.challenge-index[data-astro-cid-c2b6kics]{--glow: rgba(74, 124, 155, .5);--glass-bd: rgba(74, 124, 155, .25);--corner-sz: 14px;--corner-w: 1.5px}@keyframes glowPulse{0%,to{opacity:.5}50%{opacity:1}}.challenge-index[data-astro-cid-c2b6kics]{position:relative;padding-top:6rem;padding-bottom:var(--sp-32);min-height:100vh;background:#0d1520;color:var(--color-white);overflow:hidden}.challenge-bg[data-astro-cid-c2b6kics]{position:absolute;inset:0;pointer-events:none}.challenge-bg-grid[data-astro-cid-c2b6kics]{position:absolute;inset:0;background-image:radial-gradient(circle,rgba(74,124,155,.12) 1px,transparent 1px);background-size:28px 28px}.challenge-bg-glow[data-astro-cid-c2b6kics]{position:absolute;top:20%;right:10%;width:500px;height:400px;background:radial-gradient(ellipse,rgba(74,124,155,.07) 0%,transparent 65%)}.challenge-container[data-astro-cid-c2b6kics]{position:relative;max-width:720px;margin:0 auto;padding:var(--sp-16) var(--sp-8)}.challenge-header[data-astro-cid-c2b6kics]{margin-bottom:var(--sp-16)}.challenge-header[data-astro-cid-c2b6kics] h1[data-astro-cid-c2b6kics]{font-size:clamp(2.4rem,4vw + .5rem,3.6rem);color:var(--color-white);margin-bottom:var(--sp-4)}.challenge-rule[data-astro-cid-c2b6kics]{display:flex;align-items:center;gap:var(--sp-3);margin-bottom:var(--sp-6);animation:revealLine .7s var(--ease-out) .3s both;transform-origin:left}.rule-line[data-astro-cid-c2b6kics]{display:block;width:48px;height:1.5px;background:linear-gradient(90deg,var(--color-accent),rgba(74,124,155,.2));box-shadow:0 0 6px var(--glow)}.rule-dot[data-astro-cid-c2b6kics]{width:5px;height:5px;border-radius:50%;background:var(--color-accent);box-shadow:0 0 8px var(--glow);animation:glowPulse 2.2s ease-in-out infinite;flex-shrink:0}.subtitle[data-astro-cid-c2b6kics]{font-size:1.0625rem;color:var(--color-surface-muted);max-width:52ch;line-height:1.75}.empty[data-astro-cid-c2b6kics]{color:var(--color-surface-muted);font-style:italic}.post-list[data-astro-cid-c2b6kics]{list-style:none;display:flex;flex-direction:column}.post-link[data-astro-cid-c2b6kics]{position:relative;display:block;padding:var(--sp-8) 0;border-bottom:1px solid rgba(74,124,155,.15);transition:background .3s var(--ease-out)}.post-list[data-astro-cid-c2b6kics] li[data-astro-cid-c2b6kics]:first-child .post-link[data-astro-cid-c2b6kics]{border-top:1px solid rgba(74,124,155,.15)}.corner[data-astro-cid-c2b6kics]{position:absolute;width:var(--corner-sz);height:var(--corner-sz);opacity:0;transition:opacity .3s var(--ease-out)}.post-link[data-astro-cid-c2b6kics]:hover .corner[data-astro-cid-c2b6kics]{opacity:1}.corner--tl[data-astro-cid-c2b6kics]{top:4px;left:-2px;border-top:var(--corner-w) solid var(--color-accent);border-left:var(--corner-w) solid var(--color-accent)}.corner--br[data-astro-cid-c2b6kics]{bottom:4px;right:-2px;border-bottom:var(--corner-w) solid var(--color-accent);border-right:var(--corner-w) solid var(--color-accent)}.post-meta[data-astro-cid-c2b6kics]{display:flex;align-items:center;gap:var(--sp-4);margin-bottom:var(--sp-3);flex-wrap:wrap}.post-meta[data-astro-cid-c2b6kics] time[data-astro-cid-c2b6kics]{font-size:.8125rem;color:var(--color-surface-deep);letter-spacing:.04em}.tag-list[data-astro-cid-c2b6kics]{list-style:none;display:flex;gap:var(--sp-2);flex-wrap:wrap}.tag[data-astro-cid-c2b6kics]{font-size:.6875rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--color-accent);border:1px solid rgba(74,124,155,.35);background:#4a7c9b14;padding:2px var(--sp-2)}.post-link[data-astro-cid-c2b6kics] h2[data-astro-cid-c2b6kics]{font-size:clamp(1.2rem,2vw + .5rem,1.6rem);margin-bottom:var(--sp-2);color:var(--color-white);transition:color .25s var(--ease-out),text-decoration .25s}.post-link[data-astro-cid-c2b6kics]:hover h2[data-astro-cid-c2b6kics]{color:var(--color-accent);text-decoration:underline;text-underline-offset:4px}.post-link[data-astro-cid-c2b6kics] p[data-astro-cid-c2b6kics]{font-size:.9375rem;color:var(--color-surface-muted);line-height:1.7;max-width:60ch;margin-bottom:var(--sp-3)}.read-more[data-astro-cid-c2b6kics]{display:inline-flex;align-items:center;gap:var(--sp-2);font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--color-accent);opacity:0;transform:translate(-4px);transition:opacity .3s var(--ease-out),transform .3s var(--ease-out)}.post-link[data-astro-cid-c2b6kics]:hover .read-more[data-astro-cid-c2b6kics]{opacity:1;transform:translate(0)}.read-more[data-astro-cid-c2b6kics] svg[data-astro-cid-c2b6kics]{transition:transform .3s var(--ease-out);flex-shrink:0}.post-link[data-astro-cid-c2b6kics]:hover .read-more[data-astro-cid-c2b6kics] svg[data-astro-cid-c2b6kics]{transform:translate(3px)}@media(hover:none){.read-more[data-astro-cid-c2b6kics]{opacity:1;transform:none}}@media(max-width:640px){.challenge-container[data-astro-cid-c2b6kics]{padding:var(--sp-8) var(--sp-4)}}@media(prefers-reduced-motion:reduce){.rule-dot[data-astro-cid-c2b6kics]{animation:none}.challenge-rule[data-astro-cid-c2b6kics]{animation:none;transform:scaleX(1)}}