.continuous-page .site-header{background:#fff}
.breadcrumb-wrap{padding-top:24px}
.product-intro{display:grid;grid-template-columns:1fr 1.12fr;gap:46px;align-items:center;padding-top:36px;padding-bottom:55px}
.product-intro h1{font-size:35px;line-height:1.45;font-weight:600;letter-spacing:-.8px;margin:20px 0}
.product-intro h1>span{display:block;font-size:52px;letter-spacing:-1px;margin-bottom:6px}
.intro-lead{font-size:19px;line-height:1.9;color:var(--ink);max-width:400px}
.intro-variants{font-size:14px;color:var(--muted);margin-top:16px;line-height:1.8}
.intro-actions{display:flex;align-items:center;gap:25px;margin-top:30px;flex-wrap:wrap}
.intro-photo figure{margin:0}.intro-photo a{display:block;position:relative}.intro-photo img{width:100%;height:auto;border-radius:2px}
.document-layout{grid-template-columns:165px minmax(0,1fr);gap:40px}
.chapter-index{max-height:calc(100dvh - var(--fixed-header-height) - 40px);overflow:auto}
.chapter-index a{display:flex;align-items:baseline;gap:9px;font-size:14px}
.chapter-num{font-size:10px;font-weight:500;color:#8d9ba4}
.chapter-index .index-contact{margin-top:25px;font-size:13px;color:var(--red)}
.chapter+.chapter{margin-top:62px}
.chapter-heading{padding-bottom:17px}
.chapter-heading h2{font-size:31px}
.chapter-intro{font-size:17px;line-height:1.9;margin:19px 0 25px}
.feature-row{gap:30px;padding:32px 0;grid-template-columns:minmax(0,1fr) minmax(0,1.06fr)}
.feature-copy h3{font-size:24px;margin-bottom:13px}
.feature-lead{font-size:18px;line-height:1.8;margin-bottom:17px}
.feature-points li{font-size:17px;line-height:1.85;margin-top:8px}
.configuration-note{font-size:15px;line-height:1.8;margin-top:18px}
.variant{display:block;font-size:14px;color:var(--red);letter-spacing:.3px;margin-top:5px}
.optional{margin-left:7px;font-size:13px}
.feature-gallery{grid-column:1;grid-row:1;display:grid;gap:15px;min-width:0;align-items:center}
.feature-gallery figure{min-width:0;margin:0}
.feature-gallery a{display:block;position:relative;max-width:100%;margin:auto}
.feature-gallery img{width:100%;height:auto;max-height:330px;object-fit:contain;display:block}
.feature-gallery figcaption{font-size:12px;line-height:1.6;color:var(--muted);margin-top:7px;text-align:center}
.gallery-2{grid-template-columns:1fr 1fr}
.gallery-2 img{max-height:280px}
.gallery-3{grid-template-columns:repeat(3,1fr)}
.gallery-3 img{height:170px;object-fit:contain}
.gallery-4{grid-template-columns:1fr 1fr}
.gallery-4 img{height:150px;object-fit:contain}
#collector-heating .feature-gallery,#disc-collector .feature-gallery{grid-template-columns:1fr}
#disc-collector .feature-gallery figure:nth-child(2){width:72%;margin:auto}
.source-crop{position:relative;display:block;overflow:hidden}
.feature-gallery .source-crop img{position:absolute;max-width:none;max-height:none;object-fit:fill;width:var(--crop-w);height:var(--crop-h);left:var(--crop-x);top:var(--crop-y)}
.feature-directory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 23px;margin:23px 0 30px;border-top:1px solid var(--line)}
.feature-directory a{font-size:14px;line-height:1.65;display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:49px;border-bottom:1px solid var(--line);padding:10px 0}
.feature-directory a span{color:#9daab1;font-size:12px}.feature-directory a:hover{color:var(--red)}
.subchapter{scroll-margin-top:20px}.subchapter-title{font-size:20px;font-weight:600;margin-top:24px;padding:14px 0 10px;color:var(--red)}
.benefits{padding:30px 0;border-bottom:1px solid var(--line)}
.benefits h3,.config-summary h3,.needle-specs h3{font-size:24px;font-weight:600;line-height:1.5}
.benefit-list{display:grid;grid-template-columns:1fr 1fr;gap:23px 35px;margin-top:24px}
.benefit-list h4{font-size:18px;font-weight:600;margin:0 0 7px}
.benefit-list p{font-size:16px;line-height:1.85;color:var(--muted)}
.config-summary{padding-top:32px;scroll-margin-top:20px}
.spec-table-wrap{width:100%;min-width:0}
.spec-table{border-collapse:collapse;border-top:1px solid var(--line);width:100%;font-size:16px;line-height:1.85}
.spec-table caption{text-align:left;color:var(--muted);font-size:13px;padding:0 0 12px}
