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.15s}.answer-tool-btn:hover{color:var(--text-primary);background:var(--bg-elevated);border-color:var(--bg-border)}.answer-tool-btn.is-active{color:var(--accent);border-color:var(--bg-border);background:var(--bg-elevated)}.answer-tool-btn.is-open{color:var(--text-primary);border-color:var(--bg-border);background:var(--bg-elevated)}.answer-tool-btn--icon{padding:3px 6px}.answer-src-count{font-size:10px;font-weight:600;line-height:1;padding:1px 5px;border-radius:9px;background:var(--accent-blue);color:#fff}.answer-menu{position:absolute;top:calc(100% + 4px);left:0;z-index:20;min-width:190px;padding:4px;background:var(--bg-elevated);border:1px solid var(--bg-border);border-radius:var(--radius-sm);box-shadow:0 6px 22px #00000047;display:flex;flex-direction:column;gap:1px}.answer-menu__label{font-size:10px;text-transform:none;letter-spacing:.06em;color:var(--text-muted);padding:4px 8px 2px}.answer-menu__item{display:block;width:100%;text-align:left;background:none;border:none;border-radius:4px;color:var(--text-secondary);font-size:var(--text-xs);font-family:var(--font-ui);padding:6px 8px;cursor:pointer}.answer-menu__item:hover{background:var(--bg-surface);color:var(--text-primary)}.error-card{display:flex;gap:var(--sp-3);align-items:flex-start;padding:var(--sp-3) var(--sp-4);background:#f871710f;border:1px solid rgba(248,113,113,.2);border-left:3px solid var(--color-error);border-radius:var(--radius-md);max-width:88%;animation:msg-in .18s 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var(--bg-border);color:var(--text-muted);cursor:pointer;font-size:12px;line-height:1;opacity:0;transition:opacity .15s,color .15s,border-color .15s}.app-panel:hover .panel-collapse{opacity:.85}.panel-collapse:hover{color:var(--text-primary);border-color:var(--accent-border);opacity:1}.panel-collapse--left{right:0;border-radius:var(--radius-sm) 0 0 var(--radius-sm);border-right:none}.panel-collapse--right{left:0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;border-left:none}.panel-expand{align-self:stretch;width:16px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--bg-surface);border:none;border-right:1px solid var(--bg-border);color:var(--text-muted);cursor:pointer;font-size:14px;transition:background .15s,color .15s}.panel-expand--right{border-right:none;border-left:1px solid var(--bg-border)}.panel-expand:hover{background:var(--bg-hover);color:var(--text-primary)}.thinking-disclosure{border:1px solid var(--bg-border);border-radius:var(--radius-md);overflow:hidden;font-family:var(--font-mono);font-size:var(--text-xs)}.thinking-disclosure__header{display:flex;align-items:center;gap:var(--sp-2);width:100%;padding:var(--sp-2) var(--sp-3);background:var(--bg-elevated);border:none;cursor:pointer;color:var(--text-secondary);text-align:left}.thinking-disclosure__header:hover{color:var(--text-primary)}.thinking-disclosure__chevron{flex-shrink:0;transition:transform .15s}.thinking-disclosure__chevron--open{transform:rotate(180deg)}.thinking-disclosure__label{font-family:var(--font-ui);font-size:var(--text-xs);letter-spacing:.02em;opacity:.7}.thinking-disclosure__body{margin:0;padding:var(--sp-3);background:var(--bg-base);color:var(--text-muted);font-size:var(--text-xs);line-height:1.6;white-space:pre-wrap;word-break:break-word;max-height:300px;overflow-y:auto}.thinking-row{display:flex;align-items:center;gap:var(--sp-2);padding:4px 0}@keyframes activity-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.3;transform:scale(.7)}}.activity-pulse-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent-blue);flex-shrink:0;animation:activity-pulse 1.1s ease-in-out infinite}@keyframes activity-live-blink{0%,to{opacity:1}50%{opacity:.2}}.activity-step-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--text-primary);flex-shrink:0}.activity-step-dot--error{background:var(--accent-red)}.activity-step-dot--live{background:var(--text-primary);animation:activity-live-blink 1.15s ease-in-out infinite}.chat-breadcrumb{display:flex;align-items:center;gap:var(--sp-2);flex-shrink:0;padding:var(--sp-4) var(--sp-5) var(--sp-3);min-width:0;overflow:hidden;font-family:var(--font-ui);font-size:var(--text-sm)}@media (max-width: 767px){.chat-breadcrumb{padding-left:52px;font-size:var(--text-xs)}.chat-breadcrumb-sep,.chat-breadcrumb-chat{display:none}}.chat-breadcrumb-project{background:none;border:none;padding:2px 4px;margin:-2px -4px;border-radius:var(--radius-sm);cursor:pointer;font:inherit;font-weight:600;color:var(--text-primary);white-space:nowrap;flex-shrink:1;min-width:0;overflow:hidden;transition:background var(--t-fast)}.chat-breadcrumb-project--overflow{-webkit-mask-image:linear-gradient(to right,black 70%,transparent 100%);mask-image:linear-gradient(to right,black 70%,transparent 100%)}.chat-breadcrumb-project:hover{background:color-mix(in srgb,var(--text-primary) 6%,transparent)}.chat-breadcrumb-input{background:color-mix(in srgb,var(--text-primary) 6%,transparent);border:1px solid var(--bg-border);border-radius:var(--radius-sm);padding:2px 6px;font:inherit;font-weight:600;color:var(--text-primary);outline:none;flex-shrink:0;max-width:50%}.chat-breadcrumb-sep{color:var(--text-muted);flex-shrink:0}.chat-breadcrumb-chat{background:none;border:none;padding:2px 4px;font-size:inherit;font-family:inherit;color:var(--text-muted);white-space:nowrap;min-width:0;overflow:hidden;text-overflow:ellipsis;flex-shrink:1;cursor:default;border-radius:var(--radius-sm)}.chat-breadcrumb-chat--editable{cursor:pointer}.chat-breadcrumb-chat--editable:hover{background:color-mix(in srgb,var(--text-primary) 6%,transparent)}.project-landing{flex:1;min-height:0;overflow-y:auto;padding:clamp(var(--sp-10),12vh,140px) var(--sp-6) var(--sp-6)}.project-landing-grid{width:100%;max-width:1120px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 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var(--t-fast)}.pl-session:first-child{border-top:none}.pl-session:hover{background:var(--bg-hover)}.pl-session__title{font-size:var(--text-sm);font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pl-session__meta{margin-top:2px;font-size:var(--text-2xs);color:var(--text-muted)}.pl-session__meta-time{font-family:var(--font-mono)}.project-landing-empty{font-size:var(--text-sm);color:var(--text-muted);padding:var(--sp-2) 0}.project-landing-aside{min-width:0;background:var(--bg-elevated);border:1px solid var(--bg-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.pl-sec{padding:var(--sp-4);border-top:1px solid 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var(--t-fast)}.pl-sec__empty:hover{color:var(--text-secondary)}.pl-sec__editor{width:100%;background:var(--bg-base);border:1px solid var(--bg-border);border-radius:var(--radius-md);outline:none;resize:vertical;font-family:inherit;font-size:var(--text-sm);line-height:1.55;color:var(--text-primary);padding:var(--sp-3);min-height:92px}.pl-sec__editor:focus{border-color:var(--accent-border)}.pl-sec__editor::placeholder{color:var(--text-muted)}.pl-files{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-2)}.pl-file{display:flex;flex-direction:column;gap:var(--sp-2);min-width:0;min-height:78px;text-align:left;background:var(--bg-surface);border:1px solid var(--bg-border);border-radius:var(--radius-md);padding:var(--sp-2) var(--sp-3);cursor:pointer;transition:border-color var(--t-fast),transform var(--t-fast)}.pl-file:hover{border-color:var(--accent);transform:translateY(-1px)}.pl-file:active{transform:translateY(0)}.pl-file__name{font-family:var(--font-mono);font-size:var(--text-2xs);line-height:1.35;color:var(--text-primary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;word-break:break-all}.pl-file__foot{margin-top:auto;display:flex;align-items:center}.pl-file__ext{font-family:var(--font-mono);font-size:var(--text-2xs);letter-spacing:.02em;padding:1px 6px;border-radius:var(--radius-xs);color:var(--ft-default);background:var(--ft-default-bg)}.pl-file__ext--indexing{color:var(--accent);background:var(--accent-subtle)}.pl-sec__more{margin-top:var(--sp-3);font-size:var(--text-2xs);color:var(--text-secondary);background:none;border:none;padding:0;cursor:pointer;transition:color var(--t-fast)}.pl-sec__more:hover{color:var(--text-primary)}.chat-top-fade{flex-shrink:0;height:28px;margin-bottom:-28px;background:linear-gradient(to bottom,var(--bg-base) 0%,transparent 