:root{--bg:#141516;--surface:#222324;--panel:#2F3031;--rule:#4A4B4C;--ink:#E7E7E5;--muted:#A2A3A4;--accent:#FF5F0F;--accent-hover:#E04E05;--accent-tint:#3A2418;--font-head:"Helvetica Neue",Arial,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--font-body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto 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:1.6}
a{color:var(--accent)}
a:hover{color:var(--accent-hover)}
.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:8px 12px}
.skip-link:focus{left:8px;top:8px}
.site-header{background:var(--surface);border-bottom:3px solid var(--rule)}
.header-inner{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.wordmark{font-family:var(--font-head);font-size:clamp(20px,3vw,26px);font-weight:800;letter-spacing:.12em;color:var(--ink)}
.led-dot{display:inline-block;width:12px;height:12px;border-radius:50%;background:var(--accent);vertical-align:baseline}
.site-nav{margin-left:auto}
.nav-list{list-style:none;margin:0;padding:0;display:flex;gap:4px;flex-wrap:wrap}
.nav-item{position:relative}
.nav-link{display:block;padding:8px 10px;text-decoration:none;font-family:var(--font-head);font-size:19px;font-weight:700;color:var(--ink)}
.nav-link:hover,.nav-link:focus{color:var(--accent)}
.nav-dropdown{list-style:none;margin:0;padding:6px 0;position:absolute;left:0;top:100%;min-width:240px;background:var(--panel);border:1px solid var(--rule);box-shadow:0 8px 20px rgba(0,0,0,.5);visibility:hidden;opacity:0;z-index:20}
.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:16px}
.nav-dropdown a:hover{background:var(--surface);color:var(--accent)}
.hero-rack{max-width:1080px;margin:22px auto 0;padding:0 20px}
.wavefront{display:block;width:100%;height:auto;border:2px solid var(--rule);background:var(--surface)}
.led-ticks{height:10px;background:repeating-linear-gradient(90deg,var(--muted) 0 18px,transparent 18px 34px);opacity:.85}
.rack-panel{border:2px solid var(--rule);border-left:10px solid var(--rule);border-right:10px solid var(--rule);background:var(--panel);padding:16px 20px;position:relative}
.rack-rail{position:absolute;top:0;width:10px;height:100%}
.rack-rail.left{left:-10px}
.rack-rail.right{right:-10px}
.hero{max-width:1080px;margin:0 auto;padding:20px 20px 8px}
.hero h1{font-family:var(--font-head);font-size:clamp(30px,5.2vw,52px);line-height:1.12;margin:0 0 12px;font-weight:800}
.lede{font-size:20px;max-width:760px}
.evidence-strip{list-style:none;margin:22px 0 10px;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule)}
.evidence-item{background:var(--surface);padding:14px 16px}
.evidence-value{display:block;font-size:17px;font-weight:700}
.strip-attribution{font-size:15px;color:var(--muted)}
.buyer-instruction{font-size:19px;font-weight:700;color:var(--accent)}
.rack-rule{display:flex;align-items:center;gap:0;max-width:1080px;margin:14px auto;padding:0 20px}
.rack-rule-line{flex:1;height:2px;background:var(--accent)}
.rack-rule-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);flex:none}
.main{max-width:1080px;margin:0 auto;padding:8px 20px 30px}
.main h1{font-family:var(--font-head);font-size:clamp(30px,5.2vw,50px);line-height:1.12;margin:10px 0 12px;font-weight:800}
.main h2{font-family:var(--font-head);font-size:clamp(24px,3.6vw,32px);line-height:1.2;margin:30px 0 8px;color:var(--accent)}
.main h3{font-family:var(--font-head);font-size:22px;margin:20px 0 6px}
.main p{max-width:760px}
.breadcrumb{font-size:15px;color:var(--accent);margin:6px 0 0}
.breadcrumb a{color:var(--accent)}
.page-image{margin:20px 0 6px}
.page-image img{max-width:100%;height:auto;display:block;border:1px solid var(--rule)}
.figure-caption{font-size:15px;color:var(--muted);margin:6px 0 0}
.family-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:18px 0 6px;padding:0;list-style:none}
.family-card{background:var(--panel);border:1px solid var(--rule);border-left:6px solid var(--rule);padding:14px 16px}
.family-card h3{margin:0 0 6px}
.family-card h3 a{text-decoration:none;color:var(--accent)}
.family-card p{font-size:16px;margin:0}
.card-rule{display:block;height:2px;width:44px;background:var(--accent);margin:8px 0}
.section{margin-top:8px}
.guide-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.guide-list li{border-left:4px solid var(--accent);padding:6px 12px;background:var(--panel)}
.confirm-box{border:2px solid var(--accent);background:var(--accent-tint);padding:16px 20px;margin:28px 0;max-width:760px}
.confirm-box h2,.confirm-box h3{color:var(--accent);margin-top:0}
.confirm-box ul{margin:8px 0 0;padding-left:20px}
.note-box{border:1px solid var(--rule);background:var(--panel);padding:14px 18px;max-width:760px}
.cta-band{background:var(--panel);border:2px solid var(--accent);color:var(--ink);padding:24px 26px;margin:34px 0 8px;max-width:760px}
.cta-band h2{color:var(--accent);margin-top:0}
.cta-band p{color:var(--ink)}
.cta-button{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:10px 18px;font-family:var(--font-head);font-size:20px;margin:6px 10px 0 0}
.cta-button:hover{color:#fff;background:var(--accent-hover);text-decoration:underline}
.related-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.related-list a{display:inline-block;border:1px solid var(--rule);background:var(--panel);padding:6px 12px;text-decoration:none;font-size:16px}
.related-heading{margin-top:30px}
.inquiry-form{max-width:640px;margin:18px 0}
.form-note{border:2px solid var(--accent);background:var(--accent-tint);padding:14px 18px;max-width:640px;font-weight:700}
.form-field{margin:14px 0}
.form-field label{display:block;font-weight:700;margin-bottom:4px}
.form-field input,.form-field textarea{width:100%;padding:9px 10px;border:1px solid var(--rule);background:var(--surface);color:var(--ink);font:inherit;font-size:17px}
.form-field textarea{min-height:120px}
.form-submit{background:var(--accent);color:#fff;border:0;padding:12px 22px;font-family:var(--font-head);font-size:20px;cursor:pointer}
.form-submit:disabled{opacity:.55;cursor:not-allowed}
.blog-meta{font-family:var(--font-mono);font-size:14px;color:var(--accent)}
.site-footer{background:var(--surface);border-top:3px solid var(--rule);color:var(--ink);margin-top:30px}
.footer-inner{max-width:1080px;margin:0 auto;padding:26px 20px;display:flex;gap:26px;flex-wrap:wrap;align-items:flex-start}
.footer-note{max-width:520px;font-size:16px}
.footer-note a{color:var(--accent)}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links a{color:var(--ink)}
.footer-wordmark{font-family:var(--font-head);font-size:22px;font-weight:800;letter-spacing:.12em;color:var(--ink);margin:0}
/* Narrow widths: dropdowns stay absolutely positioned. A previous
in-flow rule let hidden dropdowns occupy full vertical space on mobile,
pushing all content below a giant nav column. */
@media(max-width:820px){.evidence-strip{grid-template-columns:1fr}.family-grid{grid-template-columns:1fr 1fr}.guide-list{grid-template-columns:1fr}.nav-dropdown{left:auto;right:0;min-width:220px}}
@media(max-width:420px){.family-grid{grid-template-columns:1fr}body{font-size:17px}.nav-link{font-size:16px;padding:6px 7px}}