.site-header {
  position: relative;
  z-index: 100;
  width: 100%;
  border-bottom: var(--border-subtle);
  background: var(--surface-page);
}

.site-header__inner {
  display: flex;
  width: min(calc(100% - 3rem), var(--container-wide-max));
  min-height: 5.5rem;
  margin-inline: auto;
  align-items: center;
  gap: var(--space-4);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-slate);
  text-decoration: none;
}

.site-header__brand:hover { color: var(--color-slate); }

.site-header__mark {
  width: 3rem;
  height: 3rem;
  flex: 0 0 3rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.18rem;
}

.site-header__brand-name,
.site-header__brand-subline {
  display: block;
  white-space: nowrap;
}

.site-header__brand-name {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.1;
}

.site-header__brand-subline {
  color: var(--color-slate-muted);
  font-size: 0.5625rem;
  font-weight: 650;
  letter-spacing: 0.115em;
  line-height: 1.2;
}

.site-header__nav {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li {
  margin: 0;
  padding: 0;
}

.site-header__nav-list--desktop {
  align-items: center;
  justify-content: flex-end;
  gap: 0.3rem;
}

.site-header__nav-list--desktop a {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  padding: 0.5rem 0.58rem;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  color: var(--color-slate);
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.07em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
}

.site-header__nav-list--desktop li:nth-child(2n) a { transform: translateY(0.1rem); }
.site-header__nav-list--desktop li:nth-child(3n) a { background: rgba(216, 196, 166, 0.28); }
.site-header__nav-list--desktop a:hover { border-color: var(--color-line); background: var(--surface-raised); color: var(--color-aquamarine-deep); transform: translateY(-0.12rem); }

.site-header__nav-list--mobile,
.site-header__nav-cta,
.site-header__toggle { display: none; }

.site-header__desktop-cta {
  width: auto;
  flex: 0 0 auto;
  white-space: nowrap;
}

@media (max-width: 76rem) {
  .site-header__inner { width: min(calc(100% - 2.5rem), var(--container-wide-max)); }
  .site-header__nav-list--desktop a { padding-inline: 0.4rem; font-size: 0.625rem; }
}

@media (max-width: 68.6875rem) {
  .site-header__inner { min-height: 4.75rem; }
  .site-header__mark { width: 2.625rem; height: 2.625rem; flex-basis: 2.625rem; }
  .site-header__brand-name { font-size: 0.8125rem; }
  .site-header__brand-subline { font-size: 0.5rem; }
  .site-header__nav { gap: var(--space-2); }
  .site-header__nav-list--desktop a { padding-inline: 0.3rem; font-size: 0.5625rem; }
  .site-header__desktop-cta { padding-inline: 0.75rem; font-size: 0.8125rem; }
}

@media (max-width: 61.9375rem) {
  .site-header__inner { position: relative; justify-content: space-between; }
  .site-header__toggle {
    display: inline-flex;
    width: 2.75rem;
    min-width: 2.75rem;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.28rem;
    padding: 0;
    border: var(--border-subtle);
    border-radius: var(--radius-xs);
    background: var(--surface-raised);
  }
  .site-header__toggle-line { display: block; width: 1.2rem; height: 1.5px; background: var(--color-slate); transition: transform var(--transition-fast), opacity var(--transition-fast); }
  .site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) { transform: translateY(0.39rem) rotate(45deg); }
  .site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) { opacity: 0; }
  .site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) { transform: translateY(-0.39rem) rotate(-45deg); }
  .site-header__desktop-cta { display: none; }
  .site-header__nav {
    position: absolute;
    z-index: 110;
    top: calc(100% + 0.5rem);
    right: 0;
    display: none;
    width: min(42rem, 100%);
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    padding: var(--space-4);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    background: var(--surface-glass);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }
  .site-header__nav.is-open { display: grid; gap: var(--space-4); }
  .site-header__nav-list--desktop { display: none; }
  .site-header__nav-list--mobile { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); }
  .site-header__nav-list--mobile a {
    display: flex;
    min-height: 2.75rem;
    align-items: center;
    padding: 0.625rem 0.75rem;
    border: var(--border-subtle);
    border-radius: var(--radius-xs);
    background: var(--surface-raised);
    color: var(--color-slate);
    font-size: 0.6875rem;
    font-weight: 650;
    letter-spacing: 0.08em;
    line-height: 1.15;
    text-decoration: none;
    text-transform: uppercase;
  }
  .site-header__nav-list--mobile li:nth-child(3n) a { background: rgba(216, 196, 166, 0.38); }
  .site-header__nav-list--mobile a:hover { border-color: var(--color-aquamarine); color: var(--color-aquamarine-deep); }
  .site-header__nav-cta { display: inline-flex; width: 100%; }
}

@media (max-width: 44.9375rem) {
  .site-header__inner { width: min(calc(100% - 2.5rem), var(--container-wide-max)); min-height: 4.5rem; gap: var(--space-2); }
  .site-header__mark { width: 2.25rem; height: 2.25rem; flex-basis: 2.25rem; }
  .site-header__brand { gap: var(--space-2); }
  .site-header__brand-name { font-size: 0.75rem; }
  .site-header__brand-subline { display: none; }
  .site-header__nav { right: 0; left: 0; width: 100%; }
}

@media (max-width: 23rem) {
  .site-header__brand-name { font-size: 0.6875rem; letter-spacing: 0.05em; }
  .site-header__nav-list--mobile { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__nav-list--desktop li:nth-child(2n) a { transform: none; }
}