@charset "UTF-8";
:root{--paper:#f7f7f2;--white:#fff;--ink:#20221f;--muted:#73766f;--blue:#335be8;--pale:#edf0ff;--line:#d9dcd3;--heavy:2px solid var(--ink);--font:"Microsoft YaHei UI","PingFang SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:not-allowed}a{color:inherit;text-decoration:none}button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--blue);outline-offset:5px}img{display:block}p{margin:0}h1,h2,h3{margin:0;letter-spacing:-.06em}h1{font-size:clamp(66px,6.3vw,92px);font-weight:900;line-height:1.22}h2{font-size:clamp(36px,4vw,54px);font-weight:800;line-height:1.35}h3{font-size:22px;line-height:1.5;letter-spacing:-.035em}.wrap{width:min(1280px,calc(100% - 112px));margin:auto}
/* Navigation and shared controls */
.header{height:96px;border-bottom:var(--heavy);background:var(--paper);position:relative;z-index:5}.nav{height:100%;display:flex;align-items:center;gap:56px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:25px;font-weight:800;white-space:nowrap;letter-spacing:-1px}.nav-links{display:flex;gap:30px;font-size:13px;font-weight:600}.nav-links a:hover,.login-link:hover,.footer a:hover{color:var(--blue)}.nav-actions{display:flex;gap:25px;align-items:center;margin-left:auto}.login-link{font-size:13px;font-weight:600;white-space:nowrap}.button{border:var(--heavy);background:var(--ink);color:var(--paper);padding:17px 23px;min-height:56px;display:inline-flex;align-items:center;justify-content:center;gap:14px;font-weight:600;font-size:14px;line-height:1.4;white-space:nowrap;transition:background .18s,transform .18s}.button>span:last-child{margin-left:12px;font-size:19px}.button:hover{background:var(--blue);border-color:var(--blue);transform:translateY(-2px)}.button-small{min-height:42px;padding:9px 15px;font-size:12px}.button-small>span:last-child{font-size:17px;margin-left:9px}.button-outline{background:transparent;color:var(--ink)}.button-outline:hover{color:white}.text-link{display:inline-flex;gap:20px;align-items:center;font-size:13px;font-weight:600;border-bottom:1px solid currentColor;padding-bottom:5px;width:max-content;max-width:100%}.text-link:hover{color:var(--blue)}.menu-button{display:none;background:none;border:0;padding:10px}.menu-button span{display:block;width:21px;height:2px;background:var(--ink);margin:5px 0}.eyebrow{font-family:"Segoe UI",var(--font);font-size:10px;letter-spacing:1.8px;font-weight:700;line-height:1.7}.signal{display:inline-block;width:7px;height:7px;background:var(--blue);border-radius:50%;vertical-align:middle;flex-shrink:0}.avatar{display:inline-flex;align-items:center;justify-content:center;background:#dfe4d9;width:24px;height:24px;border-radius:50%;font-size:10px}
/* Hero and product illustration */
.hero{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;padding-top:70px;padding-bottom:66px;align-items:center}.hero-copy>.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:27px;letter-spacing:1.6px}.underline{position:relative;z-index:0;white-space:nowrap}.underline:after{content:"";position:absolute;height:10px;background:#bdcbff;bottom:9px;left:0;right:0;z-index:-1;transform:rotate(-2deg)}.hero-description{font-size:15px;line-height:1.95;color:#60645c;margin-top:26px}.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-top:32px}.hero-note{font-size:10px;color:var(--muted);margin-top:17px;display:flex;gap:10px}.hero-visual{min-width:0;padding-top:21px}.visual-caption{display:flex;justify-content:space-between;font-size:9px;font-family:monospace;font-weight:700;letter-spacing:1px;margin-bottom:13px}.mini-window{border:var(--heavy);background:white;box-shadow:7px 7px 0 #dfe5d8;transform:rotate(-1.5deg);transform-origin:center}.window-bar{height:38px;border-bottom:var(--heavy);display:flex;align-items:center;padding:0 13px;gap:18px;font-size:9px;font-weight:600;background:#f6f7f1}.window-dots{display:flex;gap:4px}.window-dots i{width:6px;height:6px;border:1.5px solid var(--ink);border-radius:50%}.mini-badge{margin-left:auto;color:var(--muted);font-size:8px}.mini-app{display:flex;min-height:324px}.mini-sidebar{width:124px;flex-shrink:0;background:#f2f3ed;border-right:1px solid var(--line);padding:20px 10px;display:flex;flex-direction:column;gap:7px;font-size:9px}.mini-brand{display:flex;align-items:center;font-size:15px;gap:6px;margin-bottom:19px;font-weight:800}.mini-sidebar>span{padding:10px 8px}.mini-sidebar .selected{color:var(--blue);background:#e1e7fc;font-weight:700}.mini-account{margin-top:auto;display:flex;align-items:center;gap:6px;padding-top:20px;font-size:8px}.mini-content{padding:25px 20px 17px;min-width:0;flex:1}.mini-heading{display:flex;align-items:start;gap:8px;justify-content:space-between;font-size:12px}.live-dot{color:var(--blue);font-size:8px;white-space:nowrap;padding-top:3px}.mini-tags{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 22px;font-size:7px;color:#74796c}.mini-tags span{padding:3px 5px;border:1px solid #d8dccf}.question-bubble{background:#f2f3ee;padding:12px;font-size:10px;line-height:1.7;max-width:93%}.question-bubble>span{font-size:7px;color:var(--muted)}.question-bubble p{margin-top:4px}.answer-bubble{background:#edf0ff;padding:14px;margin:12px 0 0 18px;position:relative;font-size:10px;line-height:1.9}.answer-bubble p+p{margin-top:9px}.answer-bubble p>span{font-weight:700;color:var(--blue)}.answer-symbol{font-size:21px;line-height:1;color:var(--blue);margin-bottom:8px}.answer-source{border-top:1px solid #d0d8f3;display:flex;justify-content:space-between;gap:4px;margin-top:13px;padding-top:8px;font-size:7px;color:#767c93}.mini-status{margin-top:18px;font-size:7px;color:var(--muted);display:flex;align-items:center;gap:6px}.mini-status .signal{width:4px;height:4px}.visual-bottom{display:flex;align-items:center;gap:16px;padding:23px 8px 0}.drawn-arrow{font-size:56px;font-family:serif;line-height:1;transform:rotate(-10deg)}.visual-bottom p{font-size:11px;line-height:1.8;color:var(--muted)}.visual-bottom strong{font-weight:600;color:var(--ink)}.outline-star{margin-left:auto;color:var(--blue);font-size:65px;font-weight:300;line-height:1}
/* Product narrative */
.value-strip{border-top:var(--heavy);border-bottom:var(--heavy);display:grid;grid-template-columns:repeat(3,1fr);padding:24px 0}.value-strip p{text-align:center;font-size:13px;font-weight:600}.value-strip p+p{border-left:1px solid var(--line)}.value-strip span{font-size:10px;color:var(--muted);margin-right:16px;font-family:monospace}.product-section{padding-top:101px;padding-bottom:97px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:35px;margin-bottom:43px}.section-heading .eyebrow,.principles-title .eyebrow,.faq-section .eyebrow,.closing .eyebrow{margin-bottom:18px}.section-intro{font-size:13px;line-height:1.9;color:var(--muted);padding-bottom:5px}.product-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-top:var(--heavy);border-left:var(--heavy)}.product-tabs button{padding:22px 25px;text-align:left;border:0;border-right:var(--heavy);border-bottom:var(--heavy);background:transparent;display:flex;align-items:center;gap:16px;font-weight:700;font-size:17px}.product-tabs