:root{--paper:#f3efe4;--paper-2:#fbf7ef;--ink:#1c1612;--ink-soft:#433c36;--moss:#1f4336;--moss-deep:#163328;--clay:#8a3b2e;--line:#ddcfbb;--card:#fffaf3;--warn:#f4e4c3;--font-serif:"Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;--font-sans:"Segoe UI", system-ui, -apple-system, sans-serif;--wrap:72rem;--measure:40rem;color-scheme:light}*,:before,:after{box-sizing:border-box}html{scroll-padding-top:1rem}body{background:var(--paper);color:var(--ink);font-family:var(--font-sans);margin:0;font-size:1.0625rem;line-height:1.55}img,picture,svg{max-width:100%}img{height:auto}h1,h2,h3,.wordmark{font-family:var(--font-serif);letter-spacing:-.02em;font-weight:600;line-height:1.15}h1{margin:0 0 .6rem;font-size:clamp(2.1rem,4vw,3.5rem)}h2{margin:2rem 0 .6rem;font-size:clamp(1.45rem,2vw,1.9rem)}h3{margin:1.4rem 0 .4rem;font-size:1.25rem}p{margin:.7rem 0}a{color:var(--moss);text-underline-offset:.16em}a:hover{color:var(--ink)}:focus{outline:none}:focus-visible{outline:3px solid var(--moss);outline-offset:3px}.skip-link{z-index:5;background:var(--ink);color:var(--paper-2);padding:.55rem .8rem;position:absolute;top:.75rem;left:.75rem;transform:translateY(-150%)}.skip-link:focus{transform:none}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.wrap{width:min(var(--wrap), calc(100% - 2rem));margin-inline:auto}.site-header{border-bottom:1px solid var(--line);background:var(--paper-2)}.header-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 1.5rem;padding:.85rem 0;display:flex}.wordmark{color:var(--ink);align-items:center;gap:.6rem;font-size:1.45rem;text-decoration:none;display:inline-flex}.wordmark svg{flex:none;width:2rem;height:2rem}.nav{position:relative}.nav__toggle{cursor:pointer;border:1px solid var(--line);background:var(--card);font:inherit;padding:.4rem .7rem;list-style:none}.nav__toggle::-webkit-details-marker{display:none}.nav__list{gap:.45rem;margin:.6rem 0 0;padding:0;list-style:none;display:grid}.nav__list a{color:var(--ink)}@media (width>=960px){.nav__toggle{display:none}.nav details:not([open])>.nav__list,.nav details[open]>.nav__list{flex-wrap:wrap;align-items:center;gap:.35rem .9rem;margin:0;display:flex}}.site-footer{background:var(--moss-deep);color:var(--paper);margin-top:4rem}.site-footer a{color:var(--paper)}.site-footer :focus-visible{outline-color:var(--paper)}.footer-grid{gap:1.5rem;padding:2rem 0;display:grid}@media (width>=800px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}.site-footer h2{font-family:var(--font-sans);letter-spacing:.08em;text-transform:uppercase;margin:0 0 .6rem;font-size:.78rem}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin:.3rem 0}.footer-note{border-top:1px solid #f3efe440;padding:.8rem 0 1.2rem;font-size:.92rem}.crumbs{margin:1rem 0;font-size:.92rem}.crumbs ol{flex-wrap:wrap;gap:.3rem .35rem;margin:0;padding:0;list-style:none;display:flex}.crumbs [aria-hidden]{color:var(--ink-soft)}.hero{padding:2.5rem 0 1rem}.kicker{letter-spacing:.08em;text-transform:uppercase;color:var(--moss);margin:0 0 .6rem;font-size:.78rem}.lede,.symptom-line{max-width:42rem;font-size:1.15rem}.card-grid,.tool-grid{grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1rem;display:grid}.card,.sheet,.quick-answer,.stub-banner,.finder,.batch-sheet{background:var(--card);border:1px solid var(--line)}.card{border-top:4px solid var(--moss);padding:1rem 1rem .8rem}.card h3{margin-top:0}.card ol,.problem-list{margin:.4rem 0 0;padding-left:1.1rem}.problem-list{gap:.75rem;padding:0;list-style:none;display:grid}@media (width>=800px){.problem-list{grid-template-columns:1fr 1fr}}.problem-list li{border-top:1px solid var(--line);padding-top:.75rem}.meta-line,.byline,.card p{color:var(--ink-soft)}.badge{letter-spacing:.04em;text-transform:uppercase;border:1px