.nav > a,
.nav-guide > summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  padding: 7px 9px;
  color: inherit;
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
}

.nav-copy {
  display: grid;
  justify-items: center;
  gap: 2px;
}

.nav-ja,
.nav-en {
  display: block;
}

.nav-en {
  color: currentColor;
  font-size: 0.62rem;
  font-weight: 600;
  opacity: 0.7;
}

.nav > a:hover,
.nav > a:focus-visible,
.nav > a[aria-current="page"],
.nav-guide > summary:hover,
.nav-guide > summary:focus-visible,
.nav-guide > summary[aria-current="true"],
.nav-guide[open] > summary {
  background: rgba(255, 210, 28, 0.12);
  color: var(--f60-gold, var(--gold, #ffd21c));
  outline: none;
}

.nav > a:focus-visible,
.nav-guide > summary:focus-visible,
.nav-guide__menu a:focus-visible {
  outline: 3px solid rgba(255, 210, 28, 0.32);
  outline-offset: 2px;
}

.nav-register {
  border: 1px solid rgba(255, 210, 28, 0.58);
  background: rgba(255, 210, 28, 0.1);
}

.nav-guide {
  position: relative;
}

.nav-guide > summary {
  gap: 7px;
  cursor: pointer;
  list-style: none;
}

.nav-guide > summary::-webkit-details-marker {
  display: none;
}

.nav-guide__chevron {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 160ms ease;
}

.nav-guide[open] .nav-guide__chevron {
  transform: translateY(2px) rotate(225deg);
}

.nav-guide__menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 60;
  min-width: 210px;
  display: grid;
  gap: 3px;
  border: 1px solid rgba(255, 210, 28, 0.28);
  border-radius: 4px;
  padding: 7px;
  background: rgba(8, 8, 6, 0.98);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.42);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-5px);
  visibility: hidden;
  transition: opacity 140ms ease, transform 140ms ease, visibility 140ms ease;
}

.nav-guide:hover > .nav-guide__menu,
.nav-guide[open] > .nav-guide__menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  visibility: visible;
}

.nav-guide__menu a {
  min-height: 42px;
  display: flex;
  align-items: center;
  border-radius: 3px;
  padding: 8px 11px;
  color: #e6d7ab;
  font-size: 0.78rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.nav-guide__menu a:hover,
.nav-guide__menu a[aria-current="page"] {
  background: rgba(255, 210, 28, 0.12);
  color: var(--f60-gold, var(--gold, #ffd21c));
}

.subpage-footer__main-link {
  flex-basis: 100%;
  color: var(--f60-gold, var(--gold, #ffd21c));
  font-weight: 800;
  text-underline-offset: 4px;
}

@media (max-width: 900px) {
  .header .header__inner {
    min-height: 64px;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .header .brand {
    flex: 1 1 auto;
    width: auto;
  }

  .header .menu-toggle {
    display: inline-flex;
    position: relative;
    top: auto;
    right: auto;
    z-index: 1002;
    width: 44px;
    height: 44px;
    margin-left: auto;
    flex: 0 0 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    border: 1px solid rgba(255, 210, 28, 0.38);
    border-radius: 50%;
    background: rgba(20, 18, 14, 0.96);
    color: var(--f60-gold, var(--gold, #ffd21c));
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  }

  .header .menu-toggle-line {
    display: block;
    width: 19px;
    height: 2px;
    margin: 0;
    border-radius: 999px;
    background: currentColor;
    transition: transform 0.22s ease, opacity 0.22s ease;
  }

  .header:not(.has-menu-toggle) .nav {
    display: block;
  }

  .header.has-menu-toggle .nav {
    display: none;
  }

  .header.has-menu-toggle.is-open .nav {
    display: block;
    transform: translateX(-50%);
  }

  .header .nav {
    top: 70px;
    right: auto;
    left: 50%;
    width: min(330px, calc(100vw - 24px));
    max-height: calc(100dvh - 82px);
    padding: 8px;
    border: 1px solid rgba(255, 210, 28, 0.32);
    border-radius: 8px;
    background: #090806;
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.72);
    overflow-y: auto;
    transform: translateX(-50%);
  }

  .nav > a,
  .nav-guide > summary {
    width: 100%;
    min-height: 48px;
    justify-content: flex-start;
    border: 0;
    border-bottom: 1px solid rgba(255, 210, 28, 0.13);
    border-radius: 0;
    padding: 9px 11px;
    background: transparent;
    font-size: 0.88rem;
    text-align: left;
  }

  .nav-copy {
    display: flex;
    align-items: baseline;
    justify-items: initial;
    gap: 8px;
  }

  .nav-en {
    font-size: 0.64rem;
  }

  .header .nav a::after {
    display: none;
    content: none;
  }

  .header.is-open .menu-toggle-line {
    opacity: 1;
    transform: none;
  }

  .header.is-open .menu-toggle-line:nth-of-type(2) {
    opacity: 1;
    transform: translateY(7px) rotate(45deg);
  }

  .header.is-open .menu-toggle-line:nth-of-type(3) {
    opacity: 0;
  }

  .header.is-open .menu-toggle-line:nth-of-type(4) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-guide > summary {
    justify-content: space-between;
  }

  .nav-guide__menu {
    position: static;
    min-width: 0;
    display: none;
    margin: 0;
    border-width: 0 0 1px;
    border-color: rgba(255, 210, 28, 0.13);
    border-radius: 0;
    padding: 2px 0 5px 18px;
    background: rgba(255, 210, 28, 0.035);
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    visibility: visible;
  }

  .nav-guide[open] > .nav-guide__menu {
    display: grid;
  }

  .nav-guide__menu a {
    min-height: 40px;
    padding: 7px 10px;
    font-size: 0.8rem;
    white-space: normal;
  }

  .nav > .nav-register {
    min-height: 48px;
    margin-top: 8px;
    justify-content: center;
    border: 1px solid var(--f60-gold, var(--gold, #ffd21c));
    border-radius: 4px;
    background: var(--f60-gold, var(--gold, #ffd21c));
    color: #11100c;
  }

  .nav > .nav-register:hover,
  .nav > .nav-register:focus-visible {
    background: #ffe05c;
    color: #11100c;
  }

  .nav > .nav-register .nav-en {
    color: inherit;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-guide__chevron,
  .nav-guide__menu {
    transition: none;
  }
}