:root{--paper:#f8f8f2;--ink:#2e493e;--muted:#7e9081;--brand:#397968;--line:#e1e7db;--mint:#edf2e8;--app-height:100dvh;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-size:16px}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--paper)}[hidden]{display:none!important}button,input,textarea,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer;border:0}a{color:var(--brand);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #6f9b83;outline-offset:3px}button:disabled{opacity:.5;cursor:default}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}h1,h2,h3,p{margin-top:0}.shell{height:var(--app-height);max-width:760px;margin:auto;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top);background:var(--paper);min-width:0}.header{padding:20px 23px 16px;display:flex;justify-content:space-between;align-items:center;flex-shrink:0}.brand{display:flex;align-items:center;gap:11px}.brand-icon{background:var(--brand);color:white;border-radius:14px;width:44px;height:44px;display:grid;place-items:center;font-size:38px;line-height:1;box-shadow:0 4px 12px #39796816}.brand strong{display:block;font-size:20px;letter-spacing:-.5px}.brand small{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);margin-top:4px}nav{display:flex;align-items:center;gap:8px}.quiet{padding:12px 0;font-size:12px;color:var(--muted);text-decoration:none}.icon-button{width:44px;height:44px;background:transparent;border-radius:12px;color:var(--muted);display:grid;place-items:center;font-size:20px}.icon-button:hover{background:var(--mint)}.icon-button circle{fill:var(--paper)}.reading-bar{display:flex;align-items:center;gap:7px;margin:0 23px;padding:0 0 13px;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted);min-height:45px;flex-shrink:0}.reading-bar .text-button{margin-left:auto}.dot,.speed-dot{display:inline-block;flex-shrink:0;width:5px;height:5px;background:#85a985;border-radius:50%}.text-button{background:none;font-size:11px;color:var(--muted);padding:10px 0;min-height:40px}.source-note{font-size:12px;line-height:1.6;padding:10px 22px;background:#f4eadc;color:#886c48;flex-shrink:0;max-height:90px;overflow:auto}.conversation{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:0 24px;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#d3dfcd transparent}.welcome{min-height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:26px 0 30px}.welcome-mark{width:88px;height:88px;background:#e9efe2;color:var(--brand);border-radius:30px;display:grid;place-items:center;font-size:64px;position:relative;margin-bottom:27px;font-family:Georgia,serif;font-weight:400}.welcome-mark i{position:absolute;font-size:13px;right:14px;top:11px;font-style:normal}.eyebrow{font-size:10px;font-weight:500;color:#86977e;letter-spacing:2px;margin-bottom:11px}.welcome h1{font-family:"Songti SC","Noto Serif SC",Georgia,serif;font-weight:500;font-size:32px;line-height:1.45;letter-spacing:1px;margin:0 0 14px;color:#374f40}.welcome p{color:var(--muted);font-size:13px;line-height:1.9;margin:0 0 24px}.primary{background:var(--brand);color:white;border-radius:13px;min-height:48px;padding:12px 20px;display:flex;gap:20px;align-items:center;justify-content:space-between;font-size:14px;font-weight:500;box-shadow:0 3px 9px #39796812}.primary:hover{background:#2e6657}.welcome>.primary{min-width:210px}.privacy-note{display:flex;align-items:center;gap:6px;font-size:10px;color:#99a48e;margin-top:21px}.privacy-note svg{width:13px;height:13px;stroke-width:1.3}.suggestions{display:flex;gap:7px;flex-wrap:wrap;justify-content:center}.suggestions button{padding:12px 10px;min-height:44px;border-radius:10px;background:#edf2e6;color:#6f8364;font-size:11px;border:1px solid #e1e9d9}.composer-area{flex-shrink:0;padding:12px 20px calc(8px + env(safe-area-inset-bottom));background:linear-gradient(0deg,#f3f6ed,var(--paper));border-top:1px solid var(--line)}.composer-options{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;gap:8px}.context-label{font-size:10px;color:#88967d;white-space:nowrap}.model-select{display:flex;align-items:center;gap:5px;background:#eef2e5;border:1px solid #e2e8d8;border-radius:8px;padding:0 8px;min-height:36px;color:#799064;font-size:12px}.model-select select{border:0;appearance:none;background:none;color:inherit;font-size:12px;padding:7px 0;max-width:153px;outline:0}.model-select select:focus-visible{outline:2px solid #6f9b83}.composer{border:1px solid #d5e1ca;border-radius:18px;background:#fff;padding:12px 13px 9px;box-shadow:0 4px 16px #43523904}.composer:focus-within{border-color:#8dab7f;box-shadow:0 0 0 3px #83a6740b}textarea{color:var(--ink);font-size:16px;line-height:1.6;border:1px solid var(--line);border-radius:12px;padding:12px;width:100%;resize:none;outline:0;scrollbar-width:thin}textarea::placeholder,input::placeholder{color:#a6b29c}.composer textarea{border:0;min-height:36px;max-height:130px;padding:0;background:none;border-radius:0}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px}#composer-hint{font-size:10px;color:#a4af99;line-height:1.5}.send-button{height:44px;width:44px;border-radius:13px;background:var(--brand);color:white;display:grid;place-items:center;flex-shrink:0}.send-button:disabled{background:#d5e2ce;opacity:1}.stop-glyph{display:none}.busy .stop-glyph{display:block;fill:currentColor;stroke:none}.busy .send-glyph{display:none}.footer-status{display:flex;gap:8px;justify-content:space-between;align-items:center;min-height:25px;font-size:10px;color:#96a28b}#status{overflow-wrap:anywhere}.footer-status .text-button{min-height:30px;flex-shrink:0}.turn{margin:25px 0 30px;min-width:0}.user-row{display:flex;justify-content:flex-end;margin-bottom:22px}.user-bubble{max-width:90%;padding:11px 15px;border-radius:17px 17px 3px 17px;background:#eaf0e3;border:1px solid #e1e9d9;color:#526b48;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.8}.assistant-meta{display:flex;align-items:center;gap:7px;font-size:11px;color:#a0aa96;margin-bottom:12px;flex-wrap:wrap}.assistant-meta .spark{font-size:22px;color:var(--brand);line-height:1}.assistant-meta strong{color:#6c805c;font-size:12px}.answer{font-size:16px;line-height:1.9;color:#435940;overflow-wrap:anywhere;min-width:0;max-width:100%}.answer p{margin:0 0 13px}.answer p:last-child{margin-bottom:0}.answer h1,.answer h2,.answer h3{font-size:18px;line-height:1.5;margin:18px 0 10px}.answer ul,.answer ol{padding-left:23px}.answer li{margin:5px 0}.answer blockquote{border-left:3px solid #b8cbb1;padding:7px 13px;margin:12px 0;background:#eff3e9}.answer pre{max-width:100%;overflow-x:auto;font:13px/1.7 ui-monospace,monospace;background:#edf2e7;border:1px solid #e1e8d9;border-radius:12px;padding:13px;white-space:pre}.answer code{font-family:ui-monospace,monospace;font-size:.85em;background:#edf2e7;padding:2px 4px;border-radius:4px}.answer pre code{padding:0;background:none;white-space:pre}.answer .table-wrap{max-width:100%;overflow-x:auto;margin:14px 0}.answer table{border-collapse:collapse;min-width:100%;font-size:13px}.answer th,.answer td{border:1px solid #dce5d3;padding:8px;text-align:left;min-width:80px}.answer th{background:#edf2e6}.answer .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:16px 10px;margin:15px 0;border:1px solid #e0e8d8;background:#f0f4e9;border-radius:12px}.answer .katex-display>.katex{white-space:nowrap}.answer .katex{font-size:1.05em}.answer .katex-error{color:#9c713f!important;white-space:pre-wrap}.answer-actions{display:flex;align-items:center;justify-content:space-between;color:#a2ae94;font-size:10px;margin-top:8px}.copy-answer{background:none;color:#8d9f7b;min-height:44px;padding:8px 0;font-size:11px}.error-text,.turn-error{color:#9a653f;font-size:13px;line-height:1.7;overflow-wrap:anywhere}.turn-error{background:#f6ecde;border-radius:10px;padding:10px 12px;margin:10px 0}.typing{letter-spacing:4px;color:#8aa27a;animation:pulse 1.4s infinite}dialog{border:1px solid var(--line);border-radius:24px;color:var(--ink);background:var(--paper);width:calc(100% - 24px);max-width:540px;max-height:calc(90dvh - env(safe-area-inset-top));padding:22px;overflow-y:auto;overscroll-behavior:contain}dialog::backdrop{background:#243c3266;backdrop-filter:blur(4px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:10px}.dialog-head h2{font-size:22px;font-weight:550;margin:0}.dialog-head .eyebrow{font-size:9px}label{display:block;color:#79876e;font-size:12px;margin-bottom:8px}#source-form textarea{background:#fff;max-height:27dvh}#source-form>.primary{width:100%;margin-top:12px}.source-tools{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:8px}#char-count{font-size:10px;color:#96a187}.secondary{background:#edf2e4;border:1px solid #dce7d2;border-radius:10px;color:#668054;padding:10px 13px;font-size:12px;min-height:44px}.divider{display:flex;align-items:center;gap:12px;font-size:10px;color:#9aa58e;margin:22px 0}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--line)}.file-button{display:flex;align-items:center;gap:12px;background:#eff3e7;border:1px dashed #cddac2;border-radius:13px;padding:16px 12px;cursor:pointer}.file-button div{flex:1}.file-button strong{font-size:13px;font-weight:500;display:block}.file-button small{display:block;font-size:10px;color:#9aa58d;margin-top:4px;line-height:1.6}.file-button svg{width:25px;flex-shrink:0}.fineprint{font-size:11px;line-height:1.8;color:#97a088;margin:16px 0 0}.setting-card{padding:17px;background:#f0f3e8;border:1px solid #e1e8d8;border-radius:14px;margin-bottom:16px}.setting-card h3{font-size:16px;font-weight:500;margin-bottom:10px}.setting-card a{font-size:12px;display:inline-block;margin-top:10px}.setting-card .fineprint{margin:0 0 12px}#token-result{margin-top:15px}.danger{color:#9b704f;margin-top:18px}.login-screen{min-height:var(--app-height);display:grid;place-items:center;padding:25px;overflow-y:auto;height:100%}.login-card{width:100%;max-width:350px}.login-card .large-mark{font-size:70px;color:var(--brand);margin-bottom:22px;line-height:1}.login-card h1{font-size:38px;margin-bottom:13px;letter-spacing:-1px}.login-card>p{color:var(--muted);line-height:1.8;font-size:14px;margin-bottom:27px}.login-card form{margin-top:30px}.login-card input{width:100%;border:1px solid #d5e1cb;background:white;color:var(--ink);border-radius:12px;padding:14px 13px;font-size:16px}.login-card .primary{margin-top:12px;width:100%}.login-card .fineprint{font-size:11px}.login-card .eyebrow{font-size:8px;letter-spacing:1.4px}#toast{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:max-content;max-width:88%;padding:12px 18px;background:#304c3fee;color:#fff;border-radius:12px;font-size:12px;z-index:9;box-shadow:0 4px 20px #0001}.help-page{height:auto;overflow:auto}.help-page main{max-width:720px;margin:0 auto;padding:24px 22px 60px}.help-page h1{font-size:30px}.help-page h2{font-size:21px;margin-top:35px}.help-page p,.help-page li{font-size:14px;line-height:1.95}.help-page li{padding-left:3px;margin:9px 0}.help-page pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#edf2e7;padding:15px;border-radius:12px;font-size:12px;line-height:1.8}.help-page code{font-size:12px;overflow-wrap:anywhere}.help-page .warning{padding:13px;background:#f3eade;border-radius:12px;color:#8c704b}.help-page .back{display:inline-block;margin-bottom:22px}.help-page input{width:100%;padding:10px;margin:5px 0;border:1px solid var(--line);border-radius:9px;color:var(--ink);background:white}
@media(min-width:760px){body{background:#eef1e7}.shell{border-left:1px solid var(--line);border-right:1px solid var(--line)}.header{padding-top:25px}.conversation{padding:0 40px}.welcome h1{font-size:38px}.composer-area{padding-left:32px;padding-right:32px}.reading-bar{margin-left:32px;margin-right:32px}}
@media(max-height:630px){.header{padding-top:10px;padding-bottom:8px}.welcome{padding:20px 0}.welcome-mark{width:55px;height:55px;border-radius:19px;font-size:44px;margin-bottom:15px}.welcome h1{font-size:26px}.welcome p{margin-bottom:15px}.privacy-note{margin-top:15px}.reading-bar{padding-bottom:6px;min-height:38px}.composer-area{padding-top:8px}.composer-options{margin-bottom:5px}dialog{max-height:92dvh}}
@media(max-width:350px){.header{padding-left:16px;padding-right:12px}.brand strong{font-size:18px}.reading-bar{margin:0 16px}.conversation{padding:0 17px}.composer-area{padding-left:13px;padding-right:13px}.context-label{font-size:9px}.model-select select{font-size:11px}.welcome h1{font-size:29px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}@keyframes pulse{50%{opacity:.3}}