:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#172033;--bg:#f4f7fb;--surface:#fff;--surface-soft:#f8faff;--surface-hover:#eef4ff;--line:#dfe5ee;--line-soft:#e9edf3;--text:#172033;--muted:#68758a;--muted-2:#929dad;--blue:#4f8df7;--blue-strong:#2e75ee;--blue-soft:#edf4ff;--green:#24b878;--danger:#d94b5b;--radius:15px;background:#f4f7fb;font-family:Inter,Segoe UI,Microsoft YaHei,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0}html,body{overflow:hidden}body{background:radial-gradient(circle at 65% 0%, #fff 0, var(--bg) 42%)}button,textarea,input{font:inherit}button{color:inherit}svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}button:focus-visible,textarea:focus-visible,input:focus-visible,summary:focus-visible{outline-offset:2px;outline:3px solid #2e75ee38}.app-shell{grid-template-columns:258px minmax(0,1fr);width:100%;height:100dvh;min-height:0;display:grid;overflow:hidden}.sidebar{border-right:1px solid var(--line-soft);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:20;background:#fffffff0;flex-direction:column;min-width:0;padding:22px 14px 14px;display:flex;box-shadow:8px 0 26px #2e436108}.brand{align-items:center;gap:11px;padding:0 9px 24px;display:flex}.brand-mark,.welcome-logo{color:#fff;background:linear-gradient(145deg,#6ba7ff,#2e75ee);place-items:center;display:grid;box-shadow:0 10px 30px #3170e933}.brand-mark{border-radius:10px;width:34px;height:34px}.brand-mark svg,.welcome-logo svg{fill:currentColor;stroke:none;width:25px;height:25px}.brand-mark .spark,.welcome-logo .spark{fill:#dceaff}.brand strong,.brand span{display:block}.brand strong{color:var(--text);letter-spacing:.1px;font-size:17px}.brand span{color:var(--muted);margin-top:2px;font-size:12px}.new-chat{color:#245cae;cursor:pointer;background:linear-gradient(#f5f9ff,#edf4ff);border:1px solid #b8cff4;border-radius:11px;align-items:center;gap:9px;width:100%;height:44px;padding:0 12px;font-size:15px;transition:all .2s;display:flex}.new-chat:hover{background:var(--surface-hover);border-color:#78a6e9;transform:translateY(-1px)}.new-chat svg{width:17px}.new-chat kbd{color:var(--muted);background:var(--surface);border:1px solid #d8e0ed;border-radius:5px;margin-left:auto;padding:2px 5px;font-family:inherit;font-size:11px}.history-header{color:var(--muted-2);letter-spacing:.8px;text-transform:uppercase;justify-content:space-between;align-items:center;padding:25px 8px 9px;font-size:12px;display:flex}.history-header button,.top-actions button,.mobile-menu{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:7px;padding:5px}.history-header button:hover,.top-actions button:hover,.mobile-menu:hover{color:var(--text);background:var(--surface-hover)}.history-header svg{width:15px;height:15px}.history-list{flex:1;min-height:0;overflow:auto}.history-item{color:#596579;cursor:pointer;text-align:left;background:0 0;border:0;border-radius:9px;align-items:center;gap:9px;width:100%;padding:10px;font-size:14px;display:flex;position:relative}.history-item:hover,.history-item.active{color:var(--text);background:var(--surface-hover)}.history-item.active:before{content:"";background:var(--blue);border-radius:2px;width:2px;height:18px;position:absolute;left:0}.history-item svg{flex:none;width:15px;height:15px}.history-item span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.empty-history{color:var(--muted-2);text-align:center;padding:18px 5px;font-size:13px}.main-panel{grid-template-rows:66px minmax(0,1fr) min-content;min-width:0;height:100%;min-height:0;display:grid;overflow:hidden}.topbar{border-bottom:1px solid var(--line-soft);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:5;background:#ffffffdb;justify-content:space-between;align-items:center;padding:0 26px;display:flex}.model-info{align-items:center;gap:10px;display:flex}.model-icon{color:#367ce8;background:#f1f6ff;border:1px solid #d6e2f5;border-radius:9px;place-items:center;width:32px;height:32px;display:grid}.model-icon svg{width:17px}.model-info strong,.model-info span{display:block}.model-info strong{font-size:14px}.model-info div>span{color:var(--muted);margin-top:3px;font-size:11px}.model-info i{background:var(--green);border-radius:50%;width:5px;height:5px;margin-right:5px;display:inline-block;box-shadow:0 0 8px #24b87873}.top-actions{gap:5px;display:flex}.top-actions