.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 40px;
  background: var(--c-bg, rgba(255, 255, 255, 0.94));
  backdrop-filter: blur(10px);
  border-bottom: 0.5px solid var(--c-border, rgba(0, 0, 0, 0.09));
  overflow: visible;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 0.75rem;
  color: var(--c-text, #1a1a1a);
  text-decoration: none;
}

.nav-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 14px;
}

.nav-logo-mark img {
  display: block;
  width: 26px;
  height: auto;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  line-height: 1.1;
  white-space: nowrap;
}

.nav-logo-jp {
  font-weight: 600;
}

.nav-logo-en {
  color: var(--c-muted, #6b6b6b);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-item {
  position: relative;
}

.nav-item::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 22px;
}

.nav-link-main,
.nav-links > a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--c-muted, #6b6b6b);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.nav-links > a:hover,
.nav-links > a[aria-current="page"],
.nav-link-main[aria-current="page"],
.nav-item:hover .nav-link-main,
.nav-item:focus-within .nav-link-main {
  color: var(--c-text, #1a1a1a);
  background: rgba(26, 95, 168, 0.06);
  border-color: rgba(26, 95, 168, 0.10);
  box-shadow: 0 8px 18px rgba(26, 95, 168, 0.08);
}

.nav-submenu {
  position: absolute;
  z-index: 1000;
  box-sizing: border-box;
  border: 1px solid rgba(26, 95, 168, 0.10);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 36px rgba(11, 28, 46, 0.10), 0 4px 10px rgba(11, 28, 46, 0.04);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  min-width: 42px;
  min-height: 42px;
  padding: 0;
  border: 1px solid rgba(12,31,51,0.16);
  border-radius: 999px;
  background: rgba(255,255,255,0.98);
  color: #0c1f33;
  font: inherit;
  font-size: 0;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(12,31,51,0.12);
}

.nav-toggle-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.nav-toggle-lines {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle-lines span {
  width: 18px;
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
  transform-origin: center;
}

.nav.is-open .nav-toggle-lines span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav.is-open .nav-toggle-lines span:nth-child(2) {
  opacity: 0;
}

.nav.is-open .nav-toggle-lines span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

.nav-overview-link {
  display: none !important;
}

.nav-link-main {
  gap: 0 !important;
}

.nav-link-main::after {
  content: none !important;
  display: none !important;
}

.nav-submenu a {
  justify-content: flex-start !important;
  gap: 0 !important;
}

.nav-submenu a::after {
  content: none !important;
  display: none !important;
}

.footer-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.8fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
  margin-bottom: 30px;
}

.footer-company {
  display: grid;
  align-content: start;
  gap: 20px;
  min-width: 0;
  max-width: 360px;
}

.footer-contact-list {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.footer-contact-list .footer-text {
  margin: 0;
}

.footer-address {
  display: grid;
  gap: 2px;
}

.footer-address span {
  display: block;
}

.footer-link {
  border-bottom: 0;
  color: inherit;
  font-weight: 500;
  text-decoration: none;
}

.footer-link:hover {
  border-bottom: 0;
  color: var(--c-text, #1a1a1a);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 42px);
  min-width: 0;
  padding-top: 4px;
}

.footer-nav-group {
  display: grid;
  align-content: start;
  gap: 12px;
  min-width: 0;
}

.footer-nav-title {
  margin: 0;
  color: var(--c-text, #1a1a1a);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.4;
}

.footer-nav-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-nav-link {
  display: flex;
  align-items: flex-start;
  min-width: 0;
  border-bottom: 0;
  color: var(--c-muted, #6b6b6b);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.55;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.footer-nav-link:hover {
  border-bottom: 0;
  color: var(--c-text, #1a1a1a);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 1100px) {
  .footer-nav {
    grid-template-columns:
      minmax(150px, 1.08fr)
      minmax(160px, 1fr)
      minmax(170px, 1.08fr)
      max-content;
  }

  .footer-nav-group:last-child .footer-nav-link {
    overflow-wrap: normal;
    white-space: nowrap;
  }
}

@media (max-width: 860px) {
  .footer-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-company {
    max-width: none;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
  }
}

@media (max-width: 520px) {
  .footer-nav {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

@media (max-width: 960px) {
  .nav {
    flex-wrap: wrap;
    row-gap: 12px;
    min-height: 68px;
    padding: 12px 20px !important;
  }

  .nav-toggle {
    display: inline-flex !important;
    position: fixed;
    top: 0.65rem;
    right: 1rem;
    z-index: 120;
    margin-left: 0;
  }

  .nav-links {
    display: none !important;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    z-index: 110;
    width: auto;
    max-height: calc(100dvh - 84px);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: 1.5rem;
    border: none;
    border-radius: 0 0 24px 24px;
    background: #fff;
    box-shadow: 0 20px 40px rgba(15,138,215,0.15);
  }

  .nav.is-open .nav-links {
    display: flex !important;
  }

  .nav-item {
    display: grid;
    gap: 0.85rem;
    width: 100%;
  }

  .nav-item::after {
    display: none;
  }

  .nav-link-main,
  .nav-links > a {
    width: 100%;
    height: 40px;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    box-shadow: none;
    color: var(--c-text, #1a1a1a);
  }

  .nav-link-main {
    gap: 8px !important;
    justify-content: space-between;
  }

  .nav-links > a {
    justify-content: flex-start;
  }

  .nav-link-main::after {
    content: '' !important;
    display: block !important;
    flex-shrink: 0;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid var(--c-hint, #a0a0a0);
    border-bottom: 1.5px solid var(--c-hint, #a0a0a0);
    transform: translateY(-2px) rotate(45deg);
  }

