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/* Long-form reading pages */
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.reading-shell>section,.reading-shell>aside{margin:0 0 30px;padding:36px 42px;background:#fff;border:1px solid var(--aa-line);border-radius:12px;box-shadow:0 6px 22px rgba(20,83,120,.055)}
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.reading-shell h3{margin:0 0 9px;color:var(--aa-blue-dark);font-size:22px;line-height:1.55}
.reading-shell p,.reading-shell li,.reading-shell dd{font-size:18px;line-height:1.95}
.article-kicker{margin:0 0 9px!important;color:var(--aa-blue-dark)!important;font-size:16px!important;font-weight:800;letter-spacing:.08em}
.article-meta{display:flex;flex-wrap:wrap;gap:9px 22px}
.article-lead{margin:0;color:var(--aa-ink);font-size:20px!important;font-weight:700;line-height:1.9!important}
.quick-answer{margin-top:22px;padding:18px 21px;background:var(--aa-sky);border-left:5px solid var(--aa-blue);border-radius:6px}
.quick-answer span{display:block;margin-bottom:3px;color:var(--aa-blue-dark);font-size:15px;font-weight:800}
.quick-answer p{margin:0!important;color:var(--aa-ink);font-weight:700}
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.contents-nav{margin:0 0 30px;padding:28px 34px;background:#eef9fd;border:1px solid #bde2ef;border-radius:10px}
.contents-nav strong{display:block;margin-bottom:13px;color:var(--aa-ink);font-size:21px}
.contents-nav ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 35px;margin:0;padding-left:27px}
.contents-nav li{margin:0;font-size:16px;line-height:1.65}
.contents-nav a{color:var(--aa-blue-dark);font-weight:700;text-decoration:underline;text-underline-offset:3px}
.check-panel,.term-box,.example-box,.note-box,.warning-box,.source-box{margin:24px 0;padding:23px 26px;border-radius:8px}
.check-panel,.note-box,.source-box{background:var(--aa-sky);border:1px solid #bde2ef}
.term-box{background:#f5f8fa;border:1px solid var(--aa-line)}
.example-box{background:#f2faf5;border:1px solid #bfe5d2}
.warning-box{background:#fff8ee;border:1px solid #f1cf9f;border-left:5px solid var(--aa-orange)}
.check-panel strong,.term-box strong,.example-box strong,.note-box strong,.warning-box strong,.source-box strong{display:block;margin-bottom:7px;color:var(--aa-ink);font-size:19px}
.check-panel p,.term-box p,.example-box p,.note-box p,.warning-box p,.source-box p{margin:6px 0}
.tick-list{margin:18px 0 0;padding:0;list-style:none}
.tick-list li{position:relative;margin:10px 0;padding-left:34px}
.tick-list li:before{content:"✓";position:absolute;left:0;top:2px;display:grid;place-items:center;width:23px;height:23px;border-radius:50%;background:#dff4eb;color:#14745c;font-size:14px;font-weight:900;line-height:1}
.explain-steps,.comparison-points,.symptom-list,.mistake-list,.choice-list,.priority-list{display:grid;gap:15px;margin:20px 0}
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.mistake-list article{border-left-color:#efb35d}
.category-rows{margin:20px 0;border-top:1px solid var(--aa-line)}
.category-rows article{display:grid;grid-template-columns:minmax(160px,220px) 1fr;gap:25px;padding:20px 5px;border-bottom:1px solid var(--aa-line)}
.category-rows article h3,.category-rows article p{margin:0}
.profile-rows{margin:22px 0;border-top:1px solid var(--aa-line)}
.profile-rows>div{display:grid;grid-template-columns:190px 1fr;border-bottom:1px solid var(--aa-line)}
.profile-rows dt{padding:17px 20px;background:#eef8fc;color:var(--aa-ink);font-size:16px;font-weight:800}
.profile-rows dd{margin:0;padding:15px 22px}
.readable-table{max-width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--aa-line);border-radius:8px}
.readable-table table{min-width:680px!important;border:0!important}
.term-list,.timeline-list{margin:20px 0;padding:0;list-style:none}
.term-list li,.timeline-list li{margin:0;padding:17px 4px;border-bottom:1px solid var(--aa-line)}
.term-list strong,.timeline-list strong{display:block;color:var(--aa-ink)}
