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input{min-width:0;width:100%;border:0;outline:none;background:none;color:var(--chat-text)}.chat-main{display:flex;flex-direction:column;flex:1;min-width:0;position:relative}.chat-topbar{height:65px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;flex-shrink:0}.chat-top-start{display:flex;align-items:center;gap:7px;min-width:0}.chat-top-start>.chat-icon:first-child{display:none}.chat-top-start select{border:0;color:var(--chat-muted);max-width:320px;background:transparent;padding:7px 4px;cursor:pointer;outline:none}.chat-top-start select option{color:var(--chat-text);background:var(--chat-bg)}.chat-top-start>.chat-icon:last-child{color:var(--chat-muted)}.chat-top-actions{display:flex;align-items:center;gap:8px;color:var(--chat-muted)}.chat-share-button{display:flex;align-items:center;gap:6px;background:transparent;border:1px solid var(--chat-border);border-radius:9px;padding:5px 10px}.chat-share-button:hover{background:var(--chat-hover)}.chat-small-login{background:var(--chat-blue);color:#fff!important;padding:5px 17px;border-radius:8px}.chat-scroll{flex:1;overflow-y:auto;scrollbar-width:thin;min-height:0}.chat-body{max-width:808px;margin:0 auto;padding:0 16px 30px}.chat-scroll.empty{display:flex;flex-direction:column;justify-content:center;padding-bottom:8vh}.chat-scroll.empty .chat-body{width:100%;padding-bottom:0}.chat-greeting{display:flex;align-items:center;justify-content:center;gap:13px;margin:0 0 28px}.chat-greeting-logo{font-weight:800;font-size:31px;letter-spacing:-2px;color:var(--chat-blue);line-height:1}.chat-greeting h1{font-size:24px;font-weight:650;margin:0;letter-spacing:0;line-height:1.4;color:var(--chat-text)}.chat-composer-area{width:100%;max-width:808px;margin:0 auto}.chat-composer-area.docked{padding:14px 16px 4px}.chat-composer{padding:14px 12px 11px;background:var(--chat-input);border:1px solid var(--chat-border);border-radius:24px;box-shadow:0 12px 35px #73839b0b;position:relative}.chat-composer:focus-within{border-color:#c6cdf0}.chat-composer textarea{display:block;border:0;resize:none;outline:none!important;width:100%;min-height:57px;max-height:220px;padding:0 2px;color:var(--chat-text);background:transparent;font-size:16px;line-height:1.55}.chat-composer textarea::placeholder{color:#a4abb9}.chat-composer-controls{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:7px}.chat-composer-modes{display:flex;gap:8px}.chat-composer-modes button{font-size:12px;line-height:1.4;border-radius:18px;border:1px solid var(--chat-border);background:transparent;padding:7px 9px;display:flex;align-items:center;gap:4px;white-space:nowrap}.chat-composer-modes button:hover{background:var(--chat-hover)}.chat-composer-modes button.active{border-color:#c6d0ff;color:var(--chat-blue);background:var(--chat-blue-bg)}.chat-composer-tools{display:flex;align-items:center;gap:8px}.chat-send{width:35px;height:35px;border:0;background:#4d6bfe;color:#fff!important;display:flex;align-items:center;justify-content:center;border-radius:50%}.chat-send:disabled{opacity:.43}.chat-send.stop{background:var(--chat-text);color:var(--chat-bg)!important}.chat-file-input{display:none}.chat-model-hint{background:transparent;border:0;color:var(--chat-muted)!important;font-size:12px!important;display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:13px 0 0}.chat-model-hint span{color:var(--chat-blue)}.chat-model-hint:hover{color:var(--chat-blue)!important}.chat-disclaimer{font-size:11px;color:var(--chat-muted);text-align:center;padding:7px 12px 10px;flex-shrink:0}.chat-disclaimer a{margin-left:7px;text-decoration:underline}.chat-loading{display:flex;align-items:center;justify-content:center;gap:10px;height:100dvh;color:#8b8f98}.spinning{animation:chat-spin 