.challenge-accordion{max-width:900px;margin:0 auto}.accordion-item{position:relative}.accordion-header{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:1.5rem;padding:1.5rem;background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:8px;text-align:left;cursor:pointer;transition:all var(--duration-quick) var(--ease-out);min-height:44px}.accordion-header:hover{border-color:var(--accent-primary);background:var(--accent-glow)}.accordion-header:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.accordion-header.open{border-bottom-left-radius:0;border-bottom-right-radius:0;border-bottom-color:transparent;background:var(--accent-glow)}.header-content{display:flex;align-items:flex-start;gap:1rem;flex:1}.challenge-icon{font-size:2rem;flex-shrink:0;line-height:1}.text-content{flex:1}.challenge-title{font-size:var(--text-2xl);font-weight:var(--font-semibold);color:var(--text-primary);margin-bottom:.5rem;line-height:var(--line-height-snug)}.challenge-summary{font-size:var(--text-base);color:var(--text-tertiary);line-height:var(--line-height-relaxed);max-width:65ch}.accordion-icon{width:24px;height:24px;color:var(--accent-primary);flex-shrink:0;margin-top:.25rem}.accordion-content{padding:1.5rem;background:var(--bg-elevated);border:1px solid var(--border-default);border-top:none;border-bottom-left-radius:8px;border-bottom-right-radius:8px}.challenge-details{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.75rem}.detail-item{display:flex;align-items:flex-start;gap:.75rem;font-size:var(--text-base);color:var(--text-secondary);line-height:var(--line-height-loose)}.check-icon{width:20px;height:20px;color:var(--accent-primary);flex-shrink:0;margin-top:.125rem}@media (max-width:767px){.accordion-header{padding:1rem;gap:1rem}.challenge-icon{font-size:1.5rem}.challenge-title{font-size:var(--text-xl)}.challenge-summary{font-size:var(--text-sm)}.accordion-content{padding:1rem}.detail-item{font-size:var(--text-sm)}}@media (min-width:768px) and (max-width:1023px){.accordion-content,.accordion-header{padding:1.25rem}}@media (prefers-contrast:high){.accordion-header{border-width:2px}.accordion-header:focus-visible{outline-width:3px}}@media (prefers-reduced-motion:reduce){.accordion-header{transition:none}}