.category-section{margin-bottom:var(--gap-2xl)}.category-heading{display:flex;align-items:baseline;gap:var(--gap-sm);margin-bottom:var(--gap-lg)}.category-heading h2{font-family:var(--font-serif);font-size:1.25rem;font-weight:600;color:var(--ink);letter-spacing:.03em;flex-shrink:0}.category-heading h2 a{color:inherit;text-decoration:none}.category-heading h2 a:hover{text-decoration:underline;text-underline-offset:.2em}.category-heading .cat-count{font-family:var(--font-mono);font-size:.7rem;color:var(--muted);flex-shrink:0}.category-heading::after{content:'';flex:1;height:1px;background:var(--border);margin-left:var(--gap-sm)}.post-list{list-style:none;display:flex;flex-direction:column}.post-card{padding:var(--gap-md)0;border-bottom:1px solid var(--border)}.post-card:first-child{padding-top:0}.post-card-content{transition:transform .25s ease}.post-card:hover .post-card-content{transform:translateX(var(--gap-sm))}.post-card .post-date{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);letter-spacing:.02em;margin-bottom:2px}.post-card .post-title{font-family:var(--font-serif);font-size:1.05rem;font-weight:500;color:var(--ink);line-height:1.5;display:inline-block;transition:color .2s}.post-card:hover .post-title{color:var(--wisteria)}.post-card .post-description{font-size:.85rem;color:var(--ink-soft);margin-top:var(--gap-xs);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-card .post-tags{display:flex;gap:var(--gap-sm);margin-top:var(--gap-xs);flex-wrap:wrap}.post-card .post-tag{font-family:var(--font-ui);font-size:.68rem;color:var(--muted);letter-spacing:.03em}.post-card .post-tag::before{content:'#';opacity:.4;margin-right:.09em}.post-card .math-badge{display:inline-block;font-family:var(--font-mono);font-size:.6rem;color:var(--wisteria-dim);background:0 0;border:1px solid var(--wisteria-dim);padding:0 .5em;border-radius:3px;margin-left:var(--gap-xs);vertical-align:middle;opacity:.6}.more-toggle{display:inline-flex;align-items:center;gap:.33em;margin-top:var(--gap-md);font-family:var(--font-ui);font-size:.75rem;font-weight:500;color:var(--muted);letter-spacing:.04em;cursor:pointer;background:0 0;border:none;padding:4px 0;transition:color .2s}.more-toggle:hover{color:var(--ink)}.more-toggle .arrow{display:inline-block;transition:transform .3s ease;font-size:.65rem}.more-toggle.expanded .arrow{transform:rotate(180deg)}.post-card.hidden-card{display:none}.post-card.hidden-card.visible{display:block;animation:fadeSlide .4s ease both}@keyframes fadeSlide{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.category-section{margin-bottom:var(--gap-xl)}}@media(max-width:480px){.post-card .post-title{font-size:.95rem}.category-section{margin-bottom:var(--gap-lg)}.category-heading{margin-bottom:var(--gap-md)}}