:root{--ink:#181818;--ink-soft:#4a4a4a;--paper:#fbf9f6;--paper-2:#f3efe9;--accent:#2f7d5a;--accent-strong:#2b7353;--line:#e6e0d8;--maxw:720px;--measure:38rem;--serif:"Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;--sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--ink);font-family:var(--sans);margin:0;font-size:18px;line-height:1.65}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}main{min-height:60vh}a{color:var(--accent);text-underline-offset:2px;text-decoration:underline 1px;transition:color .14s,text-decoration-thickness .14s}a:hover{color:var(--accent-strong);text-decoration-thickness:2px}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:1px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.site-header{border-bottom:1px solid var(--line);background:var(--paper)}.site-header .wrap{justify-content:space-between;align-items:center;gap:16px;padding-top:10px;padding-bottom:10px;display:flex}.logo{font-family:var(--serif);color:var(--ink);letter-spacing:-.02em;padding:6px 0;font-size:24px;font-weight:700;text-decoration:none}.logo span{color:var(--accent)}.site-header nav{align-items:center;display:flex}.site-header nav>a{color:var(--ink-soft);margin-left:8px;padding:12px 8px;font-size:16px;text-decoration:none;transition:color .14s;display:inline-block}.site-header nav>a:hover{color:var(--accent)}@media (width<=540px){.site-header .wrap{flex-wrap:wrap}.site-header nav{flex-basis:100%;justify-content:space-between;margin-top:6px}.site-header nav>a{margin-left:0}.site-header nav>a:first-child{padding-left:0}.site-header nav>a:last-child{padding-right:0}}.lang-switch{color:var(--ink-soft);margin:14px 0 18px;font-size:13px}.lang-switch summary{cursor:pointer;padding:4px 0}.lang-switch summary:hover{color:var(--accent)}.lang-switch .ls-globe,.lang-switch .ls-flag{font-size:13px}.lang-switch .ls-list{margin:10px 0 0;padding:0;list-style:none}.lang-switch .ls-list li{flex-wrap:wrap;gap:4px 14px;margin:5px 0;display:flex}.lang-switch .ls-region{min-width:7.5em}.lang-switch .ls-langs{flex-wrap:wrap;align-items:center;gap:7px;display:inline-flex}.lang-switch a{color:var(--ink-soft);text-decoration:none}.lang-switch a:hover{color:var(--accent)}.lang-switch .on{color:var(--ink);font-weight:700}.lang-switch .ls-sep{color:var(--line)}h1,h2,h3{font-family:var(--serif);letter-spacing:-.015em;text-wrap:balance;line-height:1.18}h1{margin:0 0 .4em;font-size:clamp(2rem,1.55rem + 1.9vw,2.75rem)}h2{margin:1.9em 0 .5em;font-size:clamp(1.4rem,1.2rem + .85vw,1.75rem);line-height:1.24}h3{margin:1.6em 0 .4em;font-size:clamp(1.15rem,1.05rem + .4vw,1.3rem);line-height:1.3}.hero{border-bottom:1px solid var(--line);padding:clamp(48px,4vw + 32px,88px) 0 clamp(30px,2vw + 18px,44px)}.hero .tagline{font-family:var(--serif);letter-spacing:-.02em;text-wrap:balance;margin:0 0 18px;font-size:clamp(2.3rem,1.5rem + 3.2vw,3.25rem);line-height:1.08}.hero p{color:var(--ink-soft);text-wrap:pretty;max-width:34rem;margin:0;font-size:clamp(1.1rem,1rem + .4vw,1.2rem)}.kicker{font-family:var(--sans);letter-spacing:.01em;color:var(--ink-soft);margin:0 0 10px;font-size:.82rem;font-weight:700}.region-list{margin:28px 0 0;padding:0;list-style:none}.region-list li{border-bottom:1px solid var(--line);padding:18px 0}.region-list>li>a{font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;font-size:1.5rem;text-decoration:none}.region-list>li>a:hover{color:var(--accent)}.region-list .langs{color:var(--ink-soft);margin-top:4px;font-size:.95rem}.article-list{margin:28px 0;padding:0;list-style:none}.article-list li{border-bottom:1px solid var(--line);padding:22px 0}.article-list a.title{font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;background-image:linear-gradient(var(--accent), var(--accent));background-position:0 100%;background-repeat:no-repeat;background-size:0% 1.5px;width:fit-content;max-width:100%;margin-bottom:6px;font-size:clamp(1.3rem,1.15rem + .6vw,1.5rem);line-height:1.25;text-decoration:none;transition:background-size .26s cubic-bezier(.2,.7,.2,1),color .15s;display:block}.article-list a.title:hover,.article-list a.title:focus-visible{color:var(--accent);background-size:100% 1.5px}.article-list .meta{color:var(--ink-soft);font-size:.85rem}.article-list p{color:var(--ink-soft);max-width:var(--measure);margin:8px 0 0;font-size:1rem}.cluster{margin:clamp(36px,4vw,52px) 0}.section-title{font-family:var(--serif);letter-spacing:0;color:var(--ink);border-bottom:1px solid var(--line);margin:0;padding-bottom:10px;font-size:1.05rem;font-weight:700}.cluster .article-list{margin-top:0}.article{padding:48px 0 24px}.article .meta{color:var(--ink-soft);margin-bottom:28px;font-size:.88rem}.article-body{font-size:1.08rem;line-height:1.72}.article-body p,.article-body ul,.article-body ol{max-width:var(--measure);margin:1.05em 0}.article-body li{margin:.4em 0}.article-body p{text-wrap:pretty}.article-body strong{color:var(--ink)}.article-body blockquote{border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-family:var(--serif);color:var(--ink);max-width:var(--measure);margin:1.8em 0;padding:18px 