svg{width:17px;height:17px}.mobile-menu{display:none}.chat-scroll{overscroll-behavior:contain;scroll-behavior:smooth;scrollbar-gutter:auto;scrollbar-color:#aeb8c6 #eef1f5;width:100%;height:100%;min-height:0;overflow:hidden auto}.welcome{text-align:center;width:min(710px,100% - 40px);min-height:100%;margin:0 auto;padding:clamp(60px,11vh,112px) 0 45px}.welcome-logo{border-radius:17px;width:54px;height:54px;margin:0 auto 23px}.welcome-logo svg{width:38px;height:38px}.welcome h1{letter-spacing:-.8px;margin:0 0 10px;font-size:clamp(26px,3vw + 2px,34px)}.welcome>p{width:min(520px,100%);color:var(--muted);margin:0 auto;font-size:15px;line-height:1.8}.suggestions{grid-template-columns:repeat(3,1fr);gap:10px;margin-top:42px;display:grid}.suggestions button{border:1px solid var(--line);min-width:0;min-height:84px;color:var(--text);cursor:pointer;text-align:left;background:#ffffffe6;border-radius:13px;align-items:flex-start;gap:11px;padding:15px 13px;transition:all .2s;display:flex}.suggestions button:hover{background:#f8fbff;border-color:#adc6e9;transform:translateY(-2px);box-shadow:0 8px 24px #1f406914}.suggestion-icon{border-radius:8px;flex:none;place-items:center;width:29px;height:29px;display:grid}.suggestion-icon svg{width:15px}.suggestion-icon.blue{color:#357be4;background:#edf4ff}.suggestion-icon.purple{color:#8254d6;background:#f3edff}.suggestion-icon.green{color:#168b63;background:#eaf9f2}.suggestions strong,.suggestions small{display:block}.suggestions strong{white-space:nowrap;margin-top:1px;font-size:13px}.suggestions small{color:var(--muted);white-space:nowrap;margin-top:7px;font-size:11px}.messages{width:min(820px,100% - 44px);margin:0 auto;padding:32px 0 40px}.message{grid-template-columns:34px minmax(0,1fr);gap:13px;margin-bottom:27px;animation:.25s messageIn;display:grid}@keyframes messageIn{0%{opacity:0;transform:translateY(5px)}}.avatar{border-radius:9px;place-items:center;width:32px;height:32px;margin-top:1px;display:grid}.message.user .avatar{color:#4b5565;background:#e8edf4}.message.assistant .avatar{color:#fff;background:linear-gradient(145deg,#4d90ff,#2769df)}.avatar svg{width:17px;height:17px}.message-content{color:#252a33;min-width:0;font-size:15px;line-height:1.78}.message-meta{justify-content:space-between;align-items:center;height:24px;margin-bottom:5px;display:flex}.message-meta strong{color:var(--text);font-size:13px}.message-meta time{color:var(--muted-2);font-size:11px}.message-text{overflow-wrap:anywhere}.message-text p{margin:0 0 10px}.message-text p:last-child{margin-bottom:0}.message-text pre{color:#20242c;background:#f3f5f8;border:1px solid #d8dee8;border-radius:10px;margin:12px 0;padding:16px;line-height:1.55;position:relative;overflow:auto}.message-text code{font-family:Consolas,Cascadia Code,monospace;font-size:14px}.message-text :not(pre)>code{color:#1f64c5;background:#edf4ff;border-radius:4px;padding:2px 5px}.message-images{flex-wrap:wrap;gap:8px;margin-bottom:10px;display:flex}.message-images img{border:1px solid var(--line);object-fit:cover;border-radius:10px;max-width:260px;max-height:230px}.thinking{color:var(--muted);border-left:2px solid #bdc9d9;margin:3px 0 14px;padding:3px 0 3px 12px}.thinking summary{cursor:pointer;color:#64748b;-webkit-user-select:none;user-select:none;font-size:13px}.thinking div{color:var(--muted);white-space:pre-wrap;margin-top:8px;font-size:13px}.typing{gap:4px;padding:8px 0;display:inline-flex}.typing i{background:var(--muted);border-radius:50%;width:5px;height:5px;animation:1.2s infinite bounce}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-5px)}}.error-message{color:var(--danger);background:#fff3f4;border:1px solid #f0c2c8;border-radius:9px;padding:10px 12px}.composer-area{background:linear-gradient(180deg, #f4f7fb00, var(--bg) 20%);z-index:6;min-height:0;padding:12px max(22px,50% - 410px) 15px;position:relative}.composer{border-radius:var(--radius);background:#fffffffa;border:1px solid #d4dae4;transition:all .2s;box-shadow:0 12px 35px #1f2d401a}.composer:focus-within{border-color:#78a6e9;box-shadow:0 0 0 3px #3a68b214,0 12px 35px #1f2d401a}.composer textarea{resize:none;width:100%;max-height:170px;color:var(--text);background:0 0;border:0;outline:0;padding:15px 16px 8px;font-size:15px;line-height:1.55;display:block}.composer