header.top{ position:sticky; top:0; z-index:20; background:rgba(255,255,255,0.9); backdrop-filter:blur(8px); border-bottom:1px solid var(--line); }
.nav-row{ display:flex; align-items:center; justify-content:space-between; padding:16px 0; }
.brand{ display:flex; align-items:center; gap:10px; }
.brand img{ width:34px; height:34px; border-radius:9px; }
.brand .word{ font-weight:800; font-size:1.02rem; }
.nav-links{ display:flex; gap:28px; font-size:0.88rem; font-weight:600; }
.nav-links a{ text-decoration:none; color:var(--ink); opacity:0.75; transition:opacity var(--transition-fast); }
.nav-links a:hover{ opacity:1; }
@media (max-width:700px){ .nav-links{ display:none; } }