/* Source: assets/site.css */

:root{--ys-blue:#2997ff;--ys-ink:#121318;--ys-nav:64px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:85px}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif}a{text-decoration:none;color:inherit}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #2997ff;outline-offset:4px}button{touch-action:manipulation}.ys-header{position:sticky;top:0;height:var(--ys-nav);width:100%;z-index:100;background:#0c0d10ed;border-bottom:1px solid #ffffff15;backdrop-filter:blur(24px);color:#f5f5f7}.ys-nav-inner{height:100%;max-width:1320px;padding:0 40px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}.ys-brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;font-size:19px;font-weight:650;letter-spacing:1px;line-height:1}.ys-brand img{width:26px;height:25px;object-fit:contain}.ys-brand small{margin-left:2px;color:#a8a9b2;font-size:10px;letter-spacing:2px;font-weight:500}.ys-links{display:flex;align-items:center;gap:34px;font-size:14px}.ys-links a{color:#b9b9c0;transition:color .2s}.ys-links a:hover,.ys-links a[aria-current]{color:#fff}.ys-links .ys-nav-cta{background:#fff;color:#121318;border-radius:24px;padding:9px 17px;font-size:13px}.ys-footer{background:#f5f5f7;color:#73737c;padding:30px 40px;font-size:13px}.ys-footer-inner{max-width:1240px;margin:auto;display:flex;justify-content:space-between;gap:20px}.ys-footer a:hover{color:#111}.ys-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;border:0;border-radius:28px;background:#0071e3;color:white;padding:14px 27px;font-size:16px;line-height:1.3;transition:background .2s,transform .2s}.ys-button:hover{background:#1683f1;transform:translateY(-1px)}.ys-link{display:inline-flex;align-items:center;gap:10px;color:#2997ff;font-size:16px}.ys-link:hover{text-decoration:underline}.ys-wrap{width:min(1240px,calc(100% - 80px));margin:auto}
@media(max-width:680px){:root{--ys-nav:58px}.ys-nav-inner{padding:0 20px;gap:16px}.ys-brand{font-size:17px;gap:8px}.ys-brand small{display:none}.ys-brand img{width:23px;height:22px}.ys-links{gap:17px;font-size:13px}.ys-links .ys-nav-about{display:none}.ys-links .ys-nav-cta{padding:8px 12px;font-size:12px}.ys-wrap{width:calc(100% - 40px)}.ys-footer{padding:26px 20px}.ys-footer-inner{flex-direction:column;gap:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

.ys-brand img.ys-official-logo{width:132px;height:32px;filter:brightness(0) invert(1)}@media(max-width:680px){.ys-brand img.ys-official-logo{width:108px;height:26px}.ys-links{gap:14px}}

