.header { position: sticky; top: 0; z-index: 1000; background: #ffffff; border-bottom: 1px solid #E8E6E1; transition: box-shadow 0.3s; }
.header.scrolled { box-shadow: 0 2px 16px rgba(27, 42, 74, 0.08); }
.header .header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.header .header-logo { display: flex; align-items: center; }
.header .header-logo-img { height: 32px; width: auto; }
.header .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: #ffffff; border-top: 1px solid #E8E6E1; border-bottom: 1px solid #E8E6E1; padding: 8px 0; }
.header .nav.active { display: block; }
.header .nav-list { display: flex; flex-direction: column; }
.header .nav-item { border-bottom: 1px solid rgba(232, 230, 225, 0.5); }
.header .nav-item:last-child { border-bottom: none; }
.header .nav-link { display: flex; align-items: center; justify-content: space-between; padding: 12px 24px; font-size: 14px; font-weight: 500; color: #2D3436; letter-spacing: 0.3px; transition: color 0.2s; }
.header .nav-link:hover { color: #C9A84C; }
.header .nav-chevron { width: 14px; height: 14px; transition: transform 0.3s; fill: #8a8a8a; }
.header .nav-dropdown.open .nav-chevron { transform: rotate(180deg); }
.header .dropdown-menu { display: none; background: #F8F7F4; }
.header .nav-dropdown.open .dropdown-menu { display: block; }
.header .dropdown-link { display: block; padding: 10px 40px; font-size: 13px; color: #4a5568; transition: color 0.2s; }
.header .dropdown-link:hover { color: #C9A84C; }
.header .hamburger { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 28px; height: 28px; cursor: pointer; }
.header .hamburger-line { display: block; width: 100%; height: 1.5px; background: #1B2A4A; border-radius: 1px; transition: transform 0.3s, opacity 0.3s; }
.header .hamburger.active .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header .hamburger.active .hamburger-line:nth-child(2) { opacity: 0; }
.header .hamburger.active .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (min-width: 1024px) {
  .header .nav { display: flex; position: static; background: transparent; border: none; padding: 0; }
  .header .nav-list { flex-direction: row; align-items: center; gap: 0; }
  .header .nav-item { border-bottom: none; }
  .header .nav-link { padding: 8px 16px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.8px; }
  .header .hamburger { display: none; }
  .header .nav-dropdown { position: relative; }
  .header .dropdown-menu { position: absolute; top: 100%; left: 0; min-width: 200px; background: #ffffff; border: 1px solid #E8E6E1; border-radius: 6px; box-shadow: 0 8px 24px rgba(27, 42, 74, 0.1); padding: 8px 0; }
  .header .dropdown-link { padding: 10px 20px; }
}