:root{--blue:#265CE8;--blue-dark:#1745bd;--ink:#17243f;--muted:#62708a;--line:#dfe5ef;--soft:#f3f7ff;--font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:#fff;color:var(--ink);font:16px/1.85 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.45;letter-spacing:-.035em}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}.wrap{width:min(1200px,calc(100% - 80px));margin:auto}.skip{position:fixed;top:-80px;left:16px;background:var(--ink);color:#fff;padding:8px 20px;z-index:100}.skip:focus{top:8px}header{height:88px;position:sticky;top:0;background:rgba(255,255,255,.97);border-bottom:1px solid #edf0f6;z-index:50}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;gap:12px;align-items:center;font-size:23px;font-weight:650;white-space:nowrap}.brand img{border-radius:10px}.header-inner nav{display:flex;align-items:center;gap:34px;font-size:15px}.header-inner nav>a:not(.button):hover{color:var(--blue)}.button{display:inline-flex;justify-content:center;align-items:center;gap:28px;background:var(--blue);border:1px solid var(--blue);color:#fff;border-radius:7px;padding:14px 23px;font-size:15px;font-weight:600;transition:background .2s}.button:hover{background:var(--blue-dark)}.button.small{padding:10px 18px;gap:16px}.button.secondary{background:#fff;color:var(--blue)}.button.secondary:hover{background:var(--soft)}.text-link{font-weight:550;display:inline-flex;gap:18px;align-items:center;font-size:15px}.text-link:hover{text-decoration:underline;text-underline-offset:5px}.menu{display:none}.eyebrow{color:var(--blue);font-size:14px;letter-spacing:.06em;font-weight:550;margin-bottom:18px}.hero{background:#f4f7fd;padding:58px 0 0;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;min-height:630px}.hero-copy{padding-bottom:60px}.hero h1{font-size:64px;font-weight:650;line-height:1.22;letter-spacing:-3px}.lead{font-size:18px;line-height:1.95;color:var(--muted);margin-top:26px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:26px;margin-top:32px}.hero-facts{display:flex;gap:30px;margin-top:44px;color:var(--muted);font-size:14px}.hero-facts strong{color:var(--ink);font-size:22px;font-weight:550;margin-right:6px}.hero-screens{height:630px;position:relative;align-self:end}.hero-screens figure{position:absolute;border:6px solid #fff;border-radius:24px;overflow:hidden;box-shadow:0 14px 44px #2135551b;width:265px}.screen-back{left:0;top:75px;transform:rotate(-6deg)}.screen-front{right:0;top:0;transform:rotate(5deg)}.screen-caption{position:absolute;bottom:12px;right:0;background:#f4f7fd;padding:3px 9px;color:#758096;font-size:12px}.intro-line{border-bottom:1px solid var(--line);padding:25px 0}.intro-line>.wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}.intro-line strong{font-weight:550}.intro-line span{color:var(--muted);margin-left:24px;font-size:14px}.intro-line a{color:var(--blue);font-size:14px;white-space:nowrap}.section{padding:92px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:42px;margin-bottom:42px}.section-head h2,.section 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a:not(.brand){font-size:14px;color:var(--muted)}.footer-top .brand{margin-bottom:10px}.footer-top h3{font-size:15px;margin-bottom:10px;font-weight:600}.footer-top a:hover{color:var(--blue)}.footer-bottom{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;padding:22px 0;font-size:12px;color:#748098}.footer-bottom a:hover{text-decoration:underline}dialog{border:0;border-radius:12px;padding:24px;background:#f6f7fa;max-width:94vw;max-height:94vh}dialog::backdrop{background:#10192dcc}dialog>img{max-height:80vh;width:auto;margin:auto}dialog p{text-align:center;font-size:14px;color:var(--muted);margin-top:12px}.viewer-close{position:sticky;top:0;float:right;width:40px;height:40px;border:0;border-radius:50%;background:#fff;color:var(--ink);font-size:26px;z-index:1}
@media(max-width:1050px){.wrap{width:calc(100% - 48px)}.hero-grid{gap:30px;grid-template-columns:1fr 1fr}.hero h1{font-size:52px}.hero-screens{height:580px}.hero-screens figure{width:235px}.screen-back{left:-15px}.hero-facts{gap:18px}.hero-facts strong{font-size:19px}.header-inner nav{gap:22px}.feature-grid{gap:0 26px}.section-head h2,.section h2{font-size:31px}}