1s linear infinite}@keyframes chat-spin{to{transform:rotate(360deg)}}.sidebar-collapsed .chat-sidebar{margin-left:-260px}.sidebar-collapsed .chat-top-start>.chat-icon:first-child{display:inline-flex}.chat-messages{padding-top:12px}.chat-message{margin:18px 0 38px;display:flex;flex-direction:column;gap:11px}.chat-message-identity{display:flex;align-items:center;gap:9px;font-size:15px}.chat-answer-logo{width:28px;height:28px;border-radius:8px;background:var(--chat-blue-bg);color:var(--chat-blue);font-size:23px;font-weight:800;text-align:center;line-height:29px}.chat-message.user .chat-message-identity{display:none}.chat-message.user .chat-message-content{align-self:flex-end;max-width:90%;padding:11px 17px;border-radius:18px;background:var(--chat-panel);min-width:80px}.chat-message.assistant .chat-message-content{padding-left:37px}.chat-user-text{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;font-size:15px;line-height:1.8}.chat-prose{font-size:15px;line-height:1.85;overflow-wrap:anywhere}.chat-prose>:first-child{margin-top:0}.chat-prose>:last-child{margin-bottom:0}.chat-prose h1{font-size:25px}.chat-prose h2{font-size:22px}.chat-prose h3{font-size:18px}.chat-prose p{margin:12px 0}.chat-prose li{margin:5px 0}.chat-prose a{color:var(--chat-blue);text-decoration:underline}.chat-prose img{max-width:100%;border-radius:10px}.chat-prose blockquote{border-left:3px solid var(--chat-border);margin-left:0;padding-left:16px;color:var(--chat-muted)}.chat-prose code{font-family:Consolas,SFMono-Regular,monospace;background:var(--chat-panel);border:1px solid var(--chat-border);padding:1px 5px;border-radius:4px;font-size:.9em}.chat-code{position:relative;background:var(--chat-panel);border:1px solid var(--chat-border);border-radius:12px;margin:18px 0;overflow:hidden}.chat-code>button{position:absolute;right:10px;top:7px;border:0;display:flex;align-items:center;gap:5px;background:var(--chat-panel);color:var(--chat-muted);font-size:12px;padding:3px 6px;border-radius:5px}.chat-code pre{overflow:auto;margin:0;padding:38px 18px 18px;line-height:1.65}.chat-code pre code{border:0;padding:0;background:none}.chat-table{overflow:auto}.chat-table table{width:100%;border-collapse:collapse;font-size:14px}.chat-table th,.chat-table td{border:1px solid var(--chat-border);padding:8px 13px;text-align:left}.chat-table th{background:var(--chat-panel)}.chat-reasoning{color:var(--chat-muted);font-size:13px;margin:0 0 16px;border-left:2px solid var(--chat-border);padding-left:13px}.chat-reasoning summary{cursor:pointer;display:flex;align-items:center;gap:7px;font-size:13px}.chat-reasoning summary:after{content:"⌄";margin-left:4px}.chat-reasoning[open] summary{margin-bottom:10px}.chat-reasoning p{margin:8px 0}.chat-message-actions{display:flex;align-items:center;gap:2px;margin-top:10px;color:var(--chat-muted)}.chat-message.user .chat-message-actions{justify-content:flex-end;margin-top:5px;opacity:0}.chat-message.user:hover .chat-message-actions,.chat-message.user:focus-within .chat-message-actions{opacity:1}.chat-message-actions .chat-icon{height:26px;width:28px}.chat-generating{display:flex;gap:5px;padding:14px 0}.chat-generating span{width:6px;height:6px;border-radius:50%;background:var(--chat-muted);animation:chat-pulse 1s infinite}.chat-generating span:nth-child(2){animation-delay:.2s}.chat-generating span:nth-child(3){animation-delay:.4s}@keyframes chat-pulse{50%{opacity:.25;transform:translateY(-2px)}}.chat-attachments{display:flex;gap:8px;flex-wrap:wrap;padding-bottom:10px}.chat-attachment{display:flex;align-items:center;gap:9px;max-width:240px;background:var(--chat-panel);border:1px solid