.breadcrumbs{margin-bottom:var(--space-4);font-size:.85rem}.breadcrumbs__list{flex-wrap:wrap;align-items:center;gap:.25rem;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs__item{align-items:center;margin:0;display:inline-flex}.breadcrumbs__item a{color:var(--color-link)}.breadcrumbs__item a:hover{color:var(--color-primary)}.breadcrumbs__current{color:var(--color-text-muted)}.breadcrumbs__item:not(:last-child):after{content:"›";color:var(--color-text-muted);opacity:.55;margin-left:.35rem;font-weight:400}.page-sidebar{gap:var(--space-4);flex-direction:column;display:flex}.page-sidebar__catalog{background:var(--color-surface);box-shadow:var(--shadow-sm);border-radius:var(--radius-md);overflow:hidden}.page-sidebar__title{font-family:var(--font-body);border-bottom:1px solid var(--color-border);font-size:.95rem;font-weight:700;display:none}.page-sidebar__title,.page-sidebar__toggle{padding:var(--space-4) var(--space-5);background:var(--color-surface-muted);color:var(--color-text);letter-spacing:.01em;margin:0}.page-sidebar__toggle{width:100%;font:inherit;text-align:left;cursor:pointer;border:0;border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;font-size:.95rem;font-weight:700;display:flex}.page-sidebar__toggle:after{content:"";border-right:2px solid var(--color-text-muted);border-bottom:2px solid var(--color-text-muted);width:.5rem;height:.5rem;margin-left:var(--space-3);flex-shrink:0;margin-bottom:.2rem;transition:transform .2s;transform:rotate(45deg)}.page-sidebar__toggle[aria-expanded=true]:after{margin-bottom:-.15rem;transform:rotate(-135deg)}.page-sidebar__nav{display:none}.page-sidebar__nav.is-open{display:block}.page-sidebar__list{padding:var(--space-2) 0;margin:0;list-style:none}.page-sidebar__link{padding:.55rem var(--space-5);color:var(--color-text-muted);border-left:3px solid #0000;font-size:.95rem;line-height:1.4;transition:color .2s,background .2s,border-color .2s;display:block}.page-sidebar__link.is-active,.page-sidebar__link:hover{color:var(--color-primary);background:var(--color-surface-muted)}.page-sidebar__link.is-active{border-left-color:var(--color-primary);font-weight:700}.page-sidebar__banner{border-radius:var(--radius-md);box-shadow:var(--shadow-sm);line-height:0;display:block;overflow:hidden}.page-sidebar__banner img{width:100%;height:auto;display:block}@media (width>=900px){.page-sidebar{top:calc(var(--header-h-compact) + var(--space-4));position:sticky}.page-sidebar__toggle{display:none}.page-sidebar__nav,.page-sidebar__title{display:block}}.page-shell{gap:var(--space-5);align-items:start;display:grid}.page-shell__main{min-width:0}@media (width>=900px){.page-shell{gap:var(--space-6);grid-template-columns:280px minmax(0,1fr)}}