@media(max-width:760px){header{height:76px}.brand{font-size:21px}.brand img{width:36px;height:36px}.menu{display:block;background:#fff;border:1px solid var(--line);border-radius:6px;width:40px;height:40px;font-size:23px}.header-inner nav{display:none;position:absolute;top:75px;left:0;right:0;background:#fff;padding:20px 24px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:15px}.header-inner nav.open{display:flex}.hero{padding-top:35px}.hero-grid{grid-template-columns:1fr;gap:10px}.hero-copy{padding-bottom:25px}.hero h1{font-size:48px;letter-spacing:-2px}.lead{font-size:17px;margin-top:22px}.hero-facts{margin-top:28px}.hero-screens{width:min(480px,100%);height:520px;margin:auto}.hero-screens figure{width:230px}.screen-back{left:4px;top:50px}.screen-front{right:0}.intro-line>.wrap{display:block}.intro-line span{display:block;margin:5px 0 10px}.section{padding:60px 0}.section-head{display:block;margin-bottom:30px}.section-head>p{margin-top:20px}.section-head h2,.section h2{font-size:29px}.feature-grid{grid-template-columns:1fr 1fr;gap:0 24px}.feature-card h3{font-size:21px}.feature-card p{font-size:15px;min-height:112px}.footer-top{grid-template-columns:1fr 1fr;row-gap:32px}.footer-top>div:first-child{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:8px}}
@media(max-width:440px){.wrap{width:calc(100% - 40px)}.hero h1{font-size:44px}.eyebrow{font-size:13px}.hero-screens{height:440px}.hero-screens figure{width:195px}.hero-facts{gap:18px;font-size:12px}.hero-facts strong{font-size:19px}.actions{gap:20px}.feature-grid{grid-template-columns:1fr}.feature-card p{min-height:0}.feature-card h3{font-size:23px}.footer-top{gap:25px}.desktop{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.showcase{background:#f3f7ff}.showcase-grid{display:grid;grid-template-columns:.95fr 1fr;gap:95px;align-items:center}.showcase-copy .lead{font-size:17px;margin-top:24px}.topic-list{list-style:none;padding:0;margin:26px 0}.topic-list li{border-top:1px solid #d9e2f2;padding:15px 0;display:grid;grid-template-columns:85px 1fr;gap:20px}.topic-list strong{font-weight:550;font-size:15px}.topic-list span{color:var(--muted);font-size:15px}.app-crop{max-height:630px;overflow:hidden;border:8px solid #fff;border-radius:22px;box-shadow:0 12px 45px #20376012;max-width:330px;margin:auto}.app-crop img{width:100%}.showcase-grid.reverse .showcase-copy{order:2}.showcase-grid.reverse .app-crop{order:1}.plain-section{border-top:1px solid var(--line)}.preview-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.preview-item{display:grid;grid-template-columns:115px 1fr;align-items:start;gap:22px;padding-top:24px;border-top:1px solid var(--line)}.preview-item img{border:1px solid var(--line);border-radius:9px}.preview-item h3{font-size:20px;margin:8px 0 12px}.preview-item p{font-size:15px;color:var(--muted)}.preview-item .text-link{margin-top:19px;font-size:14px}.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:75px}.faq details{padding:20px 0;border-bottom:1px solid var(--line)}.faq details:first-child{border-top:1px solid var(--line)}.faq summary{font-size:17px;cursor:pointer;list-style:none;padding-right:36px;position:relative;font-weight:550}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';position:absolute;right:4px;color:var(--blue);font-size:23px;line-height:1.2}.faq details[open] summary:after{content:'−'}.faq details p{font-size:16px;color:var(--muted);margin-top:13px;line-height:1.95}.download-section{background:#172d60;color:#fff;padding:58px 0}.download-grid{display:grid;grid-template-columns:1fr auto;align-items:center;gap:40px}.download-grid h2{font-size:32px}.download-grid p{color:#cfdaee;margin-top:14px;font-size:16px}.download-grid .actions{margin-top:0}.download-grid .button{background:#fff;border-color:#fff;color:#204fb9}.download-grid .button.secondary{background:transparent;border-color:#899cbf;color:#fff}.download-grid .button:hover{background:#e5edff;color:#204fb9}.breadcrumb{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:32px}.breadcrumb a:hover{color:var(--blue)}.detail-hero{padding:30px 0 64px;background:#f4f7fd}.detail-hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:90px;align-items:center}.detail-hero h1{font-size:44px;margin:12px 0 22px}.detail-hero .headline{font-size:23px;line-height:1.7;font-weight:500;margin-bottom:20px;white-space:pre-line}.detail-hero .description{font-size:16px;color:var(--muted);line-height:1.95;max-width:610px}.detail-hero .device{max-width:240px;max-height:510px;overflow:hidden;border:6px solid #fff;border-radius:20px;box-shadow:0 8px 28px #20355512;margin:auto}.detail-hero .device img{width:100%}.detail-jump{border-bottom:1px solid var(--line);padding:20px 0}.detail-jump>.wrap{display:flex;gap:38px;font-size:14px}.detail-jump a:hover{color:var(--blue)}.content-section{padding:66px 0;border-bottom:1px solid var(--line)}.content-grid{display:grid;grid-template-columns:.85fr 1.3fr;gap:95px}.content-grid h2{font-size:29px}.content-grid>.section-label p{margin-top:20px;color:var(--muted);font-size:16px}.content-list article{border-top:1px solid var(--line);padding:20px 0}.content-list article:first-child{border-top:0;padding-top:0}.content-list h3{font-size:19px}.content-list p{color:var(--muted);margin-top:9px;font-size:16px}.gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px}.gallery figure{min-width:0}.gallery figure button{display:block;padding:0;border:1px solid #e0e5ee;border-radius:14px;overflow:hidden;background:#f2f4f9;width:100%;transition:box-shadow .2s}.gallery figure button:hover{box-shadow:0 8px 25px #192e4d1f}.gallery img{width:100%}.gallery figcaption{font-size:14px;margin-top:13px;color:var(--muted)}.gallery.count-1{grid-template-columns:minmax(210px,310px)}.gallery.count-3{grid-template-columns:repeat(3,minmax(0,260px))}.gallery-caption{font-size:13px;color:var(--muted);margin-top:22px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;margin-top:34px}.steps article{border-top:1px solid var(--line);padding-top:23px}.steps .num{font-size:14px;color:var(--blue)}.steps h3{font-size:20px;margin-top:12px}.steps p{color:var(--muted);margin-top:12px;font-size:16px}.related{display:flex;gap:12px 28px;flex-wrap:wrap;margin-top:24px}.related a{border-bottom:1px solid #a9bce8;color:var(--blue);font-size:15px}.help-intro{padding:52px 0 55px;background:var(--soft)}.help-intro h1{font-size:42px}.help-intro p{margin-top:20px;font-size:17px;color:var(--muted);max-width:650px}.help-layout{display:grid;grid-template-columns:230px 1fr;gap:65px}.help-toc{align-self:start;position:sticky;top:120px;display:flex;flex-direction:column;gap:15px;font-size:15px}.help-toc h2{font-size:17px;margin-bottom:8px}.help-toc a{color:var(--muted)}.help-toc a:hover{color:var(--blue)}.help-content>section{margin-bottom:54px}.help-content h2{font-size:27px;margin-bottom:23px}.help-content p{color:var(--muted)}.help-content .actions{margin-bottom:20px}.help-content .contact-line{margin-top:24px}.help-content .contact-line a{color:var(--blue)}.notice{border-left:3px solid var(--blue);padding:8px 0 8px 22px;margin-top:25px;font-size:15px;color:var(--muted)}.error{min-height:50vh;padding:80px 0}.error h1{font-size:36px;margin-bottom:20px}
@media(max-width:1050px){.showcase-grid{gap:55px}.content-grid{gap:50px}.detail-hero-grid{gap:50px}.preview-strip{gap:20px}.preview-item{grid-template-columns:85px 1fr;gap:17px}.download-grid{grid-template-columns:1fr}.download-grid .actions{margin-top:0}.faq-grid{gap:50px}.help-layout{gap:40px;grid-template-columns:190px 1fr}}