var(--chat-border);border-radius:10px;padding:8px;color:var(--chat-muted)}.chat-attachment>img{width:36px;height:36px;object-fit:cover;border-radius:5px}.chat-attachment>span{font-size:12px;line-height:1.4;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--chat-text)}.chat-attachment small{display:block;color:var(--chat-muted);font-size:10px;margin-top:2px}.chat-attachment>a{padding:4px}.chat-error{color:#d14c49!important;font-size:13px;background:#fff2f1;border:1px solid #f5d3d0;padding:10px 12px;border-radius:9px}.chat-composer-error{display:flex;align-items:flex-start;gap:10px;margin-top:12px}.chat-composer-error>span{flex:1}.chat-modal-backdrop{position:fixed;inset:0;background:#0d152e66;display:flex;align-items:center;justify-content:center;padding:24px;z-index:90;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.chat-modal{background:var(--chat-bg, #fff);color:var(--chat-text, #202124);border:1px solid var(--chat-border, #e6e8ed);border-radius:18px;width:480px;max-width:100%;max-height:88dvh;overflow:auto;box-shadow:0 20px 80px #0002}.chat-modal.wide{width:900px}.chat-modal>header{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;padding:18px 24px;background:var(--chat-bg, #fff);border-bottom:1px solid var(--chat-border, #e6e8ed);z-index:2}.chat-modal h2{font-size:18px;margin:0}.chat-settings{padding:20px 24px}.chat-settings p{font-size:13px;line-height:1.8}.chat-settings label{display:flex;flex-direction:column;gap:7px;font-size:13px;margin-bottom:16px}.chat-settings input:not([type=range]),.chat-settings textarea{border:1px solid var(--chat-border);border-radius:8px;padding:9px 11px;background:var(--chat-input);color:var(--chat-text);width:100%}.chat-settings textarea{resize:vertical}.settings-section{border-bottom:1px solid var(--chat-border);padding-bottom:22px;margin-bottom:22px}.settings-section h3{font-size:14px;margin:0 0 12px}.settings-section .chat-muted{margin-top:-5px}.chat-muted{color:var(--chat-muted, #8b8f98);font-size:13px}.chat-theme-options{display:flex;gap:7px}.chat-theme-options button{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;background:transparent;border:1px solid var(--chat-border);border-radius:9px;padding:12px 7px;font-size:12px}.chat-theme-options button.selected{color:var(--chat-blue);border-color:var(--chat-blue);background:var(--chat-blue-bg)}.chat-primary{background:#4d6bfe!important;color:#fff!important;border:0;border-radius:8px;padding:9px 16px;display:inline-flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;font-size:13px}.chat-primary:hover{background:#405ce6!important}.settings-row{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;text-align:left;padding:10px 0;font-size:13px}.settings-row:hover{color:var(--chat-blue)}.settings-row>svg:last-child:not(:first-child){margin-left:auto}.chat-modal-actions{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-top:20px}.chat-modal-actions>button:not(.chat-primary):not(.chat-danger-button){background:transparent;border:1px solid var(--chat-border);border-radius:8px;padding:8px 15px}.chat-danger-button{background:#d44848;color:#fff!important;border:0;border-radius:8px;padding:8px 15px}.chat-provider-modal{padding:20px}.chat-provider-modal .provider-intro{margin-bottom:15px}.chat-toast{position:fixed;bottom:35px;left:50%;transform:translate(-50%);background:#202531;color:#fff;display:flex;align-items:center;gap:8px;font-size:13px;padding:10px 17px;border-radius:10px;z-index:120;box-shadow:0 5px 25px #0002}.chat-edit textarea{width:100%;min-height:100px;resize:vertical;border:1px solid var(--chat-border);border-radius:8px;padding:10px;color:var(--chat-text);background:var(--chat-input)}.chat-edit>div{display:flex;justify-content:flex-end;gap:8px;margin-top:8px}.chat-edit>div>button:first-child{border:1px solid var(--chat-border);background:none;border-radius:8px;padding:7px 