.faq-block{border-top:1px solid var(--aa-line)}
.faq-block details{border-bottom:1px solid var(--aa-line)}
.faq-block summary{position:relative;padding:21px 42px 21px 8px;cursor:pointer;color:var(--aa-ink);font-size:18px;font-weight:800;line-height:1.65}
.faq-block summary:after{content:"＋";position:absolute;right:10px;color:var(--aa-blue)}
.faq-block details[open] summary:after{content:"−"}
.faq-block details p{margin:0;padding:0 10px 22px}
.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.related-links a{display:flex;flex-direction:column;min-height:100px;padding:18px;background:#f3fafc;border:1px solid var(--aa-line);border-radius:7px;color:var(--aa-blue-dark);text-decoration:none}
.related-links a:hover{border-color:#73c1df;background:#eaf7fd}
.related-links strong{font-size:17px}
.related-links span{margin-top:5px;color:var(--aa-text);font-size:14px;line-height:1.65}
.reading-shell .related-box h2{font-size:26px}
.editorial-meta{margin:34px 0 70px;color:var(--aa-muted);font-size:14px!important;text-align:right}

/* Manufacturer pages: logos stay at their natural ratio and profile data reads vertically. */
.manufacturer-intro{display:grid;grid-template-columns:210px 1fr;gap:34px;align-items:center}
.manufacturer-logo-panel{display:grid;place-items:center;min-height:138px;padding:20px;background:#fff;border:1px solid var(--aa-line);border-radius:9px}
.manufacturer-logo-panel img{display:block;width:auto;max-width:165px;height:auto;max-height:72px;object-fit:contain;image-rendering:auto}

/* Facility pages */
.facility-intro{display:grid;grid-template-columns:105px 1fr;gap:28px;align-items:center}
.facility-hero-icon{display:grid;place-items:center;width:94px;height:94px;border-radius:24px;background:linear-gradient(145deg,#dff4fc,#f5fcff);border:1px solid #bce1ee;font-family:"Apple Color Emoji","Segoe UI Emoji",sans-serif;font-size:48px}

/* Installer profile pages */
.website-preview{margin:22px 0 28px;padding:13px;background:#f4f8fa;border:1px solid var(--aa-line);border-radius:10px}
.website-preview img{display:block;width:100%;height:auto;max-height:620px;object-fit:contain;background:#fff;border:1px solid #d6e2e8;border-radius:5px}

/* Blog index and article discovery */
.topic-grid,.featured-reading,.facility-links,.maker-text-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:22px 0}
.topic-grid article,.featured-reading article{padding:24px;background:#f7fbfd;border:1px solid var(--aa-line);border-radius:8px}
.topic-grid h3,.featured-reading h3{margin-bottom:8px}
.topic-grid p,.featured-reading p{margin:0}
.topic-grid a,.featured-reading a,.facility-links a,.maker-text-links a{color:var(--aa-blue-dark);font-weight:800;text-underline-offset:3px}
.facility-links a,.maker-text-links a{padding:17px 19px;background:#f3fafc;border:1px solid var(--aa-line);border-radius:7px;text-decoration:none}

@media(max-width:760px){
  .reading-shell{width:calc(100% - 30px)}
  .reading-shell>section,.reading-shell>aside{padding:27px 21px;border-radius:9px}
  .reading-shell h2{font-size:27px}
  .reading-shell h3{font-size:21px}
  .reading-shell p,.reading-shell li,.reading-shell dd{font-size:17px}
  .article-lead{font-size:18px!important}
  .contents-nav{padding:24px 22px}.contents-nav ol{grid-template-columns:1fr}
  .manufacturer-intro,.facility-intro{grid-template-columns:1fr}
  .manufacturer-logo-panel{width:min(210px,100%);min-height:110px;padding:15px}
  .manufacturer-logo-panel img{max-width:145px;max-height:62px}
  .facility-hero-icon{width:80px;height:80px;font-size:40px}
  .profile-rows>div{grid-template-columns:1fr}.profile-rows dt{padding:12px 16px}.profile-rows dd{padding:12px 16px}
  .category-rows article{grid-template-columns:1fr;gap:5px;padding:18px 3px}
  .related-links,.topic-grid,.featured-reading,.facility-links,.maker-text-links{grid-template-columns:1fr}
  .explain-steps article,.comparison-points article,.priority-list article{grid-template-columns:43px 1fr;padding:18px 16px;gap:13px}
