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var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}*{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;height:100dvh;font-size:14px;line-height:1.5;overflow:hidden}button,input,textarea,select{font:inherit}::selection{background:var(--color-accent);color:var(--color-on-accent)}::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--color-muted-2)}.app{flex-direction:column;height:100dvh;display:flex}.topbar{border-bottom:1px solid var(--color-border-subtle);background:var(--color-surface);z-index:50;flex-shrink:0;justify-content:space-between;align-items:center;height:52px;padding:0 20px;display:flex;position:relative}.topbar-session-title{display:none}.brand{font-family:var(--font-display);letter-spacing:0;color:var(--color-primary);align-items:center;gap:6px;font-size:1.05rem;font-weight:650;display:flex}.brand-logo{font-size:1.25rem;line-height:1}.layout{background:var(--color-surface);flex:1;display:flex;overflow:hidden}.sidebar{background:#eceee9;width:250px}@supports (color:color-mix(in lab,red,red)){.sidebar{background:color-mix(in srgb,var(--color-accent) 10%,var(--color-bg))}}.sidebar{border-right:1px solid #e0e3e4;flex-direction:column;flex-shrink:0;gap:4px;padding:10px 12px 12px;font-size:14px;line-height:1.35;display:flex;overflow-y:auto}.sidebar.sidebar-collapsed{align-items:center;width:44px;padding:10px 6px;overflow:hidden}.sidebar-header{align-items:center;gap:4px;margin-bottom:2px;display:flex}.sidebar-header .new-topic-btn{flex:1;min-width:0}.theme-dots{align-items:center;gap:8px;padding:10px 12px 6px;display:flex}.theme-dot{cursor:pointer;border:none;border-radius:50%;width:24px;height:24px;transition:transform .15s;box-shadow:inset 0 0 0 1px #1118271f}.theme-dot:hover{transform:scale(1.12)}.theme-dot.active{box-shadow:inset 0 0 0 2px var(--color-surface),0 0 0 2px var(--color-primary)}.locale-switch{gap:4px;margin-top:auto;padding-top:10px;display:flex}.locale-switch button{color:#5a6368;cursor:pointer;background:0 0;border:0;border-radius:8px;flex:1;min-width:0;padding:6px 8px;font-size:12px;line-height:1.2}.locale-switch button.active{color:#1f2c32;background:#fff;font-weight:550}.sidebar-expand-btn{color:#1f2c32;cursor:pointer;background:0 0;border:0;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;transition:color .15s,border-color .15s,background .15s;display:inline-flex}.sidebar-expand-btn:hover{background:var(--color-accent-muted);color:#1f2c32}.sidebar-expand-btn i{font-size:18px}.new-topic-btn{color:#1f2c32;cursor:pointer;background:0 0;border:0;border-radius:10px;justify-content:flex-start;align-items:center;gap:8px;width:100%;min-height:36px;padding:8px 10px;font-size:14px;font-weight:500;line-height:1.35;transition:background .15s;display:flex}.new-topic-btn:hover{background:var(--color-accent-muted)}.new-topic-btn i{color:#1f2c32;font-size:19px}.topic-search-wrap{min-height:44px;position:relative}.sidebar-top{justify-content:space-between;align-items:center;gap:8px;padding:12px 10px 8px;display:flex}.sidebar-top .topic-search-wrap{flex:1;margin:0;display:flex}.sidebar-brand-text{font-family:var(--font-display);letter-spacing:-.01em;color:var(--color-primary);white-space:nowrap;font-size:17px;font-weight:700}.sidebar-search-btn{color:#1f2c32;cursor:pointer;background:0 0;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:17px;transition:background .15s;display:inline-flex}.sidebar-search-btn:hover{background:var(--color-accent-muted)}.search-icon{color:#1f2c32;pointer-events:none;font-size:19px;position:absolute;top:50%;left:10px;transform:translateY(-50%)}.search-clear{color:var(--color-muted);cursor:pointer;background:0 0;border:0;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:16px;transition:color .15s,background 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i{display:none}.section-count{color:var(--color-muted-2);opacity:1;font-size:12px;font-weight:400}.topic-list{flex-direction:column;gap:2px;display:flex}.topic-item{cursor:pointer;color:#1f2c32;border-radius:10px;align-items:center;gap:6px;min-height:40px;padding:9px 10px;font-size:14px;font-weight:400;line-height:1.35;transition:all .15s;display:flex;position:relative}.topic-item:hover,.topic-item:focus-within{background:var(--color-accent-muted)}.topic-item.active{background:var(--color-accent-muted);box-shadow:none;font-weight:500}.topic-item.pinned{background:var(--color-accent-muted)}.topic-item.pinned:hover{background:rgba(var(--color-accent-rgb),.19)}.topic-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.topic-open{min-width:0;min-height:30px;color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;flex:1;align-items:center;padding:0;display:flex}.topic-more-wrap{flex-shrink:0;margin-left:auto;position:relative}.topic-more-btn{cursor:pointer;color:#5a6368;opacity:0;background:0 0;border:none;border-radius:7px;width:44px;height:44px;padding:0;font-size:18px;transition:all .15s}.topic-item:hover .topic-more-btn,.topic-item:focus-within .topic-more-btn{opacity:1}.topic-more-btn:hover{color:#1f2c32;background:#d5dadc}@media (pointer:coarse){.topic-more-btn{opacity:.6}}.topic-action-menu{z-index:100;background:var(--color-surface-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);min-width:120px;box-shadow:var(--shadow-lg);padding:4px;animation:.15s fadeIn;position:absolute;top:calc(100% + 4px);right:0}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.topic-action-item{text-align:left;width:100%;min-height:44px;font:inherit;cursor:pointer;color:var(--color-primary);background:0 0;border:0;border-radius:6px;align-items:center;gap:8px;padding:8px 10px;font-size:12px;transition:background .1s;display:flex}.topic-action-item:hover{background:var(--color-accent-muted);color:var(--color-accent)}.topic-action-item.danger{color:var(--color-danger)}.topic-action-item.danger:hover{background:#fee2e2}.topic-more{color:var(--color-muted-2);text-align:left;cursor:pointer;padding:8px 10px;font-size:13px;line-height:1.3;transition:color .15s}.topic-more:hover{color:#1f2c32}.topic-empty{color:var(--color-muted);text-align:center;padding:12px 4px;font-size:11px}.chat-area{background:var(--color-bg);flex-direction:column;flex:1;padding:20px;display:flex;position:relative;overflow:hidden}.workspace-toggle-btn{display:none}.steer-queue{flex-direction:column;gap:6px;margin-bottom:8px;display:flex}.steer-card{border:1px solid var(--color-border);background:var(--color-surface-elevated);box-shadow:var(--shadow-sm);border-radius:12px;align-items:center;gap:8px;padding:8px 10px;display:flex}.steer-card-index{text-align:center;width:16px;color:var(--color-muted-2);flex-shrink:0;font-size:11px;font-weight:600}.steer-card-text{min-width:0;color:var(--color-primary);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:13px;overflow:hidden}.steer-card-send{border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-bg);color:var(--color-primary);cursor:pointer;flex-shrink:0;align-items:center;gap:3px;padding:3px 9px;font-size:12px;display:inline-flex}.steer-card-send:hover{border-color:var(--color-accent);color:var(--color-accent)}.steer-card-btn{border-radius:var(--radius-sm);width:26px;height:26px;color:var(--color-muted);cursor:pointer;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;font-size:14px;display:inline-flex}.steer-card-btn:hover{color:var(--color-primary);background:var(--color-border-subtle)}.scroll-bottom-btn{z-index:40;border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-surface);width:36px;height:36px;color:var(--color-muted);cursor:pointer;box-shadow:var(--shadow-md);justify-content:center;align-items:center;font-size:17px;transition:all .15s;display:inline-flex;position:absolute;bottom:150px;right:16px}.scroll-bottom-btn:hover{color:var(--color-primary);border-color:var(--color-muted-2)}@media (min-width:769px){.workspace-toggle-btn{z-index:40;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);width:32px;height:32px;color:var(--color-muted);cursor:pointer;justify-content:center;align-items:center;font-size:16px;transition:all .15s;display:inline-flex;position:absolute;top:12px;right:16px}.workspace-toggle-btn:hover{color:var(--color-primary);border-color:var(--color-muted-2)}.preview-panel.preview-collapsed{display:none}}.chat-container{background:var(--color-surface-elevated);border:1px solid var(--color-border);border-radius:var(--radius-xl);height:100%;box-shadow:var(--shadow-md);flex-direction:column;display:flex;overflow:hidden}.chat-container.is-landing{box-shadow:none;background:0 0;border:none;justify-content:center}.chat-container.is-landing .messages{flex:none;padding-bottom:0;overflow:visible}.chat-container.is-landing .input-area{background:0 0;flex:none;padding-bottom:48px}.chat-header{border-bottom:1px solid var(--color-border-subtle);align-items:center;gap:10px;padding:14px 18px;display:flex}.chat-title{color:var(--color-primary);letter-spacing:0;font-size:14px;font-weight:600}.badge{background:var(--color-accent-muted);color:var(--color-accent);border-radius:var(--radius-full);letter-spacing:0;padding:3px 10px;font-size:11px;font-weight:600}.messages{flex-direction:column;flex:1;gap:16px;padding:24px 20px 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var(--color-border-subtle);color:var(--color-muted);white-space:pre-wrap;word-break:break-word;border-radius:10px;max-height:220px;margin:2px 8px 6px 27px;padding:8px 12px;font-size:12px;line-height:1.55;overflow-y:auto}.thought-row-detail.reasoning-tail{border-style:dashed}.spin{animation:1s linear infinite spin}.typing-indicator{align-items:center;gap:4px;padding:4px 0;display:flex}.typing-indicator span{background:var(--color-muted);border-radius:50%;width:6px;height:6px;animation:1.2s infinite typingBounce}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{opacity:.4;transform:translateY(0)}30%{opacity:1;transform:translateY(-6px)}}.input-area{padding:12px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom));background:var(--color-surface)}.input-area>*{width:100%;max-width:800px;margin-left:auto;margin-right:auto}.input-card{background:var(--color-surface);border:1px solid 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