/* Shared audit corrections. Primary brand fills remain #F5611E. */
:root{--o800:#AD4616}
/* Tint the transparent logo silhouette with the exact theme color. */
.is-inner .site-header .header__heading-link,.is-home .site-header.is-scrolled .header__heading-link{position:relative}
.is-inner .site-header .header__heading-logo,.is-home .site-header.is-scrolled .header__heading-logo{opacity:0}
.is-inner .site-header .header__heading-link::after,.is-home .site-header.is-scrolled .header__heading-link::after{content:'';position:absolute;inset:0;pointer-events:none;background:var(--brand-primary);-webkit-mask:url('/brand/brightark-logo.png') center/contain no-repeat;mask:url('/brand/brightark-logo.png') center/contain no-repeat}
[data-page='/products/shade-tool/'] .ishade-intro-media{display:block;padding:0;background:transparent;border:0;box-shadow:none}
[data-page='/products/shade-tool/'] .ishade-intro-media .ishade-intro-image{display:block;width:100%;height:auto;aspect-ratio:auto;margin:0;border:0;background:transparent;box-shadow:none}
[data-page='/products/aligners/'] .ialign-intro-media{padding:0;background:transparent;border:0;box-shadow:none}
[data-page='/products/aligners/'] .ialign-intro-media .ialign-intro-image{display:block;width:100%;height:auto;aspect-ratio:auto;margin:0;border:0;border-radius:0;background:transparent;box-shadow:none}
/* Blend the white canvas of the case strips and workflow diagram into the page. */
[data-page='/products/aligners/'] .document-media:has(.ialign-case-image,.ialign-workflow-image){background:transparent}
[data-page='/products/aligners/'] .document-media .ialign-case-image{background:transparent;mix-blend-mode:multiply}
[data-page='/products/aligners/'] .document-media img[src="/_optimized/2a1d936f92f5df541bfd0cae.webp"]{height:auto;max-height:none;background:transparent}
[data-page='/products/aligners/'] img.ialign-workflow-image{background:transparent;mix-blend-mode:multiply}
[data-page='/products/scanner/'] .iscan-intro-media{display:block;padding:0;background:transparent;border:0;box-shadow:none}
[data-page='/products/scanner/'] .iscan-intro-media .iscan-intro-image{display:block;width:100%;height:auto;aspect-ratio:auto;margin:0;border:0;background:transparent;box-shadow:none}

/* Comfortable reading lengths without constraining photography or tables. */
.ba-page>p:not(.ba-lead),.ba-service>p,.contact__form-header>p,
.document-faq details p,.document-related>p,.document-end p{max-width:72ch}
[data-document-revision] .contact__form-header p,.document-collaboration>p,.document-conversation>p,.document-verification>p{max-width:72ch}
.page-default>.rte{max-width:72ch;margin-inline:0}
.page-product-story .page-default>.rte{max-width:none}
.ba-form-notice{max-width:72ch;font-size:15px;line-height:1.7}
.home-content>[data-section="7"],.home-content>[data-section="7"] .ai-benefit-text{color:#fff}
.home-content>[data-section="7"] .ai-benefit-item{border-top-color:var(--hair-w)}
.page-academy .events-calendar__item-date-block{color:var(--o800)}

/* Actual hit areas, shared across mouse, keyboard and touch. */
.locale-menu>summary{min-width:44px;min-height:44px;justify-content:center}
.locale-menu>div{top:calc(100% + 8px)}
.site-header .ba-nav-group:is(.is-active,[open])>summary{color:var(--nav-hover-accent)}
.site-header .ba-navigation a[aria-current="page"]{color:var(--o800)}
.search-toggle,.search-close{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
.mobile-menu>summary{display:flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
.article-excerpt>summary{min-height:44px;padding-block:12px}
.document-faq summary{min-height:44px;padding-block:6px}
.article-card__read-more,.ai-blog-post-link,.faq-page__sidenav a{display:inline-flex;align-items:center;min-height:44px}
.footer__navigation-list a{display:inline-flex;align-items:center;min-height:40px}
.footer-bottom>a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
.article .button-social--share{background:transparent;cursor:pointer}
.article .article-main__share{min-height:44px}
.article .button-social:hover{background:#FFFFFF;color:var(--o800)}
.site-header :focus-visible,.site-search :focus-visible,main :focus-visible{outline:3px solid var(--ink);outline-offset:4px}
.is-home .site-header:not(.is-scrolled) :focus-visible,.home-content .slideshow :focus-visible,.site-footer :focus-visible{outline:3px solid white;outline-offset:4px;box-shadow:0 0 0 2px var(--ink)}
.radio-input:focus-visible+.radio-option__label{outline:3px solid var(--ink);outline-offset:4px}
