.bt-page-shell{max-width:1200px;padding:var(--space-6);margin:0 auto}.bt-page-header{justify-content:space-between;align-items:center;gap:var(--space-4);margin-bottom:var(--space-6);display:flex}.bt-page-title{color:var(--color-text);font-size:1.5rem;font-weight:700}.bt-page-subtitle{color:var(--color-muted);font-size:.95rem}.bt-grid{gap:var(--space-4);display:grid}.bt-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.bt-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}@media (width<=900px){.bt-page-shell{padding:var(--space-4)}.bt-grid-2,.bt-grid-3{grid-template-columns:1fr}}