/* Source: assets/design-system.css */
/* Typography and spacing reference: Apple China iPhone overview, checked 2026-09-21.
   Super headline 80/64/48, body 17/25, section-heading gap 48/32.
   Native system fonts are used; no Apple font files are redistributed. */
:root{--ys-nav:52px;--type-super:80px;--type-section:48px;--type-card:28px;--space-section:120px;--space-head:48px;--text-primary:#f5f5f7;--text-secondary:#a1a1a6;--text-tertiary:#86868b;--layout-width:1260px;--page-gutter:6.25vw;color-scheme:dark}body{font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.47059;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,p{overflow-wrap:break-word}h1,h2,h3{font-weight:600;letter-spacing:0;text-wrap:balance}p{text-wrap:pretty}button{letter-spacing:0}.ys-wrap{width:min(var(--layout-width),calc(100% - var(--page-gutter)*2))}.ys-nav-inner{max-width:1340px;padding:0 var(--page-gutter)}.ys-brand img.ys-official-logo{width:112px;height:28px}.ys-links{font-size:12px;gap:36px}.ys-links .ys-nav-cta{font-size:12px;padding:6px 14px}.ys-header{border-bottom:1px solid #ffffff12;background:#08090ce6}.ys-button,.pill-primary,.pill-secondary{font-size:17px;line-height:1.17648;padding:12px 22px;min-height:44px;border-radius:980px;gap:10px}.ys-link{font-size:17px;line-height:1.47}.eyebrow,.overline,.section-eyebrow{font-size:14px;line-height:1.4286;letter-spacing:0;font-weight:500;color:var(--text-secondary)}
.ys-home .hero{min-height:730px;height:calc(100svh - 52px);max-height:980px}.ys-home .hero-copy{width:46%;padding-left:max(var(--page-gutter),calc((100vw - 1260px)/2));top:25%;text-align:left}.ys-home .hero-copy h1{font-size:var(--type-super);line-height:1.1;letter-spacing:-.015em;font-weight:600;margin:0;white-space:nowrap}.ys-home .hero-copy h1 span{color:#f5f5f7;background:none}.ys-home .hero .eyebrow{font-size:17px;letter-spacing:0;color:#a1a1a6;margin:0 0 24px}.ys-home .hero-intro{font-size:21px;line-height:1.45;letter-spacing:0;max-width:390px;margin:28px 0 32px;color:#a1a1a6}.ys-home .hero-actions{justify-content:flex-start;gap:24px}.ys-home .hero-actions .ys-button,.ys-home .hero-actions .ys-link{font-size:17px}.ys-home .raptor-local{left:43%!important;bottom:50px!important}.ys-home .hero-bottom{left:var(--page-gutter);right:var(--page-gutter);bottom:38px}.hero-caption strong{font-size:14px;font-weight:500}.hero-caption div>span{font-size:12px}.hero-controls button{font-size:12px;min-height:36px;padding:8px 14px}.raptor-credit{left:var(--page-gutter)!important;bottom:10px!important;font-size:11px!important}.model-edition{font-size:11px;top:36px;left:18%}.raptor-side-controls{right:30px}.raptor-side-controls button{font-size:12px;padding:12px}.part-info{font-size:14px}.part-info p{font-size:14px;line-height:1.57}.raptor-parts button{font-size:11px}.hero-copy .hero-actions .ys-button{padding:12px 22px}
.intro-band{padding:var(--space-section) 0;background:#101114;text-align:center}.intro-band .ys-wrap{max-width:980px}.intro-band p{font-size:21px;line-height:1.4;margin:0 0 24px;color:#86868b}.intro-band h2{font-size:var(--type-section);line-height:1.18;font-weight:600;letter-spacing:0;margin:0 auto 40px;max-width:860px}.intro-points{font-size:17px;color:#b9b9bf;gap:48px}.products{padding:var(--space-section) 0}.section-heading{margin-bottom:var(--space-head);gap:64px}.section-heading h2{font-size:var(--type-section);line-height:1.15;letter-spacing:0;font-weight:600}.section-heading .eyebrow{margin:0 0 20px}.section-heading>p{font-size:17px;line-height:1.6;color:#a1a1a6;max-width:340px;margin:0 0 4px}.ship-feature{height:640px;border-radius:28px}.ship-feature-copy{left:48px;top:48px;max-width:380px}.product-tag{font-size:14px;letter-spacing:0;color:#aebccc}.ship-feature h3{font-size:48px;line-height:1.17;margin:18px 0 24px;letter-spacing:0}.ship-feature p{font-size:24px;line-height:1.4;margin:0 0 32px;color:#d2dbe3}.ship-feature-bottom{left:48px;right:48px;bottom:32px;font-size:14px;padding-top:24px;gap:32px}.product-next{gap:24px;margin-top:24px}.product-next article{padding:40px;min-height:510px;border-radius:28px}.product-next h3{font-size:32px;line-height:1.2;margin:16px 0 20px;letter-spacing:0;max-width:340px}.product-next p{font-size:17px;line-height:1.6;max-width:340px;color:#a1a1a6}.product-next .ys-link{margin-top:10px}.energy-card img{width:430px;right:-60px;bottom:-30px;opacity:.88}.material-card img{position:absolute;width:100%;height:250px;bottom:0;left:0;object-fit:cover;object-position:center;opacity:.72;mask-image:linear-gradient(transparent,#000 35%)}.material-card .ys-link{position:relative;z-index:2}.material-word{font-size:76px;bottom:32px;letter-spacing:-3px;color:#a7d9ef12}.about-section{padding:var(--space-section) 0}.about-grid{grid-template-columns:1fr 1fr;gap:100px}.about-section h2,.contact-section h2{font-size:var(--type-section);line-height:1.18;letter-spacing:0}.about-copy p{font-size:21px;line-height:1.6;color:#6e6e73}.about-copy p+p{font-size:17px;line-height:1.6}.about-copy>span{font-size:12px}.contact-section{padding:var(--space-section) 0;gap:80px}.contact-address{min-width:310px}.contact-address p{font-size:24px;line-height:1.6;margin:24px 0}.contact-address>span{font-size:12px;letter-spacing:.08em}.contact-address a{font-size:17px}
.breadcrumbs-ys{font-size:12px;padding:24px 0}.product-hero{grid-template-columns:40% 60%;min-height:650px}.product-hero-copy{padding:32px 0 64px}.product-hero h1{font-size:56px;line-height:1.15;letter-spacing:0;margin:24px 0}.product-intro{font-size:21px;line-height:1.52;max-width:360px;margin:24px 0 32px;color:#a1a1a6}.product-micro{font-size:12px;line-height:1.5;margin-top:16px;color:#86868b}.product-hero .showroom{height:620px;margin-right:0}.lesson-highlights{padding:var(--space-section) 0}.lesson-highlights>h2,.product-next-course h2{font-size:var(--type-section);line-height:1.18;letter-spacing:0;margin:20px 0 var(--space-head)}.lesson-cards{gap:24px}.lesson-cards article{padding:32px;border-radius:24px;min-height:270px}.lesson-cards h3{font-size:28px;line-height:1.14;letter-spacing:0;font-weight:600;margin:32px 0 16px}.lesson-cards p{font-size:17px;line-height:1.55;color:#a1a1a6}.lesson-cards a{font-size:14px;margin-top:24px}.product-next-course{padding:80px 0 120px}.product-next-course h2{margin:20px 0}.product-next-course p:not(.overline){font-size:17px;line-height:1.55;color:#a1a1a6}.content-main>h1{font-size:64px;line-height:1.125;letter-spacing:0;margin:24px 0 32px}.content-main>.overline{margin-top:80px}.content-lead{font-size:24px;line-height:1.5;color:#a1a1a6;max-width:800px}.experience-directory{gap:24px;margin-top:64px}.experience-directory article{padding:32px;border-radius:24px}.experience-directory h2{font-size:28px;line-height:1.2;letter-spacing:0;margin:40px 0 24px}.experience-directory p{font-size:17px;line-height:1.55;min-height:106px}.experience-directory article>span,.directory-tags span{font-size:12px}.experience-directory .pill-primary{font-size:14px;min-height:40px}.text-link{font-size:14px}.about-values{gap:48px;margin:96px 0 64px}.about-values h2{font-size:28px;line-height:1.2}.about-values p,.prose{font-size:17px;line-height:1.65}.prose h2{font-size:28px;font-weight:600;letter-spacing:0;margin-top:48px}.contact-place h2{font-size:32px}.contact-place p{font-size:21px}.content-main{padding-bottom:120px}
.experience-title-row h1{font-size:28px;line-height:1.14;font-weight:600;letter-spacing:0;margin:16px 0 24px}.experience-title-row h1 span,.experience-title-row>a{font-size:14px}.step-nav{gap:12px;margin-bottom:24px}.step-nav button{font-size:15px;line-height:1.3;min-height:52px;padding:14px 18px}.step-nav button>span{font-size:12px}.experience-layout{grid-template-columns:minmax(0,1fr) 340px;gap:24px}.experience-layout>.showroom{height:clamp(550px,calc(100svh - 260px),740px);border-radius:24px}.lesson-panel{padding:28px;border-radius:24px;background:#15191f}.lesson-panel h2{font-size:28px;line-height:1.25;font-weight:600;letter-spacing:0;margin:24px 0 16px}.lesson-panel>p{font-size:17px;line-height:1.55;color:#a1a1a6;margin-bottom:24px}.lesson-kicker,.scene-metric span{font-size:12px;letter-spacing:0}.scene-metric strong{font-size:24px;font-weight:600;letter-spacing:0}.scene-action{font-size:17px;min-height:48px;border-radius:12px;background:#0071e3}.scene-feedback{font-size:13px;line-height:1.55;margin-top:16px;min-height:60px}.lesson-bottom button,.lesson-bottom button:last-child{font-size:13px;min-height:28px}.range-control label{font-size:14px}.range-control input{height:4px;margin:12px 0}.range-control input::-webkit-slider-thumb{width:20px;height:20px}.scene-mode,.quiet-control,.lighting-label select,.scene-gesture{font-size:12px;letter-spacing:0}.scene-top-tools{left:20px;right:20px;top:20px}.scene-mode{color:#a0afbd}.scene-gesture{color:#8896a4}.experience-footnote{font-size:12px;line-height:1.6;padding:20px 0}.more-experiences{padding:80px 0}.more-experiences h2{font-size:32px;line-height:1.2;font-weight:600;letter-spacing:0;margin:0 0 32px}.more-experiences a{padding:28px}.more-experiences a>span{font-size:12px}.more-experiences strong{font-size:24px}.site-footer{background:#111113;padding:64px var(--page-gutter) 24px}.footer-content,.footer-legal{max-width:1260px}.footer-content{gap:48px;padding-bottom:48px}.footer-brand img{width:112px}.footer-brand p{font-size:17px;line-height:1.47}.footer-brand>span,.footer-column,.footer-column h3,.footer-legal,.footer-legal>div{font-size:12px;line-height:1.5}.footer-column{gap:12px}.footer-column h3{font-weight:600;color:#d2d2d7}.footer-legal{padding-top:24px;color:#86868b}.footer-legal>div{gap:24px}
@media(max-width:1200px){.ys-home .hero-copy h1{font-size:64px}.product-hero h1{font-size:48px}.experience-layout{grid-template-columns:minmax(0,1fr) 320px}.lesson-panel{padding:24px}.experience-directory .pill-primary{font-size:13px}.about-grid{gap:64px}}
@media(max-width:1068px){:root{--type-super:64px;--type-section:40px;--space-section:96px}.ys-home .hero-intro{font-size:19px}.ys-home .hero-actions{gap:18px}.ys-home .hero-actions .ys-button,.ys-home .hero-actions .ys-link{font-size:14px}.product-hero h1{font-size:40px}.product-intro{font-size:19px}.product-hero .showroom{height:560px}.content-main>h1{font-size:56px}.footer-content{gap:32px}.experience-layout{gap:18px;grid-template-columns:minmax(0,1fr) 305px}.lesson-panel{padding:24px}.lesson-panel>p{font-size:15px}.lesson-panel h2{font-size:24px}.scene-top-tools .scene-mode{font-size:11px}.quiet-control,.lighting-label select{font-size:11px}.ship-feature{height:580px}}
@media(max-width:900px){.ys-home .hero{height:1080px;max-height:none;min-height:0}.ys-home .hero-copy{position:relative!important;top:auto;width:100%;padding:56px 24px 0!important;text-align:center}.ys-home .hero-copy h1{font-size:64px}.ys-home .hero .eyebrow{font-size:14px;margin-bottom:20px}.ys-home .hero-intro{margin:24px auto;max-width:410px}.ys-home .hero-actions{justify-content:center}.ys-home .raptor-local{inset:350px 0 120px!important}.ys-home .hero-bottom{bottom:45px;flex-direction:row;gap:18px}.ys-home .raptor-credit{bottom:16px!important}.raptor-parts{bottom:10px}.part-info{bottom:85px}.model-edition{top:15px;left:24px}.section-heading>p{display:block;max-width:280px}.section-heading{gap:32px}.product-next article{padding:32px}.about-grid{gap:48px}.footer-content{grid-template-columns:1.5fr 1fr 1fr}.footer-address{grid-column:1/-1}.scene-top-tools{left:14px;right:14px}.scene-top-tools .scene-mode{font-size:10px}.scene-top-tools .scene-mode i{display:none}}
@media(max-width:734px){:root{--page-gutter:24px;--type-super:48px;--type-section:32px;--space-section:80px;--space-head:32px}.ys-nav-inner{padding:0 20px;gap:16px}.ys-brand img.ys-official-logo{width:96px;height:25px}.ys-links{gap:18px;font-size:12px}.ys-links .ys-nav-about{display:none}.ys-links .ys-nav-cta{padding:6px 10px;font-size:11px}.ys-home .hero{height:990px}.ys-home .hero-copy h1{font-size:48px;line-height:1.15}.ys-home .hero-intro{font-size:17px;line-height:1.5;max-width:320px}.ys-home .hero .eyebrow{font-size:14px}.ys-home .hero-actions .ys-button,.ys-home .hero-actions .ys-link{font-size:14px}.ys-home .raptor-local{inset:320px 0 125px!important}.ys-home .hero-bottom{flex-direction:column;bottom:48px;gap:16px}.hero-caption strong{font-size:13px}.hero-caption div>span{font-size:11px}.hero-controls button{font-size:12px;padding:8px 14px}.raptor-credit{font-size:10px!important}.raptor-side-controls{right:12px}.raptor-side-controls button{font-size:11px}.raptor-parts{left:16px;right:16px;gap:5px;bottom:6px}.raptor-parts button{font-size:10px;padding:7px 9px}.intro-band p{font-size:17px;margin-bottom:24px}.intro-band h2{line-height:1.3;margin-bottom:32px}.intro-points{font-size:14px;gap:28px}.intro-points span+span:before{left:-15px}.section-heading{display:block}.section-heading>p{font-size:17px;margin:24px 0 0;max-width:340px}.section-heading h2{line-height:1.2}.ship-feature{height:560px;border-radius:24px}.ship-feature-copy{left:28px;top:32px;right:24px}.ship-feature h3{font-size:40px;line-height:1.2;margin:16px 0 24px}.ship-feature p{font-size:21px;line-height:1.4}.ship-feature-bottom{left:28px;right:28px;bottom:28px;gap:14px;font-size:12px;padding-top:20px}.product-next{grid-template-columns:1fr;gap:24px;margin-top:24px}.product-next article{min-height:450px;padding:32px;border-radius:24px}.product-next h3{font-size:28px;line-height:1.2}.product-next p{font-size:17px}.product-next .energy-card img{width:380px;right:-70px;bottom:-25px}.about-grid{grid-template-columns:1fr;gap:40px}.about-copy p{font-size:19px;line-height:1.6}.about-copy p+p{font-size:17px}.contact-section{display:flex;flex-direction:column;align-items:flex-start;gap:40px}.contact-address{min-width:0}.contact-address p{font-size:21px}.product-hero{grid-template-columns:1fr;min-height:0}.product-hero-copy{padding:28px 0 32px}.product-hero h1{font-size:40px;line-height:1.2}.product-intro{font-size:19px;max-width:380px;margin:24px 0 32px}.product-hero .showroom{height:430px;margin:0 -8px}.lesson-cards{grid-template-columns:1fr;gap:16px}.lesson-cards article{min-height:0;padding:28px}.lesson-cards h3{font-size:24px}.lesson-cards p{font-size:17px;min-height:0}.product-next-course{padding:64px 0 80px;flex-direction:column;align-items:flex-start;gap:24px}.content-main>h1{font-size:40px;line-height:1.2}.content-main>.overline{margin-top:48px}.content-lead{font-size:21px;line-height:1.5}.experience-directory{grid-template-columns:1fr;gap:24px;margin-top:48px}.experience-directory article{padding:32px}.experience-directory h2{font-size:28px}.experience-directory p{min-height:0;font-size:17px}.about-values{grid-template-columns:1fr;gap:40px;margin:64px 0 48px}.about-values h2{font-size:24px}.content-main{padding-bottom:80px}.contact-place{grid-template-columns:1fr}.contact-place>div:last-child{padding:32px}.prose h2{font-size:24px}.experience-title-row h1{font-size:24px;margin:12px 0 24px}.experience-title-row h1 span{display:none}.experience-title-row>a{font-size:12px}.step-nav{gap:6px;margin-bottom:16px}.step-nav button{font-size:12px;padding:12px 8px;gap:6px;min-height:48px;border-radius:10px}.step-nav button>span{font-size:10px}.step-nav button i{display:none}.experience-layout{grid-template-columns:1fr;gap:16px}.experience-layout>.showroom{height:390px;border-radius:20px}.lesson-panel{padding:28px;display:flex}.lesson-panel h2{font-size:28px;margin:20px 0 16px}.lesson-panel>p{font-size:17px;line-height:1.55;margin-bottom:24px}.scene-metric{flex-direction:row;margin:0 0 24px;padding:0;align-items:baseline}.scene-metric strong{font-size:24px}.scene-metric span{font-size:12px}.scene-action{width:100%;font-size:17px}.scene-feedback{min-height:44px;font-size:13px}.range-control{margin-bottom:24px}.scene-mode,.scene-top-tools .scene-mode{font-size:11px}.scene-top-tools{top:15px;left:14px;right:14px}.quiet-control,.lighting-label select{font-size:11px;padding:8px 10px}.experience-footnote{flex-direction:column;font-size:12px;gap:8px}.experience-footnote>span{white-space:normal}.more-experiences{padding:64px 0}.more-experiences h2{font-size:28px}.more-experiences>div{grid-template-columns:1fr;gap:16px}.more-experiences strong{font-size:21px}.site-footer{padding-top:48px}.footer-content{grid-template-columns:1fr 1fr;gap:32px 20px;padding-bottom:32px}.footer-brand,.footer-address{grid-column:1/-1}.footer-legal{flex-direction:column;gap:16px}.footer-legal>div{flex-wrap:wrap;gap:12px 20px;font-size:12px}.footer-column h3{margin-bottom:4px}.footer-brand p{margin-top:24px}}
.power-chain{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:17px 12px;margin:0 0 24px;background:#21314366;border-radius:12px;font-size:14px;color:#d4e9fb}.power-chain i{font-style:normal;color:#6293ba}.hydro-controls{margin:0 0 24px}.hydro-controls .range-control{margin-bottom:17px}.hydro-controls .range-control label{margin-bottom:7px}.hydro-readouts{display:grid;grid-template-columns:1fr 1fr;gap:20px 12px;padding:20px 0;border-top:1px solid #ffffff12}.hydro-readouts div{display:flex;flex-direction:column;gap:8px}.hydro-readouts span{font-size:11px;color:#94a6b9}.hydro-readouts strong{font-size:20px;font-weight:500;color:#e4edf6;font-variant-numeric:tabular-nums}.technical-note{font-size:12px;line-height:1.65;color:#8a9db0}.technical-note summary{cursor:pointer;color:#afcae3;padding:10px 0}.technical-note p{margin:12px 0}.technical-note a{color:#81bef1}#hydro-warning{font-size:12px;color:#f0c799;line-height:1.6}.experience-layout{align-items:start}.lesson-panel{min-height:550px}.experience-layout>.showroom{position:sticky;top:76px}.lesson-panel .scene-metric{margin-top:12px}.hydro-controls sub{font-size:9px}.experience-page[data-course=ship] .lesson-panel>p{font-size:15px;line-height:1.6}.experience-page[data-course=ship] .lesson-panel h2{font-size:26px}.experience-page[data-course=ship] .range-control{margin-bottom:16px}
@media(max-width:734px){.experience-layout>.showroom{position:relative;top:auto}.lesson-panel{min-height:0}.hydro-readouts strong{font-size:24px}.hydro-readouts span{font-size:12px}.experience-page[data-course=ship] .lesson-panel>p{font-size:17px}.experience-page[data-course=ship] .lesson-panel h2{font-size:28px}}
.energy-card img{mask-image:linear-gradient(180deg,transparent,#000 20%);mix-blend-mode:normal;height:260px;width:100%;object-fit:cover;object-position:center 47%;bottom:0;right:0;opacity:.9}.material-card img{height:275px;object-fit:cover;object-position:50% 55%;opacity:.95;transform:scale(1.18);transform-origin:50% 100%}.energy-card>div{position:relative;z-index:2}.product-next p{position:relative;z-index:2}.material-card .product-tag,.material-card h3{position:relative;z-index:2}
.motor-synchronous{display:flex;align-items:center;justify-content:space-between;padding:0 0 15px}.motor-synchronous strong{font-size:21px;color:#dce9f5}.motor-synchronous span{font-size:12px}.motor-synchronous+details{margin:0 0 18px}
@media(max-width:734px){.ys-home .hero{height:1060px}.ys-home .raptor-local{top:380px!important}.model-edition{top:16px}.raptor-side-controls{top:40%}}
/* Keep explanatory content, remove ornamental caption hierarchy. */
.hero-bottom{justify-content:flex-end!important}.scene-top-tools{justify-content:flex-end}.lesson-panel>h2{margin-top:0}.content-main>h1{margin-top:80px}.footer-brand>span{display:block;margin-top:24px}.ys-home .products{border-top:1px solid #ffffff10}.about-section h2,.contact-section h2{margin-top:0}
@media(max-width:734px){.ys-home .hero{height:1010px}.ys-home .hero-bottom{bottom:28px;flex-direction:row;justify-content:center!important}.ys-home .raptor-local{bottom:95px!important}.content-main>h1{margin-top:48px}}

