/* Original INT-AI logo; new editorial visual layer over the legacy Go SSR architecture.
   Design dials: variance 6 / motion 3 / density 4. Native CSS, no UI-system imitation.
   Shape scale: panels 16px; buttons/inputs 8px. Layer scale: header 20; menu 30; toast 40. */
:root{color-scheme:light dark;--bg:#fcfdff;--surface:#fff;--soft:#f1f5fb;--tint:#eaf1fc;--text:#172238;--muted:#5d6d85;--accent:#245ac6;--accent-hover:#1c489e;--line:#dce4ef;--header:rgba(252,253,255,.96);--shadow:0 18px 60px rgba(47,78,130,.07);font-family:"Segoe UI Variable","Segoe UI","Microsoft YaHei UI","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--text);font-size:15px;line-height:1.75}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:620;line-height:1.35}button{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}a,button{touch-action:manipulation}.container{width:min(1240px,calc(100% - 80px));margin-inline:auto}.skip{position:fixed;top:-80px;left:20px;z-index:40;background:var(--surface);padding:12px 22px}.skip:focus{top:12px}.topbar{position:sticky;top:0;z-index:20;background:var(--header);border-bottom:1px solid var(--line)}.navigation{height:78px;display:flex;align-items:center;gap:48px}.brand{display:inline-flex;align-items:center;gap:10px;white-space:nowrap}.brand img{border-radius:7px;width:30px;height:30px;object-fit:cover}.brand span{font-size:23px;font-weight:750;letter-spacing:-.8px}.desktop-nav{display:flex;align-items:center;gap:30px}.desktop-nav a{font-size:14px;color:var(--muted);white-space:nowrap}.desktop-nav a:hover,.text-link:hover,.footer a:hover{color:var(--accent)}.nav-actions{display:flex;align-items:center;gap:20px;margin-left:auto;white-space:nowrap}.language{font-size:12px;font-weight:650}.theme-button{border:0;background:transparent;padding:0;width:24px;height:32px;font-size:22px;line-height:1}.console-link{font-size:13px}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;min-height:48px;padding:10px 25px;border-radius:8px;background:var(--accent);color:#fff;font-size:14px;font-weight:600;line-height:1.5;border:1px solid transparent;white-space:nowrap;transition:background .18s,transform .18s}.button:hover{background:var(--accent-hover);transform:translateY(-1px);color:#fff}.button.compact{min-height:40px;padding:9px 18px;font-size:13px}.button.secondary{background:var(--surface);color:var(--text);border-color:var(--line)}.button.secondary:hover{color:var(--accent);border-color:var(--accent)}.text-link{display:inline-flex;align-items:center;gap:18px;font-size:14px;font-weight:600}.actions{display:flex;align-items:center;gap:28px;margin-top:30px}.mobile-menu{display:none}.hero{display:grid;grid-template-columns:1.05fr 1fr;align-items:center;min-height:505px;padding-block:57px 59px;gap:28px}.hero-copy{position:relative;z-index:1}.eyebrow{color:var(--accent);font-size:11px;font-weight:650;letter-spacing:1.6px;margin-bottom:20px}.hero h1{font-size:clamp(34px,3.7vw,53px);letter-spacing:-2.2px;line-height:1.37;font-weight:650}.hero h1 span{color:var(--accent)}.hero-description{margin-top:23px;color:var(--muted);font-size:16px;line-height:1.95}.hero-art{margin-right:-12px;border-radius:16px;overflow:hidden;isolation:isolate;background:#eaf0f8}.hero-art img{aspect-ratio:1.5;object-fit:cover;width:100%}.product-index{border-block:1px solid var(--line);background:var(--surface)}.index-grid{display:grid;grid-template-columns:repeat(3,1fr)}.index-grid a{position:relative;display:grid;grid-template-columns:1fr 30px;padding:24px 30px 24px 0;gap:2px 10px;align-items:center}.index-grid