100%);pointer-events:none;position:relative;z-index:5}.scroll-to-bottom-btn{position:sticky;bottom:16px;align-self:center;flex-shrink:0;display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-full);border:1px solid var(--bg-border);background:var(--bg-elevated);color:var(--text-secondary);cursor:pointer;box-shadow:var(--shadow-md);z-index:10;opacity:0;pointer-events:none;transition:opacity var(--t-fast),color var(--t-fast),background var(--t-base)}.scroll-to-bottom-btn--visible{opacity:1;pointer-events:auto}.scroll-to-bottom-btn:hover{color:var(--text-primary);background:var(--bg-hover)}.greeting-gap{height:6vh;flex-shrink:1}.composer-bottom-spacer{flex:1}@media (max-width: 767px){.greeting-gap{height:42vh}.composer-bottom-spacer{display:none}.welcome-greeting{font-size:30px!important;padding:0 6% 12px!important}}.composer-wrap{padding:0 10% 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svg{flex-shrink:0;opacity:.8}.bundle-picker{position:relative;flex-shrink:0}.bundle-trigger{display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 10px 0 8px;border-radius:var(--radius-full);border:1px solid var(--bg-border);background:var(--bg-elevated);color:var(--text-secondary);font-family:var(--font-ui);font-size:var(--text-2xs);font-weight:500;cursor:pointer;white-space:nowrap;transition:border-color var(--t-base),color var(--t-base),background var(--t-base)}.bundle-trigger:hover{border-color:var(--accent-border);color:var(--text-primary);background:var(--bg-hover)}.bundle-trigger__dot{width:6px;height:6px;border-radius:var(--radius-full);background:var(--accent);opacity:.75;flex-shrink:0}.bundle-trigger__label{letter-spacing:.01em}.bundle-trigger__chevron{color:var(--text-muted);transition:transform var(--t-base);flex-shrink:0}.bundle-trigger__chevron--open{transform:rotate(180deg)}.attach-menu{position:relative;display:inline-flex}.attach-menu-dropdown{position:absolute;bottom:calc(100% + 6px);left:0;min-width:168px;background:var(--bg-elevated);border:1px solid var(--bg-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;z-index:200;padding:var(--sp-1);display:flex;flex-direction:column;gap:2px}.attach-menu-item{display:flex;align-items:center;gap:var(--sp-2);width:100%;padding:7px var(--sp-2);border-radius:var(--radius-md);border:none;background:transparent;color:var(--text-secondary);cursor:pointer;text-align:left;font-family:var(--font-ui);font-size:var(--text-xs);transition:background var(--t-fast),color var(--t-fast)}.attach-menu-item:hover{background:var(--bg-hover);color:var(--text-primary)}.attach-menu-item svg{flex-shrink:0;color:var(--text-muted)}.bundle-dropdown{position:absolute;bottom:calc(100% + 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var(--t-fast);text-align:left;color:var(--text-secondary)}.sidebar-user-row:hover,.sidebar-user-row--open{background:var(--bg-hover);color:var(--text-primary)}.sidebar-user-avatar{width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden}.sidebar-user-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}.sidebar-user-name{font-size:var(--text-xs);font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-ui)}.sidebar-user-email{font-size:10px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-ui)}.sidebar-user-chevron{flex-shrink:0;color:var(--text-muted);transition:transform var(--t-fast)}.sidebar-user-row--open .sidebar-user-chevron{transform:rotate(180deg)}.sidebar-user-popup{position:absolute;bottom:calc(100% + 4px);left:0;right:0;background:var(--bg-elevated);border:1px solid var(--bg-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:var(--sp-2) 0;z-index:300}.sidebar-user-menu-item{display:flex;align-items:center;gap:8px;width:100%;padding:7px 14px;border:none;background:none;cursor:pointer;font-size:var(--text-xs);font-family:var(--font-ui);color:var(--text-secondary);transition:background var(--t-fast),color var(--t-fast);text-align:left}.sidebar-user-menu-item:hover{background:color-mix(in srgb,var(--text-primary) 6%,transparent);color:var(--text-primary)}.sidebar-user-menu-item--danger{color:var(--accent-red, #d64545)}.sidebar-user-menu-item--danger:hover{background:color-mix(in srgb,var(--text-primary) 