.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background .35s, box-shadow .35s, backdrop-filter .35s;
}
.nav.up {
  background: rgba(238,243,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--bd), 0 2px 12px rgba(37,99,235,.06);
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: -.3px;
  color: var(--ink);
  flex-shrink: 0;
}
.nav-logo b { color: var(--blue); }
.nav-logo-img {
  width: 48px; height: 48px;
  object-fit: contain;
  image-rendering: pixelated;
}
.nav-links {
  display: flex;
  gap: 0;
  margin-left: auto;
}
.nav-links a {
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink2);
  transition: color var(--t), background var(--t);
}
.nav-links a:hover { color: var(--blue); background: rgba(37,99,235,.06); }
.nav-active { color: var(--blue) !important; }
.nav-actions { display: flex; gap: 10px; flex-shrink: 0; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.burger span {
  display: block;
  width: 22px; height: 2.5px;
  background: var(--ink);
  transition: transform var(--t), opacity var(--t);
}
.burger.on span:first-child { transform: translateY(7.5px) rotate(45deg); }
.burger.on span:last-child { transform: translateY(-7.5px) rotate(-45deg); }

.mob-menu {
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  z-index: 900;
  background: rgba(238,243,255,.97);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bd);
  padding: 20px 28px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transform: translateY(-110%);
  opacity: 0;
  pointer-events: none;
  transition: transform .35s, opacity .35s;
}
.mob-menu.on { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mob-menu a {
  padding: 13px 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink2);
  border-bottom: 1px solid var(--bd);
  transition: color var(--t);
}
.mob-menu a:hover { color: var(--blue); }