:root{--ink:#17233c;--muted:#5e687b;--blue:#2949d5;--border:#dfe5ef;--bg:#f7f9fc;--lime:#ceee94}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #516fe4;outline-offset:5px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.12;letter-spacing:-.04em}h1{font-size:clamp(2.6rem,4.5vw,4.4rem);font-weight:650;margin-bottom:24px}h2{font-size:clamp(1.8rem,2.8vw,2.5rem);font-weight:630;margin-bottom:24px}h3{font-size:1.3rem;font-weight:650;letter-spacing:-.025em}p{color:var(--muted);margin-bottom:20px}.wrap{max-width:1216px;margin:auto;padding-left:32px;padding-right:32px}.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.13em;color:var(--muted);display:block;margin-bottom:16px}.skip{position:fixed;left:12px;top:-100px;background:white;z-index:20;padding:12px}.skip:focus{top:12px}header{height:89px;border-bottom:1px solid var(--border);background:#f7f9fcf2;position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}.nav-wrap{max-width:1216px;margin:auto;padding:0 32px;height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:1.45rem;font-weight:720;letter-spacing:-.06em}.brand-icon{background:var(--blue);color:white;border-radius:11px;line-height:34px;height:36px;width:36px;display:inline-block;text-align:center;font-size:1.65rem;position:relative;letter-spacing:-.07em}.brand-icon>span{color:var(--lime);position:absolute;right:4px;top:-10px;font-size:1.8rem}header nav{display:flex;gap:32px}header nav a{font-size:.9rem;color:#536077;font-weight:550}header nav a[aria-current],header nav a:hover{color:var(--blue)}.nav-cta{background:#e9edf6;border:1px solid var(--border);border-radius:8px;padding:9px 16px;font-size:.875rem;font-weight:600}.nav-cta span{margin-left:20px}.hero{padding-top:86px;padding-bottom:80px;display:grid;grid-template-columns:1.14fr 1fr;align-items:center;gap:40px}.pill{display:inline-flex;background:#eaf0e2;color:#536638;border:1px solid #dfe8d1;border-radius:30px;padding:6px 12px;font-size:.7rem;letter-spacing:.08em;font-weight:700;margin-bottom:25px}.hero h1{font-size:clamp(2.5rem,4vw,3.5rem);line-height:1.12;white-space:nowrap}.hero h1 span{color:var(--blue)}.hero p{font-size:1.1rem;line-height:1.75}.actions{display:flex;gap:25px;align-items:center;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;gap:27px;background:var(--blue);color:white;padding:13px 21px;border-radius:8px;border:1px solid transparent;font-size:.9rem;font-weight:650;min-height:48px;transition:background .18s,transform .18s}.button:hover{background:#1f39ae;transform:translateY(-1px)}.quiet-link{font-size:.9rem;font-weight:600}.quiet-link:hover{color:var(--blue)}.hero-notes{display:flex;flex-wrap:wrap;gap:17px;margin-top:35px;color:#646f81;font-size:.75rem}.hero-visual{padding:12px 0 0 6px}.demo{margin:0;padding:25px 23px 12px;background:linear-gradient(130deg,#edf0fc,#e4eaf8 55%,#e8edf8);border-radius:23px;border:1px solid #dce3f5;transform:rotate(-2deg);position:relative}.window{background:#fbfcff;border:1px solid #fff;border-radius:12px;box-shadow:0 15px 35px #26366216;overflow:hidden}.window-bar{font-size:.72rem;padding:14px 16px;display:flex;gap:9px;align-items:center;background:#f5f7fc}.window-controls{margin-left:auto;color:#8390a8}.folder-icon{color:#bd983d;font-size:1rem}.address{border:1px solid #e5e9f1;border-radius:5px;margin:0 13px;padding:7px 12px;font-size:.7rem;color:#6a768c}.address span{margin:0 8px;color:#a0a9ba}.window-content{position:relative;height:218px;padding:30px 20px;display:flex;align-items:flex-start}.selected-file{padding:10px 8px;background:#e4ebff;border:1px solid #c6d3ff;border-radius:6px;display:flex;flex-direction:column;align-items:center;gap:9px;font-size:.67rem;min-width:97px}.file-sheet{width:47px;height:57px;background:white;border-radius:4px;box-shadow:0 