img-comparison-slider:focus-within{outline:3px solid var(--ink);outline-offset:4px}

.search-status{margin:18px 0 0;font-size:15px;line-height:1.6;color:var(--mute)}
.search-status:empty{display:none}
.search-results a:hover,.search-results a:focus-visible{color:var(--o800);text-decoration:underline;text-underline-offset:4px}
.interaction-feedback{position:fixed;z-index:100;bottom:24px;left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 44px);padding:13px 20px;border:1px solid var(--hair-2);border-radius:8px;background:var(--ink);color:var(--cream);box-shadow:0 8px 24px #1c0f072b;font-size:15px;line-height:1.6}
.interaction-feedback:empty{display:none}
.home-content .slideshow .hero-controls button{min-width:44px;height:44px;font-variant-numeric:tabular-nums}
.home-content .slideshow :lang(zh).slideshow__slide-heading{line-height:1.16;text-wrap:balance}
@media(max-width:700px){
 .header-actions{gap:12px}
}
@media(max-width:380px){
 .header-inner{gap:8px}
 .header__heading-logo{width:108px}
 .header-actions{gap:4px}
 .home-content .slideshow .hero-controls>span{display:none}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* Page templates: one type scale, spacing rhythm and image system. Hero stays unchanged. */
:root{--page-title:clamp(30.5px,3.402vw,48.5px);--section-title:clamp(24.5px,2.511vw,35.5px);--card-title:21px;--section-space:72px;--card-gap:32px;--page-width:1280px}
.ba-breadcrumbs{max-width:calc(var(--page-width) + var(--gut)*2);padding-inline:var(--gut)}
.is-inner .inner-content>.shopify-section,.is-inner .inner-content>.ba-page{max-width:calc(var(--page-width) + var(--gut)*2);padding:var(--section-space) var(--gut);margin-inline:auto}
.is-inner .inner-content>.document-product-page{max-width:calc(var(--page-width) + var(--gut)*2)!important}
.home-content>.shopify-section:not(:first-child){padding-block:var(--section-space)}
.is-inner .inner-content h1{font-size:var(--page-title);line-height:1.12;letter-spacing:-.035em;max-width:1000px;text-wrap:balance}
.is-inner .inner-content h2,.home-content :is(.video__heading,.ai-how-it-works-heading,.image-compare__heading,.ai-masonry-row-section-title,.ai-benefits-title,.ai-blog-posts-title,.banner-with-scroll-images__heading,.faq-simple__heading){font-size:var(--section-title);line-height:1.15;letter-spacing:-.03em}
/* Workflow labels must fit the five-column cards, rather than use section sizing. */
.is-inner .inner-content .document-steps h2{font-size:clamp(16px,1.458vw,19.5px);line-height:1.25;letter-spacing:-.025em;margin-bottom:12px}
.is-inner .inner-content :is(.ba-lead,.text-section__subheading){font-size:16px;line-height:1.65;max-width:72ch}
.is-inner .inner-content .ba-lead{margin:24px 0 40px}
.is-inner .document-hero .ba-lead{margin:0}
.is-inner .page-default__title{padding-bottom:32px;margin-bottom:40px}
.is-inner .document-hero{padding-bottom:48px}
.ai-blog-posts-header,.ai-how-it-works-header{display:grid;grid-template-columns:1fr;gap:12px;align-items:start;margin-bottom:32px}
.ai-blog-posts-header>*{margin:0;max-width:72ch}
.ai-how-it-works-subheading{padding-top:0;max-width:72ch}
.ai-picture-text-header,.collection-list__title,.ai-masonry-row-header,.ai-benefits-title,.faq-simple__heading{margin-bottom:32px}
.is-inner .inner-content :is(.feature-section,.document-feature){padding-block:40px;gap:32px}
.feature-body>p{max-width:72ch}
.is-inner .inner-content :is(.feature-section,.document-feature)>h2,.is-inner .page-default>.rte h2,.article .article-main__rte h2{font-size:26px;line-height:1.25}
.is-inner .inner-content :is(.document-related,.document-faq,.document-collaboration,.document-conversation){padding-block:48px}
.is-inner .inner-content .document-end{padding:32px;margin-top:32px}
/* Keep full-width color bands while their content follows the shared page grid. */
.is-inner .inner-content>:is(.about-values,.about-why){max-width:none;padding-inline:max(var(--gut),calc((100% - var(--page-width))/2))}
.is-inner .inner-content>.about-intro{padding-top:48px}
.is-inner .inner-content>.academy-banner-section{padding-top:32px;padding-bottom:0}
.is-inner .inner-content>.academy-intro-section{padding-top:32px;padding-bottom:48px}
.is-inner .inner-content>.academy-resources-section{padding-top:0}
.page-academy .academy-resource-group+.academy-resource-group{margin-top:48px;padding-top:48px}
.page-academy .ai-blog-posts-header{margin-bottom:32px}
/* Cards: matching gutters, title scale, image-to-copy spacing and image corners. */
:is(.ba-cards,.blog__grid,.ai-blog-posts-grid,.profile-grid,.collection-list__row,.product-recommendations__row,.ai-masonry-row-grid){gap:40px var(--card-gap)}