textarea::placeholder{color:#8995a7}.composer-bottom{justify-content:space-between;align-items:center;padding:4px 8px 8px 11px;display:flex}.composer-tools{align-items:center;gap:4px;display:flex}.composer-tools button{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:7px;align-items:center;gap:5px;padding:6px 7px;font-size:12px;display:flex}.composer-tools button:hover{color:var(--text);background:#eef2f7}.composer-tools button.active{color:#2e75ee;background:#edf4ff}.composer-tools svg{width:15px;height:15px}.divider{background:#d9dee6;width:1px;height:14px;margin:0 4px}.send-button{color:#fff;background:var(--blue-strong);cursor:pointer;border:0;border-radius:9px;place-items:center;width:31px;height:31px;transition:all .2s;display:grid;box-shadow:0 4px 14px #2e75ee40}.send-button:hover{background:#4789f4;transform:translateY(-1px)}.send-button:disabled{opacity:.45;cursor:not-allowed;transform:none}.send-button svg{fill:currentColor;stroke-width:1.5px;width:16px;height:16px}.disclaimer{color:#7e8999;text-align:center;margin:8px 0 0;font-size:10px}.image-preview-list{gap:8px;width:100%;display:flex;overflow-x:auto}.image-preview-list:not(:empty){padding:0 0 8px}.image-preview{flex:none;width:64px;height:64px;position:relative}.image-preview img{object-fit:cover;border:1px solid #cbd3df;border-radius:9px;width:100%;height:100%}.image-preview button{cursor:pointer;background:#fff;border:1px solid #cbd3df;border-radius:50%;place-items:center;width:19px;height:19px;padding:0;display:grid;position:absolute;top:-6px;right:-6px}.image-preview button svg{width:10px;height:10px}.overlay{z-index:30;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#1a263947;display:none;position:fixed;inset:0}.overlay.visible{display:block}.settings-modal{width:min(480px,100% - 28px);color:var(--text);background:#fff;border:1px solid #d8dee8;border-radius:16px;padding:0;box-shadow:0 30px 80px #19233238}.settings-modal::backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#1a263947}.settings-modal form{padding:22px}.modal-header{justify-content:space-between;margin-bottom:20px;display:flex}.modal-header h2{margin:0;font-size:20px}.modal-header p{color:var(--muted);margin:5px 0 0;font-size:13px}.modal-header button{color:var(--muted);cursor:pointer;background:0 0;border:0;align-self:start;padding:3px}.modal-header svg{width:18px}.settings-modal label{color:#526075;margin:14px 0 7px;font-size:13px;display:block}.settings-modal input,.settings-modal textarea{width:100%;color:var(--text);background:#f9fafb;border:1px solid #d7dde7;border-radius:9px;outline:none;padding:10px 11px;font-size:14px}.settings-modal input:focus,.settings-modal textarea:focus{border-color:#78a6e9}.settings-modal textarea{resize:vertical;line-height:1.5}.modal-actions{justify-content:flex-end;gap:8px;margin-top:22px;display:flex}.modal-actions button{cursor:pointer;border-radius:8px;padding:8px 15px;font-size:13px}.modal-actions .secondary{background:#fff;border:1px solid #d4dae4}.modal-actions .primary{border:1px solid var(--blue-strong);color:#fff;background:var(--blue-strong)}.toast{z-index:100;color:#252a33;opacity:0;pointer-events:none;background:#fff;border:1px solid #d2d9e4;border-radius:9px;max-width:min(440px,100% - 30px);padding:10px 15px;font-size:13px;transition:all .25s;position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);box-shadow:0 12px 35px #1f2d402e}.toast.visible{opacity:1;transform:translate(-50%)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:#eef1f5}::-webkit-scrollbar-thumb{background:#aeb8c6;border:2px solid #eef1f5;border-radius:10px;min-height:44px}::-webkit-scrollbar-thumb:hover{background:#8d99aa}@media (width<=760px){.app-shell{grid-template-columns:1fr}.sidebar{width:258px;transition:transform .25s;position:fixed;inset:0 auto 0 0;transform:translate(-102%);box-shadow:18px 0 45px #1f2d402e}.sidebar.open{transform:translate(0)}.mobile-menu{margin-right:8px;display:block}.topbar{justify-content:flex-start;padding:0 14px}.top-actions{margin-left:auto}.suggestions{grid-template-columns:1fr;margin-top:28px}.suggestions button{min-height:66px}.welcome{padding-top:45px}.messages{width:calc(100% - 28px)}.composer-area{padding-left:14px;padding-right:14px}.composer-tools button span{display:none}}