.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 1rem 0;
  transition: var(--transition);
}

.site-header__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  background: transparent;
  transition: var(--transition);
  pointer-events: none;
}

.site-header.is-scrolled {
  padding: 0;
}

.site-header.is-scrolled .site-header__bg {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(0, 67, 91, 0.08);
  box-shadow: 0 16px 40px rgba(17, 29, 35, 0.08);
}

.site-header__inner {
  position: relative;
  z-index: 2;
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0;
  transition: var(--transition);
}

.site-header:not(.is-scrolled) .site-header__inner {
  background: transparent;
  border: 0;
  box-shadow: none;
}

.site-header.is-scrolled .site-header__inner {
  min-height: 108px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo__image {
  height: 54px;
  width: auto;
  display: block;
  object-fit: contain;
  transition: var(--transition);
}

.site-header.is-scrolled .site-logo__image {
  height: 54px;
}

.site-logo__image--mobile {
  height: 42px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.site-nav a {
  position: relative;
  font-weight: 700;
  color: var(--color-white);
  transition: var(--transition);
}

.site-header.is-scrolled .site-nav a {
  color: var(--color-title);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.42rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--color-accent);
  transition: var(--transition);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  width: 100%;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.site-header .btn--primary {
  min-height: 58px;
  padding: 0 1.45rem;
}

.site-header:not(.is-scrolled) .btn--primary {
  background: linear-gradient(135deg, #00435b 0%, #0a5b78 100%);
  color: var(--color-white);
  border: 0;
  box-shadow: 0 14px 34px rgba(0, 67, 91, 0.18);
  backdrop-filter: none;
}

.site-header:not(.is-scrolled) .btn--primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.03);
}

.site-header.is-scrolled .btn--primary {
  background: linear-gradient(135deg, #00435b 0%, #0a5b78 100%);
  color: var(--color-white);
  border: 0;
}

.site-header .btn--primary i {
  font-size: 1rem;
}

.mobile-toggle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 0 12px;
  backdrop-filter: blur(10px);
}

.site-header.is-scrolled .mobile-toggle {
  background: rgba(0, 67, 91, 0.08);
}

.mobile-toggle span {
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 999px;
}

.site-header.is-scrolled .mobile-toggle span {
  background: var(--color-primary);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 110;
  visibility: hidden;
  opacity: 0;
  transition: var(--transition);
}

.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
}

.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background: rgba(25, 31, 35, 0.35);
  backdrop-filter: blur(8px);
}

.mobile-menu__panel {
  position: relative;
  margin-left: auto;
  width: min(100%, 360px);
  height: 100%;
  background: var(--color-white);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  transform: translateX(100%);
  transition: var(--transition);
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.08);
}

.mobile-menu.is-open .mobile-menu__panel {
  transform: translateX(0);
}

.mobile-menu__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu__close {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 67, 91, 0.08);
  color: var(--color-primary);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-menu__nav a {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-title);
}