a+a{padding-left:34px;border-left:1px solid var(--line)}.index-name{font-size:13px;letter-spacing:.6px;font-weight:700}.index-grid a>span:nth-child(2){color:var(--muted);font-size:12px;grid-column:1}.index-grid b{grid-column:2;grid-row:1/3;font-size:20px;font-weight:400;color:var(--accent)}.index-grid a:hover .index-name{color:var(--accent)}.section{padding-block:76px}.section-heading{margin-bottom:30px}.section-heading h2{font-size:30px;letter-spacing:-.7px}.section-heading p{color:var(--muted);font-size:14px;margin-top:10px}.product-grid{display:grid;grid-template-columns:1.23fr 1fr;grid-template-rows:auto auto;gap:18px}.product-grid article{border-radius:16px;overflow:hidden;border:1px solid var(--line)}.client-feature{grid-row:span 2;background:var(--tint);position:relative;display:grid;grid-template-columns:1.04fr 1fr;align-items:center;min-height:464px}.feature-copy{padding:36px 0 56px 34px}.product-name{display:block;color:var(--accent);font-size:11px;font-weight:700;letter-spacing:1px;margin-bottom:18px}.feature-copy h3{font-size:33px;letter-spacing:-1px;line-height:1.5}.feature-copy p{color:var(--muted);font-size:14px;margin:17px 0 25px;max-width:235px}.feature-copy .button{gap:16px;font-size:13px;padding-inline:17px}.client-identity{margin:18px 22px 58px 16px;display:flex;flex-direction:column;align-items:center;text-align:center}.client-identity img{width:93px;height:93px;border-radius:22px;box-shadow:var(--shadow);margin-bottom:19px}.client-identity strong{font-size:20px;letter-spacing:-.5px}.client-identity ul{list-style:none;padding:0;margin:18px 0 0;color:var(--muted);font-size:12px;line-height:2.8}.feature-bottom{position:absolute;bottom:0;left:0;right:0;border-top:1px solid var(--line);padding:13px 24px;display:flex;justify-content:space-between;font-size:12px;background:var(--surface)}.model-feature,.api-feature{padding:28px 30px;background:var(--surface);display:grid;grid-template-columns:1.25fr 1fr;gap:18px 24px;align-items:center}.model-feature h3,.api-feature h3{font-size:23px;line-height:1.5;letter-spacing:-.6px}.model-feature p,.api-feature p{font-size:12px;line-height:1.9;color:var(--muted);margin-top:12px}.model-feature .product-name,.api-feature .product-name{margin-bottom:10px}.model-feature .text-link,.api-feature .text-link{grid-column:1/-1;justify-content:space-between;font-size:12px}.prompt-example{background:var(--soft);padding:16px;border-radius:8px;min-width:0;border:1px solid var(--line)}.prompt-example span{font-size:10px;color:var(--muted);display:block;margin-bottom:12px}.prompt-example code{font-family:Consolas,"Microsoft YaHei",monospace;font-size:11px;line-height:2.2;overflow-wrap:anywhere}.api-feature{grid-template-columns:1fr;background:linear-gradient(120deg,var(--surface),var(--soft));min-height:213px}.api-feature h3 br{display:none}.api-feature .product-name{margin-bottom:9px}.services-band{background:var(--soft);border-block:1px solid var(--line)}.services-layout{display:grid;grid-template-columns:1.05fr 1fr 1fr;align-items:center;padding-block:31px;gap:30px}.services-intro h2{font-size:22px}.services-intro p{font-size:12px;color:var(--muted);margin-top:7px}.service-entry{display:flex;justify-content:space-between;align-items:center;border-left:1px solid var(--line);padding:4px 0 4px 30px;gap:20px}.service-entry h3{font-size:16px}.service-entry p{font-size:12px;color:var(--muted);margin-top:6px}.service-entry>span{font-size:20px;color:var(--accent)}.service-entry:hover h3{color:var(--accent)}.guides-section{padding-bottom:64px}.guide-list{display:grid;grid-template-columns:1fr 