:root{--bg:#ffffff;--ink:#1a2230;--muted:#5b6678;--line:#e6e9ef;--brand:#0f7b5f;--brand2:#0b5e49;--accent:#f4a100;--card:#f8fafc}
*{box-sizing:border-box}
body{margin:0;font:17px/1.65 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:900px;margin:0 auto;padding:0 18px}
header.site{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:5}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 18px}
.brand{font-weight:800;font-size:19px;color:var(--brand2);letter-spacing:-.3px}
.brand span{color:var(--accent)}
nav.main a{display:inline-block;margin-left:16px;color:var(--ink);font-size:15px;font-weight:600}
nav.main a:hover{color:var(--brand)}
.hero{background:linear-gradient(135deg,#0f7b5f,#0b5e49);color:#fff;padding:46px 0}
.hero h1{margin:0 0 8px;font-size:34px;letter-spacing:-.5px}
.hero p{margin:0;opacity:.92;font-size:19px;max-width:640px}
h1,h2,h3{line-height:1.25;letter-spacing:-.3px}
main{padding:34px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:22px 0}
.card{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--card)}
.card h3{margin:.1em 0 .3em;font-size:18px}
.card p{margin:.2em 0;color:var(--muted);font-size:15px}
.btn{display:inline-block;background:var(--accent);color:#1a2230;font-weight:700;padding:9px 16px;border-radius:9px;margin-top:6px}
.btn:hover{text-decoration:none;filter:brightness(1.05)}
.btn.sec{background:#fff;border:1px solid var(--line);color:var(--brand2)}
article{max-width:760px}
article h1{font-size:31px;margin:0 0 6px}
article h2{font-size:23px;margin:1.6em 0 .4em;border-top:1px solid var(--line);padding-top:1em}
article h3{font-size:19px;margin:1.2em 0 .3em}
article p,article li{color:#28313f}
.lead{font-size:19px;color:var(--muted)}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left}
th{background:var(--card)}
.pick{border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:10px;padding:14px 16px;margin:16px 0;background:#fff}
.pick .tag{display:inline-block;background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:2px 9px;border-radius:20px;text-transform:uppercase;letter-spacing:.4px}
.pick h3{margin:.4em 0 .2em}
.meta{color:var(--muted);font-size:14px}
.disc{background:#fff8e6;border:1px solid #f3e2b3;border-radius:9px;padding:11px 14px;font-size:14px;color:#6b5a1f;margin:16px 0}
footer.site{border-top:1px solid var(--line);margin-top:40px;padding:26px 0;color:var(--muted);font-size:14px}
footer a{color:var(--muted);margin-right:14px}
.calc label{display:block;margin:12px 0 4px;font-weight:600}
.calc input,.calc select{width:100%;padding:9px;border:1px solid var(--line);border-radius:8px;font-size:16px}
.calc .row{display:flex;gap:10px;align-items:end;margin:8px 0}
.calc .row>div{flex:1}
#result{margin-top:18px;padding:16px;border-radius:10px;background:var(--card);border:1px solid var(--line);font-size:17px}
@media(max-width:560px){.hero h1{font-size:27px}nav.main a{margin-left:10px}}