:root{--ink:#14231C;--leaf:#1F6F4A;--leaf-d:#154D34;--citrus:#F2B632;--berry:#A62B54;--mist:#EAF2EC;--paper:#F8FAF7;--line:#D5E1D8;--muted:#52665B;--r:10px;
--serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;--sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
@media (prefers-color-scheme:dark){:root{--ink:#EAF2EC;--paper:#0F1A14;--mist:#16261D;--line:#2B4034;--muted:#A3B8AB;--leaf:#5BC28D;--leaf-d:#7ED6A8;--berry:#F08AAA}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--sans)}
img,svg{max-width:100%}
a{color:var(--leaf);text-underline-offset:3px}
a:hover{color:var(--leaf-d)}
:focus-visible{outline:3px solid var(--citrus);outline-offset:2px;border-radius:4px}
.wrap{width:min(1120px,100% - 40px);margin-inline:auto}
.narrow{max-width:760px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 14px;z-index:99;border-radius:6px}
.skip:focus{left:8px}
h1,h2,h3{font-family:var(--serif);line-height:1.18;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.lead{font-size:1.15rem;color:var(--muted);max-width:60ch}
.sub,.muted{color:var(--muted)}
.meta{color:var(--muted);font-size:.9rem}
.site-header{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:20}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font:700 1.4rem var(--serif);color:var(--ink);text-decoration:none}
.brand.small{font-size:1.2rem}
.dot{width:22px;height:22px;border-radius:50%;background:var(--leaf);box-shadow:inset 0 0 0 5px var(--paper),inset 0 0 0 11px var(--citrus);display:inline-block}
nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
nav a{color:var(--ink);text-decoration:none;font-weight:600}
nav a:hover{color:var(--leaf)}
.hero{background:var(--mist);border-bottom:1px solid var(--line);padding:56px 0}
.hgrid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.finder{display:flex;gap:8px;margin:24px 0 16px;flex-wrap:wrap}
input,select,button{font:inherit}
input[type=search],input[type=number],select{width:100%;padding:11px 12px;border:1.5px solid var(--line);border-radius:var(--r);background:var(--paper);color:var(--ink)}
.finder input{flex:1 1 220px;width:auto}
button,.btn{background:var(--leaf);color:#fff;border:0;border-radius:var(--r);padding:11px 20px;font-weight:700;cursor:pointer}
@media (prefers-color-scheme:dark){button,.btn{color:#08130D}}
button:hover{background:var(--leaf-d)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.chips a,.chip{border:1.5px solid var(--leaf);color:var(--leaf);background:transparent;border-radius:999px;padding:4px 14px;font-size:.9rem;font-weight:600;text-decoration:none}
.chip.on,.chips a:hover{background:var(--leaf);color:#fff}
.block{padding:56px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px;margin-top:24px}
.card{background:var(--paper);border:1.5px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--leaf);text-decoration:underline}
.card p{color:var(--muted);font-size:.97rem}
.card .meta{margin-top:auto;margin-bottom:0}
.tag{color:var(--berry);font-weight:700;font-size:.88rem;margin-bottom:.4em}
.more{margin-top:24px;font-weight:700}
.band{background:var(--ink);color:var(--paper);padding:56px 0}
@media (prefers-color-scheme:dark){.band{background:#16261D;color:#EAF2EC}}
.band a{color:var(--citrus)}
.split{display:grid;grid-template-columns:1fr 1.2fr;gap:48px}
.steps{margin:0;padding-left:1.2em}
.steps li{margin-bottom:14px}
.resource{border-top:1px solid var(--line)}
/* Calculator */
.calc{background:var(--paper);border:2px solid var(--leaf);border-radius:14px;padding:22px}
.calc h2,.calc h3{font-size:1.3rem}
.calc .row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
.calc .row.one{grid-template-columns:1fr}
.calc label{display:block;font-weight:600;font-size:.9rem;margin-bottom:4px}
.seg{display:inline-flex;border:1.5px solid var(--leaf);border-radius:var(--r);overflow:hidden;margin-bottom:14px}
.seg button{background:transparent;color:var(--leaf);border-radius:0;padding:7px 16px}
.seg button[aria-pressed=true]{background:var(--leaf);color:#fff}
.err{color:var(--berry);font-weight:600;min-height:1.4em;margin:8px 0 0}
.out{margin-top:18px;border-top:1.5px dashed var(--line);padding-top:16px}
.big{font:700 2.6rem/1 var(--serif);color:var(--leaf)}
.big small{font:600 1rem var(--sans);color:var(--muted)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin:14px 0}
.stat{background:var(--mist);border-radius:var(--r);padding:10px 12px}
.stat b{display:block;font-size:1.15rem}
.stat span{font-size:.82rem;color:var(--muted)}
.bar-macro{display:flex;height:14px;border-radius:7px;overflow:hidden;margin:12px 0 6px}
.bar-macro i{display:block}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.85rem;color:var(--muted)}
.legend span::before{content:"";display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;background:var(--c)}
.note{font-size:.85rem;color:var(--muted)}
.full .out{margin-top:24px}
.full{max-width:820px}
/* Articles */
.article{padding:28px 0 64px;display:grid;grid-template-columns:minmax(0,1fr);}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:12px}
.crumbs a{color:var(--muted)}
.article article{max-width:760px}
.toc{background:var(--mist);border-radius:var(--r);padding:16px 22px;margin:24px 0}
.toc ol{margin:0;padding-left:1.2em}
.fh{font-weight:700;margin-bottom:.4em}
.prose h2{margin-top:1.8em}
.prose ul,.prose ol{padding-left:1.2em}
.prose li{margin-bottom:.5em}
.prose{font-family:var(--serif);font-size:1.12rem;line-height:1.75}
.prose li,.prose p,.prose summary{max-width:70ch}
.callout{background:var(--mist);border-left:5px solid var(--citrus);padding:16px 20px;border-radius:0 var(--r) var(--r) 0;margin:2em 0;font-family:var(--sans);font-size:1rem}
details{border-bottom:1px solid var(--line);padding:12px 0}
summary{cursor:pointer;font-weight:700;font-family:var(--sans)}
details p{margin:.6em 0 0}
.disclaimer{font:.85rem/1.5 var(--sans);color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:2em}
.related{margin-top:48px;max-width:1120px}
.filters{display:grid;gap:14px;margin:20px 0 8px;max-width:640px}
/* Footer */
.site-footer{background:var(--mist);border-top:1px solid var(--line);padding:44px 0 20px;font-size:.95rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.fgrid ul{list-style:none;margin:0;padding:0}
.fgrid li{margin-bottom:6px}
.legal{margin-top:28px;color:var(--muted);font-size:.85rem}
@media (max-width:860px){.hgrid,.split,.fgrid{grid-template-columns:1fr}.hero{padding:36px 0}.bar{flex-direction:column;align-items:flex-start}}