  .nav-item.is-open .nav-link-main::after {
    transform: translateY(1px) rotate(225deg);
  }

  .nav-links > a:hover,
  .nav-links > a[aria-current="page"],
  .nav-item.is-open .nav-link-main,
  .nav-item:hover .nav-link-main,
  .nav-item:focus-within .nav-link-main {
    background: rgba(26,95,168,0.06);
    border-color: rgba(26,95,168,0.14);
    box-shadow: none;
  }

  .nav-submenu {
    display: none;
    position: static !important;
    top: auto;
    left: auto;
    min-width: 0;
    padding: 0 0 0 0.75rem;
    border: none;
    border-radius: 0;
    background: transparent;
    backdrop-filter: none;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .nav-item.is-open .nav-submenu {
    display: grid;
    gap: 0.55rem;
  }

  .nav-submenu::before {
    display: none;
  }

  .nav-submenu a {
    display: inline-flex !important;
    padding: 0;
    margin-top: 0;
    border: none;
    border-radius: 0;
    background: transparent;
    color: var(--c-muted, #666);
    font-size: 0.95rem;
    font-weight: 500;
  }
}

@media (min-width: 961px) {
  .nav,
  .app-header,
  .header-inner {
    overflow: visible !important;
  }

  .nav-links,
  .desktop-nav {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
  }

  .nav-links .nav-item,
  .desktop-nav .nav-item {
    position: relative !important;
    flex: 0 0 auto !important;
    width: auto !important;
    overflow: visible !important;
    --desktop-submenu-width: 248px;
    --desktop-submenu-row: 38px;
    --desktop-submenu-x: 0px;
  }

  .nav-links .nav-item:nth-child(1),
  .desktop-nav .nav-item:nth-child(1) {
    width: 76px !important;
  }

  .nav-links .nav-item:nth-child(2),
  .desktop-nav .nav-item:nth-child(2) {
    width: 104px !important;
  }

  .nav-links .nav-item:nth-child(3),
  .desktop-nav .nav-item:nth-child(3) {
    width: 118px !important;
  }

  .nav-links .nav-item:nth-child(4),
  .desktop-nav .nav-item:nth-child(4) {
    width: 76px !important;
    --desktop-submenu-x: calc(76px - var(--desktop-submenu-width));
  }

  .nav-link-main,
  .desktop-nav .nav-link-main {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    min-width: 0 !important;
    height: 40px !important;
    min-height: 40px !important;
    padding: 0 10px !important;
    border: 1px solid transparent !important;
    border-radius: 999px !important;
    gap: 0 !important;
    white-space: nowrap !important;
    transform: none !important;
  }

  .nav-link-main::after,
  .nav-submenu::before,
  .nav-submenu a::after {
    content: none !important;
    display: none !important;
  }

  .nav-links .nav-item::after,
  .desktop-nav .nav-item::after {
    content: '' !important;
    position: absolute !important;
    top: 100% !important;
    left: var(--desktop-submenu-x) !important;
    right: auto !important;
    width: var(--desktop-submenu-width) !important;
    height: 12px !important;
    display: block !important;
    pointer-events: auto !important;
  }

  .nav-item .nav-submenu,
  .desktop-nav .nav-submenu {
    position: absolute !important;
    top: calc(100% + 8px) !important;
    left: var(--desktop-submenu-x) !important;
    right: auto !important;
    z-index: 1000 !important;
    box-sizing: border-box !important;
    display: grid !important;
    grid-template-columns: 226px !important;
    grid-auto-rows: var(--desktop-submenu-row) !important;
    align-items: stretch !important;
    justify-items: stretch !important;
    width: var(--desktop-submenu-width) !important;
    min-width: var(--desktop-submenu-width) !important;
    max-width: var(--desktop-submenu-width) !important;
    padding: 10px !important;
    border: 1px solid rgba(26, 95, 168, 0.10) !important;
    border-radius: 14px !important;
    background: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 18px 36px rgba(11, 28, 46, 0.10), 0 4px 10px rgba(11, 28, 46, 0.04) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: none !important;
    transition: opacity 0.12s ease, visibility 0s linear 0.12s !important;
  }

  .nav-item:hover .nav-submenu,
  .nav-item:focus-within .nav-submenu,
  .desktop-nav .nav-item:hover .nav-submenu,
  .desktop-nav .nav-item:focus-within .nav-submenu {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: none !important;
    transition-delay: 0s !important;
  }

  .nav-submenu a,
  .desktop-nav .nav-submenu-link {
    box-sizing: border-box !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    width: 226px !important;
    min-width: 226px !important;
    max-width: 226px !important;
    height: var(--desktop-submenu-row) !important;
    min-height: var(--desktop-submenu-row) !important;
    max-height: var(--desktop-submenu-row) !important;
    margin: 0 !important;
    padding: 0 12px !important;
    border: 1px solid transparent !important;
    border-radius: 10px !important;
    background: transparent !important;
    color: var(--c-text, var(--color-dark, #1a1a1a)) !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    line-height: 1.3 !important;
    text-align: left !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    transform: none !important;
    transition: background-color 0.12s ease, color 0.12s ease !important;
  }

  .nav-submenu a:hover,
  .desktop-nav .nav-submenu-link:hover {
    background: rgba(26, 95, 168, 0.06) !important;
    color: var(--c-text, var(--color-dark, #1a1a1a)) !important;
  }

  .nav-submenu a.nav-overview-link {
    display: none !important;
  }
}