/* Supplied company symbol; keep original raster proportions and remove white through blending. */
.ys-brand img.ys-official-logo{width:44px;height:35px;object-fit:contain;filter:grayscale(1) invert(1);mix-blend-mode:screen}
.footer-brand img{width:56px;height:44px;object-fit:contain;filter:grayscale(1) invert(1);mix-blend-mode:screen}
@media(max-width:734px){.ys-brand img.ys-official-logo{width:39px;height:31px}}

/* Source: assets/corporate.css */
:root{--site-gutter:clamp(24px,5.6vw,80px)}
.ys-wrap,.ys-nav-inner{width:min(1260px,calc(100% - var(--site-gutter)*2));max-width:1260px;margin-inline:auto}.ys-nav-inner{padding:0}.ys-links{gap:30px}.nav-toggle{display:none}.ys-links a[aria-current=page]{color:#fff}.site-section{padding-block:120px}.section-intro{display:flex;justify-content:space-between;align-items:end;gap:48px;margin-bottom:48px}.section-intro h2,.closing-cta h2{font-size:clamp(34px,3.9vw,56px);line-height:1.15;margin:0;letter-spacing:-.025em}.section-intro>p{max-width:430px;font-size:19px;line-height:1.55;color:#a1a1a6;margin:0}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.course-card{overflow:hidden;background:#151518;border-radius:24px;display:flex;flex-direction:column;border:1px solid #ffffff08}.course-card-media{aspect-ratio:16/10;position:relative;background:radial-gradient(ellipse at 50% 70%,#24303b,#101318 80%);overflow:hidden}.course-card-media a{display:block;height:100%}.course-card-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .7s ease}.course-card:hover .course-card-media img{transform:scale(1.035)}.course-card[data-course-slot=energy] .course-card-media img,.course-card[data-course-slot=materials] .course-card-media img{object-fit:contain;padding:12px}.course-card-body{padding:28px;flex:1;display:flex;flex-direction:column}.course-category{font-size:12px;color:#a1a1a6;margin:0 0 12px}.course-card h3{font-size:27px;line-height:1.2;margin:0 0 18px}.course-summary{font-size:17px;line-height:1.55;color:#a1a1a6;margin:0 0 24px}.course-topics{display:flex;gap:6px 14px;flex-wrap:wrap;list-style:none;padding:0;margin:0 0 28px;font-size:12px;color:#c3c3c8}.course-card-actions{display:flex;align-items:center;gap:20px;margin-top:auto;font-size:14px}.course-card-actions a:first-child{color:#61b1ff}.course-card-actions a:last-child{color:#b8b8bd}.course-card-actions a:hover,.upcoming-link:hover{text-decoration:underline}.course-card 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p{font-size:19px;line-height:1.6;color:#a1a1a6;max-width:430px;margin:0 0 28px}.value-stories .text-link{font-size:17px}.teaching-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}.teaching-grid article{padding-top:28px;border-top:1px solid #ffffff26}.teaching-grid h3{font-size:27px;margin:0 0 18px}.teaching-grid p{font-size:17px;line-height:1.65;color:#a1a1a6;margin:0;max-width:350px}.custom-preview{background:#101012}.workflow{list-style:none;padding:0;margin:56px 0 40px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}.workflow li{border-top:1px solid #ffffff26;padding-top:24px}.workflow li>span{font-size:13px;color:#8d8d95;font-variant-numeric:tabular-nums}.workflow h3{font-size:23px;line-height:1.3;margin:28px 0 16px}.workflow p{font-size:16px;line-height:1.65;color:#a1a1a6;margin:0}.closing-cta{padding-block:120px;text-align:center}.closing-cta p{font-size:19px;color:#a1a1a6;margin:28px 0 32px}.site-footer .footer-content,.site-footer .footer-legal{max-width:1260px}.content-main{padding-top:12px;padding-bottom:100px}.content-main>h1{font-size:clamp(44px,5.2vw,72px);line-height:1.13;letter-spacing:-.025em;margin:56px 0 32px;max-width:1050px}.content-main>.content-lead{font-size:24px;line-height:1.6;max-width:840px;margin-bottom:40px}.content-main>.course-grid{margin-top:72px}.content-section{padding-top:96px}.content-section>h2{font-size:36px;line-height:1.3;margin:0 0 40px}.service-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.service-grid article{padding:40px;border-radius:24px;background:#151518}.service-grid h3{font-size:28px;line-height:1.25;margin:0 0 20px}.service-grid p{font-size:19px;line-height:1.6;color:#a1a1a6;max-width:450px;margin:0}.delivery-note{padding:32px;border:1px solid #ffffff20;border-radius:20px;margin-top:48px}.delivery-note h3{font-size:24px;margin:0 0 14px}.delivery-note p{font-size:17px;color:#a1a1a6;margin:0;line-height:1.65}.preparation ul{list-style:none;padding:0;max-width:850px;margin-bottom:32px}.preparation li{padding:24px 0;border-bottom:1px solid #ffffff1c;display:grid;grid-template-columns:170px 1fr;gap:24px}.preparation strong{font-size:21px;font-weight:500}.preparation li span{font-size:17px;color:#a1a1a6}.company-introduction{max-width:800px}.company-introduction p{font-size:21px;line-height:1.65;color:#a1a1a6;margin:0 0 28px}.company-location{margin:96px 0 40px;padding:40px 0;border-block:1px solid #ffffff20;display:flex;justify-content:space-between;align-items:center;gap:30px}.company-location h2{font-size:28px;margin:0 0 16px}.company-location p{font-size:17px;color:#a1a1a6;margin:0}.directory-note{display:flex;justify-content:space-between;gap:40px;border-top:1px solid #ffffff1c;margin-top:48px;padding-top:28px;font-size:14px;color:#a1a1a6}.directory-note p{margin:0;max-width:680px}.directory-note a{white-space:nowrap;color:#67b5ff}.contact-layout{display:grid;grid-template-columns:minmax(0,1.6fr) 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0;color:#62b0ff;background:none;font-size:15px}.text-button:hover{text-decoration:underline}.request-result{border-top:1px solid #ffffff22;margin-top:32px;padding-top:24px}.request-result h3{font-size:21px}.request-result pre{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:15px;line-height:1.8;color:#c5c5cc}.form-feedback{min-height:24px;font-size:14px;color:#a9ceef;line-height:1.6}.contact-details{padding-top:8px}.contact-details h2{font-size:24px;line-height:1.4;margin:0 0 24px}.contact-details>p{font-size:19px;line-height:1.7;color:#a1a1a6;margin:0 0 20px}.contact-details>a{display:block;font-size:17px;line-height:1.6;margin-top:16px;color:#e4e4e9;overflow-wrap:anywhere}.contact-details #copy-feedback{display:block;font-size:13px;color:#a1a1a6}.contact-context{border-top:1px solid #ffffff20;margin-top:40px;padding-top:28px}.contact-context h3{font-size:21px}.contact-context p{font-size:17px;color:#a1a1a6;line-height:1.6}.contact-context a{font-size:15px;color:#62b0ff}.course-progress{display:inline-block;padding:8px 16px;border:1px solid #ffffff28;border-radius:30px;font-size:14px;color:#b7c9db}.supporting-copy{font-size:14px;color:#909099;line-height:1.7;margin:32px 0 40px}.scene-top-tools{justify-content:space-between}.experience-layout{position:relative}.experience-layout:fullscreen,.experience-layout.is-expanded{width:100%;max-width:none;background:#080a0e;padding:32px;height:100dvh;align-items:stretch;margin:0;overflow:auto}.experience-layout:fullscreen>.showroom,.experience-layout.is-expanded>.showroom{height:100%;min-height:380px}.experience-layout.is-expanded{position:fixed;inset:0;z-index:300}.experience-layout:fullscreen .lesson-panel,.experience-layout.is-expanded .lesson-panel{overflow-y:auto}.showroom:fullscreen{width:100vw;height:100dvh!important;margin:0!important;border-radius:0}.showroom.is-expanded{position:fixed;inset:0;width:100vw!important;height:100dvh!important;margin:0!important;z-index:300}.experience-layout .lesson-bottom{flex-wrap:wrap;gap:12px}.lesson-bottom #reset-lesson{color:#a4adb7}.course-usage{padding-block:40px 80px}.course-usage h2{font-size:36px;margin:0 0 36px}.course-usage .supporting-copy{max-width:800px}.hero .hero-intro{max-width:400px!important}
@media(max-width:1068px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section-intro{display:block}.section-intro>p{margin-top:24px}.value-stories article{gap:48px}.workflow{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}.contact-layout{gap:40px}.ys-links{gap:22px}.course-card h3{font-size:26px}.value-stories h3{font-size:28px}}
@media(max-width:734px){.ys-nav-inner{gap:12px}.nav-toggle{display:flex;align-items:center;gap:14px;border:0;background:none;color:#eee;font-size:13px;padding:12px 0 12px 20px}.nav-toggle span{font-size:20px;line-height:1}.ys-links{display:none!important;position:absolute;top:var(--ys-nav);inset-inline:0;background:#111114fa;backdrop-filter:blur(24px);padding:20px var(--site-gutter) 28px;border-bottom:1px solid #ffffff20;box-shadow:0 24px 40px #0008}.ys-header[data-menu-open=true] .ys-links{display:flex!important;flex-direction:column;align-items:stretch;gap:0}.ys-links a{padding:15px 0;font-size:21px!important;display:block!important}.ys-links .ys-nav-cta{margin-top:12px;align-self:flex-start;font-size:15px!important;padding:11px 20px!important}.site-section{padding-block:80px}.section-intro{margin-bottom:32px}.section-intro h2,.closing-cta h2{font-size:36px;line-height:1.2}.section-intro>p{font-size:17px}.course-grid{grid-template-columns:1fr;gap:20px}.course-card-media{aspect-ratio:16/10}.course-card-body{padding:26px}.course-card h3{font-size:28px}.course-card-actions{font-size:15px}.is-coming .course-card-body{min-height:0}.is-coming .course-card-media{aspect-ratio:2.3}.is-coming .course-summary{margin-bottom:8px}.is-coming .course-topics{margin-top:16px}.is-coming .upcoming-link{margin-top:24px}.value-stories{gap:64px}.value-stories article{grid-template-columns:1fr;gap:28px}.value-stories article:nth-child(even) .value-picture{order:0}.value-stories h3{font-size:28px;margin-bottom:16px}.value-stories p{font-size:17px;margin-bottom:20px}.teaching-grid{grid-template-columns:1fr;gap:32px}.teaching-grid h3{font-size:24px}.teaching-grid p{max-width:none}.workflow{gap:32px 24px}.workflow h3{font-size:21px;margin-top:20px}.workflow p{font-size:15px}.closing-cta{padding-block:80px;text-align:left}.closing-cta p{font-size:17px;line-height:1.6}.content-main>h1{font-size:40px;margin-top:40px}.content-main>.content-lead{font-size:21px;line-height:1.6}.content-main>.course-grid{margin-top:48px}.content-section{padding-top:64px}.content-section>h2,.course-usage h2{font-size:28px}.service-grid{grid-template-columns:1fr}.service-grid article{padding:28px}.service-grid h3{font-size:24px}.service-grid p{font-size:17px}.preparation li{grid-template-columns:1fr;gap:12px}.company-introduction p{font-size:19px}.company-location{margin-top:64px;display:block}.company-location .pill-secondary{margin-top:24px}.directory-note{display:block}.directory-note a{display:inline-block;margin-top:20px}.contact-layout{grid-template-columns:1fr;gap:56px;margin-top:48px}.form-row{grid-template-columns:1fr;gap:0}.request-panel>h2{font-size:28px}.contact-details{border-top:1px solid #ffffff20;padding-top:32px}.experience-layout:fullscreen,.experience-layout.is-expanded{grid-template-columns:1fr;padding:16px;display:block}.experience-layout:fullscreen>.showroom,.experience-layout.is-expanded>.showroom{height:55dvh;min-height:280px;margin-bottom:16px}.experience-layout:fullscreen .lesson-panel,.experience-layout.is-expanded .lesson-panel{overflow:visible}.course-usage{padding-bottom:48px}}
@media(prefers-reduced-motion:reduce){.course-card-media img{transition:none}}
.beam-detail-cover{margin:64px 0 0}.beam-detail-cover img{width:100%;height:auto;display:block;border-radius:24px}.beam-detail-cover figcaption{color:#92929b;font-size:13px;margin-top:16px}@media(max-width:734px){.beam-detail-cover{margin-top:40px}.beam-detail-cover img{border-radius:16px}}

