*,*::before,*::after{box-sizing:border-box}
html{font-size:100%;-webkit-text-size-adjust:100%;overflow-x:hidden;scroll-behavior:smooth}
body{margin:0;background:#f6f3ee;color:#1c1917;font:1.0625rem/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}
img,svg,video{max-width:100%;height:auto;display:block}
table{width:100%;border-collapse:collapse}
button,input,select,textarea{font:inherit;max-width:100%}
a{color:#1d4a45}
a:hover{color:#0f2f2c}
.skip{position:absolute;left:-999px;top:0;background:#1c1917;color:#fff;padding:.5rem .75rem}
.skip:focus{left:.5rem;z-index:10}
.wrap{width:min(44rem,calc(100% - 2rem));margin-inline:auto}
.site-header{border-bottom:1px solid #e7e0d6;background:#fffdf9;position:sticky;top:0;z-index:5}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;min-height:3.25rem;width:min(72rem,calc(100% - 2rem))}
.logo{font-weight:700;text-decoration:none;color:#1c1917;letter-spacing:-.02em}
.nav-btn{display:none;cursor:pointer;border:1px solid #e7e0d6;background:#fff;padding:.35rem .7rem;border-radius:4px}
nav[aria-label=Primary]{display:flex;gap:.85rem;flex-wrap:wrap}
nav[aria-label=Primary] a{text-decoration:none;color:#44403c;font-size:.95rem}
nav[aria-label=Primary] a:hover{color:#1d4a45}
.crumbs{font-size:.85rem;color:#57534e;margin:1rem 0 0;display:flex;flex-wrap:wrap;gap:.35rem}
.crumbs a{color:#57534e}
h1{font-size:clamp(1.7rem,4vw,2.15rem);line-height:1.2;margin:1rem 0 .75rem;letter-spacing:-.03em}
h2{font-size:1.25rem;line-height:1.3;margin:2rem 0 .6rem}
h3{font-size:1.05rem;margin:1.4rem 0 .4rem}
p,li{color:#292524}
ul,ol{padding-left:1.2rem}
.lede{font-size:1.12rem;color:#44403c}
.qa,.note,.cta,.callout,.author-box,.best-avoid{background:#fffdf9;border:1px solid #e7e0d6;padding:1rem;margin:1.25rem 0;border-radius:6px}
.qa{border-left:3px solid #1d4a45}
.note{font-size:.95rem;background:#faf6ef}
.cta{background:#1d4a45;color:#fffdf9;border-color:#1d4a45}
.cta h2,.cta p{color:#fffdf9}
.btn{display:inline-block;background:#fffdf9;color:#1d4a45;text-decoration:none;padding:.55rem .9rem;border-radius:4px;font-weight:600;margin:.25rem .4rem .25rem 0}
.btn:hover{color:#0f2f2c}
.cta .btn{background:#fff;color:#1d4a45}
.cta .btn:hover{color:#0f2f2c;background:#f3f1ec}
.btn-alt{background:transparent;color:#fffdf9;border:1px solid #fffdf9}
.cta .btn-alt{background:transparent;color:#fffdf9;border:1px solid #fffdf9}
.cta .btn-alt:hover{color:#fff;background:#163a36}
.callout{border-left:3px solid #8a3b12}
.table-wrap{overflow-x:auto;margin:1rem 0;-webkit-overflow-scrolling:touch}
th,td{border:1px solid #e7e0d6;padding:.5rem .6rem;text-align:left;vertical-align:top;font-size:.95rem}
th{background:#efeae2}
.best-avoid{display:grid;grid-template-columns:1fr;gap:1rem}
@media (min-width:40rem){.best-avoid{grid-template-columns:1fr 1fr}}
.best-avoid h2{margin-top:0}
.kicker{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:#57534e;margin:1rem 0 0}
.sources{font-size:.92rem}
.sources li{margin:.35rem 0}
.related ul{padding-left:1.2rem}
form label{display:block;margin:.75rem 0 .25rem;font-weight:600}
form input[type=email],form input[type=text],form textarea{width:100%;padding:.55rem .65rem;border:1px solid #d6d3d1;border-radius:4px;background:#fff}
form button,.submit{background:#1d4a45;color:#fff;border:0;padding:.6rem 1rem;border-radius:4px;cursor:pointer;font-weight:600}
.hp{position:absolute;left:-9999px}
.site-footer{border-top:1px solid #e7e0d6;margin-top:3rem;padding:1.5rem 0;background:#fffdf9;font-size:.92rem}
.footer-inner{width:min(72rem,calc(100% - 2rem))}
.footer-inner nav{display:flex;flex-wrap:wrap;gap:.75rem;margin:.75rem 0}
.footer-inner a{color:#44403c}
.fine,.footer-brand{color:#57534e}
.diagram{margin:1rem 0;background:#fffdf9;border:1px solid #e7e0d6;padding:.75rem;border-radius:6px}
.diagram img,.diagram object,.diagram svg{width:100%;height:auto;display:block}
.diagram figcaption{font-size:.85rem;color:#57534e;margin-top:.5rem}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}
.pair p{margin:.4rem 0 0;font-size:.85rem;color:#44403c}
@media (max-width:40rem){.pair{grid-template-columns:1fr}}
.cite{font-size:.92rem}
.ok{color:#1d4a45;font-weight:600}
.warn{color:#8a3b12;font-weight:600}
@media (max-width:52rem){
  .nav-btn{display:inline-block}
  nav[aria-label=Primary]{display:none;width:100%;flex-direction:column;padding:0 0 .75rem}
  #nav-toggle:checked ~ nav[aria-label=Primary]{display:flex}
}
@media print{
  .site-header,.site-footer,.cta,.nav-btn,.skip{display:none}
  body{background:#fff;color:#000}
  .wrap{width:auto}
  a{color:inherit;text-decoration:none}
}