:root{--green:#0F3D2E;--green2:#1B5A44;--bg:#EEF3F0;--paper:#fff;--ink:#15201B;--muted:#56665F;--line:#D3DDD8;--red:#C8102E;--yellow:#F2C230;
--fd:"Bricolage Grotesque",system-ui,sans-serif;--fb:"Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--fb)}
a{color:var(--green2);text-underline-offset:3px}a:hover{color:var(--red)}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:9}
header.site{background:var(--green);color:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.logo{font:800 1.6rem/1 var(--fd);color:#fff;text-decoration:none;letter-spacing:-.02em;display:flex;align-items:baseline;gap:6px}
.logo small{font:600 .75rem var(--fb);background:var(--yellow);color:var(--ink);padding:2px 6px;border-radius:3px}
.logo:hover{color:#fff}
nav.main a{color:#fff;text-decoration:none;margin-left:18px;font-weight:600;font-size:.95rem}
nav.main a:hover{color:var(--yellow)}
h1,h2,h3{font-family:var(--fd);line-height:1.15;letter-spacing:-.015em}
h1{font-size:clamp(2rem,4.5vw,3.1rem);font-weight:800;margin:.3em 0 .3em}
h2{font-size:1.6rem;font-weight:700;margin:1.6em 0 .5em}
h3{font-size:1.2rem;font-weight:700;margin:1.3em 0 .4em}
.crumbs{font-size:.88rem;color:var(--muted);padding-top:22px}.crumbs a{color:var(--muted)}
.lede{font-size:1.15rem;color:var(--muted);max-width:62ch;margin-top:0}
main{padding-bottom:60px}
/* hero */
.hero{background:var(--green);color:#fff;padding:40px 0 64px}
.hero h1{max-width:18ch;color:#fff}
.hero p{color:#CFE0D8;max-width:56ch}
.search{margin-top:22px;max-width:640px;position:relative}
.search input{width:100%;font:600 1.2rem var(--fb);padding:18px 20px;border:0;border-radius:6px;background:#fff;color:var(--ink);box-shadow:0 0 0 4px rgba(242,194,48,.0)}
.search input:focus{box-shadow:0 0 0 4px var(--yellow);outline:0}
.count{font-size:.9rem;color:#CFE0D8;margin-top:10px}
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:36px 48px;margin-top:-28px}
.cat{background:var(--paper);border-top:5px solid var(--green);padding:22px 24px 18px;border-radius:0 0 6px 6px}
.cat h2{margin:0 0 4px;font-size:1.3rem;display:flex;gap:10px;align-items:center}
.cat h2 span{display:inline-grid;place-items:center;width:32px;height:32px;background:var(--bg);border-radius:50%;font-size:1rem}
.cat h2 a{color:inherit;text-decoration:none}
.cat p{margin:0 0 10px;color:var(--muted);font-size:.93rem}
.cat ul,.plain{list-style:none;padding:0;margin:0}
.cat li a{display:block;padding:6px 0;border-bottom:1px solid var(--bg);text-decoration:none;color:var(--ink)}
.cat li a:hover{color:var(--red)}
.cat li[hidden],.cat[hidden]{display:none}
.none{background:var(--paper);padding:24px;border-radius:6px;margin-top:24px}
/* calculator */
.calc-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start;margin-top:24px}
form.calc{background:var(--paper);padding:26px;border-radius:6px;border:1px solid var(--line)}
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
.inp{display:flex;align-items:stretch;border:2px solid var(--line);border-radius:5px;background:#fff;overflow:hidden}
.inp:focus-within{border-color:var(--green)}
.inp input,.inp select{flex:1;min-width:0;border:0;font:500 1.05rem var(--fb);padding:11px 12px;background:transparent;color:var(--ink)}
.inp input:focus,.inp select:focus{outline:0}
.inp .u{display:grid;place-items:center;padding:0 12px;background:var(--bg);color:var(--muted);font-size:.9rem;font-weight:600;white-space:nowrap}
.btn{display:inline-block;background:var(--red);color:#fff;border:0;border-radius:5px;padding:13px 22px;font:700 1rem var(--fb);cursor:pointer;text-decoration:none}
.btn:hover{background:#a50d26;color:#fff}
.receipt{position:sticky;top:20px;background:var(--paper);padding:26px 26px 34px;filter:drop-shadow(0 6px 14px rgba(15,61,46,.12));
-webkit-mask:conic-gradient(from -45deg at bottom,#0000,#000 1deg 89deg,#0000 90deg) 50%/18px 100%;mask:conic-gradient(from -45deg at bottom,#0000,#000 1deg 89deg,#0000 90deg) 50%/18px 100%}
.receipt h2{margin:0 0 4px;font-size:1rem;color:var(--muted);font-family:var(--fb);font-weight:600}
.receipt .row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px dashed var(--line);font-variant-numeric:tabular-nums}
.receipt .row span{color:var(--muted)}
.receipt .row strong{text-align:right}
.receipt .main{flex-direction:column;border-top:0;padding:4px 0 16px}
.receipt .main span{color:var(--ink);font-weight:600}
.receipt .main strong{text-align:left;font:800 clamp(2rem,5vw,2.8rem)/1.1 var(--fd);background:linear-gradient(transparent 62%,var(--yellow) 62%, var(--yellow) 90%,transparent 90%);display:inline;align-self:flex-start}
.receipt .note{font-size:.8rem;color:var(--muted);margin:14px 0 0}
.err{color:var(--red);font-weight:600}
.prose{max-width:70ch}
.prose p,.prose li{max-width:70ch}
.panel{background:var(--paper);border-radius:6px;padding:8px 26px 20px;margin-top:36px;border:1px solid var(--line)}
.links{columns:2;gap:30px;padding-left:18px}.links li{margin-bottom:6px;break-inside:avoid}
details{border-bottom:1px solid var(--line);padding:12px 0}
summary{font-weight:700;cursor:pointer}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
.tbl{overflow-x:auto}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
th{background:var(--bg);font-weight:700}
.cta{background:var(--green);color:#fff;border-radius:6px;padding:22px 26px;margin:30px 0}
.cta h2,.cta h3{color:#fff;margin-top:0}
.cta p{color:#CFE0D8}
.cta .btn{background:var(--yellow);color:var(--ink)}.cta .btn:hover{background:#fff}
.meta{color:var(--muted);font-size:.9rem}
.toc{background:var(--paper);border-left:4px solid var(--yellow);padding:14px 22px;margin:24px 0}
.toc ol{margin:6px 0 0;padding-left:20px}
.postlist li{padding:10px 0;border-bottom:1px solid var(--line)}
.postlist a{font-weight:600;text-decoration:none}
footer.site{background:var(--ink);color:#B9C6C0;padding:40px 0;font-size:.92rem}
footer.site a{color:#fff}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px}
footer h3{color:#fff;font-size:1rem;margin-top:0}
footer ul{list-style:none;padding:0;margin:0}footer li{margin:4px 0}
.disclaimer{font-size:.85rem;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:30px}
@media (max-width:820px){.calc-grid{grid-template-columns:1fr}.receipt{position:static}.links{columns:1}nav.main a{margin:0 14px 0 0}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}