.ys-header .ys-links a.ys-nav-cta{background:#fff;color:#17171c;transition:background-color .2s ease,color .2s ease}.ys-header .ys-links a.ys-nav-cta:hover,.ys-header .ys-links a.ys-nav-cta:focus-visible{background:#0071e3;color:#fff}.ys-header .ys-links a.ys-nav-cta:focus-visible{outline:2px solid #8ac6ff;outline-offset:4px}

/* About and course-customization editorial pages. */
.company-hero{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);min-height:520px;margin-top:40px;overflow:hidden;border-radius:18px;background:#111b25;color:#f5f7f9}
.company-hero-copy{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:clamp(36px,5vw,68px);min-width:0}
.company-eyebrow,.company-section-label{margin:0;color:#708398;font-size:13px;font-weight:600;letter-spacing:.06em}
.company-hero .company-eyebrow{color:#9bb5ca}
.company-hero-lead{max-width:490px;margin:28px 0 34px;font-size:clamp(21px,2.1vw,27px);line-height:1.52;font-weight:500;letter-spacing:-.012em}
.company-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px}
.company-actions .pill-primary{white-space:nowrap}
.company-inline-link{color:#a9d3f6;font-size:15px;line-height:1.4}
.company-inline-link:hover{text-decoration:underline}
.company-hero figure{position:relative;min-width:0;margin:0;overflow:hidden;background:#17232c}
.company-hero figure:after{content:"";position:absolute;inset:auto 0 0;height:95px;pointer-events:none;background:linear-gradient(transparent,#0009)}
.company-hero figure img{display:block;width:100%;height:100%;object-fit:cover}
.company-about-hero figure img{object-position:56% center}
.company-custom-hero figure img{object-position:55% center}
.company-hero figcaption{position:absolute;z-index:1;right:20px;bottom:17px;left:20px;color:#f4f5f6;font-size:12px;line-height:1.5;text-align:right;text-shadow:0 1px 5px #000a}
.company-section{padding-top:108px}
.company-section-head{display:grid;grid-template-columns:minmax(180px,.42fr) minmax(0,1fr);gap:40px;border-top:1px solid #cdd3d9;padding-top:24px}
.company-section-label{padding-top:8px}
.company-section-head h2,.company-final h2{font-size:clamp(32px,3.3vw,46px);line-height:1.23;letter-spacing:-.022em;font-weight:600;margin:0 0 23px}
.company-section-head p:not(.company-section-label){max-width:730px;color:#626970;font-size:19px;line-height:1.7;margin:0}
.company-principles,.company-question-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:44px}
.company-principles article,.company-question-grid article{padding:32px 30px 36px;background:#fff;border:1px solid #e2e5e9;border-radius:12px;min-width:0}
.company-principles article>span,.company-question-grid article>span{color:#6a8296;font-size:12px;font-weight:600;letter-spacing:.05em}
.company-principles h3,.company-question-grid h3{font-size:25px;line-height:1.28;margin:46px 0 14px;letter-spacing:-.015em}
.company-principles p,.company-question-grid p{color:#626970;font-size:16px;line-height:1.65;margin:0}
.company-course-links{margin-top:42px;border-top:1px solid #cdd3d9}
.company-course-links a{display:grid;grid-template-columns:minmax(150px,.42fr) minmax(0,1fr) auto;align-items:center;gap:40px;padding:31px 8px;border-bottom:1px solid #cdd3d9;transition:background .2s ease,padding .2s ease}
.company-course-links a:hover{background:#e9edf0;padding-inline:18px}
.company-course-links a>span:first-child{font-size:14px;color:#69747e}
.company-course-links strong{font-size:25px;font-weight:600;line-height:1.25}
.company-course-action{font-size:14px;color:#0071e3;white-space:nowrap}
.company-final{display:flex;justify-content:space-between;align-items:end;gap:32px;padding:72px clamp(30px,5vw,64px);margin-top:108px;background:#e8eef3;border-radius:14px}
.company-final h2{margin:24px 0 18px}
.company-final p:last-child{margin:0;color:#626970;font-size:17px;line-height:1.6}
.company-final .pill-primary{white-space:nowrap}
.company-process .workflow{margin-top:46px;margin-bottom:0;gap:22px}
.company-process .workflow li{padding:26px 22px 0 0;border-color:#cdd3d9}
.company-process .workflow h3{margin:35px 0 14px;font-size:21px}
.company-process .workflow p{font-size:16px}
.company-scope-note{margin:36px 0 0;padding:24px 28px;background:#e8eef3;border-radius:10px;font-size:15px;line-height:1.65;color:#4e5e6b}
.company-preparation-list{list-style:none;margin:44px 0 0;padding:0;border-top:1px solid #cdd3d9}
.company-preparation-list li{display:grid;grid-template-columns:minmax(150px,.42fr) minmax(0,1fr);gap:40px;border-bottom:1px solid #cdd3d9;padding:23px 8px}
.company-preparation-list span{font-size:20px;font-weight:600}
.company-preparation-list p{font-size:17px;line-height:1.65;color:#626970;margin:0}
.company-end-action{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-top:42px}
.company-end-action p{font-size:22px;font-weight:600;margin:0}
@media(max-width:900px){
 .company-hero{grid-template-columns:1fr 1fr;min-height:440px}
 .company-hero-copy{padding:34px}
 .company-hero-lead{font-size:21px}
 .company-actions{gap:18px}
 .company-principles,.company-question-grid{gap:12px}
 .company-principles article,.company-question-grid article{padding:24px}
 .company-principles h3,.company-question-grid h3{font-size:22px}
 .company-process .workflow{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media(max-width:734px){
 .company-hero{grid-template-columns:1fr;min-height:0;margin-top:28px;border-radius:12px}
 .company-hero-copy{padding:36px 28px 40px}
 .company-hero-lead{font-size:21px;margin:20px 0 28px}
 .company-actions{align-items:flex-start;flex-direction:column;gap:22px}
 .company-hero figure{height:auto;aspect-ratio:4/3}
 .company-hero figcaption{font-size:11px}
 .company-section{padding-top:76px}
 .company-section-head{grid-template-columns:1fr;gap:23px}
 .company-section-label{padding-top:0}
 .company-section-head h2,.company-final h2{font-size:31px;margin-bottom:18px}
 .company-section-head p:not(.company-section-label){font-size:17px}
 .company-principles,.company-question-grid{grid-template-columns:1fr;gap:12px;margin-top:30px}
 .company-principles article,.company-question-grid article{padding:24px 26px 28px}
 .company-principles h3,.company-question-grid h3{margin:24px 0 12px}
 .company-course-links{margin-top:30px}
 .company-course-links a{grid-template-columns:1fr auto;gap:6px 12px;padding:21px 2px}
 .company-course-links a>span:first-child{grid-column:1/-1}
 .company-course-links strong{font-size:21px}
 .company-course-action{font-size:12px}
 .company-final{display:block;margin-top:76px;padding:36px 28px}
 .company-final .pill-primary{display:inline-flex;margin-top:28px}
 .company-process .workflow{margin-top:30px}
 .company-process .workflow li{padding:20px 8px 0 0}
 .company-process .workflow h3{margin:23px 0 10px;font-size:19px}
 .company-scope-note{padding:20px;margin-top:28px}
 .company-preparation-list{margin-top:30px}
 .company-preparation-list li{display:block;padding:20px 2px}
 .company-preparation-list span{font-size:19px}
 .company-preparation-list p{font-size:16px;margin-top:9px}
 .company-end-action{display:block;margin-top:30px}
 .company-end-action p{font-size:20px;margin-bottom:22px}
}

