.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(251,251,253,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.06)}.nav-inner{max-width:1080px;margin:0 auto;padding:0 22px;height:50px;justify-content:space-between}.nav-brand,.nav-inner{display:flex;align-items:center}.nav-brand{gap:9px;font-weight:600;font-size:17px;letter-spacing:-.01em;color:#1d1d1f}.nav-brand-mark{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff;font-weight:700;font-size:15px}.nav-links{display:flex;align-items:center;gap:2px}.nav-links a{padding:6px 12px;border-radius:7px;font-size:13px;color:rgba(29,29,31,.78);font-weight:400;transition:color .15s ease,background .15s ease}.nav-links a:hover{color:#1d1d1f}.nav-links a.active{color:#1d1d1f;font-weight:500}.nav-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--text)}@media (max-width:768px){.nav-toggle{display:block}.nav-links{position:absolute;top:50px;inset-inline:0;flex-direction:column;align-items:stretch;background:var(--surface);border-bottom:1px solid var(--border);padding:12px;gap:4px;display:none}.nav-links.open{display:flex}}