@font-face{font-family:Inter;src:url('assets/inter.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}:root{font-family:Inter,Arial,sans-serif;color:#17243d;background:#f7f9fc;font-synthesis:none;font-size:16px;--blue:#0759ed;--muted:#5b677c;--line:#dfe5ee}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid #f59e0b;outline-offset:5px}a,button{-webkit-tap-highlight-color:transparent}a:hover{color:var(--blue)}.container{max-width:1248px;margin:auto;padding-inline:40px}header{border-bottom:1px solid var(--line);background:#f7f9fcf5;position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:0}.brand img{width:119px;height:46px;object-fit:cover;object-position:left}.brand>span{font-size:12px;letter-spacing:.15em;font-weight:650;margin-left:-18px;margin-top:7px}nav{display:flex;gap:32px;font-size:14px;font-weight:550}.nav-cta{font-size:14px;font-weight:600;border:1px solid #cdd6e4;padding:12px 17px;border-radius:6px}.nav-cta span{margin-left:20px}.hero{padding-top:66px}.eyebrow{font-size:12px;font-weight:650;letter-spacing:.13em;display:flex;align-items:center;gap:10px;line-height:1.7}.small-cross{font-size:20px;color:var(--blue)}.hero-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center;margin-top:25px}h1{font-size:clamp(48px,5.5vw,76px);font-weight:600;letter-spacing:-.065em;line-height:1.13;margin:0}h1>span{color:var(--blue)}.hero-copy>p{max-width:440px;font-size:17px;line-height:1.85;color:var(--muted);margin:25px 0 27px}.hero-actions{display:flex;align-items:center;gap:25px}.button{display:inline-flex;justify-content:center;align-items:center;gap:28px;border-radius:6px;padding:15px 20px;font-size:14px;line-height:1.4;font-weight:600;transition:background .2s,transform .2s}.button:hover{transform:translateY(-2px)}.primary{background:var(--blue);color:#fff}.primary:hover{background:#0647c1;color:white}.black{background:#17243d;color:#fff}.black:hover{background:#2c405f;color:white}.text-link{font-size:14px;font-weight:550}.text-link span{margin-left:10px}.hero-note{display:flex;flex-direction:column;gap:5px;margin-top:36px;font-size:12px;color:#6e788a}.flow-art{height:440px;position:relative;display:flex;align-items:center;flex-direction:column;overflow:hidden;background:radial-gradient(ellipse at center,#e4eeff 0%,#f7f9fc00 67%)}.diagram-grid{position:absolute;inset:0;background-image:radial-gradient(#b4c5e6 1px,transparent 1px);background-size:20px 20px;mask-image:radial-gradient(ellipse,#0009,transparent 72%)}.orbit{position:absolute;border:1px solid #d6e1f377;border-radius:50%;width:350px;height:350px;top:20px}.orbit-two{width:445px;height:445px;top:-28px}.flow-top{margin-top:25px;background:#fff;border:1px solid #dfe5ef;padding:12px 21px;border-radius:30px;z-index:1;font-size:14px;box-shadow:0 5px 15px #18295005}.mini-icon{color:var(--blue);font-size:20px;margin-right:8px}.flow-line{width:1px;height:38px;background:#a9bfe7;z-index:1}.core{width:164px;height:114px;background:#fff;border:1px solid #bdcfee;border-radius:18px;box-shadow:0 10px 45px #1456c91a,inset 0 0 0 5px #f7faff;z-index:1;display:flex;align-items:center;justify-content:center;flex-direction:column}.core img{width:148px;object-fit:contain;margin-left:24px}.core>span{font-size:10px;letter-spacing:.17em;color:#627695;margin-top:-5px}.branch{height:37px;width:50%;border-top:1px solid #a9bfe7;border-left:1px solid #a9bfe7;border-right:1px solid #a9bfe7;margin-top:25px;border-radius:10px 10px 0 0;position:relative}.branch:before{content:'';position:absolute;left:50%;width:1px;height:26px;top:-26px;background:#a9bfe7}.flow-products{display:flex;justify-content:space-around;width:100%;z-index:1;gap:16px;padding:0 17px}.flow-node{display:grid;grid-template-columns:35px 1fr;gap:5px 10px;background:white;border:1px solid #dae3f1;border-radius:10px;padding:17px 14px;flex:1;box-shadow:0 7px 20px #12357107}.flow-node .product-symbol{grid-row:span 2;width:34px;height:34px;font-size:25px;align-self:center}.flow-node strong{font-size:14px;font-weight:650}.flow-node>span:last-child{font-size:12px;color:var(--muted)}.diagram-caption{margin-top:35px;display:flex;align-items:center;gap:13px;font-size:9px;letter-spacing:.13em;color:#7284a0;z-index:1}.diagram-caption i{height:1px;width:26px;background:#c2cfe4}.intro-strip{display:flex;align-items:center;gap:32px;margin-top:61px;padding:27px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.intro-strip>span{font-size:11px;letter-spacing:.1em;white-space:nowrap;color:#6b778d}.intro-strip p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}.intro-strip strong{font-weight:500;color:#243650}.intro-strip>a{margin-left:auto;font-size:23px}.products,.approach{padding-top:88px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:35px}.section-heading .eyebrow{color:#60728d;margin-bottom:16px}h2{font-size:40px;line-height:1.22;letter-spacing:-.045em;font-weight:550;margin:0}.section-heading>p{color:var(--muted);font-size:15px;line-height:1.8;margin:0 0 3px}.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.product-card{background:#fff;border:1px solid #dbe3f0;border-radius:14px;padding:32px;position:relative;overflow:hidden}.studio{background:linear-gradient(130deg,#edf4ff,#fff 75%)}.forge{background:linear-gradient(130deg,#eef0f6,#fff 75%)}.card-top{display:flex;align-items:center;gap:12px}.product-symbol{display:inline-flex;justify-content:center;align-items:center;width:43px;height:43px;border-radius:11px;font-size:30px}.blue{color:#0858e7;background:#ddeaff}.dark{color:#253a5c;background:#e0e5ef}.product-kind{font-size:10px;font-weight:600;letter-spacing:.08em;color:#526583}.number{margin-left:auto;color:#8998ae;font-size:13px}h3{font-size:29px;letter-spacing:-.04em;font-weight:600;margin:29px 0 9px}.tagline{font-size:15px;color:#466083;margin:0}.product-description{font-size:15px;color:var(--muted);line-height:1.9;margin:23px 0}.feature-list{display:grid;gap:15px;font-size:14px;margin-bottom:33px}.feature-list span{color:#6a82aa;margin-right:10px}.card-bottom{border-top:1px solid #dfe5ee;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:23px}.card-bottom>span{font-size:12px;color:var(--muted);max-width:120px;line-height:1.6}.card-bottom .button{gap:18px;padding:13px 15px}.approach{padding-bottom:80px}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.principles article{border-top:1px solid var(--line);padding-top:24px}.principle-number{color:var(--blue);font-size:13px}.principles h3{font-size:19px;margin:24px 0 12px;letter-spacing:-.025em}.principles p{font-size:14px;line-height:1.85;color:var(--muted);margin:0;max-width:315px}.blog-panel{background:#142745;color:#fff;border-radius:14px;padding:47px;display:grid;grid-template-columns:1.15fr 1fr;gap:70px}.blog-panel .eyebrow{color:#a6bfeb;font-size:10px;margin-bottom:20px}.blog-panel h2{font-size:40px}.blog-panel p{font-size:15px;line-height:1.85;color:#bfcbe0;max-width:390px;margin:20px 0 26px}.white{background:#fff;color:#17243d}.white:hover{background:#e1ebff}.blog-index{display:flex;flex-direction:column;justify-content:center}.blog-index a{display:flex;align-items:center;justify-content:space-between;padding:23px 0;border-bottom:1px solid #ffffff26;font-size:19px;letter-spacing:-.02em}.blog-index a:hover{color:#98c4ff}.blog-index span{font-size:12px;color:#a6bfeb}footer{display:flex;align-items:center;gap:40px;padding-top:44px!important;padding-bottom:34px!important}.footer-brand>span{font-size:12px;color:var(--muted)}.footer-links{display:flex;gap:23px;font-size:12px;margin-left:auto}.copyright{font-size:11px;color:var(--muted)}.skip{position:fixed;left:15px;top:-100px;padding:15px;background:white;z-index:100}.skip:focus{top:12px}@media(min-width:1500px){.hero{padding-top:80px}.hero-layout{gap:65px}}@media(max-width:1000px){.container{padding-inline:28px}.hero-layout{gap:10px}.flow-node{padding:13px 