@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.block{display:block}}:root{--brand:#149766;--brand-dark:#0f7f56;--brand-soft:#e8f6ef;--text:#1c2422;--muted:#6b7472;--line:#e4e8e7;--surface:#fff;--sidebar:#f8faf9;--canvas:#fbfcfc}*{box-sizing:border-box}html,body{height:100%}body{color:var(--text);background:var(--canvas);margin:0;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px}button,input,textarea{font:inherit}button{color:inherit}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline-offset:2px;outline:3px solid #1497663d}.app-shell{background:var(--surface);height:100dvh;min-height:640px;display:flex;overflow:hidden}.sidebar{border-right:1px solid var(--line);background:var(--sidebar);flex-direction:column;flex:0 0 286px;width:286px;padding:24px 18px 18px;display:flex}.brand-row{align-items:center;gap:12px;padding:0 4px 20px;font-size:1.15rem;font-weight:700;display:flex}.brand-mark,.assistant-avatar{color:#fff;background:var(--brand);place-items:center;display:grid}.brand-mark{border-radius:13px;width:40px;height:40px}.assistant-avatar{background:var(--brand-soft);width:36px;height:36px;color:var(--brand);border-radius:50%;flex:none}.new-chat-button{color:#fff;background:var(--brand);cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;gap:8px;width:100%;height:46px;font-weight:650;transition:background .16s,transform .16s;display:flex}.new-chat-button:hover{background:var(--brand-dark)}.new-chat-button:active{transform:translateY(1px)}.search-box{color:#8a9491;border:1px solid var(--line);background:#fff;border-radius:11px;align-items:center;gap:9px;height:43px;margin-top:16px;padding:0 12px;display:flex}.search-box input{width:100%;min-width:0;color:var(--text);background:0 0;border:0;outline:0}.search-box input::placeholder{color:#9aa3a1}.search-box kbd{color:#8d9693;white-space:nowrap;background:#fafbfb;border:1px solid #e4e7e6;border-radius:5px;padding:2px 5px;font-size:.7rem}.conversation-nav{margin-top:24px;overflow:hidden auto}.nav-section-title{margin:0 8px 8px;font-size:.88rem;font-weight:650}.conversation-row{border-radius:9px;margin-bottom:2px;position:relative}.conversation-item{text-align:left;cursor:pointer;background:0 0;border:0;border-radius:9px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;width:100%;height:44px;padding:0 38px 0 12px;display:grid}.conversation-item:disabled{opacity:.72}.conversation-row.active .conversation-item{color:#163e31;background:#e5f3ec}.conversation-item span{text-overflow:ellipsis;white-space:nowrap;font-size:.91rem;font-weight:600;overflow:hidden}.conversation-item small{color:#7e8a86;font-size:.72rem}.delete-chat-button{color:#82908b;opacity:0;cursor:pointer;background:0 0;border:0;border-radius:7px;place-items:center;width:30px;height:30px;display:grid;position:absolute;top:7px;right:6px}.conversation-row:hover .delete-chat-button,.delete-chat-button:focus-visible{opacity:1}.delete-chat-button:hover{color:#a63838;background:#fff0f0}.empty-history{color:#96a09d;align-items:center;gap:7px;margin:14px 12px;font-size:.78rem;line-height:1.6;display:flex}.sidebar-footer{border-top:1px solid var(--line);margin-top:auto;padding-top:14px}.sidebar-footer button{color:#4d5754;text-align:left;opacity:.78;background:0 0;border:0;align-items:center;gap:11px;width:100%;height:42px;padding:0 10px;font-size:.9rem;display:flex}.chat-panel{background:#fff;flex-direction:column;flex:1;min-width:0;display:flex}.topbar{border-bottom:1px solid var(--line);flex:0 0 72px;justify-content:space-between;align-items:center;gap:16px;height:72px;padding:0 28px;display:flex}.title-wrap{align-items:center;gap:7px;min-width:0;display:flex}.title-wrap h1{text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:1.12rem;font-weight:700;overflow:hidden}.title-input{width:min(340px,42vw);height:36px;color:var(--text);background:#fbfdfc;border:1px solid #b9cec5;border-radius:8px;outline:0;padding:0 9px;font-size:1rem;font-weight:650}.topbar-actions{align-items:center;gap:18px;display:flex}.model-pill{border:1px solid var(--line);border-radius:11px;align-items:center;gap:7px;height:38px;padding:0 13px;font-size:.88rem;font-weight:600;display:flex}.model-pill svg{color:var(--brand)}.thinking-control{color:#394340;cursor:pointer;align-items:center;gap:9px;font-size:.84rem;display:flex}.thinking-control input{opacity:0;pointer-events:none;position:absolute}.switch{background:#cbd1cf;border-radius:999px;width:38px;height:22px;transition:background .18s;position:relative}.switch:after{content:"";background:#fff;border-radius:50%;width:16px;height:16px;transition:transform .18s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #0000002e}.thinking-control input:checked+.switch{background:var(--brand)}.thinking-control input:checked+.switch:after{transform:translate(16px)}.icon-button{color:#66706d;cursor:pointer;background:0 0;border:0;border-radius:9px;place-items:center;width:36px;height:36px;display:grid}.icon-button:hover{background:#f1f4f3}.messages-scroll{overscroll-behavior:contain;scroll-behavior:smooth;flex:1;min-height:0;overflow-y:auto}.page-error{color:#922f2f;background:#fff3f3;border:1px solid #f0caca;border-radius:10px;justify-content:space-between;align-items:center;gap:12px;width:min(900px,100% - 40px);margin:10px auto 0;padding:10px 12px;font-size:.88rem;display:flex}.page-error button{width:28px;height:28px;color:inherit;cursor:pointer;background:0 0;border:0;border-radius:6px;flex:none;place-items:center;display:grid}.page-error-actions{align-items:center;gap:4px;display:flex}.page-error-actions .retry-button{background:#fff;border:1px solid #e4baba;width:auto;padding:0 10px;font-weight:650}.page-error-actions .retry-button:hover{background:#ffe9e9}.messages-list{width:min(860px,100% - 48px);margin:0 auto;padding:34px 0 24px}.history-loading{color:#7b8582;justify-content:center;align-items:center;gap:8px;min-height:180px;font-size:.9rem;display:flex}.message{gap:14px;margin:0 0 30px;display:flex}.message.user{justify-content:flex-end}.message-stack{min-width:0;max-width:min(720px,88%)}.message.user .message-content{background:var(--brand-soft);border-radius:18px 18px 5px;padding:11px 16px}.message.user p{white-space:pre-wrap;margin:0;line-height:1.7}.message.assistant .message-content{padding:6px 4px 2px}.markdown-body{color:#28312f;overflow-wrap:anywhere;line-height:1.78}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.markdown-body h1,.markdown-body h2,.markdown-body h3{color:#18211f;margin:1.3em 0 .55em;line-height:1.35}.markdown-body h1{font-size:1.45rem}.markdown-body h2{font-size:1.25rem}.markdown-body h3{font-size:1.08rem}.markdown-body p,.markdown-body ul,.markdown-body ol,.markdown-body blockquote,.markdown-body table{margin:.65em 0}.markdown-body ul,.markdown-body ol{padding-left:1.5rem}.markdown-body code:not(.code-block code){color:#8c2f4f;background:#eef1f0;border-radius:5px;padding:.16em .38em;font-size:.88em}.markdown-body table{border-collapse:collapse;width:100%;font-size:.92rem}.markdown-body th,.markdown-body td{text-align:left;border:1px solid #dde2e0;padding:9px 12px}.markdown-body th{background:#f5f7f6}.markdown-body blockquote{color:#5d6865;border-left:3px solid #c9ded4;padding-left:14px}.code-block{border:1px solid #e0e5e3;border-radius:11px;margin:14px 0;overflow:hidden}.code-toolbar{color:#65706c;background:#eef2f0;justify-content:space-between;align-items:center;height:37px;padding:0 11px 0 14px;font-size:.74rem;display:flex}.code-toolbar button{color:#4f5a56;cursor:pointer;background:0 0;border:0;align-items:center;gap:5px;font-size:.74rem;display:flex}.reasoning{color:#66716d;background:#f7faf8;border-left:2px solid #b9d9ca;margin:0 0 13px;padding:10px 13px;font-size:.88rem}.reasoning summary{color:#3d4b47;cursor:pointer;font-weight:600}.reasoning p{white-space:pre-wrap;margin:8px 0 0;line-height:1.6}.thinking-line{color:#7b8582;align-items:center;gap:5px;font-size:.9rem;display:flex}.thinking-line span{background:var(--brand);border-radius:50%;width:6px;height:6px;animation:1.15s ease-in-out infinite pulse}.thinking-line span:nth-child(2){animation-delay:.15s}.thinking-line span:nth-child(3){margin-right:3px;animation-delay:.3s}@keyframes pulse{50%{opacity:.5}}.spin{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.message-actions{align-items:center;gap:2px;height:34px;display:flex}.message-actions button{color:#75807c;cursor:pointer;background:0 0;border:0;border-radius:7px;place-items:center;width:30px;height:30px;display:grid}.message-actions button:hover{color:#31403b;background:#f1f4f3}.inline-error{color:#9f2f2f;background:#fff0f0;border-radius:9px;margin-top:10px;padding:10px 12px;font-size:.9rem}.incomplete-answer{color:#68736f;margin:0;font-size:.9rem}.composer-area{background:linear-gradient(#fff0,#fff 18%);flex:none;padding:10px 28px 