3px 8px #00174615;display:flex;align-items:center;justify-content:center;font-size:.65rem;font-weight:750;color:#3654bf;border-top:7px solid #8ca8ed}.file-sheet.purple{border-top-color:#b2a1db;color:#7c5cb5}.context{position:absolute;left:107px;right:14px;top:58px;background:#fefefff5;border:1px solid #dbe1ed;border-radius:9px;box-shadow:0 8px 22px #172b4a20;padding:6px;font-size:.7rem;color:#4b576c;backdrop-filter:blur(8px)}.context>span{display:flex;align-items:center;padding:5px 10px;gap:7px}.context b{margin-left:auto;font-weight:400}.context .context-active{background:#e7edff;border-radius:4px;color:#2949c3;font-weight:600}.context .context-rule{border-top:1px solid #ecedf4;padding:0;margin:4px 2px}.window-foot{font-size:.65rem;color:#6d7991;padding:10px 14px;border-top:1px solid #e8ecf4}.window-foot span{margin:0 8px}.demo figcaption{font-size:.65rem;color:#687592;text-align:center;padding-top:9px}.visual-label{font-size:.85rem;font-weight:500;text-align:right;padding:22px 12px 0;color:#677798}.visual-label>span{font-size:1.6rem;margin-right:12px;color:#6c82c1}.trust-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:#f0f3f8}.trust-strip .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:19px;padding-bottom:19px;font-size:.8rem;color:#647187}.trust-strip span:first-child{font-weight:600;color:#34425b}.section{padding-top:67px;padding-bottom:65px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}.section-heading .eyebrow{margin-bottom:12px}.section-heading h2{margin-bottom:0}.section-heading>a{padding-bottom:5px}.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.tool-card{display:block;padding:28px 30px;background:white;border:1px solid var(--border);border-radius:13px;transition:border-color .18s,box-shadow .18s}.tool-card:hover{border-color:#9eafea;box-shadow:0 10px 30px #283f7610}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}.file-icon{height:51px;width:46px;border-radius:10px;background:#edf2ff;color:#3d5bbd;display:grid;place-items:center;font-size:.75rem;font-weight:750;letter-spacing:.03em;border:1px solid #dce5fc}.purple .file-icon{background:#f1edfc;color:#8763b2;border-color:#e6dff3}.category{font-size:.7rem;color:#627084;background:#f3f5f9;border:1px solid #e7ebf3;padding:4px 9px;border-radius:5px}.tool-card h3{font-size:1.55rem;margin-bottom:11px}.tool-card p{font-size:.94rem;max-width:380px;margin-bottom:17px}.card-features{color:#6c798e;font-size:.75rem;margin-bottom:22px}.card-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:19px;border-top:1px solid #e9edf3;gap:12px}.status{font-size:.7rem;color:#647183;display:inline-block;background:#f2f4f8;border-radius:4px;padding:4px 7px}.text-link{font-size:.8rem;font-weight:650}.text-link>span{margin-left:13px}.section-note{font-size:.8rem;margin:21px 0 0;color:#738096}.principles{border-top:1px solid var(--border);padding-top:65px;padding-bottom:72px;display:grid;grid-template-columns:1fr 1.1fr;gap:90px}.principles h2{font-size:2.8rem;line-height:1.12}.principles h2 span{color:#768398}.principle-list article{display:flex;gap:23px;padding:22px 0;border-bottom:1px solid var(--border)}.principle-list article:first-child{padding-top:0}.principle-list article>span{font-size:.75rem;color:#8592ac;line-height:1.8}.principle-list h3{font-size:1.2rem;margin-bottom:10px}.principle-list p{font-size:.9rem;margin:0}.guide-banner{background:#172742;border-radius:14px;color:white;padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:80px}.guide-banner .eyebrow{color:#b9d28a}.guide-banner h2{font-size:1.75rem;margin-bottom:10px}.guide-banner