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/* Challenge-led research taxonomy */
.challenge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:28px 0 64px}.challenge-card{display:block;padding:28px;border:1px solid #d6dcd9;background:#f1f3ef;color:#12345f;text-decoration:none;transition:border-color .2s,transform .2s}.challenge-card:hover{border-color:#f5641e;transform:translateY(-3px)}.challenge-card small{font-size:11px;letter-spacing:1px}.challenge-card h3{font-size:23px;line-height:1.4;margin:16px 0}.challenge-card p{font-size:15px;line-height:1.8}.challenge-route{color:#ad4b20;font-size:13px!important}.challenge-group{scroll-margin-top:100px}.challenge-group>.collection-heading{border-top:2px solid #12345f;padding-top:26px}.challenge-context{max-width:1020px;margin:0 auto 40px;padding:24px 28px;background:#edf1ef;border-left:3px solid #f5641e}.challenge-context>a{font-weight:700;color:#12345f}.challenge-context p{line-height:1.8;margin:10px 0 0}.challenge-card:focus-visible{outline:3px solid #f5641e;outline-offset:3px}@media(max-width:680px){.challenge-grid{grid-template-columns:1fr;gap:14px}.challenge-card{padding:22px}.challenge-context{margin:0 20px 30px;padding:20px}}@media print{.challenge-context{break-inside:avoid}.challenge-grid{display:block}}
.github-link{display:inline-flex;align-items:center;border:1px solid #c1cbc9;border-radius:4px;padding:7px 12px;color:#12345f;font-size:12px;font-weight:600;line-height:1.5;white-space:nowrap}.github-link:hover{border-color:#f5641e;color:#bd5020;background:#f6eee5}.hero-source{display:flex;justify-content:center;align-items:center;gap:14px;flex-wrap:wrap}