16px}.composer{background:#fff;border:1px solid #d8dedc;border-radius:19px;width:min(900px,100%);margin:0 auto;padding:12px 12px 10px 16px;box-shadow:0 7px 30px #18372c12}.composer:focus-within{border-color:#a9cabc;box-shadow:0 7px 30px #18372c17,0 0 0 3px #14976612}.composer textarea{resize:vertical;width:100%;min-height:28px;max-height:150px;color:var(--text);background:0 0;border:0;outline:0;line-height:1.55}.composer textarea::placeholder{color:#9aa3a1}.composer-footer{justify-content:space-between;align-items:center;gap:12px;margin-top:7px;display:flex}.composer-tools{align-items:center;gap:12px;min-width:0;display:flex}.thinking-badge{color:#798380;align-items:center;gap:6px;font-size:.78rem;display:flex}.thinking-badge.active{color:var(--brand-dark)}.send-button{color:#fff;background:var(--brand);cursor:pointer;border:0;border-radius:50%;place-items:center;width:38px;height:38px;display:grid}.send-button:hover{background:var(--brand-dark)}.send-button:disabled{cursor:not-allowed;background:#c8cfcc}.send-button.stop{color:#34403c;background:#e7ecea}.composer-note{color:#8b9491;text-align:center;margin:8px auto 0;font-size:.72rem}.menu-mobile,.close-mobile,.sidebar-backdrop{display:none}@media (max-width:1024px){.sidebar{flex-basis:250px;width:250px}.messages-list{width:min(800px,100% - 36px)}.topbar,.composer-area{padding-inline:20px}}@media (max-width:768px){.app-shell{min-height:520px}.sidebar{z-index:30;width:min(300px,88vw);padding-top:max(20px, env(safe-area-inset-top));padding-bottom:max(16px, env(safe-area-inset-bottom));transition:transform .22s;position:fixed;inset:0 auto 0 0;transform:translate(-105%);box-shadow:18px 0 45px #162d2524}.sidebar.sidebar-open{transform:translate(0)}.sidebar-backdrop{z-index:20;background:#12201b4d;border:0;display:block;position:fixed;inset:0}.menu-mobile,.close-mobile{display:grid}.close-mobile{margin-left:auto}.topbar{flex-basis:62px;height:62px;padding-inline:10px}.topbar-actions{gap:6px}.model-pill{padding:0 9px}.thinking-control>span:first-child{display:none}.title-wrap h1{max-width:32vw;font-size:1rem}.messages-list{width:calc(100% - 24px);padding-top:24px}.message{gap:9px;margin-bottom:24px}.assistant-avatar{width:31px;height:31px}.message-stack{max-width:calc(100% - 40px)}.composer-area{padding:8px 10px max(10px, env(safe-area-inset-bottom))}.composer{border-radius:16px}.composer-note{display:none}.composer-tools{gap:5px}.thinking-badge{font-size:0}.thinking-badge svg{width:16px;height:16px}}@media (max-width:480px){.topbar{gap:6px}.title-wrap{flex:1}.title-wrap h1{max-width:38vw}.topbar-actions{flex:none}.model-pill{justify-content:center;width:38px;padding:0}.model-pill span{display:none}.thinking-control{gap:0}.page-error{align-items:flex-start;width:calc(100% - 20px)}.message-stack{max-width:calc(100% - 38px)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.auth-screen{background:var(--canvas);min-height:100dvh;color:var(--text);place-items:center;padding:24px;display:grid}.auth-card{background:#fff;border:1px solid #e4e6ec;border-radius:20px;width:min(100%,420px);padding:32px;box-shadow:0 12px 40px #143c280a}.auth-brand{color:var(--brand);align-items:center;gap:10px;font-size:20px;font-weight:650;display:flex}.auth-card h1{margin:24px 0 8px;font-size:24px}.auth-card p,.auth-card small{color:#626779;font-size:13px;line-height:1.7}.auth-card form{gap:12px;margin-top:20px;display:grid}.auth-card label{gap:8px;font-size:14px;display:grid}.auth-card input{width:100%;color:var(--text);background:#fff;border:1px solid #c9cdd8;border-radius:8px;padding:11px 12px}.auth-card input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.auth-submit{background:var(--brand);color:#fff;cursor:pointer;border-radius:8px;margin-top:8px;padding:12px}.auth-switch{color:var(--brand);cursor:pointer;padding:8px}.auth-card button:disabled{opacity:.6;cursor:wait}.auth-card .auth-warning{margin-top:24px}.account-name{overflow-wrap:anywhere;color:#73788a;padding:8px 12px;font-size:13px}.auth-notice{z-index:100;color:#a83c32;background:#fff0ee;border-radius:8px;padding:12px;position:fixed;top:8px;left:50%;transform:translate(-50%)}.usage-panel{color:var(--muted);gap:5px;padding:8px 12px;font-size:12px;display:grid}.usage-panel small{font-size:10px;line-height:1.5}.usage-panel button{padding:4px 0;font-size:12px}.input-count{color:var(--muted);white-space:nowrap;font-size:11px}.input-count.over-limit{color:#a63838}