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span{background:#f6f2ec;border-radius:4px;padding:3px 7px}.challenge-empty-state{background:color-mix(in srgb, var(--mint) 22%, white);color:var(--ink);border-radius:7px;padding:22px;font-size:14px}.challenge-session-heading{padding-inline:0}.challenge-progress{color:var(--muted);align-items:center;gap:13px;margin:0 0 18px;padding:0 6px;font-size:13px;font-weight:700;display:flex}.challenge-progress span.current,.challenge-progress span.complete{color:var(--purple-dark)}.challenge-progress i{background:var(--line);width:50px;height:2px}.challenge-progress i.complete{background:var(--orange)}.challenge-session-card{border:1px solid var(--line);background:#fff;border-radius:7px;padding:23px 27px}.challenge-session-card-heading{justify-content:space-between;align-items:center;gap:10px;display:flex}.challenge-time{color:var(--muted);font-size:12px}.challenge-session-card h2{color:var(--ink);margin:17px 0 8px;font-size:clamp(20px,3vw,27px);line-height:1.4}.challenge-session-instruction{color:var(--muted);margin:0 0 17px;font-size:14px;line-height:1.6}.challenge-session-actions{flex-wrap:wrap;align-items:center;gap:18px;margin-top:14px;display:flex}.challenge-result-actions{gap:12px}.challenge-result-actions .button{text-align:center;white-space:normal;flex:1 1 0;justify-content:center;align-items:center;min-width:0;height:48px;min-height:48px;margin:0;padding:8px 15px;line-height:1.25;display:inline-flex}.challenge-session-hint{max-width:720px;font-size:13px}.challenge-solution-card{background:color-mix(in srgb, var(--vanilla) 18%, white)}.challenge-answer-reveal{background:color-mix(in srgb, var(--mint) 37%, white);color:var(--ink);border-radius:5px;margin-top:16px;padding:12px;font-size:15px}.challenge-answer-reveal b{margin-left:5px}.challenge-session .back-link{min-height:44px}@media (width<=760px){.mode-switch{grid-template-columns:1fr;gap:9px}.mode-choice{min-height:95px}.challenge-hub,.challenge-session{padding-top:14px}.challenge-hub-heading,.challenge-session-heading{align-items:flex-start;padding-inline:0}.challenge-hub-stamp{flex-basis:48px;width:48px;height:48px;font-size:23px}.daily-challenge{grid-template-columns:1fr;padding:19px}.daily-challenge-art{display:none}.challenge-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.challenge-library-card{min-height:230px}}@media (width<=520px){.challenge-category-tabs{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.challenge-category-tab{text-align:left;border-radius:5px}.challenge-category-tab.active{border-color:var(--purple);background:color-mix(in srgb, var(--purple) 18%, white)}.challenge-card-grid{grid-template-columns:1fr}.challenge-library-card{min-height:190px}.challenge-session-card{padding:18px 15px}.challenge-session-heading{flex-direction:column;gap:10px}.challenge-result-actions{flex-direction:column;align-items:stretch;gap:10px}.challenge-result-actions .button{flex:0 0 48px;width:100%}}