:root{--paper:#fafafa;--white:#fff;--ink:#1a1a1a;--muted:#626863;--line:#d9ddda;--mist:#e9eeea;--forest:#264d40;--font:Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;--wide:1320px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:4px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}:focus-visible{outline:3px solid #307458;outline-offset:4px}img{display:block;max-width:100%;height:auto}button,select{min-height:44px}[hidden]{display:none!important}.skip{position:fixed;left:12px;top:-100px;background:#fff;padding:12px;z-index:100}.skip:focus{top:12px}.wrap{width:calc(100% - 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@media(min-width:1600px){.hero-figure>img{height:650px}}
@media(max-width:900px){.wrap{width:calc(100% - 48px)}.site-nav{padding-inline:24px}.section-grid,.editorial,.builder{gap:35px}.fit{padding:34px;gap:35px}.card-grid{grid-template-columns:repeat(2,1fr)}.hub-intro{gap:35px}.nav-links{gap:18px}.hub-feature img{height:410px}.fit-number{font-size:64px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

.solar-study{position:relative;aspect-ratio:16/10;background:var(--mist);overflow:hidden}.solar-study .study-poster{width:100%;height:100%;object-fit:cover}.solar-study .study-start{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);white-space:nowrap}.solar-study iframe{display:block;width:100%;height:100%;border:0}@media(max-width:600px){.solar-study{aspect-ratio:4/5}}

.answer-summary{max-width:76ch;line-height:1.65;color:var(--muted);margin:0 0 2rem}.faq-item{border-top:1px solid var(--line);padding:1.1rem 0}.faq-item summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:600}.faq-item p{max-width:76ch;line-height:1.65;margin-top:.8rem}

.hub-editorial .editorial-body{max-width:78ch}.hub-comparison-images{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem}.hub-comparison-images figure{margin:0}.hub-comparison-images img{width:100%;aspect-ratio:8/5;object-fit:cover;background:var(--mist)}.hub-comparison-images figcaption{padding-top:.75rem;color:var(--muted);font-size:.9rem}.related-model{padding-top:1rem;border-top:1px solid var(--line)}@media(max-width:600px){.hub-comparison-images{grid-template-columns:1fr}}

.hub-editorial p{overflow-wrap:anywhere}

.hub-comparison-images img[src$=".svg"]{object-fit:contain}
/* Prevent accidental iOS text selection only inside the interactive viewer. */
.viewer-shell canvas,.viewer-tools,.viewer-tools *,.viewer-start button{user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent}
.viewer-shell canvas{touch-action:none}
.image-comparison{position:relative;width:100%}.comparison-controls{display:flex;gap:4px;padding:8px;background:#f5f4f0;position:relative;z-index:3}.comparison-controls button{min-height:44px;padding:8px 12px;border:1px solid #c9cec6;border-radius:6px;background:white;color:#263c32;font:inherit;cursor:pointer}.comparison-controls [aria-pressed=true]{background:#263c32;color:white}.comparison-images{display:grid;grid-template-columns:1fr;touch-action:pan-y}.comparison-images img{width:100%;aspect-ratio:8/5;object-fit:contain;display:block}.comparison-images [hidden]{display:none!important}.comparison-images button{width:100%}.image-comparison[data-mode=both] .comparison-images{grid-template-columns:1fr 1fr}.ai-label{font-size:12px!important;line-height:1.4;padding:7px 10px;margin:0!important;background:#f5f4f0;color:#344438}.hero-figure:has(.image-comparison)>.render-label{top:70px}.hero-figure:has(.image-comparison)>.hero-actions{bottom:45px}.hero-figure:has(.image-comparison) .comparison-images img{height:auto}.hero-figure:has(.image-comparison){aspect-ratio:auto}
@media(max-width:600px){.compare-desktop{display:none}.comparison-controls button{flex:1;font-size:13px}.image-comparison[data-mode=both] .comparison-images{grid-template-columns:1fr}.hero-figure:has(.image-comparison)>.hero-actions{position:relative;bottom:auto;left:auto;padding:10px;background:#f5f4f0}.hero-figure:has(.image-comparison)>.render-label{top:65px}}
/* WebKit native popup buttons can ignore min-height until appearance is reset. */
.field select,.viewer-tools select{appearance:none;-webkit-appearance:none;height:48px;min-height:48px;font-size:16px;line-height:22px;padding:11px 38px 11px 12px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%23334438' stroke-width='2'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
body.lightbox-open .mobile-cta,body:has(.lightbox[open]) .mobile-cta{display:none!important}
.lightbox[open]{position:fixed;inset:0;margin:auto;z-index:1000;max-height:calc(100dvh - 24px);overflow:auto}.lightbox-bar{position:sticky;top:0;z-index:1;background:#fafafa}.lightbox-close{flex-shrink:0;min-width:44px;min-height:44px}
.hero-figure:has(.image-comparison)>.render-label{bottom:auto;pointer-events:none}
/* Keep AI disclosure visible on the image, clear of the mobile sticky CTA. */
[data-ai-panel]{position:relative}[data-ai-panel] .ai-label{position:absolute;top:10px;left:10px;right:10px;z-index:2;width:fit-content;max-width:calc(100% - 20px);background:#fafafaf2;pointer-events:none}.hero-figure:has(.image-comparison[data-mode=ai])>.render-label{display:none}
/* Q5: comfortable reference links without changing their type size. */
.crumb a,.footer-links a,.site-footer p a,main p a:not(.button),main li a:not(.button),main details a:not(.button){display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:4px 6px;vertical-align:middle;box-sizing:border-box}
@media(max-width:600px){
 html{--mobile-cta-height:calc(65px + env(safe-area-inset-bottom));scroll-padding-bottom:calc(var(--mobile-cta-height) + 16px)}
 body[data-house] .hero-figure{overflow:visible}
 body[data-house] .hero-figure>.hero-actions,body[data-house] .hero-figure:has(.image-comparison)>.hero-actions{position:sticky;top:auto;bottom:calc(var(--mobile-cta-height) + 12px);left:auto;right:auto;z-index:26;width:fit-content;margin-left:auto;padding:10px 18px;background:transparent}
 body[data-house] .hero-actions .button{box-shadow:0 2px 12px #14261d20}
}
/* Hub links retain a full 44px touch target at fractional line heights. */
.hub-feature .feature-link{display:inline-flex;align-items:center;min-height:44px}
.house-card>a{display:block;min-height:44px}