:root{--bg:#F2F3F5;--surface:#E8EAED;--ink:#1D2126;--primary:#26292F;--accent:#C8501B;--secondary:#5C6670;--line:#D3D7DC;--dark:#14161A;--dark-ink:#EDEFF2;--font-head:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Liberation Sans",sans-serif;--font-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Liberation Sans",sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:18px;line-height:1.62}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
a:hover{color:var(--primary)}
.skip-link{position:absolute;left:-999px;top:0;background:var(--dark);color:#fff;padding:8px 12px;z-index:60}
.skip-link:focus{left:8px;top:8px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.topbar{background:var(--dark);color:var(--dark-ink);font-size:15px}
.topbar-in{display:flex;justify-content:space-between;gap:16px;padding-top:7px;padding-bottom:7px;flex-wrap:wrap}
.topbar a{color:#fff;text-decoration:none}
.site-header{background:var(--surface);border-bottom:3px solid var(--primary);position:relative}
.header-in{display:flex;align-items:center;gap:18px;padding-top:12px;padding-bottom:12px}
.brand{text-decoration:none;color:var(--ink);flex:0 0 auto}
.wordmark{font-family:var(--font-head);font-size:clamp(22px,2.2vw,27px);font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);display:block;line-height:1.1}
.wordmark::after{content:"";display:block;height:4px;width:72px;background:var(--accent);margin-top:4px}
.brand-sub{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--secondary)}
.site-nav{margin-left:auto;min-width:0}
.nav-list{list-style:none;margin:0;padding:0;display:flex;gap:2px;flex-wrap:nowrap}
.nav-item{position:relative}
.nav-item>a{display:block;padding:8px 8px;text-decoration:none;font-family:var(--font-head);font-weight:700;font-size:15px;color:var(--ink);white-space:nowrap}
.nav-item>a:hover,.nav-item>a:focus{color:var(--accent)}
.nav-dropdown{list-style:none;margin:0;padding:6px 0;position:absolute;left:0;top:100%;min-width:230px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 20px rgba(20,22,26,.18);visibility:hidden;opacity:0;z-index:30}
.nav-item:hover .nav-dropdown,.nav-item:focus-within .nav-dropdown{visibility:visible;opacity:1}
.nav-dropdown a{display:block;padding:7px 14px;text-decoration:none;color:var(--ink);font-size:15px}
.nav-dropdown a:hover{background:var(--surface);color:var(--accent)}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:11px 20px;font-family:var(--font-head);font-weight:700;font-size:17px;border:2px solid var(--accent)}
.btn:hover{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn.ghost:hover{background:var(--primary);color:#fff}
.header-in>a.btn{margin-left:8px;padding:9px 16px;font-size:16px;white-space:nowrap}
.burger{display:none;cursor:pointer;margin-left:auto;padding:10px 6px}
.burger span{display:block;width:26px;height:3px;background:var(--primary);margin:5px 0}
#navtoggle{position:absolute;opacity:0;pointer-events:none}
.mobilemenu{display:none}
#navtoggle{position:absolute;opacity:0;pointer-events:none}
.steel-band{background-color:var(--dark);background-image:radial-gradient(circle,#3A3F46 1.6px,transparent 1.7px);background-size:14px 14px;border-bottom:2px solid var(--accent)}
.band-index{height:26px}.band-category{height:18px}.band-series{height:14px}.band-detail{height:16px}.band-compare{height:12px}.band-guide{height:12px}.band-structure{height:10px}.band-blog{height:20px}
.hero{padding:30px 0 4px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:34px;align-items:start}
.kicker{font-family:var(--font-head);font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}
.hero h1,.main h1{font-family:var(--font-head);font-size:clamp(27px,3.4vw,40px);font-weight:800;line-height:1.16;margin:0 0 12px;text-transform:uppercase;letter-spacing:.01em}
.sig-line{border-left:5px solid var(--accent);background:var(--surface);padding:10px 14px;font-size:17px;font-weight:600;color:var(--primary);margin:0 0 16px;max-width:820px}
.lede{font-size:20px;margin:0 0 16px;max-width:780px}
.page-image{margin:0}
.page-image img{width:100%;border:1px solid var(--line)}
.page-image figcaption{font-size:15px;color:var(--secondary);margin:6px 0 0}
.evidence-strip{list-style:none;margin:20px 0 6px;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.evidence-item{background:#fff;padding:12px 14px}
.evidence-item>span:first-child{display:block;font-family:var(--font-head);font-size:17px;font-weight:800;color:var(--primary);line-height:1.3;text-transform:uppercase;letter-spacing:.02em}
.evidence-item>span+span{display:block;font-size:14px;color:var(--secondary)}
.main{padding-top:14px;padding-bottom:10px}
.main h2{font-family:var(--font-head);font-size:clamp(23px,3vw,30px);font-weight:800;line-height:1.22;margin:32px 0 8px;color:var(--primary);text-transform:uppercase;letter-spacing:.01em}
.main h3{font-family:var(--font-head);font-size:21px;font-weight:700;margin:20px 0 6px}