@media(max-width:760px){.showcase-grid,.content-grid,.faq-grid,.detail-hero-grid{grid-template-columns:1fr;gap:34px}.showcase-grid.reverse .showcase-copy{order:0}.showcase-grid.reverse .app-crop{order:0}.app-crop{max-height:480px;max-width:280px}.preview-strip{grid-template-columns:1fr}.preview-item{grid-template-columns:100px 1fr}.preview-item img{max-height:170px;width:100px;object-fit:cover;object-position:top}.gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px 18px}.gallery.count-3{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery.count-1{grid-template-columns:minmax(200px,280px)}.detail-hero{padding-bottom:44px}.detail-hero h1{font-size:34px}.detail-hero .headline{font-size:22px}.detail-hero .device{max-width:230px;max-height:390px}.detail-jump>.wrap{gap:24px;overflow-x:auto;white-space:nowrap}.content-section{padding:46px 0}.content-grid h2{font-size:27px}.section-label p{margin-top:14px!important}.steps{grid-template-columns:1fr;gap:27px}.steps article{display:grid;grid-template-columns:34px 1fr;gap:7px 15px}.steps .num{grid-row:1/3}.steps h3{margin:0}.steps p{margin:0;grid-column:2}.download-grid h2{font-size:29px}.download-section{padding:42px 0}.help-layout{grid-template-columns:1fr;gap:34px}.help-toc{position:static;flex-direction:row;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:22px;gap:12px 24px}.help-toc h2{width:100%}.help-intro h1{font-size:34px}.faq summary{font-size:16px}}
/* Product architecture, navigation and editorial pages */
:root{--blue:#265CE8;--blue-dark:#1747bd;--ink:#192841;--muted:#606f84;--line:#e0e7f0;--soft:#f2f7ff}
html{scroll-padding-top:112px}.header-inner nav{gap:26px;font-size:15px}.header-inner nav .nav-link{white-space:nowrap}.nav-link[aria-current="page"],.nav-dropdown.current>summary{color:var(--blue);font-weight:650}.nav-dropdown{position:relative}.nav-dropdown>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:9px;padding:14px 0;white-space:nowrap}.nav-dropdown>summary::-webkit-details-marker{display:none}.nav-dropdown>summary span{font-size:17px}.nav-dropdown[open]>summary span{transform:rotate(180deg)}.dropdown-panel{position:absolute;top:100%;left:-24px;min-width:228px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;box-shadow:0 18px 45px #20233d16;display:flex;flex-direction:column;gap:2px}.dropdown-panel>a{display:block;padding:10px 13px;border-radius:5px;font-size:15px}.dropdown-panel>a:hover{background:var(--soft);color:var(--blue)}
.hero{background:#f3f7ff}.hero-grid{min-height:640px;grid-template-columns:1.06fr 1fr;gap:60px}.hero h1{font-size:56px;line-height:1.3;letter-spacing:-.035em}.hero-screens{height:620px}.hero-screens figure{border:5px solid #fff;box-shadow:0 16px 48px #24244915;border-radius:22px;width:260px}.hero-screens .screen-back{transform:none;left:-6px;top:88px}.hero-screens .screen-front{transform:none;right:0;top:12px}.screen-caption{background:#f3f7ff;font-size:13px}.hero-facts{border-top:1px solid #dcdeec;padding-top:25px;margin-top:34px;gap:30px;font-size:14px}.hero-facts strong{font-size:26px;color:var(--blue)}.hero-copy .lead{font-size:17px}.intro-line span{font-size:15px}.ability-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.ability-grid>a{padding:27px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .2s}.ability-grid>a:hover{background:var(--soft)}.ability-number{font-size:14px;color:var(--blue)}.ability-grid h3{font-size:23px;margin:10px 0 9px}.ability-grid p{color:var(--muted);font-size:15px}.section-tail{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-top:28px;color:var(--muted);font-size:15px}.section-tail .text-link{color:var(--blue);flex-shrink:0}.showcase{background:#f2f7ff}.explore-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 46px}.explore-card{padding:34px 0;display:grid;grid-template-columns:102px 1fr;gap:24px;border-top:1px solid var(--line);align-items:start}.mini-screen{height:204px;overflow:hidden;border:1px solid var(--line);border-radius:9px;background:var(--soft)}.mini-screen img{width:100%;height:auto}.explore-card .eyebrow{font-size:13px;letter-spacing:0;margin:1px 0 9px}.explore-card h3{font-size:24px}.explore-card p:not(.eyebrow){font-size:15px;line-height:1.9;margin:12px 0 17px;color:var(--muted)}.explore-card .text-link{color:var(--blue);font-size:14px}.explore-card:hover h3{color:var(--blue)}.explore-card:last-child{grid-column:1/-1;max-width:calc(50% - 23px)}.explore-full{column-gap:70px}.explore-full .explore-card{padding:42px 0;grid-template-columns:130px 1fr}.explore-full .mini-screen{height:256px}.compare-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:55px}.compare-grid h3{font-size:24px}.compare-grid>div>p:not(.eyebrow){color:var(--muted);margin:17px 0}.compare-grid .text-link{color:var(--blue)}
