:root{--paper:#fbf8f1;--ink:#1f2626;--soft:#5b6461;--rule:#d9d2c3;--ox:#8a1c2b;--sage:#3d6656;--card:#fffdf8;--hi:#f4e3e3;--lo:#e2ece6}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.62 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-x:hidden}
a{color:var(--ox)}
a:hover{color:var(--sage)}
.wrap{max-width:46rem;margin:0 auto;padding:0 16px}
header.top{border-bottom:3px double var(--rule);background:var(--card)}
header.top .wrap{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem 1.2rem;padding-top:.8rem;padding-bottom:.7rem}
.brand{font:700 1.15rem/1.2 Charter,"Iowan Old Style","Palatino Linotype",Georgia,serif;color:var(--ink);text-decoration:none;letter-spacing:.01em}
.brand span{color:var(--ox)}
nav.sections{display:flex;flex-wrap:wrap;gap:.2rem .9rem;font-size:.9rem}
nav.sections a{color:var(--soft);text-decoration:none}
nav.sections a:hover,nav.sections a[aria-current]{color:var(--ox);text-decoration:underline}
main{padding:1.6rem 0 2.4rem}
h1,h2,h3{font-family:Charter,"Iowan Old Style","Palatino Linotype",Georgia,serif;line-height:1.22;color:var(--ink)}
h1{font-size:2rem;margin:.3rem 0 .7rem}
h2{font-size:1.38rem;margin:2.2rem 0 .6rem;padding-top:.6rem;border-top:1px solid var(--rule)}
h3{font-size:1.08rem;margin:1.3rem 0 .3rem}
.crumbs{font-size:.85rem;color:var(--soft)}
.crumbs a{color:var(--soft)}
.lede{font-size:1.12rem}
.byline{font-size:.88rem;color:var(--soft);border-left:3px solid var(--ox);padding-left:.6rem;margin:.9rem 0 1.4rem}
sup.cite{font-size:.7em;line-height:0;white-space:nowrap}
sup.cite a{text-decoration:none;color:var(--sage)}
.analyte dl{margin:.4rem 0 0;display:grid;gap:.55rem}
.analyte dt{font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--soft)}
.analyte dd{margin:0;padding:.55rem .8rem;background:var(--card);border:1px solid var(--rule);border-radius:4px}
.analyte dd.hi{border-left:4px solid var(--ox);background:var(--hi)}
.analyte dd.lo{border-left:4px solid var(--sage);background:var(--lo)}
.example{background:var(--card);border:1px dashed var(--soft);padding:.4rem 1rem;border-radius:4px}
.index{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:.8rem;margin:1rem 0}
.index section{background:var(--card);border:1px solid var(--rule);border-top:3px solid var(--ox);padding:.6rem .9rem;border-radius:4px}
.index h3{margin:.1rem 0 .4rem}
.index ul{margin:0;padding-left:1.1rem;font-size:.95rem}
.vet{background:#1f2626;color:#f3efe6;padding:.4rem 1.1rem 1rem;border-radius:6px;margin-top:2rem}
.vet h2{color:#f3efe6;border-top:none}
.vet a{color:#f5c7cc}
.faq h3{margin-top:1.1rem}
ol.sources{font-size:.86rem;padding-left:1.4rem;overflow-wrap:anywhere}
ol.sources li{margin:.35rem 0}
footer{border-top:3px double var(--rule);padding:1.2rem 0 2rem;font-size:.88rem;color:var(--soft)}
footer p{margin:.3rem 0}
@media (max-width:600px){body{font-size:16px}h1{font-size:1.6rem}h2{font-size:1.22rem}}