p{color:#b8c4d6;font-size:.9rem;margin:0}.button.light{color:var(--ink);background:var(--lime);flex-shrink:0}footer{border-top:1px solid var(--border);max-width:1216px;margin:auto;padding:44px 32px 0}.footer-main{display:grid;grid-template-columns:1.25fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}.footer-main .brand{font-size:1.25rem}.footer-main .brand-icon{transform:scale(.85);transform-origin:left center;margin-right:-6px}.footer-main p{font-size:.85rem;margin-top:13px}.footer-main h3{font-size:.8rem;letter-spacing:0;margin:8px 0 18px}.footer-main>div>a:not(.brand){display:block;color:#647086;font-size:.8rem;margin:8px 0}.footer-note{padding-top:8px}.footer-note .eyebrow{font-size:.65rem}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--border);font-size:.7rem;color:#7d889c;padding:18px 0 22px}.page-intro{padding-top:68px;padding-bottom:38px}.page-intro p{font-size:1.1rem}.catalog{padding-bottom:100px;min-height:600px}.catalog-controls{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:22px}.search{display:flex;gap:12px;align-items:center;background:white;border:1px solid var(--border);padding:10px 16px;border-radius:8px;width:400px;color:#7b88a0}.search input{border:0;background:none;width:100%;min-width:0;outline-offset:7px;font-size:.9rem;color:var(--ink)}#result-count{font-size:.8rem;color:var(--muted)}.category-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:30px}.filter{background:none;border:1px solid var(--border);border-radius:6px;padding:8px 13px;font-size:.8rem;color:#65728b}.filter.active{background:var(--ink);border-color:var(--ink);color:white}.filter span{opacity:.65;margin-left:6px}.empty{text-align:center;border:1px dashed #cdd5e5;padding:50px 20px;border-radius:12px}.empty h2{font-size:1.5rem}[hidden]{display:none!important}.product-intro{padding-top:33px;padding-bottom:65px}.breadcrumb{font-size:.8rem;color:var(--muted);display:inline-block;margin-bottom:45px}.product-hero{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center}.product-hero h1{font-size:3.8rem}.lead{font-size:1.2rem;line-height:1.7}.feature-list{list-style:none;padding:0;font-size:.9rem;color:#50617d;margin-bottom:27px}.feature-list li{margin:9px 0}.small-text{font-size:.8rem;margin-top:12px}.demo.large{transform:none}.demo.large .window-content{height:240px}.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 335px;gap:75px;padding-bottom:80px}.product-content>section{padding:38px 0;border-top:1px solid var(--border)}.product-content h2{font-size:1.85rem}.product-content h3{font-size:1.1rem}.product-content p,.product-content li{font-size:.95rem;color:var(--muted)}ol,ul{padding-left:24px}li{padding-left:4px;margin-bottom:13px}.info-note{background:#edf1fb;border-left:3px solid #7c94df;padding:17px 20px;border-radius:0 7px 7px 0;font-size:.9rem;color:#506182;margin:24px 0}.download-panel{background:white;border:1px solid var(--border);border-radius:13px;padding:25px}.download-panel h2{font-size:1.45rem}.download-panel p{font-size:.85rem}.download-panel .button{width:100%}.download-panel .button:disabled{background:#e7ebf2;color:#758198}.download-panel .button:hover{transform:none}.download-panel h3{font-size:.9rem;margin-top:30px}dl>div{border-bottom:1px solid #e9edf4;padding:11px 0}dt{font-size:.75rem;color:#7b869a}dd{margin:4px 0 0;font-size:.85rem;overflow-wrap:anywhere}.download-panel .quiet-link{display:inline-block;margin-top:20px;font-size:.8rem}.on-page{padding:30px 25px}.on-page h3{font-size:.8rem}.on-page a{display:block;font-size:.85rem;color:#69758a;margin:10px 0}.on-page a:hover{color:var(--blue)}details{border-bottom:1px solid var(--border);padding:18px 