  .explain-steps article>b,.comparison-points article>b,.priority-list article>b{width:39px;height:39px}
  .editorial-meta{text-align:left}
}

.editorial-v3.directory-page .hero-banner{margin-bottom:45px!important;padding-top:64px!important;padding-bottom:54px!important;background:linear-gradient(115deg,#eef9fd,#fff)!important;border:0!important}
.editorial-v3.directory-page .article-content.directory-intro{max-width:960px!important;margin:0 auto!important;padding:0 24px 45px!important;background:transparent!important;border:0!important;border-radius:0!important;box-shadow:none!important}
.editorial-v3.directory-page .article-toc{background:#f4f8fa;border:0;border-left:5px solid #6fc2df;border-radius:0}
.editorial-v3.directory-page .directory-section{padding-top:48px;border-top:1px solid var(--aa-line)}
.editorial-v3.directory-page .company-directory{gap:0 34px;border-top:2px solid var(--aa-ink)}
.editorial-v3.directory-page .company-directory article{min-height:245px;padding:27px 3px;background:#fff;border:0;border-bottom:1px solid var(--aa-line);border-radius:0;box-shadow:none}
.editorial-v3.directory-page .company-directory article:hover{box-shadow:none!important}
.editorial-v3.directory-page .directory-heading>span{background:#e8f7fc}
@media(max-width:760px){.editorial-v3.directory-page .company-directory{grid-template-columns:1fr}.editorial-v3.directory-page .company-directory article{min-height:auto}.editorial-v3.directory-page .directory-section{padding-left:18px;padding-right:18px}}

/* Editorial v3: calm, magazine-like long-form pages without stacked frames */
body.editorial-v3{background:#fff!important}
.editorial-v3 main{background:#fff}
.editorial-v3 .article-header{margin-bottom:0!important;padding-top:68px!important;padding-bottom:56px!important;background:linear-gradient(115deg,#eef9fd 0,#fff 72%)!important;border-bottom:0!important}
.editorial-v3 .article-header:after{right:6%;top:-135px;width:350px;height:350px;background:rgba(53,169,213,.08)}
.editorial-v3 .article-header .container{max-width:900px!important}
.editorial-v3 .reading-shell{width:min(900px,calc(100% - 48px));margin:0 auto;padding-top:54px}
.editorial-v3 .reading-shell>section,.editorial-v3 .reading-shell>aside{margin:0;padding:0 0 58px;background:transparent;border:0;border-bottom:1px solid #dce7ec;border-radius:0;box-shadow:none}
.editorial-v3 .reading-shell>section+section,.editorial-v3 .reading-shell>nav+section,.editorial-v3 .reading-shell>section+aside{padding-top:56px}
.editorial-v3 .reading-shell h2{position:relative;margin:0 0 25px;padding:0 0 0 20px;border:0;color:var(--aa-ink);font-size:32px;letter-spacing:.01em}
.editorial-v3 .reading-shell h2:before{content:"";position:absolute;left:0;top:.28em;width:5px;height:1.05em;border-radius:3px;background:var(--aa-blue)}
.editorial-v3 .reading-shell h3{margin:31px 0 10px;font-size:23px}
.editorial-v3 .reading-shell p{margin:0 0 21px;line-height:2.05}
.editorial-v3 .article-lead{margin-bottom:28px;font-size:21px!important;line-height:2!important}
.editorial-v3 .contents-nav{margin:46px 0 58px;padding:26px 30px;background:#f4f8fa;border:0;border-left:5px solid #6fc2df;border-radius:0}
.editorial-v3 .contents-nav ol{gap:7px 36px}
.editorial-v3 .quick-answer{margin:32px 0;padding:24px 28px;background:#eaf7fc;border:0;border-left:6px solid var(--aa-blue);border-radius:0}
.editorial-v3 .quick-answer p{margin:0}
.article-figure{margin:32px 0 42px}
.article-figure img{display:block;width:100%;max-height:480px;object-fit:cover;border-radius:3px}
.article-figure figcaption{margin-top:9px;color:var(--aa-muted);font-size:13px;line-height:1.6}
.article-figure.is-wide{margin-left:-55px;margin-right:-55px}
.reading-bridge{display:grid;grid-template-columns:90px 1fr;gap:22px;align-items:center;margin:30px 0;padding:24px 0;border-top:1px solid var(--aa-line);border-bottom:1px solid var(--aa-line)}
.reading-bridge .bridge-icon{display:grid;place-items:center;width:76px;height:76px;border-radius:50%;background:#e8f7fc;font-family:"Apple Color Emoji","Segoe UI Emoji",sans-serif;font-size:38px}
