.r-gold-oa{display:inline-flex;align-items:center;gap:5px}.ap-primary summary:after{content:'+'!important}.ap-primary details[open] summary:after{content:'−'!important}.pp-page{padding:45px 0 80px}.pp-hero{padding-bottom:32px;border-bottom:1px solid #dce4e9;margin-bottom:38px}.pp-hero h1{font:clamp(34px,4vw,52px)/1.15 Georgia,serif;margin:18px 0;color:#172f43}.pp-intro{font:18px/1.8 Arial;max-width:760px;color:#526575}.pp-eyebrow{font:700 11px Arial;letter-spacing:1.8px;text-transform:uppercase;color:#957025}.pp-layout{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:65px}.pp-section{scroll-margin-top:24px;border-bottom:1px solid #dce4e9;padding-bottom:35px;margin-bottom:35px}.pp-section h2{font:29px/1.3 Georgia;margin-bottom:23px}.pp-section p,.pp-section li{font:15px/1.85 Arial;color:#526575;max-width:76ch}.pp-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.pp-cards article{padding:24px;background:#f5f7f9;border:1px solid #dce4e9;min-width:0}.pp-cards h3{font:23px/1.3 Georgia;margin:17px 0 13px}.pp-icon{display:inline-block;width:22px;height:22px;flex:0 0 22px;vertical-align:middle}.pp-oa{display:inline-block!important;width:14px!important;height:23px!important;object-fit:contain;flex:0 0 14px}.pp-button{display:inline-flex;align-items:center;gap:9px;padding:11px 15px;border:1px solid #bbc9d4;font:600 13px/1.5 Arial;color:#193a50;background:white;margin:6px 8px 5px 0;text-decoration:none;max-width:100%}.pp-button:hover{background:#eaf0f5}.pp-side{align-self:start;position:sticky;top:24px;border-top:3px solid #af8530;padding-top:20px;max-height:calc(100vh - 48px);overflow:auto}.pp-side nav{display:grid}.pp-side nav a{padding:12px 8px;border-bottom:1px solid #dce4e9;font:13px/1.6 Arial}.pp-side nav a[aria-current]{background:#edf3f7;border-left:3px solid #175c80;font-weight:700}.pp-steps{padding-left:25px}.pp-steps li{padding:15px 0;border-bottom:1px solid #dce4e9}.pp-steps h3{font:600 17px Arial;margin-bottom:12px}.pp-trust{padding-block:35px;border-block:1px solid #dce4e9;margin-bottom:25px}.pp-trust h2{font:32px Georgia}.pp-trust p{max-width:720px;color:#526575}.pp-trust-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.pp-trust-links a{display:flex;gap:9px;align-items:center;padding:13px 16px;border:1px solid #dce4e9;font:600 13px Arial}.pp-breadcrumb{display:flex;gap:12px;font:13px Arial;margin-bottom:28px}.pp-publisher-note{font:13px/1.7 Arial;color:#617485}.er-nav button{min-width:85px;width:auto;font:600 12px Arial}#er-prev,#er-next{min-width:85px;width:auto!important;font:600 12px Arial!important;padding-inline:12px}.pp-side a,.pp-section a{overflow-wrap:anywhere}a:focus-visible,button:focus-visible{outline:3px solid #af8530;outline-offset:3px}.pp-section .pp-button svg{max-width:22px}html:has(.pp-page){scroll-behavior:auto}#ap-footer .footer-legal{flex-wrap:wrap}
@media(max-width:900px){.pp-layout{grid-template-columns:1fr;gap:25px}.pp-side{position:static;grid-row:1;max-height:none}.pp-side nav{display:flex;flex-wrap:wrap;gap:8px}.pp-side nav a{border:1px solid #dce4e9;padding:8px 12px}.pp-page{padding-top:30px}}@media(max-width:600px){.pp-cards{grid-template-columns:1fr}.pp-hero h1{font-size:34px}.pp-section h2{font-size:25px}.pp-trust-links a{flex:1 1 135px}.pp-layout{min-width:0}.pp-button{font-size:12px}.pp-cards article{padding:20px}}

#er-spotlight .er-copy h3{font-size:clamp(25px,2.7vw,36px);line-height:1.22}#er-spotlight [hidden]{display:none!important}.er-lede{line-height:1.7}

.er-doi[href="https://doi.org/"]{display:none!important}