.site-header {
  height: 104px;
  padding: 0 4vw;
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 34px;
  color: #fff;
  background: rgba(6, 24, 32, .94);
  border-bottom: 1px solid rgba(255, 255, 255, .13);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, .12);
}

.brand {
  display: flex;
  align-items: center;
  gap: 17px;
  white-space: nowrap;
}

.brand-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: 1px solid #55cce2;
  transform: rotate(45deg);
}

.brand-icon::before {
  content: "D";
  color: #55cce2;
  font: 700 30px Georgia, serif;
  transform: rotate(-45deg);
}

.brand-icon i { display: none; }
.brand b { display: block; font-size: 23px; letter-spacing: 3px; }
.brand small { display: block; margin-top: 4px; color: #55cce2; font-size: 8px; letter-spacing: 1.8px; text-transform: uppercase; }

.main-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

.main-nav > a,
.nav-products-link {
  padding: 43px 0;
  position: relative;
  color: inherit;
  font: 600 12px Manrope, Arial, sans-serif;
}

.main-nav > a::after {
  content: "";
  height: 1px;
  position: absolute;
  right: 0;
  bottom: 31px;
  left: 0;
  background: #f4b64f;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}

.main-nav > a:hover::after,
.main-nav > a:focus-visible::after { transform: scaleX(1); }

.nav-products-link {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 0;
  background: none;
  cursor: default;
}

.nav-products-link,
.nav-products-link.active { color: #55cce2; }
.nav-products-link span { font-size: 14px; transition: transform .2s ease; }

.nav-dropdown {
  position: relative;
  display: flex;
  align-self: stretch;
  align-items: center;
}

.nav-submenu {
  width: 285px;
  padding: 9px;
  position: absolute;
  top: calc(100% - 8px);
  left: 50%;
  background: rgba(6, 24, 32, .99);
  border: 1px solid rgba(85, 204, 226, .22);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .28);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 10px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
}

.nav-dropdown:hover .nav-submenu,
.nav-dropdown:focus-within .nav-submenu,
.nav-dropdown.submenu-open .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-submenu a {
  display: block;
  padding: 13px 14px;
  color: #dcebee;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.35;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.nav-submenu a:last-child { border-bottom: 0; }
.nav-submenu a:hover, .nav-submenu a:focus-visible { color: #071d27; background: #55cce2; }

.header-phone {
  padding-left: 24px;
  font-size: 15px;
  font-weight: 700;
  border-left: 1px solid rgba(255, 255, 255, .15);
}

.header-phone small {
  display: block;
  color: #b9c5c0;
  font-size: 7px;
  text-transform: uppercase;
}

.menu-toggle { display: none; }

@media (max-width: 1180px) {
  .main-nav { gap: 13px; }
  .main-nav > a, .nav-products-link { font-size: 10px; }
  .header-phone { display: none; }
}

@media (max-width: 800px) {
  .site-header { height: 82px; padding: 0 21px; }
  .brand-icon { width: 44px; height: 44px; }
  .brand-icon::before { font-size: 24px; }
  .brand b { font-size: 19px; }
  .menu-toggle { margin-left: auto; display: flex; flex-direction: column; gap: 6px; padding: 8px; border: 0; background: none; }
  .menu-toggle span { width: 25px; height: 1px; background: #fff; }
  .main-nav { display: none; position: fixed; top: 82px; right: 0; left: 0; max-height: calc(100svh - 82px); padding: 20px; overflow-y: auto; flex-direction: column; align-items: stretch; background: #061820; }
  .main-nav.open { display: flex; }
  .main-nav > a, .nav-products-link { width: 100%; padding: 10px 8px; font-size: 13px; }
  .main-nav > a::after { display: none; }
  .nav-dropdown { display: block; align-self: auto; }
  .nav-products-link { justify-content: space-between; }
  .nav-dropdown.submenu-open .nav-products-link span { transform: rotate(180deg); }
  .nav-submenu { display: none; width: auto; margin: 2px 0 8px 8px; padding: 5px; position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; border-left: 1px solid rgba(85, 204, 226, .35); }
  .nav-dropdown.submenu-open .nav-submenu { display: block; }
  .nav-submenu a { padding: 10px 12px; }
}