.spec-table th,.spec-table td{padding:13px 17px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.spec-table th{font-weight:500;color:var(--ink);background:var(--paper)}
.spec-table tbody th{width:22%;min-width:110px}
.spec-table td{color:#4e6371}
.needle-specs{padding:32px 0;scroll-margin-top:20px;border-bottom:1px solid var(--line)}
.needle-tables{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.needle-table th,.needle-table td{padding:10px 16px;font-variant-numeric:tabular-nums}
.needle-table caption{font-size:18px;color:var(--ink);font-weight:500;padding-bottom:13px}
.collector-overview{display:grid;grid-template-columns:repeat(3,1fr);gap:23px;margin:27px 0 13px}
.collector-overview a{display:block;min-width:0}
.collector-overview img{height:130px;width:100%;object-fit:contain;background:#f5f6f7}
.collector-overview span{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;margin-top:8px}
.collector-overview b{font-size:12px;font-weight:400;color:var(--muted)}
.collector-overview a:hover{color:var(--red)}
#dimensions .spec-table{font-size:16px}#dimensions .spec-table th{min-width:88px;width:32%}#dimensions .spec-table td,#dimensions .spec-table th{padding:9px 12px}
.service-block{padding:30px 0;display:grid;grid-template-columns:1fr 1fr;gap:35px;border-bottom:1px solid var(--line);scroll-margin-top:20px}
.service-block h3{font-size:24px;line-height:1.65;font-weight:550}
.service-block ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:0 25px;align-content:start}
.service-block li{padding:10px 0;border-bottom:1px solid var(--line);font-size:18px}
.context-toc{font-size:13px;margin-left:auto;white-space:nowrap;color:var(--muted)}.context-toc:hover{color:var(--red)}
#contents{scroll-margin-top:24px}
.photo-zoom{z-index:1}
@media(max-width:1200px){.document-layout{grid-template-columns:145px minmax(0,1fr);gap:28px}.feature-row{gap:24px}.feature-copy h3{font-size:23px}}
@media(max-width:1050px){.document-layout{display:block}.chapter-index{max-height:none;overflow:visible}.chapter-index nav{overflow:auto;white-space:nowrap;gap:25px}.chapter-index .index-contact{display:none}.product-intro{gap:30px}.product-intro h1{font-size:28px}.product-intro h1>span{font-size:45px}.intro-lead{font-size:17px}.intro-actions{gap:18px}.intro-actions .btn{font-size:13px;padding-inline:16px}.intro-actions .text-link{font-size:13px}}
@media(max-width:760px){
 .breadcrumb-wrap{padding-top:16px}.product-intro{display:flex;flex-direction:column;align-items:stretch;gap:27px;padding-top:30px;padding-bottom:30px}
 .product-intro h1{font-size:28px;line-height:1.5;margin:15px 0}.product-intro h1>span{font-size:44px;margin-bottom:4px}
 .intro-lead{font-size:17px;max-width:none}.intro-variants{font-size:13px;margin-top:10px}.intro-actions{margin-top:22px;gap:24px}
 .intro-actions .btn{padding:11px 17px;font-size:13px;min-height:46px}.intro-actions .text-link{font-size:13px}
 .chapter-index nav{gap:24px}.chapter-index a{font-size:13px;gap:5px}.chapter-index{margin-bottom:28px}
 .chapter-heading h2{font-size:26px}.chapter+.chapter{margin-top:42px}.chapter-intro{font-size:16px;line-height:1.85;margin:17px 0 21px}
 .feature-row{gap:0;padding:28px 0}.feature-copy h3{font-size:23px;margin-bottom:17px}.feature-lead{font-size:17px;margin:0 0 13px}.feature-points li{font-size:16px;margin-top:7px}
 .feature-gallery{order:1;margin:0 0 18px;gap:12px}.feature-gallery img{max-height:300px}.gallery-2 img{max-height:215px}.gallery-3{grid-template-columns:repeat(3,1fr);gap:9px}.gallery-3 img{height:120px}.gallery-4 img{height:125px}
 .feature-gallery figcaption{font-size:11px}.configuration-note{font-size:15px;margin-top:15px}.variant{display:inline-block;font-size:12px;margin:0 0 0 9px}
 .feature-directory{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px;margin:20px 0 24px}.feature-directory a{font-size:13px;min-height:49px;padding:10px 0}.feature-directory a span{font-size:10px}
 .benefit-list{grid-template-columns:1fr;gap:20px}.benefit-list h4{font-size:18px}.benefit-list p{font-size:16px}.benefits h3,.config-summary h3,.needle-specs h3{font-size:23px}