.reading-bridge strong{display:block;margin-bottom:5px;color:var(--aa-ink);font-size:20px}
.reading-bridge p{margin:0!important;font-size:16px!important;line-height:1.8!important}
.icon-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px;margin:25px 0;padding:0;list-style:none}
.icon-list li{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:start;margin:0!important;padding:19px 0;border-bottom:1px solid var(--aa-line)}
.icon-list .list-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:#e8f7fc;font-family:"Apple Color Emoji","Segoe UI Emoji",sans-serif;font-size:22px}
.icon-list strong{display:block;color:var(--aa-ink);font-size:17px}
.icon-list span:last-child{font-size:15px;line-height:1.7}
.editorial-v3 .check-panel,.editorial-v3 .term-box,.editorial-v3 .example-box,.editorial-v3 .note-box,.editorial-v3 .warning-box,.editorial-v3 .source-box,.inset-story{margin:29px 0;padding:27px 30px;background:#f5f8fa;border:0;border-radius:2px}
.editorial-v3 .warning-box{background:#fff7eb;border-left:5px solid var(--aa-orange)}
.editorial-v3 .note-box,.editorial-v3 .source-box{background:#edf8fc}
.editorial-v3 .profile-rows{border-top:2px solid var(--aa-ink)}
.editorial-v3 .profile-rows>div{border-bottom:1px solid var(--aa-line)}
.editorial-v3 .profile-rows dt{background:transparent;padding-left:4px}
.editorial-v3 .profile-rows dd{padding-right:4px}
.editorial-v3 .category-rows{border-top:2px solid var(--aa-ink)}
.editorial-v3 .category-rows article{border-bottom:1px solid var(--aa-line)}
.editorial-v3 .comparison-points,.editorial-v3 .symptom-list,.editorial-v3 .mistake-list,.editorial-v3 .choice-list{gap:0;border-top:2px solid var(--aa-ink)}
.editorial-v3 .comparison-points article,.editorial-v3 .symptom-list article,.editorial-v3 .mistake-list article,.editorial-v3 .choice-list article{background:transparent;border:0;border-bottom:1px solid var(--aa-line);border-radius:0;padding:24px 4px}
.editorial-v3 .mistake-list article,.editorial-v3 .symptom-list article,.editorial-v3 .choice-list article{border-left:0}
.editorial-v3 .explain-steps{margin:26px 0;padding:0;list-style:none;counter-reset:editorial-step}
.editorial-v3 .explain-steps>li{display:grid;grid-template-columns:58px 1fr;gap:20px;align-items:start;margin:0;padding:22px 0;border-bottom:1px solid var(--aa-line);counter-increment:editorial-step}
.editorial-v3 .explain-steps>li>b{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--aa-blue);color:#fff;font-size:0}
.editorial-v3 .explain-steps>li>b:after{content:counter(editorial-step);font-size:18px}
.editorial-v3 .explain-steps h3{margin:0 0 7px}
.editorial-v3 .explain-steps p{margin:0}
.manufacturer-intro.editorial-intro{grid-template-columns:180px 1fr;padding-bottom:48px!important}
.editorial-v3 .manufacturer-logo-panel{min-height:108px;padding:14px;background:#f6f9fa;border:0}
.editorial-v3 .manufacturer-logo-panel img{max-width:145px;max-height:58px}
.series-list{margin:25px 0;border-top:2px solid var(--aa-ink)}
.series-list article{display:grid;grid-template-columns:220px 1fr;gap:34px;align-items:center;padding:30px 0;border-bottom:1px solid var(--aa-line)}
.series-visual{display:grid;place-items:center;min-height:105px;padding:17px;background:#f6f9fa}
.series-visual img{display:block;width:auto;max-width:180px;height:auto;max-height:70px;object-fit:contain}
.series-copy h3{margin:0 0 9px!important}
.series-copy p{margin:0 0 9px!important;font-size:16px!important;line-height:1.85!important}
.series-copy .series-for{color:var(--aa-blue-dark);font-weight:800}
.website-preview{margin:32px -35px 46px;padding:0;background:transparent;border:0;border-radius:0}
.website-preview img{max-height:650px;border:1px solid #d7e3e8;border-radius:3px}
.website-preview figcaption{margin-top:9px;color:var(--aa-muted);font-size:13px}
.fact-lede{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:28px 0;padding:24px 0;border-top:2px solid var(--aa-ink);border-bottom:1px solid var(--aa-line)}
