.source-section { margin: 2.5rem 0; }
.source-section p { font-size: 1rem; line-height: 1.8; }
.source-card { margin: 1rem 0; padding: 1.25rem 1.5rem; background: #fff; border: 1px solid #dce1e8; border-radius: .75rem; }
.source-card h3 { margin: 0 0 .5rem; color: #213451; font-size: 1.15rem; }
.source-card p { margin: 0 0 1rem; }
.source-card summary { cursor: pointer; color: #213451; font-size: 1rem; font-weight: 600; padding: .35rem 0; }
.source-card summary:focus-visible { outline: 2px solid #314567; outline-offset: 4px; }
.source-list { padding-left: 1.3rem; }
.source-list li { margin: 1rem 0; font-size: 1rem; line-height: 1.6; }
.source-list a { overflow-wrap: anywhere; text-decoration: underline; text-underline-offset: .2em; }
.source-pages { display: block; font-size: .9rem; color: #526073; }
.source-format { font-size: .8rem; font-weight: 600; }
.source-updated { color: #526073; font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; column-gap: 1.1rem; row-gap: .5rem; }
@media(max-width:600px) { .source-card { padding: 1rem; } }