solid;margin-right:.35rem;padding:.12rem .45rem;font-size:.75rem;display:inline-block}.badge--research{color:var(--clay)}.badge--outline{color:var(--ink-soft)}.prose{max-width:var(--measure)}.prose.wide{max-width:48rem}.prose h1,.prose h2,.prose h3{font-family:var(--font-serif)}.article-copy{font-family:var(--font-serif);font-size:1.125rem;line-height:1.6}.quick-answer{border-left:4px solid var(--moss);margin:1rem 0;padding:.9rem 1rem}.quick-answer h2{letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;font-family:var(--font-sans);margin:0 0 .35rem}.stub-banner{background:var(--warn);margin:1rem 0;padding:.85rem 1rem}.figure{margin:1rem 0}.figure figcaption{color:var(--ink-soft);margin-top:.35rem;font-size:.92rem}.table-wrap{margin:1rem 0;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.95rem;font-family:var(--font-sans)}caption{text-align:left;margin-bottom:.4rem;font-weight:600}th,td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:.55rem .6rem}th{background:#f6f0e4}.toc{border:1px solid var(--line);background:var(--card);margin:1rem 0;padding:.6rem .9rem}.toc summary{cursor:pointer;font-weight:600}.toc ol{margin:.5rem 0 0}.toc .depth-3{margin-left:1rem}.related-list{padding:0;list-style:none}.related-list li{margin:.7rem 0}.finder{margin:1rem 0;padding:1rem}.finder-steps{gap:.8rem;display:grid}.choice-row{flex-wrap:wrap;gap:.45rem;display:flex}.choice-row button,.button,button{font:inherit;color:var(--ink);background:var(--paper-2);border:1px solid var(--ink);cursor:pointer;padding:.4rem .7rem}.choice-row button[aria-pressed=true]{background:var(--moss);color:var(--paper)}.result-card{border-top:1px solid var(--line);padding:.7rem 0}.batch-sheet{padding:1rem}.batch-grid{gap:.8rem;display:grid}label{gap:.25rem;font-weight:600;display:grid}input,textarea{font:inherit;color:var(--ink);border:1px solid var(--ink);background:#fff;width:100%;padding:.45rem .55rem}textarea{min-height:8rem}.actions{flex-wrap:wrap;gap:.6rem;margin:1rem 0;display:flex}.consent-banner{z-index:4;background:var(--ink);color:var(--paper);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.7rem 1rem;padding:.8rem 1rem;display:flex;position:fixed;bottom:0;left:0;right:0}.consent-banner a{color:var(--paper)}.consent-banner :focus-visible{outline-color:var(--paper)}html[data-consent] .consent-banner{display:none}html:not([data-consent]) body{padding-bottom:8rem}html:not([data-consent]){scroll-padding-bottom:8rem}.ad-slot{border:1px dashed var(--line);color:var(--ink-soft);background:repeating-linear-gradient(-45deg,#f6f1e6,#f6f1e6 8px,#efe6d6 8px 16px);justify-content:center;align-items:center;margin:1.25rem 0;display:flex}.ad-slot__label{letter-spacing:.06em;text-transform:uppercase;font-size:.75rem}.ad-slot--sidebar{display:none}@media (width>=1200px){.ad-slot--sidebar{display:flex}html[data-ads=true] .article-frame{grid-template-columns:minmax(0, var(--measure)) 300px;justify-content:center;align-items:start;gap:2rem;display:grid}.ad-slot--sidebar{position:sticky;top:1rem}}.ad-slot--anchor{display:none}@media (width<=719px){.ad-slot--anchor{z-index:3;margin:0;display:flex;position:sticky;bottom:0}}.glossary dt{font-family:var(--font-serif);margin-top:1.2rem;font-size:1.35rem}.glossary dt:target{background:var(--card)}.letter{border-bottom:1px solid var(--line);margin-top:2rem}.trust-strip{border-top:1px solid var(--line);flex-wrap:wrap;gap:.5rem 1.2rem;margin-top:2rem;padding-top:1rem;display:flex}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media print{.site-header,.site-footer,.consent-banner,.crumbs,.no-print,.ad-slot,.skip-link{display:none!important}body{color:#000;background:#fff;padding:0}a{color:#000}.batch-sheet{border:none}@page{margin:12mm}}