9px;gap:5px}.flow-products{padding:0}.flow-node>span:last-child{font-size:11px}.card-bottom{align-items:flex-start;flex-direction:column}.card-bottom>span{max-width:none}.blog-panel{gap:35px;padding:35px}footer{gap:20px}.copyright{display:none}.hero-actions{gap:16px}.button{gap:15px}}@media(max-width:720px){.container{padding-inline:22px}.header-inner{height:75px}.brand img{width:108px}.brand>span{margin-left:-27px;font-size:10px}nav{gap:18px;font-size:13px}.header-inner nav a:nth-child(2){display:none}.nav-cta{display:none}.hero{padding-top:38px}.hero .eyebrow{font-size:10px}.hero-layout{grid-template-columns:1fr;margin-top:25px}h1{font-size:58px;letter-spacing:-.06em}.hero-copy>p{font-size:16px;max-width:470px}.hero-note{margin-top:25px}.flow-art{height:397px;max-width:460px;width:100%;margin:17px auto 0}.flow-top{margin-top:12px}.diagram-caption{margin-top:27px}.intro-strip{margin-top:10px;gap:14px;flex-wrap:wrap;padding:23px 0}.intro-strip>span{width:100%;font-size:10px}.intro-strip p{max-width:88%;font-size:13px}.intro-strip>a{align-self:center}.products,.approach{padding-top:55px}.section-heading{display:block;margin-bottom:25px}h2{font-size:33px}.section-heading>p{font-size:14px;margin-top:18px}.section-heading>p br{display:none}.product-grid{grid-template-columns:1fr;gap:18px}.product-card{padding:26px}.card-bottom{flex-direction:row;align-items:center}.card-bottom>span{max-width:125px}.product-kind{font-size:9px}.principles{grid-template-columns:1fr;gap:26px}.principles article{padding-top:17px}.principles h3{margin-top:15px}.principles p{max-width:none}.approach{padding-bottom:52px}.blog-panel{grid-template-columns:1fr;padding:28px;gap:20px}.blog-panel h2{font-size:34px}.blog-index a{font-size:17px;padding:19px 0}footer{align-items:flex-start;flex-direction:column;padding-top:30px!important;gap:25px}.footer-links{margin:0;font-size:13px;gap:28px}.copyright{display:block}.hero-actions{flex-wrap:wrap;gap:20px}.flow-node>span:last-child{font-size:11px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}.button:hover{transform:none}}
/* The locale is encoded in the URL; English is always the root page. */
.language-switch{display:flex;align-items:center;gap:3px;padding:3px;border:1px solid var(--line);border-radius:7px;flex-shrink:0}.language-switch a{display:flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;font-size:12px;font-weight:650;border-radius:4px}.language-switch a[aria-current=page]{background:var(--blue);color:white}.header-inner{gap:20px}.header-inner nav{margin-left:auto}.card-bottom .button{flex-shrink:0}html[lang=en] .hero-actions{flex-wrap:wrap}@media(max-width:1000px){.header-inner nav{gap:20px}.nav-cta{display:none}}@media(max-width:720px){.header-inner{gap:10px}.header-inner nav{gap:12px}.language-switch a{min-width:31px;min-height:38px}.card-bottom{flex-wrap:wrap}.card-bottom>span{max-width:none}h1{font-size:clamp(44px,12vw,58px)}.flow-node{min-width:0}}@media(max-width:380px){.header-inner nav>a:last-child{display:none}}
/* AI Studio product and documentation surfaces. */
.product-grid{grid-template-columns:1fr}.product-card.studio{max-width:none}.product-card .product-description{max-width:760px}.flow-products{max-width:270px}.branch{width:1px;border:0;background:#a9bfe7;border-radius:0}.flow-node{flex:1}.product-hero{padding-top:70px;padding-bottom:55px}.product-hero h1{margin-top:22px;font-size:clamp(40px,5.5vw,70px)}.lead{font-size:18px;line-height:1.85;color:var(--muted);max-width:720px;margin:25px 0 30px}.product-features{padding-bottom:70px}.studio-next{align-items:center}.docs-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:55px;padding-top:48px;padding-bottom:70px}.docs-layout