.fact-lede div+div{border-left:1px solid var(--aa-line);padding-left:24px}
.fact-lede span{display:block;color:var(--aa-muted);font-size:13px;font-weight:700}
.fact-lede strong{display:block;margin-top:5px;color:var(--aa-ink);font-size:17px;line-height:1.55}
.editorial-v3 .faq-block{border-top:2px solid var(--aa-ink)}
.editorial-v3 .faq-block summary{padding-top:23px;padding-bottom:23px}
.faq-groups h3{margin-top:42px!important;padding-bottom:9px;border-bottom:1px solid var(--aa-line)}
.editorial-v3 .related-box{margin-top:56px!important;padding-top:48px!important;background:transparent!important;border-top:1px solid var(--aa-line)!important}
.editorial-v3 .related-links a{background:#f3f8fa;border:0;border-radius:2px}
.knowledge-library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px;margin-top:28px;border-top:2px solid var(--aa-ink)}
.knowledge-library-grid>a{display:grid;grid-template-columns:58px 1fr;gap:16px;align-items:start;padding:23px 3px;border-bottom:1px solid var(--aa-line);color:var(--aa-text);text-decoration:none}
.knowledge-library-grid>a:hover strong{color:var(--aa-blue)}
.knowledge-library-grid>a>span{display:grid;place-items:center;width:50px;height:50px;border-radius:50%;background:#e8f7fc;font-family:"Apple Color Emoji","Segoe UI Emoji",sans-serif;font-size:24px}
.knowledge-library-grid small{display:block;color:var(--aa-blue-dark);font-size:13px;font-weight:800}
.knowledge-library-grid strong{display:block;margin:3px 0 4px;color:var(--aa-ink);font-size:17px;line-height:1.55}
.knowledge-library-grid p{margin:0!important;color:var(--aa-muted);font-size:14px!important;line-height:1.7!important}
.editorial-v3 .topic-grid,.editorial-v3 .featured-reading{gap:0 34px;border-top:2px solid var(--aa-ink)}
.editorial-v3 .topic-grid article,.editorial-v3 .featured-reading article{padding:25px 3px;background:transparent;border:0;border-bottom:1px solid var(--aa-line);border-radius:0}
.editorial-v3 .facility-links,.editorial-v3 .maker-text-links{gap:0 28px;border-top:2px solid var(--aa-ink)}
.editorial-v3 .facility-links a,.editorial-v3 .maker-text-links a{padding:20px 3px;background:transparent;border:0;border-bottom:1px solid var(--aa-line);border-radius:0}
.editorial-v3 .readable-table{border:0;border-top:2px solid var(--aa-ink);border-radius:0}
.editorial-v3 .readable-table th{background:#eaf4f8!important;color:var(--aa-ink)!important;border-bottom:1px solid #bcd5df!important}
.editorial-v3 .readable-table td{border:0!important;border-bottom:1px solid var(--aa-line)!important}

@media(max-width:760px){
  .editorial-v3 .article-header{padding-top:45px!important;padding-bottom:40px!important}
  .editorial-v3 .reading-shell{width:calc(100% - 34px);padding-top:38px}
  .editorial-v3 .reading-shell>section,.editorial-v3 .reading-shell>aside{padding-bottom:44px}
  .editorial-v3 .reading-shell>section+section,.editorial-v3 .reading-shell>nav+section,.editorial-v3 .reading-shell>section+aside{padding-top:43px}
  .editorial-v3 .reading-shell h2{padding-left:16px;font-size:27px}
  .editorial-v3 .reading-shell h3{font-size:21px}
  .article-figure.is-wide{margin-left:0;margin-right:0}
  .reading-bridge{grid-template-columns:64px 1fr;gap:15px}.reading-bridge .bridge-icon{width:58px;height:58px;font-size:29px}
  .icon-list{grid-template-columns:1fr}
  .manufacturer-intro.editorial-intro{grid-template-columns:1fr}
  .series-list article{grid-template-columns:1fr;gap:18px}.series-visual{justify-content:start;min-height:80px}.series-visual img{max-width:160px;max-height:58px}
  .website-preview{margin-left:0;margin-right:0}
  .fact-lede{grid-template-columns:1fr;gap:0}.fact-lede div{padding:15px 0}.fact-lede div+div{padding-left:0;border-left:0;border-top:1px solid var(--aa-line)}
  .editorial-v3 .contents-nav ol{grid-template-columns:1fr}
  .editorial-v3 .related-links{grid-template-columns:1fr}
  .knowledge-library-grid{grid-template-columns:1fr}
}