0;font-size:1.2rem;line-height:1.45}.article-body blockquote p{max-width:none;margin:0}.article-body table{border-collapse:collapse;width:100%;margin:1.5em 0;font-size:.95rem}.article-body th,.article-body td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:10px 12px}.article-body th{background:var(--paper-2);font-family:var(--sans)}.article-body code{background:var(--paper-2);overflow-wrap:anywhere;border-radius:4px;padding:.12em .34em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em}.article-body pre{overflow-x:auto}.article-body pre code{background:0 0;padding:0}.article-body .lede{color:var(--ink);max-width:var(--measure);text-wrap:pretty;margin:0 0 1.2em;font-size:clamp(1.16rem,1.05rem + .5vw,1.32rem);line-height:1.5}.evidence-scale{max-width:var(--measure);margin:1.6em 0}.evidence-scale .tier{border-top:1px solid var(--line);grid-template-columns:auto 1fr;align-items:baseline;gap:3px 14px;padding:16px 0;display:grid}.evidence-scale .tier:last-child{border-bottom:1px solid var(--line)}.evidence-scale .dots{grid-area:1/1;gap:4px;display:inline-flex}.evidence-scale .dot{border:1.5px solid var(--ink);border-radius:50%;width:8px;height:8px}.evidence-scale .dot.on{background:var(--ink)}.evidence-scale dt{font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;grid-area:1/2;font-size:1.15rem;font-weight:700}.evidence-scale dd{color:var(--ink-soft);grid-area:2/2;margin:0;font-size:1rem;line-height:1.55}.report-figures{border-collapse:collapse;width:100%;margin:26px 0 36px}.report-figures caption{text-align:left;font-family:var(--serif);color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:10px;font-size:1.05rem;font-weight:700}.report-figures th[scope=row]{text-align:left;font-family:var(--sans);color:var(--ink);border-bottom:1px solid var(--line);vertical-align:baseline;padding:15px 18px 15px 0;font-size:1rem;font-weight:400;line-height:1.4}.report-figures td{text-align:right;white-space:nowrap;border-bottom:1px solid var(--line);vertical-align:baseline;font-variant-numeric:tabular-nums;padding:15px 0}.report-figures .val{font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;font-size:clamp(1.35rem,1.2rem + .6vw,1.6rem);font-weight:700}.report-figures .unit{color:var(--ink-soft);margin-left:4px;font-size:.9rem}.faq{border-top:1px solid var(--line);margin:40px 0;padding:28px 0}.faq h2{margin-top:0}.faq details{border-bottom:1px solid var(--line);padding:14px 0}.faq summary{cursor:pointer;padding:2px 0;font-size:1.05rem;font-weight:600;transition:color .14s}.faq summary:hover{color:var(--accent)}.faq details p{color:var(--ink-soft);max-width:var(--measure);margin:10px 0 0}.related{border-top:1px solid var(--line);margin:40px 0;padding:28px 0}.related h2{margin-top:0}.related ul{margin:0;padding:0;list-style:none}.related li{border-bottom:1px solid var(--line);padding:10px 0}.related li:last-child{border-bottom:0}.related a{font-family:var(--serif);color:var(--ink);background-image:linear-gradient(var(--accent), var(--accent));background-position:0 100%;background-repeat:no-repeat;background-size:0% 1.5px;font-size:1.15rem;text-decoration:none;transition:background-size .26s cubic-bezier(.2,.7,.2,1),color .15s}.related a:hover,.related a:focus-visible{color:var(--accent);background-size:100% 1.5px}.site-footer{border-top:1px solid var(--line);background:var(--paper-2);margin-top:64px;padding:32px 0}.site-footer .disclosure{color:var(--ink-soft);margin:0 0 12px;font-size:.92rem}.site-footer .fineprint{color:var(--ink-soft);margin:0;font-size:.8rem}.footer-nav{flex-wrap:wrap;gap:2px 18px;margin:0 0 8px;display:flex}.footer-nav a{color:var(--ink-soft);padding:8px 0;font-size:.85rem;text-decoration:none;transition:color .14s;display:inline-block}.footer-nav a:hover{color:var(--accent)}@media (width<=640px){body{font-size:17px}}.quick-answer{background:var(--paper-2);border:1px solid var(--line);border-radius:6px;margin:0 0 30px;padding:16px 20px}.quick-answer .qa-label{font-family:var(--sans);letter-spacing:.02em;color:var(--accent-strong);margin:0 0 6px;font-size:.78rem;font-weight:700}.quick-answer p:last-child{color:var(--ink);margin:0;font-size:1.04rem;line-height:1.55}.newsletter{border-top:1px solid var(--line);margin:48px 0 0;padding:32px 0 8px}.newsletter .nl-heading{margin:0 0 6px;font-size:1.35rem}.newsletter .nl-sub{color:var(--ink-soft);margin:0 0 16px;font-size:1rem}.newsletter .nl-form{flex-wrap:wrap;gap:10px;display:flex}.newsletter .nl-input{font-size:1rem;font-family:var(--sans);border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:6px;flex:220px;padding:11px 14px}.newsletter .nl-input:focus-visible{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}.newsletter .nl-button{font-size:1rem;font-weight:600;font-family:var(--sans);color:var(--paper);background:var(--accent);cursor:pointer;border:0;border-radius:6px;padding:11px 22px;transition:background-color .14s}.newsletter .nl-button:hover{background:var(--accent-strong)}.newsletter .nl-privacy{color:var(--ink-soft);margin:10px 0 0;font-size:.8rem}.newsletter .nl-privacy a{color:var(--ink-soft)}