:root{--navy:#0A1628;--orange:#F97316;--orange-d:#EA580C;--ink:#0A1628;--muted:#4B5563;--line:#E5E7EB;--soft:#F9FAFB;--green:#16A34A}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--orange-d)}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
.wide{max-width:1100px}
header.site{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
header.site img{height:34px;display:block}
header.site nav a{color:var(--muted);text-decoration:none;font-weight:500;margin-left:22px;font-size:15px}
header.site nav a.btn{background:var(--orange);color:#fff;padding:9px 16px;border-radius:8px}
.hero{background:var(--navy);color:#fff;padding:56px 0 44px}
.hero .eyebrow{color:var(--orange);font-weight:600;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.hero h1{font-size:clamp(28px,4vw,40px);line-height:1.2;margin:10px 0 12px;font-weight:700}
.hero p.meta{color:#9CA3AF;font-size:14px;margin:0}
.hero p.lede{color:#D1D5DB;font-size:18px;margin:0 0 6px}
article{padding:36px 0 20px}
.tldr{background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:8px;padding:18px 20px;margin:0 0 28px}
.tldr strong{display:block;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--orange-d);margin-bottom:6px}
.tldr p{margin:0}
article h2{font-size:24px;line-height:1.3;margin:36px 0 10px}
article h3{font-size:18px;margin:24px 0 6px}
article p,article li{font-size:17px;color:#1F2937}
article li{margin:6px 0}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;display:block;overflow-x:auto}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--soft);font-weight:600}
.faq h2{margin-top:44px}
.faq details{border:1px solid var(--line);border-radius:8px;padding:14px 18px;margin:10px 0}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:10px 0 0}
.cta{background:var(--navy);color:#fff;border-radius:12px;padding:28px;margin:40px 0 10px}
.cta h2{color:#fff;margin:0 0 8px;font-size:22px}
.cta p{color:#D1D5DB;margin:0 0 16px}
.cta a{display:inline-block;background:var(--orange);color:#fff;text-decoration:none;font-weight:600;padding:12px 20px;border-radius:8px}
.related{border-top:1px solid var(--line);padding:24px 0 8px}
.related h2{font-size:18px;margin:0 0 8px}
.cards{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));padding:36px 0 60px}
.card{border:1px solid var(--line);border-radius:12px;padding:22px;text-decoration:none;color:var(--ink);display:block;transition:border-color .15s}
.card:hover{border-color:var(--orange)}
.card h2{font-size:19px;line-height:1.35;margin:0 0 8px}
.card p{color:var(--muted);margin:0;font-size:15px}
.featured{margin:0 0 28px}.featured img{width:100%;height:auto;border-radius:12px;display:block;border:1px solid var(--line)}
.diagram{margin:22px 0 26px;padding:18px;border:1px solid var(--line);border-radius:12px;background:#fff}.diagram svg{width:100%;height:auto;display:block}.diagram figcaption{color:var(--muted);font-size:14px;margin-top:10px;text-align:center}
.card img{width:100%;height:auto;border-radius:8px;margin-bottom:14px;display:block}
footer.site{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:14px;margin-top:30px}
footer.site a{color:var(--muted);margin-right:16px}
@media (max-width:640px){header.site nav a:not(.btn){display:none}}