/* Source: assets/global-nav.css */
/* Dark base #161617 sampled from Apple globalheader.css; transparency increased by 10 percentage points. */
:root { --ys-nav: 48px; }
.ys-header {
  position: sticky;
  top: 0;
  z-index: 700;
  height: var(--ys-nav);
  color: #f5f5f7;
  background: rgba(22, 22, 23, .86) !important;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  -webkit-backdrop-filter: saturate(180%) blur(22px);
  backdrop-filter: saturate(180%) blur(22px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .08);
}
.ys-header .ys-nav-inner {
  box-sizing: border-box;
  width: min(1260px, calc(100% - var(--site-gutter)*2));
  max-width: 1260px;
  height: 100%;
  margin-inline: auto;
  padding: 0;
  gap: clamp(28px, 5vw, 86px);
}
.ys-header .ys-brand { min-width: 0; opacity: .98; }
.ys-header .ys-brand img.ys-official-logo { display: block; width: 34px; height: 27px; object-fit: contain; }
.ys-header .ys-links { flex: 0 1 auto; margin-left: auto; display: flex; justify-content: flex-end; align-items: center; gap: 30px; font-size: 12px; font-weight: 450; letter-spacing: .025em; }
.ys-header .ys-links a { flex: 0 0 auto; color: rgba(245, 245, 247, .74); line-height: 1; white-space: nowrap; transition: color .18s ease, border-color .18s ease, background-color .18s ease; }
.ys-header .ys-links a:hover, .ys-header .ys-links a[aria-current="page"] { color: #fff; }
.ys-header .ys-links a.ys-nav-cta { padding: 0; border: 0; border-radius: 0; background: transparent; color: rgba(245, 245, 247, .74); font-size: inherit; }
.ys-header .ys-links a.ys-nav-cta:hover, .ys-header .ys-links a.ys-nav-cta:focus-visible { background: transparent; color: white; }
.ys-header .ys-links a.ys-nav-login { display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 8px 13px; margin-left: 4px; color: #f7f8fb; border: 1px solid rgba(255, 255, 255, .37); border-radius: 999px; background: rgba(255, 255, 255, .08); }
.ys-header .ys-links a.ys-nav-login:hover, .ys-header .ys-links a.ys-nav-login[aria-current="page"] { border-color: rgba(255, 255, 255, .8); background: rgba(255, 255, 255, .2); }
.ys-nav-mobile-actions { display: none; }
@media (max-width: 734px) {
  :root { --ys-nav: 48px; }
  .ys-header .ys-nav-inner { width: calc(100% - 40px); gap: 12px; }
  .ys-header .ys-brand img.ys-official-logo { width: 30px; height: 24px; }
  .ys-nav-mobile-actions { display: flex; align-items: center; gap: 20px; margin-left: auto; }
  .ys-header .ys-login-mobile { display: inline-flex; align-items: center; min-height: 44px; color: rgba(245,245,247,.86); font-size: 12px; white-space: nowrap; }
  .ys-header .nav-toggle { display: inline-flex; align-items: center; gap: 9px; padding: 10px 0; color: #f5f5f7; font-size: 12px; }
  .ys-header .nav-toggle span { font-size: 20px; }
  .ys-header .ys-links { display: none !important; position: absolute; top: var(--ys-nav); inset-inline: 0; margin: 0; padding: 14px 20px 22px; border-bottom: 1px solid rgba(255,255,255,.14); background: rgba(25,26,29,.92); -webkit-backdrop-filter: saturate(180%) blur(25px); backdrop-filter: saturate(180%) blur(25px); box-shadow: 0 25px 45px rgba(0,0,0,.22); }
  .ys-header[data-menu-open="true"] .ys-links { display: flex !important; flex-direction: column; align-items: stretch; gap: 0; }
  .ys-header .ys-links a, .ys-header .ys-links a.ys-nav-cta { display: block !important; padding: 14px 0 !important; font-size: 17px !important; }
  .ys-header .ys-links a.ys-nav-login { display: none !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .ys-header, .ys-header .ys-links { background: #202126 !important; -webkit-backdrop-filter: none; backdrop-filter: none; }
}

/* Source: assets/content-safe-rails.css */
/* Public-page alignment repair, based on the 2026-10-09 production snapshot.
   Keep full-bleed scenes; align reading and control surfaces to the site shell. */
.ys-home .home-banner {
  --banner-gutter: var(--content-inset);
}

@media (min-width: 901px) {
  .ys-home .home-banner .engine-panel .raptor-local .raptor-mode-switch,
  .ys-home .home-banner .engine-panel .raptor-local .principle-panel {
    left: auto;
    right: var(--content-inset);
    width: 242px;
  }
}
@media (min-width: 901px) and (max-width: 1150px) {
  .ys-home .home-banner .engine-panel .raptor-local .raptor-mode-switch,
  .ys-home .home-banner .engine-panel .raptor-local .principle-panel {
    width: 210px;
  }
}

/* Use the existing stacked engine layout throughout its 900px breakpoint. */
@media (min-width: 741px) and (max-width: 900px) {
  .ys-home .home-banner .engine-panel {
    position: relative;
    height: auto;
    min-height: 0;
    max-height: none;
    padding-bottom: 85px;
  }
  .ys-home .home-banner .engine-panel .hero {
    height: auto !important;
    min-height: 0 !important;
    max-height: none;
  }
  .ys-home .home-banner .engine-panel .hero-layout {
    display: block;
    box-sizing: border-box;
    width: 100%;
    padding: 340px var(--content-inset) 0;
  }
  .ys-home .home-banner .engine-panel .hero-copy {
    top: 36px !important;
    transform: none;
    width: calc(100% - var(--content-inset) * 2) !important;
  }
  .ys-home .home-banner .engine-panel .hero .raptor-local,
  .ys-home .home-banner .engine-panel .hero .raptor-local:not([data-display=structure]) {
    position: relative !important;
    inset: auto !important;
    width: 100% !important;
    height: auto !important;
  }
}

@media (max-width: 740px) {
  .ys-home .home-banner {
    --banner-copy-width: calc(100% - var(--content-inset) * 2);
  }
}

/* Course explanations share the header/footer's 1260px content measure. */
.course-value,
.gear-page .lab-wrap,
.materials-page .material-wrap {
  box-sizing: border-box;
  width: min(1260px, calc(100% - var(--site-gutter) * 2));
  max-width: 1260px;
  margin-inline: auto;
}
.gear-page .journey-intro {
  padding-inline: var(--content-inset);
  overflow-x: hidden;
}
@media (max-width: 780px) {
  .gear-page .next-action {
    left: var(--content-inset);
    right: var(--content-inset);
  }
}

@media (max-width: 900px) {
  .marine-page .marine-intro,
  .marine-page .marine-console,
  .marine-page .marine-bottom {
    margin-inline: var(--marine-safe);
  }
}

/* Wind: preserve the terrain canvas and use one rail for all fixed chrome. */
.wind-course {
  --wind-console-width: 282px;
  --wind-panel-gap: 24px;
}
.wind-course .twin-workspace {
  overflow-x: clip;
}
.wind-course .twin-header,
.wind-course .twin-tabs,
.wind-course .analysis-panel,
.wind-course .maintenance-panel,
.wind-course .course-story,
.wind-course .model-notes {
  padding-inline: var(--content-inset);
}
.wind-course .scene-caption,
.wind-course .scene-power,
.wind-course .scene-foot,
.wind-course .machine-actions,
.wind-course .machine-sequence {
  left: var(--content-inset);
}
.wind-course .twin-console {
  right: var(--content-inset);
  width: var(--wind-console-width);
}
.wind-course .summary-grid {
  left: var(--content-inset);
  right: calc(var(--content-inset) + var(--wind-console-width) + var(--wind-panel-gap));
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.wind-course .scene-tools,
.wind-course .scene-foot,
.wind-course .wake-legend {
  right: calc(var(--content-inset) + var(--wind-console-width) + var(--wind-panel-gap));
}
.wind-course .twin-scene.is-machine .scene-tools {
  right: var(--content-inset);
}
.wind-course .summary-grid .selected-metrics strong {
  line-height: 1.2;
}
@media (min-width: 1151px) {
  .wind-course .summary-grid .selected-metrics { margin: 16px 0 12px; }
}
@media (min-width: 1151px) and (max-width: 1599px) {
  .wind-course .summary-grid svg { height: 80px; }
}

@media (min-width: 1600px) {
  .wind-course { --wind-console-width: 300px; }
}
@media (min-width: 801px) and (max-width: 1050px) {
  .wind-course { --wind-console-width: 250px; --wind-panel-gap: 16px; }
}
/* Stack the compact summary's contents before they can collide with the console. */
@media (min-width: 801px) and (max-width: 1150px) {
  .wind-course .summary-grid { height: 194px; gap: 8px; }
  .wind-course .summary-grid > article { padding: 12px 10px; }
  .wind-course .capture { flex-direction: column; align-items: flex-start; gap: 6px; margin-top: 10px; }
  .wind-course .capacity-ring { width: 48px; height: 48px; }
  .wind-course .capture strong { font-size: 18px; }
  .wind-course .summary-grid .card-title { flex-wrap: wrap; gap: 5px; }
  .wind-course .selected-metrics { grid-template-columns: 1fr; gap: 6px; margin: 12px 0; }
  .wind-course .selected-metrics > div { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px; }
  .wind-course .selected-metrics strong { font-size: 17px; line-height: 1.2; }
  .wind-course .selected-metrics small { margin-top: 0; }
  .wind-course .scene-foot { bottom: 234px; }
  .wind-course .wake-legend { bottom: 230px; }
}
@media (max-width: 800px) {
  .wind-course .twin-console {
    right: auto;
    width: calc(100% - var(--content-inset) * 2);
    margin-inline: var(--content-inset);
  }
  .wind-course .summary-grid {
    left: auto;
    right: auto;
    padding-inline: var(--content-inset);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .wind-course .scene-tools,
  .wind-course .scene-foot,
  .wind-course .wake-legend,
  .wind-course .machine-actions,
  .wind-course .machine-sequence {
    right: var(--content-inset);
  }
  .wind-course .scene-tools {
    max-width: calc(100% - var(--content-inset) * 2);
  }
}
@media (max-width: 360px) {
  .wind-course .capture { flex-wrap: wrap; }
}