.page-hero{padding:32px 0 65px;background:var(--soft);border-bottom:1px solid var(--line)}.page-hero .breadcrumb{margin-bottom:46px}.page-hero h1{font-size:48px;line-height:1.3}.page-hero .lead{max-width:760px;margin-top:21px;font-size:18px}.page-hero .eyebrow{margin-bottom:14px}.breadcrumb{font-size:14px;line-height:1.7}.detail-hero{background:var(--soft)}.detail-hero-grid{grid-template-columns:1.3fr .65fr;gap:70px}.detail-hero .device{max-width:235px;max-height:500px;box-shadow:0 12px 38px #24244912}.detail-hero .headline{font-size:25px}.detail-hero h1{margin-bottom:20px}.detail-hero .description{line-height:1.95}.detail-jump>.wrap{font-size:15px}.section-no{display:block;color:var(--blue);font-size:14px;margin-bottom:15px}.content-section{padding:74px 0}.content-grid{grid-template-columns:.9fr 1.2fr;gap:110px}.content-grid h2{font-size:30px;max-width:390px}.content-list h3{font-size:20px}.related-section{padding:36px 0 48px;background:#f8fbff}.related-section h2{font-size:20px}.gallery-caption{font-size:14px}.download-section{background:#17386b}.download-grid h2{font-size:30px;line-height:1.5}.download-grid p{color:#d9e6f8}.download-grid>.button{background:#fff;color:var(--blue);border-color:#fff;white-space:nowrap}.footer-bottom{font-size:13px}
.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 36px}.article-card{padding:25px 0 26px;border-top:1px solid var(--line);display:flex;flex-direction:column;align-items:flex-start}.article-category{color:var(--blue);font-size:14px;line-height:1.5;margin-bottom:17px}.article-card h3{font-size:23px;line-height:1.6;font-weight:600}.article-card h3 a:hover{color:var(--blue)}.article-card>p:not(.article-category){color:var(--muted);margin-top:15px;font-size:16px;line-height:1.95}.article-card-bottom{width:100%;margin-top:auto;padding-top:27px;display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:14px}.article-card-bottom time{color:var(--muted)}.article-card-bottom a{color:var(--blue)}.science-list{padding-top:46px}.science-list .article-grid{gap:22px 46px}.science-list .article-card{min-height:275px}.science-note{font-size:15px;color:var(--muted);border-top:1px solid var(--line);padding-top:30px;margin-top:30px;max-width:830px}.article-header{padding-top:35px;padding-bottom:46px;border-bottom:1px solid var(--line)}.article-header .breadcrumb{margin-bottom:46px}.article-header h1{font-size:43px;line-height:1.5;max-width:890px;letter-spacing:-.02em}.article-summary{font-size:19px;line-height:1.9;max-width:840px;color:var(--muted);margin-top:21px}.article-meta{display:flex;gap:12px 26px;flex-wrap:wrap;margin-top:28px;color:var(--muted);font-size:14px}.article-layout{display:grid;grid-template-columns:230px minmax(0,760px);gap:90px;padding-top:48px;padding-bottom:85px}.article-toc{position:sticky;top:118px;align-self:start;display:flex;flex-direction:column;gap:16px;font-size:15px;line-height:1.7}.article-toc>p{font-weight:600;margin-bottom:4px}.article-toc a{color:var(--muted)}.article-toc a:hover{color:var(--blue)}.article-prose{font-size:18px;line-height:2}.article-prose>section{margin-top:43px}.article-prose h2{font-size:27px;line-height:1.65;margin-bottom:18px;letter-spacing:-.015em}.article-prose p+p{margin-top:20px}.quick-answer{background:var(--soft);border-left:3px solid var(--blue);padding:26px 30px}.quick-answer .eyebrow{margin:0 0 10px}.quick-answer>p:last-child{font-size:18px;line-height:1.9}.citation{color:var(--blue);font-size:14px;margin-left:6px}.references{padding-top:28px;border-top:1px solid var(--line)}.references ol{padding-left:24px;overflow-wrap:anywhere;font-size:15px;line-height:1.9}.references a{color:var(--blue)}.references>p{color:var(--muted);font-size:14px;line-height:1.9}.article-product{margin-top:40px;padding:30px;border:1px solid var(--line);border-radius:8px}.article-product h2{font-size:24px}.article-product>p:not(.eyebrow){font-size:16px;line-height:1.9;color:var(--muted)}.article-product .text-link{margin-top:20px;color:var(--blue)}
