/* ════════════════════════════════════════
   NAV
════════════════════════════════════════ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 4rem;
  background: rgba(8, 15, 58, 0.92);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.4s;
}
.nav-brand {
  display: flex; align-items: center; gap: 12px;
}
.nav-logo {
  width: 40px; height: 40px;
}
.nav-name {
  display: flex; flex-direction: column; line-height: 1;
}
.nav-abbr {
  font-family: var(--f-head); font-size: 22px; font-weight: 800;
  color: var(--white); letter-spacing: 0.1em;
}
.nav-full {
  font-size: 8.5px; font-weight: 500; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(255,255,255,0.45);
}
.nav-links {
  display: flex; gap: 2.25rem; list-style: none;
}
.nav-links a {
  font-size: 13px; font-weight: 500; letter-spacing: 0.02em;
  color: rgba(255,255,255,0.72); transition: color 0.2s;
  position: relative; padding-bottom: 2px;
}
.nav-links a::after {
  content: ''; position: absolute;
  bottom: 0; left: 0; width: 0; height: 1.5px;
  background: var(--red); transition: width 0.25s var(--ease);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: var(--red); color: var(--white);
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 10px 26px; border-radius: 4px;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover { background: var(--red-light); transform: translateY(-1px); }