.xch-root{background:var(--fbl-ground,#f5f2ea);min-height:100vh;color:var(--fbl-body,#22333f);font-family:var(--font-instrument-sans,"Instrument Sans", system-ui, sans-serif);-webkit-font-smoothing:antialiased}.xch-root a{color:inherit;text-decoration:none}.xch-serif{font-family:var(--font-instrument-serif,"Instrument Serif", Georgia, serif);font-weight:400}@keyframes xch-fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.xch-screen{animation:.3s xch-fade}@media (prefers-reduced-motion:reduce){.xch-screen{animation:none}}.xch-row{flex:1;align-items:flex-start;width:100%;max-width:1320px;margin:0 auto;display:flex}.xch-rail{background:var(--fbl-stone,#eee9df);border-right:1px solid #0b22331f;flex-shrink:0;align-self:flex-start;width:236px;max-height:100vh;padding:20px 14px 40px;position:sticky;top:0;overflow-y:auto}.xch-main{background:var(--fbl-ground,#f5f2ea);flex:1;min-width:0}.xch-rail-item{text-align:left;cursor:pointer;border:none;width:100%;margin-bottom:1px;padding:8px 10px;font-size:13px;line-height:1.3;display:block}.xch-grid{display:grid}@media (max-width:960px){.xch-row{flex-direction:column}.xch-rail{border-bottom:1px solid #0b22331f;border-right:none;width:100%;max-height:none;position:static}.xch-grid{grid-template-columns:1fr!important}.xch-pad{padding-left:24px!important;padding-right:24px!important}}