.sy-site-header {
  position: fixed;
  z-index: 9990;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  background: rgba(7, 17, 31, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: border-color var(--sy-transition), background var(--sy-transition), box-shadow var(--sy-transition);
}

.sy-site-header.is-scrolled {
  border-color: var(--sy-border);
  background: rgba(7, 17, 31, 0.95);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
}

.sy-header-inner {
  display: flex;
  min-height: 86px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.sy-brand {
  position: relative;
  z-index: 2;
  flex: 0 0 auto;
}

.sy-brand .custom-logo-link {
  display: inline-flex;
  align-items: center;
}

.sy-brand .custom-logo {
  width: auto;
  max-width: 210px;
  max-height: 58px;
}

.sy-brand-text {
  display: flex;
  flex-direction: column;
  color: #ffffff;
  line-height: 1.1;
}

.sy-brand-text strong {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.sy-brand-text span {
  margin-top: 6px;
  color: var(--sy-muted);
  font-size: 11px;
  font-weight: 500;
}

.sy-primary-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.sy-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sy-menu li {
  position: relative;
}

.sy-menu a {
  position: relative;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 600;
  transition: color var(--sy-transition);
}

.sy-menu > li > a::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: center;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--sy-primary), var(--sy-accent));
  content: "";
  transition: transform var(--sy-transition);
}

.sy-menu a:hover,
.sy-menu .current-menu-item > a,
.sy-menu .current-menu-ancestor > a {
  color: #ffffff;
}

.sy-menu > li > a:hover::after,
.sy-menu > .current-menu-item > a::after,
.sy-menu > .current-menu-ancestor > a::after {
  transform: scaleX(1);
}

.sy-menu .sub-menu {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  min-width: 220px;
  margin: 0;
  padding: 12px;
  transform: translate(-50%, 10px);
  border: 1px solid var(--sy-border);
  border-radius: 16px;
  background: rgba(13, 27, 42, 0.98);
  box-shadow: var(--sy-shadow);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--sy-transition), transform var(--sy-transition), visibility var(--sy-transition);
}

.sy-menu li:hover > .sub-menu,
.sy-menu li:focus-within > .sub-menu {
  transform: translate(-50%, 0);
  opacity: 1;
  visibility: visible;
}

.sy-menu .sub-menu a {
  width: 100%;
  min-height: 42px;
  padding: 8px 12px;
  border-radius: 10px;
}

.sy-menu .sub-menu a:hover {
  background: rgba(255, 255, 255, 0.06);
}

.sy-header-cta {
  min-height: 46px;
  padding-inline: 20px;
  border-radius: 12px;
  font-size: 14px;
}

.sy-menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 10px;
  border: 1px solid var(--sy-border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
}

.sy-menu-toggle > span:not(.screen-reader-text) {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: #ffffff;
  transition: transform var(--sy-transition), opacity var(--sy-transition);
}

.sy-menu-toggle[aria-expanded="true"] > span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.sy-menu-toggle[aria-expanded="true"] > span:nth-child(2) {
  opacity: 0;
}

.sy-menu-toggle[aria-expanded="true"] > span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}