.site-header{top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);-webkit-backdrop-filter:saturate(1.4)blur(12px);backdrop-filter:saturate(1.4)blur(12px);border-bottom:1px solid #0000;transition:border-color .2s,box-shadow .2s;position:sticky}.site-header.scrolled{border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}.header-inner{height:var(--header-h);align-items:center;gap:22px;display:flex}.nav-desktop{align-items:center;gap:4px;margin-left:8px;display:flex}.nav-link{border-radius:var(--r-sm);color:var(--text-secondary);padding:9px 13px;font-size:.95rem;font-weight:600}.nav-link:hover{color:var(--text);background:var(--surface-2);text-decoration:none}.nav-link.active{color:var(--text);background:var(--surface-2)}.header-right{align-items:center;gap:10px;margin-left:auto;display:flex}.chip-usd{color:var(--text-secondary);border:1px solid var(--border);background:var(--surface);border-radius:999px;align-items:center;gap:6px;padding:7px 11px;font-size:.85rem;font-weight:700;display:inline-flex}.icon-btn{border-radius:var(--r-sm);border:1px solid var(--border);background:var(--surface);width:40px;height:40px;color:var(--text);justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover{background:var(--surface-2)}.hamburger{display:none}@media (max-width:900px){.nav-desktop,.header-right .chip-usd,.header-right .signin-desktop{display:none}.hamburger{display:inline-flex}}.scrim{z-index:60;opacity:0;pointer-events:none;background:#080e1880;transition:opacity .22s;position:fixed;inset:0}.scrim.open{opacity:1;pointer-events:auto}.mobile-nav{background:var(--surface);z-index:70;width:min(320px,86vw);padding:calc(env(safe-area-inset-top,0px) + 16px) 18px 18px;box-shadow:var(--shadow-lg);flex-direction:column;transition:transform .26s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;top:0;bottom:0;right:0;transform:translate(100%)}.mobile-nav.open{transform:translate(0)}.mobile-nav .mn-head{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.mobile-nav a.mn-link{border-radius:var(--r-md);color:var(--text);align-items:center;gap:12px;padding:14px 12px;font-size:1.05rem;font-weight:600;display:flex}.mobile-nav a.mn-link:hover{background:var(--surface-2);text-decoration:none}.mobile-nav .mn-sep{background:var(--border);height:1px;margin:10px 0}