:root{--bg:#ffffff;--text:#1d2733;--quiet:#5b6673;--line:#dfe3e8;--accent:#1f5fae;--brand:#14283F;--card:#f5f7f9}
@media (prefers-color-scheme:dark){:root{--bg:#10161d;--text:#e6eaef;--quiet:#9aa5b1;--line:#2a333d;--accent:#7fb2ff;--brand:#0b1622;--card:#17202a}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
header{background:var(--brand);color:#fff}
header .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding-top:14px;padding-bottom:14px}
header a.home{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:20px}
header img{width:36px;height:36px;border-radius:8px}
header nav{margin-left:auto;display:flex;gap:16px;flex-wrap:wrap;font-size:15px}
header nav a{color:#dbe6f3;text-decoration:none}
header nav a:hover,header nav a[aria-current]{color:#fff;text-decoration:underline}
.wrap{max-width:820px;margin:0 auto;padding:0 16px}
main{padding:28px 0 48px}
h1{font-size:30px;line-height:1.25;margin:0 0 8px}
h2{font-size:21px;margin:32px 0 8px;padding-top:8px;border-top:1px solid var(--line)}
.effective,.lead{color:var(--quiet)}
.table{overflow-x:auto;margin:12px 0}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{text-align:left;vertical-align:top;padding:8px 10px;border-bottom:1px solid var(--line)}
th{background:var(--card)}
.hero{padding:16px 0 8px}
.hero h1{font-size:36px}
.tag{font-size:19px;color:var(--quiet);margin:0 0 20px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px;margin:20px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.card h3{margin:0 0 4px;font-size:17px}
.card p{margin:0;color:var(--quiet);font-size:15px}
footer{border-top:1px solid var(--line);color:var(--quiet);font-size:14px}
footer .wrap{padding-top:18px;padding-bottom:28px;display:flex;flex-wrap:wrap;gap:8px 18px}
footer a{color:var(--quiet)}
@media (max-width:520px){header nav{margin-left:0;width:100%}h1{font-size:26px}.hero h1{font-size:30px}}