:root {
  --menu-topbar-z: 50;
  --menu-topbar-bg: rgba(255, 255, 255, 0.86);
  --menu-inner-gap: 16px;
  --menu-min-height: 68px;
  --menu-brand-color: currentColor;
  --menu-brand-size: 1.5rem;
  --menu-brand-letter-spacing: 0.06em;
  --menu-sub-color: var(--ink-soft, currentColor);
  --menu-page-gap: 10px;
  --menu-page-bg: rgba(255, 255, 255, 0.72);
  --menu-page-color: var(--ink-soft, currentColor);
  --menu-page-hover-color: var(--menu-active-color, currentColor);
  --menu-page-current-bg: var(--menu-active-color, currentColor);
  --menu-page-current-color: #ffffff;
  --menu-page-current-shadow: var(--shadow-soft, none);
  --menu-nav-gap: clamp(10px, 1.8vw, 18px);
  --menu-nav-color: var(--ink-soft, currentColor);
  --menu-nav-active-color: var(--menu-active-color, currentColor);
  --menu-nav-indicator: var(--menu-active-color, currentColor);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: var(--menu-topbar-z);
  border-bottom: 1px solid var(--line);
  background: var(--menu-topbar-bg);
  backdrop-filter: blur(16px);
}

.topbar__inner {
  display: flex;
  gap: var(--menu-inner-gap);
  align-items: center;
  justify-content: space-between;
  min-height: var(--menu-min-height);
}

.topbar__navs {
  display: grid;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
  justify-items: end;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.brand__logo {
  width: 72px;
  height: 44px;
  display: block;
  object-fit: contain;
  background: transparent;
  flex: 0 0 auto;
}

.brand__text {
  display: inline-flex;
  gap: 10px;
  align-items: baseline;
  white-space: nowrap;
}

.brand__mark {
  color: var(--menu-brand-color);
  font-family: var(--font-serif);
  font-size: var(--menu-brand-size);
  font-weight: 700;
  letter-spacing: var(--menu-brand-letter-spacing);
  text-transform: uppercase;
}

.brand__sub {
  color: var(--menu-sub-color);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-links,
.nav-links {
  display: flex;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-links::-webkit-scrollbar,
.nav-links::-webkit-scrollbar {
  display: none;
}

.page-links {
  gap: var(--menu-page-gap);
  max-width: 100%;
}

.page-links a,
.nav-links a {
  white-space: nowrap;
}

.page-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--menu-page-bg);
  color: var(--menu-page-color);
  font-size: 0.71rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.page-links a:hover,
.page-links a:focus-visible {
  border-color: var(--line-strong);
  color: var(--menu-page-hover-color);
  outline: none;
}

.page-links a.is-current {
  border-color: transparent;
  background: var(--menu-page-current-bg);
  color: var(--menu-page-current-color);
  box-shadow: var(--menu-page-current-shadow);
}

.nav-links {
  gap: var(--menu-nav-gap);
}

.nav-links a {
  position: relative;
  padding: 6px 0;
  color: var(--menu-nav-color);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--menu-nav-indicator);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.is-current {
  color: var(--menu-nav-active-color);
  outline: none;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a.is-current::after {
  transform: scaleX(1);
}

@media (max-width: 860px) {
  .topbar__inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 12px 0;
  }

  .topbar__navs {
    width: 100%;
    justify-items: stretch;
  }

  .brand {
    flex-wrap: wrap;
  }

  .page-links,
  .nav-links {
    width: 100%;
    max-width: 100%;
  }
}