/* Keep the artwork width stable while modal navigation locks page scrolling. */
html { scrollbar-gutter: stable; }

.floating-header {
  position: fixed; z-index: 60; top: 20px; left: 50%;
  display: flex; align-items: center; gap: 16px;
  width: min(1120px, calc(100% - 64px)); height: 76px;
  padding: 12px 14px 12px 30px; border: 1px solid rgba(0,7,31,.06); border-radius: 24px;
  background: rgba(255,255,255,.96); color: var(--ink); box-shadow: 0 8px 36px rgba(0,7,31,.09);
  opacity: 0; visibility: hidden; transform: translate(-50%, -14px);
  transition: opacity 240ms ease, transform 320ms cubic-bezier(.22,1,.36,1), visibility 240ms;
  backdrop-filter: blur(14px);
}
.floating-header[data-visible='true'] { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.floating-header-logo { display: flex; align-items: center; margin-right: auto; }
.floating-header-logo img { display: block; width: 145px; height: auto; }
.floating-header-contact {
  height: 42px; min-width: 112px; border: 0; padding: 0 24px; border-radius: 24px;
  background: #ff4b0014; color: #b83700; font: 600 17px/1 var(--font-en);
}
.navigation-menu-button, .navigation-close {
  position: relative; display: grid; place-items: center; flex: 0 0 50px;
  width: 50px; height: 50px; padding: 0; border: 0; border-radius: 13px;
  color: var(--ink); background: #f0f1f3;
}
.navigation-menu-lines, .navigation-close > span { position: relative; width: 21px; height: 16px; }
.navigation-menu-lines::before, .navigation-menu-lines::after, .navigation-close > span::before, .navigation-close > span::after {
  content: ''; position: absolute; left: 0; width: 21px; height: 2px; border-radius: 2px; background: currentColor;
}
.navigation-menu-lines::before { top: 4px; }
.navigation-menu-lines::after { top: 11px; }
.navigation-close > span::before { top: 7px; transform: rotate(45deg); }
.navigation-close > span::after { top: 7px; transform: rotate(-45deg); }
.floating-header-contact:hover { background: #ff4b0026; }
.navigation-menu-button { color: #fff; background: var(--ink); }
.navigation-menu-button:hover, .navigation-close:hover { background: #e5e7ec; }
.navigation-menu-button:hover { background: #1a264b; }
.floating-header :is(a,button):focus-visible, .navigation-dialog :is(a,button):focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }

html[data-navigation-open='true'] { overflow: hidden; }
.navigation-dialog {
  position: fixed; inset: var(--navigation-top, 20px) auto auto 50%; margin: 0;
  width: min(960px, calc(100% - 64px)); max-width: none;
  max-height: calc(100dvh - var(--navigation-top, 20px) - 24px);
  padding: 32px 36px 40px; border: 0; border-radius: 26px; overflow-y: auto;
  color: var(--ink); background: #fbfbfa; box-shadow: 0 22px 90px rgba(0,7,31,.2);
  transform: translateX(-50%); overscroll-behavior: contain;
}
.navigation-dialog[open] { animation: navigation-appear 220ms cubic-bezier(.22,1,.36,1) both; }
.navigation-dialog::backdrop { background: rgba(0,7,31,.22); backdrop-filter: blur(5px); }
.navigation-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.navigation-dialog-title { font: 600 40px/1.1 var(--font-en); letter-spacing: -.02em; }
.navigation-dialog-content { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; }
.navigation-site-links { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; }
.navigation-site-links > :is(a,button) { padding: 0; border: 0; background: none; color: inherit; font: 500 28px/1.2 var(--font-en); text-align: left; }
.navigation-site-links > [aria-current='page'] { color: var(--orange); }
.navigation-status { display: block; margin-top: 4px; font: 500 11px/1.3 var(--font-ja); opacity: .75; }
.site-header .navigation-status { margin-top: 3px; font-size: 10px; }
.navigation-service-heading { margin: 0 0 20px; color: #7b8090; font: 500 17px/1.4 var(--font-en); }
.navigation-service-links { display: flex; flex-direction: column; gap: 0; }
.navigation-service-links > a {
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  padding: 15px 0; color: inherit; font: 500 17px/1.55 var(--font-ja);
}
.navigation-link-arrow { flex: 0 0 auto; color: var(--orange); font: 400 21px/1 var(--font-en); transition: transform 220ms ease; }
.navigation-service-links > a:hover .navigation-link-arrow { transform: translate(3px, -3px); }
.navigation-dialog :is(a,button):hover { color: var(--orange); }
.navigation-dialog[data-mode='service'] { width: min(840px, calc(100% - 64px)); }
.navigation-dialog[data-mode='service'] .navigation-site-links { display: none; }
.navigation-dialog[data-mode='service'] .navigation-service-heading { grid-column: 1 / -1; padding-top: 0; font-size: 14px; text-decoration: underline; }
.navigation-dialog[data-mode='service'] .navigation-dialog-content { display: block; }
.navigation-dialog[data-mode='service'] .navigation-service-links { display: grid; grid-template-columns: 1fr 1fr; column-gap: 44px; }
:is(#service, .service-row, #mission, #values) { scroll-margin-top: 118px; }
@keyframes navigation-appear { from { opacity: 0; translate: 0 -10px; } to { opacity: 1; translate: 0 0; } }

