/* Shared first-screen header treatment for the four inner pages. */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: transparent;
  border: 0;
  box-shadow: none;
  transition: background-color .36s cubic-bezier(.2,.7,.2,1), box-shadow .36s cubic-bezier(.2,.7,.2,1);
}

.site-header.is-scrolled,
.site-header:has(.mobile-menu[open]) {
  background: var(--paper);
  box-shadow: 0 5px 22px #201a1318;
}

.site-header .header-inner {
  position: relative;
  width: 80%;
  max-width: none;
  min-height: 126px;
  transition: min-height .36s cubic-bezier(.2,.7,.2,1);
}

.site-header .header-inner::after {
  content: "";
  position: absolute;
  left: -5vw;
  right: -5vw;
  bottom: 0;
  height: 1px;
  background: #ffffff75;
  transition: background-color .36s ease;
}

.site-header.is-scrolled .header-inner,
.site-header:has(.mobile-menu[open]) .header-inner {
  min-height: 86px;
}

.site-header.is-scrolled .header-inner::after,
.site-header:has(.mobile-menu[open]) .header-inner::after {
  background: var(--line);
}

.site-header .brand img { width: 91px; height: 68px; }

.hero {
  min-height: 100vh;
  min-height: 100svh;
}

@media (max-width: 1100px) {
  .site-header .header-inner { width: 88%; }
  .site-header .header-inner::after { left: -3vw; right: -3vw; }
  .site-header .brand img { width: 75px; height: 57px; }
}

@media (max-width: 760px) {
  .site-header .header-inner {
    width: auto;
    min-height: 75px;
    margin: 0 21px;
  }
  .site-header.is-scrolled .header-inner,
  .site-header:has(.mobile-menu[open]) .header-inner { min-height: 68px; }
  .site-header .header-inner::after { left: -10px; right: -10px; }
  .site-header .brand img { width: 58px; height: 44px; }
  .hero { min-height: 100svh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-header,
  .site-header .header-inner,
  .site-header .header-inner::after { transition: none; }
}