/* Mobile-first navigation and FV simplification. */

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mobile-menu-toggle {
  display: none;
}

.mobile-menu-panel,
.mon-mobile-menu-panel {
  display: contents;
}

.site-header .global-nav a.global-nav__service-link {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-width: 164px !important;
  height: 46px !important;
  min-height: 46px !important;
  padding: 0 20px !important;
  border: 1px solid rgba(210, 173, 85, 0.88) !important;
  color: var(--black, #272421) !important;
  background: rgba(255, 253, 248, 0.62) !important;
  box-shadow: 0 12px 24px rgba(210, 173, 85, 0.12) !important;
  font-size: 14px !important;
  font-weight: 700 !important;
  letter-spacing: 0 !important;
  line-height: 1 !important;
  transition: box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease !important;
}

.site-header .global-nav a.global-nav__service-link::after {
  display: none !important;
}

.site-header .global-nav a.global-nav__service-link:hover,
.site-header .global-nav a.global-nav__service-link:focus-visible {
  color: #17130c !important;
  border-color: #d2ad55 !important;
  background: #d2ad55 !important;
  box-shadow: 0 14px 26px rgba(210, 173, 85, 0.22) !important;
  transform: none !important;
}

@media (max-width: 820px) {
  body.is-mobile-menu-open {
    overflow: hidden;
  }

  .site-header {
    top: 10px !important;
    left: 12px !important;
    right: 12px !important;
    z-index: 1000 !important;
    width: auto !important;
    min-height: 56px !important;
    padding: 8px 10px 8px 12px !important;
    gap: 10px !important;
    border: 1px solid rgba(71, 63, 54, 0.1) !important;
    border-radius: 4px !important;
    background: rgba(255, 253, 248, 0.92) !important;
    box-shadow: 0 12px 28px rgba(66, 57, 46, 0.1) !important;
    -webkit-backdrop-filter: blur(18px) !important;
    backdrop-filter: blur(18px) !important;
  }

  .site-header .brand {
    width: 104px !important;
    margin-left: 0 !important;
    flex: 0 0 auto;
  }

  .mobile-menu-toggle {
    position: relative;
    z-index: 1002;
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    margin-left: auto;
    padding: 0;
    border: 1px solid rgba(39, 36, 33, 0.22);
    border-radius: 4px;
    background: rgba(255, 253, 248, 0.76);
    color: #272421;
    cursor: pointer;
  }

  .mobile-menu-toggle__line {
    position: absolute;
    left: 11px;
    right: 11px;
    height: 1.5px;
    border-radius: 999px;
    background: currentColor;
    transition: transform 0.24s ease, opacity 0.2s ease, top 0.24s ease;
  }

  .mobile-menu-toggle__line:nth-child(1) {
    top: 13px;
  }

  .mobile-menu-toggle__line:nth-child(2) {
    top: 20px;
  }

  .mobile-menu-toggle__line:nth-child(3) {
    top: 27px;
  }

  .site-header.is-mobile-menu-open .mobile-menu-toggle__line:nth-child(1),
  .mon-fv__header.is-mobile-menu-open .mobile-menu-toggle__line:nth-child(1) {
    top: 20px;
    transform: rotate(42deg);
  }

  .site-header.is-mobile-menu-open .mobile-menu-toggle__line:nth-child(2),
  .mon-fv__header.is-mobile-menu-open .mobile-menu-toggle__line:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-mobile-menu-open .mobile-menu-toggle__line:nth-child(3),
  .mon-fv__header.is-mobile-menu-open .mobile-menu-toggle__line:nth-child(3) {
    top: 20px;
    transform: rotate(-42deg);
  }

  .site-header .mobile-menu-panel {
    position: fixed;
    top: 74px;
    left: 12px;
    right: 12px;
    z-index: 1001;
    display: grid;
    gap: 16px;
    max-height: calc(100svh - 92px);
    padding: 18px;
    overflow: auto;
    border: 1px solid rgba(71, 63, 54, 0.11);
    border-radius: 4px;
    background: rgba(255, 253, 248, 0.97);
    box-shadow: 0 24px 60px rgba(39, 36, 33, 0.18);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.24s ease, transform 0.24s ease;
  }

