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7px}.questions{background:var(--paper);color:var(--ink)}.questions-grid{display:grid;grid-template-columns:.85fr 1.3fr;gap:80px}.faq{border-top:1px solid #d1d0cd}.faq details{border-bottom:1px solid #d1d0cd}.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:16px;font-weight:600;padding:24px 0;line-height:1.5}.faq summary::-webkit-details-marker{display:none}.faq summary span{font-size:24px;font-weight:400;color:#b52b36;transition:transform .2s}.faq details[open] summary span{transform:rotate(45deg)}.faq details p{font-size:14px;color:#606167;line-height:1.85;max-width:540px;margin:0 25px 25px 0}footer{background:var(--ink);padding:39px 0}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}.footer-brand .brand-main{font-size:27px}.footer-brand .brand-shield{font-size:12px}.footer-brand .brand-tag{font-size:8px}.footer-inner p{color:#a7a7af;font-size:11px;line-height:1.8;margin:0}.back-top{color:#bdbdc5;font-size:10px;white-space:nowrap}.back-top span{color:var(--red);font-size:17px;margin-left:20px}
@media(min-width:1500px){.hero-grid{padding-top:90px;padding-bottom:80px}}
@media(max-width:950px){.shell{width:calc(100% - 48px)}.hero-grid{gap:22px}.brand-main{font-size:29px}nav{gap:20px;font-size:11px}h1{font-size:55px;letter-spacing:-2.8px}.hero-intro{font-size:15px}.about-grid{gap:36px}.availability-grid{gap:40px}.questions-grid{gap:40px}.criteria{padding:27px 25px 0}.hero-foot{gap:30px}.section{padding:72px 0}}
@media(max-width:650px){html{scroll-padding-top:20px}.shell{width:calc(100% - 40px)}.header-inner{min-height:94px}.brand-main{font-size:29px}.brand-tag{font-size:8px;letter-spacing:1.1px}.brand-shield{font-size:12px;padding-left:12px;margin-left:12px;letter-spacing:1.7px}nav a:first-child{display:none}nav{font-size:9px;max-width:108px;line-height:1.7;text-align:right;gap:0}nav span{margin-left:3px}.hero-grid{grid-template-columns:1fr;gap:38px;padding-top:48px;padding-bottom:25px}h1{font-size:clamp(46px,12.5vw,65px);letter-spacing:-2.8px}.eyebrow{font-size:9px;letter-spacing:1.7px;margin-bottom:23px}.hero-intro{font-size:16px;line-height:1.75;max-width:440px}.hero-art{max-width:410px;width:100%;margin:0 auto;padding:0}.shield-art{max-height:350px}.art-rule{font-size:7px}.hero-note{font-size:10px}.hero-foot{justify-content:space-between;gap:12px;padding:20px 0;font-size:8px;letter-spacing:0;line-height:1.7}.hero-foot span{max-width:100px}.hero-foot span:before{display:block;margin:0 0 8px}.section{padding:58px 0}.about-grid,.availability-grid,.questions-grid{grid-template-columns:1fr;gap:29px}h2{font-size:35px;letter-spacing:-1.25px}.about-copy p.lead{font-size:21px}.about-copy p{font-size:14px}.principles{grid-template-columns:1fr;gap:25px;margin-top:30px;padding-top:25px}.principles article{padding-left:35px}.number{position:absolute;left:0;top:4px}h3{margin:0 0 7px}.principles p{max-width:100%}.availability h2{font-size:42px}.availability-description{font-size:18px}.criteria{margin-top:7px;padding:28px 25px 0}.criteria-title{font-size:26px}.criterion p{font-size:13px}.faq summary{font-size:15px;padding:21px 0}.footer-inner{flex-wrap:wrap;gap:26px}.footer-inner p{order:3;flex-basis:100%;padding-top:21px;border-top:1px solid var(--line)}.back-top{margin-left:auto}.footer-brand .brand-main{font-size:25px}.footer-brand .brand-shield{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Product detail sections */
.section-heading{display:flex;justify-content:space-between;gap:70px;align-items:end}.section-intro{max-width:390px;color:#b9b9bf;font-size:15px;line-height:1.8;margin:0}.operation{background:#111215}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:48px;border:1px solid #36373d}.steps article{padding:30px;border-right:1px solid #36373d}.steps article:last-child{border:0}.step-index,.small-label{font-size:10px;letter-spacing:2px;font-weight:700;color:#9fa0aa}.step-symbol{font-size:45px;color:#e63843;line-height:1;margin:28px 0}.steps h3{font-size:20px;margin:0 0 15px}.steps