@media (max-width: 767px) {
  .floating-header { top: 12px; width: calc(100% - 24px); height: 64px; padding: 8px 9px 8px 16px; gap: 9px; border-radius: 18px; }
  .floating-header-logo img { width: 112px; }
  .floating-header-contact { height: 36px; min-width: 82px; padding-inline: 14px; font-size: 15px; }
  .navigation-menu-button, .navigation-close { width: 44px; height: 44px; flex-basis: 44px; border-radius: 11px; }
  .site-header .site-logo { top: 30px; left: 20px; width: 118px; transform: none; }
  .site-header .site-logo img { width: 118px; height: auto; }
  .site-header .nav-contact { right: 78px; top: 25px; width: 84px; height: 34px; font-size: 14px; }
  /* Paint the mobile menu before JavaScript loads; its link remains usable. */
  .site-header .nav-service {
    left: auto; right: 18px; top: 19px; width: 46px; height: 46px; padding: 0; border-radius: 11px;
    color: var(--ink); background: #fff; font-size: 0 !important;
  }
  .site-header .nav-service::before,
  .site-header .nav-service::after {
    content: ''; position: absolute; left: 13px; width: 20px; height: 2px; border-radius: 2px; background: currentColor;
  }
  .site-header .nav-service::before { top: 18px; }
  .site-header .nav-service::after { top: 25px; }
  .navigation-dialog, .navigation-dialog[data-mode='service'] { width: calc(100% - 24px); padding: 19px 22px 28px; border-radius: 20px; max-height: calc(100dvh - 24px); }
  .navigation-dialog-head { margin-bottom: 24px; }
  .navigation-dialog-title { font-size: 34px; }
  .navigation-dialog-content { grid-template-columns: 1fr; gap: 32px; }
  .navigation-site-links { display: grid; grid-template-columns: 1fr 1fr; gap: 19px 24px; }
  .navigation-site-links > :is(a,button) { font-size: 25px; }
  .navigation-service-heading { margin-bottom: 9px; font-size: 16px; }
  .navigation-service-links > a { padding: 12px 0; font-size: 15px; }
  .navigation-dialog[data-mode='service'] .navigation-service-links { grid-template-columns: 1fr; }
  :is(#service, .service-row, #mission, #values) { scroll-margin-top: 95px; }
}
@media (max-width: 359px) {
  .floating-header-logo img { width: 98px; }
  .site-header .site-logo, .site-header .site-logo img { width: 100px; }
  .site-header .nav-contact { right: 72px; width: 74px; }
  .site-header .nav-service { right: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .floating-header, .navigation-link-arrow { transition: none; }
  .navigation-dialog[open] { animation: none; }
}
html[data-motion-paused='true'] :is(.floating-header, .navigation-link-arrow) { transition: none; }
html[data-motion-paused='true'] .navigation-dialog[open] { animation: none; }

/* Keep the full-width plus from enlarging Service's desktop line box. */
@media (min-width: 768px) {
  .site-header .nav-service { line-height: 1.2; }
}