aside{align-self:start;position:sticky;top:120px}.docs-layout aside nav{display:flex;flex-direction:column;gap:6px;margin-top:22px}.docs-layout aside nav a{padding:11px 14px;border-radius:6px;font-size:14px;line-height:1.6}.docs-layout aside nav a[aria-current=page]{background:#e2edff;color:var(--blue);font-weight:650}.doc-content{min-width:0;max-width:780px}.doc-content h1{font-size:clamp(32px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin-top:26px}.doc-content section{margin-top:40px}.doc-content h2{font-size:25px;line-height:1.4;letter-spacing:-.025em}.doc-content p,.doc-content li{font-size:16px;line-height:1.9;color:var(--muted)}.doc-content ol{padding-left:24px}.doc-content li{padding-left:8px;margin:15px 0}.doc-content>.button{margin-top:35px}.doc-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.doc-cards>a{background:white;border:1px solid var(--line);border-radius:12px;padding:24px}.doc-cards>a:hover{border-color:var(--blue)}.doc-cards h2{font-size:21px}.doc-cards span{font-size:14px;font-weight:600;color:var(--blue)}@media(max-width:850px){.docs-layout{grid-template-columns:1fr;gap:32px}.docs-layout aside{position:static}.docs-layout aside nav{flex-direction:row;flex-wrap:wrap;gap:4px}.docs-layout aside nav a{font-size:13px;padding:9px 11px}.doc-content{max-width:none}}@media(max-width:600px){.doc-cards{grid-template-columns:1fr}.docs-layout{padding-top:30px}.product-hero{padding-top:40px}.product-hero h1{font-size:43px}.lead{font-size:16px}.product-features{padding-bottom:45px}.studio-next{gap:15px}.docs-layout aside nav a:nth-child(2){display:block}}

/* Illustrated manual: readable steps with full-resolution, locally hosted screenshots. */
.guide-figure{margin:24px 0 32px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}.guide-figure a{display:block;cursor:zoom-in}.guide-figure img{display:block;width:100%;height:auto}.guide-figure figcaption{border-top:1px solid var(--line);padding:15px 18px;font-size:13px;line-height:1.7;color:var(--muted);background:#f8fafc}.article-toc{display:flex;flex-wrap:wrap;gap:8px 16px;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fff}.article-toc strong{flex-basis:100%;font-size:14px}.article-toc a{font-size:13px;color:var(--blue);text-decoration:underline;text-underline-offset:4px}.doc-content section{scroll-margin-top:110px}.docs-layout aside{max-height:calc(100vh - 145px);overflow:auto}.doc-content .guide-figure a:focus-visible{outline:3px solid var(--blue);outline-offset:-3px}@media(max-width:850px){.docs-layout aside{max-height:none;overflow:visible}.docs-layout aside nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.docs-layout aside nav a{overflow-wrap:anywhere}}@media(max-width:400px){.docs-layout aside nav{grid-template-columns:minmax(0,1fr)}}

.mobile-doc-nav{display:none}.mobile-doc-nav summary{cursor:pointer;font-weight:650;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:#fff}.mobile-doc-nav summary:focus-visible{outline:3px solid var(--blue);outline-offset:3px}@media(max-width:850px){.desktop-doc-nav{display:none}.mobile-doc-nav{display:block}}

/* Personal introduction shared by the English and Vietnamese homepages. */
.about{padding-top:80px}.about-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.8fr);gap:64px;padding:44px;border:1px solid var(--line);border-radius:14px;background:#fff}.about-intro .eyebrow{color:var(--muted)}.about-monogram{display:flex;align-items:center;justify-content:center;width:96px;height:96px;margin-top:30px;border:1px solid #bdcfee;border-radius:24px;background:#edf4ff;color:var(--blue);font-size:46px;font-weight:600;letter-spacing:-.06em}.about-name{font-size:22px;font-weight:600;margin:18px 0 0}.about-name span{display:block;margin-top:7px;font-size:13px;font-weight:400;color:var(--muted)}.about-copy p{font-size:16px;line-height:1.85;color:var(--muted);margin:20px 0}.about-topics{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.about-topics span{padding:8px 12px;border-radius:6px;background:#f1f5fb;color:#466083;font-size:12px}.about-copy .text-link{display:inline-block;color:var(--blue);line-height:1.7}@media(max-width:720px){.about{padding-top:52px}.about-panel{grid-template-columns:1fr;gap:30px;padding:26px}.about-monogram{width:72px;height:72px;font-size:36px;margin-top:22px}.about-copy p{font-size:15px}.about-name{font-size:20px}}

