:root{--bg-primary:#0a0a0a;--bg-panel:#141414;--bg-card:#1a1a1a;--bg-input:#0f0f0f;--bg-hover:#222;--bg-secondary:#1f1f1f;--bg-tertiary:#252525;--bg-main:var(--bg-input);--primary:#7c8aff;--primary-hover:#6b79ff;--accent:#2a2a2a;--accent-hover:#3a3a3a;--accent-light:#555;--text-primary:#e4e4e4;--text-secondary:#999;--text-muted:#666;--text:var(--text-primary);--success:#2ecc71;--warning:#f39c12;--error:#e74c3c;--info:#888;--border:#2a2a2a;--border-light:#333;--border-color:var(--border)}[data-theme=light]{--bg-primary:#e8e8e8;--bg-panel:#dedede;--bg-card:#fff;--bg-input:#e4e4e4;--bg-hover:#d6d6d6;--bg-secondary:#f0f0f0;--bg-tertiary:#e8e8e8;--bg-main:var(--bg-input);--primary:#6b79ff;--primary-hover:#5a67f0;--accent:#c8c8c8;--accent-hover:#b8b8b8;--accent-light:gray;--text-primary:#1a1a1a;--text-secondary:#666;--text-muted:#8a8a8a;--text:var(--text-primary);--info:#666;--border:#c8c8c8;--border-light:#dcdcdc;--border-color:var(--border)}:root{--radius:4px;--radius-sm:2px;--radius-md:6px;--radius-lg:8px;--radius-xl:12px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--font-mono:"Consolas", "SF Mono", "Cascadia Code", monospace;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;--nav-width:50%;--chat-width:50%;--topbar-height:48px;--statusbar-height:28px;--transition-fast:.15s ease;--transition-normal:.2s ease}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);font-size:14px;line-height:1.5}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}a{color:var(--text-secondary);text-decoration:none}a:hover{color:var(--text-primary)}input,textarea,select{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:14px;font-family:var(--font-sans);transition:border-color 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h4{color:var(--text-secondary);margin-bottom:8px;font-size:13px}.kb-search-item{border-bottom:1px solid var(--border);padding:8px 0;font-size:13px}.kb-search-item:last-child{border-bottom:none}.kb-search-item strong{color:var(--text-primary);margin:2px 0;display:block}.kb-search-item p{color:var(--text-muted);margin:2px 0 0;font-size:12px}.kb-layer-tag{border-radius:var(--radius-sm);padding:1px 6px;font-size:10px}.kb-layer-tag.company{color:var(--success);background:#2ecc7133}.kb-layer-tag.industry{color:var(--info);background:#3498db33}.kb-layer-tag.agent{color:var(--warning);background:#f39c1233}.kb-tabs{border-bottom:1px solid var(--border);gap:4px;margin-bottom:16px;padding-bottom:0;display:flex}.kb-tab{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;padding:8px 16px;font-size:13px;transition:all 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0;padding:2px 8px;font-size:18px;line-height:1;position:absolute;top:12px;right:12px}.login-brand{text-align:center;letter-spacing:2px;color:var(--accent-light);margin-bottom:4px;font-size:24px;font-weight:700}.login-logo{max-width:160px;height:auto;margin:0 auto 4px;display:block}.login-subtitle{text-align:center;color:var(--text-muted);margin-bottom:32px;font-size:13px}.login-form{flex-direction:column;gap:16px;display:flex}.form-group{flex-direction:column;gap:4px;display:flex}.form-group label{color:var(--text-secondary);font-size:13px}.login-error{border:1px solid var(--error);border-radius:var(--radius);color:var(--error);background:#e74c3c26;padding:8px 12px;font-size:13px}.login-btn{width:100%;margin-top:8px;padding:10px;font-size:15px}.login-btn:disabled{opacity:.6;cursor:not-allowed}.toast-container{z-index:9999;pointer-events:none;flex-direction:column;gap:6px;display:flex;position:fixed;top:56px;right:16px}.toast{color:#fff;cursor:pointer;pointer-events:auto;border-radius:6px;max-width:320px;padding:10px 16px;font-size:13px;animation:.2s ease-out toast-in;box-shadow:0 4px 16px #0000004d}.toast-info{background:var(--info)}.toast-success{background:var(--success)}.toast-warning{background:var(--warning);color:#1a1a2e}.toast-error{background:var(--error)}@keyframes toast-in{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:translate(0)}}.confirm-overlay{z-index:10000;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.confirm-box{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;min-width:320px;max-width:440px;padding:24px;box-shadow:0 8px 32px #0006}.confirm-message{color:var(--text-primary);margin:0 0 20px;font-size:14px;line-height:1.5}.confirm-buttons{justify-content:flex-end;gap:8px;display:flex}