.main p{max-width:780px}
.sec-band{margin:22px -20px 0;padding:4px 20px 14px}
.sec-band:nth-of-type(even){background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-band>h2:first-child{margin-top:14px}
.sec-link{font-weight:700}
.family-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:10px 0;padding:0;list-style:none}
.family-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-top:5px solid var(--primary)}
.family-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.family-card h3{font-family:var(--font-head);font-size:19px;font-weight:800;margin:0;padding:13px 15px 0;text-transform:uppercase}
.family-card h3 a{text-decoration:none;color:var(--primary)}
.family-card p{font-size:16px;line-height:1.45;margin:0;padding:4px 15px 15px}
.spec-table{border-collapse:collapse;width:100%;max-width:980px;margin:14px 0;background:#fff;table-layout:fixed}
.spec-table th,.spec-table td{overflow-wrap:break-word}
.spec-table caption{text-align:left;font-family:var(--font-head);font-weight:700;padding:6px 0}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:9px 12px;text-align:left;font-size:16px;vertical-align:top}
.spec-table th{background:var(--primary);color:#fff;font-family:var(--font-head);font-size:15px;text-transform:uppercase;letter-spacing:.04em}
.spec-table td:first-child{font-weight:700}
.check-list{margin:8px 0 8px;padding-left:22px;max-width:780px}
.check-list li{margin:5px 0}
.related{margin:30px 0 6px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;list-style:none;margin:8px 0;padding:0}
.related-card{background:var(--dark);padding:16px 18px}
.related-card a{color:#fff;text-decoration:none;font-family:var(--font-head);font-weight:700;font-size:17px}
.related-card p{color:var(--dark-ink);font-size:15px;margin:6px 0 0}
.cta-band{background:var(--primary);color:#fff;padding:26px max(20px,calc((100% - 1180px)/2 + 20px));margin:36px 0 10px}
.cta-band h2{color:#fff;margin:0 0 8px;font-family:var(--font-head);font-size:clamp(22px,2.8vw,28px);font-weight:800;text-transform:uppercase}
.cta-band p{color:#fff;max-width:780px;margin:0 0 14px}
.cta-band .btn{background:var(--accent);border-color:var(--accent)}
.cta-band .btn:hover{background:var(--dark);border-color:var(--dark)}
.blog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;list-style:none;margin:10px 0;padding:0}
.blog-card{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column}
.blog-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.blog-card div{padding:14px 16px 16px}
.blog-card h3{margin:0 0 6px;font-size:20px}
.blog-card h3 a{text-decoration:none;color:var(--primary)}
.blog-card p{font-size:16px;margin:0}
.post-date{font-family:var(--font-mono);font-size:14px;color:var(--secondary)}
.inquiry-form{background:#fff;border:1px solid var(--line);padding:20px;max-width:760px;margin:14px 0}
.inquiry-form label{display:block;font-family:var(--font-head);font-weight:700;font-size:16px;margin:14px 0 5px}
.inquiry-form label:first-of-type{margin-top:0}
.inquiry-form input[type=text],.inquiry-form input[type=email],.inquiry-form textarea{width:100%;padding:10px 12px;border:1px solid var(--secondary);font-size:17px;font-family:var(--font-body);background:#fff}
.inquiry-form textarea{min-height:110px}
.inquiry-form .req{color:var(--accent)}
.form-note{font-size:15px;color:var(--secondary)}
.site-footer{background:var(--dark);color:var(--dark-ink);margin-top:44px;padding:30px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:24px}
.site-footer h3{color:#fff;font-family:var(--font-head);font-size:16px;text-transform:uppercase;letter-spacing:.06em;margin:0 0 10px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:5px 0}
.site-footer a{color:var(--dark-ink);text-decoration:none;font-size:16px}
.site-footer a:hover{color:#fff}
.footer-brand .wordmark{color:#fff}
.footer-bottom{border-top:1px solid #33373D;margin-top:22px;padding-top:14px;font-size:15px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.breadcrumb{font-size:15px;color:var(--secondary);margin:10px 0 0}
.breadcrumb a{color:var(--secondary)}
@media (max-width:900px){
.hero-grid{grid-template-columns:1fr}
.family-grid,.related-grid{grid-template-columns:1fr 1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.evidence-strip{grid-template-columns:1fr 1fr}
.site-nav{display:none}
.header-in .btn{display:none}
.burger{display:block}
.footer-grid>*{min-width:0}
.site-footer a{overflow-wrap:anywhere}
.topbar-in{flex-wrap:wrap;row-gap:2px}
.topbar-in a{overflow-wrap:anywhere}
#navtoggle:checked ~ .mobilemenu{display:block}
.mobilemenu{background:#fff;border-top:1px solid var(--line);padding:10px 20px 16px}
.mobilemenu a{display:block;padding:6px 0;text-decoration:none;color:var(--ink);font-weight:600}
.mobilemenu .sub a{padding-left:18px;font-weight:400;font-size:16px}
}
@media (max-width:560px){
.family-grid,.related-grid,.blog-grid{grid-template-columns:1fr}
body{font-size:17px}
}