0}summary{cursor:pointer;font-weight:550;font-size:.95rem}details p{padding-top:14px;margin-bottom:0}.change{background:#eff3f8;padding:24px;border-radius:8px}.change h3{margin:16px 0 12px}.change p{margin-bottom:0}.prose{max-width:750px}.prose h2{font-size:1.8rem;margin-top:38px}.prose li{color:var(--muted)}.prose a:not(.button){color:var(--blue)}.guide-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:65px;padding-bottom:80px}.guide-nav{padding-top:26px;align-self:start;position:sticky;top:105px}.guide-nav a{display:block;padding:13px 0;font-size:.85rem;color:var(--muted);border-bottom:1px solid var(--border)}.guide-layout .prose section{padding:24px 0 36px;border-bottom:1px solid var(--border)}.guide-layout h2{margin-top:0}.code-wrap{background:#1b2940;color:#e0e7f3;border-radius:9px;padding:20px;display:flex;gap:15px;align-items:flex-start}.code-wrap code{font-size:.8rem;overflow-wrap:anywhere;min-width:0}.copy{background:#34455e;border:1px solid #5e708b;color:white;font-size:.75rem;border-radius:5px;padding:5px 10px}.copy-feedback{font-size:.8rem}.about-hero{padding-top:75px;padding-bottom:55px}.about-hero h1{font-size:clamp(3rem,6vw,5rem)}.about-grid{border-top:1px solid var(--border);display:grid;grid-template-columns:1fr 1.2fr;gap:100px;padding-top:55px;padding-bottom:85px}.about-statement{font-size:2rem;line-height:1.4;font-weight:600;letter-spacing:-.04em;padding-top:32px}.about-statement span{color:var(--blue)}.about-grid h2:first-child{margin-top:0}.legal{padding-top:70px;padding-bottom:85px}.legal h1{font-size:3.5rem}.legal h2{font-size:1.6rem}.product-content a{color:var(--blue)}
@media(min-width:1300px){.hero{gap:58px}.hero h1{font-size:3.65rem}}
@media(max-width:1000px){.hero{gap:25px;padding-top:55px}.hero h1{white-space:normal;font-size:2.7rem}.hero p{font-size:1rem}.actions{gap:16px}.hero-notes{gap:12px}.hero-visual{padding:0}.demo{padding:16px 13px 10px}.context{left:82px;font-size:.65rem}.selected-file{min-width:85px}.window-content{padding-left:12px}.principles{gap:45px}.product-hero{gap:35px}.product-layout{gap:35px;grid-template-columns:minmax(0,1fr) 300px}.guide-banner{margin-left:32px;margin-right:32px}.footer-main{gap:25px}.guide-layout{gap:30px;grid-template-columns:220px minmax(0,1fr)}}
@media(max-width:740px){.wrap{padding-left:22px;padding-right:22px}header{height:76px}.nav-wrap{padding:0 22px;gap:14px}.brand{font-size:1.2rem}.brand-icon{height:32px;width:32px;line-height:30px;font-size:1.5rem}header nav{gap:18px}header nav a{font-size:.85rem}.nav-cta{display:none}.hero{grid-template-columns:1fr;padding-top:43px;padding-bottom:38px;gap:35px}.hero h1{font-size:clamp(2.6rem,8vw,3.6rem)}.hero p br{display:none}.pill{font-size:.6rem}.hero-notes{font-size:.7rem}.hero-visual{max-width:470px;width:100%;margin:auto}.demo{padding:21px 19px 11px}.context{left:105px;font-size:.72rem}.visual-label{padding-top:15px}.trust-strip .wrap{flex-wrap:wrap;justify-content:flex-start;gap:10px 22px;font-size:.72rem}.trust-strip span:first-child{width:100%}.section{padding-top:43px;padding-bottom:45px}.section-heading{align-items:start;flex-direction:column;gap:15px}.section-heading h2{font-size:1.9rem}.tools-grid{grid-template-columns:1fr;gap:18px}.tool-card{padding:24px}.principles{grid-template-columns:1fr;gap:35px;padding-top:42px;padding-bottom:45px}.principles h2{font-size:2.3rem}.guide-banner{margin:0 22px 45px;padding:27px;flex-direction:column;align-items:flex-start}.guide-banner h2{font-size:1.6rem}.footer-main{grid-template-columns:1fr 1fr;gap:20px}.footer-note{grid-column:2}.footer-bottom{gap:20px;align-items:flex-start}footer{padding-left:22px;padding-right:22px}.page-intro{padding-top:44px}.page-intro