.norm-main{max-width:1200px;margin:auto;padding:32px 24px 64px}.norm-main>section,.norm-main>aside,.norm-main>nav,.norm-main>div{margin-top:28px}.norm-hero{max-width:850px;padding:28px 0 8px}.norm-hero h1{font-size:clamp(2rem,4vw,3.3rem);line-height:1.15;margin:12px 0 20px}.norm-hero>p:not(.eyebrow){font-size:1.125rem;color:var(--muted)}.norm-scope{max-width:850px;font-size:.9375rem;color:var(--muted)}.norm-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.norm-topic{display:flex;flex-direction:column;gap:8px}.norm-topic h3{margin:8px 0}.norm-topic p{margin:0;color:var(--muted)}.norm-topic .badge{align-self:flex-start}.norm-toc ul{display:flex;flex-wrap:wrap;gap:12px 28px;padding-left:20px}.norm-toc h2{font-size:1.1rem}.norm-news{border-left:4px solid var(--accent);background:var(--tint)}.norm-calculator{display:flex;align-items:center;justify-content:space-between;gap:24px}.norm-warning{padding:20px;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius);background:var(--soft)}.norm-warning p{margin:8px 0 0}.norm-history{padding-left:20px}.norm-history p{margin:6px 0}.norm-history small{color:var(--muted)}.norm-main h2{scroll-margin-top:100px}.norm-main section{scroll-margin-top:100px}.norm-breadcrumb{font-size:.9375rem}.norm-box{margin:18px 0}.norm-formula{font-variant-numeric:tabular-nums}.site-header nav [aria-current=page]{color:var(--accent);text-decoration:underline;text-underline-offset:6px}@media(max-width:700px){.norm-grid{grid-template-columns:1fr}.norm-main{padding:16px 18px 40px}.norm-calculator{align-items:stretch;flex-direction:column}.norm-toc ul{display:block}.norm-toc li{margin:10px 0}}
.site-header nav a:nth-child(2){border-bottom:0}

/* Reading measure and keyboard/touch affordances, scoped to editorial pages. */
.norm-article{max-width:880px}
.norm-main{overflow-wrap:anywhere}
.norm-main .badge{font-size:.875rem}
.norm-toc a{display:inline-flex;align-items:center;min-height:44px}
.norm-main [id]{scroll-margin-top:24px}
.norm-calculator .button{flex-shrink:0}
.norm-main:focus{outline:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.norm-update{max-width:850px;color:var(--muted)}
.norm-update a{font-weight:700}
.norm-key-dates{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0 0}
.norm-key-dates div{padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--soft)}
.norm-key-dates dt{font-size:.875rem;color:var(--muted)}
.norm-key-dates dd{margin:4px 0 0;font-weight:700}
.norm-equation{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:1.05rem;font-weight:700}
.norm-equation span:nth-child(even){color:var(--accent);font-size:1.35rem}
.norm-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.norm-table{width:100%;border-collapse:collapse;background:#fff}
.norm-table th,.norm-table td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.norm-table thead th{background:var(--soft);font-size:.9rem}
.norm-table tbody tr:last-child th,.norm-table tbody tr:last-child td{border-bottom:0}
.norm-table td:last-child,.norm-table th:last-child{text-align:right;white-space:nowrap}
.norm-values{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.norm-values div{padding:14px 16px;border-bottom:1px solid var(--line)}
.norm-values div:nth-child(odd){border-right:1px solid var(--line)}
.norm-values div:last-child{grid-column:1/-1;border-bottom:0;border-right:0}
.norm-values dt{font-size:.875rem;color:var(--muted)}
.norm-values dd{margin:4px 0 0;font-weight:700;font-variant-numeric:tabular-nums}
.norm-summary li,.norm-news li{margin:.55rem 0}
.norm-example h3{margin-top:28px}
.norm-calculation-steps li{margin:.65rem 0}
.norm-regime-warning h2{margin-top:0;font-size:1.25rem}
.norm-regime-warning a{display:inline-block;margin-top:8px;font-weight:700}
@media(max-width:760px){
 body:has(.norm-main) .site-header nav{flex-wrap:wrap;white-space:normal;overflow:visible;gap:4px 18px}
 body:has(.norm-main) .site-header nav a{min-height:44px;display:inline-flex;align-items:center}
 .norm-main .panel{padding:20px}
 .norm-toc ul{margin-bottom:0}
 .norm-toc li{margin:2px 0}
 .norm-values{grid-template-columns:1fr}
 .norm-values div,.norm-values div:nth-child(odd){border-right:0}
 .norm-values div:last-child{grid-column:auto}
 .norm-key-dates{grid-template-columns:1fr}
}