button>span:first-child{font-family:monospace;font-size:11px;font-weight:400;color:var(--muted)}.tab-arrow{margin-left:auto;font-size:23px;font-weight:400}.product-tabs button[aria-selected=true]{background:var(--ink);color:white}.product-tabs button[aria-selected=true]>span:first-child{color:#c6cdc1}.product-tabs button:hover:not([aria-selected=true]){background:#e9ebe3}.feature-panel{border:var(--heavy);border-top:0;min-height:352px;display:grid;grid-template-columns:.8fr 1.2fr;background:#fff}.feature-copy{padding:48px 42px;display:flex;flex-direction:column;align-items:start}.feature-copy h3{font-size:29px;line-height:1.5;margin-bottom:18px}.feature-copy>p{font-size:12px;color:var(--muted);line-height:2;max-width:300px}.feature-copy .text-link{margin-top:auto;padding-top:25px;font-size:12px}.feature-illustration{border-left:1px solid var(--line);padding:32px 38px;background:#eef0e9;display:flex;flex-direction:column;justify-content:center;gap:12px;min-width:0}.sample-label{font-family:monospace;font-size:9px;color:#6c7365;letter-spacing:1px;margin-bottom:5px}.flow-steps{display:flex;border:1.5px solid var(--ink);background:#fff}.flow-steps span{padding:11px 0;flex:1;text-align:center;border-right:1px solid var(--line);font-size:9px}.flow-steps span:last-child{border:0}.flow-steps span b{display:block;font-size:13px;margin-bottom:4px}.sample-paper{border:1.5px solid var(--ink);background:#fff;padding:20px 24px;font-size:12px;line-height:1.9;box-shadow:4px 4px 0 #d5dacc}.sample-paper>span{display:block;font-size:9px;color:var(--muted);margin-bottom:8px}.sample-paper p+p{margin-top:12px}.sample-paper strong{color:var(--blue);font-weight:600}.sample-answer{background:var(--pale);border:1px solid #ced6f1;padding:13px 16px;margin-top:15px;font-size:11px}.sample-chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:16px}.sample-chips span{border:1px solid var(--line);padding:3px 7px;font-size:9px;color:var(--muted)}.product-foot{display:flex;align-items:center;justify-content:space-between;padding-top:19px;gap:16px}.product-foot>span{font-size:9px;color:var(--muted)}.product-foot .text-link{font-size:11px}.principles-section{background:var(--ink);color:var(--paper);padding:82px 0}.principles-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:90px}.principles-title h2 span{color:#c3d0ff}.principles-title>p:not(.eyebrow){font-size:13px;color:#b2b6ac;line-height:1.9;margin-top:23px}.big-mark{font-size:110px;line-height:1;margin-top:23px;color:#c3d0ff}.principle-list article{display:flex;gap:26px;padding:26px 0;border-top:1px solid #5d6256}.principle-list article:last-child{border-bottom:1px solid #5d6256}.principle-list article>span{font-family:monospace;font-size:11px;color:#b6bcae;padding-top:6px}.principle-list h3{font-size:21px;font-weight:600}.principle-list p{font-size:12px;color:#b2b6ac;line-height:2;margin-top:15px;max-width:430px}
/* Privacy, FAQ, closing */
.privacy-section{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;padding-top:91px;padding-bottom:87px;border-bottom:var(--heavy)}.privacy-label svg{width:45px;height:51px;stroke:var(--ink);stroke-width:2.5;margin-bottom:25px}.privacy-label .eyebrow{font-size:9px}.privacy-section h2{font-size:38px}.privacy-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:30px}.privacy-grid p{font-size:11px;color:var(--muted);line-height:2}.privacy-grid strong{display:block;color:var(--ink);font-size:13px;font-weight:600;margin-bottom:7px}.faq-section{padding-top:84px;padding-bottom:85px;display:grid;grid-template-columns:.85fr 