1fr;gap:0 60px}.guide-list a{display:grid;grid-template-columns:1fr 20px;gap:9px;padding:23px 0;border-top:1px solid var(--line)}.guide-list h3{font-size:16px}.guide-list p{font-size:12px;color:var(--muted);grid-column:1}.guide-list span{grid-column:2;grid-row:1/3;align-self:center;color:var(--accent);font-size:20px}.guide-list a:hover h3{color:var(--accent)}.closing{border-top:1px solid var(--line);padding-block:48px 64px;display:grid;grid-template-columns:1fr auto;gap:12px 30px;align-items:center}.closing h2{font-size:28px}.closing p{color:var(--muted);font-size:14px;grid-column:1}.closing .button{grid-row:1/3;grid-column:2}.footer{background:var(--soft);border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:45px;padding-block:48px 40px}.footer-brand p{font-size:12px;color:var(--muted);margin-top:15px;line-height:1.9}.footer h3{font-size:12px;font-weight:650;margin-bottom:17px}.footer-grid>div>a:not(.brand){display:block;font-size:12px;color:var(--muted);margin-block:9px}.footer-bottom{display:flex;align-items:center;gap:24px;border-top:1px solid var(--line);padding-block:20px;color:var(--muted);font-size:10px}.footer-bottom p{flex:1}.preview-label{white-space:nowrap}.breadcrumb{display:flex;gap:14px;align-items:center;font-size:12px;color:var(--muted);padding-top:30px}.detail-hero{padding-block:47px 58px;display:grid;grid-template-columns:1.6fr 1fr;gap:100px;align-items:center;border-bottom:1px solid var(--line)}.detail-hero h1{font-size:39px;line-height:1.5;letter-spacing:-1.1px;max-width:670px}.detail-summary{font-size:15px;color:var(--muted);margin-top:20px;max-width:640px}.detail-relationship{padding:30px;border:1px solid var(--line);border-radius:16px;background:var(--tint)}.detail-relationship>span{font-size:11px;color:var(--muted)}.detail-relationship strong{display:block;font-size:26px;margin-top:14px;overflow-wrap:anywhere}.detail-relationship p{font-size:13px;color:var(--muted);margin-top:18px}.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:110px;padding-block:20px 70px}.article-body{max-width:760px}.article-body section{padding-block:32px}.article-body h2{font-size:23px;margin-bottom:17px}.article-body p{font-size:15px;line-height:2.05;color:var(--muted);overflow-wrap:anywhere}.article-body ul{padding-left:22px;color:var(--muted);line-height:2.4}.article-nav{position:sticky;top:110px;align-self:start;margin-top:31px;border-left:1px solid var(--line);padding-left:23px}.article-nav h2{font-size:12px;margin-bottom:16px}.article-nav a{display:block;color:var(--muted);font-size:12px;margin-block:12px}.article-nav .aside-action{color:var(--accent);margin-top:28px}.faq details{border-top:1px solid var(--line);padding:18px 0}.faq summary{font-size:14px;font-weight:600}.faq details p{font-size:13px;margin-top:15px}.docs-head{padding-block:70px 38px}.docs-head h1{font-size:43px;letter-spacing:-1.4px}.docs-head>p:not(.eyebrow){color:var(--muted);margin-top:18px}.docs-head form{margin-top:32px;max-width:610px}.docs-head label{display:block;font-size:12px;margin-bottom:9px}.docs-head form>div{display:flex;gap:12px}.docs-head input{min-width:0;flex:1;border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:11px 16px;color:var(--text)}.docs-head input::placeholder{color:var(--muted)}.docs-results{padding-bottom:100px}.docs-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.guide-card{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:30px}.guide-card h2{font-size:20px}.guide-card p{font-size:14px;color:var(--muted);margin:15px 0 