15px}.chat-mobile-shade{display:none}.chat-shared{display:block;overflow:auto;height:auto;min-height:100dvh}.chat-shared>header{display:flex;align-items:center;justify-content:space-between;max-width:1120px;margin:auto;padding:24px}.chat-shared>main{max-width:820px;margin:25px auto;padding:0 24px}.chat-shared-heading{padding:0 0 24px;border-bottom:1px solid var(--chat-border);margin-bottom:40px}.chat-shared-heading p,.chat-shared-heading time{color:var(--chat-muted);font-size:12px}.chat-shared-heading h1{font-size:26px;margin:10px 0}.chat-shared .chat-message.assistant .chat-message-content{padding-left:0}@media(min-width:1600px){.chat-scroll.empty{padding-bottom:calc(13vh + 25px)}}@media(max-width:760px){.chat-sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;transform:translate(-100%);margin-left:0!important;transition:transform .2s}.mobile-open .chat-sidebar{transform:translate(0)}.chat-mobile-shade{display:block;position:fixed;inset:0 0 0 260px;border:0;background:#0005;z-index:11}.chat-top-start>.chat-icon:first-child{display:inline-flex}.chat-topbar{height:58px;padding:0 12px}.chat-top-start select{font-size:12px;max-width:180px;width:auto}.chat-top-start>.chat-icon:last-child{width:24px}.chat-top-actions{gap:3px}.chat-top-actions>.chat-icon{display:none}.chat-share-button{font-size:12px;padding:5px 8px}.chat-scroll.empty{padding-bottom:calc(15vh + 10px)}.chat-body{padding:0 16px 20px}.chat-greeting{gap:8px;margin-bottom:24px;flex-direction:column}.chat-greeting-logo{font-size:35px;margin-bottom:4px}.chat-greeting h1{font-size:21px}.chat-composer{padding:13px 11px 10px;border-radius:20px}.chat-composer textarea{font-size:15px;min-height:70px}.chat-composer-tools{gap:3px}.chat-composer-tools>.chat-icon:first-child{display:none}.chat-composer-modes{gap:5px}.chat-composer-modes button{font-size:11px;padding:7px}.chat-composer-area.docked{padding:8px 12px 0}.chat-composer-controls{gap:4px}.chat-message.assistant .chat-message-content{padding-left:0}.chat-message{margin-bottom:28px}.chat-prose,.chat-user-text{font-size:14px}.chat-message.user .chat-message-actions{opacity:1}.chat-modal-backdrop{padding:14px}.chat-modal{max-height:90dvh;border-radius:14px}.chat-modal>header{padding:15px 18px}.chat-settings{padding:18px}.chat-provider-modal{padding:14px}.chat-disclaimer{font-size:10px}.chat-toast{max-width:90vw;white-space:nowrap}.chat-shared>main{padding:0 18px}.chat-histories .history-more{opacity:1}.chat-modal .provider-form-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.chat-app *{animation:none!important;transition:none!important}}.chat-retry-error{background:transparent;border:0;color:#bc4545;font-size:12px;text-decoration:underline;padding:3px 5px;white-space:nowrap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-400.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-500.woff2) format("woff2");font-weight:500;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-700.woff2) format("woff2");font-weight:700;font-display:swap}:root{font-family:DM Sans,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;color:#252832;background:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--blue: #4d6bfe;--muted: #7d8592;--line: #e8eaf0;--surface: #f7f8fa}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid #4d6bfe;outline-offset:3px}svg{flex-shrink:0;vertical-align:middle}button{color:inherit}button svg{pointer-events:none}.tupo-logo{font-family:DM Sans,Arial,sans-serif;font-size:31px;line-height:1;font-weight:700;letter-spacing:-1.7px;color:#4d6bfe;display:inline-flex}.app-failure{max-width:640px;margin:20vh auto;padding:24px}.app-failure button,.app-failure a{padding:12px;display:inline-block}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}}