:root{
  --bg:#ffffff; --bg-alt:#f4f7fa; --ink:#0f1c2b; --muted:#4a5a6b; --line:#dde5ed;
  --brand:#0b2540; --accent:#0f8b8d; --accent-ink:#ffffff;
  --radius:12px; --max:760px; --max-wide:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:#fff;padding:8px;z-index:10}

header.site{border-bottom:1px solid var(--line);background:var(--bg)}
header.site .bar{max-width:var(--max-wide);margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--brand);text-decoration:none}
.logo svg{width:28px;height:28px}
header.site nav a{color:var(--muted);text-decoration:none;margin-left:22px;font-size:15px}
header.site nav a:hover{color:var(--ink)}
@media (max-width:760px){header.site nav a:not(.btn){display:none}}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:12px 20px;border-radius:8px;text-decoration:none;font-weight:600;font-size:16px}
.btn.small{padding:8px 14px;font-size:14px}
header.site nav .btn{margin-left:22px;color:var(--accent-ink)}

main{max-width:var(--max);margin:0 auto;padding:28px 20px 64px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(30px,4.2vw,42px);line-height:1.15;color:var(--brand);margin:0 0 12px}
.meta{font-size:14px;color:var(--muted);margin:0 0 28px}
.lead{font-size:20px;color:var(--ink);margin:0 0 28px}
h2{font-size:clamp(23px,2.8vw,29px);line-height:1.25;color:var(--brand);margin:44px 0 12px}
h3{font-size:20px;color:var(--brand);margin:28px 0 8px}
p,ul,ol{margin:0 0 16px}
li{margin-bottom:6px}
.summary{background:var(--bg-alt);border-left:4px solid var(--accent);border-radius:8px;padding:18px 22px;margin:0 0 32px}
.summary h2{margin-top:0;font-size:20px}
.summary ul{margin:0}
.note{background:#fff8ec;border-left:4px solid #b4580a;border-radius:8px;padding:14px 18px;font-size:16px}
.table-wrap{overflow-x:auto;margin:0 0 20px}
table{border-collapse:collapse;width:100%;font-size:16px}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--bg-alt);color:var(--brand)}
dl.glossary dt{font-weight:700;color:var(--brand);margin-top:18px}
dl.glossary dd{margin:4px 0 0;color:var(--ink)}
.letters{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 24px}
.letters a{display:inline-block;min-width:32px;text-align:center;padding:4px 8px;border:1px solid var(--line);border-radius:6px;text-decoration:none;font-size:15px}
details{border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;color:var(--brand)}
details p{margin:10px 0 0}
.cta{background:var(--brand);color:#fff;border-radius:14px;padding:28px;margin:44px 0 8px}
.cta h2{color:#fff;margin-top:0}
.cta p{color:#d2deea}
.related{border-top:1px solid var(--line);margin-top:40px;padding-top:20px}
.sources{font-size:15px}
footer{border-top:1px solid var(--line);padding:32px 20px;font-size:14px;color:var(--muted)}
footer .wrap{max-width:var(--max-wide);margin:0 auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer a{color:var(--muted)}
.disclaimer{font-size:13px;max-width:640px}