/* Source: assets/fourier-lab.css */
.fourier-page{--fl-bg:#080e18;--fl-panel:#101926;--fl-line:rgba(179,205,238,.13);--fl-muted:#94a8bf;--fl-text:#ecf3fa;--fl-cyan:#71e4ed;--fl-amber:#f5bd79;background:var(--fl-bg);color:var(--fl-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif}.fourier-page *{box-sizing:border-box}.fourier-page [hidden]{display:none!important}.fl-main{width:min(1260px,calc(100% - var(--site-gutter,32px)*2));margin:0 auto;padding-bottom:64px}.fl-main button,.fl-main input,.fl-main select{font:inherit}.fl-main button{border:1px solid var(--fl-line);border-radius:8px;background:rgba(255,255,255,.035);color:var(--fl-text);cursor:pointer;transition:background .2s,border-color .2s,transform .2s;min-height:36px;padding:7px 11px}.fl-main button:hover{background:rgba(117,215,235,.1);border-color:rgba(142,215,227,.45)}.fl-main button:disabled{cursor:default;opacity:.45}.fl-main button:focus-visible,.fl-main a:focus-visible,.fl-main input:focus-visible,.fl-main summary:focus-visible{outline:2px solid var(--fl-cyan);outline-offset:4px}.fl-main a{color:inherit;text-decoration:none}.fl-topline{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;font-size:12px;color:var(--fl-muted);border-bottom:1px solid var(--fl-line)}.fl-topline a:hover{color:var(--fl-cyan)}.fl-heading{padding:25px 0 23px;display:flex;align-items:center;justify-content:space-between;gap:24px}.fl-eyebrow{font-size:10px;letter-spacing:2.2px;font-weight:600;color:var(--fl-cyan);margin:0 0 9px}.fl-heading h1{font-size:clamp(25px,2.6vw,38px);letter-spacing:-1px;margin:0;font-weight:600;line-height:1.3}.fl-heading p:last-child{font-size:13px;line-height:1.7;color:var(--fl-muted);margin:11px 0 0}.fl-mode{display:flex;padding:4px;background:#121c29;border:1px solid var(--fl-line);border-radius:12px;flex:none;gap:3px}.fl-mode button{border:0;background:none;color:var(--fl-muted);padding:10px 16px;font-size:13px;white-space:nowrap}.fl-mode button[aria-pressed=true]{background:#263746;color:#fff;box-shadow:0 2px 6px #0003}.fl-mode span{font-size:10px;margin-left:7px;color:var(--fl-cyan)}.fl-workspace{display:grid;grid-template-columns:minmax(0,1fr)310px;gap:18px}.fl-instrument{min-width:0;overflow:hidden;border:1px solid var(--fl-line);background:radial-gradient(ellipse at 20% 60%,#13283a99,transparent 65%),#090f18;border-radius:16px}.fl-instrument-top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 0;gap:12px}.fl-instrument-top>div{display:flex;align-items:center;gap:8px}.fl-instrument-top b{font-size:13px;font-weight:500}.fl-live-dot{width:6px;height:6px;background:var(--fl-cyan);border-radius:50%;box-shadow:0 0 10px #71e4ed66}.fl-live-label{color:var(--fl-muted);font-size:10px;border-left:1px solid var(--fl-line);padding-left:8px;margin-left:4px}.fl-instrument-top button{font-size:11px;min-height:30px;padding:5px 9px;color:var(--fl-muted);border-color:transparent;background:transparent}.fl-scope-wrap{position:relative;height:285px;margin-top:6px}.fl-scope-wrap canvas{width:100%;height:100%;display:block}.fl-scope-label{position:absolute;left:24px;right:24px;top:9px;display:grid;grid-template-columns:36% 64%;font-size:10px;color:#738ba3;pointer-events:none}.fl-scope-label>span:last-child{text-align:right}.fl-scope-legend{position:absolute;right:24px;bottom:8px;display:flex;gap:15px;align-items:center;font-size:10px;color:var(--fl-muted)}.fl-scope-legend span{display:flex;gap:5px;align-items:center}.fl-scope-legend i{width:13px;height:2px;background:var(--fl-cyan)}.fl-scope-legend #fl-target-legend i{background:repeating-linear-gradient(90deg,#d6e5f5 0 3px,transparent 3px 5px)}.fl-scope-legend #fl-selected-legend i{background:var(--fl-amber)}.fl-frequency{padding:11px 24px 14px;border-top:1px solid var(--fl-line)}.fl-frequency-title{display:flex;justify-content:space-between;gap:12px;color:var(--fl-muted);font-size:10px}.fl-frequency-title b{color:var(--fl-cyan);margin-left:4px}.fl-spectrum{height:85px;display:grid;grid-template-columns:repeat(9,minmax(0,1fr));align-items:stretch;gap:8px;margin-top:7px}.fl-spectrum button{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;padding:4px 0 0;gap:6px;border-radius:6px;background:transparent;border-color:transparent;min-width:0;min-height:0}.fl-spectrum button[aria-pressed=true]{background:#f5bd790b;border-color:#f5bd7944}.fl-spectrum button .fl-bar{display:block;width:min(15px,55%);height:calc(53px*var(--amp));min-height:2px;background:linear-gradient(0deg,#398298,#81e6ed);border-radius:3px 3px 0 0;transition:height .12s,opacity .2s;opacity:var(--enabled)}.fl-spectrum button[aria-pressed=true] .fl-bar{background:linear-gradient(0deg,#a8774e,#f5c78e);box-shadow:0 0 13px #f5bd791a}.fl-spectrum button span:last-child{height:16px;font-size:10px;color:var(--fl-muted)}.fl-spectrum button[aria-pressed=true] span:last-child{color:var(--fl-amber)}.fl-spectrum-label{display:flex;justify-content:space-between;gap:8px;font-size:9px;color:#70869c;margin-top:5px}.fl-spectrum-label b{font-weight:500;color:var(--fl-cyan)}.fl-instrument-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid var(--fl-line);padding:9px 20px;font-size:10px;color:var(--fl-muted)}.fl-instrument-bottom b{font-weight:500;color:#c4d7e5;font-variant-numeric:tabular-nums}.fl-instrument-bottom button{font-size:10px;min-height:26px;border-color:transparent;background:transparent;padding:3px 0}.fl-instrument-bottom i{display:inline-block;width:4px;height:4px;background:var(--fl-cyan);border-radius:50%;margin-right:7px}.fl-console{border:1px solid var(--fl-line);border-radius:16px;background:linear-gradient(155deg,#152131,#0f1723);padding:17px 20px;min-width:0}.fl-preset-row{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}.fl-preset-row button{min-height:32px;font-size:11px;padding:6px 3px;color:var(--fl-muted)}.fl-preset-row button[aria-pressed=true]{background:#2c4353;color:#d8f8ff;border-color:#6595a666}.fl-edit-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:23px 0}.fl-edit-head .fl-eyebrow{font-size:9px;color:#d5ad7f;letter-spacing:1.4px;margin-bottom:7px}.fl-edit-head h2{font-size:17px;font-weight:500;margin:0}.fl-switch{display:flex;align-items:center;gap:5px;font-size:10px;color:var(--fl-muted);white-space:nowrap}.fl-switch input{accent-color:var(--fl-cyan);width:15px;height:15px;cursor:pointer}.fl-control{margin-bottom:18px}.fl-control>label{font-size:12px;display:flex;justify-content:space-between;margin-bottom:9px}.fl-control>label span{font-size:10px;color:var(--fl-muted)}.fl-control-inputs{display:flex;gap:13px;align-items:center}.fl-main 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var(--fl-line);margin-top:20px;padding-top:15px}.fl-audio-title{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px}.fl-audio-title button{font-size:11px;border-radius:20px;padding:5px 10px;min-height:31px}.fl-audio-title button[aria-pressed=true]{color:var(--fl-cyan);border-color:#71e4ed88;background:#71e4ed11}.fl-audio-settings{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:15px}.fl-audio-settings label{font-size:10px;color:var(--fl-muted)}.fl-audio-settings output{float:right;font-size:10px;color:#d7e4f0}.fl-audio-settings input{display:block;margin-top:8px!important;height:12px!important}.fl-audio p{font-size:10px;line-height:1.65;color:#7d94ab;margin:12px 0 0}.fl-bottom-note{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0 24px;color:var(--fl-muted);font-size:12px}.fl-bottom-note p{margin:0;line-height:1.8;max-width:710px}.fl-bottom-note>div{display:flex;gap:14px;flex:none}.fl-bottom-note button{color:var(--fl-muted);background:none;border:0;padding:0;min-height:30px;font-size:11px}.fl-explain{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;border-top:1px solid var(--fl-line);padding:28px 0}.fl-explain article{min-width:0}.fl-explain article>span{font-size:10px;letter-spacing:.7px;color:var(--fl-cyan)}.fl-explain h2{font-size:16px;font-weight:500;margin:12px 0}.fl-explain p{font-size:12px;line-height:1.9;color:var(--fl-muted);margin:0}.fl-method{border-block:1px solid var(--fl-line);color:var(--fl-muted);font-size:12px}.fl-method summary{cursor:pointer;padding:20px 0;list-style:none;display:flex;justify-content:space-between}.fl-method summary::-webkit-details-marker{display:none}.fl-method summary span{color:var(--fl-cyan)}.fl-method>div{padding:4px 0 22px;max-width:860px}.fl-method h2{font-size:18px;color:var(--fl-text);font-weight:500}.fl-method p{line-height:1.9}.fl-method-formula{font-family:ui-monospace,SFMono-Regular,monospace;color:var(--fl-cyan);font-size:16px}.fl-sources{display:flex;flex-wrap:wrap;gap:20px;margin-top:20px}.fl-sources a{color:var(--fl-cyan)}.fl-challenge{display:grid;grid-template-columns:1fr auto;gap:12px 32px;border:1px solid #72d1dc30;background:linear-gradient(105deg,#15313f,#111b29);border-radius:14px;padding:19px 22px;margin-bottom:18px}.fl-challenge-copy>span{font-size:10px;letter-spacing:1px;color:var(--fl-cyan)}.fl-challenge h2{font-size:20px;margin:7px 0;font-weight:500}.fl-challenge-copy p{font-size:12px;line-height:1.8;color:#adc0d0;margin:0;max-width:700px}.fl-challenge-actions{display:flex;align-items:center;gap:26px}.fl-metric{text-align:right;min-width:112px;display:flex;flex-direction:column;gap:4px}.fl-metric>span,.fl-metric small{font-size:10px;color:var(--fl-muted)}.fl-metric strong{font-size:26px;font-weight:500;font-variant-numeric:tabular-nums;color:var(--fl-cyan)}.fl-main .fl-primary{background:#b9edf0;color:#112a36;border:0;font-size:12px;padding:10px 15px;min-height:42px}.fl-main .fl-primary:hover{background:#d9faff}.fl-hint-line{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:6px 20px;border-top:1px solid var(--fl-line);padding-top:7px}.fl-hint-line button{border:0;background:none;color:#8fbdce;font-size:11px;padding:3px 0;min-height:24px}.fl-hint-line p{width:100%;font-size:12px;line-height:1.8;color:#c4d9e5;margin:4px 0}.fl-challenge #fl-feedback{grid-column:1/-1;font-size:12px;line-height:1.8;color:var(--fl-amber)}.fl-challenge #fl-feedback:empty{display:none}.fl-toast{position:fixed;z-index:100;left:50%;bottom:24px;transform:translateX(-50%);background:#214451;border:1px solid #73c6d555;color:#eaf7fb;padding:12px 20px;border-radius:10px;font-size:12px;max-width:calc(100% - 32px);box-shadow:0 8px 40px #0008}.fourier-page .site-footer{margin-top:0}.fl-preset-row[data-locked=true]{opacity:.6}
@media(min-width:1450px){.fl-scope-wrap{height:325px}.fl-frequency{padding-block:15px}.fl-spectrum{height:93px}.fl-spectrum button .fl-bar{height:calc(61px*var(--amp))}.fl-console{padding:22px 24px}.fl-edit-head{margin-block:28px}.fl-control{margin-bottom:22px}.fl-audio{margin-top:24px}}
@media(max-width:1000px){.fl-workspace{grid-template-columns:minmax(0,1fr)285px;gap:14px}.fl-console{padding:16px}.fl-heading{align-items:flex-start}.fl-scope-wrap{height:275px}.fl-wide-label{display:none}.fl-challenge{gap:16px}.fl-challenge-actions{gap:12px;flex-direction:column;align-items:flex-end}.fl-explain{gap:20px}}
@media(max-width:760px){.fl-main{width:calc(100% - var(--site-gutter,20px)*2);padding-bottom:36px}.fl-topline{min-height:43px;font-size:10px;gap:8px}.fl-topline>span{display:none}.fl-heading{padding:19px 0 17px;display:block}.fl-heading .fl-eyebrow{font-size:9px;margin-bottom:8px}.fl-heading h1{font-size:26px;letter-spacing:-.7px}.fl-heading p:last-child{font-size:11px;margin-top:8px}.fl-mode{width:max-content;margin-top:16px;padding:3px;border-radius:10px}.fl-mode button{padding:7px 15px;min-height:32px;font-size:11px}.fl-workspace{grid-template-columns:1fr;gap:12px}.fl-instrument{border-radius:12px}.fl-instrument-top{padding:11px 13px 0}.fl-instrument-top b{font-size:11px}.fl-live-label{font-size:9px}.fl-scope-wrap{height:220px;margin-top:2px}.fl-scope-label{left:14px;right:14px;font-size:8px;top:9px;grid-template-columns:32% 68%}.fl-scope-legend{font-size:9px;right:14px;gap:11px;bottom:3px}.fl-frequency{padding:10px 14px}.fl-frequency-title{font-size:9px}.fl-spectrum{height:62px;gap:4px}.fl-spectrum button .fl-bar{height:calc(36px*var(--amp));width:9px}.fl-spectrum button{gap:4px}.fl-spectrum button span:last-child{font-size:9px;height:12px}.fl-spectrum-label{font-size:8px}.fl-instrument-bottom{padding:8px 13px;font-size:9px}.fl-instrument-bottom button{font-size:9px}.fl-console{padding:16px;border-radius:12px;display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.fl-preset-row{grid-column:1/-1}.fl-edit-head{grid-column:1/-1;margin:17px 0}.fl-edit-head h2{font-size:16px}.fl-control{margin-bottom:12px;min-width:0}.fl-control>label{font-size:11px}.fl-control>label span{font-size:9px}.fl-control-inputs{gap:7px}.fl-main input[type=number],.fl-unit-input{width:51px}.fl-main input[type=number]{font-size:11px;height:29px}.fl-range-ticks{padding-right:58px;font-size:8px}.fl-unit-input>span{right:6px}.fl-selected-formula{grid-column:1/-1;font-size:11px}.fl-audio{grid-column:1/-1;margin-top:14px;padding-top:12px}.fl-audio-settings{margin-top:12px}.fl-audio p{font-size:9px;margin-top:9px}.fl-bottom-note{display:block;padding:12px 0 22px;font-size:11px}.fl-bottom-note>div{margin-top:10px}.fl-explain{grid-template-columns:1fr;gap:19px;padding:22px 0}.fl-explain h2{margin:6px 0;font-size:15px}.fl-explain p{font-size:11px}.fl-method{font-size:11px}.fl-method-formula{font-size:12px}.fl-challenge{padding:15px;grid-template-columns:1fr;gap:12px;border-radius:12px}.fl-challenge h2{font-size:18px}.fl-challenge-copy p{font-size:11px}.fl-challenge-actions{flex-direction:row;justify-content:space-between;align-items:center}.fl-metric{text-align:left;min-width:0}.fl-metric strong{font-size:23px}.fl-metric>span,.fl-metric small{font-size:9px}.fl-main .fl-primary{font-size:11px;padding:10px 12px}.fl-hint-line{gap:5px 15px}.fl-hint-line p{font-size:11px}}
@media(prefers-reduced-motion:reduce){.fl-main *{transition:none!important;scroll-behavior:auto!important}}
/* Preserve the shared navigation geometry, with the symbol visible on this dark scene. */
.fourier-page .ys-official-logo,.fourier-page .footer-logo img{filter:brightness(0) invert(1)}
.fourier-page>.skip-content{position:fixed;z-index:500;left:16px;top:8px;transform:translateY(-180%);padding:10px 16px;background:#d9faff;color:#102a37;border-radius:7px;text-decoration:none}
.fourier-page>.skip-content:focus{transform:translateY(0)}
body.fourier-page .ys-header .ys-brand .ys-official-logo,
body.fourier-page .site-footer .footer-logo img{filter:brightness(0) invert(1)!important}
@media(max-width:760px){
 .fl-workspace{display:block}
 .fl-console{margin-top:12px}
 .fl-instrument-top{padding:8px 13px 0}
 .fl-instrument-top button{height:28px;min-height:28px;line-height:16px}
 .fl-scope-wrap{height:180px;margin-top:0}
 .fl-frequency{padding:8px 14px 4px}
 .fl-frequency-title{line-height:11px}
 .fl-spectrum{height:44px;margin-top:6px}
 .fl-spectrum button{gap:3px;padding-top:2px}
 .fl-spectrum button .fl-bar{height:calc(26px*var(--amp))}
 .fl-spectrum button span:last-child{height:11px;line-height:11px}
 .fl-spectrum-label{line-height:10px;margin-top:3px}
 .fl-instrument-bottom{padding:4px 13px;line-height:16px}
 .fl-instrument-bottom button{height:24px;min-height:24px;line-height:16px}
}
@media(max-width:760px) and (min-height:680px){
 .fl-instrument{position:sticky;top:58px;z-index:5;box-shadow:0 12px 22px #080e1866}
}
@media(max-width:760px) and (max-height:679px){
 .fl-instrument{position:relative;top:auto}
 .fl-scope-wrap{height:165px}
}
.fl-mobile-challenge{display:none}.fl-challenge{scroll-margin-top:72px}
@media(max-width:760px){
 .fl-mobile-challenge{display:grid;grid-template-columns:1fr auto;gap:9px;align-items:center;grid-column:1/-1;padding:12px 0 0;margin-top:12px;border-top:1px solid var(--fl-line)}
 .fl-mobile-challenge>div>span{font-size:9px;color:#a9c5d0;line-height:1.6;display:block}
 .fl-mobile-challenge>div>p{font-size:10px;color:var(--fl-cyan);margin:5px 0 0;line-height:1.6;font-variant-numeric:tabular-nums}
 .fl-mobile-challenge .fl-primary{font-size:10px;padding:9px 10px;min-height:38px}
 .fl-mobile-challenge>p{grid-column:1/-1;color:var(--fl-amber);font-size:10px;line-height:1.8;margin:0}
 .fl-mobile-challenge>p:empty{display:none}
}