30px}.guide-card>span{font-size:12px;color:var(--accent)}.guide-card:hover{border-color:var(--accent)}.search-result-label{margin-bottom:22px;color:var(--muted);font-size:13px}.search-result-label a{color:var(--accent);margin-left:20px}.empty-state{padding:35px;border:1px solid var(--line);border-radius:16px;grid-column:1/-1}.empty-state h2{font-size:22px}.empty-state p{color:var(--muted);margin:15px 0 22px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:40;background:var(--text);color:var(--bg);border-radius:8px;padding:10px 18px;display:none;font-size:12px}.toast.visible{display:block}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#111925;--surface:#172132;--soft:#1b273a;--tint:#1e304d;--text:#e9effa;--muted:#a6b4cb;--accent:#9bbcff;--accent-hover:#bed2ff;--line:#344258;--header:rgba(17,25,37,.96)}:root:not([data-theme="light"]) .button:not(.secondary){color:#11213f}:root:not([data-theme="light"]) .hero-art img{filter:brightness(.78)}}
:root[data-theme="dark"]{--bg:#111925;--surface:#172132;--soft:#1b273a;--tint:#1e304d;--text:#e9effa;--muted:#a6b4cb;--accent:#9bbcff;--accent-hover:#bed2ff;--line:#344258;--header:rgba(17,25,37,.96)}:root[data-theme="dark"] .button:not(.secondary){color:#11213f}:root[data-theme="dark"] .hero-art img{filter:brightness(.78)}
@media(min-width:1600px){.hero{min-height:560px}.hero h1{font-size:54px}}
@media(max-width:1150px){.container{width:calc(100% - 56px)}.navigation{gap:28px}.desktop-nav{gap:20px}.nav-actions{gap:13px}.hero h1{font-size:40px;letter-spacing:-1.4px}.hero{min-height:465px}.hero-description{font-size:14px}.client-feature{grid-template-columns:1fr}.feature-copy{padding:28px 30px 10px}.feature-copy h3 br{display:none}.feature-copy h3{font-size:28px}.feature-copy p{max-width:100%;font-size:13px}.client-identity{margin:15px 30px 70px;display:grid;grid-template-columns:48px 1fr;gap:0 18px;text-align:left;justify-content:start}.client-identity img{width:48px;height:48px;border-radius:12px;grid-row:1/3;margin:0}.client-identity strong{font-size:16px}.client-identity ul{grid-column:2;display:flex;gap:8px;margin:0;font-size:10px;flex-wrap:wrap;line-height:1.8}.model-feature{grid-template-columns:1fr}.prompt-example{display:none}.detail-hero{gap:40px}.detail-layout{gap:60px}.detail-hero h1{font-size:34px}}
@media(max-width:850px){.desktop-nav{display:none}.navigation{height:70px}.mobile-menu{display:block;position:relative}.mobile-menu summary{font-size:12px;list-style:none;min-height:40px;display:flex;align-items:center}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{position:absolute;right:0;top:50px;background:var(--surface);padding:12px 20px;border:1px solid var(--line);border-radius:12px;min-width:180px;box-shadow:var(--shadow);z-index:30}.mobile-menu nav a{display:block;padding:10px 0;font-size:13px}.console-link{display:none}.hero{gap:22px;min-height:430px;padding-block:40px}.hero h1{font-size:34px}.hero-description{font-size:13px}.hero .actions{gap:20px}.hero .button{padding-inline:18px}.hero .text-link{font-size:12px;gap:8px}.index-grid a{padding-block:18px}.index-grid a+a{padding-left:20px}.index-grid a>span:nth-child(2){font-size:10px}.services-layout{gap:20px}.services-intro h2{font-size:19px}.services-intro p,.service-entry p{font-size:11px}.service-entry{padding-left:20px}.footer-grid{gap:25px}.detail-hero{grid-template-columns:1fr}.detail-relationship{display:none}.detail-layout{grid-template-columns:1fr}.article-nav{display:none}}
