:root{--ink:#17221d;--muted:#5c6a63;--paper:#f7f4ec;--card:#fffdf8;--green:#145c43;--lime:#cde75b;--line:#d8ddd5;--orange:#d66a2c;--shadow:0 18px 50px rgba(23,34,29,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.65}a{color:var(--green);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible{outline:3px solid var(--orange);outline-offset:3px}.skip-link{position:absolute;left:-999px;top:0}.skip-link:focus{left:1rem;top:1rem;background:#fff;padding:.75rem;z-index:10}.content-header{background:#102c23;color:#fff}.nav-wrap,.content-shell,.content-footer-inner{width:min(1100px,calc(100% - 2rem));margin:auto}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:1.5rem}.content-brand{color:#fff;text-decoration:none;font-weight:800;letter-spacing:-.02em}.content-nav{display:flex;gap:1rem;flex-wrap:wrap}.content-nav a{color:#e9f0eb;text-decoration:none}.content-nav a:hover{text-decoration:underline}.hero{padding:5rem 0 3.5rem;background:linear-gradient(135deg,#102c23,#1c654c);color:#fff}.hero .content-shell{max-width:900px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font:700 .78rem ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--lime)}h1,h2,h3{line-height:1.18;letter-spacing:-.025em}h1{font-size:clamp(2.35rem,6vw,4.8rem);margin:.35rem 0 1rem}h2{font-size:clamp(1.6rem,3vw,2.35rem);margin:2.7rem 0 .8rem}h3{font-size:1.22rem}.lede{font-size:clamp(1.08rem,2vw,1.35rem);max-width:760px;color:#e3eee8}.content-main{padding:3rem 0 5rem}.content-main>.content-shell{max-width:900px}.answer-box,.note,.warning,.scenario-card,.source-card,.directory-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:1.4rem;box-shadow:var(--shadow)}.answer-box{border-left:6px solid var(--lime);font-size:1.12rem}.note{border-left:5px solid var(--green);box-shadow:none}.warning{border-left:5px solid var(--orange);box-shadow:none}.formula{overflow:auto;background:#102c23;color:#f3f7f4;border-radius:12px;padding:1rem;font:600 .93rem ui-monospace,SFMono-Regular,Consolas,monospace}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:#fff}table{width:100%;border-collapse:collapse;min-width:620px}th,td{padding:.9rem;text-align:left;border-bottom:1px solid var(--line)}th{background:#eef2e9;font-size:.88rem}tr:last-child td{border-bottom:0}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.directory-card,.source-card{box-shadow:none}.directory-card h2,.source-card h3{margin-top:0}.button-link{display:inline-block;background:var(--lime);color:#102c23;text-decoration:none;font-weight:800;border-radius:999px;padding:.75rem 1.1rem}.button-link:hover{filter:brightness(.96)}.breadcrumbs{font-size:.9rem;margin-bottom:2rem;color:var(--muted)}.breadcrumbs a{color:inherit}.reviewed{margin-top:3rem;color:var(--muted);font-size:.9rem}.content-footer{background:#102c23;color:#dbe6e0;padding:2rem 0}.content-footer-inner{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}.content-footer a{color:#fff}.plain-list li{margin:.5rem 0}.source-list li{margin:1rem 0}.muted{color:var(--muted)}
/* Accessible navigation targets and motion preferences. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.content-nav{gap:.25rem 1rem}.content-nav a{display:inline-flex;min-height:44px;align-items:center}
a:focus-visible,button:focus-visible{outline:3px solid #000;outline-offset:3px;box-shadow:0 0 0 6px #fff}
@media(max-width:700px){.nav-wrap{align-items:flex-start;flex-direction:column;padding:1rem 0}.content-nav{gap:.25rem 1rem}.hero{padding:3.4rem 0 2.6rem}.content-main{padding-top:2rem}.card-grid{grid-template-columns:1fr}h1{font-size:2.45rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
@media print{.content-header,.content-footer,.button-link{display:none}.hero{background:#fff;color:#000;padding:1rem 0}.hero .lede{color:#222}.eyebrow{color:#222}.content-main{padding:0}.answer-box,.note,.warning,.scenario-card,.source-card,.directory-card{box-shadow:none;break-inside:avoid}.table-wrap{overflow:visible;border:0}table{min-width:0;font-size:.75rem;table-layout:fixed}th,td{padding:.4rem;overflow-wrap:anywhere}a{color:#000;text-decoration:none}a[href^="http"]::after{content:" (" attr(href) ")";font-size:.8em;overflow-wrap:anywhere}}