@font-face{font-family:Oswald;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/oswald-500.woff2)format("woff2")}@font-face{font-family:Oswald;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/oswald-600.woff2)format("woff2")}@font-face{font-family:Oswald;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/oswald-700.woff2)format("woff2")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/plex-sans-400.woff2)format("woff2")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/plex-sans-500.woff2)format("woff2")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/plex-sans-600.woff2)format("woff2")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/plex-mono-400.woff2)format("woff2")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/plex-mono-500.woff2)format("woff2")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/plex-mono-600.woff2)format("woff2")}
:root{--paper:#f2eee3;--paper-raised:#faf7ef;--graphite:#262421;--muted:#6e6a61;--carbon:#2b4573;--stamp:#c0392b;--hairline:#ddd4c2;--carbon-90:#3a5384;--carbon-70:#5e7398;--carbon-50:#8b9bb6;--carbon-30:#b7c0d2;--carbon-15:#d8dce5;--carbon-tint:#ededf0;--stamp-soft:#d46a5e;--stamp-wash:#f0dbd7;--bg-page:var(--paper);--bg-surface:var(--paper-raised);--bg-inset:#ede8db;--text-primary:var(--graphite);--text-secondary:var(--muted);--text-onDark:var(--paper-raised);--border-rule:var(--hairline);--border-strong:var(--graphite);--brand-ink:var(--carbon);--accent-mark:var(--stamp);--focus-ring:var(--carbon)}
:root{--font-display:"Oswald", "Arial Narrow", system-ui, sans-serif;--font-body:"IBM Plex Sans", system-ui, -apple-system, sans-serif;--font-mono:"IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;--w-body:400;--w-body-med:500;--w-body-strong:600;--w-display:600;--w-display-hvy:700;--t-caption:.75rem;--t-label:.8125rem;--t-small:.875rem;--t-body:1rem;--t-lede:1.1875rem;--t-h4:1.375rem;--t-h3:1.75rem;--t-h2:2.375rem;--t-h1:3.25rem;--t-pick:5rem;--lh-tight:1.02;--lh-snug:1.2;--lh-body:1.65;--lh-num:1;--measure:68ch;--num-feat:"tnum" 1, "zero" 1, "cv01" 0}.num,[data-num]{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1, "zero" 1;letter-spacing:-.01em}
:root{--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:20px;--sp-6:24px;--sp-8:32px;--sp-10:40px;--sp-12:48px;--sp-16:64px;--sp-20:80px;--page-max:720px;--tool-max:460px;--gutter:20px;--r-0:0px;--r-1:2px;--r-2:4px;--r-round:999px;--bd-hair:1px solid var(--hairline);--bd-rule:1.5px solid var(--graphite);--bd-ink:2px solid var(--carbon);--shadow-none:none;--lift-flat:2px 2px 0 #26242114;--tap-min:44px;--focus-w:2px;--ease-print:cubic-bezier(.2, .7, .3, 1);--ease-stamp:cubic-bezier(.18, 1.35, .4, 1);--dur-fast:.12s;--dur-base:.2s;--dur-stamp:.26s}
*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg-page);color:var(--text-primary);font-family:var(--font-body);font-size:var(--t-body);font-weight:var(--w-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0}h1,h2,h3,h4{font-family:var(--font-display);font-weight:var(--w-display);line-height:var(--lh-snug);letter-spacing:.005em;color:var(--text-primary);margin:0 0 var(--sp-4);text-wrap:balance}h1{font-size:var(--t-h1);line-height:var(--lh-tight)}h2{font-size:var(--t-h2)}h3{font-size:var(--t-h3)}h4{font-size:var(--t-h4)}p{margin:0 0 var(--sp-4);text-wrap:pretty}.prose,.prose p{max-width:var(--measure)}a{color:var(--carbon);border-bottom:1px solid var(--carbon-30);transition:border-color var(--dur-fast) var(--ease-print);text-decoration:none}a:hover{border-bottom-color:var(--carbon)}small,.caption{font-size:var(--t-caption);color:var(--text-secondary)}hr{border:0;border-top:var(--bd-hair);margin:var(--sp-8) 0}:focus-visible{outline:var(--focus-w) solid var(--focus-ring);outline-offset:2px}::selection{background:var(--carbon-15);color:var(--graphite)}.num,[data-num]{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.coupon-rule{border:0;border-top:1.5px solid var(--graphite);height:0;position:relative}.coupon-rule:after{content:"";border-top:1px solid var(--hairline);position:absolute;top:3px;left:0;right:0}@media (prefers-reduced-motion:reduce){*{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}
.site-nav{z-index:20;background:var(--carbon);color:var(--paper-raised);position:sticky;top:0}.site-nav-in{justify-content:space-between;align-items:center;max-width:900px;margin:0 auto;padding:12px 20px;display:flex}.site-nav a{color:var(--paper-raised);opacity:.85;border:none;font-size:14px;font-weight:500}.site-nav a:hover{opacity:1}.site-nav a[aria-current=page]{opacity:1;border-bottom:1.5px solid var(--paper-raised)}.doc{max-width:680px;margin:0 auto;padding:48px 20px 80px}.doc p,.doc li{color:var(--graphite);max-width:68ch;font-size:17px;line-height:1.65}.doc h1{margin:12px 0 0;font-size:clamp(34px,6vw,52px);font-weight:600;line-height:1.04}.doc h2{margin:44px 0 12px;font-size:30px;font-weight:600}.doc h3{margin:30px 0 8px;font-size:21px;font-weight:600}.doc .lbl{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:600}.doc .lede{margin-top:18px;font-size:20px;line-height:1.6}.doc .callout{border-left:3px solid var(--carbon);background:var(--paper-raised);margin:22px 0;padding:14px 18px}.doc .callout p{margin:0;font-size:16px}.doc .formula{font-family:var(--font-mono);font-variant-numeric:tabular-nums;background:var(--paper-raised);border:1px solid var(--hairline);max-width:520px;padding:12px 14px;font-size:15px;overflow-x:auto}.doc table{border-collapse:collapse;width:100%;max-width:520px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;margin:18px 0;font-size:15px}.doc th{text-align:right;color:var(--muted);letter-spacing:.04em;text-transform:uppercase;border-bottom:1.5px solid var(--graphite);padding:6px 10px;font-size:12px;font-weight:600}.doc th:first-child{text-align:left}.doc td{text-align:right;border-bottom:1px solid var(--hairline);padding:7px 10px}.doc td:first-child{text-align:left}.doc tr.mark td{color:var(--stamp);font-weight:600}.doc .cta{background:var(--carbon);min-height:48px;color:var(--paper-raised);border-radius:var(--r-1);border:none;align-items:center;padding:13px 22px;font-size:16px;font-weight:600;display:inline-flex}.site-footer{border-top:1.5px solid var(--graphite);margin-top:var(--sp-16)}.site-footer-in{max-width:var(--page-max);padding:var(--sp-6) var(--gutter) var(--sp-10);gap:var(--sp-3) var(--sp-6);font-size:var(--t-small);color:var(--text-secondary);flex-wrap:wrap;align-items:baseline;margin:0 auto;display:flex}.site-footer-tagline{flex-basis:100%;order:2}.site-footer a{color:var(--text-secondary);border-bottom-color:var(--hairline)}.site-footer a:hover{color:var(--carbon)}