.header { position: sticky; top: 0; z-index: 50; background: rgba(3, 4, 9, 0.9); backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-line); }
.header__in { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: var(--header-h); }

.logo { display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; text-transform: uppercase; letter-spacing: 0.02em; }
.logo .icon { width: 1.7rem; height: 1.7rem; color: var(--color-red); stroke-width: 1.6; }

.nav { display: none; gap: 2rem; font-weight: 600; font-size: 0.95rem; color: var(--color-muted); }
.nav a { transition: color 0.2s var(--ease); }
.nav a:hover { color: var(--color-cream); }
@media (min-width: 860px) { .nav { display: flex; } }

.header .btn { padding: 0.55rem 1rem; font-size: 0.95rem; }