:root{--green:#1f5a34;--green-2:#2f7d4a;--leaf:#e7f2e9;--soil:#5b4636;--ink:#1d2421;--muted:#55605a;--line:#d6ddd8;--bg:#fbfaf6;--card:#fff;--warn:#8a2c0d;--ok:#1f5a34;--radius:12px;--max:1080px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--green-2)}a:hover{color:var(--green)}
:focus-visible{outline:3px solid #f0a500;outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.5rem 1rem;z-index:10}.skip:focus{left:.5rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1rem}
header.site{background:var(--green);color:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.5rem;color:#fff;text-decoration:none;font-weight:700;font-size:1.15rem}
.brand svg{flex:none}
nav.top ul{display:flex;gap:1rem;list-style:none;margin:0;padding:0;flex-wrap:wrap}
nav.top a{color:#fff;text-decoration:none;font-size:.95rem}nav.top a:hover{text-decoration:underline}
main{padding:1.25rem 0 2.5rem}
.crumbs{font-size:.88rem;color:var(--muted);margin:.25rem 0 .75rem}.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.35rem}.crumbs li+li::before{content:"›";margin-right:.35rem}
h1{font-size:clamp(1.6rem,4vw,2.3rem);line-height:1.2;margin:.2rem 0 .6rem;color:var(--green)}
h2{font-size:1.35rem;margin:2rem 0 .6rem;color:var(--green)}
h3{font-size:1.08rem;margin:1.2rem 0 .4rem}
.lede{font-size:1.08rem;color:var(--muted);max-width:70ch}
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:1.5rem}
@media(min-width:960px){.layout{grid-template-columns:minmax(0,1fr) 300px}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem}
form.calc{display:grid;gap:.9rem}
.fields{display:grid;gap:.8rem;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
label,.label{display:block;font-weight:600;font-size:.93rem;margin-bottom:.25rem}
.hint{display:block;font-weight:400;color:var(--muted);font-size:.83rem}
input[type=number],input[type=date],input[type=text],select{width:100%;font:inherit;padding:.55rem .6rem;border:1px solid #9aa79f;border-radius:8px;background:#fff;color:var(--ink);min-height:44px}
input:invalid{border-color:var(--warn)}
fieldset{border:1px solid var(--line);border-radius:10px;padding:.6rem .8rem;margin:0}
legend{font-weight:600;font-size:.93rem;padding:0 .3rem}
.checks{display:grid;grid-template-columns:repeat(auto-fill,minmax(135px,1fr));gap:.2rem .8rem}
.checks label,.inline label{font-weight:400;display:flex;align-items:center;gap:.45rem;min-height:36px;margin:0}
.inline{display:flex;gap:1rem;flex-wrap:wrap}
input[type=checkbox],input[type=radio]{flex:none;width:20px;height:20px;accent-color:var(--green-2)}
button,.btn{text-decoration:none;display:inline-block;font:inherit;font-weight:600;background:var(--green-2);color:#fff;border:0;border-radius:8px;padding:.6rem 1.1rem;min-height:44px;cursor:pointer;justify-self:start}
button:hover{background:var(--green)}
.result{margin-top:1rem;background:var(--leaf);border-radius:var(--radius);padding:1rem;border:1px solid #c5dfcb}
.result:focus{outline:2px solid var(--green-2)}
.result.has-error{background:#fff4ef;border-color:#f0c2ae}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.7rem}
.stat{background:#fff;border-radius:10px;padding:.6rem .75rem;border:1px solid #d3e6d7}
.stat-label{display:block;font-size:.8rem;color:var(--muted)}
.stat-value{display:block;font-weight:700;font-size:1.15rem}
.stat-big .stat-value{font-size:1.6rem;color:var(--green)}
.small{font-size:.88rem;color:var(--muted)}
.warn{color:var(--warn);font-weight:600}.ok{color:var(--ok);font-weight:600}
.table-wrap{overflow-x:auto;margin:.6rem 0}
table{border-collapse:collapse;width:100%;background:#fff;font-size:.93rem}
th,td{text-align:left;padding:.45rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:#f1f5f2}
.formula{background:#fff;border-left:4px solid var(--green-2);padding:.6rem .9rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;overflow-x:auto;white-space:pre-wrap}
details{border:1px solid var(--line);border-radius:10px;background:#fff;margin:.5rem 0;padding:.2rem .9rem}
summary{cursor:pointer;font-weight:600;padding:.55rem 0;min-height:44px;display:flex;align-items:center}
details[open] summary{border-bottom:1px solid var(--line);margin-bottom:.5rem}
.sources li{margin:.3rem 0;font-size:.93rem}
.ad-slot{border:2px dashed #b7c3bb;border-radius:10px;color:#7b867f;font-size:.8rem;display:flex;align-items:center;justify-content:center;text-align:center;margin:1.25rem 0;background:repeating-linear-gradient(45deg,#fff,#fff 8px,#f6f8f6 8px,#f6f8f6 16px)}
.ad-slot.h90{min-height:100px}.ad-slot.h250{min-height:260px}.ad-slot.h600{min-height:600px}
.ad-slot[data-hidden]{display:none}
.affiliate{border:1px solid #e3d3b8;background:#fffaf0;border-radius:var(--radius);padding:1rem;margin:1.25rem 0}
.affiliate h2,.affiliate h3{margin-top:0;color:var(--soil)}
.affiliate ul{margin:.3rem 0 .5rem;padding-left:1.1rem}
.placeholder{background:#fff1c9;border-radius:4px;padding:0 .25rem;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.85em}
aside .card+.card{margin-top:1rem}
aside ul{padding-left:1.1rem;margin:.3rem 0}
.grid-tools{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));margin:1rem 0}
.tool-card{display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem;transition:border-color .15s,transform .15s}
.tool-card:hover{border-color:var(--green-2);transform:translateY(-2px)}
.tool-card strong{display:block;color:var(--green);font-size:1.05rem;margin-bottom:.25rem}
.tool-card span{color:var(--muted);font-size:.92rem}
.hero{background:linear-gradient(135deg,#e7f2e9,#f7f1e6);border-radius:16px;padding:1.5rem 1.25rem;margin:.5rem 0 1rem}
.hero p{max-width:62ch}
.pill{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:99px;padding:.15rem .65rem;font-size:.82rem;margin:.15rem .25rem .15rem 0;color:var(--muted)}
.sfg-grid{display:grid;gap:3px;max-width:420px;margin-top:.75rem}
.sq{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;border-radius:4px;color:#1d2421;border:1px solid rgba(0,0,0,.1)}
.sq.empty{background:#efe9df;color:#9b8f80}
.c1{background:#f6b8a8}.c2{background:#ffd98e}.c3{background:#b9e1b3}.c4{background:#a9d4ee}.c5{background:#d9c2ec}.c6{background:#f3c4dc}
footer.site{background:#18241d;color:#cfd8d2;padding:2rem 0;font-size:.92rem}
footer.site a{color:#e6efe9}
footer.site .cols{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
footer.site ul{list-style:none;padding:0;margin:.3rem 0}
footer.site h2{color:#fff;font-size:1rem;margin:0 0 .3rem}
.prose{max-width:72ch}
@media print{header.site,footer.site,.ad-slot,.affiliate,aside,form.calc button{display:none}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.wide{grid-column:1/-1}