/* Small, local feedback: no layout animation or extra per-frame work. */
:where(a[href], button:not(:disabled)) { -webkit-tap-highlight-color: transparent; }
:where(a[href], button:not(:disabled)):focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 4px;
}
.global-header .nav { gap: 0; padding-inline: 4px; }
.global-header .nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  padding-inline: 9px;
  gap: 8px;
  transition: background-color .22s ease, color .22s ease;
}
.global-header .nav a:focus-visible { outline-offset: -3px; }
.nav__external span { display: inline-block; transition: transform .25s ease; }
.global-header .brand { transition: opacity .25s ease; }
.contact-index__ruler a > span { transition: transform .3s ease; }
.contact-index__external { transition: opacity .25s ease; }
.material-archive__thumb { overflow: hidden; }
.material-archive__thumb img { transition: transform .4s cubic-bezier(.22,1,.36,1); }
.material-timeline__year { transition: color .2s ease; }
.global-advance { transition: background-color .25s ease; }
.global-advance img { transition: transform .3s ease; }
.colony__specimen-button { transition: background-color .25s ease; }
#research-weaving { scroll-margin-top: 80px; }
#laboratory:focus, #research-weaving:focus, #material-archive:focus,
#people:focus, #robot-story:focus, #contact:focus, #home:focus { outline: none; }

@media (hover: hover) and (pointer: fine) {
  .global-header .nav a:hover { background: #000; color: #fff; }
  .global-header .brand:hover { opacity: .65; }
  .nav__external:hover span { transform: translate(2px,-2px); }
  .contact-index__ruler a:hover > span { transform: translateX(3px); }
  .contact-index__external:hover { opacity: .65; }
  .material-archive__thumb:hover img { transform: scale(1.06); }
  .material-timeline__year:hover { color: #000; }
  .material-timeline__year:hover::before { background: #000; }
  .colony__specimen-button:hover { background: #00000008; }
  .global-advance:hover { background: #ffffff36; }
  .global-advance:hover img { transform: translateY(4px) rotate(90deg); }
}
.global-header .nav a:focus-visible { background: #000; color: #fff; }
.material-archive__thumb:focus-visible img { transform: scale(1.06); }
.nav__external:focus-visible span { transform: translate(2px,-2px); }
.global-advance:active img { transform: translateY(6px) rotate(90deg); }

@media (max-width: 1100px) {
  .global-header .nav a { padding-inline: 6px; gap: 4px; }
}
@media (max-width: 700px) {
  .global-header .nav { gap: 0; padding-inline: 2px; }
  .global-header .nav a { padding-inline: 6px; min-height: 32px; }
  #research-weaving { scroll-margin-top: 115px; }
}
@media (prefers-reduced-motion: reduce) {
  .global-header .nav a, .nav__external span, .global-header .brand,
  .contact-index__ruler a > span, .contact-index__external,
  .material-archive__thumb img, .material-timeline__year,
  .global-advance, .global-advance img, .colony__specimen-button { transition: none; }
}

.archive-title {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.nav-toggle { display: none; }

@media (max-width: 1100px), (max-width: 1366px) and (pointer: coarse) {
  .global-header[data-menu-ready] {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0;
  }
  .global-header[data-menu-ready] .brand {
    justify-content: flex-start;
    align-items: center;
    font-size: clamp(17px, 5vw, 24px);
    gap: clamp(8px, 3vw, 20px);
    min-height: 44px;
  }
  .global-header[data-menu-ready] .brand__name { letter-spacing: 3px; }
  .global-header[data-menu-ready] .nav-toggle {
    display: grid;
    place-items: center;
    min-width: 56px;
    min-height: 44px;
    padding: 0 8px;
    border: 0;
    border-radius: 2px;
    background: #fff;
    color: #000;
    font: 11px/1 var(--mono);
    cursor: pointer;
    pointer-events: auto;
  }
  .global-header[data-menu-ready] .nav {
    display: none;
    position: absolute;
    inset: calc(100% + 6px) 0 auto auto;
    width: min(240px, 100%);
    max-height: calc(100dvh - 80px);
    height: auto;
    margin: 0;
    padding: 4px 8px;
    flex-direction: column;
    align-items: stretch;
    overflow-y: auto;
    overscroll-behavior: contain;
    font-size: 12px;
  }
  .global-header[data-menu-open] .nav { display: flex; }
  .global-header[data-menu-open] .nav a {
    justify-content: space-between;
    min-height: 44px;
  }
  .global-header[data-menu-ready] .nav__rule {
    display: block;
    width: 100%;
    height: 1px;
    flex: none;
  }
  html.is-preloading:not(.is-revealing) .global-header .nav-toggle {
    background: #000;
    color: #fff;
  }
}