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0;width:min(320px,86vw);transform:translateX(-100%);transition:transform 180ms ease}.site-sidebar.open{transform:translateX(0)}.scrim.open{display:block;position:fixed;inset:0;background:rgba(0,0,0,.36);z-index:25}.icon-btn{display:inline-grid;place-items:center}.content-grid{grid-template-columns:1fr}.toc-panel{position:static;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:16px;order:-1}}@media(max-width:720px){.topbar{padding:0 14px}.topbar-links{display:none}.content-grid{padding:24px 16px 36px}.category-grid{grid-template-columns:1fr}h1{font-size:2rem}.site-footer,.page-nav{flex-direction:column}}