 .spec-table{font-size:15px;line-height:1.85}.spec-table th,.spec-table td{padding:11px 10px}.spec-table tbody th{width:29%;min-width:80px}
 .needle-tables{grid-template-columns:1fr;gap:28px}.needle-table th,.needle-table td{padding:10px 14px}.needle-table{font-size:16px}
 .collector-overview{grid-template-columns:repeat(2,1fr);gap:21px 16px}.collector-overview img{height:107px}.collector-overview span{font-size:12px;gap:5px}
 .service-block{grid-template-columns:1fr;gap:18px}.service-block h3{font-size:23px}.service-block li{font-size:17px}
 .context-toc{font-size:12px}.product-context-inner{gap:9px}.product-context strong,.product-context span{font-size:14px}
 #dimensions .spec-table-wrap{order:3}#dimensions .feature-copy{display:contents}#dimensions .spec-table{font-size:15px}
}

/* Three persistent rows: global navigation, product identity, chapter index. */
:root{--chapter-nav-height:52px;--all-header-height:calc(var(--fixed-header-height) + var(--chapter-nav-height))}
html{scroll-padding-top:var(--all-header-height)}
.product-context-inner{min-height:calc(var(--product-context-height) - 1px)}
.chapter-index{position:sticky;top:var(--fixed-header-height);z-index:28;max-height:none;overflow:visible;margin:0;padding:0;background:#fff;border-bottom:1px solid var(--line)}
.chapter-index nav{height:calc(var(--chapter-nav-height) - 1px);display:flex;flex-direction:row;align-items:center;gap:32px;padding:0;margin-inline:auto;border:0;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}
.chapter-index p{flex-shrink:0;display:block;margin:0;font-size:12px}
.chapter-index a{height:100%;display:flex;align-items:center;gap:9px;padding:0;font-size:15px;flex-shrink:0}
.chapter-index a[aria-current="location"]:before{display:none}
.chapter-index a[aria-current="location"]:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--red)}
.document-layout{display:block;max-width:1140px}
.feature-gallery{max-width:480px;width:100%;justify-self:start}
.feature-gallery .source-crop{max-width:calc(330px * var(--crop-ratio));margin-inline:auto}
@media(max-width:1050px){.chapter-index nav{gap:25px}.chapter-index p{display:none}.chapter-index a{font-size:14px}}
@media(max-width:760px){:root{--chapter-nav-height:48px}.chapter-index nav{gap:23px}.chapter-index a{font-size:13px;gap:6px}.chapter-index{margin:0}.feature-gallery{max-width:none}.feature-gallery .source-crop{max-width:calc(300px * var(--crop-ratio))}}

/* Match the homepage cards: one fine outline and a quiet image panel. */
.feature-row{gap:0;padding:0;margin-block:24px;border:1px solid var(--line);border-radius:4px;background:#fff}
.feature-copy{min-width:0;padding:28px 30px}
.feature-gallery{max-width:none;align-self:stretch;align-content:center;padding:26px;background:#f5f6f7;border-right:1px solid var(--line);border-radius:3px 0 0 3px}
@media(max-width:1050px) and (min-width:761px){.feature-copy{padding:24px}.feature-gallery{padding:22px}}
@media(max-width:760px){
 .feature-row{padding:20px 18px;margin-block:20px}
 .feature-copy{padding:0}
 .feature-gallery{width:auto;padding:18px;margin:0 -18px 18px;border-right:0;border-block:1px solid var(--line);border-radius:0}
}

/* Product brochure remains directly available near the primary actions. */
.intro-download{margin-top:19px}
.pdf-download{display:inline-flex;align-items:center;gap:9px;font-size:15px;line-height:1.6;color:var(--ink);padding-block:5px;border-bottom:1px solid var(--line)}
.pdf-download .icon{width:19px;height:19px;color:var(--red)}
.pdf-download>span{color:var(--red);margin-left:6px}
.pdf-download:hover{color:var(--red);border-color:var(--red)}
.pdf-download:focus-visible{outline:2px solid var(--red);outline-offset:4px}
@media(max-width:760px){.intro-download{margin-top:16px}.pdf-download{font-size:14px}}

/* The hero uses its full column; detail-gallery size caps do not apply. */
.intro-photo{min-width:0}
.intro-photo .source-crop{width:100%;max-width:none;border-radius:2px}
.intro-photo .source-crop img{position:absolute;max-width:none;max-height:none;object-fit:fill;width:var(--crop-w);height:var(--crop-h);left:var(--crop-x);top:var(--crop-y)}