  .site-header.is-mobile-menu-open .mobile-menu-panel {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .site-header .global-nav {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 0;
    width: 100%;
    margin: 0 !important;
    align-items: stretch !important;
    color: #272421 !important;
    font-family: var(--serif, "Yu Mincho", "Hiragino Mincho ProN", serif);
    font-size: 14px !important;
    justify-content: stretch !important;
    text-shadow: none !important;
  }

  .site-header .global-nav a {
    display: flex;
    align-items: center;
    min-height: 46px;
    padding: 0;
    border-bottom: 1px solid rgba(71, 63, 54, 0.1);
  }

  .site-header .global-nav a::after {
    display: none;
  }

  .site-header .global-nav a.global-nav__service-link {
    justify-content: center;
    width: 100% !important;
    min-height: 48px !important;
    height: 48px !important;
    margin: 10px 0 !important;
    padding: 0 16px !important;
    border: 1px solid rgba(210, 173, 85, 0.88) !important;
    color: var(--black, #272421) !important;
    background: rgba(255, 253, 248, 0.72) !important;
    box-shadow: 0 16px 36px rgba(210, 173, 85, 0.12) !important;
    font-size: 14px !important;
    letter-spacing: 0.06em;
  }

  .site-header .header-cta {
    width: 100% !important;
    min-width: 0 !important;
    min-height: 48px !important;
    margin: 0 !important;
  }

  .top-page .diagram,
  .top-page .hero-scroll-cue,
  .lower-page .hero-system-layer,
  .lower-page .hero-visual,
  .lower-page .lower-hero-visual {
    display: none !important;
  }

  .top-page .hero {
    min-height: auto !important;
    padding-top: max(136px, calc(env(safe-area-inset-top, 0px) + 136px)) !important;
    padding-bottom: 40px !important;
  }

  .top-page .hero-inner {
    min-height: min(468px, calc(100svh - 176px)) !important;
    display: block !important;
  }

  .top-page .hero-copy {
    width: min(100%, calc(100vw - (var(--side, 22px) * 2))) !important;
    max-width: 360px !important;
    margin-top: 92px !important;
  }

  .top-page h1 {
    font-size: clamp(35px, 10vw, 45px) !important;
    line-height: 1.18 !important;
  }

  .top-page .hero .lead {
    margin-top: 16px !important;
    font-size: clamp(12px, 3.3vw, 14px) !important;
    line-height: 1.75 !important;
  }

  .top-page .actions {
    max-width: 280px !important;
    margin-top: 18px !important;
  }

  .lower-page .lower-hero {
    min-height: auto !important;
    padding-top: max(132px, calc(env(safe-area-inset-top, 0px) + 132px)) !important;
    padding-bottom: 86px !important;
  }

  .lower-page .lower-hero-inner {
    min-height: auto !important;
    grid-template-columns: 1fr !important;
  }

  .lower-page .lower-hero-copy {
    max-width: 100% !important;
  }

  .mon-fv__header {
    top: 10px !important;
    left: 12px !important;
    right: 12px !important;
    z-index: 1000 !important;
    width: auto !important;
    min-height: 58px !important;
    padding: 8px 10px 8px 12px !important;
    border: 1px solid rgba(218, 184, 91, 0.28) !important;
    border-radius: 4px !important;
    background: rgba(8, 7, 5, 0.86) !important;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28) !important;
    -webkit-backdrop-filter: blur(18px) !important;
    backdrop-filter: blur(18px) !important;
  }

  .mon-fv__header-brand {
    max-width: min(210px, calc(100vw - 96px)) !important;
    margin: 0 !important;
  }

  .mon-fv__header-brand img {
    width: 36px !important;
    height: 36px !important;
  }

  .mon-fv__header-brand strong {
    font-size: 16px !important;
    letter-spacing: 0.05em !important;
  }

