.article-shell{max-width:920px;margin:64px auto 110px;padding:0 24px}.article-shell h1{font-size:clamp(36px,6vw,60px);max-width:850px}.article-shell h2{font-size:28px;line-height:1.2;margin-top:42px}.article-shell h3{font-size:20px;margin-top:28px}.article-shell p,.article-shell li{color:#485852}.article-shell a{color:#087a5a;font-weight:700}.lead{font-size:20px;max-width:760px}.meta{color:#74817c;font-size:13px;margin:18px 0 34px}.callout{background:#dff4e9;border-left:4px solid #087a5a;padding:18px 20px;border-radius:0 12px 12px 0;margin:30px 0}.formula{background:#12251e;color:#fff;padding:20px;border-radius:14px;font-weight:750;margin:24px 0}.sourcebox{border-top:1px solid #dce4df;margin-top:48px;padding-top:24px;font-size:14px}.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:32px}.guide-card{background:#fff;border:1px solid #dce4df;border-radius:16px;padding:24px;text-decoration:none;color:#12251e!important}.guide-card:hover{border-color:#087a5a;transform:translateY(-2px)}.guide-card b{display:block;font-size:20px;margin-bottom:8px}.guide-card span{font-size:14px;color:#61706a}.simple-list li{margin:10px 0}.cta-box{background:#12251e;color:#fff;border-radius:18px;padding:28px;margin-top:44px}.cta-box p{color:#c7d4cf}.cta-box a{display:inline-block;background:#d8f44a;color:#12251e;padding:11px 16px;border-radius:10px;text-decoration:none}@media(max-width:700px){.guide-grid{grid-template-columns:1fr}.article-shell{margin-top:42px}.article-shell h1{font-size:38px}}