:root{--sidebar-width:310px;--chat-width:828px;--brand-primary:#f9693a;--brand-primary-light:#ff8f5c;--brand-primary-dark:#d95e28;--brand-accent:#e8f1fa;--text-primary:#222;--text-secondary:#666;--text-placeholder:#999;--border-default:#e5e7eb;--border-hover:#f27c38;--bg-white:#fff;--bg-card:#fafafa;--bg-selected:#fff3eb;--bg-hover:#f9fafb;--radius-sm:6px;--radius-md:8px;--radius-lg:10px;--radius-xl:12px;--radius-full:28px;--paper:#fff;--paper-strong:#fff;--canvas:#fff;--ink:#2f2119;--muted:#76665b;--faint:#a49184;--line:#7953371f;--line-strong:#7953372e;--sun:#f59e0b;--sun-strong:#d97706;--coral:#ef6148;--coral-strong:#d84b36;--rose:#fff0e7;--honey:#ffe5a9;--success:#9a5a13;--danger:#b42318;--radius:10px;--shadow-soft:0 18px 44px #7953371a;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:Noto Sans 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#f27c3833;flex:none;place-items:center;width:42px;height:42px;font-family:Figtree,sans-serif;font-size:18px;font-weight:700;display:grid;box-shadow:0 8px 24px #f27c3838}.brand-title,.section-kicker,.connection-state,.conversation-title,.conversation-date,.empty-history,.history-label,.welcome-title,.welcome-copy{margin:0}.brand-title{letter-spacing:0;font-family:Noto Serif SC,Georgia,serif;font-size:23px;font-weight:700;line-height:1.12}.brand-text{gap:2px;display:flex}.brand-deep{background:linear-gradient(135deg,#2d2f38 0%,#1f2128 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-weight:700}.brand-evidence{color:var(--text-primary);font-weight:700}.brand-subtitle{color:var(--text-secondary);letter-spacing:.5px;margin:0;font-size:11px}.primary-button,.text-button,.send-button,.conversation-item{cursor:pointer;transition:background-color .16s,border-color .16s,box-shadow .16s,color .16s,transform .16s}.primary-button{border-radius:var(--radius-lg);background:var(--brand-primary);color:#fff;border:1px solid #f27c384d;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:10px 14px;font-size:14px;font-weight:700;transition:all .16s;display:inline-flex}.primary-button:hover{background:var(--bg-selected);color:var(--brand-primary);transform:translateY(-1px);box-shadow:0 4px 16px #f27c3826}.primary-button:active{transform:translateY(0)}.sidebar-new{width:100%}.sidebar-bottom .sidebar-new{display:none}.sidebar-new .btn-icon{flex-shrink:0;width:20px;height:20px}.button-icon{color:#fff;flex:none;width:18px;height:18px;position:relative}.plus-icon:before,.plus-icon:after{content:"";background:currentColor;border-radius:2px;position:absolute}.plus-icon:before{height:2px;top:8px;left:4px;right:4px}.plus-icon:after{width:2px;top:4px;bottom:4px;left:8px}.history-panel{flex-direction:column;flex:1;min-height:0;display:flex}.history-actions{justify-content:space-between;align-items:center;gap:12px;padding-bottom:8px;display:flex}.history-label{color:#000;font-size:16px;font-weight:700}.section-kicker{color:var(--coral-strong);text-transform:uppercase;font-family:Figtree,sans-serif;font-size:11px;font-weight:700;line-height:1.2}.text-button{color:var(--muted);background:0 0;border:0;padding:4px 0;font-size:13px}.text-button:hover{color:var(--danger)}.conversation-list{align-content:start;gap:12px;min-height:0;padding:0 4px 4px 0;display:grid;overflow:hidden auto}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#00000026;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#00000040}.conversation-item{border-radius:var(--radius);text-align:left;background:#e4e7eb;border:1px solid #0000;width:100%;min-width:0;min-height:58px;padding:10px 11px}.conversation-item:hover{background:#d8dbe3}.conversation-item.active{background:#fbe8e0;border:2px solid #ed6033;box-shadow:0 9px 22px #79533714}.conversation-title{color:#000;text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:14px;font-weight:700;line-height:1.35;display:block;overflow:hidden}.conversation-date{color:var(--faint);margin-top:6px;font-family:Figtree,sans-serif;font-size:12px;display:block}.empty-history{color:var(--muted);padding:14px 8px;font-size:14px;line-height:1.55}.sidebar-bottom{flex-direction:column;align-items:center;gap:18px;display:flex}.clear-button{border-radius:var(--radius);color:#991412;background:#f6f6f8;border:1px solid #0000001a;justify-content:center;align-items:center;gap:7px;width:100%;padding:10px;font-size:14px;font-weight:700;display:flex;box-shadow:0 1px 4px #0000000d}.clear-button:hover{box-shadow:0 2px 6px #00000014}.status-dot{background:var(--faint);border-radius:50%;width:9px;height:9px;box-shadow:0 0 0 4px #a4918426}.status-dot.online{background:var(--sun);box-shadow:0 0 0 4px #f59e0b2e}.status-dot.offline{background:var(--danger);box-shadow:0 0 0 4px 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