1.15fr;gap:70px}.faq-section h2{font-size:36px}.faq-list details{border-top:1.5px solid var(--ink);padding:20px 0}.faq-list details:last-child{border-bottom:1.5px solid var(--ink)}.faq-list summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;font-size:13px;font-weight:600;line-height:1.6}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary>span{font-size:24px;line-height:1;font-weight:400}.faq-list details[open] summary>span{transform:rotate(45deg)}.faq-list details p{font-size:12px;line-height:2;color:var(--muted);padding:16px 30px 0 0}.closing{background:#dce5ff;border:var(--heavy);padding:52px 55px;display:flex;align-items:center;justify-content:space-between;gap:35px}.closing h2{font-size:46px}.closing .eyebrow{font-size:9px}.closing-actions{display:flex;align-items:start;flex-direction:column;gap:22px}.closing-actions .text-link{font-size:12px}.footer{padding-top:47px;padding-bottom:27px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}.footer .brand{font-size:22px}.footer>span{font-size:11px;color:var(--muted)}.footer>div{display:flex;margin-left:auto;gap:25px;font-size:11px}.footer small{width:100%;padding-top:20px;border-top:1px solid var(--line);font-size:9px;color:var(--muted);margin-top:12px}dialog{width:min(460px,calc(100% - 36px));border:var(--heavy);background:var(--paper);padding:40px;box-shadow:8px 8px 0 #20221f40;color:var(--ink)}dialog::backdrop{background:#20221f80}dialog .eyebrow{color:var(--blue);margin-bottom:18px}dialog h2{font-size:36px}dialog>p:not(.eyebrow){font-size:13px;color:var(--muted);line-height:2;margin-top:20px}.close-dialog{position:absolute;top:13px;right:16px;border:0;background:transparent;font-size:27px}.dialog-note{padding:15px;background:#e8ebe1;font-size:11px;line-height:1.9;margin:22px 0}dialog .button{width:100%;font-size:12px}.dialog-dismiss{display:block;margin:20px auto 0;background:none;border:0;border-bottom:1px solid currentColor;font-size:11px}.skip-link{position:fixed;top:-100px;left:10px;z-index:100;background:var(--blue);color:white;padding:10px}.skip-link:focus{top:10px}
/* Account and workbench previews */
.simple-header .nav{justify-content:space-between}.back-link{font-size:12px}.preview-notice{padding:11px 20px;text-align:center;font-size:11px;line-height:1.7;background:#e4eaff;border-bottom:1px solid #c9d3f4;color:#334a9f}.login-layout{display:grid;grid-template-columns:1fr 1fr;min-height:calc(100vh - 136px)}.login-story{padding:90px max(50px,calc((100vw - 1280px)/2));padding-right:55px;border-right:var(--heavy);display:flex;flex-direction:column;justify-content:center}.login-story h1{font-size:70px;margin:25px 0}.login-story>p:not(.eyebrow){font-size:14px;line-height:2;color:var(--muted)}.login-story .big-mark{color:var(--blue);margin-top:45px}.login-form-side{display:flex;align-items:center;justify-content:center;padding:60px 35px;background:white}.login-form{width:min(360px,100%)}.login-form h2{font-size:34px;margin-bottom:10px}.login-form>p{font-size:12px;line-height:1.9;color:var(--muted)}.login-form form{margin-top:32px}.field-label{display:block;font-size:12px;font-weight:600;margin:18px 0 9px}.form-input{width:100%;border:1.5px solid #a8ada1;background:var(--paper);padding:14px 15px;outline-offset:3px;border-radius:0;font-size:13px}.code-row{display:flex;gap:9px}.code-row input{min-width:0}.code-row button{border:1.5px solid var(--ink);background:#fff;font-size:11px;padding:0 14px;white-space:nowrap}.login-form