/* Source: assets/course-learning.css */
.course-learning{--cl-text:#dbe6eb;--cl-muted:#92a6b1;--cl-line:rgba(157,188,207,.18);width:min(1260px,calc(100% - var(--site-gutter,32px)*2));margin:52px auto 64px;color:var(--cl-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:14px;line-height:1.65;text-align:left;position:relative;z-index:1}.course-learning *{box-sizing:border-box}.course-learning h2,.course-learning h3,.course-learning p{margin-top:0}.course-learning a{color:#99d7ec;text-decoration:none}.cl-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:20px}.cl-heading h2{font-size:23px;letter-spacing:-.04em;margin:0}.cl-eyebrow{font-size:11px;color:var(--cl-muted);letter-spacing:.12em;margin-bottom:6px!important}.cl-heading>a{font-size:12px;white-space:nowrap}.cl-details{border:1px solid var(--cl-line);border-radius:16px;background:rgba(15,28,39,.65);margin:12px 0;overflow:hidden}.cl-details>summary{cursor:pointer;list-style:none;padding:20px 24px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:20px}.cl-details>summary::-webkit-details-marker{display:none}.cl-details>summary:after{content:'＋';font-weight:400;color:var(--cl-muted)}.cl-details[open]>summary:after{content:'−'}.cl-details>summary small{font-size:12px;font-weight:400;color:var(--cl-muted);margin-left:auto}.cl-details-body{padding:0 24px 24px}.cl-guide-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:28px}.cl-guide-grid h3{font-size:15px;margin-bottom:10px}.cl-guide-grid p,.cl-guide-grid li,.cl-note{color:var(--cl-muted)}.cl-guide-grid ul,.cl-guide-grid ol{padding-left:20px;margin:12px 0}.cl-guide-grid li+li{margin-top:10px}.cl-facts{display:grid;grid-template-columns:100px 1fr;margin:0 0 20px;gap:8px 12px}.cl-facts dt{color:var(--cl-muted)}.cl-facts dd{margin:0}.cl-note{font-size:12px;line-height:1.7;margin:12px 0}.cl-actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.course-learning button,.course-learning .cl-link-button{appearance:none;border:1px solid rgba(153,191,211,.24);border-radius:9px;background:rgba(122,168,194,.1);color:var(--cl-text);font-family:inherit;font-size:13px;font-weight:500;line-height:1.4;padding:10px 14px;cursor:pointer;transition:background .2s,transform .2s}.course-learning button:hover:not(:disabled){background:rgba(122,168,194,.2);transform:translateY(-1px)}.course-learning button:disabled{opacity:.35;cursor:default}.course-learning button:focus-visible,.course-learning a:focus-visible,.course-learning summary:focus-visible,.course-learning input:focus-visible,.course-learning textarea:focus-visible{outline:2px solid #bce8ef;outline-offset:4px}.course-learning .cl-primary{background:#c5e5ed;color:#102a37;border-color:#c5e5ed}.cl-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}.cl-form label{font-size:12px;color:var(--cl-muted);display:block}.cl-form label:first-child{grid-column:1/-1}.course-learning input,.course-learning textarea{display:block;margin-top:6px;width:100%;border:1px solid var(--cl-line);border-radius:8px;background:rgba(1,9,16,.36);color:var(--cl-text);padding:10px 12px;font-family:inherit;font-size:14px;line-height:1.5;resize:vertical}.course-learning textarea{min-height:88px}.cl-records{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}.cl-record{border-top:1px solid var(--cl-line);padding:16px 0}.cl-record h3{font-size:15px;margin:0 0 6px}.cl-record p{font-size:12px;color:var(--cl-muted);margin:0}.cl-record .cl-actions{margin-bottom:0}.cl-record button{font-size:12px;padding:7px 10px}.cl-status{min-height:22px;font-size:12px;color:#b1dde6;white-space:pre-line}.cl-comparison{overflow:auto;margin:20px 0}.cl-comparison table{min-width:540px;border-collapse:collapse;width:100%;font-size:12px}.cl-comparison th,.cl-comparison td{text-align:left;padding:10px;border-bottom:1px solid var(--cl-line);font-weight:400}.cl-comparison th{color:var(--cl-muted)}.cl-related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.cl-related a{display:block;border-top:1px solid var(--cl-line);padding:16px 0}.cl-related strong{font-size:15px;display:block;margin-bottom:6px}.cl-related span{color:var(--cl-muted);font-size:12px}.cl-route{display:flex;gap:10px;flex-wrap:wrap;padding:16px 0}.cl-route a{border-bottom:1px solid var(--cl-line);padding-bottom:4px}.cl-adapter-actions:empty{display:none}.cl-clear-confirm{padding:12px;border:1px solid #976c62;border-radius:8px}.cl-report-dialog{width:min(1040px,calc(100% - 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var(--site-gutter,20px)*2);margin:32px auto 40px}.cl-heading{align-items:start}.cl-heading h2{font-size:20px}.cl-details>summary{padding:16px;font-size:14px;gap:12px}.cl-details>summary small{display:none}.cl-details-body{padding:0 16px 18px}.cl-guide-grid,.cl-form,.cl-records,.cl-related{grid-template-columns:1fr;gap:14px}.cl-facts{grid-template-columns:78px 1fr;font-size:12px}.course-learning button{min-height:40px}.cl-report-body{padding:20px 16px}.cl-heading>a{white-space:normal;max-width:95px;text-align:right}}@media print{body.cl-print-report>*:not(.cl-report-dialog){display:none!important}body.cl-print-report .cl-report-dialog{position:static;display:block;max-height:none;width:100%;margin:0;padding:0;overflow:visible;border-radius:0}body.cl-print-report .cl-report-toolbar{display:none}body.cl-print-report .cl-report-body{padding:0}.cl-report-entry h2,.cl-report-entry h3{break-after:avoid}.cl-report-entry tr,.cl-report-entry figure{break-inside:avoid}}
@media print{body.cl-print-report{background:#fff!important;color:#172b3c!important}.cl-report-body table{table-layout:fixed}.cl-report-method,.cl-report-body p{overflow-wrap:anywhere}}

@media(max-width:780px){.gear-page.is-reading-learning .next-action{visibility:hidden;pointer-events:none}}