.download-options{padding-top:46px}.download-brand{display:flex;align-items:center;gap:22px;margin-bottom:38px}.download-brand>img{border-radius:17px}.download-brand h2{font-size:29px}.download-brand p{font-size:15px;color:var(--muted);margin-top:5px}.download-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.download-card{padding:30px;border:1px solid var(--line);border-radius:10px;display:grid;grid-template-columns:1fr 154px;gap:22px;align-items:center}.download-card .eyebrow{margin-bottom:10px}.download-card h2{font-size:28px}.download-card p:not(.eyebrow){font-size:15px;color:var(--muted);margin:14px 0 23px}.download-card .button{padding:10px 14px;font-size:14px;gap:12px}.download-card figure>img{width:154px;height:154px}.download-card figcaption{text-align:center;font-size:14px;color:var(--muted);margin-top:9px}
@media(max-width:1120px){.header-inner nav{gap:18px;font-size:14px}.brand{font-size:21px}.hero-grid{gap:35px}.hero h1{font-size:48px}.hero-screens figure{width:225px}.hero-screens{height:555px}.hero-grid{min-height:565px}.hero-facts{gap:20px}.content-grid{gap:65px}.article-layout{gap:55px;grid-template-columns:200px minmax(0,1fr)}.download-card{grid-template-columns:1fr;padding:25px}.download-card figure{display:flex;align-items:center;gap:20px}.download-card figure>img{width:138px;height:138px}.download-card figcaption{max-width:70px}.compare-grid{gap:32px}}
@media(max-width:900px){header{height:76px}.menu{display:block;background:#fff;border:1px solid var(--line);border-radius:6px;width:42px;height:42px;font-size:23px}.header-inner nav{display:none;position:absolute;top:75px;left:0;right:0;background:#fff;padding:20px 24px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:5px;max-height:calc(100dvh - 76px);overflow:auto;font-size:16px}.header-inner nav.open{display:flex}.header-inner nav>.nav-link{padding:10px 0}.nav-dropdown>summary{padding:10px 0;justify-content:space-between}.dropdown-panel{position:static;box-shadow:none;border:0;border-left:2px solid var(--line);border-radius:0;min-width:0;padding:0 0 0 14px;margin:5px 0 12px}.dropdown-panel>a{font-size:15px}.header-inner nav>.button{margin-top:10px}.ability-grid{grid-template-columns:repeat(2,1fr)}.explore-grid{gap:0 30px}.explore-card{grid-template-columns:75px 1fr;gap:17px}.mini-screen{height:154px}.explore-card h3{font-size:21px}.explore-full .explore-card{grid-template-columns:90px 1fr;gap:20px}.explore-full .mini-screen{height:185px}.explore-card:last-child{max-width:calc(50% - 15px)}.article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.compare-grid{grid-template-columns:1fr 1fr}.compare-grid>div:first-child{grid-column:1/-1}.article-layout{grid-template-columns:1fr;gap:30px}.article-toc{position:static;flex-direction:row;flex-wrap:wrap;padding-bottom:25px;border-bottom:1px solid var(--line);gap:12px 24px}.article-toc>p{width:100%}.article-prose{max-width:760px}.detail-hero-grid{gap:36px}}
@media(max-width:760px){.hero-grid{grid-template-columns:1fr;gap:14px;min-height:0}.hero h1{font-size:45px}.hero-screens{height:515px;width:min(460px,100%)}.hero-screens figure{width:225px}.hero-screens .screen-back{left:0;top:66px}.hero-screens .screen-front{right:0;top:0}.hero-facts{gap:26px;padding-top:20px}.hero-facts strong{font-size:24px}.hero-facts span{font-size:14px}.hero-copy{padding-bottom:20px}.page-hero{padding-bottom:45px}.page-hero .breadcrumb{margin-bottom:30px}.page-hero h1{font-size:37px}.page-hero .lead{font-size:17px}.section-tail{align-items:flex-start;flex-direction:column;gap:15px}.ability-grid>a{padding:23px 18px}.ability-grid h3{font-size:22px}.explore-grid{grid-template-columns:1fr}.explore-card,.explore-full .explore-card{grid-template-columns:105px 1fr;gap:24px;padding:28px 0}.explore-card:last-child{grid-column:auto;max-width:none}.mini-screen,.explore-full .mini-screen{height:210px}.explore-card .eyebrow{font-size:13px}.explore-card h3{font-size:22px}.explore-card p:not(.eyebrow){font-size:15px}.detail-hero-grid,.content-grid{grid-template-columns:1fr}.content-section{padding:48px 0}.content-grid h2{font-size:27px}.section-no{margin-bottom:9px}.content-grid{gap:25px}.detail-hero .device{max-height:405px;max-width:235px}.detail-hero .headline{font-size:22px}.download-grid h2{font-size:28px}.download-grid>.button{justify-self:start}.download-cards{grid-template-columns:1fr}.download-card{grid-template-columns:1fr 140px;padding:25px}.download-card figure{display:block}.download-card figcaption{max-width:none}.download-brand{gap:17px}.download-brand>img{width:60px;height:60px}.download-brand h2{font-size:26px}.article-header h1{font-size:33px}.article-header .breadcrumb{margin-bottom:31px}.article-summary{font-size:17px}.article-header{padding-bottom:33px}.article-layout{padding-top:30px;padding-bottom:55px}.article-prose{font-size:17px}.article-prose h2{font-size:25px}.quick-answer{padding:21px 23px}.quick-answer>p:last-child{font-size:17px}.article-meta{gap:7px 18px}.science-list .article-card{min-height:0}.compare-grid{gap:26px}.compare-grid h3{font-size:22px}.article-card h3{font-size:22px}.download-card h2{font-size:25px}}
@media(max-width:480px){.hero h1{font-size:40px}.hero-screens{height:442px}.hero-screens figure{width:195px}.hero-grid{gap:8px}.hero-facts{gap:23px}.hero-facts strong{font-size:23px}.ability-grid>a{padding:21px 16px}.ability-grid p{font-size:14px}.explore-card,.explore-full .explore-card{grid-template-columns:90px 1fr;gap:18px}.mini-screen,.explore-full .mini-screen{height:185px}.explore-card .eyebrow{line-height:1.7}.explore-card p:not(.eyebrow){font-size:15px}.article-grid{grid-template-columns:1fr}.article-card{padding:25px 0}.article-card h3{font-size:23px}.article-card-bottom{padding-top:20px}.compare-grid{grid-template-columns:1fr}.compare-grid>div:first-child{grid-column:auto}.download-card{grid-template-columns:1fr;padding:26px}.download-card figure{display:flex;gap:22px;border-top:1px solid var(--line);padding-top:22px}.download-card figure>img{width:144px;height:144px}.download-card figcaption{text-align:left;max-width:70px}.page-hero h1{font-size:34px}.article-header h1{font-size:30px}.article-product{padding:23px}.gallery.count-1{grid-template-columns:minmax(0,280px)}}
@media(max-width:360px){.hero h1{font-size:35px}.hero-screens figure{width:178px}.hero-screens{height:410px}.hero-facts{gap:18px}.hero-facts span{font-size:13px}.hero-facts strong{font-size:22px}.explore-card,.explore-full .explore-card{grid-template-columns:75px 1fr}.mini-screen,.explore-full .mini-screen{height:155px}}

/* 2026-09 refinement: aligned screens, distinct training colors, editorial images. */
.hero-screens{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;height:auto;width:100%;padding:30px 0 55px;align-self:center;align-items:start}
.hero-screens figure,.hero-screens .screen-back,.hero-screens .screen-front{position:static;transform:none;width:100%;max-width:none;aspect-ratio:900/1951;border-radius:20px;margin:0}
.hero-screens img{width:100%;height:100%;object-fit:cover;object-position:top}
.ability-grid{border:0;gap:16px}.ability-grid>a{border:0;border-radius:12px;min-height:207px;padding:28px;color:#fff;background:#5356b8;transition:transform .18s,filter .18s}
.ability-grid>a:nth-child(2){background:#216b96}.ability-grid>a:nth-child(3){background:#7650a0}.ability-grid>a:nth-child(4){background:#34736d}.ability-grid>a:nth-child(5){background:#a75268}.ability-grid>a:nth-child(6){background:#425d98}.ability-grid>a:nth-child(7){background:#95602d}.ability-grid>a:nth-child(8){background:#4e7151}
