:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--surface:#f5f4ee;--surface-raised:#fffefb;--surface-raised-rgb:255, 254, 251;--surface-sunken:#eeece3;--surface-overlay:#26242052;--border:#e3e0d6;--border-strong:#d3cfc2;--text:#24221d;--text-muted:#6b675d;--text-faint:#97928a;--text-on-accent:#fffefb;--accent:#cc785c;--accent-hover:#b8664c;--accent-soft:#f4e4db;--accent-ring:#cc785c66;--bubble-user:#e9e6dc;--bubble-user-text:#24221d;--bubble-assistant:transparent;--danger:#bc4b3c;--danger-soft:#f6e0dc;--success:#5c7a4a;--warning:#b7791f;--ai-blue:#2563eb;--radius-card:12px;--radius-bubble:20px;--radius-pill:999px;--radius-input:14px;--shadow-sm:0 1px 2px #2624200f;--shadow-md:0 6px 20px #2624201a;--shadow-lg:0 16px 48px #26242038;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--tap:44px;--header-h:56px;--font:-apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, 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var(--space-3);color:var(--warning);flex-shrink:0;font-size:12px}.sidebar-pane-host{flex:1;min-height:0;position:relative;overflow:hidden}.sidebar-pane{flex-direction:column;display:flex;position:absolute;inset:0}.sidebar-pane-menu.is-enter{opacity:1;transform:none}.sidebar-pane-menu.is-exit{opacity:0;pointer-events:none;transition:transform var(--dur) var(--ease-spring), opacity var(--dur) var(--ease-spring);transform:translate(-25%)}.sidebar-pane-sub{animation:sidebar-slide-in var(--dur) var(--ease-spring) both}@keyframes sidebar-slide-in{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){.sidebar-pane-menu.is-exit{transition:none}.sidebar-pane-sub{animation:none}}.sidebar-nav{scrollbar-width:none;-ms-overflow-style:none;padding:var(--space-2) 0;flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.sidebar-nav::-webkit-scrollbar{display:none}.sidebar-nav-item{align-items:center;gap:var(--space-3);width:100%;padding:var(--space-3) var(--space-4);color:var(--text);text-align:left;min-height:var(--tap);cursor:pointer;background:0 0;border:none;transition:background .12s;display:flex}.sidebar-nav-item:focus-visible{background:var(--surface-sunken);outline:none}.sidebar-nav-icon{border-radius:var(--radius-card);background:var(--surface-sunken);width:32px;height:32px;color:var(--accent);flex-shrink:0;justify-content:center;align-items:center;display:flex}.sidebar-nav-label{flex:1;font-size:15px;font-weight:500}.sidebar-nav-count{color:var(--text-muted);text-align:right;min-width:20px;font-size:12px;font-weight:600}.sidebar-nav-arrow{color:var(--text-faint);flex-shrink:0}.sidebar-all-chats-btn{align-items:center;gap:var(--space-3);width:100%;padding:var(--space-3) var(--space-4);color:var(--text-muted);text-align:left;min-height:var(--tap);cursor:pointer;background:0 0;border:none;flex-shrink:0;margin-top:auto;transition:background .12s;display:flex}.sidebar-all-chats-btn:focus-visible{background:var(--surface-sunken);outline:2px solid var(--accent);outline-offset:-2px}.sidebar-menu-recent{touch-action:pan-y;overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden auto}.sidebar-section-label{letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);-webkit-user-select:none;user-select:none;padding:6px 16px 2px;font-size:.7rem;font-weight:600}.sidebar-body{touch-action:pan-y;overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden auto}.sidebar-body::-webkit-scrollbar{display:none}.sidebar-search-top{padding:var(--space-2) var(--space-3);background:var(--surface-raised);border-bottom:1px solid var(--border);z-index:1;flex-shrink:0;position:sticky;top:0}.sidebar-search-foot{padding:var(--space-2) var(--space-3) var(--space-3);background:var(--surface-raised);border-top:1px solid var(--border);flex-shrink:0;position:sticky;bottom:0}.sidebar-search{align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--surface-sunken);display:flex}.sidebar-search-icon{color:var(--text-faint);flex-shrink:0}.sidebar-search-input{background:0 0;border:none;outline:none;flex:1;font-size:14px}.sidebar-search-clear{flex-shrink:0;width:28px;min-width:28px;height:28px;min-height:28px}.sidebar-foot{border-top:1px solid var(--border);padding:var(--space-3) var(--space-4);padding-bottom:max(var(--space-3), 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.conv-rename{pointer-events:none;-webkit-user-select:none;user-select:none}.auth-screen{padding:var(--space-5);text-align:center;flex:1;justify-content:center;align-items:center;display:flex}.auth-inner{align-items:center;gap:var(--space-4);flex-direction:column;max-width:320px;display:flex}.auth-title{margin:0;font-size:20px;font-weight:700}.auth-hint{color:var(--text-muted);margin:0}.auth-dev{color:var(--warning);margin:0;font-size:12px}.chat-screen{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.chat-screen-menu-btn{flex-shrink:0}.message-list{overscroll-behavior:contain;padding:var(--space-4);gap:var(--space-3);scrollbar-width:none;-ms-overflow-style:none;flex-direction:column;flex:1;display:flex;overflow-y:auto}.message-list::-webkit-scrollbar{display:none}.message-list-loading,.message-list-empty{flex:1;justify-content:center;align-items:center;display:flex}.empty-hint{color:var(--text-faint);font-size:14px}.message{gap:var(--space-1);animation:fade-in .2s var(--ease-spring);flex-direction:column;display:flex}.message-user{align-items:flex-end}.message-assistant{align-items:flex-start}.bubble{max-width:80%;padding:var(--space-3) var(--space-4);border-radius:var(--radius-bubble);white-space:pre-wrap;word-break:break-word;font-size:15px;line-height:1.55}.bubble-user{background:var(--bubble-user);color:var(--bubble-user-text);border-bottom-right-radius:6px}.bubble-assistant{background:var(--bubble-assistant);color:var(--text);border-bottom-left-radius:6px}.bubble-error{align-items:center;gap:var(--space-1);color:var(--danger);margin:var(--space-1) 0 0;font-size:13px;display:flex}.message-actions{opacity:0;transition:opacity var(--dur);flex-wrap:wrap;align-items:center;gap:2px;display:flex}.message:hover .message-actions,.message:focus-within .message-actions{opacity:1}.message-actions-user{flex-direction:row-reverse}.message-usage{color:var(--text-faint);padding:0 var(--space-1);font-size:11px}.thinking-indicator{color:var(--text-muted);min-height:1.55em;font-size:15px;display:inline-block}@keyframes thinking-shimmer{0%{opacity:.4}50%{opacity:1}to{opacity:.4}}.thinking-shimmer{color:var(--text-muted);font-size:15px;animation:1.6s ease-in-out infinite thinking-shimmer;display:inline-block}@media (prefers-reduced-motion:reduce){.thinking-shimmer{animation:none}}.reasoning-panel{margin-bottom:var(--space-2);border-inline-start:2px solid var(--border);padding-inline-start:var(--space-2)}.reasoning-summary{cursor:pointer;color:var(--text-muted);font-size:12px;list-style:none}.reasoning-summary::-webkit-details-marker{display:none}.reasoning-summary:after{content:" ▾"}.reasoning-panel:not([open]) .reasoning-summary:after{content:" 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