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(width<=850px){.site-header{padding:0 1.2rem}.site-header .desktop-nav{display:none}.mobile-nav{display:block;position:relative}.mobile-nav summary{min-height:var(--ly-touch-target);border:1px solid var(--ly-rule-strong);cursor:pointer;letter-spacing:.12em;text-transform:uppercase;align-items:center;padding:0 .9rem;font:600 .68rem/1 IBM Plex Mono,monospace;list-style:none;display:inline-flex}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav[open] summary{background:var(--ly-ink);color:var(--ly-paper)}.mobile-nav nav{z-index:20;border:1px solid var(--ly-rule-strong);background:var(--ly-paper);width:min(78vw,280px);box-shadow:9px 9px 0 var(--ly-clay);gap:0;padding:.45rem;display:grid;position:absolute;top:calc(100% + .6rem);right:0}@supports (color:color-mix(in lab, red, red)){.mobile-nav nav{box-shadow:9px 9px 0 color-mix(in oklch, var(--ly-clay), transparent 84%)}}.mobile-nav nav a{min-height:var(--ly-touch-target);border-bottom:1px solid var(--ly-rule);align-items:center;padding:0 .8rem;display:flex}.hero{grid-template-columns:1fr}.hero-copy{padding:5rem 1.4rem}.evidence-diagram{border-left:0;border-top:1px solid var(--ly-rule);min-height:500px}.proof-strip{grid-template-columns:1fr;gap:.6rem;padding:1.2rem}.proof-strip strong{text-align:left}.areas{padding:5rem 1.2rem}.section-lead{grid-template-columns:1fr;gap:1.4rem}.area-grid{grid-template-columns:1fr}.area-card{border-right:0;border-bottom:1px solid var(--ly-rule);min-height:320px}.area-card:last-child{border-bottom:0}.area-label{margin-top:3rem}.method-band{grid-template-columns:1fr;padding:5rem 1.4rem}.evidence-record{padding:5rem 1.2rem}.record-grid,.governance-grid{grid-template-columns:1fr}.record-grid article,.governance-grid article{border-right:0;border-bottom:1px solid var(--ly-rule-strong)}.record-grid article:last-child,.governance-grid article:last-child{border-bottom:0}.governance-grid{margin:0 0 4rem}.site-footer{grid-template-columns:1fr;padding:3rem 1.2rem}.content-page{padding:4rem 1.3rem}.content-page>header{grid-template-columns:1fr;gap:1.5rem}.content-cards{grid-template-columns:1fr;margin:0}.footer-links{grid-template-columns:1fr 1fr}.hero-actions{flex-direction:column;align-items:flex-start}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.area-card,.nav-link{transition:none}}