@media(max-width:640px){.container{width:calc(100% - 36px)}.navigation{gap:16px;height:66px}.brand{gap:7px}.brand span{font-size:20px}.brand img{width:26px;height:26px}.nav-actions{gap:13px}.nav-actions .button{padding:8px 11px;min-height:36px;font-size:11px}.theme-button{font-size:20px;width:20px}.language{font-size:11px}.hero{grid-template-columns:1fr;gap:25px;padding-block:39px 27px;min-height:0}.eyebrow{font-size:9px;letter-spacing:1.2px;margin-bottom:18px}.hero h1{font-size:35px;letter-spacing:-1.4px;line-height:1.45}.hero-description{font-size:14px;margin-top:19px}.hero .actions{margin-top:24px;gap:28px}.hero-art{margin:0}.hero-art img{aspect-ratio:1.8;object-position:center 48%}.product-index .container{width:100%}.index-grid{grid-template-columns:1fr}.index-grid a{margin-inline:18px;padding:14px 0!important;grid-template-columns:110px 1fr 20px;gap:9px;border:0!important}.index-grid a+a{border-top:1px solid var(--line)!important}.index-name{font-size:11px}.index-grid a>span:nth-child(2){grid-column:2;font-size:11px}.index-grid b{grid-column:3;grid-row:1;font-size:18px}.section{padding-block:46px}.section-heading h2{font-size:25px}.section-heading p{font-size:12px;line-height:1.9;margin-top:12px}.product-grid{grid-template-columns:1fr;gap:16px}.client-feature{min-height:370px;grid-row:auto}.feature-copy{padding:28px 27px 8px}.feature-copy h3{font-size:29px}.feature-copy p{font-size:13px;max-width:290px}.client-identity{margin-left:27px}.model-feature,.api-feature{padding:25px 27px;gap:25px}.model-feature h3,.api-feature h3{font-size:24px}.model-feature h3 br{display:none}.model-feature p,.api-feature p{font-size:13px}.services-layout{grid-template-columns:1fr;padding-block:27px;gap:0}.services-intro{margin-bottom:19px}.services-intro h2{font-size:23px}.services-intro p{font-size:12px}.service-entry{border-left:0;border-top:1px solid var(--line);padding:22px 0}.service-entry:last-child{padding-bottom:5px}.service-entry h3{font-size:17px}.service-entry p{font-size:12px}.guide-list{grid-template-columns:1fr}.guide-list a{padding-block:21px}.guide-list p{font-size:12px}.closing{grid-template-columns:1fr;gap:16px;padding-block:35px 44px}.closing h2{font-size:24px}.closing p{font-size:13px}.closing .button{grid-column:1;grid-row:auto;justify-self:start;margin-top:8px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px 20px;padding-block:35px}.footer-brand{grid-column:1/-1}.footer-brand p br{display:none}.footer-grid>div:last-child{grid-column:1/-1}.footer-grid>div:last-child>a:not(.brand){display:inline-block;margin-right:20px}.footer-bottom{flex-wrap:wrap;gap:12px;padding-block:21px}.footer-bottom p{flex-basis:100%;font-size:10px;order:3}.preview-label{margin-left:auto}.breadcrumb{padding-top:23px;font-size:11px;gap:10px}.detail-hero{padding-block:33px 38px}.detail-hero h1{font-size:31px;letter-spacing:-1px}.detail-summary{font-size:14px;margin-top:19px}.detail-hero .actions{align-items:start;flex-direction:column;gap:20px}.detail-layout{padding-top:8px;padding-bottom:40px}.article-body section{padding-block:24px}.article-body h2{font-size:21px}.article-body p{font-size:14px}.article-body ul{font-size:13px}.docs-head{padding-block:44px 30px}.docs-head h1{font-size:32px;letter-spacing:-1px}.docs-head>p:not(.eyebrow){font-size:13px}.docs-head form{margin-top:25px}.docs-head form>div{gap:9px}.docs-head .button{padding-inline:17px}.docs-head input{font-size:12px;padding-inline:12px}.docs-grid{grid-template-columns:1fr;gap:16px}.guide-card{padding:25px}.guide-card h2{font-size:19px}.guide-card p{font-size:13px}.docs-results{padding-bottom:55px}}
.brand img,.client-identity img{background:#fff;padding:2px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}