*,*::before,*::after{box-sizing:border-box}html,body{max-width:100%;overflow-x:hidden}:root{--r:#f00;--l:#d9d9d9;--d:#404040;--m:#808080;--o:#f5f5f5;--f:Calibri,Carlito,"Segoe UI",Arial,sans-serif;--max:860px}body{font-family:var(--f);margin:0;line-height:1.7;color:#000}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}p{margin:0 0 1rem;overflow-wrap:break-word}h1,h2,h3{line-height:1.2;letter-spacing:0;overflow-wrap:anywhere}h1{font-size:clamp(2rem,5vw,3rem)}h2{font-size:clamp(1.35rem,3vw,1.8rem);margin:36px 0 1rem}h3{font-size:1.06rem}.page-header__inner,.article-inner{max-width:var(--max);width:100%;min-width:0;margin:auto}.article-wrapper{padding:64px 24px 40px}.article-meta{display:flex;gap:14px;flex-wrap:wrap;color:var(--m);font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;border-bottom:1px solid var(--l);padding-bottom:14px;margin-bottom:30px}.article-lead{font-size:1.1rem;color:var(--d)}.article-figure{border:1px solid var(--l);background:#fafafa;padding:10px;margin:0 0 30px}.article-figure figcaption{font-size:.84rem;color:var(--m);margin-top:10px}.highlight-box{border-left:4px solid var(--r);background:var(--o);padding:20px;margin:24px 0}.formula{border:2px solid #000;background:#fff;padding:18px;text-align:center;font-weight:700;margin:20px 0}.checklist{padding-left:1.3rem}.checklist li{margin-bottom:.55rem}.article-sources{border-top:1px solid var(--l);margin-top:36px;padding-top:4px}.article-sources a{text-decoration:underline;text-decoration-color:var(--r);text-underline-offset:3px}.entry-category{font-size:.68rem;font-weight:700;text-transform:uppercase;padding:3px 8px;border:1px solid #bfbfbf;background:#f2f2f2}.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.related-card{border:1px solid var(--l);padding:22px}.related-card__link{color:var(--r);font-weight:700;text-transform:uppercase;font-size:.75rem}.article-nav{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid var(--l);padding-top:18px;margin-top:42px}.nav-toggle{display:none;background:#fff;border:1px solid #d9d9d9;padding:8px;color:#000;cursor:pointer}@media(max-width:980px){.site-header__inner{position:relative}.nav-toggle{display:flex;align-items:center;justify-content:center;margin-left:auto;flex:0 0 auto}.site-header .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-top:1px solid #d9d9d9;border-bottom:3px solid #f00;box-shadow:0 8px 16px rgba(0,0,0,.12)}.site-header .site-nav.is-open{display:block}.site-header .site-nav__list{display:block;padding:8px 20px}.site-header .site-nav__list a{padding:12px 4px}}@media(max-width:600px){h1{font-size:1.72rem;line-height:1.16}.article-wrapper{padding-left:20px;padding-right:20px}.related-grid{grid-template-columns:1fr}}