.cat-subnav{position:sticky;top:64px;z-index:900;background:var(--nav-bg,rgba(245,247,250,0.92));backdrop-filter:blur(14px) saturate(1.5);-webkit-backdrop-filter:blur(14px) saturate(1.5);border-bottom:1px solid var(--border)}
[data-theme="dark"] .cat-subnav{background:rgba(10,22,40,0.92)}
.cat-subnav-inner{max-width:1280px;margin:0 auto;padding:0 40px;display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.cat-subnav-inner::-webkit-scrollbar{display:none}
.cat-subnav-link{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:14px 18px;font-size:0.82rem;font-weight:600;color:var(--text-light);border-bottom:2px solid transparent;transition:color .18s,border-color .18s;text-decoration:none}
.cat-subnav-link:hover{color:var(--blue)}
.cat-subnav-link.active{color:var(--blue);border-bottom-color:var(--blue)}
.csl-num{font-family:'JetBrains Mono',ui-monospace,'SF Mono',Consolas,'Microsoft YaHei',monospace;font-size:0.7rem;font-weight:700;color:var(--blue);opacity:.55}
.cat-subnav-link:hover .csl-num,.cat-subnav-link.active .csl-num{opacity:1}
.category-divider{scroll-margin-top:118px}
html{scroll-behavior:smooth}
@media(max-width:768px){.cat-subnav-inner{padding:0 14px}.cat-subnav-link{padding:12px 11px;font-size:0.74rem;gap:6px}}