:root{--ink:#1d2a33;--muted:#5b6b75;--bg:#fff;--soft:#f3f7f9;--line:#dbe4e9;--brand:#0b6e8a;--brand-d:#08546a;--warn:#9a5b00;--ok:#2f7d32;--bad:#b3261e}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:860px;margin:0 auto;padding:0 18px}
a{color:var(--brand)}a:hover{color:var(--brand-d)}
.site-header{border-bottom:1px solid var(--line);background:#fff}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding-top:12px;padding-bottom:12px}
.brand{font-weight:700;font-size:1.15rem;text-decoration:none;color:var(--ink)}
.main-nav a{margin-left:14px;text-decoration:none;font-size:.95rem}
.main-nav a:first-child{margin-left:0}
main{padding:18px 0 40px}
h1{font-size:1.85rem;line-height:1.25;margin:.4em 0}
h2{font-size:1.35rem;margin-top:1.8em;border-bottom:1px solid var(--line);padding-bottom:.2em}
h3{font-size:1.08rem;margin:.2em 0 .4em}
.lede{font-size:1.08rem;color:#2b3a44}
.muted,.note,.tag{color:var(--muted);font-size:.92rem}
.crumbs{font-size:.88rem;color:var(--muted)}
.verified{display:inline-block;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:4px 10px;font-size:.9rem;margin:0}
.toc{font-size:.9rem;background:var(--soft);padding:8px 12px;border-radius:6px;margin:14px 0}
.card{border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin:10px 0;background:#fff}
.card p{margin:.35em 0}
.labs{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:700px){.labs{grid-template-columns:1fr 1fr}}
.badges{display:flex;flex-wrap:wrap;gap:6px}
.badge{font-size:.78rem;border:1px solid var(--line);border-radius:999px;padding:1px 8px;background:var(--soft)}
.mail-yes{border-color:var(--ok);color:var(--ok)}
.mail-no{border-color:var(--bad);color:var(--bad)}
.mail-unknown{border-color:var(--warn);color:var(--warn)}
ul.contaminants{list-style:none;padding:0}
ul.contaminants li{padding:8px 0;border-bottom:1px solid var(--line)}
.lvl{display:inline-block;font-size:.74rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em;border-radius:4px;padding:1px 6px;margin-right:4px;background:#eee}
.lvl-high{background:#fde2e0;color:var(--bad)}.lvl-moderate{background:#fff1d6;color:var(--warn)}
.lvl-low{background:#e3f2e4;color:var(--ok)}.lvl-local{background:#e6eefc;color:#2a4d9a}.lvl-unknown{background:#eee;color:#555}
table{border-collapse:collapse;width:100%;font-size:.94rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
th{background:var(--soft)}
sup a{text-decoration:none;font-size:.75em}
ol.sources{font-size:.88rem;word-break:break-word}
ul.unverified li{color:#6a4a00}
.aff-slot{border:2px dashed var(--brand);border-radius:8px;padding:12px 14px;margin:20px 0;background:#f2fafc}
.aff-label{font-weight:700;margin:0 0 .3em}
.aff-note{font-size:.8rem;color:var(--muted)}
.btn{display:inline-block;background:var(--brand);color:#fff;border-radius:6px;padding:6px 12px;text-decoration:none}
.btn-disabled{background:#9fb3bb;cursor:not-allowed}
.hero{padding:10px 0}
.filter{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;background:var(--soft);padding:10px 12px;border-radius:8px}
.filter label{font-size:.88rem;color:var(--muted)}
.filter input,.filter select{font:inherit;padding:6px 8px;border:1px solid var(--line);border-radius:6px;min-width:0}
.filter input{flex:1 1 200px}
.county-list,.state-list{padding-left:0;list-style:none}
.county-list li{padding:10px 0;border-bottom:1px solid var(--line)}
.state-list li{display:inline-block;margin:0 12px 6px 0}
.site-footer{border-top:1px solid var(--line);background:var(--soft);font-size:.88rem;color:var(--muted);padding:14px 0}