p{font-size:14px;line-height:1.8;color:#b9b9bf;margin:0}.operation-note{font-size:12px;line-height:1.8;color:#a6a6ae;max-width:850px;margin:23px 0 0}.compatibility{background:#e9e8e4;color:#101113}.compatibility-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.compatibility-lead{font-size:19px;line-height:1.7;color:#55565b;max-width:430px;margin:24px 0 0}.fit-panel{padding:34px;border:1px solid #c6c5c2;background:#f4f3f0;border-top:3px solid #e63843}.fit-panel .small-label{color:#686970}.fit-panel h3{font-size:27px;line-height:1.2;margin:24px 0 18px}.fit-panel p{font-size:14px;line-height:1.8;color:#57585e}.fit-bottom{border-top:1px solid #d3d2cf;margin-top:25px;padding-top:20px;font-size:9px;letter-spacing:1.4px;color:#62636a}.fit-bottom span{color:#b52b36;padding:0 8px}.integration{background:#101113}.integration-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:95px;align-items:center}.integration h2 span{color:#e63843}.integration-lead{font-size:19px;line-height:1.7;color:#e1e1e4;margin:25px 0 18px}.integration-visual{border:1px solid #35363c;background:radial-gradient(ellipse at center,#43252b55,transparent 75%);padding:44px 32px}.link-unit{padding:25px;background:#202125;border:1px solid #4b4c54;display:flex;flex-direction:column;gap:13px}.link-unit>span{font-size:9px;letter-spacing:2px;color:#bdbdc5}.link-unit strong{font-size:23px;letter-spacing:-.7px}.link-unit small{font-size:11px;color:#adaeb7}.shield-unit{border-left:3px solid #e63843}.link-line{height:52px;border-left:1px solid #e63843;margin-left:50%;position:relative}.link-line:after{content:'';position:absolute;width:7px;height:7px;background:#e63843;bottom:0;left:-4px}.integration-visual>p{font-size:10px;line-height:1.7;color:#a6a6ae;margin:22px 0 0}.hero-copy h1{font-size:clamp(45px,5.1vw,70px)}
@media(max-width:950px){nav{gap:15px;font-size:10px}.integration-grid,.compatibility-grid{gap:35px}.steps article{padding:23px}.section-heading{gap:35px}.integration-visual{padding:30px 22px}}
@media(max-width:650px){nav a{display:none}nav a:last-child{display:block}.hero-copy h1{font-size:clamp(43px,11.5vw,65px);letter-spacing:-2.5px}.section-heading{display:block}.section-intro{margin-top:24px}.steps,.compatibility-grid,.integration-grid{grid-template-columns:1fr}.steps{margin-top:30px}.steps article{border-right:0;border-bottom:1px solid #36373d;padding:27px}.steps h3{font-size:20px}.step-symbol{margin:22px 0}.fit-panel{padding:27px}.fit-panel h3{font-size:25px}.integration-visual{order:2}.integration-grid{gap:32px}}
/* Research-led product and ownership pages */
.hero-actions{display:flex;align-items:center;gap:25px;flex-wrap:wrap}.text-link{display:inline-flex;align-items:center;gap:12px;font-size:12px;font-weight:700;line-height:1.8;border-bottom:1px solid #71727a;padding-bottom:4px}.text-link:hover{color:var(--red)}.dark-link{color:#292a30;border-color:#a5a5a8}.feature-ribbon{border-bottom:1px solid #37383e;background:#191a1e;padding:30px 0}.ribbon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.ribbon-grid>div{padding-left:23px;border-left:2px solid #e63843}.ribbon-grid span{display:block;font-size:8px;letter-spacing:1.6px;color:#aaaab3;margin-bottom:12px}.ribbon-grid strong{font-size:17px;letter-spacing:-.3px}.ribbon-grid p{font-size:12px;line-height:1.7;color:#b9b9bf;margin:9px 0 0}.security-intro{background:#e9e8e4;color:#101113;border-top:1px solid #d3d2cf}.accent-ink{color:#b52b36}.next-steps{background:#111215;border-top:1px solid #37383e}.audience-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;margin-top:45px}.audience-grid article{border-top:1px solid #484950;padding-top:25px}.audience-grid h3{font-size:26px;margin:20px 0 14px}.audience-grid p{font-size:15px;line-height:1.8;color:#b9b9bf;max-width:465px;margin:0 0 25px}.footer-links{display:flex;flex-wrap:wrap;gap:20px;max-width:370px;font-size:11px;line-height:1.8;justify-content:end;color:#b9b9bf}.footer-links a:hover{color:white}.page-hero{padding:50px 0 76px;background:radial-gradient(ellipse at 90% 80%,#e6384318,transparent 