.collection .collection__grid-wrapper{gap:40px var(--card-gap)}
.ba-cards{margin-block:40px}
.ba-cards>li,.ba-cards>a,.ba-cards>article{padding:24px 24px 0 0;border-top:1px solid var(--hair-2)}
.is-inner .inner-content :is(.ba-cards h2,.ba-cards h3,.ba-cards>li>a,.article-card__title,.ai-blog-post-title,.product-card__title,.collection-card__title,.ai-picture-text-heading),.home-content :is(.ai-blog-post-title,.ai-masonry-row-card h3){font-size:var(--card-title);line-height:1.25;letter-spacing:-.025em}
.ba-cards>li>a{margin-bottom:12px}
.ba-cards :is(h2,h3){margin-bottom:12px}
.ba-cards p,.document-card-description{font-size:16px;line-height:1.7}
.article-card__content,.ai-blog-post-content,.product-card__footer{padding-top:20px}
.article-card__title{margin-bottom:16px}
.is-home .home-content .ai-blog-post-title{font-size:18px;line-height:1.35}
.page-academy .ai-blog-post-content{padding-top:20px;gap:12px}
.about-product-section .collection-card__header{margin-top:20px}
.about-product-section .collection-list__row{gap:40px var(--card-gap)}
/* Editorial thumbnails 16:10; product cards and portraits 1:1; section photos 4:3. */
.article-card__image,.ai-blog-post-image,.page-academy .ai-blog-post-image{width:100%;height:auto;aspect-ratio:8/5;border-radius:6px}
/* News artwork includes text and collages that must remain fully visible. */
.ai-blog-post-image{object-fit:contain;background:transparent}
.is-home .ai-blog-post-image,.page-about .ai-blog-post-image{aspect-ratio:1}
/* These horizontal news images fill the same square frame as the first two. */
.ai-blog-post-image:is([src="/_optimized/e500ca26d404f7a36fc241c6.webp"],[src="/_optimized/f7a7926986f451ac7991119d.webp"]){object-fit:cover}
.ai-blog-post-image[src="/_optimized/f7a7926986f451ac7991119d.webp"]{object-position:center}
[data-page*='/knowledge-base/'] .article-card__image{object-fit:contain;background:#FFFFFF}
.collection .product-card__image,.product-card__image,.about-product-section .collection-card img,.ai-masonry-row-card img{aspect-ratio:1;object-fit:contain;border-radius:6px}
.about-product-section .collection-card__image-wrapper{border-radius:6px}
.is-inner :is(.about-intro,.about-values,.about-why) .image-with-text__image{aspect-ratio:4/3;object-fit:cover;border-radius:6px}
.team-profiles .ai-picture-text-image-wrapper img{aspect-ratio:1;border-radius:6px}
.business-diagrams .ai-picture-text-image-wrapper{height:auto;aspect-ratio:4/3;border-radius:6px}
@media(max-width:700px){
 :root{--page-title:29.5px;--section-title:24.5px;--card-title:18.5px;--section-space:44px;--card-gap:24px}
 .is-home .home-content .ai-blog-post-title{font-size:16px}
 .is-inner .inner-content :is(.ba-lead,.text-section__subheading){font-size:16px}
 .is-inner .inner-content .ba-lead{margin-block:20px 32px}
 .is-inner .document-hero .ba-lead{margin:0}
 .is-inner .page-default__title{padding-bottom:24px;margin-bottom:32px}
 .is-inner .document-hero{padding-bottom:32px}
 .is-inner .inner-content>.about-intro{padding-top:32px}
 .is-inner .inner-content>.academy-banner-section{padding-top:24px;padding-bottom:0}
 .is-inner .inner-content>.academy-intro-section{padding-top:24px;padding-bottom:32px}
 .is-inner .inner-content>.academy-resources-section{padding-top:0}
 .ai-blog-posts-header,.ai-how-it-works-header,.ai-picture-text-header,.collection-list__title,.ai-masonry-row-header,.ai-benefits-title,.faq-simple__heading{margin-bottom:24px}
 .is-inner .inner-content :is(.feature-section,.document-feature){padding-block:28px;gap:20px}
 .is-inner .inner-content :is(.feature-section,.document-feature)>h2,.is-inner .page-default>.rte h2,.article .article-main__rte h2{font-size:22px}
 .is-inner .inner-content :is(.document-related,.document-faq,.document-collaboration,.document-conversation){padding-block:32px}
 .is-inner .inner-content .document-end{padding:24px;margin-top:24px}
 .page-academy .academy-resource-group+.academy-resource-group{margin-top:36px;padding-top:32px}
 :is(.ba-cards,.blog__grid,.ai-blog-posts-grid,.profile-grid,.collection-list__row,.product-recommendations__row,.ai-masonry-row-grid),.collection .collection__grid-wrapper,.about-product-section .collection-list__row{row-gap:32px}
 ul.ba-cards{grid-template-columns:1fr;margin-block:32px}
 .ba-cards>li,.ba-cards>a,.ba-cards>article{padding:20px 0 0}
 .article-card__content,.ai-blog-post-content,.product-card__footer,.page-academy .ai-blog-post-content{padding-top:16px}
 .about-product-section .collection-card__header{margin-top:16px}
}