.sph{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--lp-hairline)}.sph-inner{justify-content:space-between;gap:16px;max-width:1320px;height:60px;margin-inline:auto;padding-inline:24px}.sph-inner,.sph-left{display:flex;align-items:center}.sph-left{gap:14px}.sph-brand img{display:block;height:24px;width:auto}.sph-divider{width:1px;height:18px;background:var(--lp-hairline-strong)}.sph-label{font-size:14px;font-weight:600;color:var(--lp-ink)}.sph-right{display:flex;align-items:center;gap:10px}.sph-link{font-size:14px;font-weight:500;color:var(--lp-charcoal);text-decoration:none;padding:6px 10px;border-radius:9999px;transition:color .15s ease,background .15s ease}.sph-link:hover{color:var(--lp-ink);background:rgba(0,0,0,.04)}.sph-lang{display:flex;gap:2px;padding:3px;border:1px solid var(--lp-hairline);border-radius:9999px;background:var(--lp-surface-soft)}.sph-lang a{padding:3px 10px;border-radius:9999px;font-size:12px;font-weight:500;color:var(--lp-charcoal);text-decoration:none}.sph-lang a.active{background:var(--lp-canvas);color:var(--lp-ink);border:1px solid var(--lp-hairline)}.sph-github{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:9999px;color:var(--lp-charcoal);transition:color .15s ease,background .15s ease}.sph-github:hover{color:var(--lp-ink);background:rgba(0,0,0,.04)}@media (max-width:640px){.sph-github,.sph-link{display:none}}