6%,transparent);color:var(--accent-red, #d64545)}.sidebar-user-menu-divider{height:1px;background:var(--bg-border);margin:var(--sp-1) 0}.sidebar-user-menu-lang{padding:var(--sp-1) 14px;display:flex;flex-direction:column;gap:4px}.sidebar-user-menu-lang-label{font-size:10px;font-family:var(--font-ui);color:var(--text-muted);text-transform:none;letter-spacing:.06em;font-weight:600}.sidebar-user-menu-lang-btns{display:flex;gap:4px;flex-wrap:wrap}.sidebar-lang-btn{padding:3px 10px;border:1px solid var(--bg-border);border-radius:var(--radius-sm);background:var(--bg-surface);color:var(--text-secondary);font-family:var(--font-ui);font-size:11px;font-weight:500;cursor:pointer;transition:border-color var(--t-fast),background var(--t-fast),color var(--t-fast)}.sidebar-lang-btn:hover{border-color:var(--bg-border);background:color-mix(in srgb,var(--text-primary) 6%,transparent);color:var(--text-primary)}.sidebar-lang-btn--active{border-color:var(--bg-border);background:color-mix(in srgb,var(--text-primary) 12%,transparent);color:var(--text-primary);font-weight:600}.sidebar-user-signin{display:block;text-align:center;padding:7px;border-radius:var(--radius-md);background:var(--accent);color:#fff;text-decoration:none;font-size:var(--text-xs);font-weight:600;font-family:var(--font-ui);transition:opacity var(--t-fast)}.sidebar-header{display:flex;align-items:center;gap:var(--sp-2);padding-bottom:var(--sp-2);margin-bottom:var(--sp-2);flex-shrink:0}.sidebar-scroll{margin-right:calc(-1 * var(--sp-3));padding-right:var(--sp-3)}.sidebar-nav{display:flex;flex-direction:column;gap:var(--sp-1);margin-bottom:var(--sp-3);flex-shrink:0}.sidebar-nav-btn{display:flex;align-items:center;gap:var(--sp-2);width:100%;padding:7px var(--sp-2);border:none;border-radius:var(--radius-md);background:none;color:var(--text-secondary);font-size:var(--text-xs);font-weight:500;font-family:var(--font-ui);cursor:pointer;transition:background var(--t-fast),color var(--t-fast);text-align:left;white-space:nowrap}.sidebar-nav-btn:hover{background:color-mix(in srgb,var(--text-primary) 6%,transparent);color:var(--text-primary)}.sidebar-nav-btn--active{background:color-mix(in srgb,var(--text-primary) 10%,transparent);color:var(--text-primary)}.sidebar-nav-btn:disabled{opacity:.4;cursor:not-allowed}.sidebar-nav-btn--solid,.sidebar-nav-btn--solid:hover{background:var(--bg-elevated);border-color:var(--bg-elevated);color:var(--text-secondary)}.sidebar-section-heading{font-size:var(--text-2xs);text-transform:none;letter-spacing:.07em;color:var(--text-muted);padding:10px 8px 3px;-webkit-user-select:none;user-select:none}.sidebar-project-row{display:flex;align-items:center;gap:var(--sp-2);width:100%;padding:7px var(--sp-2);background:none;border:none;border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);font-size:var(--text-xs);font-family:var(--font-ui);text-align:left;transition:background var(--t-fast),color var(--t-fast)}.sidebar-project-row:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-project-row--active{color:var(--text-primary);font-weight:500}.sidebar-project-row-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar--collapsed{display:flex;flex-direction:column;align-items:center;gap:var(--sp-1);padding:var(--sp-2) 0;background:var(--bg-base);height:100%;overflow:hidden}.sidebar-strip-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:var(--radius-md);background:none;color:var(--text-muted);cursor:pointer;transition:background var(--t-fast),color var(--t-fast);flex-shrink:0}.sidebar-strip-icon:hover{background:color-mix(in srgb,var(--text-primary) 6%,transparent);color:var(--text-primary)}.sidebar-strip-icon--active{color:var(--text-primary);background:color-mix(in srgb,var(--text-primary) 10%,transparent)}.sidebar-strip-icon:disabled{opacity:.35;cursor:not-allowed}.sidebar-strip-icon--user{width:36px;height:36px}.sidebar-strip-divider{width:24px;height:1px;background:var(--bg-border);margin:var(--sp-1) 0;flex-shrink:0}.sidebar-strip-files{display:flex;flex-direction:column;align-items:center;gap:2px;overflow-y:auto;overflow-x:hidden;flex:1 1 auto;min-height:0;width:100%}.sidebar-user-popup--strip{left:calc(100% + 8px);right:auto;bottom:0;top:auto;min-width:200px}.sidebar-user-signin:hover{opacity:.88}