.ability-grid>a:hover{background:#5356b8;filter:brightness(1.08);transform:translateY(-3px)}.ability-grid>a:nth-child(2):hover{background:#216b96}.ability-grid>a:nth-child(3):hover{background:#7650a0}.ability-grid>a:nth-child(4):hover{background:#34736d}.ability-grid>a:nth-child(5):hover{background:#a75268}.ability-grid>a:nth-child(6):hover{background:#425d98}.ability-grid>a:nth-child(7):hover{background:#95602d}.ability-grid>a:nth-child(8):hover{background:#4e7151}
.ability-grid .ability-number{color:#fff;opacity:.8}.ability-grid h3{font-size:27px;margin:17px 0 8px}.ability-grid p{color:#fff;opacity:.94;font-size:15px}
.science-heading>.text-link{color:var(--blue);white-space:nowrap;margin-bottom:9px}
.explore-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:32px 28px}.explore-card{grid-column:span 2;display:flex;flex-direction:column;border:0;padding:0;gap:21px}.explore-card:nth-child(4),.explore-card:nth-child(5){grid-column:span 3}.explore-card:last-child{max-width:none}.explore-art{width:100%;aspect-ratio:3/2;border-radius:12px;overflow:hidden;background:var(--soft)}.explore-art img{width:100%;height:100%;object-fit:cover}.explore-card:nth-child(n+4) .explore-art{aspect-ratio:2/1}.explore-card .eyebrow{margin-top:0}.explore-card h3{font-size:24px}.explore-card p:not(.eyebrow){margin-bottom:12px}
.article-cover-link{width:100%;display:block;margin-bottom:23px;overflow:hidden;border-radius:9px;aspect-ratio:3/2}.article-cover-link img{width:100%;height:100%;object-fit:cover;transition:transform .3s}.article-cover-link:hover img{transform:scale(1.035)}.article-card{border-top:0}.article-card-bottom>span{color:var(--muted)}
.article-figure{margin:32px 0}.article-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:9px}.article-figure figcaption{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8}.article-figure figcaption a{text-decoration:underline;text-underline-offset:3px}
@media(max-width:900px){.hero-screens{gap:12px}.ability-grid>a{min-height:188px}.explore-card{grid-column:span 3}.explore-card:nth-child(n+4){grid-column:span 3}.explore-card:nth-child(n+4) .explore-art{aspect-ratio:3/2}.explore-card:last-child{grid-column:span 3}.science-heading{gap:22px}}
@media(max-width:760px){.hero-screens{width:min(460px,100%);padding:10px 0 40px;gap:16px}.hero-screens figure{border-radius:16px}.ability-grid{gap:12px}.ability-grid>a{padding:22px 19px}.ability-grid h3{font-size:24px}.explore-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 22px}.explore-card,.explore-card:nth-child(n+4),.explore-card:last-child{grid-column:auto;gap:18px}.science-heading>.text-link{margin-top:20px;margin-bottom:0}.article-figure{margin:27px 0}}
@media(max-width:480px){.hero-screens{gap:12px}.hero-screens figure{border-width:4px;border-radius:13px}.ability-grid>a{padding:21px 16px;min-height:191px}.ability-grid h3{font-size:24px}.ability-grid p{font-size:14px}.explore-grid{grid-template-columns:1fr;gap:35px}.explore-card{gap:18px}.explore-card .explore-art,.explore-card:nth-child(n+4) .explore-art{aspect-ratio:3/2}}

.explore-card:nth-child(n+4) .explore-art{aspect-ratio:3/2}

/* Homepage 2 + 3 grid and support contact area. */
@media(min-width:901px){.explore-card,.explore-card:nth-child(4),.explore-card:nth-child(5),.explore-card:last-child{grid-column:span 2}.explore-card:nth-child(1),.explore-card:nth-child(2){grid-column:span 3}}
.wechat-contact{display:grid;grid-template-columns:1fr 210px;align-items:center;gap:32px;padding:28px;margin:30px 0;background:var(--soft);border:1px solid var(--line);border-radius:12px}.wechat-contact h3{font-size:23px;margin-bottom:12px}.wechat-contact p{font-size:16px;line-height:1.9}.wechat-contact .text-link{margin-top:18px;color:var(--blue)}.wechat-contact figure{width:210px}.wechat-contact img{width:210px;height:210px;border-radius:0;background:white}.wechat-contact figcaption{font-size:14px;color:var(--muted);text-align:center;margin-top:8px}
@media(max-width:600px){.wechat-contact{grid-template-columns:1fr;padding:24px;gap:24px}.wechat-contact figure{justify-self:center}.help-content .faq details{padding:20px 0}.help-content .faq summary{line-height:1.75}}