.explore-index-shell{display:flex;flex-direction:column;min-height:100vh;background:radial-gradient(1200px 600px at 80% -10%,rgba(143,182,255,0.06),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(255,179,122,0.04),transparent 60%),var(--bg-shell)}.explore-header--index{display:block;padding:32px 48px 24px;border-bottom:1px solid var(--line)}.index-title{font-size:36px;letter-spacing:-0.015em;margin:6px 0 10px;max-width:24ch}.index-subtitle{max-width:72ch;font-size:15px;line-height:1.55;color:var(--ink-mute)}.index-main{flex:1 1 auto;padding:36px 48px 56px;display:flex;flex-direction:column;gap:18px}.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}.topic-card{position:relative;display:flex;flex-direction:column;gap:12px;padding:22px 22px 18px;background:linear-gradient(180deg,rgba(143,182,255,0.025),transparent 60%),var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-2,12px);text-decoration:none;color:var(--ink);transition:border-color 0.15s,transform 0.12s,background 0.15s,box-shadow 0.2s;overflow:hidden}.topic-card::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;background:linear-gradient(90deg,var(--accent),transparent 70%);opacity:0.7}.topic-card:focus-visible{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 12px 32px -16px rgba(143,182,255,0.35);background:linear-gradient(180deg,rgba(143,182,255,0.05),transparent 60%),var(--bg-elev)}.topic-card-eyebrow{font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.18em;text-transform:uppercase;color:var(--ink-quiet)}.topic-card-title{font-family:var(--font-display);font-weight:500;font-size:23px;line-height:1.15;letter-spacing:-0.01em;color:var(--ink);margin:0}.topic-card-subtitle{font-size:13.5px;line-height:1.5;color:var(--ink-mute);margin:0}.topic-card-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:4px 10px;margin:4px 0 0;padding:10px 0 0;border-top:1px dashed var(--line)}.topic-card-stat{display:flex;flex-direction:column;gap:2px}.topic-card-stat dt{font-family:var(--font-mono);font-size:9.5px;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-quiet)}.topic-card-stat dd{margin:0;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:17px;font-weight:500;color:var(--ink)}.topic-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:6px}.topic-card-cta{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:0.06em;text-transform:uppercase;color:var(--accent)}.topic-card-cta .arrow{transition:transform 0.15s;display:inline-block}.topic-card-updated{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-quiet);letter-spacing:0.04em}.topic-card-updated[hidden]{display:none}.topic-card-burst{display:inline-flex;align-items:center;gap:5px;padding:2px 7px;background:rgba(255,179,122,0.10);border:1px solid rgba(255,179,122,0.35);border-radius:999px;font-family:var(--font-mono);font-size:9.5px;letter-spacing:0.1em;text-transform:uppercase;color:var(--accent-hot);margin-left:auto}.topic-card-burst svg{width:10px;height:10px}.topic-card--skeleton{pointer-events:none}.skel{background:linear-gradient(90deg,var(--bg-elev) 0%,rgba(143,182,255,0.06) 50%,var(--bg-elev) 100%);background-size:200% 100%;animation:skel-shimmer 1.4s linear infinite;border-radius:4px}.skel-eyebrow{height:10px;width:30%}.skel-title{height:22px;width:60%;margin-top:6px}.skel-line{height:12px;width:100%;margin-top:8px}.skel-line.short{width:70%}@keyframes skel-shimmer{from{background-position:200% 0}to{background-position:-200% 0}}@media (prefers-reduced-motion:reduce){.skel{animation:none}}.index-error{font-family:var(--font-mono);font-size:12.5px;color:var(--accent-hot);padding:10px 14px;border:1px solid rgba(255,179,122,0.35);border-radius:var(--r-1,6px);background:rgba(255,179,122,0.06);max-width:720px}.adj-callout{margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px}.adj-callout-link{display:flex;flex-direction:column;gap:4px;padding:16px 20px;border:1px solid var(--line);border-left:2px solid var(--accent);border-radius:var(--r-2,8px);background:linear-gradient(90deg,rgba(143,182,255,0.05),transparent 60%),var(--bg-panel);text-decoration:none;color:var(--ink);transition:border-color 0.15s,background 0.15s,transform 0.12s}.adj-callout-link:focus-visible{border-color:var(--accent);background:linear-gradient(90deg,rgba(143,182,255,0.08),transparent 60%),var(--bg-elev);transform:translateY(-1px)}.adj-callout-eyebrow{font-family:var(--font-mono);font-size:10px;letter-spacing:0.18em;text-transform:uppercase;color:var(--ink-quiet)}.adj-callout-title{font-family:var(--font-display);font-weight:500;font-size:18px;letter-spacing:-0.005em;color:var(--ink)}.adj-callout-sub{font-size:13px;line-height:1.5;color:var(--ink-mute);max-width:78ch}@media (max-width:720px){.explore-header--index{padding:22px 20px 16px}.index-title{font-size:28px}.index-main{padding:24px 20px 40px}.topic-grid{grid-template-columns:1fr}}@media (hover:hover){.topic-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 12px 32px -16px rgba(143,182,255,0.35);background:linear-gradient(180deg,rgba(143,182,255,0.05),transparent 60%),var(--bg-elev)}.topic-card:hover .topic-card-cta .arrow{transform:translate(2px,-2px)}.adj-callout-link:hover{border-color:var(--accent);background:linear-gradient(90deg,rgba(143,182,255,0.08),transparent 60%),var(--bg-elev);transform:translateY(-1px)}}