/* Source: assets/architecture.css */
/* Shared information architecture, safe rails, and content discovery. */
.ys-links a[aria-current=page]{color:#fff}.site-footer .footer-content{grid-template-columns:1.25fr 1.45fr .8fr 1fr;gap:40px}.footer-course-links{display:grid;width:100%;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px}.site-footer .footer-course-links a{line-height:1.6;margin:0}.site-footer .footer-column{gap:12px}.site-footer .footer-column a{overflow-wrap:anywhere}.site-footer .footer-brand{align-self:start}.site-footer .footer-brand-copy p{white-space:normal}.ys-home #engine-hero-title{font-size:clamp(48px,5.7vw,82px);line-height:1.08;letter-spacing:-.045em;font-weight:600;margin:24px 0 30px}.ys-home .home-course-status{color:inherit;text-decoration:none;pointer-events:auto}.ys-home .home-course-status:hover{background:#354453}
.home-teaching{background:#fff;color:#1d1d1f;padding:90px 0 84px}.home-teaching-heading{display:grid;grid-template-columns:1fr 1fr;gap:14px 64px;align-items:end}.home-teaching-heading .eyebrow{grid-column:1/-1;color:#6e6e73;font-size:12px}.home-teaching-heading h2{font-size:clamp(32px,3.6vw,48px);line-height:1.22;letter-spacing:-.04em;margin:0}.home-teaching-heading>p:last-child{font-size:15px;line-height:1.9;color:#6e6e73;margin:0}.home-teaching-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:38px}.home-teaching-grid>a{border-top:1px solid #d9dce2;padding:24px 2px 10px;color:inherit;text-decoration:none}.use-index{font-size:11px;color:#6e6e73;letter-spacing:.06em}.home-teaching-grid h3{font-size:24px;letter-spacing:-.025em;margin:18px 0 12px}.home-teaching-grid p{font-size:14px;color:#6e6e73;line-height:1.8;max-width:290px;min-height:76px}.home-teaching-grid>a>span:last-child,.home-teaching-more{color:#0071e3;font-size:13px}.home-teaching-more{display:inline-block;margin-top:32px;text-decoration:none}.home-teaching-grid a:hover h3{color:#0071e3}.ys-home .closing-cta{background:#f5f5f7}
.library-search-row{display:flex;align-items:end;gap:16px;margin:20px 0 16px}.library-search-row label{display:grid;gap:8px;font-size:11px;color:#666b77}.library-search-row label:first-child{flex:1}.library-search-row input,.library-search-row select{box-sizing:border-box;width:100%;height:44px;padding:10px 14px;border:1px solid #d8dbe2;border-radius:11px;background:#fff;color:#1d1d1f;font:inherit;font-size:13px}.library-search-row input:focus,.library-search-row select:focus{outline:3px solid #0071e32b;border-color:#0071e3}.library-search-row button{height:44px;padding:8px 16px;border:0;border-radius:11px;color:#38638d;background:#e9edf2;font:inherit;font-size:12px;cursor:pointer}.library-card{scroll-margin-top:80px;display:flex;flex-direction:column}.library-card[hidden]{display:none}.library-card .library-card-link{height:auto;flex:1}.library-description{min-height:44px}.library-guide{border-top:1px solid #edf0f4;margin:0 24px;color:#535965;font-size:12px}.library-guide summary{padding:17px 0;cursor:pointer;list-style-position:inside;font-size:11px;color:#365875}.library-guide>div{padding:0 0 24px;line-height:1.8}.library-guide strong{display:block;color:#313843;font-size:11px}.library-guide p{margin:0 0 14px}.library-guide small{display:block;color:#7b818a;font-size:10px;line-height:1.8}.library-guide ul{padding-left:17px;margin:6px 0 16px}.library-guide a{color:#0071e3;display:inline-block;margin-top:8px;text-decoration:none}.library-empty{padding:54px 20px;border:1px dashed #ccd2dc;border-radius:16px;text-align:center;font-size:14px;color:#6e6e73}.library-empty[hidden]{display:none}.library-empty h3{color:#1d1d1f}.library-empty a{color:#0071e3}.library-media{height:auto;aspect-ratio:1.5}.library-grid{align-items:start}.library-card:target{outline:3px solid #0071e347;outline-offset:4px}
@media(max-width:1000px){.site-footer .footer-content{grid-template-columns:1fr 1.3fr;gap:36px}.home-teaching-heading{gap:20px}.home-teaching-grid{gap:20px}.home-teaching-grid h3{font-size:21px}}
@media(max-width:650px){.site-footer .footer-content{grid-template-columns:1fr 1fr;gap:28px 18px}.site-footer .footer-brand{grid-column:1/-1}.site-footer .footer-courses{grid-column:1/-1}.footer-course-links{grid-template-columns:1fr 1fr}.home-teaching{padding:52px 0}.home-teaching-heading{display:block}.home-teaching-heading>p:last-child{font-size:13px;margin-top:22px}.home-teaching-grid{grid-template-columns:1fr;margin-top:26px;gap:12px}.home-teaching-grid h3{font-size:23px;margin:12px 0 8px}.home-teaching-grid p{max-width:none;min-height:0;font-size:13px}.home-teaching-grid>a{padding-top:22px;padding-bottom:10px}.library-search-row{flex-wrap:wrap;gap:12px}.library-search-row label:first-child{flex-basis:100%}.library-search-row label:nth-child(2){flex:1}.library-search-row input,.library-search-row select{font-size:16px}.library-guide{margin:0 22px}.library-media{aspect-ratio:1.35}.ys-home #engine-hero-title{font-size:clamp(36px,10vw,48px);margin:14px 0 18px}}
@media(prefers-reduced-motion:reduce){.library-card,.library-media img{transition:none}}

/* Keep keyboard navigation available without shifting the visual header. */
.skip-content{position:fixed;top:8px;left:16px;z-index:10000;transform:translateY(-180%);padding:12px 18px;border-radius:8px;background:#fff;color:#163e63;box-shadow:0 3px 16px #0002;text-decoration:none}
.skip-content:focus{transform:translateY(0);outline:3px solid #0071e3;outline-offset:2px}

/* Source: assets/architecture.css */
/* Shared information architecture, safe rails, and content discovery. */
.ys-links a[aria-current=page]{color:#fff}.site-footer .footer-content{grid-template-columns:1.25fr 1.45fr .8fr 1fr;gap:40px}.footer-course-links{display:grid;width:100%;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px}.site-footer .footer-course-links a{line-height:1.6;margin:0}.site-footer .footer-column{gap:12px}.site-footer .footer-column a{overflow-wrap:anywhere}.site-footer .footer-brand{align-self:start}.site-footer .footer-brand-copy p{white-space:normal}.ys-home #engine-hero-title{font-size:clamp(48px,5.7vw,82px);line-height:1.08;letter-spacing:-.045em;font-weight:600;margin:24px 0 30px}.ys-home .home-course-status{color:inherit;text-decoration:none;pointer-events:auto}.ys-home .home-course-status:hover{background:#354453}
.home-teaching{background:#fff;color:#1d1d1f;padding:90px 0 84px}.home-teaching-heading{display:grid;grid-template-columns:1fr 1fr;gap:14px 64px;align-items:end}.home-teaching-heading .eyebrow{grid-column:1/-1;color:#6e6e73;font-size:12px}.home-teaching-heading h2{font-size:clamp(32px,3.6vw,48px);line-height:1.22;letter-spacing:-.04em;margin:0}.home-teaching-heading>p:last-child{font-size:15px;line-height:1.9;color:#6e6e73;margin:0}.home-teaching-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:38px}.home-teaching-grid>a{border-top:1px solid #d9dce2;padding:24px 2px 10px;color:inherit;text-decoration:none}.use-index{font-size:11px;color:#6e6e73;letter-spacing:.06em}.home-teaching-grid h3{font-size:24px;letter-spacing:-.025em;margin:18px 0 12px}.home-teaching-grid p{font-size:14px;color:#6e6e73;line-height:1.8;max-width:290px;min-height:76px}.home-teaching-grid>a>span:last-child,.home-teaching-more{color:#0071e3;font-size:13px}.home-teaching-more{display:inline-block;margin-top:32px;text-decoration:none}.home-teaching-grid a:hover h3{color:#0071e3}.ys-home .closing-cta{background:#f5f5f7}
.library-search-row{display:flex;align-items:end;gap:16px;margin:20px 0 16px}.library-search-row label{display:grid;gap:8px;font-size:11px;color:#666b77}.library-search-row label:first-child{flex:1}.library-search-row input,.library-search-row select{box-sizing:border-box;width:100%;height:44px;padding:10px 14px;border:1px solid #d8dbe2;border-radius:11px;background:#fff;color:#1d1d1f;font:inherit;font-size:13px}.library-search-row input:focus,.library-search-row select:focus{outline:3px solid #0071e32b;border-color:#0071e3}.library-search-row button{height:44px;padding:8px 16px;border:0;border-radius:11px;color:#38638d;background:#e9edf2;font:inherit;font-size:12px;cursor:pointer}.library-card{scroll-margin-top:80px;display:flex;flex-direction:column}.library-card[hidden]{display:none}.library-card .library-card-link{height:auto;flex:1}.library-description{min-height:44px}.library-guide{border-top:1px solid #edf0f4;margin:0 24px;color:#535965;font-size:12px}.library-guide summary{padding:17px 0;cursor:pointer;list-style-position:inside;font-size:11px;color:#365875}.library-guide>div{padding:0 0 24px;line-height:1.8}.library-guide strong{display:block;color:#313843;font-size:11px}.library-guide p{margin:0 0 14px}.library-guide small{display:block;color:#7b818a;font-size:10px;line-height:1.8}.library-guide ul{padding-left:17px;margin:6px 0 16px}.library-guide a{color:#0071e3;display:inline-block;margin-top:8px;text-decoration:none}.library-empty{padding:54px 20px;border:1px dashed #ccd2dc;border-radius:16px;text-align:center;font-size:14px;color:#6e6e73}.library-empty[hidden]{display:none}.library-empty h3{color:#1d1d1f}.library-empty a{color:#0071e3}.library-media{height:auto;aspect-ratio:1.5}.library-grid{align-items:start}.library-card:target{outline:3px solid #0071e347;outline-offset:4px}
@media(max-width:1000px){.site-footer .footer-content{grid-template-columns:1fr 1.3fr;gap:36px}.home-teaching-heading{gap:20px}.home-teaching-grid{gap:20px}.home-teaching-grid h3{font-size:21px}}
@media(max-width:650px){.site-footer .footer-content{grid-template-columns:1fr 1fr;gap:28px 18px}.site-footer .footer-brand{grid-column:1/-1}.site-footer .footer-courses{grid-column:1/-1}.footer-course-links{grid-template-columns:1fr 1fr}.home-teaching{padding:52px 0}.home-teaching-heading{display:block}.home-teaching-heading>p:last-child{font-size:13px;margin-top:22px}.home-teaching-grid{grid-template-columns:1fr;margin-top:26px;gap:12px}.home-teaching-grid h3{font-size:23px;margin:12px 0 8px}.home-teaching-grid p{max-width:none;min-height:0;font-size:13px}.home-teaching-grid>a{padding-top:22px;padding-bottom:10px}.library-search-row{flex-wrap:wrap;gap:12px}.library-search-row label:first-child{flex-basis:100%}.library-search-row label:nth-child(2){flex:1}.library-search-row input,.library-search-row select{font-size:16px}.library-guide{margin:0 22px}.library-media{aspect-ratio:1.35}.ys-home #engine-hero-title{font-size:clamp(36px,10vw,48px);margin:14px 0 18px}}
@media(prefers-reduced-motion:reduce){.library-card,.library-media img{transition:none}}

/* Keep keyboard navigation available without shifting the visual header. */
.skip-content{position:fixed;top:8px;left:16px;z-index:10000;transform:translateY(-180%);padding:12px 18px;border-radius:8px;background:#fff;color:#163e63;box-shadow:0 3px 16px #0002;text-decoration:none}
.skip-content:focus{transform:translateY(0);outline:3px solid #0071e3;outline-offset:2px}