.knowledge-hub { margin: 0 0 48px; }
.knowledge-hub h2, .knowledge-all-heading { color: var(--ink, #1d1d1f); font-size: clamp(24px, 3vw, 34px); line-height: 1.25; }
.knowledge-hub-intro { max-width: 840px; line-height: 1.65; color: var(--muted, #6e6e73); margin: 12px 0 24px; }
.knowledge-topic-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.knowledge-topic-nav a { color: var(--blue, #0071e3); border: 1px solid var(--line, rgba(0,0,0,.1)); border-radius: 999px; padding: 9px 14px; text-decoration: none; font-size: 14px; }
.knowledge-topic-nav a:focus-visible, .knowledge-topic-card a:focus-visible { outline: 3px solid var(--blue, #0071e3); outline-offset: 4px; }
.knowledge-topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.knowledge-topic-card { min-width: 0; border: 1px solid var(--line, rgba(0,0,0,.1)); border-radius: var(--radius-card, 18px); padding: 24px; background: var(--panel, #fbfbfd); scroll-margin-top: 100px; }
.knowledge-topic-card h3 { font-size: 19px; line-height: 1.4; margin: 0 0 12px; color: var(--ink, #1d1d1f); }
.knowledge-topic-card p { font-size: 15px; line-height: 1.6; color: var(--muted, #6e6e73); margin: 0 0 16px; }
.knowledge-topic-card ul { padding-left: 20px; margin: 0; }
.knowledge-topic-card li { margin: 9px 0; }
.knowledge-topic-card a { color: var(--blue, #0071e3); line-height: 1.5; text-underline-offset: 3px; overflow-wrap: anywhere; }
.knowledge-hub-actions { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 24px; }
.knowledge-hub-actions a { color: var(--blue, #0071e3); font-weight: 600; text-underline-offset: 3px; }
.knowledge-all-heading { margin: 0 0 24px; scroll-margin-top: 100px; }
@media (max-width: 960px) { .knowledge-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .knowledge-topic-grid { grid-template-columns: minmax(0, 1fr); } .knowledge-topic-card { padding: 20px; } }