.cs-head{display:grid;gap:16px;max-width:62ch;margin-bottom:clamp(28px,3.5vw,48px)}.band:not(.band-fog) .cs-copy{color:var(--on-ink)}.band:not(.band-fog) .cs-copy a{color:var(--signal)}.cs-copy{max-width:64ch}.band-fog .proof-figure{border-top-color:var(--rule-fog)}.band-fog .proof-figure .fig{color:var(--on-fog)}.band-fog .proof-figure .fig-label{color:var(--on-fog-muted)}.split>.left>.facts,.split>.right>.facts{grid-column:auto}.band:not(.band-fog) .facts div{border-top-color:var(--rule-ink)}.band:not(.band-fog) .facts dt{color:var(--on-ink-muted)}.cs-rule2{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(24px,3vw,56px)}.cs-rule2>li{display:grid;gap:6px;align-content:start;padding:16px 0 18px;border-top:1px solid var(--rule-ink)}.band-fog .cs-rule2>li{border-top-color:var(--rule-fog)}.cs-rule2 h3{margin:0;font-family:var(--f-display);font-weight:700;font-size:1.06rem;line-height:1.3}.cs-rule2 p{margin:0;color:var(--on-ink-muted);font-size:.98rem;line-height:1.55}.band-fog .cs-rule2 p{color:var(--on-fog-muted)}.cs-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));column-gap:clamp(16px,2vw,32px);row-gap:8px}.cs-steps>li{display:grid;gap:6px;align-content:start;padding-top:14px;border-top:1px solid var(--rule-ink)}.cs-steps .n{font-family:var(--f-mono);font-size:.74rem;color:var(--signal)}.cs-steps h3{margin:0;font-family:var(--f-display);font-weight:700;font-size:1.06rem;line-height:1.3}.cs-steps p{margin:0;color:var(--on-ink-muted);font-size:.96rem;line-height:1.5}.cs-cols{list-style:none;margin:0;padding:0;columns:3;column-gap:clamp(20px,2.5vw,40px);font-size:.95rem}.cs-cols li{break-inside:avoid;padding:7px 0;border-bottom:1px solid var(--rule-fog)}.cs-media{margin:0;display:grid;gap:10px}.cs-media figcaption{margin:0}.band-fog .cs-media figcaption{color:var(--on-fog-muted)}.cs-row+.cs-row{margin-top:clamp(40px,5vw,72px)}.cs-links{display:flex;flex-wrap:wrap;gap:8px 24px;margin:0}.cs-links a{display:inline-flex;align-items:center;min-height:44px}.cs-links a:not(.link-line){text-decoration:underline;text-underline-offset:3px}.cs-status{margin:0;display:flex;gap:8px 14px;flex-wrap:wrap}.cs-index .chapter{padding-block:clamp(36px,4.5vw,64px)}.cs-index .chapter:first-child{border-top:0;padding-top:0}.cs-index .chapter:last-child{padding-bottom:0}.cs-index .chapter-copy{grid-column:1 / span 5}.cs-index .chapter-copy .prose{font-size:1.02rem}@media(max-width:1024px){.cs-steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:20px}.cs-cols{columns:2}.cs-index .chapter-copy{grid-column:1 / -1}}@media(max-width:640px){.cs-rule2,.cs-steps{grid-template-columns:1fr}.cs-cols{columns:1}}