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/* Adapted from accepted Petabit r21: typography A, editorial rhythm A, side-panel B.
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body.petabit-r21 .chapter-grid article{padding-top:21px;border-color:#d6dadd;}
body.petabit-r21 .chapter-grid h3{min-height:2.6em;}
body.petabit-r21 .chapter-foot{border-color:#d6dadd;}
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body.petabit-r21 .site-footer a{min-height:36px;}
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body.petabit-r21 .site-nav>a,body.petabit-r21 .site-nav>.site-nav-group>button{font-weight:500;}
body.petabit-r21.has-hero-header:not(.past-hero) .site-menu{color:#fff;}
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@media(max-width:760px){
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}
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/* Reset the inherited <=1000px menu at the 1100px desktop boundary for the expanded WBN navigation. */
@media screen and (min-width:1100px){
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}
/* Exact accepted Petabit typography roles and technical text structure. */
@media screen{
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body.petabit-r21 :is(h1,h2,h3,h4){font-family:WBNDisplay,WBNOpen,sans-serif;}
body.petabit-r21 :is(p,li,label,input,select,textarea,button){font-family:WBNOpen,sans-serif;}
body.petabit-r21 .engineering-heading{display:block;max-width:880px;margin-bottom:32px;}
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body.petabit-r21 .engineering-heading>p{font:400 17px/1.65 WBNOpen,sans-serif;max-width:720px;margin:0;}
body.petabit-r21 .engineering-overview{display:block;}
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body.petabit-r21 .engineering-intro>p{grid-column:2;grid-row:1;font:400 17px/1.65 WBNOpen,sans-serif;max-width:62ch;margin:0;}
body.petabit-r21 .engineering-topics{grid-column:2;grid-row:2;margin:0;}
body.petabit-r21 .engineering-capabilities{row-gap:24px;column-gap:64px;}
body.petabit-r21 .engineering-capabilities article{padding-top:21px;}
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body.petabit-r21 .engineering-deliverables p{font:400 15px/1.65 WBNOpen,sans-serif;letter-spacing:.2px;}
body.petabit-r21 .site-footer,body.petabit-r21 .site-footer p,body.petabit-r21 .site-footer a{font-family:WBNOpen,sans-serif;letter-spacing:.2px;}
body.petabit-r21 .site-footer p{font-size:15px;line-height:1.65;margin-top:8px;}
body.petabit-r21 .site-footer h2{font:600 17px/1.4 WBNDisplay,WBNOpen,sans-serif;}
body.petabit-r21 .r32-company-hero h1{max-width:19ch;}
body.petabit-r21 .search-result h2>a{display:block;}
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}
}
@media screen{
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}

/* Petabit follow-up choices: mobile expertise shortcuts and the retained charcoal footer. */
body.petabit-r21 .nav-explore{display:none;}
body.petabit-r21 .site-footer{background:#1f272b;color:#d3dce1;border-top-color:#1f272b;}
/* Keep the supplied color artwork readable on charcoal without recoloring it. */
body.petabit-r21 .site-footer .site-brand{display:inline-flex;width:auto;max-width:100%;box-sizing:border-box;align-items:center;background:#fff;padding:8px 12px;}
body.petabit-r21 .site-footer .site-brand img{max-width:100%;height:auto;}
body.petabit-r21 .site-footer h2{color:#fff;}
body.petabit-r21 .site-footer p,body.petabit-r21 .site-footer-note{color:#d3dce1;}
body.petabit-r21 .site-footer a{color:#e6edf2;}
body.petabit-r21 .site-footer a:hover{color:#fff;text-decoration:underline;text-decoration-color:#0072ce;text-underline-offset:5px;}
body.petabit-r21 .site-footer a:focus-visible{outline:3px solid #0072ce;outline-offset:4px;}
body.petabit-r21 .site-footer-note{border-color:#46515a;}
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}

/* Published parent-company contact details, explicitly approved for WBN's footer. */
body.petabit-r21 .footer-parent-contact{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px 35px;margin-top:36px;padding-top:28px;border-top:1px solid #46515a;}
body.petabit-r21 .footer-parent-contact h2{margin:0;}
body.petabit-r21 .footer-parent-contact p{margin:10px 0 0;}
body.petabit-r21 .footer-contact-links a{display:flex;align-items:center;min-height:44px;font-size:15px;line-height:1.65;overflow-wrap:anywhere;}
body.petabit-r21 .footer-parent-contact address{margin:0;font:400 15px/1.65 WBNOpen,sans-serif;letter-spacing:.2px;color:#d3dce1;}
@media(max-width:900px){body.petabit-r21 .footer-parent-contact{grid-template-columns:1fr 1fr;}body.petabit-r21 .footer-parent-contact>div:first-child{grid-column:1/-1;}}
@media(max-width:600px){body.petabit-r21 .footer-parent-contact{grid-template-columns:1fr;gap:20px;margin-top:28px;padding-top:24px;}}

