.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0.85rem var(--container-padding);
}

.site-branding { flex-shrink: 0; }

.custom-logo-link img {
  max-height: 42px;
  width: auto;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 650;
  margin: 0;
  letter-spacing: -0.03em;
}

.site-title a {
  color: var(--color-ink);
}

.site-title a:hover { color: var(--color-clay); }

.main-navigation {
  margin-left: auto;
}

.nav-menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.35rem;
}

.nav-menu a {
  color: var(--color-ink);
  font-weight: 550;
  font-size: 0.95rem;
}

.nav-menu a:hover,
.nav-menu .current-menu-item > a {
  color: var(--color-clay);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 20px;
  background: var(--color-ink);
}

.main-navigation.toggled .nav-menu {
  display: flex;
  flex-direction: column;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  padding: 1rem 1.25rem 1.25rem;
  z-index: var(--z-dropdown);
}

.header-search { display: none; }

.search-form {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: var(--color-surface);
  overflow: hidden;
}

.search-field {
  border: 0;
  background: transparent;
  padding: 0.55rem 0.9rem;
  min-width: 12rem;
  font: inherit;
  color: var(--color-ink);
}

.search-field:focus { outline: none; }

.search-submit {
  border: 0;
  background: transparent;
  color: var(--color-ink);
  width: 44px;
  height: 44px;
  cursor: pointer;
}

@media (min-width: 900px) {
  .menu-toggle { display: none; }
  .nav-menu { display: flex; }
  .header-search { display: block; }
}