:root{--color-background-primary:#fff;--color-background-secondary:#f7f7f5;--color-background-tertiary:#f0f0ed;--color-background-info:#e6f1fb;--color-background-success:#eaf3de;--color-background-danger:#fcebeb;--color-background-warning:#faeeda;--color-text-primary:#1a1a1a;--color-text-secondary:#666;--color-text-tertiary:#999;--color-text-info:#185fa5;--color-text-success:#3b6d11;--color-text-danger:#a32d2d;--color-text-warning:#854f0b;--color-border-tertiary:#00000014;--color-border-secondary:#00000026;--color-border-primary:#00000040;--color-accent:#00c29a;--color-accent-hover:#00a683;--color-accent-light:#e6faf5;--color-success:#639922;--color-danger:#e24b4a;--color-error:#e24b4a;--color-warning:#e67e22;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono:"IBM Plex Mono", "Cascadia Code", "Fira Code", "Consolas", monospace;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--sidebar-w:220px;--sidebar-collapsed-w:48px;--panel-w:300px;--panel-collapsed-w:28px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;font-family:var(--font-sans);color:var(--color-text-primary);background:var(--color-background-primary);-webkit-font-smoothing:antialiased;font-size:13px;overflow:hidden}.app-shell{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-w);background:var(--color-background-secondary);border-right:.5px solid var(--color-border-tertiary);-webkit-user-select:none;user-select:none;flex-direction:column;flex-shrink:0;font-size:13px;transition:width .18s;display:flex;position:relative;overflow:hidden}.sidebar.collapsed{width:var(--sidebar-collapsed-w)}.sidebar-logo{color:var(--color-text-primary);border-bottom:.5px solid var(--color-border-tertiary);flex-shrink:0;align-items:center;gap:8px;height:44px;padding:12px;font-size:14px;font-weight:500;display:flex}.sidebar.collapsed .sidebar-logo{justify-content:center;padding:12px 14px}.sidebar.collapsed .sidebar-logo span{display:none}.ql-icon{background:var(--color-accent);color:#fff;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:500;display:flex}.sidebar-toggle{border:.5px solid var(--color-border-tertiary);border-radius:var(--radius-md);background:var(--color-background-primary);cursor:pointer;width:22px;height:22px;color:var(--color-text-tertiary);z-index:2;justify-content:center;align-items:center;font-size:11px;transition:all .12s;display:flex;position:absolute;top:8px;right:8px}.sidebar-toggle:hover{border-color:var(--color-border-secondary);color:var(--color-text-secondary);background:var(--color-background-secondary)}.sidebar.collapsed .sidebar-toggle{left:50%;right:auto;transform:translate(-50%)}.sidebar-nav{flex:1;padding:4px 0;overflow:hidden auto}.nav-group-title{color:var(--color-text-tertiary);white-space:nowrap;padding:8px 12px 2px;font-size:10px;overflow:hidden}.sidebar.collapsed .nav-group-title{display:none}.nav-item{cursor:pointer;color:var(--color-text-secondary);white-space:nowrap;border-radius:6px;align-items:center;gap:8px;margin:1px 8px;padding:7px 12px;transition:background .12s;display:flex;position:relative}.sidebar.collapsed .nav-item{justify-content:center;margin:1px 6px;padding:7px 0}.nav-item:hover{background:var(--color-border-tertiary)}.nav-item.active{background:var(--color-accent);color:#fff}.nav-item.active:hover{background:var(--color-accent-hover)}.nav-icon{text-align:center;flex-shrink:0;width:20px;font-size:14px}.nav-label{flex:1;font-size:13px}.sidebar.collapsed 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.message-avatar{background:var(--color-background-tertiary);color:var(--color-text-secondary)}.message.user .message-avatar.user-avatar-sm{background:var(--color-accent);color:#fff;width:28px;height:28px}.message-body{flex-direction:column;flex:1;gap:8px;min-width:0;display:flex}.message-body.user-body{align-items:flex-end}.message-text.assistant-text{color:var(--color-text-primary);white-space:normal;word-break:break-word;letter-spacing:-.003em;background:0 0;border:none;padding:0;font-size:14px;line-height:22px}.message.user .message-text{background:var(--color-background-tertiary);color:var(--color-text-primary);white-space:pre-wrap;word-break:break-word;border-radius:16px 16px 0;max-height:310px;padding:8px 12px;font-size:13px;font-weight:400;line-height:19px;overflow-y:auto}.message.system{align-self:center}.message.system .message-text{background:var(--color-background-danger);color:var(--color-text-danger);border-radius:var(--radius-md);border:.5px solid #a22d2d26;padding:6px 12px;font-size:12px}.assistant-text.streaming-md{opacity:.7;transition:opacity .3s}.assistant-text:not(.streaming-md){opacity:1}.chat-input-area{background:var(--color-background-primary);border-top:.5px solid var(--color-border-tertiary);flex-direction:column;gap:6px;padding:8px 24px 12px;display:flex}.chat-input-row{align-items:flex-end;gap:8px;display:flex}.chat-input{border:.5px solid var(--color-border-tertiary);border-radius:var(--radius-lg);font-family:var(--font-sans);resize:none;background:var(--color-background-secondary);color:var(--color-text-primary);outline:none;flex:1;max-height:120px;padding:8px 12px;font-size:13px;font-weight:400;line-height:1.5}.chat-input:focus{border-color:var(--color-accent);background:var(--color-background-primary)}.chat-input::placeholder{color:var(--color-text-tertiary)}.send-btn{border:.5px solid 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var(--color-border-tertiary);max-height:160px;overflow-y:auto}.artifact-item{width:100%;color:var(--color-text-primary);cursor:pointer;font-size:11px;font-family:var(--font-sans);text-align:left;background:0 0;border:none;align-items:center;gap:8px;padding:6px 12px;display:flex}.artifact-item:hover{background:var(--color-background-tertiary)}.artifact-dot{border-radius:50%;flex-shrink:0;width:6px;height:6px}.artifact-type{color:var(--color-text-tertiary);flex-shrink:0;width:42px;font-size:10px}.artifact-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.artifact-time{color:var(--color-text-tertiary);flex-shrink:0;font-size:10px}.md-content{word-break:break-word;white-space:normal!important}.md-content .md-p{color:var(--color-text-primary);margin:0 0 8px;font-size:14px;line-height:22px}.md-content .md-p:last-child{margin-bottom:0}.md-content .md-h{color:var(--color-text-primary);letter-spacing:-.01em;margin:18px 0 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var(--color-border-tertiary);border-radius:var(--radius-md);background:var(--color-background-secondary);margin:10px 0;overflow:hidden}.md-code-header{background:var(--color-background-tertiary);border-bottom:.5px solid var(--color-border-tertiary);-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;padding:6px 12px;font-size:11px;display:flex}.md-code-lang{color:var(--color-text-tertiary);font-family:var(--font-mono);letter-spacing:.02em;text-transform:lowercase;font-size:10px;font-weight:500}.md-code-header .code-copy-btn{border:.5px solid var(--color-border-tertiary);background:var(--color-background-primary);width:24px;height:24px;color:var(--color-text-tertiary);cursor:pointer;opacity:0;border-radius:4px;justify-content:center;align-items:center;padding:0;transition:all .15s;display:inline-flex}.md-code-wrapper:hover .code-copy-btn,.md-code-header .code-copy-btn.copied{opacity:1}.md-code-header .code-copy-btn:hover{background:var(--color-background-secondary);color:var(--color-text-primary);border-color:var(--color-border-secondary)}.md-code-header .code-copy-btn.copied{color:var(--color-success);background:var(--color-background-success);border-color:#63992240}.md-content .md-code-block{background:var(--color-background-primary);color:var(--color-text-primary);font-family:var(--font-mono);white-space:pre;tab-size:2;margin:0;padding:14px 16px;font-size:12px;line-height:1.6;overflow-x:auto}.md-content .md-code-block code{font-family:inherit;font-size:inherit;color:inherit;background:0 0;padding:0}.md-content .md-blockquote{border-left:2.5px solid var(--color-accent);background:var(--color-accent-light);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--color-text-secondary);margin:8px 0;padding:8px 14px;font-size:13px;line-height:1.65}.md-content .md-blockquote .md-p{color:var(--color-text-secondary);margin-bottom:4px;font-size:13px}.md-content .md-blockquote 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