h1{font-size:2.6rem}.search{width:100%}.catalog-controls{gap:12px}#result-count{white-space:nowrap}.category-filters{gap:7px}.filter{font-size:.75rem;padding:8px 10px}.catalog{padding-bottom:55px}.product-hero{grid-template-columns:1fr;gap:25px}.product-hero h1{font-size:3rem}.breadcrumb{margin-bottom:28px}.product-intro{padding-bottom:40px}.product-layout{display:flex;flex-direction:column;gap:25px}.product-layout>aside{order:-1}.on-page{display:none}.download-panel dl{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.product-content>section:first-child{padding-top:20px}.guide-layout{display:block}.guide-nav{position:static;margin-bottom:25px;padding-top:0}.guide-nav a{padding:10px 0}.code-wrap{flex-direction:column}.about-hero{padding-top:45px;padding-bottom:35px}.about-grid{grid-template-columns:1fr;gap:40px;padding-top:25px;padding-bottom:45px}.about-statement{padding-top:0}.legal{padding-top:45px}.card-bottom{gap:8px}.text-link{font-size:.75rem}.status{font-size:.65rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* Bilingual header and readable Vietnamese typography. */
.language-switch{display:flex;align-items:center;gap:3px;padding:3px;border:1px solid var(--border);border-radius:9px;flex-shrink:0;background:white}.language-switch a{display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:6px 9px;font-size:.8rem;border-radius:6px;font-weight:600;color:var(--muted)}.language-switch a[aria-current]{background:#e8edff;color:var(--blue)}.language-switch img{display:block;object-fit:cover;border-radius:2px;box-shadow:0 0 0 1px #17233c1a}.nav-wrap{gap:20px}.nav-cta{margin-left:auto}html[lang=vi] h1,html[lang=vi] h2,html[lang=vi] h3{line-height:1.25;letter-spacing:-.025em}html[lang=vi] .hero h1{white-space:normal;font-size:clamp(2.4rem,3.6vw,3.3rem)}html[lang=vi] .eyebrow{letter-spacing:.08em}html[lang=vi] .pill{line-height:1.6}html[lang=vi] .context{font-size:.7rem}.product-content code{overflow-wrap:anywhere}
@media(max-width:1050px){.nav-cta{display:none}.language-switch{margin-left:auto}header nav{gap:20px}}
@media(max-width:740px){header{height:auto;min-height:104px}.nav-wrap{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:7px 12px}.nav-wrap>nav{order:3;width:100%;justify-content:center;gap:28px}.language-switch a{min-height:34px;padding:4px 8px}.language-switch{margin-left:auto}.nav-wrap .brand{font-size:1.2rem}html[lang=vi] .hero h1{font-size:clamp(2rem,7vw,3rem)}.card-bottom{flex-wrap:wrap}.guide-banner .button{white-space:normal}.download-panel dl{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
/* Keep primary navigation at the page center, independent of right-side controls. */
@media(min-width:741px){.nav-wrap{position:relative}.nav-wrap>nav{position:absolute;left:50%;transform:translateX(-50%);justify-content:center;white-space:nowrap}}
/* Official supplied lockup; preserve the source artwork and aspect ratio. */
.brand .official-logo{display:block;width:190px;height:auto;max-width:100%}.footer-main .brand .official-logo{width:180px}.nav-wrap>.brand{flex-shrink:0}
@media(max-width:740px){.nav-wrap .official-logo{width:145px}.footer-main .brand .official-logo{width:150px}}

.footer-bottom{flex-wrap:wrap;font-size:.75rem;line-height:1.6;color:#65728b;font-weight:400}.footer-bottom>span{font:inherit;color:inherit;max-width:100%}

.hero-copy .download-total{font-size:.8125rem;line-height:1.65;margin:14px 0 0;color:#65728b}.hero-copy .download-total .download-source{font-size:.75rem;display:inline}.download-total strong{font-weight:600;font-variant-numeric:tabular-nums}.download-source{display:block;font-size:.75rem}

.hero-copy .download-total{font-size:.8125rem;white-space:nowrap}