:root{--subpage-sidebar-width: 240px;--site-header-height: 72px}.subpage-layout{display:grid;grid-template-columns:var(--subpage-sidebar-width) minmax(0,1fr);gap:clamp(var(--spacing-lg),4vw,var(--spacing-2xl));padding:0 clamp(var(--spacing-md),4vw,var(--spacing-2xl));align-items:start;max-width:var(--width-max);margin:0 auto}.subpage-sidebar{position:sticky;top:var(--site-header-height);align-self:start;max-height:calc(100vh - var(--site-header-height));overflow-y:auto;padding:var(--spacing-lg) 0 var(--spacing-2xl);border-right:1px solid var(--color-mist);scrollbar-width:thin;scrollbar-color:var(--color-mist) transparent}.subpage-sidebar::-webkit-scrollbar{width:6px}.subpage-sidebar::-webkit-scrollbar-thumb{background:var(--color-mist);border-radius:3px}.subpage-sidebar-inner{padding-right:var(--spacing-md)}.subpage-sidebar-toggle{display:none}.subpage-sidebar-group{margin-bottom:var(--spacing-md)}.subpage-sidebar-group:last-child{margin-bottom:0}.subpage-sidebar-group-title{font-family:var(--font-mono);font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--color-ash);margin:0 0 6px;padding:0 0 0 14px;display:block}.subpage-sidebar-list{list-style:none;padding:0;margin:0}.subpage-sidebar-list li{margin:0}.subpage-sidebar-list a{display:block;padding:5px 0 5px 12px;border-left:2px solid transparent;font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:500;line-height:1.5;color:var(--color-charcoal);text-decoration:none;transition:color var(--duration-fast) var(--ease-out-quart),border-color var(--duration-fast) var(--ease-out-quart),background var(--duration-fast) var(--ease-out-quart)}.subpage-sidebar-list a:hover{color:var(--color-forest);background:var(--color-forest-dim)}.subpage-sidebar-list a[aria-current=page]{color:var(--color-forest);border-left-color:var(--color-forest);background:var(--color-forest-dim)}.subpage-main{padding:var(--spacing-xl) 0 var(--spacing-3xl);min-width:0}@media(max-width:880px){.subpage-layout{grid-template-columns:1fr;padding:0 var(--spacing-md)}.subpage-sidebar{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--color-mist);padding:var(--spacing-md) 0;margin-bottom:var(--spacing-md)}.subpage-sidebar-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--spacing-sm) 0;font-family:var(--font-display);font-weight:600;font-size:var(--fs-sm);color:var(--color-ink);background:transparent;border:0;cursor:pointer}.subpage-sidebar-toggle svg{transition:transform var(--duration-base) var(--ease-out-quart)}.subpage-sidebar-toggle[aria-expanded=true] svg{transform:rotate(180deg)}.subpage-sidebar-inner{display:none;padding-right:0;padding-top:var(--spacing-sm)}.subpage-sidebar-toggle[aria-expanded=true]+.subpage-sidebar-inner{display:block}.subpage-main{padding:var(--spacing-md) 0 var(--spacing-2xl)}}