efefef}.sidebar-section-label{padding:16px 16px 6px;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);font-weight:600}.sidebar-sep{border:none;border-top:1px solid var(--border);margin:4px 12px}.sidebar-footer{margin-top:auto;padding:12px 16px;border-top:1px solid var(--border);font-size:11px;color:#bbb}.sidebar-footer a{color:#bbb;text-decoration:none;cursor:pointer}.sidebar-footer a:hover{color:#888}.intent-legend{padding:0 10px 4px}.intent-row-item{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:6px;font-size:12px;color:#555}.i-dot{width:9px;height:9px;border-radius:2px;flex-shrink:0}.d-product{background:#10a37f}.d-recommend{background:#2563eb}.d-rule{background:#d97706}.d-irrelevant{background:#ef4444}.intent-toggle-row{padding:4px 16px 8px;display:flex;align-items:center;gap:8px;font-size:12px;color:#666}.toggle-track{width:32px;height:17px;background:#ccc;border-radius:9px;position:relative;cursor:pointer;transition:background .2s;flex-shrink:0}.toggle-track.on{background:var(--accent)}.toggle-thumb{position:absolute;top:2px;left:2px;width:13px;height:13px;border-radius:50%;background:#fff;transition:left .2s;box-shadow:0 1px 3px #00000040}.toggle-track.on .toggle-thumb{left:17px}body.hide-intent .intent-meta{display:none!important}.sidebar-stats{padding:4px 16px 0;font-size:12px;color:#666;line-height:2}.sidebar-stats 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0}.profile-toggle-btn{display:flex;align-items:center;gap:6px;width:calc(100% - 32px);margin:6px 16px 0;padding:6px 8px;border-radius:6px;border:none;background:none;cursor:pointer;font-size:12px;color:#555;text-align:left}.profile-toggle-btn:hover{background:#efefef}.profile-panel{display:none;margin:4px 12px 8px;border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:12px;background:#fff}.profile-panel.open{display:block}.profile-field{margin-bottom:6px}.profile-field label{display:block;color:#888;margin-bottom:2px;font-size:11px}.profile-field input,.profile-field textarea,.profile-field select{width:100%;box-sizing:border-box;border:1px solid #e0e0e0;border-radius:4px;padding:3px 6px;font-size:12px;font-family:inherit;outline:none;resize:vertical}.profile-field input:focus,.profile-field textarea:focus{border-color:var(--accent)}.profile-save-btn{width:100%;padding:5px;border:none;border-radius:5px;background:var(--accent);color:#fff;font-size:12px;cursor:pointer;margin-top:4px}.profile-save-btn:hover{opacity:.88}.profile-uid{font-size:10px;color:#bbb;word-break:break-all;margin-top:6px;line-height:1.5}.profile-uid span{cursor:pointer;text-decoration:underline}.profile-uid span:hover{color:#888}.topbar{height:var(--header-h);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;flex-shrink:0;background:var(--bg)}.topbar-title{font-size:14px;font-weight:600;color:var(--text-muted)}.topbar-right{display:flex;align-items:center;gap:14px}.topbar-username{font-size:12px;color:var(--text-muted)}.topbar-logout-btn{font-size:12px;color:var(--text-muted);background:none;border:1px solid var(--border);border-radius:4px;padding:2px 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