.rs-reading-rail{background:#f5f9fa!important;border-left:1px solid #e1eaed}.rs-reading-rail>p{font:11px/1.6 Arial,sans-serif;color:#7e949f}.rs-reading-filters{display:flex;flex-wrap:wrap;gap:5px;margin:15px 0 10px}.rs-reading-filters button{border:1px solid #c9dfe2;border-radius:14px;background:white;color:#497782;font:9px Arial;padding:6px 9px;cursor:pointer}.rs-reading-filters button[aria-pressed=true]{background:#3c8790;color:white}.rs-reading-rail .research-link{display:flex;gap:10px;padding:18px 0;border-bottom:1px solid #e0e9eb;text-decoration:none}.rs-reading-rail .resource-copy{min-width:0;flex:1}.rs-reading-rail .resource-copy small{display:block;font:9px/1.5 Arial;color:#7e9ba7;letter-spacing:.02em}.rs-reading-rail .resource-copy strong{display:block;margin:6px 0;font:18px/1.15 Georgia,serif;color:#33515e}.rs-reading-rail .resource-copy>span{display:block;font:10px/1.6 Arial;color:#7e949f}.rs-reading-rail .resource-symbol{flex:0 0 26px;height:32px;font-size:18px;color:#438b94}.rs-reading-rail .research-link>b{font:12px Arial;color:#63929a}.rs-reading-rail .rs-related-reading{margin-top:24px}.rs-related-reading h3{font:20px Georgia;color:#33515e}.rs-related-reading a{display:block;padding:9px 0;border-bottom:1px solid #e0e9eb;font:11px/1.4 Arial;color:#3d7b86;text-decoration:none}.rs-related-reading a:hover{text-decoration:underline}.opening-source-note{font:11px/1.5 Arial!important;color:#7e949f!important}
@media(max-width:800px){.rs-reading-rail{border-left:0;border-top:1px solid #e1eaed}.rs-reading-rail .resource-copy strong{font-size:18px}}

/* Keep supporting resources narrower than the contribution canvas. */
@media(min-width:801px){body.rs-subject-page.has-topic-resources .wrap{grid-template-columns:minmax(0,1fr) 220px}body.rs-subject-page .resource-sidebar.rs-reading-rail{padding:18px 14px}.rs-reading-rail h2{font-size:22px;line-height:1.15}}