  .mon-fv__header-brand small {
    display: none !important;
  }

  .mobile-menu-toggle--atsurae {
    border-color: rgba(218, 184, 91, 0.44);
    background: rgba(15, 12, 8, 0.78);
    color: #f2d980;
  }

  .mon-fv__header .mon-mobile-menu-panel {
    position: fixed;
    top: 76px;
    left: 12px;
    right: 12px;
    z-index: 1001;
    display: grid;
    gap: 16px;
    max-height: calc(100svh - 96px);
    padding: 18px;
    overflow: auto;
    border: 1px solid rgba(218, 184, 91, 0.34);
    border-radius: 4px;
    background:
      linear-gradient(180deg, rgba(245, 215, 121, 0.06), transparent 34%),
      rgba(8, 7, 5, 0.97);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.48);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.24s ease, transform 0.24s ease;
  }

  .mon-fv__header.is-mobile-menu-open .mon-mobile-menu-panel {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .mon-fv__header .mon-fv__nav {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 0 !important;
    width: 100%;
    margin: 0 !important;
  }

  .mon-fv__header .mon-fv__nav a {
    display: flex !important;
    align-items: center;
    justify-content: flex-start;
    min-height: 46px;
    padding: 0 !important;
    border: 0 !important;
    border-bottom: 1px solid rgba(218, 184, 91, 0.2) !important;
    color: rgba(247, 241, 228, 0.88) !important;
    font-size: 13px !important;
    letter-spacing: 0.12em !important;
  }

  .mon-fv__header .mon-fv__nav a::after,
  .mon-fv__header .mon-fv__home-link::after,
  .mon-fv__header .mon-fv__home-link::before {
    display: none !important;
  }

  .mon-fv__header .mon-fv__nav-contact,
  .mon-fv__header .mon-fv__home-link {
    width: 100% !important;
    min-width: 0 !important;
    min-height: 46px !important;
  }

  .mon-fv__header .mon-fv__home-link {
    display: flex !important;
    align-items: center;
    justify-content: center;
    margin: 0 !important;
    padding: 0 14px !important;
    border: 1px solid rgba(218, 184, 91, 0.34) !important;
    color: #f2d980 !important;
    background: rgba(245, 215, 121, 0.06) !important;
    font-size: 12px !important;
    letter-spacing: 0.08em !important;
  }

  .mon-fv {
    min-height: auto !important;
  }

  .mon-fv__content {
    min-height: min(690px, 100svh) !important;
    padding-top: 132px !important;
    padding-bottom: 92px !important;
  }

  .mon-fv__copy {
    width: min(100%, 344px) !important;
    max-width: calc(100vw - 44px) !important;
    padding-left: 22px !important;
    padding-right: 18px !important;
  }

  .mon-fv__copy.mon-reveal,
  .mon-fv__copy.mon-reveal.is-visible {
    filter: none !important;
    transition-duration: 0.26s !important;
  }

  .mon-fv__title {
    font-size: clamp(40px, 12vw, 50px) !important;
    line-height: 1.22 !important;
  }

  .mon-fv__lead {
    max-width: 314px !important;
  }

  .mon-fv__mark {
    display: none !important;
  }

  .mon-subpage .mon-page-hero {
    min-height: auto !important;
  }

  .mon-subpage .mon-page-hero__inner,
  .mon-subpage .mon-page-hero--menu .mon-page-hero__inner,
  .mon-subpage .mon-page-hero--contact .mon-page-hero__inner {
    min-height: auto !important;
    padding-top: 172px !important;
    padding-bottom: 96px !important;
  }
}

@media (max-width: 380px) {
  .top-page .hero-copy {
    margin-top: 76px !important;
  }

  .top-page h1 {
    font-size: clamp(33px, 9.6vw, 40px) !important;
  }

  .mon-fv__header {
    left: 10px !important;
    right: 10px !important;
    width: auto !important;
  }

  .mon-fv__content {
    padding-top: 120px !important;
  }

  .mon-fv__title {
    font-size: clamp(38px, 11.6vw, 46px) !important;
  }
}