:root{color-scheme:dark;--bg:#0E1B30;--surface:#162338;--text:#EDF1F8;--muted:#B8C5D8;--accent:#C8102E;--border:#1E3260;font:18px/1.6 Barlow,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text)}
a{color:inherit;text-underline-offset:.3em}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
.skip{position:absolute;left:1rem;top:-5rem;background:var(--text);color:var(--bg);padding:.5rem;z-index:20}.skip:focus{top:1rem}
.site-header{max-width:1280px;margin:auto;padding:1.5rem 2rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);border-top:5px solid var(--accent);gap:2rem}
.brand{text-decoration:none}.brand b{font:700 1.7rem Oswald,sans-serif;color:var(--text)}
.site-header nav{display:flex;gap:1.25rem;flex-wrap:wrap}.site-header nav a{font-size:.83rem;text-decoration:none}.site-header nav a:hover{color:var(--accent)}
.section{max-width:1280px;margin:auto;padding:5rem 2rem;border-bottom:1px solid var(--border)}
.eyebrow{display:block;text-transform:uppercase;letter-spacing:.13em;font-size:.78rem;color:var(--muted);font-weight:600;margin:0 0 1.2rem}
h1,h2,h3,h4{font-family:Oswald,Arial,sans-serif;font-weight:500;line-height:1.1;margin:0 0 1.2rem}
h1{font-size:clamp(2.3rem,5vw,4rem);letter-spacing:-.02em;max-width:950px}
p{color:var(--muted);max-width:70ch;overflow-wrap:break-word}.lead{font-size:1.2rem;line-height:1.5;color:var(--text)}
.primary{display:inline-flex;align-items:center;gap:1rem;padding:.85rem 1.1rem;background:var(--accent);color:#EDF1F8;text-decoration:none;font-weight:700}.primary:hover{background:#a00d24}
.hero-actions{display:flex;gap:1.4rem;align-items:center;flex-wrap:wrap;margin-top:2rem}.secondary{font-size:.9rem}
.article-shell{max-width:1200px;margin:auto;padding:4rem 2rem}
.article-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:4rem}
.article-layout aside{align-self:start;position:sticky;top:2rem}.article-layout aside a{display:block;font-size:.83rem;margin:.65rem 0;text-decoration:none}.article-layout aside a:hover{color:var(--accent)}
.article-body{max-width:780px}.article-body h2{font-size:1.9rem;padding-top:2.5rem;scroll-margin-top:1.5rem;border-top:1px solid var(--border);margin-top:2.5rem}
.article-body h2:first-child{border-top:0;margin-top:0;padding-top:0}
.article-body h3{font-size:1.35rem;margin-top:2.2rem}.article-body p,.article-body li{color:var(--text)}.article-body li{margin:.55rem 0}
.callout{background:var(--surface);border-left:4px solid var(--accent);padding:1.1rem 1.4rem;margin:2rem 0}.callout p{margin:0;max-width:none}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin:1.8rem 0}
.stats div{background:var(--surface);padding:1.1rem 1.2rem;border-top:3px solid var(--accent)}
.stats b{display:block;font:500 2rem Oswald,sans-serif;color:var(--text)}.stats span{font-size:.85rem;color:var(--muted)}
.cards{display:grid;gap:1rem;margin:1.5rem 0}.cards article{background:var(--surface);border-top:3px solid var(--accent);padding:1.1rem 1.3rem}
.cards h4{font-size:1.2rem;margin:0 0 .5rem}.cards p{margin:.35rem 0;max-width:none;font-size:.95rem;color:var(--text)}
.timeline{border-top:1px solid var(--border);margin:1.5rem 0}.tl-row{display:grid;grid-template-columns:9rem minmax(0,1fr);gap:1.25rem;padding:.8rem 0;border-bottom:1px solid var(--border)}
.tl-when{font-family:Oswald,Arial,sans-serif;font-size:1.05rem}.tl-what{font-size:.95rem}
.sources{list-style:none;padding:0;font-size:.82rem;margin-top:1rem}.sources li{margin:.5rem 0;color:var(--muted)}.sources a{word-break:break-word}
.srchead{font-family:Oswald,Arial,sans-serif;font-size:.95rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:1.8rem 0 .3rem}
.note{font-size:.85rem;color:var(--muted)}
.help a{font-weight:600}
footer{max-width:1280px;margin:auto;display:flex;justify-content:space-between;gap:2rem;padding:2rem;font-size:.8rem;color:var(--muted);flex-wrap:wrap}
@media(max-width:850px){.site-header{flex-direction:column;align-items:flex-start;gap:1rem;padding:1.25rem}.section{padding:3rem 1.25rem}.article-shell{padding:2rem 1.25rem}.article-layout{grid-template-columns:1fr;gap:1.5rem}.article-layout aside{position:static;columns:2}.tl-row{grid-template-columns:1fr;gap:.2rem}footer{flex-direction:column}}
/* Shared main-site header, breadcrumbs, section nav */
.site-header nav a[aria-current]{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:.45em}
.crumbs{max-width:1280px;margin:auto;padding:.9rem 2rem 0;font-size:.8rem;color:var(--muted)}.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.4rem}.crumbs li+li::before{content:"\203A";margin-right:.4rem;color:var(--muted)}.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--text)}
@media(max-width:850px){.crumbs{padding:.75rem 1.25rem 0}}
.subnav{max-width:1280px;margin:auto;padding:.9rem 2rem;display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;align-items:center;border-bottom:1px solid var(--border);font-size:.83rem}.subnav a{text-decoration:none;color:var(--muted)}.subnav a:hover{color:var(--text)}.subnav a[aria-current]{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:.4em}.subnav .subnav-title{font:600 1rem Oswald,sans-serif;color:var(--text);margin-right:.5rem}.brand b{font-size:1.7rem}.cards h3{font-size:1.2rem;margin:0 0 .5rem}
@media(max-width:850px){.subnav{padding:.75rem 1.25rem}}
/* Mobile menu (hamburger), matching the Estimator/PLEX pattern */
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;background:none;border:0;cursor:pointer;padding:4px;width:40px;height:40px;margin-left:auto}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--muted);border-radius:2px;transition:transform .25s,opacity .25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:850px){.js-nav .site-header{flex-direction:row;flex-wrap:wrap;align-items:center}.js-nav .nav-toggle{display:flex}.js-nav .site-header nav{display:none;width:100%;flex-direction:column;gap:0}.js-nav .site-header.open nav{display:flex}.js-nav .site-header nav a{font-size:1rem;padding:.8rem 0;border-bottom:1px solid var(--border)}.js-nav .site-header nav a:last-child{border-bottom:0}}
@media(prefers-reduced-motion:reduce){.nav-toggle span{transition:none}}