html {
  scroll-padding-top: calc(var(--header-height) + var(--header-top-offset) + 14px);
}

body.nav-open {
  overflow: hidden;
  padding-right: var(--scrollbar-compensation, 0px);
}

.site-header {
  position: fixed;
  top: var(--header-top-offset);
  left: 50%;
  transform: translateX(-50%);
  width: min(85.9375rem, calc(100% - (var(--page-inline-pad) * 2)));
  z-index: 20;
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: 0 18px 45px rgba(20, 20, 20, 0.08);
  opacity: 1;
  transition: transform 0.35s ease, opacity 0.25s ease, box-shadow 0.25s ease;
  will-change: transform;
  min-height: 4rem;
}

.site-header.is-hidden {
  transform: translate(-50%, calc(-100% - 20px));
  opacity: 0;
  pointer-events: none;
}

.site-header-inner {
  width: 100%;
  margin: 0;
  padding: 0 22px;
  min-height: 4rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  position: relative;
}

.site-header a,
.site-header a:visited {
  color: inherit;
  text-decoration: none;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: var(--fw-medium);
  font-size: var(--fs-lg);
  line-height: 1;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.logo-img {
  width: 1.75rem;
  height: 3rem;
  flex: 0 0 28px;
}

.logo-dot {
  color: var(--interactive);
}

.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(0.3rem, 0.7vw, 0.55rem);
  min-width: 0;
}

.nav-links > a {
  width: auto;
  min-width: 0;
  height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  padding: 0 0.8rem;
  border-radius: var(--radius-xxl);
  font-weight: var(--fw-normal);
  line-height: 1;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid transparent;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.nav-links > a:hover,
.nav-links > a:focus-visible {
  color: var(--interactive);
  background: var(--bg-dark);
  border-color: rgba(var(--interactive-rgb), 0.45);
}

.nav-links > a.is-current,
.nav-links > a[aria-current="page"] {
  color: var(--interactive);
  background: var(--bg-dark);
  border-color: rgba(var(--interactive-rgb), 0.55);
  font-weight: var(--fw-medium);
}

.nav-links > a.is-current:hover,
.nav-links > a.is-current:focus-visible,
.nav-links > a[aria-current="page"]:hover,
.nav-links > a[aria-current="page"]:focus-visible {
  color: var(--interactive);
  background: var(--bg-dark);
  border-color: rgba(var(--interactive-rgb), 0.65);
}

.logo:focus-visible,
.nav-links > a:focus-visible,
.lang-pill:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid rgba(224, 164, 88, 0.75);
  outline-offset: 2px;
}

.nav-links > a:active {
  transform: translateY(1px) scale(0.97);
  box-shadow: 0 2px 8px rgba(36, 37, 42, 0.2) inset;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-xxl);
  border: 1px solid rgba(var(--text-primary-rgb), 0.08);
  background: rgba(var(--text-primary-rgb), 0.08);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.55);
}

.lang-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-width: 3rem;
  height: 1.625rem;
  padding: 0 0.65rem;
  border-radius: var(--radius-xxl);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-normal);
  line-height: 1.1;
  vertical-align: middle;
  color: rgba(var(--text-primary-rgb), 0.62);
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.lang-pill:hover,
.lang-pill:focus-visible:not(.is-active) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.52);
}

.lang-pill.is-active {
  background: var(--interactive);
  color: var(--text-primary);
  border-color: rgba(var(--text-primary-rgb), 0.08);
  box-shadow: 0 1px 4px rgba(var(--text-primary-rgb), 0.18);
}

.lang-pill.is-active:hover,
.lang-pill.is-active:focus-visible {
  background: var(--text-on-dark);
  color: var(--interactive);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(var(--interactive-rgb), 0.4);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-primary);
  border-radius: var(--radius-xxl);
  padding: 0.4rem 0.9rem;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
}

.nav-toggle-box {
  position: relative;
  display: inline-flex;
  width: 1.35rem;
  height: 1rem;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bar,
.nav-toggle-box::before,
.nav-toggle-box::after {
  position: absolute;
  left: 0;
  width: 100%;
  height: 0.125rem;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle-box::before,
.nav-toggle-box::after {
  content: "";
}

.nav-toggle-bar {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle-box::before {
  top: 0;
}

.nav-toggle-box::after {
  bottom: 0;
}

.nav-toggle.is-active .nav-toggle-bar {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-box::before {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-box::after {
  bottom: auto;
  top: 50%;
  transform: translateY(-50%) rotate(-45deg);
}

.nav-toggle-label {
  letter-spacing: 0.2em;
  font-size: var(--fs-xs);
}

@media (max-width: 1100px) {
  :root {
    --header-top-offset: 0;
  }

  .site-header-inner {
    min-height: 4rem;
    padding: 0 14px;
    gap: 0.6rem;
  }

  .logo {
    font-size: var(--fs-md);
    gap: 0.35rem;
  }

  .logo-img {
    width: 1.25rem;
    height: 2.125rem;
    flex: 0 0 20px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    right: 1.2rem;
    background: var(--bg-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    z-index: 30;
    max-width: min(22.5rem, calc(100vw - (var(--page-inline-pad) * 2)));
  }

  .nav-links.is-open {
    display: flex;
    border: 1px solid rgba(var(--text-primary-rgb), 0.08);
    background: var(--bg-surface);
    box-shadow: 0 18px 45px rgba(20, 20, 20, 0.08);
  }

  .nav-links > a,
  .nav-links > a:visited {
    color: var(--text-primary);
    background: var(--bg-surface);
    border-color: transparent;
  }

  .nav-links.is-open > a.is-current,
  .nav-links.is-open > a[aria-current="page"] {
    color: var(--interactive);
    background: var(--bg-dark);
    border-color: rgba(var(--interactive-rgb), 0.55);
    font-weight: var(--fw-medium);
  }

  .nav-links.is-open > a.is-current:hover,
  .nav-links.is-open > a.is-current:focus-visible,
  .nav-links.is-open > a[aria-current="page"]:hover,
  .nav-links.is-open > a[aria-current="page"]:focus-visible {
    color: var(--interactive);
    background: var(--bg-dark);
    border-color: rgba(var(--interactive-rgb), 0.65);
  }

  .lang-switch {
    width: 100%;
    justify-content: center;
    margin-top: 0.25rem;
    box-shadow: none;
  }

  .lang-pill {
    flex: 1 1 0;
    min-width: 0;
    text-align: center;
  }

  .site-header {
    top: 0;
    left: 0;
    width: 100%;
    min-height: 4rem;
    border-radius: 0;
    box-shadow: 0 8px 22px rgba(20, 20, 20, 0.06);
    transform: translateY(0);
  }
  .site-header.is-hidden {
    transform: translateY(calc(-100% - 0.5rem));
  }
}

@media (max-width: 700px) {
  .site-header-inner {
    padding: 0 clamp(0.9rem, 5vw, 1.05rem);
  }

  .nav-links {
    right: 0.75rem;
    left: 0.75rem;
  }
}