form>.button{width:100%;margin-top:23px}.form-status{font-size:11px;color:var(--blue);line-height:1.8;min-height:24px;padding-top:10px}.form-divider{display:flex;align-items:center;gap:15px;font-size:10px;color:var(--muted);margin:20px 0}.form-divider:before,.form-divider:after{content:"";height:1px;background:var(--line);flex:1}.login-form>.button{width:100%;font-size:12px}.login-privacy{font-size:10px!important;margin-top:22px;line-height:1.9}.workbench{display:flex;min-height:calc(100vh - 132px);background:#fff}.work-sidebar{width:214px;flex-shrink:0;border-right:var(--heavy);background:#f0f2e9;padding:28px 17px;display:flex;flex-direction:column}.workspace-label{font-size:9px;letter-spacing:1.3px;color:var(--muted);padding:0 13px 21px}.workspace-nav{display:flex;flex-direction:column;gap:5px}.workspace-nav button{background:none;border:1.5px solid transparent;padding:13px 14px;text-align:left;font-size:12px;display:flex;align-items:center;gap:11px}.workspace-nav button span{font-size:17px;width:22px}.workspace-nav button[aria-current=page]{background:var(--ink);color:white}.workspace-nav button:hover:not([aria-current=page]){border-color:var(--ink)}.workspace-account{margin-top:auto;padding:30px 10px 0;display:flex;gap:12px;align-items:center;font-size:11px}.workspace-account small{display:block;color:var(--muted);font-size:9px;margin-top:5px}.workspace-main{flex:1;padding:40px 46px;min-width:0;max-width:1180px}.workspace-heading{display:flex;align-items:start;justify-content:space-between;gap:15px;margin-bottom:30px}.workspace-heading h1{font-size:32px;line-height:1.4;letter-spacing:-1px}.workspace-heading p{font-size:12px;color:var(--muted);margin-top:8px;line-height:1.8}.preview-tag{font-size:9px;border:1px solid var(--line);padding:6px 9px;white-space:nowrap}.stepper{display:flex;gap:7px;flex-wrap:wrap;border-top:var(--heavy);border-bottom:var(--heavy);padding:15px 0;margin-bottom:28px}.stepper a{font-size:10px;padding:6px 10px;color:var(--muted)}.stepper a:hover{background:var(--pale);color:var(--blue)}.stepper b{display:inline-flex;width:20px;height:20px;align-items:center;justify-content:center;border:1px solid currentColor;margin-right:6px}.work-section{border:1px solid var(--line);padding:26px 28px;margin:18px 0;scroll-margin-top:22px}.work-section h2{font-size:18px;letter-spacing:-.3px;display:flex;gap:15px;align-items:center}.work-section h2>span{font-size:10px;font-family:monospace;color:var(--muted);font-weight:400}.work-section>p{font-size:11px;color:var(--muted);line-height:1.9;margin-top:12px}.role-chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.role-chips button{background:#fff;border:1px solid #c4c9bc;padding:9px 13px;font-size:11px}.role-chips button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:white}.work-section .field-label{font-size:11px}.work-section textarea{resize:vertical;min-height:115px;line-height:1.9}.work-section .button-small{margin-top:15px}.work-note{font-size:10px;color:var(--muted);margin-top:12px;line-height:1.8}.knowledge-row{display:flex;align-items:center;gap:15px;margin-top:18px;padding:17px;background:#eff2e9}.knowledge-row strong{font-size:12px}.knowledge-row small{display:block;color:var(--muted);font-size:10px;margin-top:6px}.knowledge-icon{font-size:26px}.knowledge-row .preview-tag{margin-left:auto}.switch-row{display:flex;gap:15px;align-items:center;margin-top:18px;font-size:12px}.switch{width:38px;height:22px;padding:3px;border:0;border-radius:20px;background:#c4c9bd;flex-shrink:0}.switch:before{content:"";display:block;background:#fff;border-radius:50%;width:16px;height:16px;transition:transform .15s}.switch[aria-checked=true]{background:var(--blue)}.switch[aria-checked=true]:before{transform:translateX(16px)}.work-start{display:flex;justify-content:space-between;align-items:center;gap:15px;padding-top:10px;font-size:11px;color:var(--muted)}.workspace-status{font-size:11px;line-height:1.9;color:var(--blue);margin:15px 0}.demo-response{border-left:3px solid var(--blue);background:var(--pale);padding:22px;margin-top:20px;font-size:13px;line-height:2}.empty-state{padding:50px 25px;text-align:center;border:1.5px dashed #c0c6b6}.empty-state .big-mark{font-size:55px;color:var(--blue);margin:0 0 20px}.empty-state h2{font-size:23px}.empty-state p{font-size:12px;color:var(--muted);line-height:1.9;margin:15px auto;max-width:450px}.empty-state .button{margin-top:12px}.workspace-footer{margin-top:30px;border-top:1px solid var(--line);padding-top:16px;font-size:9px;color:var(--muted)}
@media(min-width:1500px){.hero{padding-top:85px;padding-bottom:80px;gap:55px}.mini-app{min-height:360px}.mini-content{padding:28px 25px}.hero-visual{padding-left:10px}}
@media(max-width:1150px){.wrap{width:calc(100% - 64px)}.nav{gap:35px}.nav-links{gap:22px}.nav-actions{gap:19px}.hero{gap:28px;padding-top:55px}.hero-actions{gap:18px}.hero-actions .button{font-size:12px;padding:15px}.hero-actions .text-link{font-size:11px}.mini-sidebar{width:100px;padding:16px 7px;font-size:8px}.mini-content{padding:20px 14px 15px}.mini-heading{font-size:10px}.live-dot{display:none}.mini-tags{font-size:6px}.answer-bubble{margin-left:8px;font-size:9px}.question-bubble{font-size:9px}.feature-copy{padding:35px 30px}.feature-copy h3{font-size:26px}.feature-illustration{padding:30px}.principles-layout{gap:55px}.privacy-section,.faq-section{gap:40px}.closing{padding:43px}.workspace-main{padding:35px 30px}.work-sidebar{width:190px}.login-story h1{font-size:60px}.login-story{padding-left:40px}}
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form{margin-top:25px}.workbench{display:block}.work-sidebar{width:auto;border-right:0;border-bottom:var(--heavy);padding:12px 20px;display:block}.workspace-label,.workspace-account{display:none}.workspace-nav{flex-direction:row;overflow:auto;gap:8px;padding:2px 0 7px}.workspace-nav button{flex-shrink:0;padding:9px 11px;font-size:10px}.workspace-nav button span{display:none}.workspace-main{padding:26px 20px}.workspace-heading{margin-bottom:24px}.workspace-heading h1{font-size:28px}.workspace-heading p{font-size:11px}.workspace-heading .preview-tag{font-size:8px}.stepper{padding:11px 0;gap:3px;margin-bottom:23px}.stepper a{font-size:8px;padding:4px 1px}.stepper b{width:16px;height:16px;margin-right:3px}.work-section{padding:21px 17px;margin:14px 0}.work-section h2{font-size:16px;gap:10px}.work-section h2>span{font-size:8px}.role-chips{gap:6px}.role-chips button{font-size:10px;padding:8px 9px}.work-section .form-input{font-size:11px}.knowledge-row{padding:13px 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@media(max-width:370px){.wrap{width:calc(100% - 30px)}.nav-actions{gap:9px}.login-link{font-size:10px}.nav-actions>.button-small{font-size:9px;padding:8px}.nav-actions>.button-small span{display:none}.hero-actions{gap:14px}.hero-actions .text-link{font-size:9px}.hero h1{font-size:60px}.mini-sidebar{width:80px;font-size:6px}.mini-content{padding:15px 10px}.mini-heading{font-size:9px}.mini-tags{gap:3px;font-size:5px}.mini-account{font-size:5px}.footer>div{gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