.social-links{display:flex;flex-wrap:wrap;gap:12px 20px;font-size:13px;line-height:1.6}.social-links a{color:#42618b;min-height:32px;display:inline-flex;align-items:center;gap:4px}.social-links a:hover{color:var(--blue)}.social-links a:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.footer-navigation{display:flex;flex-direction:column;gap:12px}.footer-navigation .footer-links{flex-wrap:wrap}.x-about-copy>.social-links{margin-top:24px}footer{flex-wrap:wrap}

.language-switch select{font:inherit;font-size:12px;font-weight:600;color:var(--ink,#172b4c);background:transparent;border:0;border-radius:4px;min-height:38px;max-width:120px;padding:0 6px;cursor:pointer}.language-switch select:focus-visible{outline:2px solid var(--blue);outline-offset:2px}.language-switch noscript{display:flex;gap:8px}@media(max-width:380px){.language-switch select{max-width:105px}.header-inner{gap:6px}}

/* Compact language control, with a native-select fallback. */
.language-switch{position:relative;gap:0;padding:0;border:1px solid #dce4ef;border-radius:11px;background:#ffffffd9;box-shadow:0 2px 5px #18314b04;transition:border-color .15s,box-shadow .15s}
.language-switch:hover{border-color:#a8bee0;box-shadow:0 3px 10px #18314b09}
.language-globe{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:#47709f;pointer-events:none;z-index:1}
.language-switch select{appearance:none;min-height:42px;max-width:none;width:142px;padding:0 32px 0 38px;font-size:13px;font-weight:500;letter-spacing:0;color:#233953;outline-offset:3px;background:transparent;cursor:pointer}
.language-switch:after{content:'';position:absolute;right:13px;top:17px;width:6px;height:6px;border-right:1.5px solid #6a7f98;border-bottom:1.5px solid #6a7f98;transform:rotate(45deg);pointer-events:none}
@supports (appearance:base-select){
.language-switch select,.language-switch select::picker(select){appearance:base-select}
.language-switch select{display:flex;align-items:center;border:0;border-radius:10px}
.language-switch select::picker-icon{display:none}
.language-switch select::picker(select){margin-top:8px;padding:6px;min-width:186px;border:1px solid #dce4ef;border-radius:13px;background:#fff;box-shadow:0 12px 36px #18314b1c;color:#233953}
.language-switch option{display:flex;align-items:center;gap:10px;min-height:42px;padding:10px 12px;border-radius:8px;font-family:inherit;font-size:13px;font-weight:500;cursor:pointer}
.language-switch option:checked{background:#edf4ff;color:#0759ed}
.language-switch option:hover{background:#f3f6fb}
.language-switch option::checkmark{color:#0759ed}
}
@media(max-width:420px){.language-switch select{width:124px;padding-left:32px;padding-right:24px;font-size:12px}.language-globe{left:10px;width:15px;height:15px}.language-switch:after{right:10px}}
@media(max-width:380px){.header-inner .brand{width:88px;flex-shrink:0}.header-inner .brand img{width:88px}.header-inner nav>a{white-space:nowrap}.header-inner nav{gap:6px}}
.language-switch:has(noscript a) .language-globe,.language-switch:has(noscript a):after{display:none}.language-switch noscript:has(a){flex-direction:column;gap:0;padding:3px 8px}.language-switch noscript a{min-height:24px;white-space:nowrap;font-size:11px}
@media(min-width:381px) and (max-width:420px){.header-inner nav>a{white-space:nowrap}.header-inner nav>a:last-child{display:none}}