:root{
  --ink:#17322c;--muted:#5d6f69;--paper:#fbfcf8;--card:#ffffff;
  --accent:#2f7d68;--accent2:#d8efe5;--line:#d9e3de;--warm:#f3f1e8;
  --max:1160px;--radius:18px;--shadow:0 10px 30px rgba(23,50,44,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink);line-height:1.68}
a{color:#176650;text-decoration-thickness:.08em;text-underline-offset:.15em}
a:hover{color:#0d4c3b}
img{max-width:100%;height:auto}
.wrap{width:min(calc(100% - 36px),var(--max));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,252,248,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:24px}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink);font-weight:800;letter-spacing:-.02em}
.brandmark{width:34px;height:34px;border:2px solid var(--accent);border-radius:50%;display:grid;place-items:center;color:var(--accent);font-size:19px}
nav{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
nav a{color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:650}
.hero{padding:72px 0 44px;background:linear-gradient(180deg,#eef7f2 0%,rgba(238,247,242,0) 100%)}
.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.76rem;font-weight:800;color:var(--accent)}
h1,h2,h3{line-height:1.15;letter-spacing:-.035em}
h1{font-size:clamp(2.35rem,6vw,4.6rem);max-width:930px;margin:.25em 0 .32em}
h2{font-size:clamp(1.6rem,3vw,2.45rem);margin-top:1.7em}
h3{font-size:1.22rem;margin-top:1.55em}
.lede{font-size:1.16rem;max-width:800px;color:#365049}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.card h2,.card h3{margin-top:0}
.span4{grid-column:span 4}.span6{grid-column:span 6}.span8{grid-column:span 8}.span12{grid-column:span 12}
.section{padding:52px 0}
.article{display:grid;grid-template-columns:minmax(0,760px) minmax(240px,1fr);gap:56px;align-items:start}
.article main{min-width:0}
.article aside{position:sticky;top:96px}
.breadcrumbs{font-size:.9rem;color:var(--muted);margin:24px 0 10px}
.breadcrumbs a{color:var(--muted)}
.meta{color:var(--muted);font-size:.92rem;margin:10px 0 30px}
.note,.safety,.disclosure{border-radius:14px;padding:18px 20px;margin:24px 0}
.note{background:var(--accent2);border:1px solid #c0dfd1}
.safety{background:#fff7df;border:1px solid #eddca5}
.disclosure{background:var(--warm);border:1px solid #e4dfce}
.cta{background:var(--ink);color:white!important;display:inline-block;padding:13px 18px;border-radius:999px;text-decoration:none;font-weight:800;margin:8px 8px 8px 0}
.cta.secondary{background:white;color:var(--ink)!important;border:1px solid var(--line)}
.cta-row{margin:24px 0}
.toc{font-size:.94rem}
.toc ul{padding-left:18px}
.toc li{margin:6px 0}
table{width:100%;border-collapse:collapse;margin:24px 0;background:white;border-radius:12px;overflow:hidden}
th,td{padding:13px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#edf5f1}
blockquote{border-left:4px solid var(--accent);margin:28px 0;padding:4px 0 4px 20px;color:#38544c}
.source-list li{margin-bottom:9px}
.related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}
.related a{display:block;border:1px solid var(--line);border-radius:12px;padding:14px;text-decoration:none;background:white;font-weight:700}
.footer{margin-top:70px;border-top:1px solid var(--line);padding:42px 0 55px;background:#f3f6f2}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
.footer a{display:block;margin:8px 0;color:var(--ink)}
.small{font-size:.88rem;color:var(--muted)}
.tag{display:inline-block;padding:5px 9px;border-radius:999px;background:var(--accent2);font-size:.8rem;font-weight:800;margin-right:6px}
@media(max-width:860px){
 nav{display:none}.hero{padding-top:48px}.article{grid-template-columns:1fr}.article aside{position:static}
 .span4,.span6,.span8{grid-column:span 12}.footer-grid{grid-template-columns:1fr}.related{grid-template-columns:1fr}
}