.site-menu-toggle { display: none; }
.site-nav-ready .site-header nav[hidden] { display: none !important; }

@media (max-width: 900px) {
  /* A usable expanded navigation remains if enhancement never runs. */
  body:not(.site-nav-ready) .site-header {
    position: relative;
    min-height: 4rem;
    padding: 1rem 1.25rem;
  }
  body:not(.site-nav-ready) .site-header nav {
    display: flex;
    grid-column: 1 / -1;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1rem;
  }
  body.site-nav-ready .site-header {
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: 4rem;
    padding: 0.55rem 1.25rem;
    gap: 0 1rem;
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav-ready .site-header .availability,
  .home-page.home-experience-ready.site-nav-ready .header-hide,
  .home-page.home-experience-ready.site-nav-ready .header-reveal { display: none; }
  .site-nav-ready .site-menu-toggle:not([hidden]) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    grid-column: 2;
    grid-row: 1;
    min-width: 4.5rem;
    min-height: 2.75rem;
    border: 1px solid var(--line, #354361);
    background: rgba(3, 8, 22, 0.85);
    color: var(--ink, #f5f3ff);
    font: 0.7rem var(--mono, monospace);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
  }
  .site-menu-toggle:focus-visible {
    outline: 2px solid #b5ccff;
    outline-offset: 3px;
  }
  body.site-nav-ready .site-header nav:not([hidden]) {
    position: absolute;
    inset: calc(100% - 1px) 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    max-height: calc(100svh - 4rem);
    overflow-y: auto;
    margin: 0;
    padding: 0.6rem 1.25rem 1rem;
    gap: 0;
    border-bottom: 1px solid var(--line, #354361);
    background: #071022;
    box-shadow: 0 1rem 2rem #0005;
  }
  body.site-nav-ready .site-header nav a {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    min-height: 3rem;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid #b4ccff14;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
  }
  body.site-nav-ready .site-header nav a:focus-visible {
    outline: 2px solid #b5ccff;
    outline-offset: -2px;
  }
  body.site-nav-ready main > section { scroll-margin-top: 5rem; }
}

@media (max-width: 620px) {
  .board-hero #board-title { font-size: clamp(3rem, 12vw, 4.5rem); }
  .extras-page .extras-hero h1,
  .incident-page .incident-hero h1 { font-size: clamp(2.5rem, 10vw, 3.75rem); line-height: 1.12; }
}