60%)}.breadcrumb{display:block;color:#aaaab3;font-size:11px;margin-bottom:45px}.page-hero h1{max-width:1000px;font-size:clamp(42px,5vw,65px);line-height:1.12}.page-intro{font-size:19px;line-height:1.8;color:#b9b9bf;max-width:780px;margin:28px 0 0}.reading-section{background:#f4f3f0;color:#101113;padding:76px 0 90px}.reading-grid{display:grid;grid-template-columns:260px 1fr;gap:90px;align-items:start}.reading-grid aside{border-top:3px solid #e63843;padding-top:25px}.reading-grid aside>.small-label{color:#666770}.reading-grid aside p{font-size:21px;line-height:1.7;margin:24px 0}.reading-grid aside strong{color:#b52b36;font-size:30px}.reading-grid .aside-note{font-size:14px;color:#606167}.reading-grid aside .text-link{color:#101113;border-color:#b2b2b8}.prose h2{font-size:29px;margin:44px 0 18px;letter-spacing:-.8px}.prose h2:first-child{margin-top:0}.prose p,.prose li{font-size:16px;line-height:1.9;color:#53545c}.prose p{margin:0 0 19px}.prose ul{padding-left:22px;margin:20px 0 30px}.prose li{padding-left:7px;margin-bottom:12px}.principle-callout{border-left:3px solid #e63843;background:#e9e8e4;padding:25px;margin:28px 0}.principle-callout strong{font-size:20px;line-height:1.6}.principle-callout p{margin:12px 0 0;font-size:14px}.source-links{display:flex;flex-direction:column;gap:15px;font-size:14px;line-height:1.8}.source-links a{text-decoration:underline;text-underline-offset:5px}.prose .review-note{font-size:11px;color:#74757b;margin-top:24px}.light-intro{color:#606167}.installation-stages{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin:50px 0 65px;padding-top:28px;border-top:1px solid #c8c7c4}.installation-stages h3{font-size:21px}.installation-stages p{font-size:14px;line-height:1.85;color:#606167}.brief-panel{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;background:#e9e8e4;padding:40px;margin-bottom:65px;border-top:3px solid #e63843}.brief-panel ul{margin:0;padding-left:20px}.brief-panel li{font-size:14px;line-height:1.8;margin-bottom:13px;color:#53545c}.narrow{max-width:780px}.narrow h2:first-child{margin-top:0}
@media(max-width:950px){.reading-grid{grid-template-columns:210px 1fr;gap:40px}.footer-links{max-width:250px;gap:10px 20px}.brief-panel{gap:30px;padding:30px}.ribbon-grid{gap:25px}.ribbon-grid strong{font-size:15px}.audience-grid{gap:40px}}
@media(max-width:650px){.hero-actions{gap:20px}.ribbon-grid{grid-template-columns:1fr;gap:25px}.ribbon-grid strong{font-size:17px}.feature-ribbon{padding:30px 0}.security-intro h2{font-size:32px}.audience-grid,.reading-grid,.installation-stages,.brief-panel{grid-template-columns:1fr}.audience-grid{gap:35px}.footer-links{justify-content:start;max-width:none;width:100%;gap:16px}.footer-links .back-top{margin-left:0}.page-hero{padding:30px 0 50px}.page-hero h1{font-size:42px;letter-spacing:-2px}.page-intro{font-size:17px}.breadcrumb{margin-bottom:34px}.reading-section{padding:50px 0}.reading-grid{gap:40px}.reading-grid aside p{font-size:19px;margin:16px 0}.prose h2{font-size:26px;margin-top:34px}.prose p,.prose li{font-size:15px}.installation-stages{gap:22px;margin:35px 0 40px}.installation-stages h3{margin-top:16px}.brief-panel{padding:27px;gap:25px;margin-bottom:40px}.principle-callout{padding:20px}.principle-callout strong{font-size:18px}}
@media(max-width:650px){.header-inner{padding:22px 0;gap:23px;flex-wrap:wrap}.header nav{display:grid;grid-template-columns:1fr 1fr;width:100%;max-width:none;gap:10px 20px;text-align:left;font-size:11px}.header nav a,.header nav a:first-child{display:block;padding:0}.header nav span{margin-left:4px}.hero-grid{padding-top:38px}.hero .eyebrow{max-width:300px}}

.header nav .app-link{color:#fff;border:1px solid #e63843;padding:10px 13px;white-space:nowrap}.header nav .app-link:hover{background:#e63843}.header nav{gap:22px}@media(max-width:950px) and (min-width:651px){.header-inner{flex-wrap:wrap;padding:24px 0}.header nav{width:100%;justify-content:space-between;gap:15px}}@media(max-width:650px){.header nav .app-link{grid-column:1 / -1;text-align:center;padding:12px;margin-bottom:5px}.header nav{gap:10px 20px}}