/* Accepted Petabit navigation cues, using WBN's selected blue. */
body.petabit-r21 .site-nav>a,body.petabit-r21 .site-nav>.site-nav-group>button{position:relative;}
body.petabit-r21 .site-nav>a::after,body.petabit-r21 .site-nav>.site-nav-group>button::after{content:'';position:absolute;left:0;right:0;bottom:2px;height:2px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .18s ease;}
body.petabit-r21 .site-nav>a:is(:hover,.is-current,[aria-current])::after,body.petabit-r21 .site-nav>.site-nav-group>button:is(:hover,.is-current,[aria-current])::after{transform:scaleX(1);}
body.petabit-r21 .site-nav>a.is-current,body.petabit-r21 .site-nav>.site-nav-group>button.is-current,body.petabit-r21 .site-dropdown a[aria-current]{color:#0072ce;}
body.petabit-r21 .site-nav>a.site-finder-link::after{left:16px;right:16px;}
body.petabit-r21 .site-nav .nav-shortcuts a.is-current{color:#0072ce;font-weight:600;text-decoration:underline;text-underline-offset:4px;}
body.petabit-r21 .site-nav :is(a,button):focus-visible{outline:3px solid #0072ce;outline-offset:4px;}
body.petabit-r21.has-hero-header:not(.past-hero) .site-header .site-nav>:is(a,button):focus-visible,body.petabit-r21.has-hero-header:not(.past-hero) .site-header .site-nav>.site-nav-group>button:focus-visible{outline-color:#fff;}
@media(max-width:1099px){
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}
@media(prefers-reduced-motion:reduce){body.petabit-r21 .site-nav>a::after,body.petabit-r21 .site-nav>.site-nav-group>button::after{transition:none;}}

/* Concise parent-company engineering background, approved independently of the Company opening. */
body.petabit-r21 .company-background{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px 86px;padding-block:48px;border-top:1px solid #d6dadd;}
body.petabit-r21 .company-background h2{font:500 var(--wbn-subtitle)/1.15 WBNDisplay,WBNOpen,sans-serif;letter-spacing:-.025em;max-width:19ch;margin:18px 0 0;}
body.petabit-r21 .company-background-body p{font:400 17px/1.65 WBNOpen,sans-serif;letter-spacing:.2px;max-width:62ch;margin:0 0 18px;}
body.petabit-r21 .company-background-links{display:flex;flex-wrap:wrap;gap:4px 28px;margin-top:22px;}
body.petabit-r21 .company-background-links a{display:inline-flex;align-items:center;gap:14px;min-height:44px;max-width:100%;font:500 14px/1.5 WBNOpen,sans-serif;color:#0072ce;text-decoration:underline;text-underline-offset:4px;}
body.petabit-r21 .company-background-links a:focus-visible{outline:3px solid #0072ce;outline-offset:4px;}
@media(max-width:1000px){body.petabit-r21 .company-background{column-gap:44px;}}
@media(max-width:760px){body.petabit-r21 .company-background{grid-template-columns:1fr;gap:26px;padding-block:36px;}body.petabit-r21 .company-background-body p{font-size:15px;}}

/* Owner-selected Petabit editorial labels; technical codes and diagram text retain their own styles. */
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/* Let the long technical-reference action wrap within the phone reading column. */
body.petabit-r21 .featured-engineering-copy .engineering-cta{white-space:normal;}

/* Owner-approved return control, created only by the long-guide reading script. */
body.petabit-r21 .guide-back-top{position:fixed;right:24px;bottom:max(24px,env(safe-area-inset-bottom));z-index:20;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 14px;background:#fff;color:#0072ce;border:1px solid #0072ce;box-shadow:0 2px 10px #0000000d;font:600 12px/1.5 WBNOpen,sans-serif;text-decoration:none;letter-spacing:0}
body.petabit-r21 .guide-back-top[hidden]{display:none}
body.petabit-r21 .guide-back-top>span:first-child{font-size:20px;font-weight:400}
body.petabit-r21 .guide-back-top:hover{background:#0072ce;color:#fff}
body.petabit-r21 .guide-back-top:focus-visible{outline:3px solid #0072ce;outline-offset:3px}
@media(max-width:760px){body.petabit-r21 .guide-back-top{right:16px;bottom:max(16px,env(safe-area-inset-bottom))}}
@media print{body.petabit-r21 .guide-back-top{display:none!important}}