.product-guide{--product-rule:#d5dfd8;--product-paper:#f3f7f3;max-width:1440px;font-size:18px;line-height:1.75}.product-hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.85fr);gap:clamp(24px,4vw,64px);align-items:center;padding:36px 0 48px;border-bottom:1px solid var(--product-rule)}.product-hero h1{font-size:clamp(34px,3.6vw,58px);line-height:1.12;letter-spacing:-.035em;margin:16px 0 24px;max-width:19ch}.product-lead{font-size:22px;line-height:1.65;max-width:62ch}.product-byline,.product-test-note,.product-hero figcaption{font-size:18px;line-height:1.6;color:#42574a}.product-test-note{border-left:3px solid #a17b28;padding-left:14px;margin-top:24px}.product-hero figure{margin:0}.product-hero img{display:block;width:100%;height:380px;object-fit:contain;background:#fff;border:1px solid var(--product-rule);border-radius:8px}.product-hero figcaption{margin-top:12px}.product-reading{display:grid;grid-template-columns:245px minmax(0,1fr);gap:clamp(24px,5vw,72px);margin-top:36px}.product-toc{position:sticky;top:110px;align-self:start;display:grid;gap:6px;max-height:calc(100vh - 135px);overflow:auto;border-left:2px solid var(--product-rule);padding-left:20px;font-size:18px;line-height:1.5}.product-toc strong{margin-bottom:12px}.product-toc a{padding:7px 0;text-decoration:none}.product-toc a:hover,.product-toc a:focus-visible{text-decoration:underline}.product-content{min-width:0;max-width:1000px}.product-section{scroll-margin-top:120px;padding:16px 0 40px;margin-bottom:20px;border-bottom:1px solid var(--product-rule)}.product-section h2{font-size:clamp(27px,2.5vw,37px);line-height:1.25;margin:0 0 24px;letter-spacing:-.02em}.product-section h3{font-size:21px;line-height:1.45;margin:0 0 8px}.product-section p{max-width:76ch;margin:12px 0 20px}.product-table-wrap{overflow-x:auto}.product-table{border-collapse:collapse;width:100%;font-size:18px;line-height:1.6}.product-table th,.product-table td{padding:18px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--product-rule);overflow-wrap:anywhere}.product-table thead{background:var(--product-paper)}.product-table th{font-weight:650}.product-table tbody th{width:24%}.product-table td{min-width:140px}.product-table th:first-child{padding-left:0}.product-table thead th:first-child{padding-left:16px}.product-callout{padding:20px 26px;background:#fbf4e3;border-left:4px solid #aa7c22}.product-rows{padding-left:28px}.product-rows li{padding:12px 0 14px 6px}.product-references{font-size:18px;color:#42574a}.product-faq{border-bottom:1px solid var(--product-rule);padding:18px 0}.product-faq summary{font-size:21px;font-weight:600;cursor:pointer;min-height:44px}.product-faq p{padding:0 8px}.product-brief{padding:32px;background:var(--product-paper);border:1px solid var(--product-rule);border-radius:8px}.product-brief label{display:block;font-weight:600;margin:20px 0}.product-brief textarea{display:block;font:inherit;font-weight:400;width:100%;min-height:95px;resize:vertical;padding:12px;border:1px solid #8fa999;border-radius:4px;background:white}.product-brief textarea:focus-visible{outline:3px solid var(--forest);outline-offset:3px}.product-sources{padding-left:28px}.product-sources li{padding:10px 0}.product-sources p{font-size:18px;margin:6px 0}.product-content a:focus-visible,.product-toc a:focus-visible{outline:3px solid var(--forest);outline-offset:4px}
@media(max-width:1000px){.product-reading{grid-template-columns:190px minmax(0,1fr);gap:24px}.product-hero{grid-template-columns:1fr 1fr}.product-hero img{height:300px}}
@media(max-width:760px){.product-hero,.product-reading{grid-template-columns:1fr}.product-hero{padding-top:22px;gap:22px}.product-hero h1{font-size:36px}.product-lead{font-size:20px}.product-hero img{height:260px}.product-toc{position:static;max-height:none;padding:20px;border:1px solid var(--product-rule);background:var(--product-paper)}.product-toc a{padding:10px 0}.product-table,.product-table tbody,.product-table tr,.product-table th,.product-table td{display:block}.product-table thead{display:none}.product-table tbody th{width:100%;padding:16px 0 6px;border:0}.product-table td{min-width:0;padding:8px 0}.product-table td:last-child{color:#42574a;padding-bottom:20px}.product-table tr{margin-bottom:12px}.product-brief{padding:22px 16px}.product-brief .button-row{align-items:stretch;flex-direction:column}.product-section{scroll-margin-top:90px}.product-callout{padding:18px}.product-section h2{font-size:28px}}
@media print{body.product-print header.header,body.product-print footer,body.product-print .share-bar,body.product-print .breadcrumb,body.product-print .product-hero,body.product-print .product-toc,body.product-print .product-section:not(#brief){display:none!important}body.product-print .product-reading{display:block}body.product-print .product-brief{border:0;padding:0;background:white}body.product-print .button-row{display:none}body.product-print textarea{height:auto;overflow:visible;border:1px solid #999;color:black}body.product-print .product-guide{font-size:12pt;max-width:none}body.product-print #brief{break-inside:auto}}
.product-brief [hidden]{display:none!important}
@media print{body.product-print .share-strip{display:none!important}body.product-print [data-copy-fallback],body.product-print [data-brief-status]{display:none!important}}

@media screen{.product-guide .product-byline,.product-guide .product-test-note,.product-guide figcaption,.product-guide .product-references,.product-guide .product-sources p,.product-guide .product-toc,.product-guide .small-cap,.product-guide .breadcrumb{font-size:18px}}

/* Preserve readable source notes and technical identifiers on narrow screens. */
.product-sources li{overflow-wrap:anywhere}

/* Individually selected, whole-source comparison views. */
.product-figures{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:28px 0}.product-figures figure{margin:0;min-width:0}.product-figures img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:contain;background:#fff;border:1px solid var(--product-rule)}.product-figures figcaption{font-size:18px;line-height:1.6;margin-top:12px;overflow-wrap:anywhere}
@media(max-width:760px){.product-figures{grid-template-columns:1fr;gap:28px}}

/* Keep source-column context when prose tables stack; compact numeric tables stay comparative. */
@media screen and (max-width:760px){.product-table td[data-label]::before{content:attr(data-label);display:block;font-size:18px;font-weight:600;line-height:1.45;color:#42574a;margin-bottom:5px}.product-table--numeric{display:table;table-layout:fixed;width:100%}.product-table--numeric thead{display:table-header-group}.product-table--numeric tbody{display:table-row-group}.product-table--numeric tr{display:table-row;margin:0}.product-table--numeric th,.product-table--numeric td{display:table-cell;width:50%;padding:14px 10px;border-bottom:1px solid var(--product-rule);font-size:18px;line-height:1.5}.product-table--numeric tbody th{width:50%;padding:14px 10px;border-bottom:1px solid var(--product-rule)}.product-table--numeric th:first-child,.product-table--numeric thead th:first-child{padding-left:10px}.product-table--numeric td:last-child{padding-bottom:14px}.product-table--numeric td[data-label]::before{content:none}}

/* A single technical illustration uses the reading column, preserving its original proportions. */
.product-figures>figure:only-child{grid-column:1/-1}.product-figures>figure:only-child img{aspect-ratio:auto;max-height:min(70vh,640px)}