/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(247, 244, 238, 0.62);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  transition: box-shadow 0.4s var(--ease), background-color 0.4s var(--ease);
}
.site-header.is-stuck {
  background: rgba(247, 244, 238, 0.72);
  box-shadow: 0 1px 0 var(--line), 0 14px 34px -28px rgba(36, 28, 24, 0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
}
.logo {
  font-family: var(--serif);
  font-size: clamp(21px, 2.1vw, 26px);
  letter-spacing: 0.01em;
  color: var(--accent-deep);
  white-space: nowrap;
}
.logo span { color: var(--ink); }

.nav { display: flex; align-items: center; }
.nav > ul { display: flex; gap: clamp(20px, 3vw, 40px); }
.nav a {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
  padding-block: 6px;
  transition: color 0.3s var(--ease);
}
.nav > ul a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent-deep);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav > ul a:hover { color: var(--ink); }
.nav > ul a:hover::after { transform: scaleX(1); }
.nav-cta { display: none; }

.header-cta {
  padding: 8px 18px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.menu-toggle { display: none; width: 44px; height: 44px; position: relative; }
.menu-toggle span {
  position: absolute;
  left: 11px;
  width: 22px;
  height: 1.4px;
  background: var(--ink);
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease);
}
.menu-toggle span:nth-child(1) { top: 16px; }
.menu-toggle span:nth-child(2) { top: 21.5px; }
.menu-toggle span:nth-child(3) { top: 27px; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }